diff options
Diffstat (limited to 'xlators/cluster')
68 files changed, 50964 insertions, 26153 deletions
diff --git a/xlators/cluster/Makefile.am b/xlators/cluster/Makefile.am index a6ddb3564..0990822a7 100644 --- a/xlators/cluster/Makefile.am +++ b/xlators/cluster/Makefile.am @@ -1,3 +1,3 @@ -SUBDIRS = unify stripe afr dht ha map +SUBDIRS = stripe afr dht CLEANFILES = diff --git a/xlators/cluster/afr/src/Makefile.am b/xlators/cluster/afr/src/Makefile.am index 1bde9e5ba..35d18a6c0 100644 --- a/xlators/cluster/afr/src/Makefile.am +++ b/xlators/cluster/afr/src/Makefile.am @@ -1,20 +1,37 @@ -xlator_LTLIBRARIES = afr.la +xlator_LTLIBRARIES = afr.la pump.la xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/cluster -afr_la_LDFLAGS = -module -avoidversion +afr_common_source = afr-dir-read.c afr-dir-write.c afr-inode-read.c \ + afr-inode-write.c afr-open.c afr-transaction.c afr-self-heal-data.c \ + afr-self-heal-common.c afr-self-heal-metadata.c afr-self-heal-entry.c \ + afr-self-heal-algorithm.c afr-lk-common.c afr-self-heald.c \ + $(top_builddir)/xlators/lib/src/libxlator.c -afr_la_SOURCES = afr.c afr-dir-read.c afr-dir-write.c afr-inode-read.c afr-inode-write.c afr-transaction.c afr-self-heal-data.c afr-self-heal-common.c afr-self-heal-metadata.c afr-self-heal-entry.c +afr_la_LDFLAGS = -module -avoid-version +afr_la_SOURCES = $(afr_common_source) afr.c afr_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la -noinst_HEADERS = afr.h afr-transaction.h afr-inode-write.h afr-inode-read.h afr-dir-read.h afr-dir-write.h afr-self-heal.h afr-self-heal-common.h +pump_la_LDFLAGS = -module -avoid-version +pump_la_SOURCES = $(afr_common_source) pump.c +pump_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la -AM_CFLAGS = -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -Wall -D$(GF_HOST_OS) \ - -I$(top_srcdir)/libglusterfs/src -shared -nostartfiles $(GF_CFLAGS) +noinst_HEADERS = afr.h afr-transaction.h afr-inode-write.h afr-inode-read.h \ + afr-dir-read.h afr-dir-write.h afr-self-heal.h afr-self-heal-common.h \ + afr-self-heal-algorithm.h pump.h afr-mem-types.h afr-common.c \ + afr-self-heald.h $(top_builddir)/xlators/lib/src/libxlator.h \ + $(top_builddir)/glusterfsd/src/glusterfsd.h -CLEANFILES = +AM_CPPFLAGS = $(GF_CPPFLAGS) \ + -I$(top_srcdir)/libglusterfs/src -I$(top_srcdir)/xlators/lib/src \ + -I$(top_srcdir)/rpc/rpc-lib/src + +AM_CFLAGS = -Wall $(GF_CFLAGS) + +CLEANFILES = uninstall-local: rm -f $(DESTDIR)$(xlatordir)/replicate.so + rm -f $(DESTDIR)$(xlatordir)/pump.so install-data-hook: - ln -sf afr.so $(DESTDIR)$(xlatordir)/replicate.so
\ No newline at end of file + ln -sf afr.so $(DESTDIR)$(xlatordir)/replicate.so diff --git a/xlators/cluster/afr/src/afr-common.c b/xlators/cluster/afr/src/afr-common.c new file mode 100644 index 000000000..af01f2ef2 --- /dev/null +++ b/xlators/cluster/afr/src/afr-common.c @@ -0,0 +1,4591 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#include <libgen.h> +#include <unistd.h> +#include <fnmatch.h> +#include <sys/time.h> +#include <stdlib.h> +#include <signal.h> + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "glusterfs.h" +#include "afr.h" +#include "dict.h" +#include "xlator.h" +#include "hashfn.h" +#include "logging.h" +#include "stack.h" +#include "list.h" +#include "call-stub.h" +#include "defaults.h" +#include "common-utils.h" +#include "compat-errno.h" +#include "compat.h" +#include "byte-order.h" +#include "statedump.h" +#include "inode.h" + +#include "fd.h" + +#include "afr-inode-read.h" +#include "afr-inode-write.h" +#include "afr-dir-read.h" +#include "afr-dir-write.h" +#include "afr-transaction.h" +#include "afr-self-heal.h" +#include "afr-self-heal-common.h" +#include "afr-self-heald.h" +#include "pump.h" + +#define AFR_ICTX_OPENDIR_DONE_MASK 0x0000000100000000ULL +#define AFR_ICTX_READ_CHILD_MASK 0x00000000FFFFFFFFULL +#define AFR_STATISTICS_HISTORY_SIZE 50 +int +afr_lookup_done_success_action (call_frame_t *frame, xlator_t *this, + gf_boolean_t fail_conflict); +void +afr_children_copy (int32_t *dst, int32_t *src, unsigned int child_count) +{ + int i = 0; + + for (i = 0; i < child_count; i++) + dst[i] = src[i]; +} + +void +afr_xattr_req_prepare (xlator_t *this, dict_t *xattr_req, const char *path) +{ + int i = 0; + afr_private_t *priv = NULL; + int ret = 0; + + priv = this->private; + + for (i = 0; i < priv->child_count; i++) { + ret = dict_set_uint64 (xattr_req, priv->pending_key[i], + 3 * sizeof(int32_t)); + if (ret < 0) + gf_log (this->name, GF_LOG_WARNING, + "%s: Unable to set dict value for %s", + path, priv->pending_key[i]); + /* 3 = data+metadata+entry */ + } + ret = dict_set_int32 (xattr_req, GF_GFIDLESS_LOOKUP, 1); + if (ret) { + gf_log (this->name, GF_LOG_DEBUG, "%s: failed to set gfidless " + "lookup", path); + } +} + +int +afr_lookup_xattr_req_prepare (afr_local_t *local, xlator_t *this, + dict_t *xattr_req, loc_t *loc, void **gfid_req) +{ + int ret = -ENOMEM; + + GF_ASSERT (gfid_req); + + *gfid_req = NULL; + local->xattr_req = dict_new (); + if (!local->xattr_req) + goto out; + if (xattr_req) + dict_copy (xattr_req, local->xattr_req); + + afr_xattr_req_prepare (this, local->xattr_req, loc->path); + ret = dict_set_uint64 (local->xattr_req, GLUSTERFS_INODELK_COUNT, 0); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "%s: Unable to set dict value for %s", + loc->path, GLUSTERFS_INODELK_COUNT); + } + ret = dict_set_uint64 (local->xattr_req, GLUSTERFS_ENTRYLK_COUNT, 0); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "%s: Unable to set dict value for %s", + loc->path, GLUSTERFS_ENTRYLK_COUNT); + } + + ret = dict_set_uint32 (local->xattr_req, GLUSTERFS_PARENT_ENTRYLK, 0); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "%s: Unable to set dict value for %s", + loc->path, GLUSTERFS_PARENT_ENTRYLK); + } + + ret = dict_get_ptr (local->xattr_req, "gfid-req", gfid_req); + if (ret) { + gf_log (this->name, GF_LOG_DEBUG, + "%s: failed to get the gfid from dict", loc->path); + *gfid_req = NULL; + } else { + if (loc->parent != NULL) + dict_del (local->xattr_req, "gfid-req"); + } + ret = 0; +out: + return ret; +} + +void +afr_lookup_save_gfid (uuid_t dst, void* new, const loc_t *loc) +{ + inode_t *inode = NULL; + + inode = loc->inode; + if (inode && !uuid_is_null (inode->gfid)) + uuid_copy (dst, inode->gfid); + else if (!uuid_is_null (loc->gfid)) + uuid_copy (dst, loc->gfid); + else if (new && !uuid_is_null (new)) + uuid_copy (dst, new); +} + +int +afr_errno_count (int32_t *children, int *child_errno, + unsigned int child_count, int32_t op_errno) +{ + int i = 0; + int errno_count = 0; + int child = 0; + + for (i = 0; i < child_count; i++) { + if (children) { + child = children[i]; + if (child == -1) + break; + } else { + child = i; + } + if (child_errno[child] == op_errno) + errno_count++; + } + return errno_count; +} + +int32_t +afr_set_dict_gfid (dict_t *dict, uuid_t gfid) +{ + int ret = 0; + uuid_t *pgfid = NULL; + + GF_ASSERT (gfid); + + pgfid = GF_CALLOC (1, sizeof (uuid_t), gf_common_mt_char); + if (!pgfid) { + ret = -1; + goto out; + } + + uuid_copy (*pgfid, gfid); + + ret = dict_set_dynptr (dict, "gfid-req", pgfid, sizeof (uuid_t)); + if (ret) + gf_log (THIS->name, GF_LOG_ERROR, "gfid set failed"); + +out: + if (ret && pgfid) + GF_FREE (pgfid); + + return ret; +} + +void +afr_inode_ctx_destroy (afr_inode_ctx_t *ctx) +{ + if (!ctx) + return; + GF_FREE (ctx->fresh_children); + GF_FREE (ctx); +} + +afr_inode_ctx_t* +__afr_inode_ctx_get (inode_t *inode, xlator_t *this) +{ + int ret = 0; + uint64_t ctx_addr = 0; + afr_inode_ctx_t *ctx = NULL; + afr_private_t *priv = NULL; + + priv = this->private; + ret = __inode_ctx_get (inode, this, &ctx_addr); + if (ret < 0) + ctx_addr = 0; + if (ctx_addr != 0) { + ctx = (afr_inode_ctx_t*) (long) ctx_addr; + goto out; + } + ctx = GF_CALLOC (1, sizeof (*ctx), + gf_afr_mt_inode_ctx_t); + if (!ctx) + goto fail; + ctx->fresh_children = GF_CALLOC (priv->child_count, + sizeof (*ctx->fresh_children), + gf_afr_mt_int32_t); + if (!ctx->fresh_children) + goto fail; + ret = __inode_ctx_put (inode, this, (uint64_t)ctx); + if (ret) { + gf_log_callingfn (this->name, GF_LOG_ERROR, "failed to " + "set the inode ctx (%s)", + uuid_utoa (inode->gfid)); + goto fail; + } + +out: + return ctx; + +fail: + afr_inode_ctx_destroy (ctx); + return NULL; +} + +afr_inode_ctx_t* +afr_inode_ctx_get (inode_t *inode, xlator_t *this) +{ + afr_inode_ctx_t *ctx = NULL; + + LOCK (&inode->lock); + { + ctx = __afr_inode_ctx_get (inode, this); + } + UNLOCK (&inode->lock); + return ctx; +} + +void +afr_inode_get_ctx_params (xlator_t *this, inode_t *inode, + afr_inode_params_t *params) +{ + GF_ASSERT (inode); + GF_ASSERT (params); + + afr_inode_ctx_t *ctx = NULL; + afr_private_t *priv = NULL; + int i = 0; + int32_t read_child = -1; + int32_t *fresh_children = NULL; + + priv = this->private; + LOCK (&inode->lock); + { + ctx = __afr_inode_ctx_get (inode, this); + if (!ctx) + goto unlock; + switch (params->op) { + case AFR_INODE_GET_READ_CTX: + fresh_children = params->u.read_ctx.children; + read_child = (int32_t)(ctx->masks & + AFR_ICTX_READ_CHILD_MASK); + params->u.read_ctx.read_child = read_child; + if (!fresh_children) + goto unlock; + for (i = 0; i < priv->child_count; i++) + fresh_children[i] = ctx->fresh_children[i]; + break; + case AFR_INODE_GET_OPENDIR_DONE: + params->u.value = _gf_false; + if (ctx->masks & AFR_ICTX_OPENDIR_DONE_MASK) + params->u.value = _gf_true; + break; + default: + GF_ASSERT (0); + break; + } + } +unlock: + UNLOCK (&inode->lock); +} + +gf_boolean_t +afr_is_split_brain (xlator_t *this, inode_t *inode) +{ + afr_inode_ctx_t *ctx = NULL; + gf_boolean_t spb = _gf_false; + + ctx = afr_inode_ctx_get (inode, this); + if (!ctx) + goto out; + if ((ctx->mdata_spb == SPB) || (ctx->data_spb == SPB)) + spb = _gf_true; +out: + return spb; +} + +gf_boolean_t +afr_is_opendir_done (xlator_t *this, inode_t *inode) +{ + afr_inode_params_t params = {0}; + + params.op = AFR_INODE_GET_OPENDIR_DONE; + afr_inode_get_ctx_params (this, inode, ¶ms); + return params.u.value; +} + +int32_t +afr_inode_get_read_ctx (xlator_t *this, inode_t *inode, int32_t *fresh_children) +{ + afr_inode_params_t params = {0}; + + params.op = AFR_INODE_GET_READ_CTX; + params.u.read_ctx.children = fresh_children; + afr_inode_get_ctx_params (this, inode, ¶ms); + return params.u.read_ctx.read_child; +} + +void +afr_inode_ctx_set_read_child (afr_inode_ctx_t *ctx, int32_t read_child) +{ + uint64_t remaining_mask = 0; + uint64_t mask = 0; + + remaining_mask = (~AFR_ICTX_READ_CHILD_MASK & ctx->masks); + mask = (AFR_ICTX_READ_CHILD_MASK & read_child); + ctx->masks = remaining_mask | mask; +} + +void +afr_inode_ctx_set_read_ctx (afr_inode_ctx_t *ctx, int32_t read_child, + int32_t *fresh_children, int32_t child_count) +{ + int i = 0; + + afr_inode_ctx_set_read_child (ctx, read_child); + for (i = 0; i < child_count; i++) { + if (fresh_children) + ctx->fresh_children[i] = fresh_children[i]; + else + ctx->fresh_children[i] = -1; + } +} + +void +afr_inode_ctx_rm_stale_children (afr_inode_ctx_t *ctx, int32_t *stale_children, + int32_t child_count) +{ + int i = 0; + int32_t read_child = -1; + + GF_ASSERT (stale_children); + for (i = 0; i < child_count; i++) { + if (stale_children[i] == -1) + break; + afr_children_rm_child (ctx->fresh_children, + stale_children[i], child_count); + } + read_child = (int32_t)(ctx->masks & AFR_ICTX_READ_CHILD_MASK); + if (!afr_is_child_present (ctx->fresh_children, child_count, + read_child)) + afr_inode_ctx_set_read_child (ctx, ctx->fresh_children[0]); +} + +void +afr_inode_ctx_set_opendir_done (afr_inode_ctx_t *ctx) +{ + uint64_t remaining_mask = 0; + uint64_t mask = 0; + + remaining_mask = (~AFR_ICTX_OPENDIR_DONE_MASK & ctx->masks); + mask = (0xFFFFFFFFFFFFFFFFULL & AFR_ICTX_OPENDIR_DONE_MASK); + ctx->masks = remaining_mask | mask; +} + +void +afr_inode_set_ctx_params (xlator_t *this, inode_t *inode, + afr_inode_params_t *params) +{ + GF_ASSERT (inode); + GF_ASSERT (params); + + afr_inode_ctx_t *ctx = NULL; + afr_private_t *priv = NULL; + int32_t read_child = -1; + int32_t *fresh_children = NULL; + int32_t *stale_children = NULL; + + priv = this->private; + LOCK (&inode->lock); + { + ctx = __afr_inode_ctx_get (inode, this); + if (!ctx) + goto unlock; + switch (params->op) { + case AFR_INODE_SET_READ_CTX: + read_child = params->u.read_ctx.read_child; + fresh_children = params->u.read_ctx.children; + afr_inode_ctx_set_read_ctx (ctx, read_child, + fresh_children, + priv->child_count); + break; + case AFR_INODE_RM_STALE_CHILDREN: + stale_children = params->u.read_ctx.children; + afr_inode_ctx_rm_stale_children (ctx, + stale_children, + priv->child_count); + break; + case AFR_INODE_SET_OPENDIR_DONE: + afr_inode_ctx_set_opendir_done (ctx); + break; + default: + GF_ASSERT (0); + break; + } + } +unlock: + UNLOCK (&inode->lock); +} + +void +afr_set_split_brain (xlator_t *this, inode_t *inode, afr_spb_state_t mdata_spb, + afr_spb_state_t data_spb) +{ + afr_inode_ctx_t *ctx = NULL; + + ctx = afr_inode_ctx_get (inode, this); + if (mdata_spb != DONT_KNOW) + ctx->mdata_spb = mdata_spb; + if (data_spb != DONT_KNOW) + ctx->data_spb = data_spb; +} + +void +afr_set_opendir_done (xlator_t *this, inode_t *inode) +{ + afr_inode_params_t params = {0}; + + params.op = AFR_INODE_SET_OPENDIR_DONE; + afr_inode_set_ctx_params (this, inode, ¶ms); +} + +void +afr_inode_set_read_ctx (xlator_t *this, inode_t *inode, int32_t read_child, + int32_t *fresh_children) +{ + afr_inode_params_t params = {0}; + afr_private_t *priv = NULL; + + priv = this->private; + GF_ASSERT (read_child >= 0); + GF_ASSERT (fresh_children); + GF_ASSERT (afr_is_child_present (fresh_children, priv->child_count, + read_child)); + + params.op = AFR_INODE_SET_READ_CTX; + params.u.read_ctx.read_child = read_child; + params.u.read_ctx.children = fresh_children; + afr_inode_set_ctx_params (this, inode, ¶ms); +} + +void +afr_inode_rm_stale_children (xlator_t *this, inode_t *inode, + int32_t *stale_children) +{ + afr_inode_params_t params = {0}; + + GF_ASSERT (stale_children); + + params.op = AFR_INODE_RM_STALE_CHILDREN; + params.u.read_ctx.children = stale_children; + afr_inode_set_ctx_params (this, inode, ¶ms); +} + +gf_boolean_t +afr_is_source_child (int32_t *sources, int32_t child_count, int32_t child) +{ + gf_boolean_t source_xattrs = _gf_false; + + GF_ASSERT (child < child_count); + + if ((child >= 0) && (child < child_count) && + sources[child]) { + source_xattrs = _gf_true; + } + return source_xattrs; +} + +gf_boolean_t +afr_is_child_present (int32_t *success_children, int32_t child_count, + int32_t child) +{ + gf_boolean_t success_child = _gf_false; + int i = 0; + + GF_ASSERT (child < child_count); + + for (i = 0; i < child_count; i++) { + if (success_children[i] == -1) + break; + if (child == success_children[i]) { + success_child = _gf_true; + break; + } + } + return success_child; +} + +gf_boolean_t +afr_is_read_child (int32_t *success_children, int32_t *sources, + int32_t child_count, int32_t child) +{ + gf_boolean_t success_child = _gf_false; + gf_boolean_t source = _gf_false; + + if (child < 0) { + return _gf_false; + } + + GF_ASSERT (success_children); + GF_ASSERT (child_count > 0); + + success_child = afr_is_child_present (success_children, child_count, + child); + if (!success_child) + goto out; + if (NULL == sources) { + source = _gf_true; + goto out; + } + source = afr_is_source_child (sources, child_count, child); +out: + return (success_child && source); +} + +int32_t +afr_hash_child (int32_t *success_children, int32_t child_count, + unsigned int hmode, uuid_t gfid) +{ + uuid_t gfid_copy = {0,}; + pid_t pid; + + if (!hmode) { + return -1; + } + + if (gfid) { + uuid_copy(gfid_copy,gfid); + } + if (hmode > 1) { + /* + * Why getpid? Because it's one of the cheapest calls + * available - faster than gethostname etc. - and returns a + * constant-length value that's sure to be shorter than a UUID. + * It's still very unlikely to be the same across clients, so + * it still provides good mixing. We're not trying for + * perfection here. All we need is a low probability that + * multiple clients won't converge on the same subvolume. + */ + pid = getpid(); + memcpy (gfid_copy, &pid, sizeof(pid)); + } + + return SuperFastHash((char *)gfid_copy, + sizeof(gfid_copy)) % child_count; +} + +/* If sources is NULL the xattrs are assumed to be of source for all + * success_children. + */ +int +afr_select_read_child_from_policy (int32_t *success_children, + int32_t child_count, int32_t prev_read_child, + int32_t config_read_child, int32_t *sources, + unsigned int hmode, uuid_t gfid) +{ + int32_t read_child = -1; + int i = 0; + + GF_ASSERT (success_children); + + read_child = config_read_child; + if (afr_is_read_child (success_children, sources, child_count, + read_child)) + goto out; + + read_child = prev_read_child; + if (afr_is_read_child (success_children, sources, child_count, + read_child)) + goto out; + + read_child = afr_hash_child (success_children, child_count, + hmode, gfid); + if (afr_is_read_child (success_children, sources, child_count, + read_child)) { + goto out; + } + + for (i = 0; i < child_count; i++) { + read_child = success_children[i]; + if (read_child < 0) + break; + if (afr_is_read_child (success_children, sources, child_count, + read_child)) + goto out; + } + read_child = -1; + +out: + return read_child; +} + +/* This function should be used when all the success_children are sources + */ +void +afr_set_read_ctx_from_policy (xlator_t *this, inode_t *inode, + int32_t *fresh_children, int32_t prev_read_child, + int32_t config_read_child, uuid_t gfid) +{ + int read_child = -1; + afr_private_t *priv = NULL; + + priv = this->private; + read_child = afr_select_read_child_from_policy (fresh_children, + priv->child_count, + prev_read_child, + config_read_child, + NULL, + priv->hash_mode, gfid); + if (read_child >= 0) + afr_inode_set_read_ctx (this, inode, read_child, + fresh_children); +} + +/* afr_next_call_child () + * This is a common function used by all the read-type fops + * This function should not be called with the inode's read_children array. + * The fop's handler should make a copy of the inode's read_children, + * preferred read_child into the local vars, because while this function is + * in execution there is a chance for inode's read_ctx to change. + */ +int32_t +afr_next_call_child (int32_t *fresh_children, unsigned char *child_up, + size_t child_count, int32_t *last_index, + int32_t read_child) +{ + int next_index = 0; + int32_t next_call_child = -1; + + GF_ASSERT (last_index); + + next_index = *last_index; +retry: + next_index++; + if ((next_index >= child_count) || + (fresh_children[next_index] == -1)) + goto out; + if ((fresh_children[next_index] == read_child) || + (!child_up[fresh_children[next_index]])) + goto retry; + *last_index = next_index; + next_call_child = fresh_children[next_index]; +out: + return next_call_child; +} + + /* This function should not be called with the inode's read_children array. + * The fop's handler should make a copy of the inode's read_children, + * preferred read_child into the local vars, because while this function is + * in execution there is a chance for inode's read_ctx to change. + */ +int32_t +afr_get_call_child (xlator_t *this, unsigned char *child_up, int32_t read_child, + int32_t *fresh_children, + int32_t *call_child, int32_t *last_index) +{ + int ret = 0; + afr_private_t *priv = NULL; + int i = 0; + + GF_ASSERT (child_up); + GF_ASSERT (call_child); + GF_ASSERT (last_index); + GF_ASSERT (fresh_children); + + if (read_child < 0) { + ret = -EIO; + goto out; + } + priv = this->private; + *call_child = -1; + *last_index = -1; + + if (child_up[read_child]) { + *call_child = read_child; + } else { + for (i = 0; i < priv->child_count; i++) { + if (fresh_children[i] == -1) + break; + if (child_up[fresh_children[i]]) { + *call_child = fresh_children[i]; + ret = 0; + break; + } + } + + if (*call_child == -1) { + ret = -ENOTCONN; + goto out; + } + + *last_index = i; + } +out: + gf_log (this->name, GF_LOG_DEBUG, "Returning %d, call_child: %d, " + "last_index: %d", ret, *call_child, *last_index); + return ret; +} + +void +afr_reset_xattr (dict_t **xattr, unsigned int child_count) +{ + unsigned int i = 0; + + if (!xattr) + goto out; + for (i = 0; i < child_count; i++) { + if (xattr[i]) { + dict_unref (xattr[i]); + xattr[i] = NULL; + } + } +out: + return; +} + +void +afr_xattr_array_destroy (dict_t **xattr, unsigned int child_count) +{ + afr_reset_xattr (xattr, child_count); + GF_FREE (xattr); +} + +void +afr_local_sh_cleanup (afr_local_t *local, xlator_t *this) +{ + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + + sh = &local->self_heal; + priv = this->private; + + if (sh->data_sh_info && strcmp (sh->data_sh_info, "")) + GF_FREE (sh->data_sh_info); + + if (sh->metadata_sh_info && strcmp (sh->metadata_sh_info, "")) + GF_FREE (sh->metadata_sh_info); + + GF_FREE (sh->buf); + + GF_FREE (sh->parentbufs); + + if (sh->inode) + inode_unref (sh->inode); + + afr_xattr_array_destroy (sh->xattr, priv->child_count); + + GF_FREE (sh->child_errno); + + afr_matrix_cleanup (sh->pending_matrix, priv->child_count); + afr_matrix_cleanup (sh->delta_matrix, priv->child_count); + + GF_FREE (sh->sources); + + GF_FREE (sh->success); + + GF_FREE (sh->locked_nodes); + + if (sh->healing_fd) { + fd_unref (sh->healing_fd); + sh->healing_fd = NULL; + } + + GF_FREE ((char *)sh->linkname); + + GF_FREE (sh->success_children); + + GF_FREE (sh->fresh_children); + + GF_FREE (sh->fresh_parent_dirs); + + loc_wipe (&sh->parent_loc); + loc_wipe (&sh->lookup_loc); + + GF_FREE (sh->checksum); + + GF_FREE (sh->write_needed); + if (sh->healing_fd) + fd_unref (sh->healing_fd); +} + + +void +afr_local_transaction_cleanup (afr_local_t *local, xlator_t *this) +{ + afr_private_t *priv = NULL; + int i = 0; + + priv = this->private; + + afr_matrix_cleanup (local->pending, priv->child_count); + afr_matrix_cleanup (local->transaction.txn_changelog, + priv->child_count); + + GF_FREE (local->internal_lock.locked_nodes); + + for (i = 0; local->internal_lock.inodelk[i].domain; i++) { + GF_FREE (local->internal_lock.inodelk[i].locked_nodes); + } + + GF_FREE (local->internal_lock.lower_locked_nodes); + + afr_entry_lockee_cleanup (&local->internal_lock); + + GF_FREE (local->transaction.pre_op); + GF_FREE (local->transaction.eager_lock); + + GF_FREE (local->transaction.basename); + GF_FREE (local->transaction.new_basename); + + loc_wipe (&local->transaction.parent_loc); + loc_wipe (&local->transaction.new_parent_loc); + + GF_FREE (local->transaction.postop_piggybacked); +} + + +void +afr_local_cleanup (afr_local_t *local, xlator_t *this) +{ + afr_private_t * priv = NULL; + + if (!local) + return; + + afr_local_sh_cleanup (local, this); + + afr_local_transaction_cleanup (local, this); + + priv = this->private; + + loc_wipe (&local->loc); + loc_wipe (&local->newloc); + + if (local->fd) + fd_unref (local->fd); + + if (local->xattr_req) + dict_unref (local->xattr_req); + + if (local->dict) + dict_unref (local->dict); + + GF_FREE(local->replies); + + GF_FREE (local->child_up); + + GF_FREE (local->child_errno); + + GF_FREE (local->fresh_children); + + { /* lookup */ + if (local->cont.lookup.xattrs) { + afr_reset_xattr (local->cont.lookup.xattrs, + priv->child_count); + GF_FREE (local->cont.lookup.xattrs); + local->cont.lookup.xattrs = NULL; + } + + if (local->cont.lookup.xattr) { + dict_unref (local->cont.lookup.xattr); + } + + if (local->cont.lookup.inode) { + inode_unref (local->cont.lookup.inode); + } + + GF_FREE (local->cont.lookup.postparents); + + GF_FREE (local->cont.lookup.bufs); + + GF_FREE (local->cont.lookup.success_children); + + GF_FREE (local->cont.lookup.sources); + afr_matrix_cleanup (local->cont.lookup.pending_matrix, + priv->child_count); + } + + { /* getxattr */ + GF_FREE (local->cont.getxattr.name); + } + + { /* lk */ + GF_FREE (local->cont.lk.locked_nodes); + } + + { /* create */ + if (local->cont.create.fd) + fd_unref (local->cont.create.fd); + if (local->cont.create.params) + dict_unref (local->cont.create.params); + } + + { /* mknod */ + if (local->cont.mknod.params) + dict_unref (local->cont.mknod.params); + } + + { /* mkdir */ + if (local->cont.mkdir.params) + dict_unref (local->cont.mkdir.params); + } + + { /* symlink */ + if (local->cont.symlink.params) + dict_unref (local->cont.symlink.params); + } + + { /* writev */ + GF_FREE (local->cont.writev.vector); + } + + { /* setxattr */ + if (local->cont.setxattr.dict) + dict_unref (local->cont.setxattr.dict); + } + + { /* fsetxattr */ + if (local->cont.fsetxattr.dict) + dict_unref (local->cont.fsetxattr.dict); + } + + { /* removexattr */ + GF_FREE (local->cont.removexattr.name); + } + { /* xattrop */ + if (local->cont.xattrop.xattr) + dict_unref (local->cont.xattrop.xattr); + } + { /* fxattrop */ + if (local->cont.fxattrop.xattr) + dict_unref (local->cont.fxattrop.xattr); + } + { /* symlink */ + GF_FREE (local->cont.symlink.linkpath); + } + + { /* opendir */ + GF_FREE (local->cont.opendir.checksum); + } + + { /* readdirp */ + if (local->cont.readdir.dict) + dict_unref (local->cont.readdir.dict); + } + + if (local->xdata_req) + dict_unref (local->xdata_req); + + if (local->xdata_rsp) + dict_unref (local->xdata_rsp); +} + + +int +afr_frame_return (call_frame_t *frame) +{ + afr_local_t *local = NULL; + int call_count = 0; + + local = frame->local; + + LOCK (&frame->lock); + { + call_count = --local->call_count; + } + UNLOCK (&frame->lock); + + return call_count; +} + +int +afr_set_elem_count_get (unsigned char *elems, int child_count) +{ + int i = 0; + int ret = 0; + + for (i = 0; i < child_count; i++) + if (elems[i]) + ret++; + return ret; +} + +/** + * up_children_count - return the number of children that are up + */ + +unsigned int +afr_up_children_count (unsigned char *child_up, unsigned int child_count) +{ + return afr_set_elem_count_get (child_up, child_count); +} + +unsigned int +afr_locked_children_count (unsigned char *children, unsigned int child_count) +{ + return afr_set_elem_count_get (children, child_count); +} + +unsigned int +afr_pre_op_done_children_count (unsigned char *pre_op, + unsigned int child_count) +{ + return afr_set_elem_count_get (pre_op, child_count); +} + +gf_boolean_t +afr_is_fresh_lookup (loc_t *loc, xlator_t *this) +{ + uint64_t ctx = 0; + int32_t ret = 0; + + GF_ASSERT (loc); + GF_ASSERT (this); + GF_ASSERT (loc->inode); + + ret = inode_ctx_get (loc->inode, this, &ctx); + if (0 == ret) + return _gf_false; + return _gf_true; +} + +void +afr_update_loc_gfids (loc_t *loc, struct iatt *buf, struct iatt *postparent) +{ + GF_ASSERT (loc); + GF_ASSERT (buf); + + uuid_copy (loc->gfid, buf->ia_gfid); + if (postparent) + uuid_copy (loc->pargfid, postparent->ia_gfid); +} + +/* + * Quota size xattrs are not maintained by afr. There is a + * possibility that they differ even when both the directory changelog xattrs + * suggest everything is fine. So if there is at least one 'source' check among + * the sources which has the maximum quota size. Otherwise check among all the + * available ones for maximum quota size. This way if there is a source and + * stale copies it always votes for the 'source'. + * */ + +static void +afr_handle_quota_size (afr_local_t *local, xlator_t *this, + dict_t *rsp_dict) +{ + int32_t *sources = NULL; + dict_t *xattr = NULL; + data_t *max_data = NULL; + int64_t max_quota_size = -1; + data_t *data = NULL; + int64_t *size = NULL; + int64_t quota_size = -1; + afr_private_t *priv = NULL; + int i = 0; + int ret = -1; + gf_boolean_t source_present = _gf_false; + + priv = this->private; + sources = local->cont.lookup.sources; + + if (rsp_dict == NULL) { + gf_log_callingfn (this->name, GF_LOG_ERROR, "%s: Invalid " + "response dictionary", local->loc.path); + return; + } + + for (i = 0; i < priv->child_count; i++) { + if (sources[i]) { + source_present = _gf_true; + break; + } + } + + for (i = 0; i < priv->child_count; i++) { + /* + * If there is at least one source lets check + * for maximum quota sizes among sources, otherwise take the + * maximum of the ones present to be on the safer side. + */ + if (source_present && !sources[i]) + continue; + + xattr = local->cont.lookup.xattrs[i]; + if (!xattr) + continue; + + data = dict_get (xattr, QUOTA_SIZE_KEY); + if (!data) + continue; + + size = (int64_t*)data->data; + quota_size = ntoh64(*size); + gf_log (this->name, GF_LOG_DEBUG, "%s: %d, size: %"PRId64, + local->loc.path, i, quota_size); + if (quota_size > max_quota_size) { + if (max_data) + data_unref (max_data); + + max_quota_size = quota_size; + max_data = data_ref (data); + } + } + + if (max_data) { + ret = dict_set (rsp_dict, QUOTA_SIZE_KEY, max_data); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "%s: Failed to set " + "quota size", local->loc.path); + } + + data_unref (max_data); + } +} + +int +afr_lookup_build_response_params (afr_local_t *local, xlator_t *this) +{ + struct iatt *buf = NULL; + struct iatt *postparent = NULL; + dict_t **xattr = NULL; + int32_t *success_children = NULL; + int32_t *sources = NULL; + afr_private_t *priv = NULL; + int32_t read_child = -1; + int ret = 0; + int i = 0; + + GF_ASSERT (local); + + buf = &local->cont.lookup.buf; + postparent = &local->cont.lookup.postparent; + xattr = &local->cont.lookup.xattr; + priv = this->private; + + read_child = afr_inode_get_read_ctx (this, local->cont.lookup.inode, + local->fresh_children); + if (read_child < 0) { + ret = -1; + goto out; + } + success_children = local->cont.lookup.success_children; + sources = local->cont.lookup.sources; + memset (sources, 0, sizeof (*sources) * priv->child_count); + afr_children_intersection_get (local->fresh_children, success_children, + sources, priv->child_count); + if (!sources[read_child]) { + read_child = -1; + for (i = 0; i < priv->child_count; i++) { + if (sources[i]) { + read_child = i; + break; + } + } + } + if (read_child < 0) { + ret = -1; + goto out; + } + + gf_log (this->name, GF_LOG_DEBUG, "Building lookup response from %d", + read_child); + if (!*xattr) + *xattr = dict_ref (local->cont.lookup.xattrs[read_child]); + + *buf = local->cont.lookup.bufs[read_child]; + *postparent = local->cont.lookup.postparents[read_child]; + + if (dict_get (local->xattr_req, QUOTA_SIZE_KEY)) + afr_handle_quota_size (local, this, *xattr); + + if (IA_INVAL == local->cont.lookup.inode->ia_type) { + /* fix for RT #602 */ + local->cont.lookup.inode->ia_type = buf->ia_type; + } +out: + return ret; +} + +static void +afr_lookup_update_lk_counts (afr_local_t *local, xlator_t *this, + int child_index, dict_t *xattr) +{ + uint32_t inodelk_count = 0; + uint32_t entrylk_count = 0; + int ret = -1; + uint32_t parent_entrylk = 0; + + GF_ASSERT (local); + GF_ASSERT (this); + GF_ASSERT (xattr); + GF_ASSERT (child_index >= 0); + + ret = dict_get_uint32 (xattr, GLUSTERFS_INODELK_COUNT, + &inodelk_count); + if (ret == 0) + local->inodelk_count += inodelk_count; + + ret = dict_get_uint32 (xattr, GLUSTERFS_ENTRYLK_COUNT, + &entrylk_count); + if (ret == 0) + local->entrylk_count += entrylk_count; + ret = dict_get_uint32 (xattr, GLUSTERFS_PARENT_ENTRYLK, + &parent_entrylk); + if (!ret) + local->cont.lookup.parent_entrylk += parent_entrylk; +} + +/* + * It's important to maintain a commutative property on do_*_self_heal and + * found*; once set, they must not be cleared by a subsequent iteration or + * call, so that they represent a logical OR of all iterations and calls + * regardless of child/key order. That allows the caller to call us multiple + * times without having to use a separate variable as a "reduce" accumulator. + */ +static void +afr_lookup_set_self_heal_params_by_xattr (afr_local_t *local, xlator_t *this, + dict_t *xattr) +{ + afr_private_t *priv = NULL; + int i = 0; + int ret = -1; + void *pending_raw = NULL; + int32_t *pending = NULL; + + GF_ASSERT (local); + GF_ASSERT (this); + GF_ASSERT (xattr); + + priv = this->private; + + for (i = 0; i < priv->child_count; i++) { + ret = dict_get_ptr (xattr, priv->pending_key[i], + &pending_raw); + if (ret != 0) { + continue; + } + pending = pending_raw; + + if (pending[AFR_METADATA_TRANSACTION]) { + gf_log(this->name, GF_LOG_DEBUG, + "metadata self-heal is pending for %s.", + local->loc.path); + local->self_heal.do_metadata_self_heal = _gf_true; + } + + if (pending[AFR_ENTRY_TRANSACTION]) { + gf_log(this->name, GF_LOG_DEBUG, + "entry self-heal is pending for %s.", + local->loc.path); + local->self_heal.do_entry_self_heal = _gf_true; + } + + if (pending[AFR_DATA_TRANSACTION]) { + gf_log(this->name, GF_LOG_DEBUG, + "data self-heal is pending for %s.", + local->loc.path); + local->self_heal.do_data_self_heal = _gf_true; + } + } +} + +void +afr_lookup_check_set_metadata_split_brain (afr_local_t *local, xlator_t *this) +{ + int32_t *sources = NULL; + afr_private_t *priv = NULL; + int32_t subvol_status = 0; + int32_t *success_children = NULL; + dict_t **xattrs = NULL; + struct iatt *bufs = NULL; + int32_t **pending_matrix = NULL; + + priv = this->private; + + sources = GF_CALLOC (priv->child_count, sizeof (*sources), + gf_afr_mt_int32_t); + if (NULL == sources) + goto out; + success_children = local->cont.lookup.success_children; + xattrs = local->cont.lookup.xattrs; + bufs = local->cont.lookup.bufs; + pending_matrix = local->cont.lookup.pending_matrix; + afr_build_sources (this, xattrs, bufs, pending_matrix, + sources, success_children, AFR_METADATA_TRANSACTION, + &subvol_status, _gf_false); + if (subvol_status & SPLIT_BRAIN) + local->cont.lookup.possible_spb = _gf_true; +out: + GF_FREE (sources); +} + +static void +afr_detect_self_heal_by_iatt (afr_local_t *local, xlator_t *this, + struct iatt *buf, struct iatt *lookup_buf) +{ + if (PERMISSION_DIFFERS (buf, lookup_buf)) { + /* mismatching permissions */ + gf_log (this->name, GF_LOG_DEBUG, + "permissions differ for %s ", local->loc.path); + local->self_heal.do_metadata_self_heal = _gf_true; + } + + if (OWNERSHIP_DIFFERS (buf, lookup_buf)) { + /* mismatching permissions */ + local->self_heal.do_metadata_self_heal = _gf_true; + gf_log (this->name, GF_LOG_DEBUG, + "ownership differs for %s ", local->loc.path); + } + + if (SIZE_DIFFERS (buf, lookup_buf) + && IA_ISREG (buf->ia_type)) { + gf_log (this->name, GF_LOG_DEBUG, + "size differs for %s ", local->loc.path); + local->self_heal.do_data_self_heal = _gf_true; + } + + if (uuid_compare (buf->ia_gfid, lookup_buf->ia_gfid)) { + /* mismatching gfid */ + gf_log (this->name, GF_LOG_DEBUG, + "%s: gfid different on subvolume", local->loc.path); + } +} + +static void +afr_detect_self_heal_by_split_brain_status (afr_local_t *local, xlator_t *this) +{ + gf_boolean_t split_brain = _gf_false; + afr_self_heal_t *sh = NULL; + + sh = &local->self_heal; + + split_brain = afr_is_split_brain (this, local->cont.lookup.inode); + split_brain = split_brain || local->cont.lookup.possible_spb; + if ((local->success_count > 0) && split_brain && + IA_ISREG (local->cont.lookup.inode->ia_type)) { + sh->force_confirm_spb = _gf_true; + gf_log (this->name, GF_LOG_DEBUG, + "split brain detected during lookup of %s.", + local->loc.path); + } +} + +static void +afr_detect_self_heal_by_lookup_status (afr_local_t *local, xlator_t *this) +{ + GF_ASSERT (local); + GF_ASSERT (this); + + if ((local->success_count > 0) && (local->enoent_count > 0)) { + local->self_heal.do_metadata_self_heal = _gf_true; + local->self_heal.do_data_self_heal = _gf_true; + local->self_heal.do_entry_self_heal = _gf_true; + local->self_heal.do_gfid_self_heal = _gf_true; + local->self_heal.do_missing_entry_self_heal = _gf_true; + gf_log(this->name, GF_LOG_DEBUG, + "entries are missing in lookup of %s.", + local->loc.path); + } + + return; +} + +gf_boolean_t +afr_can_self_heal_proceed (afr_self_heal_t *sh, afr_private_t *priv) +{ + GF_ASSERT (sh); + GF_ASSERT (priv); + + if (sh->force_confirm_spb) + return _gf_true; + return (sh->do_gfid_self_heal + || sh->do_missing_entry_self_heal + || (afr_data_self_heal_enabled (priv->data_self_heal) && + sh->do_data_self_heal) + || (priv->metadata_self_heal && sh->do_metadata_self_heal) + || (priv->entry_self_heal && sh->do_entry_self_heal)); +} + +afr_transaction_type +afr_transaction_type_get (ia_type_t ia_type) +{ + afr_transaction_type type = AFR_METADATA_TRANSACTION; + + GF_ASSERT (ia_type != IA_INVAL); + + if (IA_ISDIR (ia_type)) { + type = AFR_ENTRY_TRANSACTION; + } else if (IA_ISREG (ia_type)) { + type = AFR_DATA_TRANSACTION; + } + return type; +} + +int +afr_lookup_select_read_child (afr_local_t *local, xlator_t *this, + int32_t *read_child) +{ + ia_type_t ia_type = IA_INVAL; + int32_t source = -1; + int ret = -1; + dict_t **xattrs = NULL; + int32_t *success_children = NULL; + afr_transaction_type type = AFR_METADATA_TRANSACTION; + uuid_t *gfid = NULL; + + GF_ASSERT (local); + GF_ASSERT (this); + GF_ASSERT (local->success_count > 0); + + success_children = local->cont.lookup.success_children; + /*We can take the success_children[0] only because we already + *handle the conflicting children other wise, we could select the + *read_child based on wrong file type + */ + ia_type = local->cont.lookup.bufs[success_children[0]].ia_type; + type = afr_transaction_type_get (ia_type); + xattrs = local->cont.lookup.xattrs; + gfid = &local->cont.lookup.buf.ia_gfid; + source = afr_lookup_select_read_child_by_txn_type (this, local, xattrs, + type, *gfid); + if (source < 0) { + gf_log (this->name, GF_LOG_DEBUG, "failed to select source " + "for %s", local->loc.path); + goto out; + } + + gf_log (this->name, GF_LOG_DEBUG, "Source selected as %d for %s", + source, local->loc.path); + *read_child = source; + ret = 0; +out: + return ret; +} + +static inline gf_boolean_t +afr_is_transaction_running (afr_local_t *local) +{ + GF_ASSERT (local->fop == GF_FOP_LOOKUP); + return ((local->inodelk_count > 0) || (local->entrylk_count > 0)); +} + +void +afr_launch_self_heal (call_frame_t *frame, xlator_t *this, inode_t *inode, + gf_boolean_t background, ia_type_t ia_type, char *reason, + void (*gfid_sh_success_cbk) (call_frame_t *sh_frame, + xlator_t *this), + int (*unwind) (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno, + int32_t sh_failed)) +{ + afr_local_t *local = NULL; + char sh_type_str[256] = {0,}; + char *bg = ""; + + GF_ASSERT (frame); + GF_ASSERT (this); + GF_ASSERT (inode); + GF_ASSERT (ia_type != IA_INVAL); + + local = frame->local; + local->self_heal.background = background; + local->self_heal.type = ia_type; + local->self_heal.unwind = unwind; + local->self_heal.gfid_sh_success_cbk = gfid_sh_success_cbk; + + afr_self_heal_type_str_get (&local->self_heal, + sh_type_str, + sizeof (sh_type_str)); + + if (background) + bg = "background"; + gf_log (this->name, GF_LOG_DEBUG, + "%s %s self-heal triggered. path: %s, reason: %s", bg, + sh_type_str, local->loc.path, reason); + + afr_self_heal (frame, this, inode); +} + +unsigned int +afr_gfid_missing_count (const char *xlator_name, int32_t *success_children, + struct iatt *bufs, unsigned int child_count, + const char *path) +{ + unsigned int gfid_miss_count = 0; + int i = 0; + struct iatt *child1 = NULL; + + for (i = 0; i < child_count; i++) { + if (success_children[i] == -1) + break; + child1 = &bufs[success_children[i]]; + if (uuid_is_null (child1->ia_gfid)) { + gf_log (xlator_name, GF_LOG_DEBUG, "%s: gfid is null" + " on subvolume %d", path, success_children[i]); + gfid_miss_count++; + } + } + + return gfid_miss_count; +} + +static int +afr_lookup_gfid_missing_count (afr_local_t *local, xlator_t *this) +{ + int32_t *success_children = NULL; + afr_private_t *priv = NULL; + struct iatt *bufs = NULL; + int miss_count = 0; + + priv = this->private; + bufs = local->cont.lookup.bufs; + success_children = local->cont.lookup.success_children; + + miss_count = afr_gfid_missing_count (this->name, success_children, + bufs, priv->child_count, + local->loc.path); + return miss_count; +} + +gf_boolean_t +afr_conflicting_iattrs (struct iatt *bufs, int32_t *success_children, + unsigned int child_count, const char *path, + const char *xlator_name) +{ + gf_boolean_t conflicting = _gf_false; + int i = 0; + struct iatt *child1 = NULL; + struct iatt *child2 = NULL; + uuid_t *gfid = NULL; + + for (i = 0; i < child_count; i++) { + if (success_children[i] == -1) + break; + child1 = &bufs[success_children[i]]; + if ((!gfid) && (!uuid_is_null (child1->ia_gfid))) + gfid = &child1->ia_gfid; + + if (i == 0) + continue; + + child2 = &bufs[success_children[i-1]]; + if (FILETYPE_DIFFERS (child1, child2)) { + gf_log (xlator_name, GF_LOG_DEBUG, "%s: filetype " + "differs on subvolumes (%d, %d)", path, + success_children[i-1], success_children[i]); + conflicting = _gf_true; + goto out; + } + if (!gfid || uuid_is_null (child1->ia_gfid)) + continue; + if (uuid_compare (*gfid, child1->ia_gfid)) { + gf_log (xlator_name, GF_LOG_DEBUG, "%s: gfid differs" + " on subvolume %d", path, success_children[i]); + conflicting = _gf_true; + goto out; + } + } +out: + return conflicting; +} + +/* afr_update_gfid_from_iatts: This function should be called only if the + * iatts are not conflicting. + */ +void +afr_update_gfid_from_iatts (uuid_t uuid, struct iatt *bufs, + int32_t *success_children, unsigned int child_count) +{ + uuid_t *gfid = NULL; + int i = 0; + int child = 0; + + for (i = 0; i < child_count; i++) { + child = success_children[i]; + if (child == -1) + break; + if ((!gfid) && (!uuid_is_null (bufs[child].ia_gfid))) { + gfid = &bufs[child].ia_gfid; + } else if (gfid && (!uuid_is_null (bufs[child].ia_gfid))) { + if (uuid_compare (*gfid, bufs[child].ia_gfid)) { + GF_ASSERT (0); + goto out; + } + } + } + if (gfid && (!uuid_is_null (*gfid))) + uuid_copy (uuid, *gfid); +out: + return; +} + +static gf_boolean_t +afr_lookup_conflicting_entries (afr_local_t *local, xlator_t *this) +{ + afr_private_t *priv = NULL; + gf_boolean_t conflict = _gf_false; + + priv = this->private; + conflict = afr_conflicting_iattrs (local->cont.lookup.bufs, + local->cont.lookup.success_children, + priv->child_count, local->loc.path, + this->name); + return conflict; +} + +gf_boolean_t +afr_open_only_data_self_heal (char *data_self_heal) +{ + return !strcmp (data_self_heal, "open"); +} + +gf_boolean_t +afr_data_self_heal_enabled (char *data_self_heal) +{ + gf_boolean_t enabled = _gf_false; + + if (gf_string2boolean (data_self_heal, &enabled) == -1) { + enabled = !strcmp (data_self_heal, "open"); + GF_ASSERT (enabled); + } + + return enabled; +} + +static void +afr_lookup_set_self_heal_params (afr_local_t *local, xlator_t *this) +{ + int i = 0; + struct iatt *bufs = NULL; + dict_t **xattr = NULL; + afr_private_t *priv = NULL; + int32_t child1 = -1; + int32_t child2 = -1; + afr_self_heal_t *sh = NULL; + + priv = this->private; + sh = &local->self_heal; + + afr_detect_self_heal_by_lookup_status (local, this); + + if (afr_lookup_gfid_missing_count (local, this)) + local->self_heal.do_gfid_self_heal = _gf_true; + + if (_gf_true == afr_lookup_conflicting_entries (local, this)) + local->self_heal.do_missing_entry_self_heal = _gf_true; + else + afr_update_gfid_from_iatts (local->self_heal.sh_gfid_req, + local->cont.lookup.bufs, + local->cont.lookup.success_children, + priv->child_count); + + bufs = local->cont.lookup.bufs; + for (i = 1; i < local->success_count; i++) { + child1 = local->cont.lookup.success_children[i-1]; + child2 = local->cont.lookup.success_children[i]; + afr_detect_self_heal_by_iatt (local, this, + &bufs[child1], &bufs[child2]); + } + + xattr = local->cont.lookup.xattrs; + for (i = 0; i < local->success_count; i++) { + child1 = local->cont.lookup.success_children[i]; + afr_lookup_set_self_heal_params_by_xattr (local, this, + xattr[child1]); + } + if (afr_open_only_data_self_heal (priv->data_self_heal)) + sh->do_data_self_heal = _gf_false; + if (sh->do_metadata_self_heal) + afr_lookup_check_set_metadata_split_brain (local, this); + afr_detect_self_heal_by_split_brain_status (local, this); +} + +int +afr_self_heal_lookup_unwind (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno, + int32_t sh_failed) +{ + afr_local_t *local = NULL; + int ret = -1; + dict_t *xattr = NULL; + + local = frame->local; + + if (op_ret == -1) { + local->op_ret = -1; + local->op_errno = afr_most_important_error(local->op_errno, + op_errno, _gf_true); + + goto out; + } else { + local->op_ret = 0; + } + + afr_lookup_done_success_action (frame, this, _gf_true); + xattr = local->cont.lookup.xattr; + if (xattr) { + ret = dict_set_int32 (xattr, "sh-failed", sh_failed); + if (ret) + gf_log (this->name, GF_LOG_ERROR, "%s: Failed to set " + "sh-failed to %d", local->loc.path, sh_failed); + + if (local->self_heal.actual_sh_started == _gf_true && + sh_failed == 0) { + ret = dict_set_int32 (xattr, "actual-sh-done", 1); + if (ret) + gf_log(this->name, GF_LOG_ERROR, "%s: Failed to" + " set actual-sh-done to %d", + local->loc.path, + local->self_heal.actual_sh_started); + } + } +out: + AFR_STACK_UNWIND (lookup, frame, local->op_ret, local->op_errno, + local->cont.lookup.inode, &local->cont.lookup.buf, + local->cont.lookup.xattr, + &local->cont.lookup.postparent); + + return 0; +} + +//TODO: At the moment only lookup needs this, so not doing any checks, in the +// future we will have to do fop specific operations +void +afr_post_gfid_sh_success (call_frame_t *sh_frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_local_t *sh_local = NULL; + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + int i = 0; + struct iatt *lookup_bufs = NULL; + struct iatt *lookup_parentbufs = NULL; + + sh_local = sh_frame->local; + sh = &sh_local->self_heal; + local = sh->orig_frame->local; + lookup_bufs = local->cont.lookup.bufs; + lookup_parentbufs = local->cont.lookup.postparents; + priv = this->private; + + memcpy (lookup_bufs, sh->buf, priv->child_count * sizeof (*sh->buf)); + memcpy (lookup_parentbufs, sh->parentbufs, + priv->child_count * sizeof (*sh->parentbufs)); + + afr_reset_xattr (local->cont.lookup.xattrs, priv->child_count); + if (local->cont.lookup.xattr) { + dict_unref (local->cont.lookup.xattr); + local->cont.lookup.xattr = NULL; + } + + for (i = 0; i < priv->child_count; i++) { + if (sh->xattr[i]) + local->cont.lookup.xattrs[i] = dict_ref (sh->xattr[i]); + } + + afr_reset_children (local->cont.lookup.success_children, + priv->child_count); + afr_children_copy (local->cont.lookup.success_children, + sh->fresh_children, priv->child_count); +} + +static void +afr_lookup_perform_self_heal (call_frame_t *frame, xlator_t *this, + gf_boolean_t *sh_launched) +{ + unsigned int up_count = 0; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + char *reason = NULL; + + GF_ASSERT (sh_launched); + *sh_launched = _gf_false; + priv = this->private; + local = frame->local; + + up_count = afr_up_children_count (local->child_up, priv->child_count); + if (up_count == 1) { + gf_log (this->name, GF_LOG_DEBUG, + "Only 1 child up - do not attempt to detect self heal"); + goto out; + } + + afr_lookup_set_self_heal_params (local, this); + if (afr_can_self_heal_proceed (&local->self_heal, priv)) { + if (afr_is_transaction_running (local) && + (!local->allow_sh_for_running_transaction)) + goto out; + + reason = "lookup detected pending operations"; + afr_launch_self_heal (frame, this, local->cont.lookup.inode, + _gf_true, local->cont.lookup.buf.ia_type, + reason, afr_post_gfid_sh_success, + afr_self_heal_lookup_unwind); + *sh_launched = _gf_true; + } +out: + return; +} + +void +afr_get_fresh_children (int32_t *success_children, int32_t *sources, + int32_t *fresh_children, unsigned int child_count) +{ + unsigned int i = 0; + unsigned int j = 0; + + GF_ASSERT (success_children); + GF_ASSERT (sources); + GF_ASSERT (fresh_children); + + afr_reset_children (fresh_children, child_count); + for (i = 0; i < child_count; i++) { + if (success_children[i] == -1) + break; + if (afr_is_read_child (success_children, sources, child_count, + success_children[i])) { + fresh_children[j] = success_children[i]; + j++; + } + } +} + +static int +afr_lookup_set_read_ctx (afr_local_t *local, xlator_t *this, int32_t read_child) +{ + afr_private_t *priv = NULL; + + GF_ASSERT (read_child >= 0); + + priv = this->private; + afr_get_fresh_children (local->cont.lookup.success_children, + local->cont.lookup.sources, + local->fresh_children, priv->child_count); + afr_inode_set_read_ctx (this, local->cont.lookup.inode, read_child, + local->fresh_children); + + return 0; +} + +int +afr_lookup_done_success_action (call_frame_t *frame, xlator_t *this, + gf_boolean_t fail_conflict) +{ + int32_t read_child = -1; + int32_t ret = -1; + afr_local_t *local = NULL; + gf_boolean_t fresh_lookup = _gf_false; + + local = frame->local; + fresh_lookup = local->cont.lookup.fresh_lookup; + + if (local->loc.parent == NULL) + fail_conflict = _gf_true; + + if (afr_lookup_conflicting_entries (local, this)) { + if (fail_conflict == _gf_false) + ret = 0; + goto out; + } + + ret = afr_lookup_select_read_child (local, this, &read_child); + if (!afr_is_transaction_running (local) || fresh_lookup) { + if (read_child < 0) + goto out; + + ret = afr_lookup_set_read_ctx (local, this, read_child); + if (ret) + goto out; + } + + ret = afr_lookup_build_response_params (local, this); + if (ret) + goto out; + afr_update_loc_gfids (&local->loc, + &local->cont.lookup.buf, + &local->cont.lookup.postparent); + + ret = 0; +out: + if (ret) { + local->op_ret = -1; + local->op_errno = EIO; + } + return ret; +} + +int +afr_lookup_get_latest_subvol (afr_local_t *local, xlator_t *this) +{ + afr_private_t *priv = NULL; + int32_t *success_children = NULL; + struct iatt *bufs = NULL; + int i = 0; + int child = 0; + int lsubvol = -1; + + priv = this->private; + success_children = local->cont.lookup.success_children; + bufs = local->cont.lookup.bufs; + for (i = 0; i < priv->child_count; i++) { + child = success_children[i]; + if (child == -1) + break; + if (uuid_is_null (bufs[child].ia_gfid)) + continue; + if (lsubvol < 0) { + lsubvol = child; + } else if (bufs[lsubvol].ia_ctime < bufs[child].ia_ctime) { + lsubvol = child; + } else if ((bufs[lsubvol].ia_ctime == bufs[child].ia_ctime) && + (bufs[lsubvol].ia_ctime_nsec < bufs[child].ia_ctime_nsec)) { + lsubvol = child; + } + } + return lsubvol; +} + +void +afr_lookup_mark_other_entries_stale (afr_local_t *local, xlator_t *this, + int subvol) +{ + afr_private_t *priv = NULL; + int32_t *success_children = NULL; + struct iatt *bufs = NULL; + int i = 0; + int child = 0; + + priv = this->private; + success_children = local->cont.lookup.success_children; + bufs = local->cont.lookup.bufs; + memcpy (local->fresh_children, success_children, + sizeof (*success_children) * priv->child_count); + for (i = 0; i < priv->child_count; i++) { + child = local->fresh_children[i]; + if (child == -1) + break; + if (child == subvol) + continue; + if (uuid_is_null (bufs[child].ia_gfid) && + (bufs[child].ia_type == bufs[subvol].ia_type)) + continue; + afr_children_rm_child (success_children, child, + priv->child_count); + local->success_count--; + } + afr_reset_children (local->fresh_children, priv->child_count); +} + +void +afr_succeed_lookup_on_latest_iatt (afr_local_t *local, xlator_t *this) +{ + int lsubvol = 0; + + if (!afr_lookup_conflicting_entries (local, this)) + goto out; + + lsubvol = afr_lookup_get_latest_subvol (local, this); + if (lsubvol < 0) + goto out; + afr_lookup_mark_other_entries_stale (local, this, lsubvol); +out: + return; +} + +gf_boolean_t +afr_is_entry_possibly_under_creation (afr_local_t *local, xlator_t *this) +{ + /* + * We need to perform this test in lookup done and treat on going + * create/DELETE as ENOENT. + * Reason: + Multiple clients A, B and C are attempting 'mkdir -p /mnt/a/b/c' + + 1 Client A is in the middle of mkdir(/a). It has acquired lock. + It has performed mkdir(/a) on one subvol, and second one is still + in progress + 2 Client B performs a lookup, sees directory /a on one, + ENOENT on the other, succeeds lookup. + 3 Client B performs lookup on /a/b on both subvols, both return ENOENT + (one subvol because /a/b does not exist, another because /a + itself does not exist) + 4 Client B proceeds to mkdir /a/b. It obtains entrylk on inode=/a with + basename=b on one subvol, but fails on other subvol as /a is yet to + be created by Client A. + 5 Client A finishes mkdir of /a on other subvol + 6 Client C also attempts to create /a/b, lookup returns ENOENT on + both subvols. + 7 Client C tries to obtain entrylk on on inode=/a with basename=b, + obtains on one subvol (where B had failed), and waits for B to unlock + on other subvol. + 8 Client B finishes mkdir() on one subvol with GFID-1 and completes + transaction and unlocks + 9 Client C gets the lock on the second subvol, At this stage second + subvol already has /a/b created from Client B, but Client C does not + check that in the middle of mkdir transaction + 10 Client C attempts mkdir /a/b on both subvols. It succeeds on + ONLY ONE (where Client B could not get lock because of + missing parent /a dir) with GFID-2, and gets EEXIST from ONE subvol. + This way we have /a/b in GFID mismatch. One subvol got GFID-1 because + Client B performed transaction on only one subvol (because entrylk() + could not be obtained on second subvol because of missing parent dir -- + caused by premature/speculative succeeding of lookup() on /a when locks + are detected). Other subvol gets GFID-2 from Client C because while + it was waiting for entrylk() on both subvols, Client B was in the + middle of creating mkdir() on only one subvol, and Client C does not + "expect" this when it is between lock() and pre-op()/op() phase of the + transaction. + */ + if (local->cont.lookup.parent_entrylk && local->enoent_count) + return _gf_true; + + return _gf_false; +} + + +static void +afr_lookup_done (call_frame_t *frame, xlator_t *this) +{ + int unwind = 1; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int ret = -1; + gf_boolean_t sh_launched = _gf_false; + gf_boolean_t fail_conflict = _gf_false; + int gfid_miss_count = 0; + int enotconn_count = 0; + int up_children_count = 0; + + priv = this->private; + local = frame->local; + + if (afr_is_entry_possibly_under_creation (local, this)) { + local->op_ret = -1; + local->op_errno = ENOENT; + goto unwind; + } + + if (local->op_ret < 0) + goto unwind; + + if (local->cont.lookup.parent_entrylk && local->success_count > 1) + afr_succeed_lookup_on_latest_iatt (local, this); + + gfid_miss_count = afr_lookup_gfid_missing_count (local, this); + up_children_count = afr_up_children_count (local->child_up, + priv->child_count); + enotconn_count = priv->child_count - up_children_count; + if ((gfid_miss_count == local->success_count) && + (enotconn_count > 0)) { + local->op_ret = -1; + local->op_errno = EIO; + gf_log (this->name, GF_LOG_ERROR, "Failing lookup for %s, " + "LOOKUP on a file without gfid is not allowed when " + "some of the children are down", local->loc.path); + goto unwind; + } + + if ((gfid_miss_count == local->success_count) && + uuid_is_null (local->cont.lookup.gfid_req)) { + local->op_ret = -1; + local->op_errno = ENODATA; + gf_log (this->name, GF_LOG_ERROR, "%s: No gfid present", + local->loc.path); + goto unwind; + } + + if (gfid_miss_count && uuid_is_null (local->cont.lookup.gfid_req)) + fail_conflict = _gf_true; + ret = afr_lookup_done_success_action (frame, this, fail_conflict); + if (ret) + goto unwind; + uuid_copy (local->self_heal.sh_gfid_req, local->cont.lookup.gfid_req); + + afr_lookup_perform_self_heal (frame, this, &sh_launched); + if (sh_launched) { + unwind = 0; + goto unwind; + } + + unwind: + if (unwind) { + AFR_STACK_UNWIND (lookup, frame, local->op_ret, + local->op_errno, local->cont.lookup.inode, + &local->cont.lookup.buf, + local->cont.lookup.xattr, + &local->cont.lookup.postparent); + } +} + +/* + * During a lookup, some errors are more "important" than + * others in that they must be given higher priority while + * returning to the user. + * + * The hierarchy is ESTALE > EIO > ENOENT > others + */ +int32_t +afr_most_important_error(int32_t old_errno, int32_t new_errno, + gf_boolean_t eio) +{ + if (old_errno == ESTALE || new_errno == ESTALE) + return ESTALE; + if (eio && (old_errno == EIO || new_errno == EIO)) + return EIO; + if (old_errno == ENOENT || new_errno == ENOENT) + return ENOENT; + + return new_errno; +} + +int32_t +afr_resultant_errno_get (int32_t *children, + int *child_errno, unsigned int child_count) +{ + int i = 0; + int32_t op_errno = 0; + int child = 0; + + for (i = 0; i < child_count; i++) { + if (children) { + child = children[i]; + if (child == -1) + break; + } else { + child = i; + } + op_errno = afr_most_important_error(op_errno, + child_errno[child], + _gf_false); + } + return op_errno; +} + +static void +afr_lookup_handle_error (afr_local_t *local, int32_t op_ret, int32_t op_errno) +{ + GF_ASSERT (local); + if (op_errno == ENOENT) + local->enoent_count++; + + local->op_errno = afr_most_important_error(local->op_errno, op_errno, + _gf_false); + + if (local->op_errno == ESTALE) { + local->op_ret = -1; + } +} + +static void +afr_set_root_inode_on_first_lookup (afr_local_t *local, xlator_t *this, + inode_t *inode) +{ + afr_private_t *priv = NULL; + GF_ASSERT (inode); + + if (!__is_root_gfid (inode->gfid)) + goto out; + if (!afr_is_fresh_lookup (&local->loc, this)) + goto out; + priv = this->private; + if ((priv->first_lookup)) { + gf_log (this->name, GF_LOG_INFO, "added root inode"); + priv->root_inode = inode_ref (inode); + priv->first_lookup = 0; + } +out: + return; +} + +static void +afr_lookup_cache_args (afr_local_t *local, int child_index, dict_t *xattr, + struct iatt *buf, struct iatt *postparent) +{ + GF_ASSERT (child_index >= 0); + local->cont.lookup.xattrs[child_index] = dict_ref (xattr); + local->cont.lookup.postparents[child_index] = *postparent; + local->cont.lookup.bufs[child_index] = *buf; +} + +static void +afr_lookup_handle_first_success (afr_local_t *local, xlator_t *this, + inode_t *inode, struct iatt *buf) +{ + local->cont.lookup.inode = inode_ref (inode); + local->cont.lookup.buf = *buf; + afr_set_root_inode_on_first_lookup (local, this, inode); +} + +static int32_t +afr_discovery_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *dict, + dict_t *xdata) +{ + int ret = 0; + char *pathinfo = NULL; + gf_boolean_t is_local = _gf_false; + afr_private_t *priv = NULL; + int32_t child_index = -1; + + if (op_ret != 0) { + goto out; + } + + ret = dict_get_str (dict, GF_XATTR_PATHINFO_KEY, &pathinfo); + if (ret != 0) { + goto out; + } + + ret = afr_local_pathinfo (pathinfo, &is_local); + if (ret) { + goto out; + } + + priv = this->private; + /* + * Note that one local subvolume will override another here. The only + * way to avoid that would be to retain extra information about whether + * the previous read_child is local, and it's just not worth it. Even + * the slowest local subvolume is far preferable to a remote one. + */ + if (is_local) { + child_index = (int32_t)(long)cookie; + gf_log (this->name, GF_LOG_INFO, + "selecting local read_child %s", + priv->children[child_index]->name); + priv->read_child = child_index; + } + +out: + STACK_DESTROY(frame->root); + return 0; +} + +static void +afr_attempt_local_discovery (xlator_t *this, int32_t child_index) +{ + call_frame_t *newframe = NULL; + loc_t tmploc = {0,}; + afr_private_t *priv = this->private; + + newframe = create_frame(this,this->ctx->pool); + if (!newframe) { + return; + } + + tmploc.gfid[sizeof(tmploc.gfid)-1] = 1; + STACK_WIND_COOKIE (newframe, afr_discovery_cbk, + (void *)(long)child_index, + priv->children[child_index], + priv->children[child_index]->fops->getxattr, + &tmploc, GF_XATTR_PATHINFO_KEY, NULL); +} + +static void +afr_lookup_handle_success (afr_local_t *local, xlator_t *this, int32_t child_index, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, dict_t *xattr, + struct iatt *postparent) +{ + afr_private_t *priv = this->private; + + if (local->success_count == 0) { + if (local->op_errno != ESTALE) { + local->op_ret = op_ret; + local->op_errno = 0; + } + afr_lookup_handle_first_success (local, this, inode, buf); + } + afr_lookup_update_lk_counts (local, this, + child_index, xattr); + + afr_lookup_cache_args (local, child_index, xattr, + buf, postparent); + + if (local->do_discovery && (priv->read_child == (-1))) { + afr_attempt_local_discovery(this,child_index); + } + + local->cont.lookup.success_children[local->success_count] = child_index; + local->success_count++; +} + +int +afr_lookup_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *buf, dict_t *xattr, + struct iatt *postparent) +{ + afr_local_t * local = NULL; + int call_count = -1; + int child_index = -1; + + child_index = (long) cookie; + + LOCK (&frame->lock); + { + local = frame->local; + + if (op_ret == -1) { + afr_lookup_handle_error (local, op_ret, op_errno); + goto unlock; + } + afr_lookup_handle_success (local, this, child_index, op_ret, + op_errno, inode, buf, xattr, + postparent); + + } +unlock: + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + if (call_count == 0) { + afr_lookup_done (frame, this); + } + + return 0; +} + +int +afr_lookup_cont_init (afr_local_t *local, unsigned int child_count) +{ + int ret = -ENOMEM; + struct iatt *iatts = NULL; + int32_t *success_children = NULL; + int32_t *sources = NULL; + int32_t **pending_matrix = NULL; + + GF_ASSERT (local); + local->cont.lookup.xattrs = GF_CALLOC (child_count, + sizeof (*local->cont.lookup.xattr), + gf_afr_mt_dict_t); + if (NULL == local->cont.lookup.xattrs) + goto out; + + iatts = GF_CALLOC (child_count, sizeof (*iatts), gf_afr_mt_iatt); + if (NULL == iatts) + goto out; + local->cont.lookup.postparents = iatts; + + iatts = GF_CALLOC (child_count, sizeof (*iatts), gf_afr_mt_iatt); + if (NULL == iatts) + goto out; + local->cont.lookup.bufs = iatts; + + success_children = afr_children_create (child_count); + if (NULL == success_children) + goto out; + local->cont.lookup.success_children = success_children; + + local->fresh_children = afr_children_create (child_count); + if (NULL == local->fresh_children) + goto out; + + sources = GF_CALLOC (sizeof (*sources), child_count, gf_afr_mt_int32_t); + if (NULL == sources) + goto out; + local->cont.lookup.sources = sources; + + pending_matrix = afr_matrix_create (child_count, child_count); + if (NULL == pending_matrix) + goto out; + local->cont.lookup.pending_matrix = pending_matrix; + + ret = 0; +out: + return ret; +} + +int +afr_lookup (call_frame_t *frame, xlator_t *this, + loc_t *loc, dict_t *xattr_req) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + void *gfid_req = NULL; + int ret = -1; + int i = 0; + int call_count = 0; + uint64_t ctx = 0; + int32_t op_errno = 0; + int allow_sh = 0; + priv = this->private; + + AFR_LOCAL_ALLOC_OR_GOTO (local, out); + + local->op_ret = -1; + + frame->local = local; + local->fop = GF_FOP_LOOKUP; + + loc_copy (&local->loc, loc); + ret = loc_path (&local->loc, NULL); + if (ret < 0) { + op_errno = EINVAL; + goto out; + } + + if (local->loc.path && + (strcmp (local->loc.path, "/" GF_REPLICATE_TRASH_DIR) == 0)) { + op_errno = EPERM; + ret = -1; + goto out; + } + + ret = inode_ctx_get (local->loc.inode, this, &ctx); + if (ret == 0) { + /* lookup is a revalidate */ + + local->read_child_index = afr_inode_get_read_ctx (this, + local->loc.inode, + NULL); + } else { + LOCK (&priv->read_child_lock); + { + if (priv->hash_mode) { + local->read_child_index = -1; + } + else { + local->read_child_index = + (++priv->read_child_rr) % + (priv->child_count); + } + } + UNLOCK (&priv->read_child_lock); + local->cont.lookup.fresh_lookup = _gf_true; + } + + local->child_up = memdup (priv->child_up, + sizeof (*local->child_up) * priv->child_count); + if (NULL == local->child_up) { + op_errno = ENOMEM; + goto out; + } + + ret = afr_lookup_cont_init (local, priv->child_count); + if (ret < 0) { + op_errno = -ret; + goto out; + } + + local->call_count = afr_up_children_count (local->child_up, + priv->child_count); + call_count = local->call_count; + if (local->call_count == 0) { + ret = -1; + op_errno = ENOTCONN; + goto out; + } + + /* By default assume ENOTCONN. On success it will be set to 0. */ + local->op_errno = ENOTCONN; + + ret = dict_get_int32 (xattr_req, "allow-sh-for-running-transaction", + &allow_sh); + dict_del (xattr_req, "allow-sh-for-running-transaction"); + local->allow_sh_for_running_transaction = allow_sh; + + ret = afr_lookup_xattr_req_prepare (local, this, xattr_req, &local->loc, + &gfid_req); + if (ret) { + local->op_errno = -ret; + goto out; + } + afr_lookup_save_gfid (local->cont.lookup.gfid_req, gfid_req, + &local->loc); + local->fop = GF_FOP_LOOKUP; + if (priv->choose_local && !priv->did_discovery) { + if (gfid_req && __is_root_gfid(gfid_req)) { + local->do_discovery = _gf_true; + priv->did_discovery = _gf_true; + } + } + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND_COOKIE (frame, afr_lookup_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->lookup, + &local->loc, local->xattr_req); + if (!--call_count) + break; + } + } + + ret = 0; +out: + if (ret) + AFR_STACK_UNWIND (lookup, frame, -1, op_errno, + NULL, NULL, NULL, NULL); + + return 0; +} + + +/* {{{ open */ + +int +__afr_fd_ctx_set (xlator_t *this, fd_t *fd) +{ + afr_private_t * priv = NULL; + int ret = -1; + uint64_t ctx = 0; + afr_fd_ctx_t * fd_ctx = NULL; + + VALIDATE_OR_GOTO (this->private, out); + VALIDATE_OR_GOTO (fd, out); + + priv = this->private; + + ret = __fd_ctx_get (fd, this, &ctx); + + if (ret == 0) + goto out; + + fd_ctx = GF_CALLOC (1, sizeof (afr_fd_ctx_t), + gf_afr_mt_afr_fd_ctx_t); + if (!fd_ctx) { + ret = -ENOMEM; + goto out; + } + + fd_ctx->pre_op_done = GF_CALLOC (sizeof (*fd_ctx->pre_op_done), + priv->child_count, + gf_afr_mt_char); + if (!fd_ctx->pre_op_done) { + ret = -ENOMEM; + goto out; + } + + fd_ctx->pre_op_piggyback = GF_CALLOC (sizeof (*fd_ctx->pre_op_piggyback), + priv->child_count, + gf_afr_mt_char); + if (!fd_ctx->pre_op_piggyback) { + ret = -ENOMEM; + goto out; + } + + fd_ctx->opened_on = GF_CALLOC (sizeof (*fd_ctx->opened_on), + priv->child_count, + gf_afr_mt_int32_t); + if (!fd_ctx->opened_on) { + ret = -ENOMEM; + goto out; + } + + fd_ctx->lock_piggyback = GF_CALLOC (sizeof (*fd_ctx->lock_piggyback), + priv->child_count, + gf_afr_mt_char); + if (!fd_ctx->lock_piggyback) { + ret = -ENOMEM; + goto out; + } + + fd_ctx->lock_acquired = GF_CALLOC (sizeof (*fd_ctx->lock_acquired), + priv->child_count, + gf_afr_mt_char); + if (!fd_ctx->lock_acquired) { + ret = -ENOMEM; + goto out; + } + + fd_ctx->up_count = priv->up_count; + fd_ctx->down_count = priv->down_count; + + fd_ctx->locked_on = GF_CALLOC (sizeof (*fd_ctx->locked_on), + priv->child_count, + gf_afr_mt_char); + if (!fd_ctx->locked_on) { + ret = -ENOMEM; + goto out; + } + + pthread_mutex_init (&fd_ctx->delay_lock, NULL); + INIT_LIST_HEAD (&fd_ctx->entries); + fd_ctx->call_child = -1; + + INIT_LIST_HEAD (&fd_ctx->eager_locked); + + ret = __fd_ctx_set (fd, this, (uint64_t)(long) fd_ctx); + if (ret) + gf_log (this->name, GF_LOG_DEBUG, + "failed to set fd ctx (%p)", fd); +out: + return ret; +} + + +int +afr_fd_ctx_set (xlator_t *this, fd_t *fd) +{ + int ret = -1; + + LOCK (&fd->lock); + { + ret = __afr_fd_ctx_set (this, fd); + } + UNLOCK (&fd->lock); + + return ret; +} + +/* {{{ flush */ + +int +afr_flush_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_local_t * local = NULL; + int call_count = -1; + + local = frame->local; + + LOCK (&frame->lock); + { + if (op_ret != -1) { + if (local->success_count == 0) { + local->op_ret = op_ret; + } + local->success_count++; + } + + local->op_errno = op_errno; + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) + AFR_STACK_UNWIND(flush, frame, local->op_ret, + local->op_errno, NULL); + + return 0; +} + +static int +afr_flush_wrapper (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata) +{ + int i = 0; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + + priv = this->private; + local = frame->local; + call_count = local->call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND_COOKIE (frame, afr_flush_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->flush, + local->fd, NULL); + if (!--call_count) + break; + + } + } + + return 0; +} + +int +afr_flush (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + call_stub_t *stub = NULL; + int ret = -1; + int op_errno = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init(local, priv, &op_errno); + if (ret < 0) + goto out; + + local->fd = fd_ref(fd); + stub = fop_flush_stub (frame, afr_flush_wrapper, fd, xdata); + if (!stub) { + ret = -1; + op_errno = ENOMEM; + goto out; + } + + afr_delayed_changelog_wake_resume (this, fd, stub); + ret = 0; + +out: + if (ret < 0) + AFR_STACK_UNWIND(flush, frame, -1, op_errno, NULL); + + return 0; +} + +/* }}} */ + + +int +afr_cleanup_fd_ctx (xlator_t *this, fd_t *fd) +{ + uint64_t ctx = 0; + afr_fd_ctx_t *fd_ctx = NULL; + int ret = 0; + + ret = fd_ctx_get (fd, this, &ctx); + if (ret < 0) + goto out; + + fd_ctx = (afr_fd_ctx_t *)(long) ctx; + + if (fd_ctx) { + GF_FREE (fd_ctx->pre_op_done); + + GF_FREE (fd_ctx->opened_on); + + GF_FREE (fd_ctx->locked_on); + + GF_FREE (fd_ctx->pre_op_piggyback); + GF_FREE (fd_ctx->lock_piggyback); + + GF_FREE (fd_ctx->lock_acquired); + + pthread_mutex_destroy (&fd_ctx->delay_lock); + + GF_FREE (fd_ctx); + } + +out: + return 0; +} + + +int +afr_release (xlator_t *this, fd_t *fd) +{ + afr_locked_fd_t *locked_fd = NULL; + afr_locked_fd_t *tmp = NULL; + afr_private_t *priv = NULL; + + priv = this->private; + + afr_cleanup_fd_ctx (this, fd); + + list_for_each_entry_safe (locked_fd, tmp, &priv->saved_fds, + list) { + + if (locked_fd->fd == fd) { + list_del_init (&locked_fd->list); + GF_FREE (locked_fd); + } + + } + + return 0; +} + + +/* {{{ fsync */ + +int +afr_fsync_unwind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + AFR_STACK_UNWIND (fsync, frame, op_ret, op_errno, prebuf, postbuf, + xdata); + return 0; +} + +int +afr_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + afr_local_t *local = NULL; + int call_count = -1; + int child_index = (long) cookie; + int read_child = 0; + call_stub_t *stub = NULL; + + local = frame->local; + + read_child = afr_inode_get_read_ctx (this, local->fd->inode, NULL); + + LOCK (&frame->lock); + { + if (child_index == read_child) { + local->read_child_returned = _gf_true; + } + + if (op_ret == 0) { + local->op_ret = 0; + + if (local->success_count == 0) { + local->cont.inode_wfop.prebuf = *prebuf; + local->cont.inode_wfop.postbuf = *postbuf; + } + + if (child_index == read_child) { + local->cont.inode_wfop.prebuf = *prebuf; + local->cont.inode_wfop.postbuf = *postbuf; + } + + local->success_count++; + } + + local->op_errno = op_errno; + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) { + /* Make a stub out of the frame, and register it + with the waking up post-op. When the call-stub resumes, + we are guaranteed that there was no post-op pending + (i.e changelogs were unset in the server). This is an + essential "guarantee", that fsync() returns only after + completely finishing EVERYTHING, including the delayed + post-op. This guarantee is expected by FUSE graph switching + for example. + */ + stub = fop_fsync_cbk_stub (frame, afr_fsync_unwind_cbk, + local->op_ret, local->op_errno, + &local->cont.inode_wfop.prebuf, + &local->cont.inode_wfop.postbuf, + xdata); + if (!stub) { + AFR_STACK_UNWIND (fsync, frame, -1, ENOMEM, 0, 0, 0); + return 0; + } + + /* If no new unstable writes happened between the + time we cleared the unstable write witness flag in afr_fsync + and now, calling afr_delayed_changelog_wake_up() should + wake up and skip over the fsync phase and go straight to + afr_changelog_post_op_now() + */ + afr_delayed_changelog_wake_resume (this, local->fd, stub); + } + + return 0; +} + + +int +afr_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, + int32_t datasync, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int ret = -1; + int i = 0; + int32_t call_count = 0; + int32_t op_errno = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + call_count = local->call_count; + + local->fd = fd_ref (fd); + + if (afr_fd_has_witnessed_unstable_write (this, fd)) { + /* don't care. we only wanted to CLEAR the bit */ + } + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND_COOKIE (frame, afr_fsync_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fsync, + fd, datasync, xdata); + if (!--call_count) + break; + } + } + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (fsync, frame, -1, op_errno, NULL, NULL, NULL); + return 0; +} + +/* }}} */ + +/* {{{ fsync */ + +int32_t +afr_fsyncdir_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *xdata) +{ + afr_local_t *local = NULL; + int call_count = -1; + + local = frame->local; + + LOCK (&frame->lock); + { + if (op_ret == 0) + local->op_ret = 0; + + local->op_errno = op_errno; + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) + AFR_STACK_UNWIND (fsyncdir, frame, local->op_ret, + local->op_errno, xdata); + + return 0; +} + + +int32_t +afr_fsyncdir (call_frame_t *frame, xlator_t *this, fd_t *fd, + int32_t datasync, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int ret = -1; + int i = 0; + int32_t call_count = 0; + int32_t op_errno = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + call_count = local->call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND (frame, afr_fsyncdir_cbk, + priv->children[i], + priv->children[i]->fops->fsyncdir, + fd, datasync, xdata); + if (!--call_count) + break; + } + } + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (fsyncdir, frame, -1, op_errno, NULL); + return 0; +} + +/* }}} */ + +/* {{{ xattrop */ + +int32_t +afr_xattrop_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *xattr, dict_t *xdata) +{ + afr_local_t *local = NULL; + int call_count = -1; + + local = frame->local; + + LOCK (&frame->lock); + { + if (op_ret == 0) { + if (!local->cont.xattrop.xattr) + local->cont.xattrop.xattr = dict_ref (xattr); + local->op_ret = 0; + } + + local->op_errno = op_errno; + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) + AFR_STACK_UNWIND (xattrop, frame, local->op_ret, local->op_errno, + local->cont.xattrop.xattr, xdata); + + return 0; +} + + +int32_t +afr_xattrop (call_frame_t *frame, xlator_t *this, loc_t *loc, + gf_xattrop_flags_t optype, dict_t *xattr, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int ret = -1; + int i = 0; + int32_t call_count = 0; + int32_t op_errno = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + call_count = local->call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND (frame, afr_xattrop_cbk, + priv->children[i], + priv->children[i]->fops->xattrop, + loc, optype, xattr, xdata); + if (!--call_count) + break; + } + } + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (xattrop, frame, -1, op_errno, NULL, NULL); + return 0; +} + +/* }}} */ + +/* {{{ fxattrop */ + +int32_t +afr_fxattrop_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *xattr, dict_t *xdata) +{ + afr_local_t *local = NULL; + + int call_count = -1; + + local = frame->local; + + LOCK (&frame->lock); + { + if (op_ret == 0) { + if (!local->cont.fxattrop.xattr) + local->cont.fxattrop.xattr = dict_ref (xattr); + + local->op_ret = 0; + } + + local->op_errno = op_errno; + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) + AFR_STACK_UNWIND (fxattrop, frame, local->op_ret, local->op_errno, + local->cont.fxattrop.xattr, xdata); + + return 0; +} + + +int32_t +afr_fxattrop (call_frame_t *frame, xlator_t *this, fd_t *fd, + gf_xattrop_flags_t optype, dict_t *xattr, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int ret = -1; + int i = 0; + int32_t call_count = 0; + int32_t op_errno = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + call_count = local->call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND (frame, afr_fxattrop_cbk, + priv->children[i], + priv->children[i]->fops->fxattrop, + fd, optype, xattr, xdata); + if (!--call_count) + break; + } + } + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (fxattrop, frame, -1, op_errno, NULL, NULL); + return 0; +} + +/* }}} */ + + +int32_t +afr_inodelk_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *xdata) + +{ + afr_local_t *local = NULL; + int call_count = -1; + + local = frame->local; + + LOCK (&frame->lock); + { + if (op_ret == 0) + local->op_ret = 0; + + local->op_errno = op_errno; + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) + AFR_STACK_UNWIND (inodelk, frame, local->op_ret, + local->op_errno, xdata); + + return 0; +} + + +int32_t +afr_inodelk (call_frame_t *frame, xlator_t *this, + const char *volume, loc_t *loc, int32_t cmd, + struct gf_flock *flock, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int ret = -1; + int i = 0; + int32_t call_count = 0; + int32_t op_errno = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + call_count = local->call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND (frame, afr_inodelk_cbk, + priv->children[i], + priv->children[i]->fops->inodelk, + volume, loc, cmd, flock, xdata); + + if (!--call_count) + break; + } + } + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (inodelk, frame, -1, op_errno, NULL); + return 0; +} + + +int32_t +afr_finodelk_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *xdata) + +{ + afr_local_t *local = NULL; + int call_count = -1; + + local = frame->local; + + LOCK (&frame->lock); + { + if (op_ret == 0) + local->op_ret = 0; + + local->op_errno = op_errno; + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) + AFR_STACK_UNWIND (finodelk, frame, local->op_ret, + local->op_errno, xdata); + + return 0; +} + + +int32_t +afr_finodelk (call_frame_t *frame, xlator_t *this, + const char *volume, fd_t *fd, int32_t cmd, struct gf_flock *flock, + dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int ret = -1; + int i = 0; + int32_t call_count = 0; + int32_t op_errno = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + call_count = local->call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND (frame, afr_finodelk_cbk, + priv->children[i], + priv->children[i]->fops->finodelk, + volume, fd, cmd, flock, xdata); + + if (!--call_count) + break; + } + } + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (finodelk, frame, -1, op_errno, NULL); + return 0; +} + + +int32_t +afr_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_local_t *local = NULL; + int call_count = -1; + + local = frame->local; + + LOCK (&frame->lock); + { + if (op_ret == 0) + local->op_ret = 0; + + local->op_errno = op_errno; + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) + AFR_STACK_UNWIND (entrylk, frame, local->op_ret, + local->op_errno, xdata); + + return 0; +} + + +int32_t +afr_entrylk (call_frame_t *frame, xlator_t *this, + const char *volume, loc_t *loc, + const char *basename, entrylk_cmd cmd, entrylk_type type, + dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int ret = -1; + int i = 0; + int32_t call_count = 0; + int32_t op_errno = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + call_count = local->call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND (frame, afr_entrylk_cbk, + priv->children[i], + priv->children[i]->fops->entrylk, + volume, loc, basename, cmd, type, xdata); + + if (!--call_count) + break; + } + } + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (entrylk, frame, -1, op_errno, NULL); + return 0; +} + + + +int32_t +afr_fentrylk_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *xdata) + +{ + afr_local_t *local = NULL; + int call_count = -1; + + local = frame->local; + + LOCK (&frame->lock); + { + if (op_ret == 0) + local->op_ret = 0; + + local->op_errno = op_errno; + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) + AFR_STACK_UNWIND (fentrylk, frame, local->op_ret, + local->op_errno, xdata); + + return 0; +} + + +int32_t +afr_fentrylk (call_frame_t *frame, xlator_t *this, + const char *volume, fd_t *fd, + const char *basename, entrylk_cmd cmd, + entrylk_type type, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int ret = -1; + int i = 0; + int32_t call_count = 0; + int32_t op_errno = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + call_count = local->call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND (frame, afr_fentrylk_cbk, + priv->children[i], + priv->children[i]->fops->fentrylk, + volume, fd, basename, cmd, type, xdata); + + if (!--call_count) + break; + } + } + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (fentrylk, frame, -1, op_errno, NULL); + return 0; +} + +int32_t +afr_statfs_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + struct statvfs *statvfs, dict_t *xdata) +{ + afr_local_t *local = NULL; + int call_count = 0; + + LOCK (&frame->lock); + { + local = frame->local; + + if (op_ret == 0) { + local->op_ret = op_ret; + + if (local->cont.statfs.buf_set) { + if (statvfs->f_bavail < local->cont.statfs.buf.f_bavail) + local->cont.statfs.buf = *statvfs; + } else { + local->cont.statfs.buf = *statvfs; + local->cont.statfs.buf_set = 1; + } + } + + if (op_ret == -1) + local->op_errno = op_errno; + + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) + AFR_STACK_UNWIND (statfs, frame, local->op_ret, local->op_errno, + &local->cont.statfs.buf, xdata); + + return 0; +} + + +int32_t +afr_statfs (call_frame_t *frame, xlator_t *this, + loc_t *loc, dict_t *xdata) +{ + afr_private_t * priv = NULL; + int child_count = 0; + afr_local_t * local = NULL; + int i = 0; + int ret = -1; + int call_count = 0; + int32_t op_errno = 0; + + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + VALIDATE_OR_GOTO (loc, out); + + priv = this->private; + child_count = priv->child_count; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + call_count = local->call_count; + + for (i = 0; i < child_count; i++) { + if (local->child_up[i]) { + STACK_WIND (frame, afr_statfs_cbk, + priv->children[i], + priv->children[i]->fops->statfs, + loc, xdata); + if (!--call_count) + break; + } + } + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (statfs, frame, -1, op_errno, NULL, NULL); + return 0; +} + + +int32_t +afr_lk_unlock_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct gf_flock *lock, + dict_t *xdata) +{ + afr_local_t * local = NULL; + int call_count = -1; + + local = frame->local; + call_count = afr_frame_return (frame); + + if (call_count == 0) + AFR_STACK_UNWIND (lk, frame, local->op_ret, local->op_errno, + lock, xdata); + + return 0; +} + + +int32_t +afr_lk_unlock (call_frame_t *frame, xlator_t *this) +{ + afr_local_t * local = NULL; + afr_private_t * priv = NULL; + int i = 0; + int call_count = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_locked_nodes_count (local->cont.lk.locked_nodes, + priv->child_count); + + if (call_count == 0) { + AFR_STACK_UNWIND (lk, frame, local->op_ret, local->op_errno, + &local->cont.lk.ret_flock, NULL); + return 0; + } + + local->call_count = call_count; + + local->cont.lk.user_flock.l_type = F_UNLCK; + + for (i = 0; i < priv->child_count; i++) { + if (local->cont.lk.locked_nodes[i]) { + STACK_WIND (frame, afr_lk_unlock_cbk, + priv->children[i], + priv->children[i]->fops->lk, + local->fd, F_SETLK, + &local->cont.lk.user_flock, NULL); + + if (!--call_count) + break; + } + } + + return 0; +} + + +int32_t +afr_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct gf_flock *lock, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int child_index = -1; +/* int ret = 0; */ + + + local = frame->local; + priv = this->private; + + child_index = (long) cookie; + + if (!child_went_down (op_ret, op_errno) && (op_ret == -1)) { + local->op_ret = -1; + local->op_errno = op_errno; + + afr_lk_unlock (frame, this); + return 0; + } + + if (op_ret == 0) { + local->op_ret = 0; + local->op_errno = 0; + local->cont.lk.locked_nodes[child_index] = 1; + local->cont.lk.ret_flock = *lock; + } + + child_index++; + + if (child_index < priv->child_count) { + STACK_WIND_COOKIE (frame, afr_lk_cbk, (void *) (long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->lk, + local->fd, local->cont.lk.cmd, + &local->cont.lk.user_flock, xdata); + } else if (local->op_ret == -1) { + /* all nodes have gone down */ + + AFR_STACK_UNWIND (lk, frame, -1, ENOTCONN, + &local->cont.lk.ret_flock, NULL); + } else { + /* locking has succeeded on all nodes that are up */ + + /* temporarily + ret = afr_mark_locked_nodes (this, local->fd, + local->cont.lk.locked_nodes); + if (ret) + gf_log (this->name, GF_LOG_DEBUG, + "Could not save locked nodes info in fdctx"); + + ret = afr_save_locked_fd (this, local->fd); + if (ret) + gf_log (this->name, GF_LOG_DEBUG, + "Could not save locked fd"); + + */ + AFR_STACK_UNWIND (lk, frame, local->op_ret, local->op_errno, + &local->cont.lk.ret_flock, NULL); + } + + return 0; +} + + +int +afr_lk (call_frame_t *frame, xlator_t *this, + fd_t *fd, int32_t cmd, struct gf_flock *flock, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int i = 0; + int32_t op_errno = 0; + int ret = -1; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + local->cont.lk.locked_nodes = GF_CALLOC (priv->child_count, + sizeof (*local->cont.lk.locked_nodes), + gf_afr_mt_char); + + if (!local->cont.lk.locked_nodes) { + op_errno = ENOMEM; + goto out; + } + + local->fd = fd_ref (fd); + local->cont.lk.cmd = cmd; + local->cont.lk.user_flock = *flock; + local->cont.lk.ret_flock = *flock; + + STACK_WIND_COOKIE (frame, afr_lk_cbk, (void *) (long) 0, + priv->children[i], + priv->children[i]->fops->lk, + fd, cmd, flock, xdata); + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (lk, frame, -1, op_errno, NULL, NULL); + return 0; +} + +int +afr_forget (xlator_t *this, inode_t *inode) +{ + uint64_t ctx_addr = 0; + afr_inode_ctx_t *ctx = NULL; + + inode_ctx_get (inode, this, &ctx_addr); + + if (!ctx_addr) + goto out; + + ctx = (afr_inode_ctx_t *)(long)ctx_addr; + GF_FREE (ctx->fresh_children); + GF_FREE (ctx); +out: + return 0; +} + +int +afr_priv_dump (xlator_t *this) +{ + afr_private_t *priv = NULL; + char key_prefix[GF_DUMP_MAX_BUF_LEN]; + char key[GF_DUMP_MAX_BUF_LEN]; + int i = 0; + + + GF_ASSERT (this); + priv = this->private; + + GF_ASSERT (priv); + snprintf(key_prefix, GF_DUMP_MAX_BUF_LEN, "%s.%s", this->type, this->name); + gf_proc_dump_add_section(key_prefix); + gf_proc_dump_write("child_count", "%u", priv->child_count); + gf_proc_dump_write("read_child_rr", "%u", priv->read_child_rr); + for (i = 0; i < priv->child_count; i++) { + sprintf (key, "child_up[%d]", i); + gf_proc_dump_write(key, "%d", priv->child_up[i]); + sprintf (key, "pending_key[%d]", i); + gf_proc_dump_write(key, "%s", priv->pending_key[i]); + } + gf_proc_dump_write("data_self_heal", "%s", priv->data_self_heal); + gf_proc_dump_write("metadata_self_heal", "%d", priv->metadata_self_heal); + gf_proc_dump_write("entry_self_heal", "%d", priv->entry_self_heal); + gf_proc_dump_write("data_change_log", "%d", priv->data_change_log); + gf_proc_dump_write("metadata_change_log", "%d", priv->metadata_change_log); + gf_proc_dump_write("entry-change_log", "%d", priv->entry_change_log); + gf_proc_dump_write("read_child", "%d", priv->read_child); + gf_proc_dump_write("favorite_child", "%d", priv->favorite_child); + gf_proc_dump_write("wait_count", "%u", priv->wait_count); + + return 0; +} + + +/** + * find_child_index - find the child's index in the array of subvolumes + * @this: AFR + * @child: child + */ + +static int +find_child_index (xlator_t *this, xlator_t *child) +{ + afr_private_t *priv = NULL; + int i = -1; + + priv = this->private; + + for (i = 0; i < priv->child_count; i++) { + if ((xlator_t *) child == priv->children[i]) + break; + } + + return i; +} + +int32_t +afr_notify (xlator_t *this, int32_t event, + void *data, void *data2) +{ + afr_private_t *priv = NULL; + int i = -1; + int up_children = 0; + int down_children = 0; + int propagate = 0; + int had_heard_from_all = 0; + int have_heard_from_all = 0; + int idx = -1; + int ret = -1; + int call_psh = 0; + int up_child = AFR_ALL_CHILDREN; + dict_t *input = NULL; + dict_t *output = NULL; + + priv = this->private; + + if (!priv) + return 0; + + /* + * We need to reset this in case children come up in "staggered" + * fashion, so that we discover a late-arriving local subvolume. Note + * that we could end up issuing N lookups to the first subvolume, and + * O(N^2) overall, but N is small for AFR so it shouldn't be an issue. + */ + priv->did_discovery = _gf_false; + + had_heard_from_all = 1; + for (i = 0; i < priv->child_count; i++) { + if (!priv->last_event[i]) { + had_heard_from_all = 0; + } + } + + /* parent xlators dont need to know about every child_up, child_down + * because of afr ha. If all subvolumes go down, child_down has + * to be triggered. In that state when 1 subvolume comes up child_up + * needs to be triggered. dht optimizes revalidate lookup by sending + * it only to one of its subvolumes. When child up/down happens + * for afr's subvolumes dht should be notified by child_modified. The + * subsequent revalidate lookup happens on all the dht's subvolumes + * which triggers afr self-heals if any. + */ + idx = find_child_index (this, data); + if (idx < 0) { + gf_log (this->name, GF_LOG_ERROR, "Received child_up " + "from invalid subvolume"); + goto out; + } + + switch (event) { + case GF_EVENT_CHILD_UP: + LOCK (&priv->lock); + { + /* + * This only really counts if the child was never up + * (value = -1) or had been down (value = 0). See + * comment at GF_EVENT_CHILD_DOWN for a more detailed + * explanation. + */ + if (priv->child_up[idx] != 1) { + priv->up_count++; + } + priv->child_up[idx] = 1; + + call_psh = 1; + up_child = idx; + for (i = 0; i < priv->child_count; i++) + if (priv->child_up[i] == 1) + up_children++; + if (up_children == 1) { + gf_log (this->name, GF_LOG_INFO, + "Subvolume '%s' came back up; " + "going online.", ((xlator_t *)data)->name); + } else { + event = GF_EVENT_CHILD_MODIFIED; + } + + priv->last_event[idx] = event; + } + UNLOCK (&priv->lock); + + break; + + case GF_EVENT_CHILD_DOWN: + LOCK (&priv->lock); + { + /* + * If a brick is down when we start, we'll get a + * CHILD_DOWN to indicate its initial state. There + * was never a CHILD_UP in this case, so if we + * increment "down_count" the difference between than + * and "up_count" will no longer be the number of + * children that are currently up. This has serious + * implications e.g. for quorum enforcement, so we + * don't increment these values unless the event + * represents an actual state transition between "up" + * (value = 1) and anything else. + */ + if (priv->child_up[idx] == 1) { + priv->down_count++; + } + priv->child_up[idx] = 0; + + for (i = 0; i < priv->child_count; i++) + if (priv->child_up[i] == 0) + down_children++; + if (down_children == priv->child_count) { + gf_log (this->name, GF_LOG_ERROR, + "All subvolumes are down. Going offline " + "until atleast one of them comes back up."); + } else { + event = GF_EVENT_CHILD_MODIFIED; + } + + priv->last_event[idx] = event; + } + UNLOCK (&priv->lock); + + break; + + case GF_EVENT_CHILD_CONNECTING: + LOCK (&priv->lock); + { + priv->last_event[idx] = event; + } + UNLOCK (&priv->lock); + + break; + + case GF_EVENT_TRANSLATOR_OP: + input = data; + output = data2; + ret = afr_xl_op (this, input, output); + goto out; + break; + + default: + propagate = 1; + break; + } + + /* have all subvolumes reported status once by now? */ + have_heard_from_all = 1; + for (i = 0; i < priv->child_count; i++) { + if (!priv->last_event[i]) + have_heard_from_all = 0; + } + + /* if all subvols have reported status, no need to hide anything + or wait for anything else. Just propagate blindly */ + if (have_heard_from_all) + propagate = 1; + + if (!had_heard_from_all && have_heard_from_all) { + /* This is the first event which completes aggregation + of events from all subvolumes. If at least one subvol + had come up, propagate CHILD_UP, but only this time + */ + event = GF_EVENT_CHILD_DOWN; + + LOCK (&priv->lock); + { + up_children = afr_up_children_count (priv->child_up, + priv->child_count); + for (i = 0; i < priv->child_count; i++) { + if (priv->last_event[i] == GF_EVENT_CHILD_UP) { + event = GF_EVENT_CHILD_UP; + break; + } + + if (priv->last_event[i] == + GF_EVENT_CHILD_CONNECTING) { + event = GF_EVENT_CHILD_CONNECTING; + /* continue to check other events for CHILD_UP */ + } + } + } + UNLOCK (&priv->lock); + } + + ret = 0; + if (propagate) + ret = default_notify (this, event, data); + if (call_psh && priv->shd.iamshd) + afr_proactive_self_heal ((void*) (long) up_child); + +out: + return ret; +} + +int +afr_first_up_child (unsigned char *child_up, size_t child_count) +{ + int ret = -1; + int i = 0; + + GF_ASSERT (child_up); + + for (i = 0; i < child_count; i++) { + if (child_up[i]) { + ret = i; + break; + } + } + + return ret; +} + +int +afr_local_init (afr_local_t *local, afr_private_t *priv, int32_t *op_errno) +{ + int ret = -1; + + local->op_ret = -1; + local->op_errno = EUCLEAN; + + local->child_up = GF_CALLOC (priv->child_count, + sizeof (*local->child_up), + gf_afr_mt_char); + if (!local->child_up) { + if (op_errno) + *op_errno = ENOMEM; + goto out; + } + + memcpy (local->child_up, priv->child_up, + sizeof (*local->child_up) * priv->child_count); + local->call_count = afr_up_children_count (local->child_up, + priv->child_count); + if (local->call_count == 0) { + gf_log (THIS->name, GF_LOG_INFO, "no subvolumes up"); + if (op_errno) + *op_errno = ENOTCONN; + goto out; + } + + local->child_errno = GF_CALLOC (priv->child_count, + sizeof (*local->child_errno), + gf_afr_mt_int32_t); + if (!local->child_errno) { + if (op_errno) + *op_errno = ENOMEM; + goto out; + } + + local->transaction.postop_piggybacked = GF_CALLOC (priv->child_count, + sizeof (int), + gf_afr_mt_int32_t); + if (!local->transaction.postop_piggybacked) { + if (op_errno) + *op_errno = ENOMEM; + goto out; + } + + local->append_write = _gf_false; + + ret = 0; +out: + return ret; +} + +int +afr_internal_lock_init (afr_internal_lock_t *lk, size_t child_count, + transaction_lk_type_t lk_type) +{ + int ret = -ENOMEM; + + lk->locked_nodes = GF_CALLOC (sizeof (*lk->locked_nodes), + child_count, gf_afr_mt_char); + if (NULL == lk->locked_nodes) + goto out; + + lk->lower_locked_nodes = GF_CALLOC (sizeof (*lk->lower_locked_nodes), + child_count, gf_afr_mt_char); + if (NULL == lk->lower_locked_nodes) + goto out; + + lk->lock_op_ret = -1; + lk->lock_op_errno = EUCLEAN; + lk->transaction_lk_type = lk_type; + + ret = 0; +out: + return ret; +} + +void +afr_matrix_cleanup (int32_t **matrix, unsigned int m) +{ + int i = 0; + + if (!matrix) + goto out; + for (i = 0; i < m; i++) { + GF_FREE (matrix[i]); + } + + GF_FREE (matrix); +out: + return; +} + +int32_t** +afr_matrix_create (unsigned int m, unsigned int n) +{ + int32_t **matrix = NULL; + int i = 0; + + matrix = GF_CALLOC (sizeof (*matrix), m, gf_afr_mt_int32_t); + if (!matrix) + goto out; + + for (i = 0; i < m; i++) { + matrix[i] = GF_CALLOC (sizeof (*matrix[i]), n, + gf_afr_mt_int32_t); + if (!matrix[i]) + goto out; + } + return matrix; +out: + afr_matrix_cleanup (matrix, m); + return NULL; +} + +int +afr_inodelk_init (afr_inodelk_t *lk, char *dom, size_t child_count) +{ + int ret = -ENOMEM; + + lk->domain = dom; + lk->locked_nodes = GF_CALLOC (sizeof (*lk->locked_nodes), + child_count, gf_afr_mt_char); + if (NULL == lk->locked_nodes) + goto out; + ret = 0; +out: + return ret; +} + +int +afr_transaction_local_init (afr_local_t *local, xlator_t *this) +{ + int child_up_count = 0; + int ret = -ENOMEM; + afr_private_t *priv = NULL; + + priv = this->private; + ret = afr_internal_lock_init (&local->internal_lock, priv->child_count, + AFR_TRANSACTION_LK); + if (ret < 0) + goto out; + + if ((local->transaction.type == AFR_DATA_TRANSACTION) || + (local->transaction.type == AFR_METADATA_TRANSACTION)) { + ret = afr_inodelk_init (&local->internal_lock.inodelk[0], + this->name, priv->child_count); + if (ret < 0) + goto out; + } + + ret = -ENOMEM; + child_up_count = afr_up_children_count (local->child_up, + priv->child_count); + if (priv->optimistic_change_log && child_up_count == priv->child_count) + local->optimistic_change_log = 1; + + local->first_up_child = afr_first_up_child (local->child_up, + priv->child_count); + + local->transaction.eager_lock = + GF_CALLOC (sizeof (*local->transaction.eager_lock), + priv->child_count, + gf_afr_mt_int32_t); + + if (!local->transaction.eager_lock) + goto out; + + local->fresh_children = afr_children_create (priv->child_count); + if (!local->fresh_children) + goto out; + + local->transaction.pre_op = GF_CALLOC (sizeof (*local->transaction.pre_op), + priv->child_count, + gf_afr_mt_char); + if (!local->transaction.pre_op) + goto out; + + local->pending = afr_matrix_create (priv->child_count, + AFR_NUM_CHANGE_LOGS); + if (!local->pending) + goto out; + + local->transaction.txn_changelog = afr_matrix_create (priv->child_count, + AFR_NUM_CHANGE_LOGS); + if (!local->transaction.txn_changelog) + goto out; + + INIT_LIST_HEAD (&local->transaction.eager_locked); + + ret = 0; +out: + return ret; +} + +void +afr_reset_children (int32_t *fresh_children, int32_t child_count) +{ + unsigned int i = 0; + for (i = 0; i < child_count; i++) + fresh_children[i] = -1; +} + +int32_t* +afr_children_create (int32_t child_count) +{ + int32_t *children = NULL; + int i = 0; + + GF_ASSERT (child_count > 0); + + children = GF_CALLOC (child_count, sizeof (*children), + gf_afr_mt_int32_t); + if (NULL == children) + goto out; + for (i = 0; i < child_count; i++) + children[i] = -1; +out: + return children; +} + +void +afr_children_add_child (int32_t *children, int32_t child, + int32_t child_count) +{ + gf_boolean_t child_found = _gf_false; + int i = 0; + + for (i = 0; i < child_count; i++) { + if (children[i] == -1) + break; + if (children[i] == child) { + child_found = _gf_true; + break; + } + } + + if (!child_found) { + GF_ASSERT (i < child_count); + children[i] = child; + } +} + +void +afr_children_rm_child (int32_t *children, int32_t child, int32_t child_count) +{ + int i = 0; + + GF_ASSERT ((child >= 0) && (child < child_count)); + for (i = 0; i < child_count; i++) { + if (children[i] == -1) + break; + if (children[i] == child) { + if (i != (child_count - 1)) + memmove (children + i, children + i + 1, + sizeof (*children)*(child_count - i - 1)); + children[child_count - 1] = -1; + break; + } + } +} + +int +afr_get_children_count (int32_t *children, unsigned int child_count) +{ + int count = 0; + int i = 0; + + for (i = 0; i < child_count; i++) { + if (children[i] == -1) + break; + count++; + } + return count; +} + +void +afr_set_low_priority (call_frame_t *frame) +{ + frame->root->pid = LOW_PRIO_PROC_PID; +} + +int +afr_child_fd_ctx_set (xlator_t *this, fd_t *fd, int32_t child, + int flags) +{ + int ret = 0; + uint64_t ctx = 0; + afr_fd_ctx_t *fd_ctx = NULL; + + GF_ASSERT (fd && fd->inode); + ret = afr_fd_ctx_set (this, fd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "could not set fd ctx for fd=%p", fd); + goto out; + } + + ret = fd_ctx_get (fd, this, &ctx); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "could not get fd ctx for fd=%p", fd); + goto out; + } + + fd_ctx = (afr_fd_ctx_t *)(long) ctx; + fd_ctx->opened_on[child] = AFR_FD_OPENED; + if (!IA_ISDIR (fd->inode->ia_type)) { + fd_ctx->flags = flags; + } + ret = 0; +out: + return ret; +} + +gf_boolean_t +afr_have_quorum (char *logname, afr_private_t *priv) +{ + unsigned int quorum = 0; + + GF_VALIDATE_OR_GOTO(logname,priv,out); + + quorum = priv->quorum_count; + if (quorum != AFR_QUORUM_AUTO) { + return (priv->up_count >= (priv->down_count + quorum)); + } + + quorum = priv->child_count / 2 + 1; + if (priv->up_count >= (priv->down_count + quorum)) { + return _gf_true; + } + + /* + * Special case for even numbers of nodes: if we have exactly half + * and that includes the first ("senior-most") node, then that counts + * as quorum even if it wouldn't otherwise. This supports e.g. N=2 + * while preserving the critical property that there can only be one + * such group. + */ + if ((priv->child_count % 2) == 0) { + quorum = priv->child_count / 2; + if (priv->up_count >= (priv->down_count + quorum)) { + if (priv->child_up[0]) { + return _gf_true; + } + } + } + +out: + return _gf_false; +} + +void +afr_priv_destroy (afr_private_t *priv) +{ + int i = 0; + + if (!priv) + goto out; + inode_unref (priv->root_inode); + GF_FREE (priv->shd.pos); + GF_FREE (priv->shd.pending); + GF_FREE (priv->shd.inprogress); +// for (i = 0; i < priv->child_count; i++) +// if (priv->shd.timer && priv->shd.timer[i]) +// gf_timer_call_cancel (this->ctx, priv->shd.timer[i]); + GF_FREE (priv->shd.timer); + + if (priv->shd.healed) + eh_destroy (priv->shd.healed); + + if (priv->shd.heal_failed) + eh_destroy (priv->shd.heal_failed); + + if (priv->shd.split_brain) + eh_destroy (priv->shd.split_brain); + + for (i = 0; i < priv->child_count; i++) + { + if (priv->shd.statistics[i]) + eh_destroy (priv->shd.statistics[i]); + } + + GF_FREE (priv->shd.statistics); + + GF_FREE (priv->shd.crawl_events); + + GF_FREE (priv->last_event); + if (priv->pending_key) { + for (i = 0; i < priv->child_count; i++) + GF_FREE (priv->pending_key[i]); + } + GF_FREE (priv->pending_key); + GF_FREE (priv->children); + GF_FREE (priv->child_up); + LOCK_DESTROY (&priv->lock); + LOCK_DESTROY (&priv->read_child_lock); + pthread_mutex_destroy (&priv->mutex); + GF_FREE (priv); +out: + return; +} + +int +xlator_subvolume_count (xlator_t *this) +{ + int i = 0; + xlator_list_t *list = NULL; + + for (list = this->children; list; list = list->next) + i++; + return i; +} + +inline gf_boolean_t +afr_is_errno_set (int *child_errno, int child) +{ + return child_errno[child]; +} + +inline gf_boolean_t +afr_is_errno_unset (int *child_errno, int child) +{ + return !afr_is_errno_set (child_errno, child); +} + +void +afr_prepare_new_entry_pending_matrix (int32_t **pending, + gf_boolean_t (*is_pending) (int *, int), + int *ctx, struct iatt *buf, + unsigned int child_count) +{ + int midx = 0; + int idx = 0; + int i = 0; + + midx = afr_index_for_transaction_type (AFR_METADATA_TRANSACTION); + if (IA_ISDIR (buf->ia_type)) + idx = afr_index_for_transaction_type (AFR_ENTRY_TRANSACTION); + else if (IA_ISREG (buf->ia_type)) + idx = afr_index_for_transaction_type (AFR_DATA_TRANSACTION); + else + idx = -1; + for (i = 0; i < child_count; i++) { + if (is_pending (ctx, i)) { + pending[i][midx] = hton32 (1); + if (idx == -1) + continue; + pending[i][idx] = hton32 (1); + } + } +} + +gf_boolean_t +afr_is_fd_fixable (fd_t *fd) +{ + if (!fd || !fd->inode) + return _gf_false; + else if (fd_is_anonymous (fd)) + return _gf_false; + else if (uuid_is_null (fd->inode->gfid)) + return _gf_false; + + return _gf_true; +} + +void +afr_handle_open_fd_count (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + inode_t *inode = NULL; + afr_inode_ctx_t *ctx = NULL; + + local = frame->local; + + if (local->fd) + inode = local->fd->inode; + else + inode = local->loc.inode; + + if (!inode) + return; + + LOCK (&inode->lock); + { + ctx = __afr_inode_ctx_get (inode, this); + ctx->open_fd_count = local->open_fd_count; + } + UNLOCK (&inode->lock); +} + +int +afr_initialise_statistics (xlator_t *this) +{ + afr_private_t *priv = NULL; + int ret = -1; + int i = 0; + int child_count = 0; + eh_t *stats_per_brick = NULL; + shd_crawl_event_t ***shd_crawl_events = NULL; + priv = this->private; + + priv->shd.statistics = GF_CALLOC (sizeof(eh_t *), priv->child_count, + gf_common_mt_eh_t); + if (!priv->shd.statistics) { + ret = -1; + goto out; + } + child_count = priv->child_count; + for (i=0; i < child_count ; i++) { + stats_per_brick = eh_new (AFR_STATISTICS_HISTORY_SIZE, + _gf_false, + _destroy_crawl_event_data); + if (!stats_per_brick) { + ret = -1; + goto out; + } + priv->shd.statistics[i] = stats_per_brick; + + } + + shd_crawl_events = (shd_crawl_event_t***)(&priv->shd.crawl_events); + *shd_crawl_events = GF_CALLOC (sizeof(shd_crawl_event_t*), + priv->child_count, + gf_afr_mt_shd_crawl_event_t); + + if (!priv->shd.crawl_events) { + ret = -1; + goto out; + } + ret = 0; +out: + return ret; + +} diff --git a/xlators/cluster/afr/src/afr-dir-read.c b/xlators/cluster/afr/src/afr-dir-read.c index d5e181a5d..689dd84e6 100644 --- a/xlators/cluster/afr/src/afr-dir-read.c +++ b/xlators/cluster/afr/src/afr-dir-read.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ @@ -24,6 +15,7 @@ #include <sys/time.h> #include <stdlib.h> #include <signal.h> +#include <string.h> #ifndef _CONFIG_H #define _CONFIG_H @@ -42,304 +34,512 @@ #include "common-utils.h" #include "compat-errno.h" #include "compat.h" +#include "checksum.h" #include "afr.h" +#include "afr-self-heal.h" +#include "afr-self-heal-common.h" +int +afr_examine_dir_sh_unwind (call_frame_t *frame, xlator_t *this, int32_t op_ret, + int32_t op_errno, int32_t sh_failed) +{ + afr_local_t *local = NULL; -int32_t -afr_opendir_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - fd_t *fd) + local = frame->local; + + afr_set_opendir_done (this, local->fd->inode); + + AFR_STACK_UNWIND (opendir, frame, local->op_ret, + local->op_errno, local->fd, NULL); + + return 0; +} + + +gf_boolean_t +__checksums_differ (uint32_t *checksum, int child_count, + unsigned char *child_up) { - afr_local_t * local = NULL; + int ret = _gf_false; + int i = 0; + uint32_t cksum = 0; + gf_boolean_t activate_check = _gf_false; + + for (i = 0; i < child_count; i++) { + if (!child_up[i]) + continue; + if (_gf_false == activate_check) { + cksum = checksum[i]; + activate_check = _gf_true; + continue; + } + + if (cksum != checksum[i]) { + ret = _gf_true; + break; + } + + cksum = checksum[i]; + } + + return ret; +} - int call_count = -1; - LOCK (&frame->lock); - { - local = frame->local; +int32_t +afr_examine_dir_readdir_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + gf_dirent_t *entries, dict_t *xdata) +{ + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + afr_self_heal_t * sh = NULL; + gf_dirent_t * entry = NULL; + gf_dirent_t * tmp = NULL; + char *reason = NULL; + int child_index = 0; + uint32_t entry_cksum = 0; + int call_count = 0; + off_t last_offset = 0; + inode_t *inode = NULL; + + priv = this->private; + local = frame->local; + sh = &local->self_heal; + inode = local->fd->inode; + + child_index = (long) cookie; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_INFO, + "%s: failed to do opendir on %s", + local->loc.path, priv->children[child_index]->name); + local->op_ret = -1; + local->op_ret = op_errno; + goto out; + } + + if (op_ret == 0) { + gf_log (this->name, GF_LOG_DEBUG, + "%s: no entries found in %s", + local->loc.path, priv->children[child_index]->name); + goto out; + } + + list_for_each_entry_safe (entry, tmp, &entries->list, list) { + entry_cksum = gf_rsync_weak_checksum ((unsigned char *)entry->d_name, + strlen (entry->d_name)); + local->cont.opendir.checksum[child_index] ^= entry_cksum; + } + + list_for_each_entry (entry, &entries->list, list) { + last_offset = entry->d_off; + } + + /* read more entries */ + + STACK_WIND_COOKIE (frame, afr_examine_dir_readdir_cbk, + (void *) (long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->readdir, + local->fd, 131072, last_offset, NULL); + + return 0; + +out: + call_count = afr_frame_return (frame); - if (op_ret == 0) - local->op_ret = 0; + if (call_count == 0) { + if (__checksums_differ (local->cont.opendir.checksum, + priv->child_count, + local->child_up)) { - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + sh->do_entry_self_heal = _gf_true; + sh->forced_merge = _gf_true; - call_count = afr_frame_return (frame); + reason = "checksums of directory differ"; + afr_launch_self_heal (frame, this, inode, _gf_false, + inode->ia_type, reason, NULL, + afr_examine_dir_sh_unwind); + } else { + afr_set_opendir_done (this, inode); - if (call_count == 0) { - AFR_STACK_UNWIND (frame, local->op_ret, - local->op_errno, local->fd); - } + AFR_STACK_UNWIND (opendir, frame, local->op_ret, + local->op_errno, local->fd, NULL); + } + } - return 0; + return 0; } -int32_t -afr_opendir (call_frame_t *frame, xlator_t *this, - loc_t *loc, fd_t *fd) +int +afr_examine_dir (call_frame_t *frame, xlator_t *this) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - - int child_count = 0; - int i = 0; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + int i = 0; + int call_count = 0; - int ret = -1; - int call_count = -1; + local = frame->local; + priv = this->private; - int32_t op_ret = -1; - int32_t op_errno = 0; + local->cont.opendir.checksum = GF_CALLOC (priv->child_count, + sizeof (*local->cont.opendir.checksum), + gf_afr_mt_int32_t); - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + call_count = afr_up_children_count (local->child_up, priv->child_count); - priv = this->private; + local->call_count = call_count; - child_count = priv->child_count; + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND_COOKIE (frame, afr_examine_dir_readdir_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->readdir, + local->fd, 131072, 0, NULL); - ALLOC_OR_GOTO (local, afr_local_t, out); - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + if (!--call_count) + break; + } + } - frame->local = local; - local->fd = fd_ref (fd); + return 0; +} - call_count = local->call_count; - - for (i = 0; i < child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, afr_opendir_cbk, - priv->children[i], - priv->children[i]->fops->opendir, - loc, fd); - if (!--call_count) - break; - } - } +int32_t +afr_opendir_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + fd_t *fd, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int32_t up_children_count = 0; + int ret = -1; + int call_count = -1; + int32_t child_index = 0; + + priv = this->private; + local = frame->local; + child_index = (long) cookie; + + up_children_count = afr_up_children_count (local->child_up, + priv->child_count); + + LOCK (&frame->lock); + { + if (op_ret >= 0) { + local->op_ret = op_ret; + ret = afr_child_fd_ctx_set (this, fd, child_index, 0); + if (ret) { + local->op_ret = -1; + local->op_errno = -ret; + goto unlock; + } + } + + local->op_errno = op_errno; + } +unlock: + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) { + if (local->op_ret != 0) + goto out; + + if (!afr_is_opendir_done (this, local->fd->inode) && + up_children_count > 1 && priv->entry_self_heal) { + + /* + * This is the first opendir on this inode. We need + * to check if the directory's entries are the same + * on all subvolumes. This is needed in addition + * to regular entry self-heal because the readdir + * call is sent only to the first subvolume, and + * thus files that exist only there will never be healed + * otherwise (assuming changelog shows no anomalies). + */ + + gf_log (this->name, GF_LOG_TRACE, + "reading contents of directory %s looking for mismatch", + local->loc.path); + + afr_examine_dir (frame, this); + + } else { + /* do the unwind */ + goto out; + } + } + + return 0; - op_ret = 0; out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, fd); - } + AFR_STACK_UNWIND (opendir, frame, local->op_ret, + local->op_errno, local->fd, NULL); - return 0; + return 0; } -/** - * Common algorithm for directory read calls: - * - * - Try the fop on the first child that is up - * - if we have failed due to ENOTCONN: - * try the next child - * - * Applicable to: readdir - */ - int32_t -afr_readdir_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - gf_dirent_t *buf) +afr_opendir (call_frame_t *frame, xlator_t *this, + loc_t *loc, fd_t *fd) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - xlator_t ** children = NULL; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + int child_count = 0; + int i = 0; + int ret = -1; + int call_count = -1; + int32_t op_errno = 0; - int unwind = 1; - int last_tried = -1; - int this_try = -1; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - priv = this->private; - children = priv->children; + priv = this->private; - local = frame->local; + child_count = priv->child_count; - if (op_ret == -1) { - last_tried = local->cont.readdir.last_tried; + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; - if (all_tried (last_tried, priv->child_count)) { - goto out; - } + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - this_try = ++local->cont.readdir.last_tried; - unwind = 0; + loc_copy (&local->loc, loc); - STACK_WIND (frame, afr_readdir_cbk, - children[this_try], - children[this_try]->fops->readdir, - local->fd, local->cont.readdir.size, - local->cont.readdir.offset); - } + local->fd = fd_ref (fd); -out: - if (unwind) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, buf); - } + call_count = local->call_count; - return 0; -} + for (i = 0; i < child_count; i++) { + if (local->child_up[i]) { + STACK_WIND_COOKIE (frame, afr_opendir_cbk, + (void*) (long) i, + priv->children[i], + priv->children[i]->fops->opendir, + loc, fd, NULL); + if (!--call_count) + break; + } + } -int32_t -afr_readdir (call_frame_t *frame, xlator_t *this, - fd_t *fd, size_t size, off_t offset) -{ - afr_private_t * priv = NULL; - xlator_t ** children = NULL; - int call_child = 0; - afr_local_t *local = NULL; - - int ret = -1; - - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - children = priv->children; - - ALLOC_OR_GOTO (local, afr_local_t, out); - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - frame->local = local; - - call_child = afr_first_up_child (priv); - if (call_child == -1) { - op_errno = ENOTCONN; - gf_log (this->name, GF_LOG_DEBUG, - "no child is up"); - goto out; - } - - local->cont.readdir.last_tried = call_child; - - local->fd = fd_ref (fd); - local->cont.readdir.size = size; - local->cont.readdir.offset = offset; - - STACK_WIND (frame, afr_readdir_cbk, - children[call_child], children[call_child]->fops->readdir, - fd, size, offset); - - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } - return 0; + if (ret < 0) + AFR_STACK_UNWIND (opendir, frame, -1, op_errno, fd, NULL); + + return 0; } -int32_t -afr_getdents_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - dir_entry_t *entry, int32_t count) -{ - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - xlator_t ** children = NULL; +/** + * Common algorithm for directory read calls: + * + * - Try the fop on the first child that is up + * - if we have failed due to ENOTCONN: + * try the next child + * + * Applicable to: readdir + */ - int unwind = 1; - int last_tried = -1; - int this_try = -1; - priv = this->private; - children = priv->children; +struct entry_name { + char *name; + struct list_head list; +}; - local = frame->local; +static void +afr_forget_entries (fd_t *fd) +{ + struct entry_name *entry = NULL; + struct entry_name *tmp = NULL; + int ret = 0; + uint64_t ctx = 0; + afr_fd_ctx_t *fd_ctx = NULL; + + ret = fd_ctx_get (fd, THIS, &ctx); + if (ret < 0) { + gf_log (THIS->name, GF_LOG_INFO, + "could not get fd ctx for fd=%p", fd); + return; + } + + fd_ctx = (afr_fd_ctx_t *)(long) ctx; + + list_for_each_entry_safe (entry, tmp, &fd_ctx->entries, list) { + GF_FREE (entry->name); + list_del (&entry->list); + GF_FREE (entry); + } +} - if (op_ret == -1) { - last_tried = local->cont.getdents.last_tried; +static void +afr_readdir_filter_trash_dir (gf_dirent_t *entries, fd_t *fd) +{ + gf_dirent_t * entry = NULL; + gf_dirent_t * tmp = NULL; + + list_for_each_entry_safe (entry, tmp, &entries->list, list) { + if (__is_root_gfid (fd->inode->gfid) && + !strcmp (entry->d_name, GF_REPLICATE_TRASH_DIR)) { + list_del_init (&entry->list); + GF_FREE (entry); + } + } +} - if (all_tried (last_tried, priv->child_count)) { - goto out; - } +int32_t +afr_readdir_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + gf_dirent_t *entries, dict_t *xdata) +{ + afr_local_t *local = NULL; - this_try = ++local->cont.getdents.last_tried; - unwind = 0; + if (op_ret == -1) + goto out; - STACK_WIND (frame, afr_getdents_cbk, - children[this_try], - children[this_try]->fops->getdents, - local->fd, local->cont.getdents.size, - local->cont.getdents.offset, local->cont.getdents.flag); - } + local = frame->local; + afr_readdir_filter_trash_dir (entries, local->fd); out: - if (unwind) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, entry, count); - } - - return 0; + AFR_STACK_UNWIND (readdir, frame, op_ret, op_errno, entries, NULL); + return 0; } int32_t -afr_getdents (call_frame_t *frame, xlator_t *this, - fd_t *fd, size_t size, off_t offset, int32_t flag) +afr_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, gf_dirent_t *entries, + dict_t *xdata) { - afr_private_t * priv = NULL; - xlator_t ** children = NULL; - int call_child = 0; - afr_local_t *local = NULL; + afr_local_t *local = NULL; - int32_t op_ret = -1; - int32_t op_errno = 0; + if (op_ret == -1) + goto out; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + local = frame->local; + afr_readdir_filter_trash_dir (entries, local->fd); - priv = this->private; - children = priv->children; +out: + AFR_STACK_UNWIND (readdirp, frame, op_ret, op_errno, entries, NULL); + return 0; +} - ALLOC_OR_GOTO (local, afr_local_t, out); +int32_t +afr_do_readdir (call_frame_t *frame, xlator_t *this, + fd_t *fd, size_t size, off_t offset, int whichop, dict_t *dict) +{ + afr_private_t *priv = NULL; + xlator_t **children = NULL; + int call_child = 0; + afr_local_t *local = NULL; + afr_fd_ctx_t *fd_ctx = NULL; + int ret = -1; + int32_t op_errno = 0; + uint64_t read_child = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + children = priv->children; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + local->fresh_children = afr_children_create (priv->child_count); + if (!local->fresh_children) { + op_errno = ENOMEM; + goto out; + } + + read_child = afr_inode_get_read_ctx (this, fd->inode, + local->fresh_children); + ret = afr_get_call_child (this, local->child_up, read_child, + local->fresh_children, + &call_child, + &local->cont.readdir.last_index); + if (ret < 0) { + op_errno = -ret; + goto out; + } + + fd_ctx = afr_fd_ctx_get (fd, this); + if (!fd_ctx) { + op_errno = EBADF; + goto out; + } + + if ((offset == 0) || (fd_ctx->call_child == -1)) { + fd_ctx->call_child = call_child; + } else if ((priv->readdir_failover == _gf_false) && + (call_child != fd_ctx->call_child)) { + op_errno = EBADF; + goto out; + } + + local->fd = fd_ref (fd); + local->cont.readdir.size = size; + local->cont.readdir.dict = (dict)? dict_ref (dict) : NULL; + + if (whichop == GF_FOP_READDIR) + STACK_WIND_COOKIE (frame, afr_readdir_cbk, + (void *) (long) call_child, + children[call_child], + children[call_child]->fops->readdir, fd, + size, offset, dict); + else + STACK_WIND_COOKIE (frame, afr_readdirp_cbk, + (void *) (long) call_child, + children[call_child], + children[call_child]->fops->readdirp, fd, + size, offset, dict); + + return 0; +out: + AFR_STACK_UNWIND (readdir, frame, -1, op_errno, NULL, NULL); + return 0; +} - call_child = afr_first_up_child (priv); - if (call_child == -1) { - op_errno = ENOTCONN; - gf_log (this->name, GF_LOG_DEBUG, - "no child is up."); - goto out; - } - local->cont.getdents.last_tried = call_child; +int32_t +afr_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t offset, dict_t *xdata) +{ + afr_do_readdir (frame, this, fd, size, offset, GF_FOP_READDIR, xdata); + return 0; +} - local->fd = fd_ref (fd); - local->cont.getdents.size = size; - local->cont.getdents.offset = offset; - local->cont.getdents.flag = flag; - - frame->local = local; +int32_t +afr_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t offset, dict_t *dict) +{ + afr_do_readdir (frame, this, fd, size, offset, GF_FOP_READDIRP, dict); + return 0; +} - STACK_WIND (frame, afr_getdents_cbk, - children[call_child], children[call_child]->fops->getdents, - fd, size, offset, flag); - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } +int32_t +afr_releasedir (xlator_t *this, fd_t *fd) +{ + afr_forget_entries (fd); + afr_cleanup_fd_ctx (this, fd); - return 0; + return 0; } - - diff --git a/xlators/cluster/afr/src/afr-dir-read.h b/xlators/cluster/afr/src/afr-dir-read.h index 6d981fdfd..09456d159 100644 --- a/xlators/cluster/afr/src/afr-dir-read.h +++ b/xlators/cluster/afr/src/afr-dir-read.h @@ -1,20 +1,11 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef __DIR_READ_H__ @@ -23,25 +14,23 @@ int32_t afr_opendir (call_frame_t *frame, xlator_t *this, - loc_t *loc, fd_t *fd); + loc_t *loc, fd_t *fd, dict_t *xdata); int32_t -afr_closedir (call_frame_t *frame, xlator_t *this, - fd_t *fd); +afr_releasedir (xlator_t *this, fd_t *fd); int32_t afr_readdir (call_frame_t *frame, xlator_t *this, - fd_t *fd, size_t size, off_t offset); + fd_t *fd, size_t size, off_t offset, dict_t *xdata); int32_t -afr_getdents (call_frame_t *frame, xlator_t *this, - fd_t *fd, size_t size, off_t offset, int32_t flag); - +afr_readdirp (call_frame_t *frame, xlator_t *this, + fd_t *fd, size_t size, off_t offset, dict_t *dict); int32_t afr_checksum (call_frame_t *frame, xlator_t *this, - loc_t *loc, int32_t flags); + loc_t *loc, int32_t flags, dict_t *xdata); #endif /* __DIR_READ_H__ */ diff --git a/xlators/cluster/afr/src/afr-dir-write.c b/xlators/cluster/afr/src/afr-dir-write.c index b07ac3c48..1943b719b 100644 --- a/xlators/cluster/afr/src/afr-dir-write.c +++ b/xlators/cluster/afr/src/afr-dir-write.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> This file is part of GlusterFS. - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ @@ -47,268 +38,470 @@ #include "afr.h" #include "afr-transaction.h" +int +afr_build_parent_loc (loc_t *parent, loc_t *child, int32_t *op_errno) +{ + int ret = -1; + char *child_path = NULL; + + if (!child->parent) { + if (op_errno) + *op_errno = EINVAL; + goto out; + } + + child_path = gf_strdup (child->path); + if (!child_path) { + if (op_errno) + *op_errno = ENOMEM; + goto out; + } + parent->path = gf_strdup( dirname (child_path) ); + if (!parent->path) { + if (op_errno) + *op_errno = ENOMEM; + goto out; + } + parent->inode = inode_ref (child->parent); + uuid_copy (parent->gfid, child->pargfid); + + ret = 0; +out: + GF_FREE(child_path); + + return ret; +} void -afr_build_parent_loc (loc_t *parent, loc_t *child) +__dir_entry_fop_common_cbk (call_frame_t *frame, int child_index, + xlator_t *this, int32_t op_ret, + int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, struct iatt *prenewparent, + struct iatt *postnewparent) { - char *tmp = NULL; + afr_local_t *local = NULL; + + local = frame->local; + + if (afr_fop_failed (op_ret, op_errno)) + afr_transaction_fop_failed (frame, this, child_index); + + if (op_ret > -1) { + local->op_ret = op_ret; + + if ((local->success_count == 0) || + (child_index == local->read_child_index)) { + local->cont.dir_fop.preparent = *preparent; + local->cont.dir_fop.postparent = *postparent; + if (buf) + local->cont.dir_fop.buf = *buf; + if (prenewparent) + local->cont.dir_fop.prenewparent = *prenewparent; + if (postnewparent) + local->cont.dir_fop.postnewparent = *postnewparent; + } - if (!child->parent) { - loc_copy (parent, child); - return; - } + local->cont.dir_fop.inode = inode; - tmp = strdup (child->path); - parent->path = strdup (dirname (tmp)); - FREE (tmp); + local->fresh_children[local->success_count] = child_index; + local->success_count++; + local->child_errno[child_index] = 0; + } else { + local->child_errno[child_index] = op_errno; + } - parent->name = strrchr (parent->path, '/'); - if (parent->name) - parent->name++; + local->op_errno = op_errno; +} - parent->inode = inode_ref (child->parent); - parent->parent = inode_parent (parent->inode, 0, NULL); - parent->ino = parent->inode->ino; +int +afr_mark_new_entry_changelog_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, + int32_t op_ret, int32_t op_errno, + dict_t *xattr, dict_t *xdata) +{ + int call_count = 0; + + call_count = afr_frame_return (frame); + if (call_count == 0) { + AFR_STACK_DESTROY (frame); + } + return 0; } -/* {{{ create */ +void +afr_mark_new_entry_changelog (call_frame_t *frame, xlator_t *this) +{ + call_frame_t *new_frame = NULL; + afr_local_t *local = NULL; + afr_local_t *new_local = NULL; + afr_private_t *priv = NULL; + dict_t **xattr = NULL; + int32_t **changelog = NULL; + int i = 0; + GF_UNUSED int op_errno = 0; + + local = frame->local; + priv = this->private; + + new_frame = copy_frame (frame); + if (!new_frame) { + goto out; + } -int -afr_create_unwind (call_frame_t *frame, xlator_t *this) + AFR_LOCAL_ALLOC_OR_GOTO (new_frame->local, out); + new_local = new_frame->local; + changelog = afr_matrix_create (priv->child_count, AFR_NUM_CHANGE_LOGS); + if (!changelog) + goto out; + + xattr = GF_CALLOC (priv->child_count, sizeof (*xattr), + gf_afr_mt_dict_t); + if (!xattr) + goto out; + for (i = 0; i < priv->child_count; i++) { + if (local->child_errno[i]) + continue; + xattr[i] = dict_new (); + if (!xattr[i]) + goto out; + } + + afr_prepare_new_entry_pending_matrix (changelog, + afr_is_errno_set, + local->child_errno, + &local->cont.dir_fop.buf, + priv->child_count); + + new_local->pending = changelog; + uuid_copy (new_local->loc.gfid, local->cont.dir_fop.buf.ia_gfid); + new_local->loc.inode = inode_ref (local->cont.dir_fop.inode); + new_local->call_count = local->success_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_errno[i]) + continue; + + afr_set_pending_dict (priv, xattr[i], changelog, i, LOCAL_LAST); + STACK_WIND_COOKIE (new_frame, afr_mark_new_entry_changelog_cbk, + (void *) (long) i, priv->children[i], + priv->children[i]->fops->xattrop, + &new_local->loc, GF_XATTROP_ADD_ARRAY, + xattr[i], NULL); + } + new_frame = NULL; +out: + if (new_frame) + AFR_STACK_DESTROY (new_frame); + afr_xattr_array_destroy (xattr, priv->child_count); + return; +} + +gf_boolean_t +afr_is_new_entry_changelog_needed (glusterfs_fop_t fop) { - call_frame_t *main_frame = NULL; - afr_local_t *local = NULL; - - local = frame->local; - - LOCK (&frame->lock); - { - if (local->transaction.main_frame) { - main_frame = local->transaction.main_frame; - } - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - - if (main_frame) { - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - local->cont.create.fd, - local->cont.create.inode, - &local->cont.create.buf); - } - - return 0; + glusterfs_fop_t fops[] = {GF_FOP_CREATE, GF_FOP_MKNOD, GF_FOP_NULL}; + int i = 0; + + for (i = 0; fops[i] != GF_FOP_NULL; i++) { + if (fop == fops[i]) + return _gf_true; + } + return _gf_false; } +void +afr_dir_fop_mark_entry_pending_changelog (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + + local = frame->local; + priv = this->private; + + if (local->op_ret < 0) + goto out; + + if (local->success_count == priv->child_count) + goto out; + + if (!afr_is_new_entry_changelog_needed (local->op)) + goto out; + + afr_mark_new_entry_changelog (frame, this); + +out: + return; +} + +void +afr_dir_fop_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + + local = frame->local; + priv = this->private; + + if (local->cont.dir_fop.inode == NULL) + goto done; + afr_set_read_ctx_from_policy (this, local->cont.dir_fop.inode, + local->fresh_children, + local->read_child_index, + priv->read_child, + local->cont.dir_fop.buf.ia_gfid); +done: + local->transaction.unwind (frame, this); + afr_dir_fop_mark_entry_pending_changelog (frame, this); + local->transaction.resume (frame, this); +} + +/* {{{ create */ int -afr_create_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, - fd_t *fd, inode_t *inode, struct stat *buf) +afr_create_unwind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + call_frame_t *main_frame = NULL; + afr_local_t *local = NULL; - int ret = 0; + local = frame->local; - int call_count = -1; - int child_index = -1; + LOCK (&frame->lock); + { + if (local->transaction.main_frame) { + main_frame = local->transaction.main_frame; + } + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (create, main_frame, + local->op_ret, local->op_errno, + local->cont.create.fd, + local->cont.dir_fop.inode, + &local->cont.dir_fop.buf, + &local->cont.dir_fop.preparent, + &local->cont.dir_fop.postparent, + local->xdata_rsp); + } - local = frame->local; - priv = this->private; + return 0; +} - child_index = (long) cookie; - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); - - ret = afr_fd_ctx_set (this, fd); +int +afr_create_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + fd_t *fd, inode_t *inode, struct iatt *buf, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) +{ + afr_local_t *local = NULL; + uint64_t ctx = 0; + afr_fd_ctx_t *fd_ctx = NULL; + int ret = 0; + int call_count = -1; + int child_index = -1; - if (ret < 0) { - gf_log (this->name, GF_LOG_DEBUG, - "could not set ctx on fd=%p", fd); + local = frame->local; - local->op_ret = -1; - local->op_errno = -ret; - } + child_index = (long) cookie; - - if (op_ret != -1) { - local->op_ret = op_ret; + LOCK (&frame->lock); + { + if (op_ret > -1) { + ret = afr_fd_ctx_set (this, fd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "could not set ctx on fd=%p", fd); + + local->op_ret = -1; + local->op_errno = -ret; + goto unlock; + } - if (local->success_count == 0) { - local->cont.create.buf = *buf; - local->cont.create.buf.st_ino = - afr_itransform (buf->st_ino, - priv->child_count, - child_index); - - if (priv->read_child >= 0) { - afr_set_read_child (this, inode, - priv->read_child); - } else { - afr_set_read_child (this, inode, - local->read_child_index); - } - } - - if (child_index == local->read_child_index) { - if (priv->read_child >= 0) { - afr_set_read_child (this, inode, - priv->read_child); - } else { - afr_set_read_child (this, inode, - local->read_child_index); - } + ret = fd_ctx_get (fd, this, &ctx); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "could not get fd ctx for fd=%p", fd); + local->op_ret = -1; + local->op_errno = -ret; + goto unlock; } - local->cont.create.inode = inode; + fd_ctx = (afr_fd_ctx_t *)(long) ctx; + + fd_ctx->opened_on[child_index] = AFR_FD_OPENED; + fd_ctx->flags = local->cont.create.flags; - local->success_count++; - } + if (local->success_count == 0) { + if (xdata) + local->xdata_rsp = dict_ref(xdata); + } + } + __dir_entry_fop_common_cbk (frame, child_index, this, + op_ret, op_errno, inode, buf, + preparent, postparent, NULL, NULL); + } - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); +unlock: + UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + call_count = afr_frame_return (frame); - if (call_count == 0) { - local->transaction.unwind (frame, this); + if (call_count == 0) + afr_dir_fop_done (frame, this); - local->transaction.resume (frame, this); - } - - return 0; + return 0; } int afr_create_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int i = 0; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_create_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->create, - &local->loc, - local->cont.create.flags, - local->cont.create.mode, - local->cont.create.fd); - if (!--call_count) - break; - } - } - - return 0; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_create_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->create, + &local->loc, + local->cont.create.flags, + local->cont.create.mode, + local->umask, + local->cont.create.fd, + local->xdata_req); + if (!--call_count) + break; + } + } + + return 0; } int afr_create_done (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; + afr_local_t * local = NULL; - local = frame->local; + local = frame->local; - local->transaction.unwind (frame, this); + local->transaction.unwind (frame, this); - AFR_STACK_DESTROY (frame); + AFR_STACK_DESTROY (frame); - return 0; + return 0; } int afr_create (call_frame_t *frame, xlator_t *this, - loc_t *loc, int32_t flags, mode_t mode, fd_t *fd) + loc_t *loc, int32_t flags, mode_t mode, + mode_t umask, fd_t *fd, dict_t *params) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t * transaction_frame = NULL; - - int ret = -1; - - int op_ret = -1; - int op_errno = 0; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - priv = this->private; + priv = this->private; - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + QUORUM_CHECK(create,out); - ALLOC_OR_GOTO (local, afr_local_t, out); + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; - transaction_frame->local = local; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - loc_copy (&local->loc, loc); + loc_copy (&local->loc, loc); LOCK (&priv->read_child_lock); { - local->read_child_index = (++priv->read_child_rr) + local->read_child_index = (++priv->read_child_rr) % (priv->child_count); } UNLOCK (&priv->read_child_lock); - local->cont.create.flags = flags; - local->cont.create.mode = mode; - local->cont.create.fd = fd_ref (fd); - - local->transaction.fop = afr_create_wind; - local->transaction.done = afr_create_done; - local->transaction.unwind = afr_create_unwind; - - afr_build_parent_loc (&local->transaction.parent_loc, loc); - - local->transaction.main_frame = frame; - local->transaction.basename = AFR_BASENAME (loc->path); - - afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + local->op = GF_FOP_CREATE; + local->cont.create.flags = flags; + local->cont.create.mode = mode; + local->cont.create.fd = fd_ref (fd); + local->umask = umask; + if (params) + local->xdata_req = dict_ref (params); + + local->transaction.fop = afr_create_wind; + local->transaction.done = afr_create_done; + local->transaction.unwind = afr_create_unwind; + + ret = afr_build_parent_loc (&local->transaction.parent_loc, loc, + &op_errno); + if (ret) + goto out; + + local->transaction.main_frame = frame; + local->transaction.basename = AFR_BASENAME (loc->path); + int_lock = &local->internal_lock; + + int_lock->lockee_count = 0; + ret = afr_init_entry_lockee (&int_lock->lockee[0], local, + &local->transaction.parent_loc, + local->transaction.basename, + priv->child_count); + if (ret) + goto out; + + int_lock->lockee_count++; + ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (create, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL, NULL); + } - return 0; + return 0; } /* }}} */ @@ -318,220 +511,201 @@ out: int afr_mknod_unwind (call_frame_t *frame, xlator_t *this) { - call_frame_t *main_frame = NULL; - afr_local_t *local = NULL; + call_frame_t *main_frame = NULL; + afr_local_t *local = NULL; - local = frame->local; + local = frame->local; - LOCK (&frame->lock); - { - if (local->transaction.main_frame) { - main_frame = local->transaction.main_frame; - } - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - - if (main_frame) { - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - local->cont.mknod.inode, - &local->cont.mknod.buf); + LOCK (&frame->lock); + { + if (local->transaction.main_frame) { + main_frame = local->transaction.main_frame; + } + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (mknod, main_frame, + local->op_ret, local->op_errno, + local->cont.dir_fop.inode, + &local->cont.dir_fop.buf, + &local->cont.dir_fop.preparent, + &local->cont.dir_fop.postparent, + NULL); } - return 0; + return 0; } int -afr_mknod_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf) +afr_mknod_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int call_count = -1; - int child_index = -1; - - local = frame->local; - priv = this->private; - - child_index = (long) cookie; - - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); - - if (op_ret != -1) { - local->op_ret = op_ret; - - if (local->success_count == 0){ - local->cont.mknod.buf = *buf; - local->cont.mknod.buf.st_ino = - afr_itransform (buf->st_ino, - priv->child_count, - child_index); - - if (priv->read_child >= 0) { - afr_set_read_child (this, inode, - priv->read_child); - } else { - afr_set_read_child (this, inode, - local->read_child_index); - } - } + int call_count = -1; + int child_index = -1; - if (child_index == local->read_child_index) { - if (priv->read_child >= 0) { - afr_set_read_child (this, inode, - priv->read_child); - } else { - afr_set_read_child (this, inode, - local->read_child_index); - } - } - - local->cont.mknod.inode = inode; + child_index = (long) cookie; - local->success_count++; - } - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + LOCK (&frame->lock); + { + __dir_entry_fop_common_cbk (frame, child_index, this, + op_ret, op_errno, inode, buf, + preparent, postparent, NULL, NULL); + } + UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + call_count = afr_frame_return (frame); - if (call_count == 0) { - local->transaction.unwind (frame, this); + if (call_count == 0) + afr_dir_fop_done (frame, this); - local->transaction.resume (frame, this); - } - - return 0; + return 0; } int32_t afr_mknod_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int i = 0; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_mknod_wind_cbk, (void *) (long) i, - priv->children[i], - priv->children[i]->fops->mknod, - &local->loc, local->cont.mknod.mode, - local->cont.mknod.dev); - if (!--call_count) - break; - } - } - - return 0; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_mknod_wind_cbk, (void *) (long) i, + priv->children[i], + priv->children[i]->fops->mknod, + &local->loc, local->cont.mknod.mode, + local->cont.mknod.dev, + local->umask, + local->xdata_req); + if (!--call_count) + break; + } + } + + return 0; } int afr_mknod_done (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; + afr_local_t * local = NULL; - local = frame->local; + local = frame->local; - local->transaction.unwind (frame, this); - AFR_STACK_DESTROY (frame); + local->transaction.unwind (frame, this); + AFR_STACK_DESTROY (frame); - return 0; + return 0; } int -afr_mknod (call_frame_t *frame, xlator_t *this, - loc_t *loc, mode_t mode, dev_t dev) +afr_mknod (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode, + dev_t dev, mode_t umask, dict_t *params) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t * transaction_frame = NULL; - - int ret = -1; - - int op_ret = -1; - int op_errno = 0; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - priv = this->private; + priv = this->private; - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + QUORUM_CHECK(mknod,out); - ALLOC_OR_GOTO (local, afr_local_t, out); + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; - transaction_frame->local = local; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - loc_copy (&local->loc, loc); + loc_copy (&local->loc, loc); LOCK (&priv->read_child_lock); { - local->read_child_index = (++priv->read_child_rr) + local->read_child_index = (++priv->read_child_rr) % (priv->child_count); } UNLOCK (&priv->read_child_lock); - local->cont.mknod.mode = mode; - local->cont.mknod.dev = dev; - - local->transaction.fop = afr_mknod_wind; - local->transaction.done = afr_mknod_done; - local->transaction.unwind = afr_mknod_unwind; - - afr_build_parent_loc (&local->transaction.parent_loc, loc); - - local->transaction.main_frame = frame; - local->transaction.basename = AFR_BASENAME (loc->path); - - afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + local->op = GF_FOP_MKNOD; + local->cont.mknod.mode = mode; + local->cont.mknod.dev = dev; + local->umask = umask; + if (params) + local->xdata_req = dict_ref (params); + + local->transaction.fop = afr_mknod_wind; + local->transaction.done = afr_mknod_done; + local->transaction.unwind = afr_mknod_unwind; + + ret = afr_build_parent_loc (&local->transaction.parent_loc, loc, + &op_errno); + if (ret) + goto out; + + local->transaction.main_frame = frame; + local->transaction.basename = AFR_BASENAME (loc->path); + int_lock = &local->internal_lock; + + int_lock->lockee_count = 0; + ret = afr_init_entry_lockee (&int_lock->lockee[0], local, + &local->transaction.parent_loc, + local->transaction.basename, + priv->child_count); + if (ret) + goto out; + + int_lock->lockee_count++; + ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (mknod, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL); + } - return 0; + return 0; } /* }}} */ @@ -542,220 +716,201 @@ out: int afr_mkdir_unwind (call_frame_t *frame, xlator_t *this) { - call_frame_t *main_frame = NULL; - afr_local_t *local = NULL; - - local = frame->local; + call_frame_t *main_frame = NULL; + afr_local_t *local = NULL; - LOCK (&frame->lock); - { - if (local->transaction.main_frame) { - main_frame = local->transaction.main_frame; - } - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); + local = frame->local; - if (main_frame) { - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - local->cont.mkdir.inode, - &local->cont.mkdir.buf); + LOCK (&frame->lock); + { + if (local->transaction.main_frame) { + main_frame = local->transaction.main_frame; + } + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (mkdir, main_frame, + local->op_ret, local->op_errno, + local->cont.dir_fop.inode, + &local->cont.dir_fop.buf, + &local->cont.dir_fop.preparent, + &local->cont.dir_fop.postparent, + NULL); } - return 0; + return 0; } int -afr_mkdir_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf) +afr_mkdir_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int call_count = -1; - int child_index = -1; - - local = frame->local; - priv = this->private; - - child_index = (long) cookie; - - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); - - if (op_ret != -1) { - local->op_ret = op_ret; - - if (local->success_count == 0) { - local->cont.mkdir.buf = *buf; - local->cont.mkdir.buf.st_ino = - afr_itransform (buf->st_ino, priv->child_count, - child_index); - - if (priv->read_child >= 0) { - afr_set_read_child (this, inode, - priv->read_child); - } else { - afr_set_read_child (this, inode, - local->read_child_index); - } - } - - if (child_index == local->read_child_index) { - if (priv->read_child >= 0) { - afr_set_read_child (this, inode, - priv->read_child); - } else { - afr_set_read_child (this, inode, - local->read_child_index); - } - } + int call_count = -1; + int child_index = -1; - local->cont.mkdir.inode = inode; + child_index = (long) cookie; - local->success_count++; - } - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + LOCK (&frame->lock); + { + __dir_entry_fop_common_cbk (frame, child_index, this, + op_ret, op_errno, inode, buf, + preparent, postparent, NULL, NULL); + } + UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + call_count = afr_frame_return (frame); - if (call_count == 0) { - local->transaction.unwind (frame, this); + if (call_count == 0) + afr_dir_fop_done (frame, this); - local->transaction.resume (frame, this); - } - - return 0; + return 0; } int afr_mkdir_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int i = 0; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_mkdir_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->mkdir, - &local->loc, local->cont.mkdir.mode); - if (!--call_count) - break; - } - } - - return 0; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_mkdir_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->mkdir, + &local->loc, local->cont.mkdir.mode, + local->umask, + local->xdata_req); + if (!--call_count) + break; + } + } + + return 0; } int afr_mkdir_done (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; + afr_local_t * local = NULL; - local = frame->local; + local = frame->local; - local->transaction.unwind (frame, this); + local->transaction.unwind (frame, this); - AFR_STACK_DESTROY (frame); + AFR_STACK_DESTROY (frame); - return 0; + return 0; } - int afr_mkdir (call_frame_t *frame, xlator_t *this, - loc_t *loc, mode_t mode) + loc_t *loc, mode_t mode, mode_t umask, dict_t *params) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t * transaction_frame = NULL; - - int ret = -1; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - int op_ret = -1; - int op_errno = 0; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + priv = this->private; - priv = this->private; + QUORUM_CHECK(mkdir,out); - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } - - ALLOC_OR_GOTO (local, afr_local_t, out); + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; - transaction_frame->local = local; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - loc_copy (&local->loc, loc); + loc_copy (&local->loc, loc); LOCK (&priv->read_child_lock); { - local->read_child_index = (++priv->read_child_rr) + local->read_child_index = (++priv->read_child_rr) % (priv->child_count); } UNLOCK (&priv->read_child_lock); - local->cont.mkdir.mode = mode; - - local->transaction.fop = afr_mkdir_wind; - local->transaction.done = afr_mkdir_done; - local->transaction.unwind = afr_mkdir_unwind; - - afr_build_parent_loc (&local->transaction.parent_loc, loc); - - local->transaction.main_frame = frame; - local->transaction.basename = AFR_BASENAME (loc->path); - - afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + local->cont.mkdir.mode = mode; + local->umask = umask; + if (params) + local->xdata_req = dict_ref (params); + + local->op = GF_FOP_MKDIR; + local->transaction.fop = afr_mkdir_wind; + local->transaction.done = afr_mkdir_done; + local->transaction.unwind = afr_mkdir_unwind; + + ret = afr_build_parent_loc (&local->transaction.parent_loc, loc, + &op_errno); + if (ret) + goto out; + + local->transaction.main_frame = frame; + local->transaction.basename = AFR_BASENAME (loc->path); + int_lock = &local->internal_lock; + + int_lock->lockee_count = 0; + ret = afr_init_entry_lockee (&int_lock->lockee[0], local, + &local->transaction.parent_loc, + local->transaction.basename, + priv->child_count); + if (ret) + goto out; + + int_lock->lockee_count++; + ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + AFR_STACK_UNWIND (mkdir, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL); + } - return 0; + return 0; } /* }}} */ @@ -766,222 +921,196 @@ out: int afr_link_unwind (call_frame_t *frame, xlator_t *this) { - call_frame_t *main_frame = NULL; - afr_local_t *local = NULL; + call_frame_t *main_frame = NULL; + afr_local_t *local = NULL; - local = frame->local; + local = frame->local; - LOCK (&frame->lock); - { - if (local->transaction.main_frame) { - main_frame = local->transaction.main_frame; - } - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - - if (main_frame) { - local->cont.link.buf.st_ino = local->cont.link.ino; - - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - local->cont.link.inode, - &local->cont.link.buf); - } + LOCK (&frame->lock); + { + if (local->transaction.main_frame) { + main_frame = local->transaction.main_frame; + } + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (link, main_frame, + local->op_ret, local->op_errno, + local->cont.dir_fop.inode, + &local->cont.dir_fop.buf, + &local->cont.dir_fop.preparent, + &local->cont.dir_fop.postparent, + NULL); + } - return 0; + return 0; } int -afr_link_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf) +afr_link_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int call_count = -1; - int child_index = -1; - - local = frame->local; - priv = this->private; - - child_index = (long) cookie; - - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); - - if (op_ret != -1) { - local->op_ret = op_ret; - - if (local->success_count == 0) { - local->cont.link.buf = *buf; - local->cont.link.buf.st_ino = - afr_itransform (buf->st_ino, priv->child_count, - child_index); - - if (priv->read_child >= 0) { - afr_set_read_child (this, inode, - priv->read_child); - } else { - afr_set_read_child (this, inode, - local->read_child_index); - } - } - - if (child_index == local->read_child_index) { - if (priv->read_child >= 0) { - afr_set_read_child (this, inode, - priv->read_child); - } else { - afr_set_read_child (this, inode, - local->read_child_index); - } - } + int call_count = -1; + int child_index = -1; - local->cont.link.inode = inode; + child_index = (long) cookie; - local->success_count++; - } - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + LOCK (&frame->lock); + { + __dir_entry_fop_common_cbk (frame, child_index, this, + op_ret, op_errno, inode, buf, + preparent, postparent, NULL, NULL); + } + UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + call_count = afr_frame_return (frame); - if (call_count == 0) { - local->transaction.unwind (frame, this); + if (call_count == 0) + afr_dir_fop_done (frame, this); - local->transaction.resume (frame, this); - } - - return 0; + return 0; } int afr_link_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int i = 0; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_link_wind_cbk, (void *) (long) i, - priv->children[i], - priv->children[i]->fops->link, - &local->loc, - &local->newloc); - - if (!--call_count) - break; - } - } - - return 0; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_link_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->link, + &local->loc, + &local->newloc, local->xdata_req); + + if (!--call_count) + break; + } + } + + return 0; } int afr_link_done (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = frame->local; + afr_local_t * local = frame->local; - local->transaction.unwind (frame, this); + local->transaction.unwind (frame, this); - AFR_STACK_DESTROY (frame); + AFR_STACK_DESTROY (frame); - return 0; + return 0; } int afr_link (call_frame_t *frame, xlator_t *this, - loc_t *oldloc, loc_t *newloc) + loc_t *oldloc, loc_t *newloc, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t * transaction_frame = NULL; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - int ret = -1; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - int op_ret = -1; - int op_errno = 0; + priv = this->private; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + QUORUM_CHECK(link,out); - priv = this->private; - - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } - - ALLOC_OR_GOTO (local, afr_local_t, out); + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; - transaction_frame->local = local; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - loc_copy (&local->loc, oldloc); - loc_copy (&local->newloc, newloc); + loc_copy (&local->loc, oldloc); + loc_copy (&local->newloc, newloc); + if (xdata) + local->xdata_req = dict_ref (xdata); LOCK (&priv->read_child_lock); { - local->read_child_index = (++priv->read_child_rr) + local->read_child_index = (++priv->read_child_rr) % (priv->child_count); } UNLOCK (&priv->read_child_lock); - local->cont.link.ino = oldloc->inode->ino; - - local->transaction.fop = afr_link_wind; - local->transaction.done = afr_link_done; - local->transaction.unwind = afr_link_unwind; - - afr_build_parent_loc (&local->transaction.parent_loc, oldloc); - - local->transaction.main_frame = frame; - local->transaction.basename = AFR_BASENAME (oldloc->path); - local->transaction.new_basename = AFR_BASENAME (newloc->path); - - afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); - - op_ret = 0; + local->op = GF_FOP_LINK; + local->transaction.fop = afr_link_wind; + local->transaction.done = afr_link_done; + local->transaction.unwind = afr_link_unwind; + + ret = afr_build_parent_loc (&local->transaction.parent_loc, newloc, + &op_errno); + if (ret) + goto out; + + local->transaction.main_frame = frame; + local->transaction.basename = AFR_BASENAME (newloc->path); + int_lock = &local->internal_lock; + + int_lock->lockee_count = 0; + ret = afr_init_entry_lockee (&int_lock->lockee[0], local, + &local->transaction.parent_loc, + local->transaction.basename, + priv->child_count); + if (ret) + goto out; + + int_lock->lockee_count++; + ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (link, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL); + } - return 0; + return 0; } /* }}} */ @@ -992,221 +1121,202 @@ out: int afr_symlink_unwind (call_frame_t *frame, xlator_t *this) { - call_frame_t *main_frame = NULL; - afr_local_t *local = NULL; + call_frame_t *main_frame = NULL; + afr_local_t *local = NULL; - local = frame->local; + local = frame->local; - LOCK (&frame->lock); - { - if (local->transaction.main_frame) { - main_frame = local->transaction.main_frame; - } - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - - if (main_frame) { - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - local->cont.symlink.inode, - &local->cont.symlink.buf); + LOCK (&frame->lock); + { + if (local->transaction.main_frame) { + main_frame = local->transaction.main_frame; + } + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (symlink, main_frame, + local->op_ret, local->op_errno, + local->cont.dir_fop.inode, + &local->cont.dir_fop.buf, + &local->cont.dir_fop.preparent, + &local->cont.dir_fop.postparent, + NULL); } - return 0; + return 0; } int -afr_symlink_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf) +afr_symlink_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int call_count = -1; - int child_index = -1; - - local = frame->local; - priv = this->private; - - child_index = (long) cookie; - - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); - - if (op_ret != -1) { - local->op_ret = op_ret; - - if (local->success_count == 0) { - local->cont.symlink.buf = *buf; - local->cont.symlink.buf.st_ino = - afr_itransform (buf->st_ino, priv->child_count, - child_index); - - if (priv->read_child >= 0) { - afr_set_read_child (this, inode, - priv->read_child); - } else { - afr_set_read_child (this, inode, - local->read_child_index); - } - } + int call_count = -1; + int child_index = -1; - if (child_index == local->read_child_index) { - if (priv->read_child >= 0) { - afr_set_read_child (this, inode, - priv->read_child); - } else { - afr_set_read_child (this, inode, - local->read_child_index); - } - } + child_index = (long) cookie; - local->cont.symlink.inode = inode; - - local->success_count++; - } - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + LOCK (&frame->lock); + { + __dir_entry_fop_common_cbk (frame, child_index, this, + op_ret, op_errno, inode, buf, + preparent, postparent, NULL, NULL); + } + UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + call_count = afr_frame_return (frame); - if (call_count == 0) { - local->transaction.unwind (frame, this); + if (call_count == 0) + afr_dir_fop_done (frame, this); - local->transaction.resume (frame, this); - } - - return 0; + return 0; } int afr_symlink_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; - int call_count = -1; - int i = 0; + local = frame->local; + priv = this->private; - local = frame->local; - priv = this->private; + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); - call_count = afr_up_children_count (priv->child_count, local->child_up); + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } + local->call_count = call_count; - local->call_count = call_count; + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_symlink_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->symlink, + local->cont.symlink.linkpath, + &local->loc, + local->umask, + local->xdata_req); - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_symlink_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->symlink, - local->cont.symlink.linkpath, - &local->loc); + if (!--call_count) + break; - if (!--call_count) - break; + } + } - } - } - - return 0; + return 0; } int afr_symlink_done (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = frame->local; + afr_local_t * local = frame->local; + + local->transaction.unwind (frame, this); - local->transaction.unwind (frame, this); + AFR_STACK_DESTROY (frame); - AFR_STACK_DESTROY (frame); - - return 0; + return 0; } int afr_symlink (call_frame_t *frame, xlator_t *this, - const char *linkpath, loc_t *loc) + const char *linkpath, loc_t *loc, mode_t umask, dict_t *params) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t * transaction_frame = NULL; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - int ret = -1; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - int op_ret = -1; - int op_errno = 0; + priv = this->private; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + QUORUM_CHECK(symlink,out); - priv = this->private; - - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - ALLOC_OR_GOTO (local, afr_local_t, out); + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - transaction_frame->local = local; - - loc_copy (&local->loc, loc); + loc_copy (&local->loc, loc); LOCK (&priv->read_child_lock); { - local->read_child_index = (++priv->read_child_rr) + local->read_child_index = (++priv->read_child_rr) % (priv->child_count); } UNLOCK (&priv->read_child_lock); - local->cont.symlink.ino = loc->inode->ino; - local->cont.symlink.linkpath = strdup (linkpath); - - local->transaction.fop = afr_symlink_wind; - local->transaction.done = afr_symlink_done; - local->transaction.unwind = afr_symlink_unwind; - - afr_build_parent_loc (&local->transaction.parent_loc, loc); - - local->transaction.main_frame = frame; - local->transaction.basename = AFR_BASENAME (loc->path); - - afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + local->cont.symlink.linkpath = gf_strdup (linkpath); + local->umask = umask; + if (params) + local->xdata_req = dict_ref (params); + + local->op = GF_FOP_SYMLINK; + local->transaction.fop = afr_symlink_wind; + local->transaction.done = afr_symlink_done; + local->transaction.unwind = afr_symlink_unwind; + + ret = afr_build_parent_loc (&local->transaction.parent_loc, loc, + &op_errno); + if (ret) + goto out; + + local->transaction.main_frame = frame; + local->transaction.basename = AFR_BASENAME (loc->path); + int_lock = &local->internal_lock; + + int_lock->lockee_count = 0; + ret = afr_init_entry_lockee (&int_lock->lockee[0], local, + &local->transaction.parent_loc, + local->transaction.basename, + priv->child_count); + if (ret) + goto out; + + int_lock->lockee_count++; + ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL, NULL); - } + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (symlink, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL); + } - return 0; + return 0; } /* }}} */ @@ -1216,194 +1326,231 @@ out: int afr_rename_unwind (call_frame_t *frame, xlator_t *this) { - call_frame_t *main_frame = NULL; - afr_local_t *local = NULL; - - local = frame->local; - - LOCK (&frame->lock); - { - if (local->transaction.main_frame) { - main_frame = local->transaction.main_frame; - } - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); + call_frame_t *main_frame = NULL; + afr_local_t *local = NULL; - if (main_frame) { - local->cont.rename.buf.st_ino = local->cont.rename.ino; + local = frame->local; - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - &local->cont.rename.buf); - } + LOCK (&frame->lock); + { + if (local->transaction.main_frame) { + main_frame = local->transaction.main_frame; + } + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (rename, main_frame, + local->op_ret, local->op_errno, + &local->cont.dir_fop.buf, + &local->cont.dir_fop.preparent, + &local->cont.dir_fop.postparent, + &local->cont.dir_fop.prenewparent, + &local->cont.dir_fop.postnewparent, + NULL); + } - return 0; + return 0; } int -afr_rename_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) +afr_rename_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *buf, + struct iatt *preoldparent, struct iatt *postoldparent, + struct iatt *prenewparent, struct iatt *postnewparent, + dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int call_count = -1; - int child_index = -1; - - local = frame->local; - priv = this->private; - - child_index = (long) cookie; - - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); - - if ((op_ret != -1) && (local->success_count == 0)) { - local->op_ret = op_ret; - - if (buf) { - local->cont.rename.buf = *buf; - local->cont.rename.buf.st_ino = - afr_itransform (buf->st_ino, priv->child_count, - child_index); - } - local->success_count++; - } - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + afr_local_t * local = NULL; + int call_count = -1; + int child_index = -1; - call_count = afr_frame_return (frame); + local = frame->local; - if (call_count == 0) { - local->transaction.unwind (frame, this); - - local->transaction.resume (frame, this); - } - - return 0; -} + child_index = (long) cookie; + LOCK (&frame->lock); + { + if (afr_fop_failed (op_ret, op_errno) && op_errno != ENOTEMPTY) + afr_transaction_fop_failed (frame, this, child_index); + local->op_errno = op_errno; + local->child_errno[child_index] = op_errno; -int32_t -afr_rename_wind (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int i = 0; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_rename_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->rename, - &local->loc, - &local->newloc); - if (!--call_count) - break; - } - } - - return 0; -} + if (op_ret > -1) + __dir_entry_fop_common_cbk (frame, child_index, this, + op_ret, op_errno, NULL, buf, + preoldparent, postoldparent, + prenewparent, postnewparent); + } + UNLOCK (&frame->lock); -int -afr_rename_done (call_frame_t *frame, xlator_t *this) -{ - afr_local_t * local = frame->local; + call_count = afr_frame_return (frame); - local->transaction.unwind (frame, this); + if (call_count == 0) + afr_dir_fop_done (frame, this); - AFR_STACK_DESTROY (frame); - - return 0; + return 0; } -int -afr_rename (call_frame_t *frame, xlator_t *this, - loc_t *oldloc, loc_t *newloc) +int32_t +afr_rename_wind (call_frame_t *frame, xlator_t *this) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t * transaction_frame = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; - int ret = -1; + local = frame->local; + priv = this->private; - int op_ret = -1; - int op_errno = 0; + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_rename_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->rename, + &local->loc, + &local->newloc, NULL); + if (!--call_count) + break; + } + } - ALLOC_OR_GOTO (local, afr_local_t, out); + return 0; +} - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - transaction_frame->local = local; +int +afr_rename_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t * local = frame->local; - loc_copy (&local->loc, oldloc); - loc_copy (&local->newloc, newloc); + local->transaction.unwind (frame, this); - local->cont.rename.ino = oldloc->inode->ino; + AFR_STACK_DESTROY (frame); - local->transaction.fop = afr_rename_wind; - local->transaction.done = afr_rename_done; - local->transaction.unwind = afr_rename_unwind; + return 0; +} - afr_build_parent_loc (&local->transaction.parent_loc, oldloc); - afr_build_parent_loc (&local->transaction.new_parent_loc, newloc); - local->transaction.main_frame = frame; - local->transaction.basename = AFR_BASENAME (oldloc->path); - local->transaction.new_basename = AFR_BASENAME (newloc->path); +int +afr_rename (call_frame_t *frame, xlator_t *this, + loc_t *oldloc, loc_t *newloc, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; + int nlockee = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + QUORUM_CHECK(rename,out); + + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - afr_transaction (transaction_frame, this, AFR_ENTRY_RENAME_TRANSACTION); + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + loc_copy (&local->loc, oldloc); + loc_copy (&local->newloc, newloc); + + local->read_child_index = afr_inode_get_read_ctx (this, oldloc->inode, NULL); + + local->op = GF_FOP_RENAME; + local->transaction.fop = afr_rename_wind; + local->transaction.done = afr_rename_done; + local->transaction.unwind = afr_rename_unwind; + + ret = afr_build_parent_loc (&local->transaction.parent_loc, oldloc, + &op_errno); + if (ret) + goto out; + ret = afr_build_parent_loc (&local->transaction.new_parent_loc, newloc, + &op_errno); + if (ret) + goto out; + + local->transaction.main_frame = frame; + local->transaction.basename = AFR_BASENAME (oldloc->path); + local->transaction.new_basename = AFR_BASENAME (newloc->path); + int_lock = &local->internal_lock; + + int_lock->lockee_count = nlockee = 0; + ret = afr_init_entry_lockee (&int_lock->lockee[nlockee], local, + &local->transaction.new_parent_loc, + local->transaction.new_basename, + priv->child_count); + if (ret) + goto out; + + nlockee++; + ret = afr_init_entry_lockee (&int_lock->lockee[nlockee], local, + &local->transaction.parent_loc, + local->transaction.basename, + priv->child_count); + if (ret) + goto out; + + nlockee++; + if (local->newloc.inode && IA_ISDIR (local->newloc.inode->ia_type)) { + ret = afr_init_entry_lockee (&int_lock->lockee[nlockee], local, + &local->newloc, + NULL, + priv->child_count); + if (ret) + goto out; + + nlockee++; + } + qsort (int_lock->lockee, nlockee, sizeof (*int_lock->lockee), + afr_entry_lockee_cmp); + int_lock->lockee_count = nlockee; + + ret = afr_transaction (transaction_frame, this, AFR_ENTRY_RENAME_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + AFR_STACK_UNWIND (rename, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL, NULL); + } - return 0; + return 0; } /* }}} */ @@ -1413,182 +1560,190 @@ out: int afr_unlink_unwind (call_frame_t *frame, xlator_t *this) { - call_frame_t *main_frame = NULL; - afr_local_t *local = NULL; + call_frame_t *main_frame = NULL; + afr_local_t *local = NULL; - local = frame->local; + local = frame->local; - LOCK (&frame->lock); - { - if (local->transaction.main_frame) { - main_frame = local->transaction.main_frame; - } - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - - if (main_frame) - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno); + LOCK (&frame->lock); + { + if (local->transaction.main_frame) { + main_frame = local->transaction.main_frame; + } + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (unlink, main_frame, + local->op_ret, local->op_errno, + &local->cont.dir_fop.preparent, + &local->cont.dir_fop.postparent, + NULL); + } - return 0; + return 0; } int -afr_unlink_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) +afr_unlink_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int call_count = -1; - int child_index = (long) cookie; - int need_unwind = 0; - - local = frame->local; - priv = this->private; - - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); - - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } - } + afr_local_t * local = NULL; + int call_count = -1; + int child_index = (long) cookie; - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + local = frame->local; - call_count = afr_frame_return (frame); + LOCK (&frame->lock); + { + if (child_index == local->read_child_index) { + local->read_child_returned = _gf_true; + } + __dir_entry_fop_common_cbk (frame, child_index, this, + op_ret, op_errno, NULL, NULL, + preparent, postparent, NULL, NULL); + } + UNLOCK (&frame->lock); - if (call_count == 0) { - local->transaction.unwind (frame, this); + call_count = afr_frame_return (frame); + if (call_count == 0) + afr_dir_fop_done (frame, this); - local->transaction.resume (frame, this); - } - - return 0; + return 0; } int32_t afr_unlink_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int i = 0; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_unlink_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->unlink, - &local->loc); - - if (!--call_count) - break; - } - } - - return 0; -} + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + local = frame->local; + priv = this->private; -int32_t -afr_unlink_done (call_frame_t *frame, xlator_t *this) -{ - afr_local_t * local = frame->local; + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); - local->transaction.unwind (frame, this); + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } - AFR_STACK_DESTROY (frame); - - return 0; -} + local->call_count = call_count; + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_unlink_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->unlink, + &local->loc, local->xflag, + local->xdata_req); -int32_t -afr_unlink (call_frame_t *frame, xlator_t *this, - loc_t *loc) -{ - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t * transaction_frame = NULL; + if (!--call_count) + break; + } + } - int ret = -1; + return 0; +} - int op_ret = -1; - int op_errno = 0; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); +int32_t +afr_unlink_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t * local = frame->local; - priv = this->private; + local->transaction.unwind (frame, this); - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + AFR_STACK_DESTROY (frame); - ALLOC_OR_GOTO (local, afr_local_t, out); + return 0; +} - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - transaction_frame->local = local; +int32_t +afr_unlink (call_frame_t *frame, xlator_t *this, + loc_t *loc, int xflag, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - loc_copy (&local->loc, loc); + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - local->transaction.fop = afr_unlink_wind; - local->transaction.done = afr_unlink_done; - local->transaction.unwind = afr_unlink_unwind; + priv = this->private; - afr_build_parent_loc (&local->transaction.parent_loc, loc); + QUORUM_CHECK(unlink,out); - local->transaction.main_frame = frame; - local->transaction.basename = AFR_BASENAME (loc->path); + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + loc_copy (&local->loc, loc); + local->xflag = xflag; + if (xdata) + local->xdata_req = dict_ref (xdata); + + local->op = GF_FOP_UNLINK; + local->transaction.fop = afr_unlink_wind; + local->transaction.done = afr_unlink_done; + local->transaction.unwind = afr_unlink_unwind; + + ret = afr_build_parent_loc (&local->transaction.parent_loc, loc, + &op_errno); + if (ret) + goto out; + + local->transaction.main_frame = frame; + local->transaction.basename = AFR_BASENAME (loc->path); + int_lock = &local->internal_lock; + + int_lock->lockee_count = 0; + ret = afr_init_entry_lockee (&int_lock->lockee[0], local, + &local->transaction.parent_loc, + local->transaction.basename, + priv->child_count); + if (ret) + goto out; + + int_lock->lockee_count++; + ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (unlink, frame, -1, op_errno, + NULL, NULL, NULL); + } - return 0; + return 0; } /* }}} */ @@ -1600,323 +1755,208 @@ out: int afr_rmdir_unwind (call_frame_t *frame, xlator_t *this) { - call_frame_t *main_frame = NULL; - afr_local_t *local = NULL; - - local = frame->local; + call_frame_t *main_frame = NULL; + afr_local_t *local = NULL; - LOCK (&frame->lock); - { - if (local->transaction.main_frame) { - main_frame = local->transaction.main_frame; - } - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); + local = frame->local; - if (main_frame) - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno); + LOCK (&frame->lock); + { + if (local->transaction.main_frame) { + main_frame = local->transaction.main_frame; + } + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (rmdir, main_frame, + local->op_ret, local->op_errno, + &local->cont.dir_fop.preparent, + &local->cont.dir_fop.postparent, + NULL); + } - return 0; + return 0; } int -afr_rmdir_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) +afr_rmdir_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int call_count = -1; - int child_index = (long) cookie; - int need_unwind = 0; + afr_local_t * local = NULL; + int call_count = -1; + int child_index = (long) cookie; + int read_child = 0; - local = frame->local; - priv = this->private; + local = frame->local; - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); - - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - } - local->success_count++; - - if (local->success_count == priv->wait_count) - need_unwind = 1; - } - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + LOCK (&frame->lock); + { + if (child_index == read_child) { + local->read_child_returned = _gf_true; + } + if (afr_fop_failed (op_ret, op_errno) && (op_errno != ENOTEMPTY)) + afr_transaction_fop_failed (frame, this, child_index); + local->op_errno = op_errno; + local->child_errno[child_index] = op_errno; + if (op_ret > -1) + __dir_entry_fop_common_cbk (frame, child_index, this, + op_ret, op_errno, NULL, NULL, + preparent, postparent, NULL, + NULL); - call_count = afr_frame_return (frame); + } + UNLOCK (&frame->lock); - if (call_count == 0) { - local->transaction.unwind (frame, this); + call_count = afr_frame_return (frame); + if (call_count == 0) + afr_dir_fop_done (frame, this); - local->transaction.resume (frame, this); - } - - return 0; + return 0; } int afr_rmdir_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int i = 0; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_rmdir_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->rmdir, - &local->loc); - - if (!--call_count) - break; - } - } - - return 0; -} - - -int -afr_rmdir_done (call_frame_t *frame, xlator_t *this) -{ - afr_local_t * local = frame->local; - - local->transaction.unwind (frame, this); - - AFR_STACK_DESTROY (frame); - - return 0; -} - - -int -afr_rmdir (call_frame_t *frame, xlator_t *this, - loc_t *loc) -{ - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t * transaction_frame = NULL; - - int ret = -1; - - int op_ret = -1; - int op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - transaction_frame->local = local; - - loc_copy (&local->loc, loc); - - local->transaction.fop = afr_rmdir_wind; - local->transaction.done = afr_rmdir_done; - local->transaction.unwind = afr_rmdir_unwind; - - afr_build_parent_loc (&local->transaction.parent_loc, loc); - - local->transaction.main_frame = frame; - local->transaction.basename = AFR_BASENAME (loc->path); - - afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); - - op_ret = 0; -out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - - return 0; -} - -/* }}} */ - -/* {{{ setdents */ - -int32_t -afr_setdents_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; - int call_count = -1; - int child_index = (long) cookie; + local = frame->local; + priv = this->private; - local = frame->local; - priv = this->private; + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } - if ((op_ret != -1) && (local->success_count == 0)) { - local->op_ret = op_ret; - local->success_count++; - } + local->call_count = call_count; - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_rmdir_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->rmdir, + &local->loc, local->cont.rmdir.flags, + NULL); - call_count = afr_frame_return (frame); + if (!--call_count) + break; + } + } - if (call_count == 0) { - local->transaction.resume (frame, this); - } - - return 0; + return 0; } -int32_t -afr_setdents_wind (call_frame_t *frame, xlator_t *this) +int +afr_rmdir_done (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int i = 0; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_setdents_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->setdents, - local->fd, local->cont.setdents.flags, - local->cont.setdents.entries, - local->cont.setdents.count); - - if (!--call_count) - break; - } - } - - return 0; -} + afr_local_t * local = frame->local; + local->transaction.unwind (frame, this); -int32_t -afr_setdents_done (call_frame_t *frame, xlator_t *this) -{ - afr_local_t * local = frame->local; + AFR_STACK_DESTROY (frame); - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno); - - return 0; + return 0; } -int32_t -afr_setdents (call_frame_t *frame, xlator_t *this, - fd_t *fd, int32_t flags, dir_entry_t *entries, int32_t count) +int +afr_rmdir (call_frame_t *frame, xlator_t *this, + loc_t *loc, int flags, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - - int ret = -1; - - int op_ret = -1; - int op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - frame->local = local; - - local->fd = fd_ref (fd); - - local->cont.setdents.flags = flags; - local->cont.setdents.entries = entries; - local->cont.setdents.count = count; - - local->transaction.fop = afr_setdents_wind; - local->transaction.done = afr_setdents_done; - - local->transaction.basename = NULL; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; + int nlockee = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + QUORUM_CHECK(rmdir,out); + + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - afr_transaction (frame, this, AFR_ENTRY_TRANSACTION); + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + local->cont.rmdir.flags = flags; + loc_copy (&local->loc, loc); + + local->op = GF_FOP_RMDIR; + local->transaction.fop = afr_rmdir_wind; + local->transaction.done = afr_rmdir_done; + local->transaction.unwind = afr_rmdir_unwind; + + ret = afr_build_parent_loc (&local->transaction.parent_loc, loc, + &op_errno); + if (ret) + goto out; + + local->transaction.main_frame = frame; + local->transaction.basename = AFR_BASENAME (loc->path); + int_lock = &local->internal_lock; + + int_lock->lockee_count = nlockee = 0; + ret = afr_init_entry_lockee (&int_lock->lockee[nlockee], local, + &local->transaction.parent_loc, + local->transaction.basename, + priv->child_count); + if (ret) + goto out; + + nlockee++; + ret = afr_init_entry_lockee (&int_lock->lockee[nlockee], local, + &local->loc, + NULL, + priv->child_count); + if (ret) + goto out; + + nlockee++; + qsort (int_lock->lockee, nlockee, sizeof (*int_lock->lockee), + afr_entry_lockee_cmp); + int_lock->lockee_count = nlockee; + + ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (rmdir, frame, -1, op_errno, NULL, NULL, NULL); + } - return 0; + return 0; } /* }}} */ diff --git a/xlators/cluster/afr/src/afr-dir-write.h b/xlators/cluster/afr/src/afr-dir-write.h index 76b4b60fa..02f0a3682 100644 --- a/xlators/cluster/afr/src/afr-dir-write.h +++ b/xlators/cluster/afr/src/afr-dir-write.h @@ -1,20 +1,11 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef __DIR_WRITE_H__ @@ -22,38 +13,35 @@ int32_t afr_create (call_frame_t *frame, xlator_t *this, - loc_t *loc, int32_t flags, mode_t mode, fd_t *fd); + loc_t *loc, int32_t flags, mode_t mode, + mode_t umask, fd_t *fd, dict_t *xdata); int32_t afr_mknod (call_frame_t *frame, xlator_t *this, - loc_t *loc, mode_t mode, dev_t dev); + loc_t *loc, mode_t mode, dev_t dev, mode_t umask, dict_t *xdata); int32_t afr_mkdir (call_frame_t *frame, xlator_t *this, - loc_t *loc, mode_t mode); + loc_t *loc, mode_t mode, mode_t umask, dict_t *xdata); int32_t afr_unlink (call_frame_t *frame, xlator_t *this, - loc_t *loc); + loc_t *loc, int xflag, dict_t *xdata); int32_t afr_rmdir (call_frame_t *frame, xlator_t *this, - loc_t *loc); + loc_t *loc, int flags, dict_t *xdata); int32_t afr_link (call_frame_t *frame, xlator_t *this, - loc_t *oldloc, loc_t *newloc); + loc_t *oldloc, loc_t *newloc, dict_t *xdata); int32_t afr_rename (call_frame_t *frame, xlator_t *this, - loc_t *oldloc, loc_t *newloc); + loc_t *oldloc, loc_t *newloc, dict_t *xdata); -int32_t +int afr_symlink (call_frame_t *frame, xlator_t *this, - const char *linkpath, loc_t *oldloc); - -int32_t -afr_setdents (call_frame_t *frame, xlator_t *this, - fd_t *fd, int32_t flags, dir_entry_t *entries, int32_t count); + const char *linkpath, loc_t *oldloc, mode_t umask, dict_t *params); #endif /* __DIR_WRITE_H__ */ diff --git a/xlators/cluster/afr/src/afr-inode-read.c b/xlators/cluster/afr/src/afr-inode-read.c index d2811acf0..e06e3b2f2 100644 --- a/xlators/cluster/afr/src/afr-inode-read.c +++ b/xlators/cluster/afr/src/afr-inode-read.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ @@ -44,9 +35,6 @@ #include "compat-errno.h" #include "compat.h" -#include "afr.h" - - /** * Common algorithm for inode read calls: * @@ -61,114 +49,115 @@ int32_t afr_access_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno) + xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - xlator_t ** children = NULL; - - int unwind = 1; - int last_tried = -1; - int this_try = -1; - int read_child = -1; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + xlator_t ** children = NULL; + int unwind = 1; + int32_t *last_index = NULL; + int32_t next_call_child = -1; + int32_t read_child = -1; + int32_t *fresh_children = NULL; - priv = this->private; - children = priv->children; + priv = this->private; + children = priv->children; - local = frame->local; + local = frame->local; read_child = (long) cookie; - if (op_ret == -1) { - retry: - last_tried = local->cont.access.last_tried; - - if (all_tried (last_tried, priv->child_count)) { - goto out; - } - this_try = ++local->cont.access.last_tried; - - if (this_try == read_child) { - goto retry; - } + if (op_ret == -1) { + last_index = &local->cont.access.last_index; + fresh_children = local->fresh_children; + next_call_child = afr_next_call_child (fresh_children, + local->child_up, + priv->child_count, + last_index, read_child); + if (next_call_child < 0) + goto out; - unwind = 0; + unwind = 0; - STACK_WIND_COOKIE (frame, afr_access_cbk, - (void *) (long) read_child, - children[this_try], - children[this_try]->fops->access, - &local->loc, local->cont.access.mask); - } + STACK_WIND_COOKIE (frame, afr_access_cbk, + (void *) (long) read_child, + children[next_call_child], + children[next_call_child]->fops->access, + &local->loc, local->cont.access.mask, + NULL); + } out: - if (unwind) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } + if (unwind) { + AFR_STACK_UNWIND (access, frame, op_ret, op_errno, xdata); + } - return 0; + return 0; } int32_t -afr_access (call_frame_t *frame, xlator_t *this, - loc_t *loc, int32_t mask) +afr_access (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t mask, + dict_t *xdata) { - afr_private_t * priv = NULL; - xlator_t ** children = NULL; - int call_child = 0; - afr_local_t *local = NULL; - + afr_private_t *priv = NULL; + xlator_t **children = NULL; + int call_child = 0; + afr_local_t *local = NULL; + int32_t op_errno = 0; int32_t read_child = -1; + int ret = -1; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + priv = this->private; + VALIDATE_OR_GOTO (priv->children, out); - priv = this->private; - VALIDATE_OR_GOTO (priv->children, out); + children = priv->children; - children = priv->children; + AFR_SBRAIN_CHECK_LOC (loc, out); - ALLOC_OR_GOTO (local, afr_local_t, out); + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; - read_child = afr_read_child (this, loc->inode); - - if (read_child >= 0) { - call_child = read_child; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - local->cont.access.last_tried = -1; + local->fresh_children = afr_children_create (priv->child_count); + if (!local->fresh_children) { + op_errno = ENOMEM; + goto out; + } - } else { - call_child = afr_first_up_child (priv); - if (call_child == -1) { - op_errno = ENOTCONN; - gf_log (this->name, GF_LOG_DEBUG, - "no child is up"); - goto out; - } - local->cont.access.last_tried = call_child; + read_child = afr_inode_get_read_ctx (this, loc->inode, + local->fresh_children); + ret = afr_get_call_child (this, local->child_up, read_child, + local->fresh_children, + &call_child, + &local->cont.access.last_index); + if (ret < 0) { + op_errno = -ret; + goto out; } - loc_copy (&local->loc, loc); - local->cont.access.mask = mask; + loc_copy (&local->loc, loc); + local->cont.access.mask = mask; - STACK_WIND_COOKIE (frame, afr_access_cbk, - (void *) (long) call_child, - children[call_child], children[call_child]->fops->access, - loc, mask); + STACK_WIND_COOKIE (frame, afr_access_cbk, + (void *) (long) call_child, + children[call_child], + children[call_child]->fops->access, + loc, mask, xdata); - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - return 0; + if (ret < 0) + AFR_STACK_UNWIND (access, frame, -1, op_errno, NULL); + return 0; } @@ -178,485 +167,1629 @@ out: int32_t afr_stat_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) + xlator_t *this, int32_t op_ret, int32_t op_errno, + struct iatt *buf, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - xlator_t ** children = NULL; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + xlator_t ** children = NULL; + int unwind = 1; + int32_t *last_index = NULL; + int32_t next_call_child = -1; + int32_t read_child = -1; + int32_t *fresh_children = NULL; + + priv = this->private; + children = priv->children; - int unwind = 1; - int last_tried = -1; - int this_try = -1; - int read_child = -1; + read_child = (long) cookie; - priv = this->private; - children = priv->children; + local = frame->local; - read_child = (long) cookie; + if (op_ret == -1) { + last_index = &local->cont.stat.last_index; + fresh_children = local->fresh_children; + next_call_child = afr_next_call_child (fresh_children, + local->child_up, + priv->child_count, + last_index, read_child); + if (next_call_child < 0) + goto out; - local = frame->local; + unwind = 0; - if (op_ret == -1) { - retry: - last_tried = local->cont.stat.last_tried; + STACK_WIND_COOKIE (frame, afr_stat_cbk, + (void *) (long) read_child, + children[next_call_child], + children[next_call_child]->fops->stat, + &local->loc, NULL); + } - if (all_tried (last_tried, priv->child_count)) { - goto out; - } - this_try = ++local->cont.stat.last_tried; +out: + if (unwind) { + AFR_STACK_UNWIND (stat, frame, op_ret, op_errno, buf, xdata); + } - if (this_try == read_child) { - goto retry; - } + return 0; +} + + +int32_t +afr_stat (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + xlator_t **children = NULL; + int call_child = 0; + int32_t op_errno = 0; + int32_t read_child = -1; + int ret = -1; - unwind = 0; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - STACK_WIND_COOKIE (frame, afr_stat_cbk, - (void *) (long) read_child, - children[this_try], - children[this_try]->fops->stat, - &local->loc); - } + priv = this->private; + VALIDATE_OR_GOTO (priv->children, out); + children = priv->children; + + AFR_SBRAIN_CHECK_LOC (loc, out); + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + local->fresh_children = afr_children_create (priv->child_count); + if (!local->fresh_children) { + op_errno = ENOMEM; + goto out; + } + + read_child = afr_inode_get_read_ctx (this, loc->inode, + local->fresh_children); + ret = afr_get_call_child (this, local->child_up, read_child, + local->fresh_children, + &call_child, + &local->cont.stat.last_index); + if (ret < 0) { + op_errno = -ret; + goto out; + } + loc_copy (&local->loc, loc); + + STACK_WIND_COOKIE (frame, afr_stat_cbk, (void *) (long) call_child, + children[call_child], + children[call_child]->fops->stat, + loc, xdata); + + ret = 0; out: - if (unwind) { - if (op_ret != -1) - buf->st_ino = local->cont.stat.ino; + if (ret < 0) + AFR_STACK_UNWIND (stat, frame, -1, op_errno, NULL, NULL); + + return 0; +} + - AFR_STACK_UNWIND (frame, op_ret, op_errno, buf); - } +/* }}} */ + +/* {{{ fstat */ - return 0; +int32_t +afr_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *buf, + dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + xlator_t **children = NULL; + int unwind = 1; + int32_t *last_index = NULL; + int32_t next_call_child = -1; + int32_t read_child = -1; + int32_t *fresh_children = NULL; + + priv = this->private; + children = priv->children; + + local = frame->local; + + read_child = (long) cookie; + + if (op_ret == -1) { + last_index = &local->cont.fstat.last_index; + fresh_children = local->fresh_children; + next_call_child = afr_next_call_child (fresh_children, + local->child_up, + priv->child_count, + last_index, read_child); + if (next_call_child < 0) + goto out; + + unwind = 0; + + STACK_WIND_COOKIE (frame, afr_fstat_cbk, + (void *) (long) read_child, + children[next_call_child], + children[next_call_child]->fops->fstat, + local->fd, NULL); + } + +out: + if (unwind) { + AFR_STACK_UNWIND (fstat, frame, op_ret, op_errno, buf, xdata); + } + + return 0; } int32_t -afr_stat (call_frame_t *frame, xlator_t *this, - loc_t *loc) +afr_fstat (call_frame_t *frame, xlator_t *this, + fd_t *fd, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - xlator_t ** children = NULL; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + xlator_t **children = NULL; + int call_child = 0; + int32_t op_errno = 0; + int32_t read_child = 0; + int ret = -1; - int32_t read_child = -1; - int call_child = 0; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + VALIDATE_OR_GOTO (this->private, out); - int32_t op_ret = -1; - int32_t op_errno = 0; + priv = this->private; + VALIDATE_OR_GOTO (priv->children, out); - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + children = priv->children; - priv = this->private; - VALIDATE_OR_GOTO (priv->children, out); + VALIDATE_OR_GOTO (fd->inode, out); - children = priv->children; + AFR_SBRAIN_CHECK_FD (fd, out); - ALLOC_OR_GOTO (local, afr_local_t, out); + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; - frame->local = local; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - read_child = afr_read_child (this, loc->inode); + local->fresh_children = afr_children_create (priv->child_count); + if (!local->fresh_children) { + op_errno = ENOMEM; + goto out; + } - if (read_child >= 0) { - call_child = read_child; + read_child = afr_inode_get_read_ctx (this, fd->inode, + local->fresh_children); - local->cont.stat.last_tried = -1; - } else { - call_child = afr_first_up_child (priv); - if (call_child == -1) { - op_errno = ENOTCONN; - gf_log (this->name, GF_LOG_DEBUG, - "no child is up"); - goto out; - } - local->cont.stat.last_tried = call_child; - } + ret = afr_get_call_child (this, local->child_up, read_child, + local->fresh_children, + &call_child, + &local->cont.fstat.last_index); + if (ret < 0) { + op_errno = -ret; + goto out; + } - loc_copy (&local->loc, loc); + local->fd = fd_ref (fd); - local->cont.stat.ino = loc->inode->ino; + afr_open_fd_fix (fd, this); - STACK_WIND_COOKIE (frame, afr_stat_cbk, (void *) (long) call_child, - children[call_child], - children[call_child]->fops->stat, - loc); + STACK_WIND_COOKIE (frame, afr_fstat_cbk, (void *) (long) call_child, + children[call_child], + children[call_child]->fops->fstat, + fd, xdata); - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + if (ret < 0) + AFR_STACK_UNWIND (fstat, frame, -1, op_errno, NULL, NULL); - return 0; + return 0; } - /* }}} */ -/* {{{ fstat */ +/* {{{ readlink */ int32_t -afr_fstat_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) +afr_readlink_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + const char *buf, struct iatt *sbuf, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - xlator_t ** children = NULL; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + xlator_t ** children = NULL; + int unwind = 1; + int32_t *last_index = NULL; + int32_t next_call_child = -1; + int32_t read_child = -1; + int32_t *fresh_children = NULL; - int unwind = 1; - int last_tried = -1; - int this_try = -1; - int read_child = -1; + priv = this->private; + children = priv->children; - priv = this->private; - children = priv->children; + local = frame->local; - local = frame->local; + read_child = (long) cookie; - read_child = (long) cookie; + if (op_ret == -1) { + last_index = &local->cont.readlink.last_index; + fresh_children = local->fresh_children; + next_call_child = afr_next_call_child (fresh_children, + local->child_up, + priv->child_count, + last_index, read_child); + if (next_call_child < 0) + goto out; - if (op_ret == -1) { - retry: - last_tried = local->cont.fstat.last_tried; + unwind = 0; + STACK_WIND_COOKIE (frame, afr_readlink_cbk, + (void *) (long) read_child, + children[next_call_child], + children[next_call_child]->fops->readlink, + &local->loc, + local->cont.readlink.size, NULL); + } - if (all_tried (last_tried, priv->child_count)) { - goto out; - } - this_try = ++local->cont.fstat.last_tried; +out: + if (unwind) { + AFR_STACK_UNWIND (readlink, frame, op_ret, op_errno, buf, sbuf, + xdata); + } - if (this_try == read_child) { - goto retry; - } + return 0; +} - unwind = 0; - STACK_WIND_COOKIE (frame, afr_fstat_cbk, - (void *) (long) read_child, - children[this_try], - children[this_try]->fops->fstat, - local->fd); - } +int32_t +afr_readlink (call_frame_t *frame, xlator_t *this, + loc_t *loc, size_t size, dict_t *xdata) +{ + afr_private_t *priv = NULL; + xlator_t **children = NULL; + int call_child = 0; + afr_local_t *local = NULL; + int32_t op_errno = 0; + int32_t read_child = -1; + int ret = -1; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + VALIDATE_OR_GOTO (priv->children, out); + + children = priv->children; + AFR_SBRAIN_CHECK_LOC (loc, out); + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + local->fresh_children = afr_children_create (priv->child_count); + if (!local->fresh_children) { + op_errno = ENOMEM; + goto out; + } + read_child = afr_inode_get_read_ctx (this, loc->inode, + local->fresh_children); + ret = afr_get_call_child (this, local->child_up, read_child, + local->fresh_children, + &call_child, + &local->cont.readlink.last_index); + if (ret < 0) { + op_errno = -ret; + goto out; + } + + loc_copy (&local->loc, loc); + + local->cont.readlink.size = size; + + STACK_WIND_COOKIE (frame, afr_readlink_cbk, + (void *) (long) call_child, + children[call_child], + children[call_child]->fops->readlink, + loc, size, xdata); + + ret = 0; out: - if (unwind) { - if (op_ret != -1) - buf->st_ino = local->cont.fstat.ino; + if (ret < 0) + AFR_STACK_UNWIND (readlink, frame, -1, op_errno, NULL, NULL, NULL); + return 0; +} + + +/* }}} */ + +/* {{{ getxattr */ + +struct _xattr_key { + char *key; + struct list_head list; +}; + + +int +__gather_xattr_keys (dict_t *dict, char *key, data_t *value, + void *data) +{ + struct list_head * list = data; + struct _xattr_key * xkey = NULL; + + if (!strncmp (key, AFR_XATTR_PREFIX, + strlen (AFR_XATTR_PREFIX))) { + + xkey = GF_CALLOC (1, sizeof (*xkey), gf_afr_mt_xattr_key); + if (!xkey) + return -1; + + xkey->key = key; + INIT_LIST_HEAD (&xkey->list); + + list_add_tail (&xkey->list, list); + } + return 0; +} + - AFR_STACK_UNWIND (frame, op_ret, op_errno, buf); - } +void +__filter_xattrs (dict_t *dict) +{ + struct list_head keys = {0,}; + struct _xattr_key *key = NULL; + struct _xattr_key *tmp = NULL; + + INIT_LIST_HEAD (&keys); + + dict_foreach (dict, __gather_xattr_keys, + (void *) &keys); - return 0; + list_for_each_entry_safe (key, tmp, &keys, list) { + dict_del (dict, key->key); + + list_del_init (&key->list); + + GF_FREE (key); + } } + int32_t -afr_fstat (call_frame_t *frame, xlator_t *this, - fd_t *fd) +afr_getxattr_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - xlator_t ** children = NULL; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + xlator_t ** children = NULL; + int unwind = 1; + int32_t *last_index = NULL; + int32_t next_call_child = -1; + int32_t read_child = -1; + int32_t *fresh_children = NULL; - int call_child = 0; - int32_t read_child = -1; + priv = this->private; + children = priv->children; - int32_t op_ret = -1; - int32_t op_errno = 0; + local = frame->local; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (fd, out); - VALIDATE_OR_GOTO (this->private, out); + read_child = (long) cookie; - priv = this->private; - VALIDATE_OR_GOTO (priv->children, out); + if (op_ret == -1) { + last_index = &local->cont.getxattr.last_index; + fresh_children = local->fresh_children; + next_call_child = afr_next_call_child (fresh_children, + local->child_up, + priv->child_count, + last_index, read_child); + if (next_call_child < 0) + goto out; - children = priv->children; + unwind = 0; + STACK_WIND_COOKIE (frame, afr_getxattr_cbk, + (void *) (long) read_child, + children[next_call_child], + children[next_call_child]->fops->getxattr, + &local->loc, + local->cont.getxattr.name, + NULL); + } - ALLOC_OR_GOTO (local, afr_local_t, out); +out: + if (unwind) { + if (op_ret >= 0 && dict) + __filter_xattrs (dict); - frame->local = local; + AFR_STACK_UNWIND (getxattr, frame, op_ret, op_errno, dict, xdata); + } - VALIDATE_OR_GOTO (fd->inode, out); + return 0; +} - read_child = afr_read_child (this, fd->inode); +int32_t +afr_getxattr_unwind (call_frame_t *frame, int op_ret, int op_errno, + dict_t *dict, dict_t *xdata) - if (read_child >= 0) { - call_child = read_child; +{ + AFR_STACK_UNWIND (getxattr, frame, op_ret, op_errno, dict, xdata); + return 0; +} - local->cont.fstat.last_tried = -1; - } else { - call_child = afr_first_up_child (priv); +int32_t +afr_fgetxattr_clrlk_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + xlator_t **children = NULL; + dict_t *xattr = NULL; + char *tmp_report = NULL; + char lk_summary[1024] = {0,}; + int serz_len = 0; + int32_t callcnt = 0; + long int cky = 0; + int ret = 0; + + priv = this->private; + children = priv->children; + + local = frame->local; + cky = (long) cookie; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + if (op_ret == -1) + local->child_errno[cky] = op_errno; + + if (!local->dict) + local->dict = dict_new (); + if (local->dict) { + ret = dict_get_str (dict, local->cont.getxattr.name, + &tmp_report); + if (ret) + goto unlock; + ret = dict_set_dynstr (local->dict, + children[cky]->name, + gf_strdup (tmp_report)); + if (ret) + goto unlock; + } + } +unlock: + UNLOCK (&frame->lock); + + if (!callcnt) { + xattr = dict_new (); + if (!xattr) { + op_ret = -1; + op_errno = ENOMEM; + goto unwind; + } + ret = dict_serialize_value_with_delim (local->dict, + lk_summary, + &serz_len, '\n'); + if (ret) { + op_ret = -1; + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, + "Error serializing dictionary"); + goto unwind; + } + if (serz_len == -1) + snprintf (lk_summary, sizeof (lk_summary), + "No locks cleared."); + ret = dict_set_dynstr (xattr, local->cont.getxattr.name, + gf_strdup (lk_summary)); + if (ret) { + op_ret = -1; + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, + "Error setting dictionary"); + goto unwind; + } - if (call_child == -1) { - op_errno = ENOTCONN; - gf_log (this->name, GF_LOG_DEBUG, - "no child is up"); - goto out; - } + unwind: + // Updating child_errno with more recent 'events' + local->child_errno[cky] = op_errno; + op_errno = afr_resultant_errno_get (NULL, local->child_errno, + priv->child_count); + AFR_STACK_UNWIND (fgetxattr, frame, op_ret, op_errno, xattr, + xdata); - local->cont.fstat.last_tried = call_child; + if (xattr) + dict_unref (xattr); } - local->cont.fstat.ino = fd->inode->ino; - local->fd = fd_ref (fd); + return ret; +} - STACK_WIND_COOKIE (frame, afr_fstat_cbk, (void *) (long) call_child, - children[call_child], - children[call_child]->fops->fstat, - fd); +int32_t +afr_getxattr_clrlk_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + xlator_t **children = NULL; + dict_t *xattr = NULL; + char *tmp_report = NULL; + char lk_summary[1024] = {0,}; + int serz_len = 0; + int32_t callcnt = 0; + long int cky = 0; + int ret = 0; + + priv = this->private; + children = priv->children; + + local = frame->local; + cky = (long) cookie; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + if (op_ret == -1) + local->child_errno[cky] = op_errno; + + if (!local->dict) + local->dict = dict_new (); + if (local->dict) { + ret = dict_get_str (dict, local->cont.getxattr.name, + &tmp_report); + if (ret) + goto unlock; + ret = dict_set_dynstr (local->dict, + children[cky]->name, + gf_strdup (tmp_report)); + if (ret) + goto unlock; + } + } +unlock: + UNLOCK (&frame->lock); + + if (!callcnt) { + xattr = dict_new (); + if (!xattr) { + op_ret = -1; + op_errno = ENOMEM; + goto unwind; + } + ret = dict_serialize_value_with_delim (local->dict, + lk_summary, + &serz_len, '\n'); + if (ret) { + op_ret = -1; + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, + "Error serializing dictionary"); + goto unwind; + } + if (serz_len == -1) + snprintf (lk_summary, sizeof (lk_summary), + "No locks cleared."); + ret = dict_set_dynstr (xattr, local->cont.getxattr.name, + gf_strdup (lk_summary)); + if (ret) { + op_ret = -1; + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, + "Error setting dictionary"); + goto unwind; + } - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + unwind: + // Updating child_errno with more recent 'events' + local->child_errno[cky] = op_errno; + op_errno = afr_resultant_errno_get (NULL, local->child_errno, + priv->child_count); + AFR_STACK_UNWIND (getxattr, frame, op_ret, op_errno, xattr, xdata); + + if (xattr) + dict_unref (xattr); + } - return 0; + return ret; } -/* }}} */ +/** + * node-uuid cbk uses next child querying mechanism + */ +int32_t +afr_getxattr_node_uuid_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + xlator_t **children = NULL; + int unwind = 1; + int curr_call_child = 0; + + priv = this->private; + children = priv->children; + + local = frame->local; + + if (op_ret == -1) { /** query the _next_ child */ + + /** + * _current_ becomes _next_ + * If done with all childs and yet no success; give up ! + */ + curr_call_child = (int) ((long)cookie); + if (++curr_call_child == priv->child_count) + goto unwind; + + gf_log (this->name, GF_LOG_WARNING, + "op_ret (-1): Re-querying afr-child (%d/%d)", + curr_call_child, priv->child_count); + + unwind = 0; + STACK_WIND_COOKIE (frame, afr_getxattr_node_uuid_cbk, + (void *) (long) curr_call_child, + children[curr_call_child], + children[curr_call_child]->fops->getxattr, + &local->loc, + local->cont.getxattr.name, + NULL); + } -/* {{{ readlink */ + unwind: + if (unwind) + AFR_STACK_UNWIND (getxattr, frame, op_ret, op_errno, dict, + NULL); + + return 0; +} int32_t -afr_readlink_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - const char *buf) +afr_getxattr_lockinfo_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - xlator_t ** children = NULL; + int call_cnt = 0, len = 0; + char *lockinfo_buf = NULL; + dict_t *lockinfo = NULL, *newdict = NULL; + afr_local_t *local = NULL; - int unwind = 1; - int last_tried = -1; - int this_try = -1; - int read_child = -1; + LOCK (&frame->lock); + { + local = frame->local; - priv = this->private; - children = priv->children; + call_cnt = --local->call_count; - local = frame->local; + if ((op_ret < 0) || (!dict && !xdata)) { + goto unlock; + } - read_child = (long) cookie; + if (xdata) { + if (!local->xdata_rsp) { + local->xdata_rsp = dict_new (); + if (!local->xdata_rsp) { + local->op_ret = -1; + local->op_errno = ENOMEM; + goto unlock; + } + } + } - if (op_ret == -1) { - retry: - last_tried = local->cont.readlink.last_tried; + if (!dict) { + goto unlock; + } - if (all_tried (last_tried, priv->child_count)) { - goto out; - } - this_try = ++local->cont.readlink.last_tried; + op_ret = dict_get_ptr_and_len (dict, GF_XATTR_LOCKINFO_KEY, + (void **)&lockinfo_buf, &len); - if (this_try == read_child) { - goto retry; + if (!lockinfo_buf) { + goto unlock; } - unwind = 0; - STACK_WIND_COOKIE (frame, afr_readlink_cbk, - (void *) (long) read_child, - children[this_try], - children[this_try]->fops->readlink, - &local->loc, - local->cont.readlink.size); - } + if (!local->dict) { + local->dict = dict_new (); + if (!local->dict) { + local->op_ret = -1; + local->op_errno = ENOMEM; + goto unlock; + } + } + } +unlock: + UNLOCK (&frame->lock); + + if (lockinfo_buf != NULL) { + lockinfo = dict_new (); + if (lockinfo == NULL) { + local->op_ret = -1; + local->op_errno = ENOMEM; + } else { + op_ret = dict_unserialize (lockinfo_buf, len, + &lockinfo); + + if (lockinfo && local->dict) { + dict_copy (lockinfo, local->dict); + } + } + } -out: - if (unwind) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, buf); - } + if (xdata && local->xdata_rsp) { + dict_copy (xdata, local->xdata_rsp); + } - return 0; -} + if (!call_cnt) { + newdict = dict_new (); + if (!newdict) { + local->op_ret = -1; + local->op_errno = ENOMEM; + goto unwind; + } + + len = dict_serialized_length (local->dict); + if (len == 0) { + goto unwind; + } + lockinfo_buf = GF_CALLOC (1, len, gf_common_mt_char); + if (!lockinfo_buf) { + local->op_ret = -1; + local->op_errno = ENOMEM; + goto unwind; + } + + op_ret = dict_serialize (local->dict, lockinfo_buf); + if (op_ret < 0) { + local->op_ret = -1; + local->op_errno = -op_ret; + } + + op_ret = dict_set_dynptr (newdict, GF_XATTR_LOCKINFO_KEY, + (void *)lockinfo_buf, len); + if (op_ret < 0) { + local->op_ret = -1; + local->op_errno = -op_ret; + goto unwind; + } + + unwind: + AFR_STACK_UNWIND (getxattr, frame, op_ret, + op_errno, newdict, + local->xdata_rsp); + } + + dict_unref (lockinfo); + + return 0; +} int32_t -afr_readlink (call_frame_t *frame, xlator_t *this, - loc_t *loc, size_t size) +afr_fgetxattr_lockinfo_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) { - afr_private_t * priv = NULL; - xlator_t ** children = NULL; - int call_child = 0; - afr_local_t *local = NULL; + int call_cnt = 0, len = 0; + char *lockinfo_buf = NULL; + dict_t *lockinfo = NULL, *newdict = NULL; + afr_local_t *local = NULL; - int32_t read_child = -1; + LOCK (&frame->lock); + { + local = frame->local; - int32_t op_ret = -1; - int32_t op_errno = 0; + call_cnt = --local->call_count; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + if ((op_ret < 0) || (!dict && !xdata)) { + goto unlock; + } - priv = this->private; - VALIDATE_OR_GOTO (priv->children, out); + if (xdata) { + if (!local->xdata_rsp) { + local->xdata_rsp = dict_new (); + if (!local->xdata_rsp) { + local->op_ret = -1; + local->op_errno = ENOMEM; + goto unlock; + } + } + } - children = priv->children; + if (!dict) { + goto unlock; + } - ALLOC_OR_GOTO (local, afr_local_t, out); + op_ret = dict_get_ptr_and_len (dict, GF_XATTR_LOCKINFO_KEY, + (void **)&lockinfo_buf, &len); - frame->local = local; + if (!lockinfo_buf) { + goto unlock; + } - read_child = afr_read_child (this, loc->inode); + if (!local->dict) { + local->dict = dict_new (); + if (!local->dict) { + local->op_ret = -1; + local->op_errno = ENOMEM; + goto unlock; + } + } + } +unlock: + UNLOCK (&frame->lock); + + if (lockinfo_buf != NULL) { + lockinfo = dict_new (); + if (lockinfo == NULL) { + local->op_ret = -1; + local->op_errno = ENOMEM; + } else { + op_ret = dict_unserialize (lockinfo_buf, len, + &lockinfo); + + if (lockinfo && local->dict) { + dict_copy (lockinfo, local->dict); + } + } + } - if (read_child >= 0) { - call_child = read_child; + if (xdata && local->xdata_rsp) { + dict_copy (xdata, local->xdata_rsp); + } - local->cont.readlink.last_tried = -1; + if (!call_cnt) { + newdict = dict_new (); + if (!newdict) { + local->op_ret = -1; + local->op_errno = ENOMEM; + goto unwind; + } - } else { - call_child = afr_first_up_child (priv); + len = dict_serialized_length (local->dict); + if (len <= 0) { + goto unwind; + } - if (call_child == -1) { - op_errno = ENOTCONN; - gf_log (this->name, GF_LOG_DEBUG, - "no child is up"); - goto out; + lockinfo_buf = GF_CALLOC (1, len, gf_common_mt_char); + if (!lockinfo_buf) { + local->op_ret = -1; + local->op_errno = ENOMEM; + goto unwind; } - local->cont.readlink.last_tried = call_child; + op_ret = dict_serialize (local->dict, lockinfo_buf); + if (op_ret < 0) { + local->op_ret = -1; + local->op_errno = -op_ret; + } + + op_ret = dict_set_dynptr (newdict, GF_XATTR_LOCKINFO_KEY, + (void *)lockinfo_buf, len); + if (op_ret < 0) { + local->op_ret = -1; + local->op_errno = -op_ret; + goto unwind; + } + + unwind: + AFR_STACK_UNWIND (fgetxattr, frame, op_ret, + op_errno, newdict, + local->xdata_rsp); } - loc_copy (&local->loc, loc); - local->cont.readlink.size = size; + dict_unref (lockinfo); - STACK_WIND_COOKIE (frame, afr_readlink_cbk, - (void *) (long) call_child, - children[call_child], children[call_child]->fops->readlink, - loc, size); + return 0; +} - op_ret = 0; +int32_t +afr_fgetxattr_pathinfo_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) +{ + afr_local_t *local = NULL; + int32_t callcnt = 0; + int ret = 0; + char *xattr = NULL; + char *xattr_serz = NULL; + char xattr_cky[1024] = {0,}; + dict_t *nxattr = NULL; + long cky = 0; + int32_t padding = 0; + int32_t tlen = 0; + + if (!frame || !frame->local || !this) { + gf_log ("", GF_LOG_ERROR, "possible NULL deref"); + goto out; + } + + local = frame->local; + cky = (long) cookie; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (!dict || (op_ret < 0)) + goto out; + + if (!local->dict) + local->dict = dict_new (); + + if (local->dict) { + ret = dict_get_str (dict, + local->cont.getxattr.name, + &xattr); + if (ret) + goto out; + + xattr = gf_strdup (xattr); + + (void)snprintf (xattr_cky, 1024, "%s-%ld", + local->cont.getxattr.name, cky); + ret = dict_set_dynstr (local->dict, + xattr_cky, xattr); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Cannot set xattr cookie key"); + goto out; + } + + local->cont.getxattr.xattr_len + += strlen (xattr) + 1; + } + } out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } - return 0; -} + UNLOCK (&frame->lock); + + if (!callcnt) { + if (!local->cont.getxattr.xattr_len) + goto unwind; + + nxattr = dict_new (); + if (!nxattr) + goto unwind; + + /* extra bytes for decorations (brackets and <>'s) */ + padding += strlen (this->name) + + strlen (AFR_PATHINFO_HEADER) + 4; + local->cont.getxattr.xattr_len += (padding + 2); + + xattr_serz = GF_CALLOC (local->cont.getxattr.xattr_len, + sizeof (char), gf_common_mt_char); + + if (!xattr_serz) + goto unwind; + + /* the xlator info */ + (void) sprintf (xattr_serz, "(<"AFR_PATHINFO_HEADER"%s> ", + this->name); + + /* actual series of pathinfo */ + ret = dict_serialize_value_with_delim (local->dict, + xattr_serz + + strlen (xattr_serz), + &tlen, ' '); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Error serializing" + " dictionary"); + goto unwind; + } + /* closing part */ + *(xattr_serz + padding + tlen) = ')'; + *(xattr_serz + padding + tlen + 1) = '\0'; -/* }}} */ + ret = dict_set_dynstr (nxattr, local->cont.getxattr.name, + xattr_serz); + if (ret) + gf_log (this->name, GF_LOG_ERROR, "Cannot set pathinfo" + " key in dict"); -/* {{{ getxattr */ + unwind: + AFR_STACK_UNWIND (fgetxattr, frame, op_ret, op_errno, nxattr, + xdata); + + if (nxattr) + dict_unref (nxattr); + } + + return ret; +} int32_t -afr_getxattr_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - dict_t *dict) +afr_getxattr_pathinfo_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - xlator_t ** children = NULL; + afr_local_t *local = NULL; + int32_t callcnt = 0; + int ret = 0; + char *xattr = NULL; + char *xattr_serz = NULL; + char xattr_cky[1024] = {0,}; + dict_t *nxattr = NULL; + long cky = 0; + int32_t padding = 0; + int32_t tlen = 0; + + if (!frame || !frame->local || !this) { + gf_log ("", GF_LOG_ERROR, "possible NULL deref"); + goto out; + } - int unwind = 1; - int last_tried = -1; - int this_try = -1; - int read_child = -1; + local = frame->local; + cky = (long) cookie; - priv = this->private; - children = priv->children; + LOCK (&frame->lock); + { + callcnt = --local->call_count; - local = frame->local; + if (!dict || (op_ret < 0)) + goto out; - read_child = (long) cookie; + if (!local->dict) + local->dict = dict_new (); + + if (local->dict) { + ret = dict_get_str (dict, + local->cont.getxattr.name, + &xattr); + if (ret) + goto out; - if (op_ret == -1) { - retry: - last_tried = local->cont.getxattr.last_tried; + xattr = gf_strdup (xattr); - if (all_tried (last_tried, priv->child_count)) { - goto out; - } - this_try = ++local->cont.getxattr.last_tried; + (void)snprintf (xattr_cky, 1024, "%s-%ld", + local->cont.getxattr.name, cky); + ret = dict_set_dynstr (local->dict, + xattr_cky, xattr); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Cannot set xattr cookie key"); + goto out; + } - if (this_try == read_child) { - goto retry; + local->cont.getxattr.xattr_len += strlen (xattr) + 1; + } + } + out: + UNLOCK (&frame->lock); + + if (!callcnt) { + if (!local->cont.getxattr.xattr_len) + goto unwind; + + nxattr = dict_new (); + if (!nxattr) + goto unwind; + + /* extra bytes for decorations (brackets and <>'s) */ + padding += strlen (this->name) + strlen (AFR_PATHINFO_HEADER) + 4; + local->cont.getxattr.xattr_len += (padding + 2); + + xattr_serz = GF_CALLOC (local->cont.getxattr.xattr_len, + sizeof (char), gf_common_mt_char); + + if (!xattr_serz) + goto unwind; + + /* the xlator info */ + (void) sprintf (xattr_serz, "(<"AFR_PATHINFO_HEADER"%s> ", + this->name); + + /* actual series of pathinfo */ + ret = dict_serialize_value_with_delim (local->dict, + xattr_serz + strlen (xattr_serz), + &tlen, ' '); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Error serializing" + " dictionary"); + goto unwind; } - unwind = 0; - STACK_WIND_COOKIE (frame, afr_getxattr_cbk, - (void *) (long) read_child, - children[this_try], - children[this_try]->fops->getxattr, - &local->loc, - local->cont.getxattr.name); - } + /* closing part */ + *(xattr_serz + padding + tlen) = ')'; + *(xattr_serz + padding + tlen + 1) = '\0'; -out: - if (unwind) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, dict); - } + ret = dict_set_dynstr (nxattr, local->cont.getxattr.name, + xattr_serz); + if (ret) + gf_log (this->name, GF_LOG_ERROR, "Cannot set pathinfo" + " key in dict"); - return 0; + unwind: + AFR_STACK_UNWIND (getxattr, frame, op_ret, op_errno, nxattr, + xdata); + + if (nxattr) + dict_unref (nxattr); + } + + return ret; } +static int +afr_aggregate_stime_xattr (dict_t *this, char *key, data_t *value, void *data) +{ + int ret = 0; + + if (fnmatch (GF_XATTR_STIME_PATTERN, key, FNM_NOESCAPE) == 0) + ret = gf_get_min_stime (THIS, data, key, value); + + return ret; +} int32_t -afr_getxattr (call_frame_t *frame, xlator_t *this, - loc_t *loc, const char *name) +afr_common_getxattr_stime_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) { - afr_private_t * priv = NULL; - xlator_t ** children = NULL; - int call_child = 0; - afr_local_t * local = NULL; + afr_local_t *local = NULL; + int32_t callcnt = 0; + + if (!frame || !frame->local || !this) { + gf_log ("", GF_LOG_ERROR, "possible NULL deref"); + goto out; + } - int read_child = -1; + local = frame->local; - int32_t op_ret = -1; - int32_t op_errno = 0; + LOCK (&frame->lock); + { + callcnt = --local->call_count; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + if (!dict || (op_ret < 0)) { + local->op_errno = op_errno; + goto cleanup; + } - priv = this->private; - VALIDATE_OR_GOTO (priv->children, out); + if (!local->dict) + local->dict = dict_copy_with_ref (dict, NULL); + else + dict_foreach (dict, afr_aggregate_stime_xattr, + local->dict); + local->op_ret = 0; + } - children = priv->children; +cleanup: + UNLOCK (&frame->lock); - ALLOC_OR_GOTO (local, afr_local_t, out); - frame->local = local; + if (!callcnt) { + AFR_STACK_UNWIND (getxattr, frame, local->op_ret, + local->op_errno, local->dict, xdata); + } - read_child = afr_read_child (this, loc->inode); +out: + return 0; +} - if (read_child >= 0) { - call_child = read_child; - local->cont.getxattr.last_tried = -1; +static gf_boolean_t +afr_is_special_xattr (const char *name, fop_getxattr_cbk_t *cbk, + gf_boolean_t is_fgetxattr) +{ + gf_boolean_t is_spl = _gf_true; + + GF_ASSERT (cbk); + if (!cbk) { + is_spl = _gf_false; + goto out; + } + + if (!strcmp (name, GF_XATTR_PATHINFO_KEY)) { + if (is_fgetxattr) { + *cbk = afr_fgetxattr_pathinfo_cbk; + } else { + *cbk = afr_getxattr_pathinfo_cbk; + } + } else if (!strncmp (name, GF_XATTR_CLRLK_CMD, + strlen (GF_XATTR_CLRLK_CMD))) { + if (is_fgetxattr) { + *cbk = afr_fgetxattr_clrlk_cbk; + } else { + *cbk = afr_getxattr_clrlk_cbk; + } + } else if (!strncmp (name, GF_XATTR_LOCKINFO_KEY, + strlen (GF_XATTR_LOCKINFO_KEY))) { + if (is_fgetxattr) { + *cbk = afr_fgetxattr_lockinfo_cbk; + } else { + *cbk = afr_getxattr_lockinfo_cbk; + } + } else if (fnmatch (GF_XATTR_STIME_PATTERN, name, FNM_NOESCAPE) == 0) { + *cbk = afr_common_getxattr_stime_cbk; } else { - call_child = afr_first_up_child (priv); + is_spl = _gf_false; + } + +out: + return is_spl; +} - if (call_child == -1) { - op_errno = ENOTCONN; - gf_log (this->name, GF_LOG_DEBUG, - "no child is up"); +static void +afr_getxattr_frm_all_children (xlator_t *this, call_frame_t *frame, + const char *name, loc_t *loc, + fop_getxattr_cbk_t cbk) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + xlator_t **children = NULL; + int i = 0; + + priv = this->private; + children = priv->children; + + local = frame->local; + local->call_count = priv->child_count; + + for (i = 0; i < priv->child_count; i++) { + STACK_WIND_COOKIE (frame, cbk, + (void *) (long) i, + children[i], children[i]->fops->getxattr, + loc, name, NULL); + } + return; +} + +int32_t +afr_getxattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *name, dict_t *xdata) +{ + afr_private_t *priv = NULL; + xlator_t **children = NULL; + int call_child = 0; + afr_local_t *local = NULL; + xlator_list_t *trav = NULL; + xlator_t **sub_volumes = NULL; + int i = 0; + int32_t op_errno = 0; + int32_t read_child = -1; + int ret = -1; + fop_getxattr_cbk_t cbk = NULL; + int afr_xtime_gauge[MCNT_MAX] = {0,}; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + VALIDATE_OR_GOTO (priv->children, out); + + children = priv->children; + + AFR_SBRAIN_CHECK_LOC (loc, out); + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + loc_copy (&local->loc, loc); + if (!name) + goto no_name; + + local->cont.getxattr.name = gf_strdup (name); + + if (!strncmp (name, AFR_XATTR_PREFIX, + strlen (AFR_XATTR_PREFIX))) { + gf_log (this->name, GF_LOG_INFO, + "%s: no data present for key %s", + loc->path, name); + op_errno = ENODATA; + goto out; + } + if ((strcmp (GF_XATTR_MARKER_KEY, name) == 0) + && (GF_CLIENT_PID_GSYNCD == frame->root->pid)) { + + local->marker.call_count = priv->child_count; + + sub_volumes = alloca ( priv->child_count * sizeof (xlator_t *)); + for (i = 0, trav = this->children; trav ; + trav = trav->next, i++) { + + *(sub_volumes + i) = trav->xlator; + } + + if (cluster_getmarkerattr (frame, this, loc, name, + local, afr_getxattr_unwind, + sub_volumes, + priv->child_count, + MARKER_UUID_TYPE, + marker_uuid_default_gauge, + priv->vol_uuid)) { + + gf_log (this->name, GF_LOG_INFO, + "%s: failed to get marker attr (%s)", + loc->path, name); + op_errno = EINVAL; goto out; } - local->cont.getxattr.last_tried = call_child; + return 0; + } + + /* + * if we are doing getxattr with pathinfo as the key then we + * collect information from all childs + */ + if (afr_is_special_xattr (name, &cbk, 0)) { + afr_getxattr_frm_all_children (this, frame, name, + loc, cbk); + return 0; + } + + if (XATTR_IS_NODE_UUID (name)) { + i = 0; + STACK_WIND_COOKIE (frame, afr_getxattr_node_uuid_cbk, + (void *) (long) i, + children[i], + children[i]->fops->getxattr, + loc, name, xdata); + return 0; + } + + if (*priv->vol_uuid) { + if ((match_uuid_local (name, priv->vol_uuid) == 0) + && (GF_CLIENT_PID_GSYNCD == frame->root->pid)) { + local->marker.call_count = priv->child_count; + + sub_volumes = alloca ( priv->child_count + * sizeof (xlator_t *)); + for (i = 0, trav = this->children; trav ; + trav = trav->next, i++) { + + *(sub_volumes + i) = trav->xlator; + + } + + /* don't err out on getting ENOTCONN (brick down) + * from a subset of the bricks + */ + memcpy (afr_xtime_gauge, marker_xtime_default_gauge, + sizeof (afr_xtime_gauge)); + afr_xtime_gauge[MCNT_NOTFOUND] = 0; + afr_xtime_gauge[MCNT_ENOTCONN] = 0; + if (cluster_getmarkerattr (frame, this, loc, + name, local, + afr_getxattr_unwind, + sub_volumes, + priv->child_count, + MARKER_XTIME_TYPE, + afr_xtime_gauge, + priv->vol_uuid)) { + gf_log (this->name, GF_LOG_INFO, + "%s: failed to get marker attr (%s)", + loc->path, name); + op_errno = EINVAL; + goto out; + } + + return 0; + } + } + +no_name: + local->fresh_children = afr_children_create (priv->child_count); + if (!local->fresh_children) { + op_errno = ENOMEM; + goto out; + } + + read_child = afr_inode_get_read_ctx (this, loc->inode, + local->fresh_children); + ret = afr_get_call_child (this, local->child_up, read_child, + local->fresh_children, + &call_child, + &local->cont.getxattr.last_index); + if (ret < 0) { + op_errno = -ret; + goto out; + } + + STACK_WIND_COOKIE (frame, afr_getxattr_cbk, + (void *) (long) call_child, + children[call_child], + children[call_child]->fops->getxattr, + loc, name, xdata); + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (getxattr, frame, -1, op_errno, NULL, NULL); + return 0; +} + +/* {{{ fgetxattr */ + + +int32_t +afr_fgetxattr_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) +{ + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + xlator_t ** children = NULL; + int unwind = 1; + int32_t *last_index = NULL; + int32_t next_call_child = -1; + int32_t read_child = -1; + int32_t *fresh_children = NULL; + + priv = this->private; + children = priv->children; + + local = frame->local; + + read_child = (long) cookie; + + if (op_ret == -1) { + last_index = &local->cont.getxattr.last_index; + fresh_children = local->fresh_children; + next_call_child = afr_next_call_child (fresh_children, + local->child_up, + priv->child_count, + last_index, read_child); + if (next_call_child < 0) + goto out; + + unwind = 0; + STACK_WIND_COOKIE (frame, afr_fgetxattr_cbk, + (void *) (long) read_child, + children[next_call_child], + children[next_call_child]->fops->fgetxattr, + local->fd, + local->cont.getxattr.name, + NULL); + } + +out: + if (unwind) { + if (op_ret >= 0 && dict) + __filter_xattrs (dict); + + AFR_STACK_UNWIND (fgetxattr, frame, op_ret, op_errno, dict, + xdata); + } + + return 0; +} + +int32_t +afr_fgetxattr_unwind (call_frame_t *frame, + int op_ret, int op_errno, dict_t *dict, dict_t *xdata) + +{ + AFR_STACK_UNWIND (fgetxattr, frame, op_ret, op_errno, dict, xdata); + return 0; +} + +static void +afr_fgetxattr_frm_all_children (xlator_t *this, call_frame_t *frame, + const char *name, fd_t *fd, + fop_fgetxattr_cbk_t cbk) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + xlator_t **children = NULL; + int i = 0; + + priv = this->private; + children = priv->children; + + local = frame->local; + local->call_count = priv->child_count; + + for (i = 0; i < priv->child_count; i++) { + STACK_WIND_COOKIE (frame, cbk, + (void *) (long) i, + children[i], children[i]->fops->fgetxattr, + fd, name, NULL); + } + + return; +} + +int32_t +afr_fgetxattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, const char *name, dict_t *xdata) +{ + afr_private_t *priv = NULL; + xlator_t **children = NULL; + int call_child = 0; + afr_local_t *local = NULL; + int32_t op_ret = -1; + int32_t op_errno = 0; + int32_t read_child = -1; + fop_fgetxattr_cbk_t cbk = NULL; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + VALIDATE_OR_GOTO (priv->children, out); + + children = priv->children; + + AFR_SBRAIN_CHECK_FD (fd, out); + + AFR_LOCAL_ALLOC_OR_GOTO (local, out); + frame->local = local; + + op_ret = afr_local_init (local, priv, &op_errno); + if (op_ret < 0) { + op_errno = -op_ret; + goto out; + } + + local->fd = fd_ref (fd); + if (name) + local->cont.getxattr.name = gf_strdup (name); + + /* pathinfo gets handled only in getxattr(), but we need to handle + * lockinfo. + * If we are doing fgetxattr with lockinfo as the key then we + * collect information from all children. + */ + if (afr_is_special_xattr (name, &cbk, 1)) { + afr_fgetxattr_frm_all_children (this, frame, name, + fd, cbk); + return 0; + } + + + local->fresh_children = afr_children_create (priv->child_count); + if (!local->fresh_children) { + op_errno = ENOMEM; + goto out; } - loc_copy (&local->loc, loc); - if (name) - local->cont.getxattr.name = strdup (name); + read_child = afr_inode_get_read_ctx (this, fd->inode, + local->fresh_children); + op_ret = afr_get_call_child (this, local->child_up, read_child, + local->fresh_children, + &call_child, + &local->cont.getxattr.last_index); + if (op_ret < 0) { + op_errno = -op_ret; + op_ret = -1; + goto out; + } - STACK_WIND_COOKIE (frame, afr_getxattr_cbk, - (void *) (long) call_child, - children[call_child], children[call_child]->fops->getxattr, - loc, name); + STACK_WIND_COOKIE (frame, afr_fgetxattr_cbk, + (void *) (long) call_child, + children[call_child], + children[call_child]->fops->fgetxattr, + fd, name, xdata); - op_ret = 0; + op_ret = 0; out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } - return 0; + if (op_ret == -1) { + AFR_STACK_UNWIND (fgetxattr, frame, op_ret, op_errno, NULL, + NULL); + } + return 0; } @@ -678,136 +1811,130 @@ out: int32_t afr_readv_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - struct iovec *vector, int32_t count, struct stat *buf, - struct iobref *iobref) + xlator_t *this, int32_t op_ret, int32_t op_errno, + struct iovec *vector, int32_t count, struct iatt *buf, + struct iobref *iobref, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - xlator_t ** children = NULL; - - int unwind = 1; - int last_tried = -1; - int this_try = -1; - int read_child = -1; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + xlator_t ** children = NULL; + int unwind = 1; + int32_t *last_index = NULL; + int32_t next_call_child = -1; + int32_t *fresh_children = NULL; + int32_t read_child = -1; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - priv = this->private; - VALIDATE_OR_GOTO (priv->children, out); + priv = this->private; + VALIDATE_OR_GOTO (priv->children, out); - children = priv->children; + children = priv->children; - local = frame->local; + local = frame->local; read_child = (long) cookie; - if (op_ret == -1) { - retry: - last_tried = local->cont.readv.last_tried; - - if (all_tried (last_tried, priv->child_count)) { - goto out; - } - this_try = ++local->cont.readv.last_tried; - - if (this_try == read_child) { - /* - skip the read child since if we are here - we must have already tried that child - */ - goto retry; - } - - unwind = 0; - - STACK_WIND_COOKIE (frame, afr_readv_cbk, - (void *) (long) read_child, - children[this_try], - children[this_try]->fops->readv, - local->fd, local->cont.readv.size, - local->cont.readv.offset); - } + if (op_ret == -1) { + last_index = &local->cont.readv.last_index; + fresh_children = local->fresh_children; + next_call_child = afr_next_call_child (fresh_children, + local->child_up, + priv->child_count, + last_index, read_child); + if (next_call_child < 0) + goto out; + + unwind = 0; + + STACK_WIND_COOKIE (frame, afr_readv_cbk, + (void *) (long) read_child, + children[next_call_child], + children[next_call_child]->fops->readv, + local->fd, local->cont.readv.size, + local->cont.readv.offset, + local->cont.readv.flags, + NULL); + } out: - if (unwind) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, vector, count, buf, - iobref); - } + if (unwind) { + AFR_STACK_UNWIND (readv, frame, op_ret, op_errno, + vector, count, buf, iobref, xdata); + } - return 0; + return 0; } int32_t afr_readv (call_frame_t *frame, xlator_t *this, - fd_t *fd, size_t size, off_t offset) + fd_t *fd, size_t size, off_t offset, uint32_t flags, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - xlator_t ** children = NULL; - + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + xlator_t ** children = NULL; + int call_child = 0; + int32_t op_errno = 0; int32_t read_child = -1; - int call_child = 0; - - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - VALIDATE_OR_GOTO (fd, out); + int ret = -1; - priv = this->private; - children = priv->children; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + VALIDATE_OR_GOTO (fd, out); - ALLOC_OR_GOTO (local, afr_local_t, out); + priv = this->private; + children = priv->children; - frame->local = local; + AFR_SBRAIN_CHECK_FD (fd, out); - read_child = afr_read_child (this, fd->inode); + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; - if (read_child >= 0) { - call_child = read_child; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - /* - if read fails from the read child, we try - all children starting with the first one - */ - local->cont.readv.last_tried = -1; + local->fresh_children = afr_children_create (priv->child_count); + if (!local->fresh_children) { + op_errno = ENOMEM; + goto out; + } - } else { - call_child = afr_first_up_child (priv); - if (call_child == -1) { - op_errno = ENOTCONN; - gf_log (this->name, GF_LOG_DEBUG, - "no child is up"); - goto out; - } + read_child = afr_inode_get_read_ctx (this, fd->inode, local->fresh_children); + ret = afr_get_call_child (this, local->child_up, read_child, + local->fresh_children, + &call_child, + &local->cont.readv.last_index); + if (ret < 0) { + op_errno = -ret; + goto out; + } - local->cont.readv.last_tried = call_child; - } + local->fd = fd_ref (fd); - local->fd = fd_ref (fd); + local->cont.readv.size = size; + local->cont.readv.offset = offset; + local->cont.readv.flags = flags; - local->cont.readv.size = size; - local->cont.readv.offset = offset; + afr_open_fd_fix (fd, this); - STACK_WIND_COOKIE (frame, afr_readv_cbk, - (void *) (long) call_child, - children[call_child], - children[call_child]->fops->readv, - fd, size, offset); + STACK_WIND_COOKIE (frame, afr_readv_cbk, + (void *) (long) call_child, + children[call_child], + children[call_child]->fops->readv, + fd, size, offset, flags, xdata); - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL, 0, NULL, - NULL); - } - return 0; + if (ret < 0) { + AFR_STACK_UNWIND (readv, frame, -1, op_errno, NULL, 0, NULL, + NULL, NULL); + } + return 0; } /* }}} */ diff --git a/xlators/cluster/afr/src/afr-inode-read.h b/xlators/cluster/afr/src/afr-inode-read.h index 1127cb652..e4091a793 100644 --- a/xlators/cluster/afr/src/afr-inode-read.h +++ b/xlators/cluster/afr/src/afr-inode-read.h @@ -1,20 +1,11 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef __INODE_READ_H__ @@ -22,26 +13,30 @@ int32_t afr_access (call_frame_t *frame, xlator_t *this, - loc_t *loc, int32_t mask); + loc_t *loc, int32_t mask, dict_t *xdata); int32_t afr_stat (call_frame_t *frame, xlator_t *this, - loc_t *loc); + loc_t *loc, dict_t *xdata); int32_t afr_fstat (call_frame_t *frame, xlator_t *this, - fd_t *fd); + fd_t *fd, dict_t *xdata); int32_t afr_readlink (call_frame_t *frame, xlator_t *this, - loc_t *loc, size_t size); + loc_t *loc, size_t size, dict_t *xdata); int32_t afr_readv (call_frame_t *frame, xlator_t *this, - fd_t *fd, size_t size, off_t offset); + fd_t *fd, size_t size, off_t offset, uint32_t flags, dict_t *xdata); int32_t afr_getxattr (call_frame_t *frame, xlator_t *this, - loc_t *loc, const char *name); + loc_t *loc, const char *name, dict_t *xdata); + +int32_t +afr_fgetxattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, const char *name, dict_t *xdata); #endif /* __INODE_READ_H__ */ diff --git a/xlators/cluster/afr/src/afr-inode-write.c b/xlators/cluster/afr/src/afr-inode-write.c index 57fdf20d5..c1ec69a55 100644 --- a/xlators/cluster/afr/src/afr-inode-write.c +++ b/xlators/cluster/afr/src/afr-inode-write.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ @@ -46,1967 +37,2825 @@ #include "afr.h" #include "afr-transaction.h" +#include "afr-self-heal-common.h" +void +__inode_write_fop_cbk (call_frame_t *frame, int child_index, int read_child, + xlator_t *this, int32_t *op_ret, int32_t *op_errno, + struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata) +{ + afr_local_t *local = NULL; + + local = frame->local; + + if (afr_fop_failed (*op_ret, *op_errno)) { + local->child_errno[child_index] = *op_errno; + + switch (local->op) { + case GF_FOP_TRUNCATE: + case GF_FOP_FTRUNCATE: + if (*op_errno != EFBIG) + afr_transaction_fop_failed (frame, this, + child_index); + break; + default: + afr_transaction_fop_failed (frame, this, child_index); + break; + } + local->op_errno = *op_errno; + goto out; + } + + if ((local->success_count == 0) || (read_child == child_index)) { + local->op_ret = *op_ret; + if (prebuf) + local->cont.inode_wfop.prebuf = *prebuf; + if (postbuf) + local->cont.inode_wfop.postbuf = *postbuf; + } + + local->success_count++; +out: + return; +} -/* {{{ chmod */ - +/* {{{ writev */ -int -afr_chmod_unwind (call_frame_t *frame, xlator_t *this) +void +afr_writev_copy_outvars (call_frame_t *src_frame, call_frame_t *dst_frame) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - call_frame_t *main_frame = NULL; + afr_local_t *src_local = NULL; + afr_local_t *dst_local = NULL; - local = frame->local; - priv = this->private; + src_local = src_frame->local; + dst_local = dst_frame->local; - LOCK (&frame->lock); - { - if (local->transaction.main_frame) - main_frame = local->transaction.main_frame; - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); + dst_local->op_ret = src_local->op_ret; + dst_local->op_errno = src_local->op_errno; + dst_local->cont.inode_wfop.prebuf = src_local->cont.inode_wfop.prebuf; + dst_local->cont.inode_wfop.postbuf = src_local->cont.inode_wfop.postbuf; +} - if (main_frame) { - local->cont.chmod.buf.st_ino = local->cont.chmod.ino; - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - &local->cont.chmod.buf); - } - return 0; +void +afr_writev_unwind (call_frame_t *frame, xlator_t *this) +{ + afr_local_t * local = NULL; + local = frame->local; + + AFR_STACK_UNWIND (writev, frame, + local->op_ret, local->op_errno, + &local->cont.inode_wfop.prebuf, + &local->cont.inode_wfop.postbuf, + NULL); } +call_frame_t* +afr_transaction_detach_fop_frame (call_frame_t *frame) +{ + afr_local_t * local = NULL; + call_frame_t *fop_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + fop_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + return fop_frame; +} int -afr_chmod_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) +afr_transaction_writev_unwind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + call_frame_t *fop_frame = NULL; - int call_count = -1; - int child_index = (long) cookie; - int need_unwind = 0; + fop_frame = afr_transaction_detach_fop_frame (frame); - local = frame->local; - priv = this->private; + if (fop_frame) { + afr_writev_copy_outvars (frame, fop_frame); + afr_writev_unwind (fop_frame, this); + } + return 0; +} - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); +static void +afr_writev_handle_short_writes (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int i = 0; + + local = frame->local; + priv = this->private; + /* + * We already have the best case result of the writev calls staged + * as the return value. Any writev that returns some value less + * than the best case is now out of sync, so mark the fop as + * failed. Note that fops that have returned with errors have + * already been marked as failed. + */ + for (i = 0; i < priv->child_count; i++) { + if ((!local->replies[i].valid) || + (local->replies[i].op_ret == -1)) + continue; + + if (local->replies[i].op_ret < local->op_ret) + afr_transaction_fop_failed(frame, this, i); + } +} - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - local->cont.chmod.buf = *buf; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } +int +afr_writev_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + afr_local_t * local = NULL; + afr_private_t *priv = NULL; + call_frame_t *fop_frame = NULL; + int child_index = (long) cookie; + int call_count = -1; + int read_child = 0; + int ret = 0; + uint32_t open_fd_count = 0; + uint32_t write_is_append = 0; + + local = frame->local; + priv = this->private; + + read_child = afr_inode_get_read_ctx (this, local->fd->inode, NULL); + + LOCK (&frame->lock); + { + if (child_index == read_child) { + local->read_child_returned = _gf_true; + } + + __inode_write_fop_cbk (frame, child_index, read_child, this, + &op_ret, &op_errno, prebuf, postbuf, + xdata); + + local->replies[child_index].valid = 1; + local->replies[child_index].op_ret = op_ret; + local->replies[child_index].op_errno = op_errno; + + + /* stage the best case return value for unwind */ + if ((local->success_count == 0) || (op_ret > local->op_ret)) { + local->op_ret = op_ret; + local->op_errno = op_errno; } - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - if (need_unwind) - afr_chmod_unwind (frame, this); + if (op_ret != -1) { + if (xdata) { + ret = dict_get_uint32 (xdata, + GLUSTERFS_OPEN_FD_COUNT, + &open_fd_count); + if ((ret == 0) && + (open_fd_count > local->open_fd_count)) { + local->open_fd_count = open_fd_count; + local->update_open_fd_count = _gf_true; + } + + write_is_append = 0; + ret = dict_get_uint32 (xdata, + GLUSTERFS_WRITE_IS_APPEND, + &write_is_append); + if (ret || !write_is_append) + local->append_write = _gf_false; + } - call_count = afr_frame_return (frame); + } + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) { + + if (local->update_open_fd_count) + afr_handle_open_fd_count (frame, this); + + if (!local->stable_write && !local->append_write) + /* An appended write removes the necessity to + fsync() the file. This is because self-heal + has the logic to check for larger file when + the xattrs are not reliably pointing at + a stale file. + */ + afr_fd_report_unstable_write (this, local->fd); + + afr_writev_handle_short_writes (frame, this); + if (afr_any_fops_failed (local, priv)) { + //Don't unwind until post-op is complete + local->transaction.resume (frame, this); + } else { + /* + * Generally inode-write fops do transaction.unwind then + * transaction.resume, but writev needs to make sure that + * delayed post-op frame is placed in fdctx before unwind + * happens. This prevents the race of flush doing the + * changelog wakeup first in fuse thread and then this + * writev placing its delayed post-op frame in fdctx. + * This helps flush make sure all the delayed post-ops are + * completed. + */ + + fop_frame = afr_transaction_detach_fop_frame (frame); + afr_writev_copy_outvars (frame, fop_frame); + local->transaction.resume (frame, this); + afr_writev_unwind (fop_frame, this); + } + } + return 0; +} - if (call_count == 0) { - local->transaction.resume (frame, this); +int +afr_writev_wind (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int i = 0; + int call_count = -1; + dict_t *xdata = NULL; + GF_UNUSED int ret = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + local->replies = GF_CALLOC(priv->child_count, sizeof(*local->replies), + gf_afr_mt_reply_t); + if (!local->replies) { + local->op_ret = -1; + local->op_errno = ENOMEM; + local->transaction.unwind(frame, this); + local->transaction.resume(frame, this); + return 0; } - - return 0; + + xdata = dict_new (); + if (xdata) { + ret = dict_set_uint32 (xdata, GLUSTERFS_OPEN_FD_COUNT, + sizeof (uint32_t)); + ret = dict_set_uint32 (xdata, GLUSTERFS_WRITE_IS_APPEND, + 0); + /* Set append_write to be true speculatively. If on any + server it turns not be true, we unset it in the + callback. + */ + local->append_write = _gf_true; + } + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_writev_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->writev, + local->fd, + local->cont.writev.vector, + local->cont.writev.count, + local->cont.writev.offset, + local->cont.writev.flags, + local->cont.writev.iobref, + xdata); + + if (!--call_count) + break; + } + } + + if (xdata) + dict_unref (xdata); + + return 0; } int -afr_chmod_wind (call_frame_t *frame, xlator_t *this) +afr_writev_done (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int i = 0; - int call_count = -1; + afr_local_t *local = NULL; - local = frame->local; - priv = this->private; + local = frame->local; - call_count = afr_up_children_count (priv->child_count, local->child_up); + iobref_unref (local->cont.writev.iobref); + local->cont.writev.iobref = NULL; - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } + local->transaction.unwind (frame, this); - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_chmod_wind_cbk, (void *) (long) i, - priv->children[i], - priv->children[i]->fops->chmod, - &local->loc, - local->cont.chmod.mode); - - if (!--call_count) - break; - } - } - - return 0; + AFR_STACK_DESTROY (frame); + + return 0; } int -afr_chmod_done (call_frame_t *frame, xlator_t *this) +afr_do_writev (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - - local = frame->local; + call_frame_t *transaction_frame = NULL; + afr_local_t *local = NULL; + int op_ret = -1; + int op_errno = 0; + + local = frame->local; + + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } + + transaction_frame->local = local; + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + + local->op = GF_FOP_WRITE; + + local->success_count = 0; + + local->transaction.fop = afr_writev_wind; + local->transaction.done = afr_writev_done; + local->transaction.unwind = afr_transaction_writev_unwind; + + local->transaction.main_frame = frame; + if (local->fd->flags & O_APPEND) { + /* + * Backend vfs ignores the 'offset' for append mode fd so + * locking just the region provided for the writev does not + * give consistency gurantee. The actual write may happen at a + * completely different range than the one provided by the + * offset, len in the fop. So lock the entire file. + */ + local->transaction.start = 0; + local->transaction.len = 0; + } else { + local->transaction.start = local->cont.writev.offset; + local->transaction.len = iov_length (local->cont.writev.vector, + local->cont.writev.count); + } + + op_ret = afr_transaction (transaction_frame, this, AFR_DATA_TRANSACTION); + if (op_ret < 0) { + op_errno = -op_ret; + goto out; + } + + op_ret = 0; +out: + if (op_ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (writev, frame, op_ret, op_errno, NULL, NULL, NULL); + } - local->transaction.unwind (frame, this); + return 0; +} - AFR_STACK_DESTROY (frame); - - return 0; +static void +afr_trigger_open_fd_self_heal (fd_t *fd, xlator_t *this) +{ + call_frame_t *frame = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + char *reason = NULL; + int32_t op_errno = 0; + int ret = 0; + + if (!fd || !fd->inode || uuid_is_null (fd->inode->gfid)) { + gf_log_callingfn (this->name, GF_LOG_ERROR, "Invalid args: " + "fd: %p, inode: %p", fd, + fd ? fd->inode : NULL); + goto out; + } + + frame = create_frame (this, this->ctx->pool); + if (!frame) + goto out; + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + ret = afr_local_init (local, this->private, &op_errno); + if (ret < 0) + goto out; + + local->loc.inode = inode_ref (fd->inode); + ret = loc_path (&local->loc, NULL); + if (ret < 0) + goto out; + + sh = &local->self_heal; + sh->do_metadata_self_heal = _gf_true; + if (fd->inode->ia_type == IA_IFREG) + sh->do_data_self_heal = _gf_true; + else if (fd->inode->ia_type == IA_IFDIR) + sh->do_entry_self_heal = _gf_true; + + reason = "subvolume came online"; + afr_launch_self_heal (frame, this, fd->inode, _gf_true, + fd->inode->ia_type, reason, NULL, NULL); + return; +out: + AFR_STACK_DESTROY (frame); } +void +afr_open_fd_fix (fd_t *fd, xlator_t *this) +{ + int ret = 0; + int i = 0; + afr_fd_ctx_t *fd_ctx = NULL; + gf_boolean_t need_self_heal = _gf_false; + int *need_open = NULL; + size_t need_open_count = 0; + afr_private_t *priv = NULL; + + priv = this->private; + + if (!afr_is_fd_fixable (fd)) + goto out; + + fd_ctx = afr_fd_ctx_get (fd, this); + if (!fd_ctx) + goto out; + + LOCK (&fd->lock); + { + if (fd_ctx->up_count < priv->up_count) { + need_self_heal = _gf_true; + fd_ctx->up_count = priv->up_count; + fd_ctx->down_count = priv->down_count; + } + + need_open = alloca (priv->child_count * sizeof (*need_open)); + for (i = 0; i < priv->child_count; i++) { + need_open[i] = 0; + if (fd_ctx->opened_on[i] != AFR_FD_NOT_OPENED) + continue; + + if (!priv->child_up[i]) + continue; + + fd_ctx->opened_on[i] = AFR_FD_OPENING; + + need_open[i] = 1; + need_open_count++; + } + } + UNLOCK (&fd->lock); + if (ret) + goto out; + + if (need_self_heal) + afr_trigger_open_fd_self_heal (fd, this); + + if (!need_open_count) + goto out; + + afr_fix_open (this, fd, need_open_count, need_open); +out: + return; +} -int32_t -afr_chmod (call_frame_t *frame, xlator_t *this, - loc_t *loc, mode_t mode) +int +afr_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, + struct iovec *vector, int32_t count, off_t offset, + uint32_t flags, struct iobref *iobref, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t * transaction_frame = NULL; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + int ret = -1; + int op_errno = 0; - int ret = -1; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - int op_ret = -1; - int op_errno = 0; + priv = this->private; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + if (afr_is_split_brain (this, fd->inode)) { + op_errno = EIO; + goto out; + } - priv = this->private; + QUORUM_CHECK(writev,out); - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; - ALLOC_OR_GOTO (local, afr_local_t, out); - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - transaction_frame->local = local; + local->cont.writev.vector = iov_dup (vector, count); + local->cont.writev.count = count; + local->cont.writev.offset = offset; + local->cont.writev.flags = flags; + local->cont.writev.iobref = iobref_ref (iobref); - local->cont.chmod.mode = mode; - local->cont.chmod.ino = loc->inode->ino; + local->fd = fd_ref (fd); - local->transaction.fop = afr_chmod_wind; - local->transaction.done = afr_chmod_done; - local->transaction.unwind = afr_chmod_unwind; + /* detect here, but set it in writev_wind_cbk *after* the unstable + write is performed + */ + local->stable_write = !!((fd->flags|flags)&(O_SYNC|O_DSYNC)); - loc_copy (&local->loc, loc); - - local->transaction.main_frame = frame; - local->transaction.start = LLONG_MAX - 1; - local->transaction.len = 0; + afr_open_fd_fix (fd, this); - afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + afr_do_writev (frame, this); - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + if (ret < 0) + AFR_STACK_UNWIND (writev, frame, -1, op_errno, NULL, NULL, NULL); - return 0; + return 0; } -/* }}} */ +/* }}} */ -/* {{{ fchmod */ +/* {{{ truncate */ int -afr_fchmod_unwind (call_frame_t *frame, xlator_t *this) +afr_truncate_unwind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - call_frame_t *main_frame = NULL; - - local = frame->local; - priv = this->private; - - LOCK (&frame->lock); - { - if (local->transaction.main_frame) - main_frame = local->transaction.main_frame; - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - - if (main_frame) { - local->cont.fchmod.buf.st_ino = local->cont.fchmod.ino; - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - &local->cont.fchmod.buf); - } - return 0; + afr_local_t * local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) + main_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (truncate, main_frame, local->op_ret, + local->op_errno, + &local->cont.inode_wfop.prebuf, + &local->cont.inode_wfop.postbuf, + NULL); + } + + return 0; } int -afr_fchmod_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) +afr_truncate_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + afr_local_t * local = NULL; + int child_index = (long) cookie; + int read_child = 0; + int call_count = -1; - int call_count = -1; - int child_index = (long) cookie; - int need_unwind = 0; + local = frame->local; - local = frame->local; - priv = this->private; + read_child = afr_inode_get_read_ctx (this, local->loc.inode, NULL); - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); + LOCK (&frame->lock); + { + if (child_index == read_child) { + local->read_child_returned = _gf_true; + } - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - local->cont.fchmod.buf = *buf; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } - } + if (op_ret != -1) { + if (prebuf->ia_size != postbuf->ia_size) + local->stable_write = _gf_false; + } + __inode_write_fop_cbk (frame, child_index, read_child, this, + &op_ret, &op_errno, prebuf, postbuf, + xdata); + } + UNLOCK (&frame->lock); - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + call_count = afr_frame_return (frame); - if (need_unwind) - afr_fchmod_unwind (frame, this); + if (call_count == 0) { + if (local->stable_write && afr_txn_nothing_failed (frame, this)) + local->transaction.unwind (frame, this); - call_count = afr_frame_return (frame); + local->transaction.resume (frame, this); + } - if (call_count == 0) { - local->transaction.resume (frame, this); - } - - return 0; + return 0; } -int -afr_fchmod_wind (call_frame_t *frame, xlator_t *this) +int32_t +afr_truncate_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int i = 0; - int call_count = -1; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_fchmod_wind_cbk, (void *) (long) i, - priv->children[i], - priv->children[i]->fops->fchmod, - local->fd, - local->cont.fchmod.mode); - - if (!--call_count) - break; - } - } - - return 0; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + local->stable_write = _gf_true; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_truncate_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->truncate, + &local->loc, + local->cont.truncate.offset, + NULL); + + if (!--call_count) + break; + } + } + + return 0; } int -afr_fchmod_done (call_frame_t *frame, xlator_t *this) +afr_truncate_done (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; + afr_local_t *local = NULL; - local = frame->local; + local = frame->local; - local->transaction.unwind (frame, this); + local->transaction.unwind (frame, this); - AFR_STACK_DESTROY (frame); - - return 0; + AFR_STACK_DESTROY (frame); + + return 0; } -int32_t -afr_fchmod (call_frame_t *frame, xlator_t *this, - fd_t *fd, mode_t mode) +int +afr_truncate (call_frame_t *frame, xlator_t *this, + loc_t *loc, off_t offset, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t * transaction_frame = NULL; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - int ret = -1; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - int op_ret = -1; - int op_errno = 0; + priv = this->private; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + QUORUM_CHECK(truncate,out); - priv = this->private; + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; - ALLOC_OR_GOTO (local, afr_local_t, out); - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - transaction_frame->local = local; + local->cont.truncate.offset = offset; - local->cont.fchmod.mode = mode; - local->cont.fchmod.ino = fd->inode->ino; + local->transaction.fop = afr_truncate_wind; + local->transaction.done = afr_truncate_done; + local->transaction.unwind = afr_truncate_unwind; - local->transaction.fop = afr_fchmod_wind; - local->transaction.done = afr_fchmod_done; - local->transaction.unwind = afr_fchmod_unwind; + loc_copy (&local->loc, loc); - local->fd = fd_ref (fd); - - local->transaction.main_frame = frame; - local->transaction.start = LLONG_MAX - 1; - local->transaction.len = 0; + local->transaction.main_frame = frame; + local->transaction.start = offset; + local->transaction.len = 0; - afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + ret = afr_transaction (transaction_frame, this, AFR_DATA_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (truncate, frame, -1, op_errno, NULL, NULL, NULL); + } - return 0; + return 0; } + /* }}} */ -/* {{{ chown */ +/* {{{ ftruncate */ + int -afr_chown_unwind (call_frame_t *frame, xlator_t *this) +afr_ftruncate_unwind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - call_frame_t *main_frame = NULL; - - local = frame->local; - priv = this->private; - - LOCK (&frame->lock); - { - if (local->transaction.main_frame) - main_frame = local->transaction.main_frame; - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - - if (main_frame) { - local->cont.chown.buf.st_ino = local->cont.chown.ino; - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - &local->cont.chown.buf); - } - return 0; + afr_local_t * local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) + main_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (ftruncate, main_frame, local->op_ret, + local->op_errno, + &local->cont.inode_wfop.prebuf, + &local->cont.inode_wfop.postbuf, + NULL); + } + return 0; } int -afr_chown_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) +afr_ftruncate_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int call_count = -1; - int child_index = (long) cookie; - int need_unwind = 0; + afr_local_t * local = NULL; + int child_index = (long) cookie; + int call_count = -1; + int read_child = 0; - local = frame->local; - priv = this->private; + local = frame->local; - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); + read_child = afr_inode_get_read_ctx (this, local->fd->inode, NULL); - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - local->cont.chown.buf = *buf; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } - } + LOCK (&frame->lock); + { + if (child_index == read_child) { + local->read_child_returned = _gf_true; + } - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + if (op_ret != -1) { + if (prebuf->ia_size != postbuf->ia_size) + local->stable_write = _gf_false; + } + __inode_write_fop_cbk (frame, child_index, read_child, this, + &op_ret, &op_errno, prebuf, postbuf, + xdata); + } + UNLOCK (&frame->lock); - if (need_unwind) { - local->transaction.unwind (frame, this); - } + call_count = afr_frame_return (frame); - call_count = afr_frame_return (frame); + if (call_count == 0) { + if (local->stable_write && afr_txn_nothing_failed (frame, this)) + local->transaction.unwind (frame, this); - if (call_count == 0) { - local->transaction.resume (frame, this); - } - - return 0; + local->transaction.resume (frame, this); + } + + return 0; } int -afr_chown_wind (call_frame_t *frame, xlator_t *this) +afr_ftruncate_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + local->stable_write = _gf_true; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_ftruncate_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->ftruncate, + local->fd, + local->cont.ftruncate.offset, + NULL); + + if (!--call_count) + break; + } + } + + return 0; +} - int call_count = -1; - int i = 0; - local = frame->local; - priv = this->private; +int +afr_ftruncate_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; - call_count = afr_up_children_count (priv->child_count, local->child_up); + local = frame->local; - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } + local->transaction.unwind (frame, this); - local->call_count = call_count; + AFR_STACK_DESTROY (frame); - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_chown_wind_cbk, (void *) (long) i, - priv->children[i], - priv->children[i]->fops->chown, - &local->loc, local->cont.chown.uid, - local->cont.chown.gid); - - if (!--call_count) - break; - } - } - - return 0; + return 0; } int -afr_chown_done (call_frame_t *frame, xlator_t *this) +afr_do_ftruncate (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; + call_frame_t * transaction_frame = NULL; + afr_local_t * local = NULL; + int op_ret = -1; + int op_errno = 0; - local = frame->local; + local = frame->local; - local->transaction.unwind (frame, this); + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + goto out; + } - AFR_STACK_DESTROY (frame); + transaction_frame->local = local; + frame->local = NULL; - return 0; -} + local->op = GF_FOP_FTRUNCATE; + local->transaction.fop = afr_ftruncate_wind; + local->transaction.done = afr_ftruncate_done; + local->transaction.unwind = afr_ftruncate_unwind; -int -afr_chown (call_frame_t *frame, xlator_t *this, - loc_t *loc, uid_t uid, gid_t gid) -{ - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t *transaction_frame = NULL; + local->transaction.main_frame = frame; + + local->transaction.start = local->cont.ftruncate.offset; + local->transaction.len = 0; - int ret = -1; + op_ret = afr_transaction (transaction_frame, this, AFR_DATA_TRANSACTION); + if (op_ret < 0) { + op_errno = -op_ret; + goto out; + } - int op_ret = -1; - int op_errno = 0; + op_ret = 0; +out: + if (op_ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (ftruncate, frame, op_ret, op_errno, NULL, + NULL, NULL); + } + + return 0; +} - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - priv = this->private; +int +afr_ftruncate (call_frame_t *frame, xlator_t *this, + fd_t *fd, off_t offset, dict_t *xdata) +{ + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - ALLOC_OR_GOTO (local, afr_local_t, out); + priv = this->private; - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + if (afr_is_split_brain (this, fd->inode)) { + op_errno = EIO; + goto out; + } + QUORUM_CHECK(ftruncate,out); - transaction_frame->local = local; + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; - local->cont.chown.uid = uid; - local->cont.chown.gid = gid; - local->cont.chown.ino = loc->inode->ino; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - local->transaction.fop = afr_chown_wind; - local->transaction.done = afr_chown_done; - local->transaction.unwind = afr_chown_unwind; + local->cont.ftruncate.offset = offset; - loc_copy (&local->loc, loc); + local->fd = fd_ref (fd); - local->transaction.main_frame = frame; - local->transaction.start = LLONG_MAX - 1; - local->transaction.len = 0; + afr_open_fd_fix (fd, this); - afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + afr_do_ftruncate (frame, this); - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (ftruncate, frame, -1, op_errno, NULL, NULL, NULL); + } - return 0; + return 0; } - /* }}} */ -/* {{{ chown */ +/* {{{ setattr */ int -afr_fchown_unwind (call_frame_t *frame, xlator_t *this) +afr_setattr_unwind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - call_frame_t *main_frame = NULL; - - local = frame->local; - priv = this->private; - - LOCK (&frame->lock); - { - if (local->transaction.main_frame) - main_frame = local->transaction.main_frame; - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - - if (main_frame) { - local->cont.fchown.buf.st_ino = local->cont.fchown.ino; - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - &local->cont.fchown.buf); - } - return 0; + afr_local_t * local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) + main_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (setattr, main_frame, local->op_ret, + local->op_errno, + &local->cont.inode_wfop.prebuf, + &local->cont.inode_wfop.postbuf, + NULL); + } + + return 0; } int -afr_fchown_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) +afr_setattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *preop, struct iatt *postop, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int call_count = -1; - int child_index = (long) cookie; - int need_unwind = 0; + afr_local_t * local = NULL; + afr_private_t * priv = NULL; + int child_index = (long) cookie; + int read_child = 0; + int call_count = -1; + int need_unwind = 0; - local = frame->local; - priv = this->private; + local = frame->local; + priv = this->private; - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); + read_child = afr_inode_get_read_ctx (this, local->loc.inode, NULL); - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - local->cont.fchown.buf = *buf; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } - } + LOCK (&frame->lock); + { + if (child_index == read_child) { + local->read_child_returned = _gf_true; + } - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + __inode_write_fop_cbk (frame, child_index, read_child, this, + &op_ret, &op_errno, preop, postop, + xdata); - if (need_unwind) { - local->transaction.unwind (frame, this); - } + if ((local->success_count >= priv->wait_count) + && local->read_child_returned) { + need_unwind = 1; + } + } + UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + if (need_unwind) + local->transaction.unwind (frame, this); - if (call_count == 0) { - local->transaction.resume (frame, this); - } - - return 0; -} + call_count = afr_frame_return (frame); + if (call_count == 0) { + local->transaction.resume (frame, this); + } -int -afr_fchown_wind (call_frame_t *frame, xlator_t *this) -{ - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int call_count = -1; - int i = 0; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; + return 0; +} - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_fchown_wind_cbk, (void *) (long) i, - priv->children[i], - priv->children[i]->fops->fchown, - local->fd, local->cont.fchown.uid, - local->cont.fchown.gid); - if (!--call_count) - break; - } - } - - return 0; +int32_t +afr_setattr_wind (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_setattr_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->setattr, + &local->loc, + &local->cont.setattr.in_buf, + local->cont.setattr.valid, + NULL); + + if (!--call_count) + break; + } + } + + return 0; } int -afr_fchown_done (call_frame_t *frame, xlator_t *this) +afr_setattr_done (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; + afr_local_t *local = NULL; - local = frame->local; + local = frame->local; - local->transaction.unwind (frame, this); + local->transaction.unwind (frame, this); - AFR_STACK_DESTROY (frame); + AFR_STACK_DESTROY (frame); - return 0; + return 0; } int -afr_fchown (call_frame_t *frame, xlator_t *this, - fd_t *fd, uid_t uid, gid_t gid) +afr_setattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, struct iatt *buf, int32_t valid, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t *transaction_frame = NULL; - - int ret = -1; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - int op_ret = -1; - int op_errno = 0; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + priv = this->private; - priv = this->private; + QUORUM_CHECK(setattr,out); - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - ALLOC_OR_GOTO (local, afr_local_t, out); + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - transaction_frame->local = local; + local->cont.setattr.in_buf = *buf; + local->cont.setattr.valid = valid; - local->cont.fchown.uid = uid; - local->cont.fchown.gid = gid; - local->cont.fchown.ino = fd->inode->ino; + local->transaction.fop = afr_setattr_wind; + local->transaction.done = afr_setattr_done; + local->transaction.unwind = afr_setattr_unwind; - local->transaction.fop = afr_fchown_wind; - local->transaction.done = afr_fchown_done; - local->transaction.unwind = afr_fchown_unwind; + loc_copy (&local->loc, loc); - local->fd = fd_ref (fd); + local->transaction.main_frame = frame; + local->transaction.start = LLONG_MAX - 1; + local->transaction.len = 0; - local->transaction.main_frame = frame; - local->transaction.start = LLONG_MAX - 1; - local->transaction.len = 0; + ret = afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); - - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (setattr, frame, -1, op_errno, NULL, NULL, NULL); + } - return 0; + return 0; } -/* }}} */ - -/* {{{ writev */ +/* {{{ fsetattr */ int -afr_writev_unwind (call_frame_t *frame, xlator_t *this) +afr_fsetattr_unwind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - call_frame_t *main_frame = NULL; - - local = frame->local; - priv = this->private; - - LOCK (&frame->lock); - { - if (local->transaction.main_frame) - main_frame = local->transaction.main_frame; - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - - if (main_frame) { - local->cont.writev.buf.st_ino = local->cont.writev.ino; - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - &local->cont.writev.buf); - } - return 0; + afr_local_t * local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) + main_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (fsetattr, main_frame, local->op_ret, + local->op_errno, + &local->cont.inode_wfop.prebuf, + &local->cont.inode_wfop.postbuf, + NULL); + } + + return 0; } int -afr_writev_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) +afr_fsetattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *preop, struct iatt *postop, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + afr_local_t * local = NULL; + afr_private_t * priv = NULL; + int child_index = (long) cookie; + int read_child = 0; + int call_count = -1; + int need_unwind = 0; - int child_index = (long) cookie; - int call_count = -1; - int need_unwind = 0; + local = frame->local; + priv = this->private; - local = frame->local; - priv = this->private; + read_child = afr_inode_get_read_ctx (this, local->fd->inode, NULL); - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); + LOCK (&frame->lock); + { + if (child_index == read_child) { + local->read_child_returned = _gf_true; + } - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - local->cont.writev.buf = *buf; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } - } + __inode_write_fop_cbk (frame, child_index, read_child, this, + &op_ret, &op_errno, preop, postop, + xdata); - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + if ((local->success_count >= priv->wait_count) + && local->read_child_returned) { + need_unwind = 1; + } + } + UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + if (need_unwind) + local->transaction.unwind (frame, this); - if (call_count == 0) { - local->transaction.unwind (frame, this); + call_count = afr_frame_return (frame); - local->transaction.resume (frame, this); - } - - return 0; + if (call_count == 0) { + local->transaction.resume (frame, this); + } + + return 0; } -int -afr_writev_wind (call_frame_t *frame, xlator_t *this) +int32_t +afr_fsetattr_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int i = 0; - int call_count = -1; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_writev_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->writev, - local->fd, - local->cont.writev.vector, - local->cont.writev.count, - local->cont.writev.offset, - local->cont.writev.iobref); - - if (!--call_count) - break; - } - } - - return 0; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_fsetattr_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fsetattr, + local->fd, + &local->cont.fsetattr.in_buf, + local->cont.fsetattr.valid, + NULL); + + if (!--call_count) + break; + } + } + + return 0; } int -afr_writev_done (call_frame_t *frame, xlator_t *this) +afr_fsetattr_done (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - - local = frame->local; + afr_local_t *local = NULL; - iobref_unref (local->cont.writev.iobref); - local->cont.writev.iobref = NULL; + local = frame->local; - local->transaction.unwind (frame, this); + local->transaction.unwind (frame, this); - AFR_STACK_DESTROY (frame); + AFR_STACK_DESTROY (frame); - return 0; + return 0; } - int -afr_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, - struct iovec *vector, int32_t count, off_t offset, - struct iobref *iobref) +afr_fsetattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, struct iatt *buf, int32_t valid, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t *transaction_frame = NULL; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - int ret = -1; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - int op_ret = -1; - int op_errno = 0; + priv = this->private; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + if (afr_is_split_brain (this, fd->inode)) { + op_errno = EIO; + goto out; + } - priv = this->private; + QUORUM_CHECK(fsetattr,out); - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - ALLOC_OR_GOTO (local, afr_local_t, out); + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - transaction_frame->local = local; + local->cont.fsetattr.in_buf = *buf; + local->cont.fsetattr.valid = valid; - local->op = GF_FOP_WRITE; - local->cont.writev.vector = iov_dup (vector, count); - local->cont.writev.count = count; - local->cont.writev.offset = offset; - local->cont.writev.ino = fd->inode->ino; - local->cont.writev.iobref = iobref_ref (iobref); + local->transaction.fop = afr_fsetattr_wind; + local->transaction.done = afr_fsetattr_done; + local->transaction.unwind = afr_fsetattr_unwind; - local->transaction.fop = afr_writev_wind; - local->transaction.done = afr_writev_done; - local->transaction.unwind = afr_writev_unwind; + local->fd = fd_ref (fd); - local->fd = fd_ref (fd); + afr_open_fd_fix (fd, this); - local->transaction.main_frame = frame; - if (fd->flags & O_APPEND) { - local->transaction.start = 0; - local->transaction.len = 0; - } else { - local->transaction.start = offset; - local->transaction.len = iov_length (vector, count); - } + local->transaction.main_frame = frame; + local->transaction.start = LLONG_MAX - 1; + local->transaction.len = 0; - afr_transaction (transaction_frame, this, AFR_DATA_TRANSACTION); + ret = afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (fsetattr, frame, -1, op_errno, NULL, NULL, NULL); + } - return 0; + return 0; } -/* }}} */ +/* {{{ setxattr */ -/* {{{ truncate */ int -afr_truncate_unwind (call_frame_t *frame, xlator_t *this) +afr_setxattr_unwind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - call_frame_t *main_frame = NULL; - - local = frame->local; - priv = this->private; + afr_local_t * local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) + main_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (setxattr, main_frame, + local->op_ret, local->op_errno, + NULL); + } + return 0; +} - LOCK (&frame->lock); - { - if (local->transaction.main_frame) - main_frame = local->transaction.main_frame; - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - if (main_frame) { - local->cont.truncate.buf.st_ino = local->cont.truncate.ino; - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - &local->cont.truncate.buf); - } - return 0; +int +afr_setxattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int need_unwind = 0; + int child_index = (long) cookie; + + local = frame->local; + priv = this->private; + + LOCK (&frame->lock); + { + __inode_write_fop_cbk (frame, child_index, -1, this, + &op_ret, &op_errno, NULL, NULL, + xdata); + if (local->success_count == priv->child_count) { + need_unwind = 1; + } + } + UNLOCK (&frame->lock); + + if (need_unwind) + local->transaction.unwind (frame, this); + + call_count = afr_frame_return (frame); + + if (call_count == 0) { + local->transaction.resume (frame, this); + } + + return 0; } int -afr_truncate_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) +afr_setxattr_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_setxattr_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->setxattr, + &local->loc, + local->cont.setxattr.dict, + local->cont.setxattr.flags, + NULL); + + if (!--call_count) + break; + } + } + + return 0; +} - int child_index = (long) cookie; - int call_count = -1; - int need_unwind = 0; - local = frame->local; - priv = this->private; +int +afr_setxattr_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = frame->local; - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); + local->transaction.unwind (frame, this); - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - local->cont.truncate.buf = *buf; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } - } - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + AFR_STACK_DESTROY (frame); - if (need_unwind) - local->transaction.unwind (frame, this); + return 0; +} - call_count = afr_frame_return (frame); +int +afr_setxattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, dict_t *dict, int32_t flags, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = EINVAL; - if (call_count == 0) { - local->transaction.resume (frame, this); - } - - return 0; -} + VALIDATE_OR_GOTO (this, out); + GF_IF_INTERNAL_XATTR_GOTO ("trusted.afr.*", dict, + op_errno, out); -int32_t -afr_truncate_wind (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int i = 0; + GF_IF_INTERNAL_XATTR_GOTO ("trusted.glusterfs.afr.*", dict, + op_errno, out); - local = frame->local; - priv = this->private; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this->private, out); - call_count = afr_up_children_count (priv->child_count, local->child_up); + priv = this->private; - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } + QUORUM_CHECK(setxattr,out); + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - local->call_count = call_count; + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_truncate_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->truncate, - &local->loc, - local->cont.truncate.offset); + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - if (!--call_count) - break; - } - } - - return 0; -} + local->cont.setxattr.dict = dict_ref (dict); + local->cont.setxattr.flags = flags; + local->transaction.fop = afr_setxattr_wind; + local->transaction.done = afr_setxattr_done; + local->transaction.unwind = afr_setxattr_unwind; -int -afr_truncate_done (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; + loc_copy (&local->loc, loc); - local = frame->local; + local->transaction.main_frame = frame; + local->transaction.start = LLONG_MAX - 1; + local->transaction.len = 0; - local->transaction.unwind (frame, this); + ret = afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - AFR_STACK_DESTROY (frame); + ret = 0; +out: + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (setxattr, frame, -1, op_errno, NULL); + } - return 0; + return 0; } +/* {{{ fsetxattr */ + int -afr_truncate (call_frame_t *frame, xlator_t *this, - loc_t *loc, off_t offset) +afr_fsetxattr_unwind (call_frame_t *frame, xlator_t *this) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t *transaction_frame = NULL; + afr_local_t *local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) + main_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (fsetxattr, main_frame, + local->op_ret, local->op_errno, + NULL); + } + return 0; +} - int ret = -1; - int op_ret = -1; - int op_errno = 0; +int +afr_fsetxattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int need_unwind = 0; + int child_index = (long) cookie; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + local = frame->local; + priv = this->private; - priv = this->private; + LOCK (&frame->lock); + { - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + __inode_write_fop_cbk (frame, child_index, -1, this, + &op_ret, &op_errno, NULL, NULL, + xdata); + if (local->success_count == priv->child_count) { + need_unwind = 1; + } + } + UNLOCK (&frame->lock); - ALLOC_OR_GOTO (local, afr_local_t, out); + if (need_unwind) + local->transaction.unwind (frame, this); - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + call_count = afr_frame_return (frame); - transaction_frame->local = local; + if (call_count == 0) { + local->transaction.resume (frame, this); + } - local->op_ret = -1; + return 0; +} - local->cont.truncate.offset = offset; - local->cont.truncate.ino = loc->inode->ino; - local->transaction.fop = afr_truncate_wind; - local->transaction.done = afr_truncate_done; - local->transaction.unwind = afr_truncate_unwind; +int +afr_fsetxattr_wind (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_fsetxattr_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fsetxattr, + local->fd, + local->cont.fsetxattr.dict, + local->cont.fsetxattr.flags, + NULL); + + if (!--call_count) + break; + } + } + + return 0; +} - loc_copy (&local->loc, loc); - local->transaction.main_frame = frame; - local->transaction.start = 0; - local->transaction.len = offset; +int +afr_fsetxattr_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = frame->local; - afr_transaction (transaction_frame, this, AFR_DATA_TRANSACTION); + local->transaction.unwind (frame, this); - op_ret = 0; -out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + AFR_STACK_DESTROY (frame); - return 0; + return 0; } +int +afr_fsetxattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, dict_t *dict, int32_t flags, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = EINVAL; -/* }}} */ + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); -/* {{{ ftruncate */ + GF_IF_INTERNAL_XATTR_GOTO ("trusted.afr.*", dict, + op_errno, out); + GF_IF_INTERNAL_XATTR_GOTO ("trusted.glusterfs.afr.*", dict, + op_errno, out); -int -afr_ftruncate_unwind (call_frame_t *frame, xlator_t *this) -{ - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - call_frame_t *main_frame = NULL; + priv = this->private; - local = frame->local; - priv = this->private; + if (afr_is_split_brain (this, fd->inode)) { + op_errno = EIO; + goto out; + } - LOCK (&frame->lock); - { - if (local->transaction.main_frame) - main_frame = local->transaction.main_frame; - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); + QUORUM_CHECK(fsetxattr,out); - if (main_frame) { - local->cont.ftruncate.buf.st_ino = local->cont.ftruncate.ino; - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - &local->cont.ftruncate.buf); - } - return 0; -} + AFR_LOCAL_ALLOC_OR_GOTO (local, out); + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; -int -afr_ftruncate_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) -{ - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + goto out; + } - int child_index = (long) cookie; - int call_count = -1; - int need_unwind = 0; + transaction_frame->local = local; - local = frame->local; - priv = this->private; + local->op_ret = -1; - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); + local->cont.fsetxattr.dict = dict_ref (dict); + local->cont.fsetxattr.flags = flags; - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - local->cont.ftruncate.buf = *buf; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } - } - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + local->transaction.fop = afr_fsetxattr_wind; + local->transaction.done = afr_fsetxattr_done; + local->transaction.unwind = afr_fsetxattr_unwind; - if (need_unwind) - local->transaction.unwind (frame, this); + local->fd = fd_ref (fd); - call_count = afr_frame_return (frame); + local->transaction.main_frame = frame; + local->transaction.start = LLONG_MAX - 1; + local->transaction.len = 0; - if (call_count == 0) { - local->transaction.resume (frame, this); - } - - return 0; + ret = afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } + + ret = 0; +out: + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (fsetxattr, frame, -1, op_errno, NULL); + } + + return 0; } +/* }}} */ -int -afr_ftruncate_wind (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int i = 0; - local = frame->local; - priv = this->private; +/* {{{ removexattr */ - call_count = afr_up_children_count (priv->child_count, local->child_up); - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } +int +afr_removexattr_unwind (call_frame_t *frame, xlator_t *this) +{ + afr_local_t * local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) + main_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (removexattr, main_frame, + local->op_ret, local->op_errno, + NULL); + } + return 0; +} - local->call_count = call_count; - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_ftruncate_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->ftruncate, - local->fd, local->cont.ftruncate.offset); +int +afr_removexattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int need_unwind = 0; + int child_index = (long) cookie; + + local = frame->local; + priv = this->private; + + LOCK (&frame->lock); + { + __inode_write_fop_cbk (frame, child_index, -1, this, + &op_ret, &op_errno, NULL, NULL, + xdata); + if (local->success_count == priv->wait_count) { + need_unwind = 1; + } + } + UNLOCK (&frame->lock); + + if (need_unwind) + local->transaction.unwind (frame, this); + + call_count = afr_frame_return (frame); + + if (call_count == 0) { + local->transaction.resume (frame, this); + } + + return 0; +} - if (!--call_count) - break; - } - } - - return 0; + +int32_t +afr_removexattr_wind (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_removexattr_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->removexattr, + &local->loc, + local->cont.removexattr.name, + NULL); + + if (!--call_count) + break; + } + } + + return 0; } int -afr_ftruncate_done (call_frame_t *frame, xlator_t *this) +afr_removexattr_done (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - - local = frame->local; + afr_local_t * local = frame->local; - local->transaction.unwind (frame, this); + local->transaction.unwind (frame, this); - AFR_STACK_DESTROY (frame); + AFR_STACK_DESTROY (frame); - return 0; + return 0; } int -afr_ftruncate (call_frame_t *frame, xlator_t *this, - fd_t *fd, off_t offset) +afr_removexattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *name, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t *transaction_frame = NULL; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - int ret = -1; + VALIDATE_OR_GOTO (this, out); - int op_ret = -1; - int op_errno = 0; + GF_IF_NATIVE_XATTR_GOTO ("trusted.afr.*", + name, op_errno, out); - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + GF_IF_NATIVE_XATTR_GOTO ("trusted.glusterfs.afr.*", + name, op_errno, out); - priv = this->private; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this->private, out); + VALIDATE_OR_GOTO (loc, out); - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + priv = this->private; - ALLOC_OR_GOTO (local, afr_local_t, out); + QUORUM_CHECK(removexattr,out); - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + op_errno = ENOMEM; + goto out; + } - transaction_frame->local = local; + AFR_LOCAL_ALLOC_OR_GOTO (transaction_frame->local, out); + local = transaction_frame->local; - local->op = GF_FOP_FTRUNCATE; - local->op_ret = -1; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - local->cont.ftruncate.offset = offset; - local->cont.ftruncate.ino = fd->inode->ino; + local->cont.removexattr.name = gf_strdup (name); - local->transaction.fop = afr_ftruncate_wind; - local->transaction.done = afr_ftruncate_done; - local->transaction.unwind = afr_ftruncate_unwind; + local->transaction.fop = afr_removexattr_wind; + local->transaction.done = afr_removexattr_done; + local->transaction.unwind = afr_removexattr_unwind; - local->fd = fd_ref (fd); + loc_copy (&local->loc, loc); - local->transaction.main_frame = frame; - local->transaction.start = 0; - local->transaction.len = offset; + local->transaction.main_frame = frame; + local->transaction.start = LLONG_MAX - 1; + local->transaction.len = 0; - afr_transaction (transaction_frame, this, AFR_DATA_TRANSACTION); + ret = afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + if (ret < 0) { + op_errno = -ret; + goto out; + } - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (removexattr, frame, -1, op_errno, NULL); + } - return 0; + return 0; } -/* }}} */ - -/* {{{ utimens */ - - +/* ffremovexattr */ int -afr_utimens_unwind (call_frame_t *frame, xlator_t *this) +afr_fremovexattr_unwind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - call_frame_t *main_frame = NULL; - - local = frame->local; - priv = this->private; - - LOCK (&frame->lock); - { - if (local->transaction.main_frame) - main_frame = local->transaction.main_frame; - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - - if (main_frame) { - local->cont.utimens.buf.st_ino = local->cont.utimens.ino; - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno, - &local->cont.utimens.buf); - } - return 0; + afr_local_t * local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) + main_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (fremovexattr, main_frame, + local->op_ret, local->op_errno, + NULL); + } + return 0; } int -afr_utimens_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) +afr_fremovexattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + afr_local_t * local = NULL; + afr_private_t * priv = NULL; + int call_count = -1; + int need_unwind = 0; + int child_index = (long) cookie; - int child_index = (long) cookie; - int call_count = -1; - int need_unwind = 1; + local = frame->local; + priv = this->private; - local = frame->local; - priv = this->private; + LOCK (&frame->lock); + { + __inode_write_fop_cbk (frame, child_index, -1, this, + &op_ret, &op_errno, NULL, NULL, + xdata); - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); + if (local->success_count == priv->wait_count) { + need_unwind = 1; + } + } + UNLOCK (&frame->lock); - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - local->cont.utimens.buf = *buf; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } - } + if (need_unwind) + local->transaction.unwind (frame, this); - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + call_count = afr_frame_return (frame); - if (need_unwind) - local->transaction.unwind (frame, this); + if (call_count == 0) { + local->transaction.resume (frame, this); + } - call_count = afr_frame_return (frame); - - if (call_count == 0) { - local->transaction.resume (frame, this); - } - - return 0; + return 0; } -int -afr_utimens_wind (call_frame_t *frame, xlator_t *this) +int32_t +afr_fremovexattr_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int i = 0; - - local = frame->local; - priv = this->private; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_fremovexattr_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fremovexattr, + local->fd, + local->cont.removexattr.name, + NULL); + + if (!--call_count) + break; + } + } + + return 0; +} - call_count = afr_up_children_count (priv->child_count, local->child_up); - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } +int +afr_fremovexattr_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t * local = frame->local; - local->call_count = call_count; + local->transaction.unwind (frame, this); - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_utimens_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->utimens, - &local->loc, - local->cont.utimens.tv); + AFR_STACK_DESTROY (frame); - if (!--call_count) - break; - } - } - - return 0; + return 0; } int -afr_utimens_done (call_frame_t *frame, xlator_t *this) +afr_fremovexattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, const char *name, dict_t *xdata) { - afr_local_t * local = NULL; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_ret = -1; + int op_errno = 0; - local = frame->local; + VALIDATE_OR_GOTO (this, out); - local->transaction.unwind (frame, this); + GF_IF_NATIVE_XATTR_GOTO ("trusted.afr.*", + name, op_errno, out); - AFR_STACK_DESTROY (frame); + GF_IF_NATIVE_XATTR_GOTO ("trusted.glusterfs.afr.*", + name, op_errno, out); - return 0; -} + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this->private, out); + priv = this->private; + if (afr_is_split_brain (this, fd->inode)) { + op_errno = EIO; + goto out; + } -int -afr_utimens (call_frame_t *frame, xlator_t *this, - loc_t *loc, struct timespec tv[2]) -{ - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t *transaction_frame = NULL; + QUORUM_CHECK(fremovexattr, out); - int ret = -1; + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + goto out; + } - int op_ret = -1; - int op_errno = 0; + AFR_LOCAL_ALLOC_OR_GOTO (local, out); - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) { + op_errno = -ret; + goto out; + } - priv = this->private; + transaction_frame->local = local; - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + local->op_ret = -1; - ALLOC_OR_GOTO (local, afr_local_t, out); + local->cont.removexattr.name = gf_strdup (name); - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + local->transaction.fop = afr_fremovexattr_wind; + local->transaction.done = afr_fremovexattr_done; + local->transaction.unwind = afr_fremovexattr_unwind; + + local->fd = fd_ref (fd); + + local->transaction.main_frame = frame; + local->transaction.start = LLONG_MAX - 1; + local->transaction.len = 0; + + op_ret = afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + if (op_ret < 0) { + op_errno = -op_ret; + goto out; + } + + op_ret = 0; +out: + if (op_ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (fremovexattr, frame, op_ret, op_errno, NULL); + } - transaction_frame->local = local; + return 0; +} - local->op_ret = -1; +static int +afr_fallocate_unwind (call_frame_t *frame, xlator_t *this) +{ + afr_local_t * local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) + main_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (fallocate, main_frame, local->op_ret, + local->op_errno, + &local->cont.inode_wfop.prebuf, + &local->cont.inode_wfop.postbuf, + NULL); + } + return 0; +} - local->cont.utimens.tv[0] = tv[0]; - local->cont.utimens.tv[1] = tv[1]; +static int +afr_fallocate_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + afr_local_t * local = NULL; + afr_private_t * priv = NULL; + int child_index = (long) cookie; + int call_count = -1; + int need_unwind = 0; + int read_child = 0; - local->cont.utimens.ino = loc->inode->ino; + local = frame->local; + priv = this->private; - local->transaction.fop = afr_utimens_wind; - local->transaction.done = afr_utimens_done; - local->transaction.unwind = afr_utimens_unwind; + read_child = afr_inode_get_read_ctx (this, local->fd->inode, NULL); - loc_copy (&local->loc, loc); - - local->transaction.main_frame = frame; - local->transaction.start = LLONG_MAX - 1; - local->transaction.len = 0; + LOCK (&frame->lock); + { + if (child_index == read_child) { + local->read_child_returned = _gf_true; + } - afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + __inode_write_fop_cbk (frame, child_index, read_child, this, + &op_ret, &op_errno, prebuf, postbuf, + xdata); - op_ret = 0; -out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } + if ((local->success_count >= priv->wait_count) + && local->read_child_returned) { + need_unwind = 1; + } + } + UNLOCK (&frame->lock); - return 0; -} + if (need_unwind) + local->transaction.unwind (frame, this); -/* }}} */ + call_count = afr_frame_return (frame); -/* {{{ setxattr */ + if (call_count == 0) { + local->transaction.resume (frame, this); + } + return 0; +} -int -afr_setxattr_unwind (call_frame_t *frame, xlator_t *this) +static int +afr_fallocate_wind (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - call_frame_t *main_frame = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_fallocate_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fallocate, + local->fd, + local->cont.fallocate.mode, + local->cont.fallocate.offset, + local->cont.fallocate.len, + NULL); + + if (!--call_count) + break; + } + } + + return 0; +} - local = frame->local; - priv = this->private; +static int +afr_fallocate_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; - LOCK (&frame->lock); - { - if (local->transaction.main_frame) - main_frame = local->transaction.main_frame; - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); + local = frame->local; - if (main_frame) { - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno) - } - return 0; -} + local->transaction.unwind (frame, this); + AFR_STACK_DESTROY (frame); -int -afr_setxattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) + return 0; +} + +static int +afr_do_fallocate (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + call_frame_t * transaction_frame = NULL; + afr_local_t * local = NULL; + int op_ret = -1; + int op_errno = 0; - int call_count = -1; - int need_unwind = 0; + local = frame->local; - local = frame->local; - priv = this->private; + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + goto out; + } - LOCK (&frame->lock); - { - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } - } + transaction_frame->local = local; + frame->local = NULL; - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + local->op = GF_FOP_FALLOCATE; - if (need_unwind) - local->transaction.unwind (frame, this); + local->transaction.fop = afr_fallocate_wind; + local->transaction.done = afr_fallocate_done; + local->transaction.unwind = afr_fallocate_unwind; - call_count = afr_frame_return (frame); + local->transaction.main_frame = frame; - if (call_count == 0) { - local->transaction.resume (frame, this); - } - - return 0; -} + local->transaction.start = local->cont.fallocate.offset; + local->transaction.len = 0; + /* fallocate can modify the file size */ + op_ret = afr_transaction (transaction_frame, this, AFR_DATA_TRANSACTION); + if (op_ret < 0) { + op_errno = -op_ret; + goto out; + } + + op_ret = 0; +out: + if (op_ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (fallocate, frame, op_ret, op_errno, NULL, + NULL, NULL); + } + + return 0; +} int -afr_setxattr_wind (call_frame_t *frame, xlator_t *this) +afr_fallocate (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t mode, + off_t offset, size_t len, dict_t *xdata) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - int call_count = -1; - int i = 0; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - local = frame->local; - priv = this->private; + priv = this->private; - call_count = afr_up_children_count (priv->child_count, local->child_up); + if (afr_is_split_brain (this, fd->inode)) { + op_errno = EIO; + goto out; + } + QUORUM_CHECK(fallocate,out); - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; - local->call_count = call_count; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_setxattr_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->setxattr, - &local->loc, - local->cont.setxattr.dict, - local->cont.setxattr.flags); + local->cont.fallocate.mode = mode; + local->cont.fallocate.offset = offset; + local->cont.fallocate.len = len; - if (!--call_count) - break; - } - } - - return 0; -} + local->fd = fd_ref (fd); + afr_open_fd_fix (fd, this); -int -afr_setxattr_done (call_frame_t *frame, xlator_t *this) -{ - afr_local_t * local = frame->local; + afr_do_fallocate (frame, this); - local->transaction.unwind (frame, this); + ret = 0; +out: + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (fallocate, frame, -1, op_errno, NULL, NULL, NULL); + } - AFR_STACK_DESTROY (frame); - - return 0; + return 0; } +/* }}} */ -int -afr_setxattr (call_frame_t *frame, xlator_t *this, - loc_t *loc, dict_t *dict, int32_t flags) +/* {{{ discard */ + +static int +afr_discard_unwind (call_frame_t *frame, xlator_t *this) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t *transaction_frame = NULL; + afr_local_t * local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) + main_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (discard, main_frame, local->op_ret, + local->op_errno, + &local->cont.inode_wfop.prebuf, + &local->cont.inode_wfop.postbuf, + NULL); + } + return 0; +} - int ret = -1; +static int +afr_discard_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + afr_local_t * local = NULL; + afr_private_t * priv = NULL; + int child_index = (long) cookie; + int call_count = -1; + int need_unwind = 0; + int read_child = 0; - int op_ret = -1; - int op_errno = 0; + local = frame->local; + priv = this->private; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + read_child = afr_inode_get_read_ctx (this, local->fd->inode, NULL); - priv = this->private; + LOCK (&frame->lock); + { + if (child_index == read_child) { + local->read_child_returned = _gf_true; + } - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + __inode_write_fop_cbk (frame, child_index, read_child, this, + &op_ret, &op_errno, prebuf, postbuf, + xdata); - ALLOC_OR_GOTO (local, afr_local_t, out); + if ((local->success_count >= priv->wait_count) + && local->read_child_returned) { + need_unwind = 1; + } + } + UNLOCK (&frame->lock); - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + if (need_unwind) + local->transaction.unwind (frame, this); - transaction_frame->local = local; + call_count = afr_frame_return (frame); - local->op_ret = -1; + if (call_count == 0) { + local->transaction.resume (frame, this); + } - local->cont.setxattr.dict = dict_ref (dict); - local->cont.setxattr.flags = flags; + return 0; +} - local->transaction.fop = afr_setxattr_wind; - local->transaction.done = afr_setxattr_done; - local->transaction.unwind = afr_setxattr_unwind; +static int +afr_discard_wind (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_discard_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->discard, + local->fd, + local->cont.discard.offset, + local->cont.discard.len, + NULL); + + if (!--call_count) + break; + } + } + + return 0; +} - loc_copy (&local->loc, loc); +static int +afr_discard_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; - local->transaction.main_frame = frame; - local->transaction.start = LLONG_MAX - 1; - local->transaction.len = 0; + local = frame->local; - afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + local->transaction.unwind (frame, this); - op_ret = 0; -out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } + AFR_STACK_DESTROY (frame); - return 0; + return 0; } -/* }}} */ +static int +afr_do_discard (call_frame_t *frame, xlator_t *this) +{ + call_frame_t * transaction_frame = NULL; + afr_local_t * local = NULL; + int op_ret = -1; + int op_errno = 0; -/* {{{ removexattr */ + local = frame->local; + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + goto out; + } -int -afr_removexattr_unwind (call_frame_t *frame, xlator_t *this) -{ - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - call_frame_t *main_frame = NULL; + transaction_frame->local = local; + frame->local = NULL; - local = frame->local; - priv = this->private; + local->op = GF_FOP_DISCARD; - LOCK (&frame->lock); - { - if (local->transaction.main_frame) - main_frame = local->transaction.main_frame; - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); + local->transaction.fop = afr_discard_wind; + local->transaction.done = afr_discard_done; + local->transaction.unwind = afr_discard_unwind; - if (main_frame) { - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno) - } - return 0; -} + local->transaction.main_frame = frame; + + local->transaction.start = local->cont.discard.offset; + local->transaction.len = 0; + op_ret = afr_transaction (transaction_frame, this, AFR_DATA_TRANSACTION); + if (op_ret < 0) { + op_errno = -op_ret; + goto out; + } + + op_ret = 0; +out: + if (op_ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (discard, frame, op_ret, op_errno, NULL, + NULL, NULL); + } + + return 0; +} int -afr_removexattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) +afr_discard (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, + size_t len, dict_t *xdata) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - int call_count = -1; - int need_unwind = 0; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - local = frame->local; - priv = this->private; + priv = this->private; - LOCK (&frame->lock); - { - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } - } + if (afr_is_split_brain (this, fd->inode)) { + op_errno = EIO; + goto out; + } + QUORUM_CHECK(discard, out); - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; - if (need_unwind) - local->transaction.unwind (frame, this); + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; - call_count = afr_frame_return (frame); + local->cont.discard.offset = offset; + local->cont.discard.len = len; - if (call_count == 0) { - local->transaction.resume (frame, this); - } - - return 0; + local->fd = fd_ref (fd); + + afr_open_fd_fix (fd, this); + + afr_do_discard(frame, this); + + ret = 0; +out: + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (discard, frame, -1, op_errno, NULL, NULL, NULL); + } + + return 0; } -int32_t -afr_removexattr_wind (call_frame_t *frame, xlator_t *this) +/* {{{ zerofill */ + +static int +afr_zerofill_unwind (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; + afr_local_t *local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) { + main_frame = local->transaction.main_frame; + } + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (zerofill, main_frame, local->op_ret, + local->op_errno, + &local->cont.zerofill.prebuf, + &local->cont.zerofill.postbuf, + NULL); + } + return 0; +} - int call_count = -1; - int i = 0; +static int +afr_zerofill_wind_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int child_index = (long) cookie; + int call_count = -1; + int need_unwind = 0; + int read_child = 0; + + local = frame->local; + priv = this->private; + + read_child = afr_inode_get_read_ctx (this, local->fd->inode, NULL); + + LOCK (&frame->lock); + { + if (child_index == read_child) { + local->read_child_returned = _gf_true; + } + + if (afr_fop_failed (op_ret, op_errno)) { + afr_transaction_fop_failed (frame, this, child_index); + } + + if (op_ret != -1) { + if (local->success_count == 0) { + local->op_ret = op_ret; + local->cont.zerofill.prebuf = *prebuf; + local->cont.zerofill.postbuf = *postbuf; + } + + if (child_index == read_child) { + local->cont.zerofill.prebuf = *prebuf; + local->cont.zerofill.postbuf = *postbuf; + } + + local->success_count++; + + if ((local->success_count >= priv->wait_count) + && local->read_child_returned) { + need_unwind = 1; + } + } + local->op_errno = op_errno; + } + UNLOCK (&frame->lock); + + if (need_unwind) { + local->transaction.unwind (frame, this); + } + call_count = afr_frame_return (frame); + + if (call_count == 0) { + local->transaction.resume (frame, this); + } + + return 0; +} - local = frame->local; - priv = this->private; +static int +afr_zerofill_wind (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i]) { + STACK_WIND_COOKIE (frame, afr_zerofill_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->zerofill, + local->fd, + local->cont.zerofill.offset, + local->cont.zerofill.len, + NULL); + + if (!--call_count) + break; + } + } + + return 0; +} - call_count = afr_up_children_count (priv->child_count, local->child_up); +static int +afr_zerofill_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } + local = frame->local; - local->call_count = call_count; + local->transaction.unwind (frame, this); - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_removexattr_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->removexattr, - &local->loc, - local->cont.removexattr.name); + AFR_STACK_DESTROY (frame); - if (!--call_count) - break; - } - } - - return 0; + return 0; } - -int -afr_removexattr_done (call_frame_t *frame, xlator_t *this) +static int +afr_do_zerofill(call_frame_t *frame, xlator_t *this) { - afr_local_t * local = frame->local; + call_frame_t *transaction_frame = NULL; + afr_local_t *local = NULL; + int op_ret = -1; + int op_errno = 0; - local->transaction.unwind (frame, this); + local = frame->local; - AFR_STACK_DESTROY (frame); - - return 0; -} + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + goto out; + } + transaction_frame->local = local; + frame->local = NULL; -int -afr_removexattr (call_frame_t *frame, xlator_t *this, - loc_t *loc, const char *name) -{ - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - call_frame_t *transaction_frame = NULL; + local->op = GF_FOP_ZEROFILL; - int ret = -1; + local->transaction.fop = afr_zerofill_wind; + local->transaction.done = afr_zerofill_done; + local->transaction.unwind = afr_zerofill_unwind; - int op_ret = -1; - int op_errno = 0; + local->transaction.main_frame = frame; - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - VALIDATE_OR_GOTO (loc, out); + local->transaction.start = local->cont.zerofill.offset; + local->transaction.len = 0; - priv = this->private; + op_ret = afr_transaction (transaction_frame, this, + AFR_DATA_TRANSACTION); + if (op_ret < 0) { + op_errno = -op_ret; + goto out; + } - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + op_ret = 0; +out: + if (op_ret < 0) { + if (transaction_frame) { + AFR_STACK_DESTROY (transaction_frame); + } + AFR_STACK_UNWIND (zerofill, frame, op_ret, op_errno, NULL, + NULL, NULL); + } + + return 0; +} - ALLOC_OR_GOTO (local, afr_local_t, out); +int +afr_zerofill (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, + size_t len, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); - transaction_frame->local = local; + priv = this->private; - local->op_ret = -1; + if (afr_is_split_brain (this, fd->inode)) { + op_errno = EIO; + goto out; + } + QUORUM_CHECK(zerofill, out); - local->cont.removexattr.name = strdup (name); + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; - local->transaction.fop = afr_removexattr_wind; - local->transaction.done = afr_removexattr_done; - local->transaction.unwind = afr_removexattr_unwind; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) { + goto out; + } + local->cont.zerofill.offset = offset; + local->cont.zerofill.len = len; - loc_copy (&local->loc, loc); + local->fd = fd_ref (fd); - local->transaction.main_frame = frame; - local->transaction.start = LLONG_MAX - 1; - local->transaction.len = 0; + afr_open_fd_fix (fd, this); - afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + afr_do_zerofill(frame, this); - op_ret = 0; + ret = 0; out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - - return 0; + if (ret < 0) { + if (transaction_frame) { + AFR_STACK_DESTROY (transaction_frame); + } + AFR_STACK_UNWIND (zerofill, frame, -1, op_errno, NULL, + NULL, NULL); + } + + return 0; } + +/* }}} */ + + diff --git a/xlators/cluster/afr/src/afr-inode-write.h b/xlators/cluster/afr/src/afr-inode-write.h index 358d25b52..8e93ca44a 100644 --- a/xlators/cluster/afr/src/afr-inode-write.h +++ b/xlators/cluster/afr/src/afr-inode-write.h @@ -1,20 +1,11 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef __INODE_WRITE_H__ @@ -22,43 +13,70 @@ int32_t afr_chmod (call_frame_t *frame, xlator_t *this, - loc_t *loc, mode_t mode); + loc_t *loc, mode_t mode, dict_t *xdata); int32_t afr_chown (call_frame_t *frame, xlator_t *this, - loc_t *loc, uid_t uid, gid_t gid); + loc_t *loc, uid_t uid, gid_t gid, dict_t *xdata); int afr_fchown (call_frame_t *frame, xlator_t *this, - fd_t *fd, uid_t uid, gid_t gid); + fd_t *fd, uid_t uid, gid_t gid, dict_t *xdata); int32_t afr_fchmod (call_frame_t *frame, xlator_t *this, - fd_t *fd, mode_t mode); + fd_t *fd, mode_t mode, dict_t *xdata); int32_t -afr_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, +afr_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iovec *vector, int32_t count, off_t offset, - struct iobref *iobref); + uint32_t flags, struct iobref *iobref, dict_t *xdata); int32_t afr_truncate (call_frame_t *frame, xlator_t *this, - loc_t *loc, off_t offset); + loc_t *loc, off_t offset, dict_t *xdata); int32_t afr_ftruncate (call_frame_t *frame, xlator_t *this, - fd_t *fd, off_t offset); + fd_t *fd, off_t offset, dict_t *xdata); int32_t afr_utimens (call_frame_t *frame, xlator_t *this, - loc_t *loc, struct timespec tv[2]); + loc_t *loc, struct timespec tv[2], dict_t *xdata); + +int +afr_setattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, struct iatt *buf, int32_t valid, dict_t *xdata); + +int +afr_fsetattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, struct iatt *buf, int32_t valid, dict_t *xdata); int32_t afr_setxattr (call_frame_t *frame, xlator_t *this, - loc_t *loc, dict_t *dict, int32_t flags); + loc_t *loc, dict_t *dict, int32_t flags, dict_t *xdata); + +int32_t +afr_fsetxattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, dict_t *dict, int32_t flags, dict_t *xdata); int32_t afr_removexattr (call_frame_t *frame, xlator_t *this, - loc_t *loc, const char *name); + loc_t *loc, const char *name, dict_t *xdata); +int32_t +afr_fremovexattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, const char *name, dict_t *xdata); + +int +afr_discard (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, + size_t len, dict_t *xdata); + +int +afr_fallocate (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t mode, + off_t offset, size_t len, dict_t *xdata); + +int +afr_zerofill(call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, + size_t len, dict_t *xdata); #endif /* __INODE_WRITE_H__ */ diff --git a/xlators/cluster/afr/src/afr-lk-common.c b/xlators/cluster/afr/src/afr-lk-common.c new file mode 100644 index 000000000..060d78f35 --- /dev/null +++ b/xlators/cluster/afr/src/afr-lk-common.c @@ -0,0 +1,2174 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#include "dict.h" +#include "byte-order.h" +#include "common-utils.h" + +#include "afr.h" +#include "afr-transaction.h" + +#include <signal.h> + + +#define LOCKED_NO 0x0 /* no lock held */ +#define LOCKED_YES 0x1 /* for DATA, METADATA, ENTRY and higher_path */ +#define LOCKED_LOWER 0x2 /* for lower path */ + +#define AFR_TRACE_INODELK_IN(frame, this, params ...) \ + do { \ + afr_private_t *_priv = this->private; \ + if (!_priv->inodelk_trace) \ + break; \ + afr_trace_inodelk_in (frame, this, params); \ + } while (0); + +#define AFR_TRACE_INODELK_OUT(frame, this, params ...) \ + do { \ + afr_private_t *_priv = this->private; \ + if (!_priv->inodelk_trace) \ + break; \ + afr_trace_inodelk_out (frame, this, params); \ + } while (0); + +#define AFR_TRACE_ENTRYLK_IN(frame, this, params ...) \ + do { \ + afr_private_t *_priv = this->private; \ + if (!_priv->entrylk_trace) \ + break; \ + afr_trace_entrylk_in (frame, this, params); \ + } while (0); + +#define AFR_TRACE_ENTRYLK_OUT(frame, this, params ...) \ + do { \ + afr_private_t *_priv = this->private; \ + if (!_priv->entrylk_trace) \ + break; \ + afr_trace_entrylk_out (frame, this, params); \ + } while (0); + +int +afr_entry_lockee_cmp (const void *l1, const void *l2) +{ + const afr_entry_lockee_t *r1 = l1; + const afr_entry_lockee_t *r2 = l2; + int ret = 0; + uuid_t gfid1 = {0}; + uuid_t gfid2 = {0}; + + loc_gfid ((loc_t*)&r1->loc, gfid1); + loc_gfid ((loc_t*)&r2->loc, gfid2); + ret = uuid_compare (gfid1, gfid2); + /*Entrylks with NULL basename are the 'smallest'*/ + if (ret == 0) { + if (!r1->basename) + return -1; + if (!r2->basename) + return 1; + ret = strcmp (r1->basename, r2->basename); + } + + if (ret <= 0) + return -1; + else + return 1; +} + +int afr_lock_blocking (call_frame_t *frame, xlator_t *this, int child_index); + +static int +afr_copy_locked_nodes (call_frame_t *frame, xlator_t *this); + +static uint64_t afr_lock_number = 1; + +static uint64_t +get_afr_lock_number () +{ + return (++afr_lock_number); +} + +int +afr_set_lock_number (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + + local = frame->local; + int_lock = &local->internal_lock; + + int_lock->lock_number = get_afr_lock_number (); + + return 0; +} + +void +afr_set_lk_owner (call_frame_t *frame, xlator_t *this, void *lk_owner) +{ + gf_log (this->name, GF_LOG_TRACE, + "Setting lk-owner=%llu", + (unsigned long long) (unsigned long)lk_owner); + + set_lk_owner_from_ptr (&frame->root->lk_owner, lk_owner); +} + +static int +is_afr_lock_selfheal (afr_local_t *local) +{ + afr_internal_lock_t *int_lock = NULL; + int ret = -1; + + int_lock = &local->internal_lock; + + switch (int_lock->selfheal_lk_type) { + case AFR_DATA_SELF_HEAL_LK: + case AFR_METADATA_SELF_HEAL_LK: + ret = 1; + break; + case AFR_ENTRY_SELF_HEAL_LK: + ret = 0; + break; + } + + return ret; + +} + +int32_t +internal_lock_count (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int32_t call_count = 0; + int i = 0; + + local = frame->local; + priv = this->private; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) + ++call_count; + } + + return call_count; +} + +static void +afr_print_inodelk (char *str, int size, int cmd, + struct gf_flock *flock, gf_lkowner_t *owner) +{ + char *cmd_str = NULL; + char *type_str = NULL; + + switch (cmd) { +#if F_GETLK != F_GETLK64 + case F_GETLK64: +#endif + case F_GETLK: + cmd_str = "GETLK"; + break; + +#if F_SETLK != F_SETLK64 + case F_SETLK64: +#endif + case F_SETLK: + cmd_str = "SETLK"; + break; + +#if F_SETLKW != F_SETLKW64 + case F_SETLKW64: +#endif + case F_SETLKW: + cmd_str = "SETLKW"; + break; + + default: + cmd_str = "<null>"; + break; + } + + switch (flock->l_type) { + case F_RDLCK: + type_str = "READ"; + break; + case F_WRLCK: + type_str = "WRITE"; + break; + case F_UNLCK: + type_str = "UNLOCK"; + break; + default: + type_str = "UNKNOWN"; + break; + } + + snprintf (str, size, "lock=INODELK, cmd=%s, type=%s, " + "start=%llu, len=%llu, pid=%llu, lk-owner=%s", + cmd_str, type_str, (unsigned long long) flock->l_start, + (unsigned long long) flock->l_len, + (unsigned long long) flock->l_pid, + lkowner_utoa (owner)); + +} + +static void +afr_print_lockee (char *str, int size, loc_t *loc, fd_t *fd, + int child_index) +{ + snprintf (str, size, "path=%s, fd=%p, child=%d", + loc->path ? loc->path : "<nul>", + fd ? fd : NULL, + child_index); +} + +void +afr_print_entrylk (char *str, int size, const char *basename, + gf_lkowner_t *owner) +{ + snprintf (str, size, "Basename=%s, lk-owner=%s", + basename ? basename : "<nul>", + lkowner_utoa (owner)); +} + +static void +afr_print_verdict (int op_ret, int op_errno, char *str) +{ + if (op_ret < 0) { + if (op_errno == EAGAIN) + strcpy (str, "EAGAIN"); + else + strcpy (str, "FAILED"); + } + else + strcpy (str, "GRANTED"); +} + +static void +afr_set_lock_call_type (afr_lock_call_type_t lock_call_type, + char *lock_call_type_str, + afr_internal_lock_t *int_lock) +{ + switch (lock_call_type) { + case AFR_INODELK_TRANSACTION: + if (int_lock->transaction_lk_type == AFR_TRANSACTION_LK) + strcpy (lock_call_type_str, "AFR_INODELK_TRANSACTION"); + else + strcpy (lock_call_type_str, "AFR_INODELK_SELFHEAL"); + break; + case AFR_INODELK_NB_TRANSACTION: + if (int_lock->transaction_lk_type == AFR_TRANSACTION_LK) + strcpy (lock_call_type_str, "AFR_INODELK_NB_TRANSACTION"); + else + strcpy (lock_call_type_str, "AFR_INODELK_NB_SELFHEAL"); + break; + case AFR_ENTRYLK_TRANSACTION: + if (int_lock->transaction_lk_type == AFR_TRANSACTION_LK) + strcpy (lock_call_type_str, "AFR_ENTRYLK_TRANSACTION"); + else + strcpy (lock_call_type_str, "AFR_ENTRYLK_SELFHEAL"); + break; + case AFR_ENTRYLK_NB_TRANSACTION: + if (int_lock->transaction_lk_type == AFR_TRANSACTION_LK) + strcpy (lock_call_type_str, "AFR_ENTRYLK_NB_TRANSACTION"); + else + strcpy (lock_call_type_str, "AFR_ENTRYLK_NB_SELFHEAL"); + break; + default: + strcpy (lock_call_type_str, "UNKNOWN"); + break; + } + +} + +static void +afr_trace_inodelk_out (call_frame_t *frame, xlator_t *this, + afr_lock_call_type_t lock_call_type, + afr_lock_op_type_t lk_op_type, struct gf_flock *flock, + int op_ret, int op_errno, int32_t child_index) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + + char lockee[256]; + char lock_call_type_str[256]; + char verdict[16]; + + local = frame->local; + int_lock = &local->internal_lock; + + afr_print_lockee (lockee, 256, &local->loc, local->fd, child_index); + + afr_set_lock_call_type (lock_call_type, lock_call_type_str, int_lock); + + afr_print_verdict (op_ret, op_errno, verdict); + + gf_log (this->name, GF_LOG_INFO, + "[%s %s] [%s] lk-owner=%s Lockee={%s} Number={%llu}", + lock_call_type_str, + lk_op_type == AFR_LOCK_OP ? "LOCK REPLY" : "UNLOCK REPLY", + verdict, lkowner_utoa (&frame->root->lk_owner), lockee, + (unsigned long long) int_lock->lock_number); + +} + +static void +afr_trace_inodelk_in (call_frame_t *frame, xlator_t *this, + afr_lock_call_type_t lock_call_type, + afr_lock_op_type_t lk_op_type, struct gf_flock *flock, + int32_t cmd, int32_t child_index) +{ + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + + char lock[256]; + char lockee[256]; + char lock_call_type_str[256]; + + local = frame->local; + int_lock = &local->internal_lock; + + afr_print_inodelk (lock, 256, cmd, flock, &frame->root->lk_owner); + afr_print_lockee (lockee, 256, &local->loc, local->fd, child_index); + + afr_set_lock_call_type (lock_call_type, lock_call_type_str, int_lock); + + gf_log (this->name, GF_LOG_INFO, + "[%s %s] Lock={%s} Lockee={%s} Number={%llu}", + lock_call_type_str, + lk_op_type == AFR_LOCK_OP ? "LOCK REQUEST" : "UNLOCK REQUEST", + lock, lockee, + (unsigned long long) int_lock->lock_number); + +} + +static void +afr_trace_entrylk_in (call_frame_t *frame, xlator_t *this, + afr_lock_call_type_t lock_call_type, + afr_lock_op_type_t lk_op_type, const char *basename, + int32_t cookie) +{ + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + afr_private_t *priv = NULL; + int child_index = 0; + int lockee_no = 0; + + char lock[256]; + char lockee[256]; + char lock_call_type_str[256]; + + local = frame->local; + int_lock = &local->internal_lock; + priv = this->private; + + if (!priv->entrylk_trace) { + return; + } + lockee_no = cookie / priv->child_count; + child_index = cookie % priv->child_count; + + afr_print_entrylk (lock, 256, basename, &frame->root->lk_owner); + afr_print_lockee (lockee, 256, &int_lock->lockee[lockee_no].loc, local->fd, + child_index); + + afr_set_lock_call_type (lock_call_type, lock_call_type_str, int_lock); + + gf_log (this->name, GF_LOG_INFO, + "[%s %s] Lock={%s} Lockee={%s} Number={%llu}, Cookie={%d}", + lock_call_type_str, + lk_op_type == AFR_LOCK_OP ? "LOCK REQUEST" : "UNLOCK REQUEST", + lock, lockee, + (unsigned long long) int_lock->lock_number, + cookie); +} + +static void +afr_trace_entrylk_out (call_frame_t *frame, xlator_t *this, + afr_lock_call_type_t lock_call_type, + afr_lock_op_type_t lk_op_type, const char *basename, + int op_ret, int op_errno, int32_t cookie) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int lockee_no = 0; + int child_index = 0; + + char lock[256]; + char lockee[256]; + char lock_call_type_str[256]; + char verdict[16]; + + local = frame->local; + int_lock = &local->internal_lock; + priv = this->private; + + if (!priv->entrylk_trace) { + return; + } + lockee_no = cookie / priv->child_count; + child_index = cookie % priv->child_count; + + afr_print_entrylk (lock, 256, basename, &frame->root->lk_owner); + afr_print_lockee (lockee, 256, &int_lock->lockee[lockee_no].loc, local->fd, + child_index); + + afr_set_lock_call_type (lock_call_type, lock_call_type_str, int_lock); + + afr_print_verdict (op_ret, op_errno, verdict); + + gf_log (this->name, GF_LOG_INFO, + "[%s %s] [%s] Lock={%s} Lockee={%s} Number={%llu} Cookie={%d}", + lock_call_type_str, + lk_op_type == AFR_LOCK_OP ? "LOCK REPLY" : "UNLOCK REPLY", + verdict, + lock, lockee, + (unsigned long long) int_lock->lock_number, + cookie); + +} + +static int +transaction_lk_op (afr_local_t *local) +{ + afr_internal_lock_t *int_lock = NULL; + int ret = -1; + + int_lock = &local->internal_lock; + + if (int_lock->transaction_lk_type == AFR_TRANSACTION_LK) { + gf_log (THIS->name, GF_LOG_DEBUG, + "lk op is for a transaction"); + ret = 1; + } + else if (int_lock->transaction_lk_type == AFR_SELFHEAL_LK) { + gf_log (THIS->name, GF_LOG_DEBUG, + "lk op is for a self heal"); + + ret = 0; + } + + if (ret == -1) + gf_log (THIS->name, GF_LOG_DEBUG, + "lk op is not set"); + + return ret; + +} + +static int +is_afr_lock_transaction (afr_local_t *local) +{ + int ret = 0; + + switch (local->transaction.type) { + case AFR_DATA_TRANSACTION: + case AFR_METADATA_TRANSACTION: + ret = 1; + break; + + case AFR_ENTRY_RENAME_TRANSACTION: + case AFR_ENTRY_TRANSACTION: + ret = 0; + break; + + } + + return ret; +} + +int +afr_init_entry_lockee (afr_entry_lockee_t *lockee, afr_local_t *local, + loc_t *loc, char *basename, int child_count) +{ + int ret = -1; + + loc_copy (&lockee->loc, loc); + lockee->basename = (basename)? gf_strdup (basename): NULL; + if (basename && !lockee->basename) + goto out; + + lockee->locked_count = 0; + lockee->locked_nodes = GF_CALLOC (child_count, + sizeof (*lockee->locked_nodes), + gf_afr_mt_afr_node_character); + + if (!lockee->locked_nodes) + goto out; + + ret = 0; +out: + return ret; + +} + +void +afr_entry_lockee_cleanup (afr_internal_lock_t *int_lock) +{ + int i = 0; + + for (i = 0; i < int_lock->lockee_count; i++) { + loc_wipe (&int_lock->lockee[i].loc); + if (int_lock->lockee[i].basename) + GF_FREE (int_lock->lockee[i].basename); + if (int_lock->lockee[i].locked_nodes) + GF_FREE (int_lock->lockee[i].locked_nodes); + } + + return; +} + +static int +initialize_entrylk_variables (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + afr_private_t *priv = NULL; + + int i = 0; + + priv = this->private; + local = frame->local; + int_lock = &local->internal_lock; + + int_lock->entrylk_lock_count = 0; + int_lock->lock_op_ret = -1; + int_lock->lock_op_errno = 0; + + for (i = 0; i < AFR_LOCKEE_COUNT_MAX; i++) { + if (!int_lock->lockee[i].locked_nodes) + break; + int_lock->lockee[i].locked_count = 0; + memset (int_lock->lockee[i].locked_nodes, 0, + sizeof (*int_lock->lockee[i].locked_nodes) * + priv->child_count); + } + + return 0; +} + +static int +initialize_inodelk_variables (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + afr_private_t *priv = NULL; + afr_inodelk_t *inodelk = NULL; + + priv = this->private; + local = frame->local; + int_lock = &local->internal_lock; + + inodelk = afr_get_inodelk (int_lock, int_lock->domain); + + inodelk->lock_count = 0; + int_lock->lk_attempted_count = 0; + int_lock->lock_op_ret = -1; + int_lock->lock_op_errno = 0; + + memset (inodelk->locked_nodes, 0, + sizeof (*inodelk->locked_nodes) * priv->child_count); + memset (int_lock->locked_nodes, 0, + sizeof (*int_lock->locked_nodes) * priv->child_count); + + return 0; +} + +loc_t * +lower_path (loc_t *l1, const char *b1, loc_t *l2, const char *b2) +{ + int ret = 0; + + ret = uuid_compare (l1->inode->gfid, l2->inode->gfid); + + if (ret == 0) + ret = strcmp (b1, b2); + + if (ret <= 0) + return l1; + else + return l2; +} + +int +afr_lockee_locked_nodes_count (afr_internal_lock_t *int_lock) +{ + int call_count = 0; + int i = 0; + + for (i = 0; i < int_lock->lockee_count; i++) + call_count += int_lock->lockee[i].locked_count; + + return call_count; +} + +int +afr_locked_nodes_count (unsigned char *locked_nodes, int child_count) + +{ + int i = 0; + int call_count = 0; + + for (i = 0; i < child_count; i++) { + if (locked_nodes[i] & LOCKED_YES) + call_count++; + } + + return call_count; +} + +/* FIXME: What if UNLOCK fails */ +static int32_t +afr_unlock_common_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + int call_count = 0; + + local = frame->local; + int_lock = &local->internal_lock; + + LOCK (&frame->lock); + { + call_count = --int_lock->lk_call_count; + } + UNLOCK (&frame->lock); + + if (call_count == 0) { + gf_log (this->name, GF_LOG_TRACE, + "All internal locks unlocked"); + int_lock->lock_cbk (frame, this); + } + + return 0; +} + +static int32_t +afr_unlock_inodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + afr_inodelk_t *inodelk = NULL; + int32_t child_index = (long)cookie; + afr_private_t *priv = NULL; + + local = frame->local; + int_lock = &local->internal_lock; + + AFR_TRACE_INODELK_OUT (frame, this, AFR_INODELK_TRANSACTION, + AFR_UNLOCK_OP, NULL, op_ret, + op_errno, child_index); + + priv = this->private; + + if (op_ret < 0 && op_errno != ENOTCONN && op_errno != EBADFD) { + gf_log (this->name, GF_LOG_INFO, "%s: unlock failed on subvolume %s " + "with lock owner %s", local->loc.path, + priv->children[child_index]->name, + lkowner_utoa (&frame->root->lk_owner)); + } + + + inodelk = afr_get_inodelk (int_lock, int_lock->domain); + inodelk->locked_nodes[child_index] &= LOCKED_NO; + if (local->transaction.eager_lock) + local->transaction.eager_lock[child_index] = 0; + + afr_unlock_common_cbk (frame, cookie, this, op_ret, op_errno, xdata); + + return 0; + +} + +static int +afr_unlock_inodelk (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_inodelk_t *inodelk = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + struct gf_flock flock = {0,}; + struct gf_flock full_flock = {0,}; + struct gf_flock *flock_use = NULL; + int call_count = 0; + int i = 0; + int piggyback = 0; + afr_fd_ctx_t *fd_ctx = NULL; + + + local = frame->local; + int_lock = &local->internal_lock; + priv = this->private; + + inodelk = afr_get_inodelk (int_lock, int_lock->domain); + + flock.l_start = inodelk->flock.l_start; + flock.l_len = inodelk->flock.l_len; + flock.l_type = F_UNLCK; + + full_flock.l_type = F_UNLCK; + call_count = afr_locked_nodes_count (inodelk->locked_nodes, + priv->child_count); + + int_lock->lk_call_count = call_count; + + if (!call_count) { + gf_log (this->name, GF_LOG_TRACE, + "No internal locks unlocked"); + int_lock->lock_cbk (frame, this); + goto out; + } + + if (local->fd) + fd_ctx = afr_fd_ctx_get (local->fd, this); + + for (i = 0; i < priv->child_count; i++) { + if ((inodelk->locked_nodes[i] & LOCKED_YES) != LOCKED_YES) + continue; + + if (local->fd) { + flock_use = &flock; + if (!local->transaction.eager_lock[i]) { + goto wind; + } + + piggyback = 0; + + LOCK (&local->fd->lock); + { + if (fd_ctx->lock_piggyback[i]) { + fd_ctx->lock_piggyback[i]--; + piggyback = 1; + } else { + fd_ctx->lock_acquired[i]--; + } + } + UNLOCK (&local->fd->lock); + + if (piggyback) { + afr_unlock_inodelk_cbk (frame, (void *) (long) i, + this, 1, 0, NULL); + if (!--call_count) + break; + continue; + } + + flock_use = &full_flock; + wind: + AFR_TRACE_INODELK_IN (frame, this, + AFR_INODELK_TRANSACTION, + AFR_UNLOCK_OP, flock_use, F_SETLK, + i); + + STACK_WIND_COOKIE (frame, afr_unlock_inodelk_cbk, + (void *) (long)i, + priv->children[i], + priv->children[i]->fops->finodelk, + int_lock->domain, local->fd, + F_SETLK, flock_use, NULL); + + if (!--call_count) + break; + + } else { + AFR_TRACE_INODELK_IN (frame, this, + AFR_INODELK_TRANSACTION, + AFR_UNLOCK_OP, &flock, F_SETLK, i); + + STACK_WIND_COOKIE (frame, afr_unlock_inodelk_cbk, + (void *) (long)i, + priv->children[i], + priv->children[i]->fops->inodelk, + int_lock->domain, &local->loc, + F_SETLK, &flock, NULL); + + if (!--call_count) + break; + } + } +out: + return 0; +} + +static int32_t +afr_unlock_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_internal_lock_t *int_lock = NULL; + int32_t child_index = 0; + int lockee_no = 0; + + priv = this->private; + lockee_no = (int)((long) cookie) / priv->child_count; + child_index = (int) ((long) cookie) % priv->child_count; + + local = frame->local; + int_lock = &local->internal_lock; + + AFR_TRACE_ENTRYLK_OUT (frame, this, AFR_ENTRYLK_TRANSACTION, + AFR_UNLOCK_OP, + int_lock->lockee[lockee_no].basename, op_ret, + op_errno, (int) ((long)cookie)); + + if (op_ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "%s: unlock failed on %d, reason: %s", + local->loc.path, child_index, strerror (op_errno)); + } + + int_lock->lockee[lockee_no].locked_nodes[child_index] &= LOCKED_NO; + afr_unlock_common_cbk (frame, cookie, this, op_ret, op_errno, NULL); + + return 0; +} + +static int +afr_unlock_entrylk (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = 0; + int index = 0; + int lockee_no = 0; + int copies = 0; + int i = -1; + + local = frame->local; + int_lock = &local->internal_lock; + priv = this->private; + copies = priv->child_count; + + call_count = afr_lockee_locked_nodes_count (int_lock); + + int_lock->lk_call_count = call_count; + + if (!call_count){ + gf_log (this->name, GF_LOG_TRACE, + "No internal locks unlocked"); + int_lock->lock_cbk (frame, this); + goto out; + } + + for (i = 0; i < int_lock->lockee_count * priv->child_count; i++) { + lockee_no = i / copies; + index = i % copies; + if (int_lock->lockee[lockee_no].locked_nodes[index] & LOCKED_YES) { + AFR_TRACE_ENTRYLK_IN (frame, this, AFR_ENTRYLK_NB_TRANSACTION, + AFR_UNLOCK_OP, + int_lock->lockee[lockee_no].basename, + i); + + STACK_WIND_COOKIE (frame, afr_unlock_entrylk_cbk, + (void *) (long) i, + priv->children[index], + priv->children[index]->fops->entrylk, + int_lock->domain, + &int_lock->lockee[lockee_no].loc, + int_lock->lockee[lockee_no].basename, + ENTRYLK_UNLOCK, ENTRYLK_WRLCK, NULL); + + if (!--call_count) + break; + } + } + +out: + return 0; + +} + +static int32_t +afr_lock_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int cky = (long) cookie; + int child_index = 0; + int lockee_no = 0; + + priv = this->private; + local = frame->local; + int_lock = &local->internal_lock; + + child_index = ((int)cky) % priv->child_count; + lockee_no = ((int)cky) / priv->child_count; + + LOCK (&frame->lock); + { + if (op_ret == -1) { + if (op_errno == ENOSYS) { + /* return ENOTSUP */ + gf_log (this->name, GF_LOG_ERROR, + "subvolume does not support locking. " + "please load features/locks xlator on server"); + local->op_ret = op_ret; + int_lock->lock_op_ret = op_ret; + } + + local->op_errno = op_errno; + int_lock->lock_op_errno = op_errno; + } + + int_lock->lk_attempted_count++; + } + UNLOCK (&frame->lock); + + if ((op_ret == -1) && + (op_errno == ENOSYS)) { + afr_unlock (frame, this); + } else { + if (op_ret == 0) { + if (local->transaction.type == AFR_ENTRY_TRANSACTION || + local->transaction.type == AFR_ENTRY_RENAME_TRANSACTION) { + int_lock->lockee[lockee_no].locked_nodes[child_index] |= LOCKED_YES; + int_lock->lockee[lockee_no].locked_count++; + int_lock->entrylk_lock_count++; + } else { + int_lock->locked_nodes[child_index] |= LOCKED_YES; + int_lock->lock_count++; + } + } + afr_lock_blocking (frame, this, cky + 1); + } + + return 0; +} + +static int32_t +afr_blocking_inodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + AFR_TRACE_INODELK_OUT (frame, this, AFR_INODELK_TRANSACTION, + AFR_LOCK_OP, NULL, op_ret, + op_errno, (long) cookie); + + afr_lock_cbk (frame, cookie, this, op_ret, op_errno, xdata); + return 0; + +} + +static int32_t +afr_blocking_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + AFR_TRACE_ENTRYLK_OUT (frame, this, AFR_ENTRYLK_TRANSACTION, + AFR_LOCK_OP, NULL, op_ret, + op_errno, (long)cookie); + + afr_lock_cbk (frame, cookie, this, op_ret, op_errno, xdata); + return 0; +} + +static int +afr_copy_locked_nodes (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_inodelk_t *inodelk = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + + priv = this->private; + local = frame->local; + int_lock = &local->internal_lock; + + switch (local->transaction.type) { + case AFR_DATA_TRANSACTION: + case AFR_METADATA_TRANSACTION: + inodelk = afr_get_inodelk (int_lock, int_lock->domain); + memcpy (inodelk->locked_nodes, int_lock->locked_nodes, + sizeof (*inodelk->locked_nodes) * priv->child_count); + inodelk->lock_count = int_lock->lock_count; + break; + + case AFR_ENTRY_RENAME_TRANSACTION: + case AFR_ENTRY_TRANSACTION: + /*entrylk_count is being used in both non-blocking and blocking + * modes */ + break; + } + + return 0; + +} + +static inline gf_boolean_t +afr_is_entrylk (afr_internal_lock_t *int_lock, + afr_transaction_type trans_type) +{ + gf_boolean_t is_entrylk = _gf_false; + + if ((int_lock->transaction_lk_type == AFR_SELFHEAL_LK) && + int_lock->selfheal_lk_type == AFR_ENTRY_SELF_HEAL_LK) { + + is_entrylk = _gf_true; + + } else if ((int_lock->transaction_lk_type == AFR_TRANSACTION_LK) && + (trans_type == AFR_ENTRY_TRANSACTION || + trans_type == AFR_ENTRY_RENAME_TRANSACTION)) { + + is_entrylk = _gf_true; + + } else { + is_entrylk = _gf_false; + } + + return is_entrylk; +} + +static gf_boolean_t +_is_lock_wind_needed (afr_local_t *local, int child_index) +{ + if (!local->child_up[child_index]) + return _gf_false; + + return _gf_true; +} + +int +afr_lock_blocking (call_frame_t *frame, xlator_t *this, int cookie) +{ + afr_internal_lock_t *int_lock = NULL; + afr_inodelk_t *inodelk = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + struct gf_flock flock = {0,}; + uint64_t ctx = 0; + int ret = 0; + int child_index = 0; + int lockee_no = 0; + gf_boolean_t is_entrylk = _gf_false; + + local = frame->local; + int_lock = &local->internal_lock; + priv = this->private; + child_index = cookie % priv->child_count; + lockee_no = cookie / priv->child_count; + is_entrylk = afr_is_entrylk (int_lock, local->transaction.type); + + + if (!is_entrylk) { + inodelk = afr_get_inodelk (int_lock, int_lock->domain); + flock.l_start = inodelk->flock.l_start; + flock.l_len = inodelk->flock.l_len; + flock.l_type = inodelk->flock.l_type; + } + + if (local->fd) { + ret = fd_ctx_get (local->fd, this, &ctx); + + if (ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "unable to get fd ctx for fd=%p", + local->fd); + + local->op_ret = -1; + int_lock->lock_op_ret = -1; + + afr_copy_locked_nodes (frame, this); + + afr_unlock (frame, this); + + return 0; + } + } + + if (int_lock->lk_expected_count == int_lock->lk_attempted_count) { + if ((is_entrylk && int_lock->entrylk_lock_count == 0) || + (!is_entrylk && int_lock->lock_count == 0)) { + gf_log (this->name, GF_LOG_INFO, + "unable to lock on even one child"); + + local->op_ret = -1; + int_lock->lock_op_ret = -1; + + afr_copy_locked_nodes (frame, this); + + afr_unlock(frame, this); + + return 0; + } + } + + if (int_lock->lk_expected_count == int_lock->lk_attempted_count) { + /* we're done locking */ + + gf_log (this->name, GF_LOG_DEBUG, + "we're done locking"); + + afr_copy_locked_nodes (frame, this); + + int_lock->lock_op_ret = 0; + int_lock->lock_cbk (frame, this); + return 0; + } + + if (!_is_lock_wind_needed (local, child_index)) { + afr_lock_blocking (frame, this, cookie + 1); + return 0; + } + + switch (local->transaction.type) { + case AFR_DATA_TRANSACTION: + case AFR_METADATA_TRANSACTION: + + if (local->fd) { + AFR_TRACE_INODELK_IN (frame, this, + AFR_INODELK_TRANSACTION, + AFR_LOCK_OP, &flock, F_SETLKW, + child_index); + + STACK_WIND_COOKIE (frame, afr_blocking_inodelk_cbk, + (void *) (long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->finodelk, + int_lock->domain, local->fd, + F_SETLKW, &flock, NULL); + + } else { + AFR_TRACE_INODELK_IN (frame, this, + AFR_INODELK_TRANSACTION, + AFR_LOCK_OP, &flock, F_SETLKW, + child_index); + + STACK_WIND_COOKIE (frame, afr_blocking_inodelk_cbk, + (void *) (long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->inodelk, + int_lock->domain, &local->loc, + F_SETLKW, &flock, NULL); + } + + break; + + case AFR_ENTRY_RENAME_TRANSACTION: + case AFR_ENTRY_TRANSACTION: + /*Accounting for child_index increments on 'down' + *and 'fd-less' children */ + + if (local->fd) { + AFR_TRACE_ENTRYLK_IN (frame, this, AFR_ENTRYLK_TRANSACTION, + AFR_LOCK_OP, + int_lock->lockee[lockee_no].basename, + cookie); + + STACK_WIND_COOKIE (frame, afr_blocking_entrylk_cbk, + (void *) (long) cookie, + priv->children[child_index], + priv->children[child_index]->fops->fentrylk, + int_lock->domain, local->fd, + int_lock->lockee[lockee_no].basename, + ENTRYLK_LOCK, ENTRYLK_WRLCK, NULL); + } else { + AFR_TRACE_ENTRYLK_IN (frame, this, + AFR_ENTRYLK_TRANSACTION, + AFR_LOCK_OP, local->transaction.basename, + child_index); + + STACK_WIND_COOKIE (frame, afr_blocking_entrylk_cbk, + (void *) (long) cookie, + priv->children[child_index], + priv->children[child_index]->fops->entrylk, + int_lock->domain, + &int_lock->lockee[lockee_no].loc, + int_lock->lockee[lockee_no].basename, + ENTRYLK_LOCK, ENTRYLK_WRLCK, NULL); + } + + break; + } + + return 0; +} + +int32_t +afr_blocking_lock (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int up_count = 0; + + priv = this->private; + local = frame->local; + int_lock = &local->internal_lock; + + switch (local->transaction.type) { + case AFR_DATA_TRANSACTION: + case AFR_METADATA_TRANSACTION: + initialize_inodelk_variables (frame, this); + break; + + case AFR_ENTRY_RENAME_TRANSACTION: + case AFR_ENTRY_TRANSACTION: + up_count = afr_up_children_count (local->child_up, + priv->child_count); + int_lock->lk_call_count = int_lock->lk_expected_count + = (int_lock->lockee_count * + up_count); + initialize_entrylk_variables (frame, this); + break; + } + + afr_lock_blocking (frame, this, 0); + + return 0; +} + +static int32_t +afr_nonblocking_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + int call_count = 0; + int child_index = (long) cookie; + int copies = 0; + int index = 0; + int lockee_no = 0; + afr_private_t *priv = NULL; + + priv = this->private; + + copies = priv->child_count; + index = child_index % copies; + lockee_no = child_index / copies; + + local = frame->local; + int_lock = &local->internal_lock; + + AFR_TRACE_ENTRYLK_OUT (frame, this, AFR_ENTRYLK_TRANSACTION, + AFR_LOCK_OP, + int_lock->lockee[lockee_no].basename, op_ret, + op_errno, (long) cookie); + + LOCK (&frame->lock); + { + if (op_ret < 0 ) { + if (op_errno == ENOSYS) { + /* return ENOTSUP */ + gf_log (this->name, GF_LOG_ERROR, + "subvolume does not support locking. " + "please load features/locks xlator on server"); + local->op_ret = op_ret; + int_lock->lock_op_ret = op_ret; + + int_lock->lock_op_errno = op_errno; + local->op_errno = op_errno; + } + } else if (op_ret == 0) { + int_lock->lockee[lockee_no].locked_nodes[index] |= \ + LOCKED_YES; + int_lock->lockee[lockee_no].locked_count++; + int_lock->entrylk_lock_count++; + } + + call_count = --int_lock->lk_call_count; + } + UNLOCK (&frame->lock); + + if (call_count == 0) { + gf_log (this->name, GF_LOG_TRACE, + "Last locking reply received"); + /* all locks successful. Proceed to call FOP */ + if (int_lock->entrylk_lock_count == + int_lock->lk_expected_count) { + gf_log (this->name, GF_LOG_TRACE, + "All servers locked. Calling the cbk"); + int_lock->lock_op_ret = 0; + int_lock->lock_cbk (frame, this); + } + /* Not all locks were successful. Unlock and try locking + again, this time with serially blocking locks */ + else { + gf_log (this->name, GF_LOG_TRACE, + "%d servers locked. Trying again with blocking calls", + int_lock->lock_count); + + afr_unlock(frame, this); + } + } + + return 0; +} + +int +afr_nonblocking_entrylk (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_fd_ctx_t *fd_ctx = NULL; + int copies = 0; + int index = 0; + int lockee_no = 0; + int32_t call_count = 0; + int i = 0; + + local = frame->local; + int_lock = &local->internal_lock; + priv = this->private; + + copies = priv->child_count; + initialize_entrylk_variables (frame, this); + + if (local->fd) { + fd_ctx = afr_fd_ctx_get (local->fd, this); + if (!fd_ctx) { + gf_log (this->name, GF_LOG_INFO, + "unable to get fd ctx for fd=%p", + local->fd); + + local->op_ret = -1; + int_lock->lock_op_ret = -1; + local->op_errno = EINVAL; + int_lock->lock_op_errno = EINVAL; + + afr_unlock (frame, this); + return -1; + } + + call_count = int_lock->lockee_count * internal_lock_count (frame, this); + int_lock->lk_call_count = call_count; + int_lock->lk_expected_count = call_count; + + if (!call_count) { + gf_log (this->name, GF_LOG_INFO, + "fd not open on any subvolumes. aborting."); + afr_unlock (frame, this); + goto out; + } + + /* Send non-blocking entrylk calls only on up children + and where the fd has been opened */ + for (i = 0; i < int_lock->lockee_count*priv->child_count; i++) { + index = i%copies; + lockee_no = i/copies; + if (local->child_up[index]) { + AFR_TRACE_ENTRYLK_IN (frame, this, AFR_ENTRYLK_NB_TRANSACTION, + AFR_LOCK_OP, + int_lock->lockee[lockee_no].basename, + i); + + STACK_WIND_COOKIE (frame, afr_nonblocking_entrylk_cbk, + (void *) (long) i, + priv->children[index], + priv->children[index]->fops->fentrylk, + this->name, local->fd, + int_lock->lockee[lockee_no].basename, + ENTRYLK_LOCK_NB, ENTRYLK_WRLCK, + NULL); + if (!--call_count) + break; + } + } + } else { + call_count = int_lock->lockee_count * internal_lock_count (frame, this); + int_lock->lk_call_count = call_count; + int_lock->lk_expected_count = call_count; + + for (i = 0; i < int_lock->lockee_count*priv->child_count; i++) { + index = i%copies; + lockee_no = i/copies; + if (local->child_up[index]) { + AFR_TRACE_ENTRYLK_IN (frame, this, AFR_ENTRYLK_NB_TRANSACTION, + AFR_LOCK_OP, + int_lock->lockee[lockee_no].basename, + i); + + STACK_WIND_COOKIE (frame, afr_nonblocking_entrylk_cbk, + (void *) (long) i, + priv->children[index], + priv->children[index]->fops->entrylk, + this->name, &int_lock->lockee[lockee_no].loc, + int_lock->lockee[lockee_no].basename, + ENTRYLK_LOCK_NB, ENTRYLK_WRLCK, + NULL); + + if (!--call_count) + break; + } + } + } +out: + return 0; +} + +int32_t +afr_nonblocking_inodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_internal_lock_t *int_lock = NULL; + afr_inodelk_t *inodelk = NULL; + afr_local_t *local = NULL; + int call_count = 0; + int child_index = (long) cookie; + afr_fd_ctx_t *fd_ctx = NULL; + + + local = frame->local; + int_lock = &local->internal_lock; + inodelk = afr_get_inodelk (int_lock, int_lock->domain); + + AFR_TRACE_INODELK_OUT (frame, this, AFR_INODELK_NB_TRANSACTION, + AFR_LOCK_OP, NULL, op_ret, + op_errno, (long) cookie); + + if (local->fd) + fd_ctx = afr_fd_ctx_get (local->fd, this); + + LOCK (&frame->lock); + { + if (op_ret < 0) { + if (op_errno == ENOSYS) { + /* return ENOTSUP */ + gf_log (this->name, GF_LOG_ERROR, + "subvolume does not support locking. " + "please load features/locks xlator on " + "server"); + local->op_ret = op_ret; + int_lock->lock_op_ret = op_ret; + int_lock->lock_op_errno = op_errno; + local->op_errno = op_errno; + } + if (local->transaction.eager_lock) + local->transaction.eager_lock[child_index] = 0; + } else { + inodelk->locked_nodes[child_index] |= LOCKED_YES; + inodelk->lock_count++; + + if (local->transaction.eager_lock && + local->transaction.eager_lock[child_index] && + local->fd) { + /* piggybacked */ + if (op_ret == 1) { + /* piggybacked */ + } else if (op_ret == 0) { + /* lock acquired from server */ + fd_ctx->lock_acquired[child_index]++; + } + } + } + + call_count = --int_lock->lk_call_count; + } + UNLOCK (&frame->lock); + + if (call_count == 0) { + gf_log (this->name, GF_LOG_TRACE, + "Last inode locking reply received"); + /* all locks successful. Proceed to call FOP */ + if (inodelk->lock_count == int_lock->lk_expected_count) { + gf_log (this->name, GF_LOG_TRACE, + "All servers locked. Calling the cbk"); + int_lock->lock_op_ret = 0; + int_lock->lock_cbk (frame, this); + } + /* Not all locks were successful. Unlock and try locking + again, this time with serially blocking locks */ + else { + gf_log (this->name, GF_LOG_TRACE, + "%d servers locked. Trying again with blocking calls", + int_lock->lock_count); + + afr_unlock(frame, this); + } + } + + return 0; +} + +int +afr_nonblocking_inodelk (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_inodelk_t *inodelk = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_fd_ctx_t *fd_ctx = NULL; + int32_t call_count = 0; + int i = 0; + int ret = 0; + struct gf_flock flock = {0,}; + struct gf_flock full_flock = {0,}; + struct gf_flock *flock_use = NULL; + int piggyback = 0; + + local = frame->local; + int_lock = &local->internal_lock; + priv = this->private; + + inodelk = afr_get_inodelk (int_lock, int_lock->domain); + + flock.l_start = inodelk->flock.l_start; + flock.l_len = inodelk->flock.l_len; + flock.l_type = inodelk->flock.l_type; + + full_flock.l_type = inodelk->flock.l_type; + + initialize_inodelk_variables (frame, this); + + if (local->fd) { + fd_ctx = afr_fd_ctx_get (local->fd, this); + if (!fd_ctx) { + gf_log (this->name, GF_LOG_INFO, + "unable to get fd ctx for fd=%p", + local->fd); + + local->op_ret = -1; + int_lock->lock_op_ret = -1; + local->op_errno = EINVAL; + int_lock->lock_op_errno = EINVAL; + + afr_unlock (frame, this); + ret = -1; + goto out; + } + + call_count = internal_lock_count (frame, this); + int_lock->lk_call_count = call_count; + int_lock->lk_expected_count = call_count; + + if (!call_count) { + gf_log (this->name, GF_LOG_INFO, + "fd not open on any subvolumes. aborting."); + afr_unlock (frame, this); + goto out; + } + + /* Send non-blocking inodelk calls only on up children + and where the fd has been opened */ + for (i = 0; i < priv->child_count; i++) { + if (!local->child_up[i]) + continue; + + flock_use = &flock; + if (!local->transaction.eager_lock_on) { + goto wind; + } + + piggyback = 0; + local->transaction.eager_lock[i] = 1; + + afr_set_delayed_post_op (frame, this); + + LOCK (&local->fd->lock); + { + if (fd_ctx->lock_acquired[i]) { + fd_ctx->lock_piggyback[i]++; + piggyback = 1; + } + } + UNLOCK (&local->fd->lock); + + if (piggyback) { + /* (op_ret == 1) => indicate piggybacked lock */ + afr_nonblocking_inodelk_cbk (frame, (void *) (long) i, + this, 1, 0, NULL); + if (!--call_count) + break; + continue; + } + flock_use = &full_flock; + wind: + AFR_TRACE_INODELK_IN (frame, this, + AFR_INODELK_NB_TRANSACTION, + AFR_LOCK_OP, flock_use, F_SETLK, i); + + STACK_WIND_COOKIE (frame, afr_nonblocking_inodelk_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->finodelk, + int_lock->domain, local->fd, + F_SETLK, flock_use, NULL); + + if (!--call_count) + break; + } + } else { + call_count = internal_lock_count (frame, this); + int_lock->lk_call_count = call_count; + int_lock->lk_expected_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (!local->child_up[i]) + continue; + AFR_TRACE_INODELK_IN (frame, this, + AFR_INODELK_NB_TRANSACTION, + AFR_LOCK_OP, &flock, F_SETLK, i); + + STACK_WIND_COOKIE (frame, afr_nonblocking_inodelk_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->inodelk, + int_lock->domain, &local->loc, + F_SETLK, &flock, NULL); + + if (!--call_count) + break; + } + } +out: + return ret; +} + +int32_t +afr_unlock (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + + local = frame->local; + + if (transaction_lk_op (local)) { + if (is_afr_lock_transaction (local)) + afr_unlock_inodelk (frame, this); + else + afr_unlock_entrylk (frame, this); + + } else { + if (is_afr_lock_selfheal (local)) + afr_unlock_inodelk (frame, this); + else + afr_unlock_entrylk (frame, this); + } + + return 0; +} + +int +afr_mark_locked_nodes (xlator_t *this, fd_t *fd, + unsigned char *locked_nodes) +{ + afr_private_t *priv = NULL; + afr_fd_ctx_t *fdctx = NULL; + uint64_t tmp = 0; + int ret = 0; + + priv = this->private; + + ret = afr_fd_ctx_set (this, fd); + if (ret) + goto out; + + ret = fd_ctx_get (fd, this, &tmp); + if (ret) { + gf_log (this->name, GF_LOG_INFO, + "failed to get the fd ctx"); + goto out; + } + fdctx = (afr_fd_ctx_t *) (long) tmp; + + GF_ASSERT (fdctx->locked_on); + + memcpy (fdctx->locked_on, locked_nodes, + priv->child_count); + +out: + return ret; +} + +static int +__is_fd_saved (xlator_t *this, fd_t *fd) +{ + afr_locked_fd_t *locked_fd = NULL; + afr_private_t *priv = NULL; + int found = 0; + + priv = this->private; + + list_for_each_entry (locked_fd, &priv->saved_fds, list) { + if (locked_fd->fd == fd) { + found = 1; + break; + } + } + + return found; +} + +static int +__afr_save_locked_fd (xlator_t *this, fd_t *fd) +{ + afr_private_t *priv = NULL; + afr_locked_fd_t *locked_fd = NULL; + int ret = 0; + + priv = this->private; + + locked_fd = GF_CALLOC (1, sizeof (*locked_fd), + gf_afr_mt_locked_fd); + if (!locked_fd) { + ret = -1; + goto out; + } + + locked_fd->fd = fd; + INIT_LIST_HEAD (&locked_fd->list); + + list_add_tail (&locked_fd->list, &priv->saved_fds); + +out: + return ret; +} + +int +afr_save_locked_fd (xlator_t *this, fd_t *fd) +{ + afr_private_t *priv = NULL; + int ret = 0; + + priv = this->private; + + pthread_mutex_lock (&priv->mutex); + { + if (__is_fd_saved (this, fd)) { + gf_log (this->name, GF_LOG_DEBUG, + "fd=%p already saved", fd); + goto unlock; + } + + ret = __afr_save_locked_fd (this, fd); + if (ret) { + gf_log (this->name, GF_LOG_INFO, + "fd=%p could not be saved", fd); + goto unlock; + } + } +unlock: + pthread_mutex_unlock (&priv->mutex); + + return ret; +} + +static int +afr_lock_recovery_cleanup (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_locked_fd_t *locked_fd = NULL; + + local = frame->local; + + locked_fd = local->locked_fd; + + STACK_DESTROY (frame->root); + afr_local_cleanup (local, this); + + afr_save_locked_fd (this, locked_fd->fd); + + return 0; + +} + +static int +afr_get_source_lock_recovery (xlator_t *this, fd_t *fd) +{ + afr_fd_ctx_t *fdctx = NULL; + afr_private_t *priv = NULL; + uint64_t tmp = 0; + int i = 0; + int source_child = -1; + int ret = 0; + + priv = this->private; + + ret = fd_ctx_get (fd, this, &tmp); + if (ret) + goto out; + + fdctx = (afr_fd_ctx_t *) (long) tmp; + + for (i = 0; i < priv->child_count; i++) { + if (fdctx->locked_on[i]) { + gf_log (this->name, GF_LOG_DEBUG, + "Found lock recovery source=%d", i); + source_child = i; + break; + } + } + +out: + return source_child; + +} + +int32_t +afr_get_locks_fd_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct gf_flock *lock, + dict_t *xdata); +int32_t +afr_recover_lock_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct gf_flock *lock, + dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int32_t source_child = 0; + struct gf_flock flock = {0,}; + + local = frame->local; + priv = this->private; + + if (op_ret) { + gf_log (this->name, GF_LOG_INFO, + "lock recovery failed"); + goto cleanup; + } + + source_child = local->source_child; + + memcpy (&flock, lock, sizeof (*lock)); + + STACK_WIND_COOKIE (frame, afr_get_locks_fd_cbk, + (void *) (long) source_child, + priv->children[source_child], + priv->children[source_child]->fops->lk, + local->fd, F_GETLK_FD, &flock, NULL); + + return 0; + +cleanup: + afr_lock_recovery_cleanup (frame, this); + return 0; +} + +int +afr_recover_lock (call_frame_t *frame, xlator_t *this, + struct gf_flock *flock) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int32_t lock_recovery_child = 0; + + priv = this->private; + local = frame->local; + + lock_recovery_child = local->lock_recovery_child; + + frame->root->lk_owner = flock->l_owner; + + STACK_WIND_COOKIE (frame, afr_recover_lock_cbk, + (void *) (long) lock_recovery_child, + priv->children[lock_recovery_child], + priv->children[lock_recovery_child]->fops->lk, + local->fd, F_SETLK, flock, NULL); + + return 0; +} + +static int +is_afr_lock_eol (struct gf_flock *lock) +{ + int ret = 0; + + if ((lock->l_type == GF_LK_EOL)) + ret = 1; + + return ret; +} + +int32_t +afr_get_locks_fd_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct gf_flock *lock, + dict_t *xdata) +{ + if (op_ret) { + gf_log (this->name, GF_LOG_INFO, + "Failed to get locks on fd"); + goto cleanup; + } + + gf_log (this->name, GF_LOG_DEBUG, + "Got a lock on fd"); + + if (is_afr_lock_eol (lock)) { + gf_log (this->name, GF_LOG_INFO, + "Reached EOL on locks on fd"); + goto cleanup; + } + + afr_recover_lock (frame, this, lock); + + return 0; + +cleanup: + afr_lock_recovery_cleanup (frame, this); + + return 0; +} + +static int +afr_lock_recovery (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + fd_t *fd = NULL; + int ret = 0; + int32_t source_child = 0; + struct gf_flock flock = {0,}; + + priv = this->private; + local = frame->local; + + fd = local->fd; + + source_child = afr_get_source_lock_recovery (this, fd); + if (source_child < 0) { + gf_log (this->name, GF_LOG_ERROR, + "Could not recover locks due to lock " + "split brain"); + ret = -1; + goto out; + } + + local->source_child = source_child; + + /* the flock can be zero filled as we're querying incrementally + the locks held on the fd. + */ + STACK_WIND_COOKIE (frame, afr_get_locks_fd_cbk, + (void *) (long) source_child, + priv->children[source_child], + priv->children[source_child]->fops->lk, + local->fd, F_GETLK_FD, &flock, NULL); + +out: + return ret; +} + + +static int +afr_mark_fd_opened (xlator_t *this, fd_t *fd, int32_t child_index) +{ + afr_fd_ctx_t *fdctx = NULL; + uint64_t tmp = 0; + int ret = 0; + + ret = fd_ctx_get (fd, this, &tmp); + if (ret) + goto out; + + fdctx = (afr_fd_ctx_t *) (long) tmp; + + fdctx->opened_on[child_index] = AFR_FD_OPENED; + +out: + return ret; +} + +int32_t +afr_lock_recovery_preopen_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, fd_t *fd, + dict_t *xdata) +{ + int32_t child_index = (long )cookie; + int ret = 0; + + if (op_ret) { + gf_log (this->name, GF_LOG_INFO, + "Reopen during lock-recovery failed"); + goto cleanup; + } + + gf_log (this->name, GF_LOG_DEBUG, + "Open succeeded => proceed to recover locks"); + + ret = afr_lock_recovery (frame, this); + if (ret) { + gf_log (this->name, GF_LOG_INFO, + "Lock recovery failed"); + goto cleanup; + } + + ret = afr_mark_fd_opened (this, fd, child_index); + if (ret) { + gf_log (this->name, GF_LOG_INFO, + "Marking fd open failed"); + goto cleanup; + } + + return 0; + +cleanup: + afr_lock_recovery_cleanup (frame, this); + return 0; +} + +static int +afr_lock_recovery_preopen (call_frame_t *frame, xlator_t *this) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + uint64_t tmp = 0; + afr_fd_ctx_t *fdctx = NULL; + loc_t loc = {0,}; + int32_t child_index = 0; + int ret = 0; + + priv = this->private; + local = frame->local; + + GF_ASSERT (local && local->fd); + + ret = fd_ctx_get (local->fd, this, &tmp); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to get the context of fd", + uuid_utoa (local->fd->inode->gfid)); + fdctx = (afr_fd_ctx_t *) (long) tmp; + /* TODO: instead we should return from the function */ + GF_ASSERT (fdctx); + + child_index = local->lock_recovery_child; + + inode_path (local->fd->inode, NULL, (char **)&loc.path); + loc.name = strrchr (loc.path, '/'); + loc.inode = inode_ref (local->fd->inode); + loc.parent = inode_parent (local->fd->inode, 0, NULL); + + + STACK_WIND_COOKIE (frame, afr_lock_recovery_preopen_cbk, + (void *)(long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->open, + &loc, fdctx->flags, local->fd, NULL); + + return 0; +} + +static int +is_fd_opened (fd_t *fd, int32_t child_index) +{ + afr_fd_ctx_t *fdctx = NULL; + uint64_t tmp = 0; + int ret = 0; + + ret = fd_ctx_get (fd, THIS, &tmp); + if (ret) + goto out; + + fdctx = (afr_fd_ctx_t *) (long) tmp; + + if (fdctx->opened_on[child_index] == AFR_FD_OPENED) + ret = 1; + +out: + return ret; +} + +int +afr_attempt_lock_recovery (xlator_t *this, int32_t child_index) +{ + call_frame_t *frame = NULL; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_locked_fd_t *locked_fd = NULL; + afr_locked_fd_t *tmp = NULL; + int ret = -1; + struct list_head locks_list = {0,}; + int32_t op_errno = 0; + + + priv = this->private; + + if (list_empty (&priv->saved_fds)) + goto out; + + frame = create_frame (this, this->ctx->pool); + if (!frame) { + ret = -1; + goto out; + } + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) { + ret = -1; + goto out; + } + + frame->local = local; + + INIT_LIST_HEAD (&locks_list); + + pthread_mutex_lock (&priv->mutex); + { + list_splice_init (&priv->saved_fds, &locks_list); + } + pthread_mutex_unlock (&priv->mutex); + + list_for_each_entry_safe (locked_fd, tmp, + &locks_list, list) { + + list_del_init (&locked_fd->list); + + local->fd = fd_ref (locked_fd->fd); + local->lock_recovery_child = child_index; + local->locked_fd = locked_fd; + + if (!is_fd_opened (locked_fd->fd, child_index)) { + gf_log (this->name, GF_LOG_DEBUG, + "attempting open before lock " + "recovery"); + afr_lock_recovery_preopen (frame, this); + } else { + gf_log (this->name, GF_LOG_DEBUG, + "attempting lock recovery " + "without a preopen"); + afr_lock_recovery (frame, this); + } + } + +out: + if ((ret < 0) && frame) + AFR_STACK_DESTROY (frame); + return ret; +} + +int +afr_lk_transfer_datalock (call_frame_t *dst, call_frame_t *src, char *dom, + unsigned int child_count) +{ + afr_local_t *dst_local = NULL; + afr_local_t *src_local = NULL; + afr_internal_lock_t *dst_lock = NULL; + afr_internal_lock_t *src_lock = NULL; + afr_inodelk_t *dst_inodelk = NULL; + afr_inodelk_t *src_inodelk = NULL; + int ret = -1; + + src_local = src->local; + src_lock = &src_local->internal_lock; + src_inodelk = afr_get_inodelk (src_lock, dom); + dst_local = dst->local; + dst_lock = &dst_local->internal_lock; + dst_inodelk = afr_get_inodelk (dst_lock, dom); + if (!dst_inodelk || !src_inodelk) + goto out; + if (src_inodelk->locked_nodes) { + memcpy (dst_inodelk->locked_nodes, src_inodelk->locked_nodes, + sizeof (*dst_inodelk->locked_nodes) * child_count); + memset (src_inodelk->locked_nodes, 0, + sizeof (*src_inodelk->locked_nodes) * child_count); + } + + dst_lock->transaction_lk_type = src_lock->transaction_lk_type; + dst_lock->selfheal_lk_type = src_lock->selfheal_lk_type; + dst_inodelk->lock_count = src_inodelk->lock_count; + src_inodelk->lock_count = 0; + ret = 0; +out: + return ret; +} diff --git a/xlators/cluster/afr/src/afr-mem-types.h b/xlators/cluster/afr/src/afr-mem-types.h new file mode 100644 index 000000000..73594f265 --- /dev/null +++ b/xlators/cluster/afr/src/afr-mem-types.h @@ -0,0 +1,51 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + + +#ifndef __AFR_MEM_TYPES_H__ +#define __AFR_MEM_TYPES_H__ + +#include "mem-types.h" + +enum gf_afr_mem_types_ { + gf_afr_mt_iovec = gf_common_mt_end + 1, + gf_afr_mt_afr_fd_ctx_t, + gf_afr_mt_afr_private_t, + gf_afr_mt_int32_t, + gf_afr_mt_char, + gf_afr_mt_xattr_key, + gf_afr_mt_dict_t, + gf_afr_mt_xlator_t, + gf_afr_mt_iatt, + gf_afr_mt_int, + gf_afr_mt_afr_node_character, + gf_afr_mt_sh_diff_loop_state, + gf_afr_mt_uint8_t, + gf_afr_mt_loc_t, + gf_afr_mt_entry_name, + gf_afr_mt_pump_priv, + gf_afr_mt_locked_fd, + gf_afr_mt_inode_ctx_t, + gf_afr_fd_paused_call_t, + gf_afr_mt_crawl_data_t, + gf_afr_mt_brick_pos_t, + gf_afr_mt_shd_bool_t, + gf_afr_mt_shd_timer_t, + gf_afr_mt_shd_event_t, + gf_afr_mt_time_t, + gf_afr_mt_pos_data_t, + gf_afr_mt_reply_t, + gf_afr_mt_stats_t, + gf_afr_mt_shd_crawl_event_t, + gf_afr_mt_uint64_t, + gf_afr_mt_end +}; +#endif + diff --git a/xlators/cluster/afr/src/afr-open.c b/xlators/cluster/afr/src/afr-open.c new file mode 100644 index 000000000..643a5d692 --- /dev/null +++ b/xlators/cluster/afr/src/afr-open.c @@ -0,0 +1,382 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#include <libgen.h> +#include <unistd.h> +#include <fnmatch.h> +#include <sys/time.h> +#include <stdlib.h> +#include <signal.h> + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "glusterfs.h" +#include "afr.h" +#include "dict.h" +#include "xlator.h" +#include "hashfn.h" +#include "logging.h" +#include "stack.h" +#include "list.h" +#include "call-stub.h" +#include "defaults.h" +#include "common-utils.h" +#include "compat-errno.h" +#include "compat.h" +#include "byte-order.h" +#include "statedump.h" + +#include "fd.h" + +#include "afr-inode-read.h" +#include "afr-inode-write.h" +#include "afr-dir-read.h" +#include "afr-dir-write.h" +#include "afr-transaction.h" +#include "afr-self-heal.h" +#include "afr-self-heal-common.h" + +int +afr_stale_child_up (afr_local_t *local, xlator_t *this) +{ + int i = 0; + afr_private_t *priv = NULL; + int up = -1; + + priv = this->private; + + if (!local->fresh_children) + local->fresh_children = afr_children_create (priv->child_count); + if (!local->fresh_children) + goto out; + + afr_inode_get_read_ctx (this, local->fd->inode, local->fresh_children); + if (priv->child_count == afr_get_children_count (local->fresh_children, + priv->child_count)) + goto out; + + for (i = 0; i < priv->child_count; i++) { + if (!local->child_up[i]) + continue; + if (afr_is_child_present (local->fresh_children, + priv->child_count, i)) + continue; + up = i; + break; + } +out: + return up; +} + +void +afr_perform_data_self_heal (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + inode_t *inode = NULL; + int st_child = -1; + char reason[64] = {0}; + + local = frame->local; + sh = &local->self_heal; + inode = local->fd->inode; + + if (!IA_ISREG (inode->ia_type)) + goto out; + + st_child = afr_stale_child_up (local, this); + if (st_child < 0) + goto out; + + sh->do_data_self_heal = _gf_true; + sh->do_metadata_self_heal = _gf_true; + sh->do_gfid_self_heal = _gf_true; + sh->do_missing_entry_self_heal = _gf_true; + + snprintf (reason, sizeof (reason), "stale subvolume %d detected", + st_child); + afr_launch_self_heal (frame, this, inode, _gf_true, inode->ia_type, + reason, NULL, NULL); +out: + return; +} + +int +afr_open_ftruncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + afr_local_t * local = frame->local; + afr_private_t *priv = NULL; + + priv = this->private; + if (afr_open_only_data_self_heal (priv->data_self_heal)) + afr_perform_data_self_heal (frame, this); + AFR_STACK_UNWIND (open, frame, local->op_ret, local->op_errno, + local->fd, xdata); + return 0; +} + + +int +afr_open_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + fd_t *fd, dict_t *xdata) +{ + afr_local_t * local = NULL; + int ret = 0; + int call_count = -1; + int child_index = (long) cookie; + afr_private_t *priv = NULL; + + priv = this->private; + local = frame->local; + + LOCK (&frame->lock); + { + if (op_ret == -1) { + local->op_errno = op_errno; + } + + if (op_ret >= 0) { + local->op_ret = op_ret; + local->success_count++; + + ret = afr_child_fd_ctx_set (this, fd, child_index, + local->cont.open.flags); + if (ret) { + local->op_ret = -1; + local->op_errno = -ret; + goto unlock; + } + } + } +unlock: + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) { + if ((local->cont.open.flags & O_TRUNC) + && (local->op_ret >= 0)) { + STACK_WIND (frame, afr_open_ftruncate_cbk, + this, this->fops->ftruncate, + fd, 0, NULL); + } else { + if (afr_open_only_data_self_heal (priv->data_self_heal)) + afr_perform_data_self_heal (frame, this); + AFR_STACK_UNWIND (open, frame, local->op_ret, + local->op_errno, local->fd, xdata); + } + } + + return 0; +} + +int +afr_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags, + fd_t *fd, dict_t *xdata) +{ + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + int i = 0; + int ret = -1; + int32_t call_count = 0; + int32_t op_errno = 0; + int32_t wind_flags = flags & (~O_TRUNC); + //We can't let truncation to happen outside transaction. + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + VALIDATE_OR_GOTO (loc, out); + + priv = this->private; + + if (flags & (O_CREAT|O_TRUNC)) { + QUORUM_CHECK(open,out); + } + + if (afr_is_split_brain (this, loc->inode)) { + /* self-heal failed */ + gf_log (this->name, GF_LOG_WARNING, + "failed to open as split brain seen, returning EIO"); + op_errno = EIO; + goto out; + } + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + call_count = local->call_count; + loc_copy (&local->loc, loc); + + local->cont.open.flags = flags; + + local->fd = fd_ref (fd); + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND_COOKIE (frame, afr_open_cbk, (void *) (long) i, + priv->children[i], + priv->children[i]->fops->open, + loc, wind_flags, fd, xdata); + + if (!--call_count) + break; + } + } + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (open, frame, -1, op_errno, fd, xdata); + + return 0; +} + +int +afr_openfd_fix_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, fd_t *fd, + dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_fd_ctx_t *fd_ctx = NULL; + int call_count = 0; + int child_index = (long) cookie; + + priv = this->private; + local = frame->local; + + if (op_ret >= 0) { + gf_log (this->name, GF_LOG_DEBUG, "fd for %s opened " + "successfully on subvolume %s", local->loc.path, + priv->children[child_index]->name); + } else { + gf_log (this->name, GF_LOG_ERROR, "Failed to open %s " + "on subvolume %s", local->loc.path, + priv->children[child_index]->name); + } + + fd_ctx = afr_fd_ctx_get (local->fd, this); + if (!fd_ctx) { + gf_log (this->name, GF_LOG_WARNING, + "failed to get fd context, %p", local->fd); + goto out; + } + + LOCK (&local->fd->lock); + { + if (op_ret >= 0) { + fd_ctx->opened_on[child_index] = AFR_FD_OPENED; + } else { + fd_ctx->opened_on[child_index] = AFR_FD_NOT_OPENED; + } + } + UNLOCK (&local->fd->lock); +out: + call_count = afr_frame_return (frame); + if (call_count == 0) + AFR_STACK_DESTROY (frame); + + return 0; +} + +void +afr_fix_open (xlator_t *this, fd_t *fd, size_t need_open_count, int *need_open) +{ + afr_private_t *priv = NULL; + int i = 0; + call_frame_t *frame = NULL; + afr_local_t *local = NULL; + int ret = -1; + int32_t op_errno = 0; + afr_fd_ctx_t *fd_ctx = NULL; + + priv = this->private; + + if (!afr_is_fd_fixable (fd) || !need_open || !need_open_count) + goto out; + + fd_ctx = afr_fd_ctx_get (fd, this); + if (!fd_ctx) { + ret = -1; + goto out; + } + + frame = create_frame (this, this->ctx->pool); + if (!frame) { + ret = -1; + goto out; + } + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + local->loc.inode = inode_ref (fd->inode); + ret = loc_path (&local->loc, NULL); + if (ret < 0) + goto out; + + local->fd = fd_ref (fd); + local->call_count = need_open_count; + + gf_log (this->name, GF_LOG_DEBUG, "need open count: %zd", + need_open_count); + + for (i = 0; i < priv->child_count; i++) { + if (!need_open[i]) + continue; + + if (IA_IFDIR == fd->inode->ia_type) { + gf_log (this->name, GF_LOG_DEBUG, + "opening fd for dir %s on subvolume %s", + local->loc.path, priv->children[i]->name); + + STACK_WIND_COOKIE (frame, afr_openfd_fix_open_cbk, + (void*) (long) i, + priv->children[i], + priv->children[i]->fops->opendir, + &local->loc, local->fd, + NULL); + } else { + gf_log (this->name, GF_LOG_DEBUG, + "opening fd for file %s on subvolume %s", + local->loc.path, priv->children[i]->name); + + STACK_WIND_COOKIE (frame, afr_openfd_fix_open_cbk, + (void *)(long) i, + priv->children[i], + priv->children[i]->fops->open, + &local->loc, + fd_ctx->flags & (~O_TRUNC), + local->fd, NULL); + } + + } + op_errno = 0; + ret = 0; +out: + if (op_errno) + ret = -1; //For handling ALLOC_OR_GOTO + if (ret && frame) + AFR_STACK_DESTROY (frame); +} diff --git a/xlators/cluster/afr/src/afr-self-heal-algorithm.c b/xlators/cluster/afr/src/afr-self-heal-algorithm.c new file mode 100644 index 000000000..83846f152 --- /dev/null +++ b/xlators/cluster/afr/src/afr-self-heal-algorithm.c @@ -0,0 +1,837 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + + +#include <openssl/md5.h> +#include "glusterfs.h" +#include "afr.h" +#include "xlator.h" +#include "dict.h" +#include "xlator.h" +#include "hashfn.h" +#include "logging.h" +#include "stack.h" +#include "list.h" +#include "call-stub.h" +#include "defaults.h" +#include "common-utils.h" +#include "compat-errno.h" +#include "compat.h" +#include "byte-order.h" + +#include "afr-transaction.h" +#include "afr-self-heal.h" +#include "afr-self-heal-common.h" +#include "afr-self-heal-algorithm.h" + +/* + This file contains the various self-heal algorithms +*/ + +static int +sh_loop_driver (call_frame_t *sh_frame, xlator_t *this, + gf_boolean_t is_first_call, call_frame_t *old_loop_frame); +static int +sh_loop_return (call_frame_t *sh_frame, xlator_t *this, call_frame_t *loop_frame, + int32_t op_ret, int32_t op_errno); +static int +sh_destroy_frame (call_frame_t *frame, xlator_t *this) +{ + if (!frame) + goto out; + + AFR_STACK_DESTROY (frame); +out: + return 0; +} + +static void +sh_private_cleanup (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_sh_algo_private_t *sh_priv = NULL; + + local = frame->local; + sh = &local->self_heal; + + sh_priv = sh->private; + GF_FREE (sh_priv); +} + +static int +sh_number_of_writes_needed (unsigned char *write_needed, int child_count) +{ + int writes = 0; + int i = 0; + + for (i = 0; i < child_count; i++) { + if (write_needed[i]) + writes++; + } + + return writes; +} + + +static int +sh_loop_driver_done (call_frame_t *sh_frame, xlator_t *this, + call_frame_t *last_loop_frame) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_sh_algo_private_t *sh_priv = NULL; + int32_t total_blocks = 0; + int32_t diff_blocks = 0; + + local = sh_frame->local; + sh = &local->self_heal; + sh_priv = sh->private; + if (sh_priv) { + total_blocks = sh_priv->total_blocks; + diff_blocks = sh_priv->diff_blocks; + } + + sh_private_cleanup (sh_frame, this); + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + GF_ASSERT (!last_loop_frame); + //loop_finish should have happened and the old_loop should be NULL + gf_log (this->name, GF_LOG_DEBUG, + "self-heal aborting on %s", + local->loc.path); + + local->self_heal.algo_abort_cbk (sh_frame, this); + } else { + GF_ASSERT (last_loop_frame); + if (diff_blocks == total_blocks) { + gf_log (this->name, GF_LOG_DEBUG, "full self-heal " + "completed on %s",local->loc.path); + } else { + gf_log (this->name, GF_LOG_DEBUG, + "diff self-heal on %s: completed. " + "(%d blocks of %d were different (%.2f%%))", + local->loc.path, diff_blocks, total_blocks, + ((diff_blocks * 1.0)/total_blocks) * 100); + } + + sh->old_loop_frame = last_loop_frame; + local->self_heal.algo_completion_cbk (sh_frame, this); + } + + return 0; +} + +int +sh_loop_finish (call_frame_t *loop_frame, xlator_t *this) +{ + afr_local_t *loop_local = NULL; + afr_self_heal_t *loop_sh = NULL; + + if (!loop_frame) + goto out; + + loop_local = loop_frame->local; + if (loop_local) { + loop_sh = &loop_local->self_heal; + } + + if (loop_sh && loop_sh->data_lock_held) { + afr_sh_data_unlock (loop_frame, this, this->name, + sh_destroy_frame); + } else { + sh_destroy_frame (loop_frame, this); + } +out: + return 0; +} + +static int +sh_loop_lock_success (call_frame_t *loop_frame, xlator_t *this) +{ + afr_local_t *loop_local = NULL; + afr_self_heal_t *loop_sh = NULL; + + loop_local = loop_frame->local; + loop_sh = &loop_local->self_heal; + + sh_loop_finish (loop_sh->old_loop_frame, this); + loop_sh->old_loop_frame = NULL; + + gf_log (this->name, GF_LOG_DEBUG, "Acquired lock for range %"PRIu64 + " %"PRIu64, loop_sh->offset, loop_sh->block_size); + loop_sh->data_lock_held = _gf_true; + loop_sh->sh_data_algo_start (loop_frame, this); + return 0; +} + +static int +sh_loop_lock_failure (call_frame_t *loop_frame, xlator_t *this) +{ + call_frame_t *sh_frame = NULL; + afr_local_t *loop_local = NULL; + afr_self_heal_t *loop_sh = NULL; + + loop_local = loop_frame->local; + loop_sh = &loop_local->self_heal; + sh_frame = loop_sh->sh_frame; + + gf_log (this->name, GF_LOG_ERROR, "failed lock for range %"PRIu64 + " %"PRIu64, loop_sh->offset, loop_sh->block_size); + sh_loop_finish (loop_sh->old_loop_frame, this); + loop_sh->old_loop_frame = NULL; + sh_loop_return (sh_frame, this, loop_frame, -1, ENOTCONN); + return 0; +} + +static int +sh_loop_frame_create (call_frame_t *sh_frame, xlator_t *this, + call_frame_t *old_loop_frame, call_frame_t **loop_frame) +{ + call_frame_t *new_loop_frame = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_local_t *new_loop_local = NULL; + afr_self_heal_t *new_loop_sh = NULL; + afr_private_t *priv = NULL; + + GF_ASSERT (sh_frame); + GF_ASSERT (loop_frame); + + *loop_frame = NULL; + local = sh_frame->local; + sh = &local->self_heal; + priv = this->private; + + new_loop_frame = copy_frame (sh_frame); + if (!new_loop_frame) + goto out; + //We want the frame to have same lk_owner as sh_frame + //so that locks translator allows conflicting locks + new_loop_local = afr_self_heal_local_init (local, this); + if (!new_loop_local) + goto out; + new_loop_frame->local = new_loop_local; + + new_loop_sh = &new_loop_local->self_heal; + new_loop_sh->sources = memdup (sh->sources, + priv->child_count * sizeof (*sh->sources)); + if (!new_loop_sh->sources) + goto out; + new_loop_sh->write_needed = GF_CALLOC (priv->child_count, + sizeof (*new_loop_sh->write_needed), + gf_afr_mt_char); + if (!new_loop_sh->write_needed) + goto out; + new_loop_sh->checksum = GF_CALLOC (priv->child_count, MD5_DIGEST_LENGTH, + gf_afr_mt_uint8_t); + if (!new_loop_sh->checksum) + goto out; + new_loop_sh->inode = inode_ref (sh->inode); + new_loop_sh->sh_data_algo_start = sh->sh_data_algo_start; + new_loop_sh->source = sh->source; + new_loop_sh->active_sinks = sh->active_sinks; + new_loop_sh->healing_fd = fd_ref (sh->healing_fd); + new_loop_sh->file_has_holes = sh->file_has_holes; + new_loop_sh->old_loop_frame = old_loop_frame; + new_loop_sh->sh_frame = sh_frame; + *loop_frame = new_loop_frame; + return 0; +out: + sh_destroy_frame (new_loop_frame, this); + return -ENOMEM; +} + +static int +sh_loop_start (call_frame_t *sh_frame, xlator_t *this, off_t offset, + call_frame_t *old_loop_frame) +{ + call_frame_t *new_loop_frame = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_local_t *new_loop_local = NULL; + afr_self_heal_t *new_loop_sh = NULL; + int ret = 0; + + GF_ASSERT (sh_frame); + + local = sh_frame->local; + sh = &local->self_heal; + + ret = sh_loop_frame_create (sh_frame, this, old_loop_frame, + &new_loop_frame); + if (ret) + goto out; + new_loop_local = new_loop_frame->local; + new_loop_sh = &new_loop_local->self_heal; + new_loop_sh->offset = offset; + new_loop_sh->block_size = sh->block_size; + afr_sh_data_lock (new_loop_frame, this, offset, new_loop_sh->block_size, + _gf_true, this->name, sh_loop_lock_success, sh_loop_lock_failure); + return 0; +out: + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + if (old_loop_frame) + sh_loop_finish (old_loop_frame, this); + sh_loop_return (sh_frame, this, new_loop_frame, -1, ENOMEM); + return 0; +} + +static int +sh_loop_driver (call_frame_t *sh_frame, xlator_t *this, + gf_boolean_t is_first_call, call_frame_t *old_loop_frame) +{ + afr_local_t * local = NULL; + afr_self_heal_t * sh = NULL; + afr_sh_algo_private_t *sh_priv = NULL; + gf_boolean_t is_driver_done = _gf_false; + blksize_t block_size = 0; + int loop = 0; + off_t offset = 0; + afr_private_t *priv = NULL; + + priv = this->private; + local = sh_frame->local; + sh = &local->self_heal; + sh_priv = sh->private; + + LOCK (&sh_priv->lock); + { + if (!is_first_call) + sh_priv->loops_running--; + offset = sh_priv->offset; + block_size = sh->block_size; + while ((!sh->eof_reached) && + (!is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) && + (sh_priv->loops_running < priv->data_self_heal_window_size) + && (sh_priv->offset < sh->file_size)) { + + loop++; + sh_priv->offset += block_size; + sh_priv->loops_running++; + + if (!is_first_call) + break; + } + if (0 == sh_priv->loops_running) { + is_driver_done = _gf_true; + } + } + UNLOCK (&sh_priv->lock); + + if (0 == loop) { + //loop finish does unlock, but the erasing of the pending + //xattrs needs to happen before that so do not finish the loop + if (is_driver_done && + !is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) + goto driver_done; + if (old_loop_frame) { + sh_loop_finish (old_loop_frame, this); + old_loop_frame = NULL; + } + } + + //If we have more loops to form we should finish previous loop after + //the next loop lock + while (loop--) { + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + // op failed in other loop, stop spawning more loops + if (old_loop_frame) { + sh_loop_finish (old_loop_frame, this); + old_loop_frame = NULL; + } + sh_loop_driver (sh_frame, this, _gf_false, NULL); + } else { + gf_log (this->name, GF_LOG_TRACE, "spawning a loop " + "for offset %"PRId64, offset); + + sh_loop_start (sh_frame, this, offset, old_loop_frame); + old_loop_frame = NULL; + offset += block_size; + } + } + +driver_done: + if (is_driver_done) { + sh_loop_driver_done (sh_frame, this, old_loop_frame); + } + return 0; +} + +static int +sh_loop_return (call_frame_t *sh_frame, xlator_t *this, call_frame_t *loop_frame, + int32_t op_ret, int32_t op_errno) +{ + afr_local_t * loop_local = NULL; + afr_self_heal_t * loop_sh = NULL; + afr_local_t * sh_local = NULL; + afr_self_heal_t *sh = NULL; + + sh_local = sh_frame->local; + sh = &sh_local->self_heal; + + if (loop_frame) { + loop_local = loop_frame->local; + if (loop_local) + loop_sh = &loop_local->self_heal; + if (loop_sh) + gf_log (this->name, GF_LOG_TRACE, "loop for offset " + "%"PRId64" returned", loop_sh->offset); + } + + if (op_ret == -1) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_set_error (sh, op_errno); + if (loop_frame) { + sh_loop_finish (loop_frame, this); + loop_frame = NULL; + } + } + + sh_loop_driver (sh_frame, this, _gf_false, loop_frame); + + return 0; +} + +static int +sh_loop_write_cbk (call_frame_t *loop_frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *buf, + struct iatt *postbuf, dict_t *xdata) +{ + afr_private_t * priv = NULL; + afr_local_t * loop_local = NULL; + afr_self_heal_t * loop_sh = NULL; + call_frame_t *sh_frame = NULL; + afr_local_t * sh_local = NULL; + afr_self_heal_t *sh = NULL; + int call_count = 0; + int child_index = 0; + + priv = this->private; + loop_local = loop_frame->local; + loop_sh = &loop_local->self_heal; + + sh_frame = loop_sh->sh_frame; + sh_local = sh_frame->local; + sh = &sh_local->self_heal; + + child_index = (long) cookie; + + gf_log (this->name, GF_LOG_TRACE, + "wrote %d bytes of data from %s to child %d, offset %"PRId64"", + op_ret, sh_local->loc.path, child_index, loop_sh->offset); + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_ERROR, + "write to %s failed on subvolume %s (%s)", + sh_local->loc.path, + priv->children[child_index]->name, + strerror (op_errno)); + + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_set_error (loop_sh, op_errno); + } else if (op_ret < loop_local->cont.writev.vector->iov_len) { + gf_log (this->name, GF_LOG_ERROR, + "incomplete write to %s on subvolume %s " + "(expected %lu, returned %d)", sh_local->loc.path, + priv->children[child_index]->name, + loop_local->cont.writev.vector->iov_len, op_ret); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } + + call_count = afr_frame_return (loop_frame); + + if (call_count == 0) { + iobref_unref(loop_local->cont.writev.iobref); + + sh_loop_return (sh_frame, this, loop_frame, + loop_sh->op_ret, loop_sh->op_errno); + } + + return 0; +} + +static void +sh_prune_writes_needed (call_frame_t *sh_frame, call_frame_t *loop_frame, + afr_private_t *priv) +{ + afr_local_t *sh_local = NULL; + afr_self_heal_t *sh = NULL; + afr_local_t *loop_local = NULL; + afr_self_heal_t *loop_sh = NULL; + int i = 0; + + sh_local = sh_frame->local; + sh = &sh_local->self_heal; + + if (!strcmp (sh->algo->name, "diff")) + return; + + loop_local = loop_frame->local; + loop_sh = &loop_local->self_heal; + + /* full self-heal guarantees there exists atleast 1 file with size 0 + * That means for other files we can preserve holes that come after + * its size before 'trim' + */ + for (i = 0; i < priv->child_count; i++) { + if (loop_sh->write_needed[i] && + ((loop_sh->offset + 1) > sh->buf[i].ia_size)) + loop_sh->write_needed[i] = 0; + } +} + +static int +sh_loop_read_cbk (call_frame_t *loop_frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + struct iovec *vector, int32_t count, struct iatt *buf, + struct iobref *iobref, dict_t *xdata) +{ + afr_private_t * priv = NULL; + afr_local_t * loop_local = NULL; + afr_self_heal_t * loop_sh = NULL; + call_frame_t *sh_frame = NULL; + int i = 0; + int call_count = 0; + afr_local_t * sh_local = NULL; + afr_self_heal_t * sh = NULL; + + priv = this->private; + loop_local = loop_frame->local; + loop_sh = &loop_local->self_heal; + + sh_frame = loop_sh->sh_frame; + sh_local = sh_frame->local; + sh = &sh_local->self_heal; + + gf_log (this->name, GF_LOG_TRACE, + "read %d bytes of data from %s, offset %"PRId64"", + op_ret, loop_local->loc.path, loop_sh->offset); + + if (op_ret <= 0) { + if (op_ret < 0) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + gf_log (this->name, GF_LOG_ERROR, "read failed on %d " + "for %s reason :%s", sh->source, + sh_local->loc.path, strerror (errno)); + } else { + sh->eof_reached = _gf_true; + gf_log (this->name, GF_LOG_DEBUG, "Eof reached for %s", + sh_local->loc.path); + } + sh_loop_return (sh_frame, this, loop_frame, op_ret, op_errno); + goto out; + } + + if (loop_sh->file_has_holes && iov_0filled (vector, count) == 0) + sh_prune_writes_needed (sh_frame, loop_frame, priv); + + call_count = sh_number_of_writes_needed (loop_sh->write_needed, + priv->child_count); + if (call_count == 0) { + sh_loop_return (sh_frame, this, loop_frame, 0, 0); + goto out; + } + + loop_local->call_count = call_count; + + /* + * We only really need the request size at the moment, but the buffer + * is required if we want to issue a retry in the event of a short write. + * Therefore, we duplicate the vector and ref the iobref here... + */ + loop_local->cont.writev.vector = iov_dup(vector, count); + loop_local->cont.writev.iobref = iobref_ref(iobref); + + for (i = 0; i < priv->child_count; i++) { + if (!loop_sh->write_needed[i]) + continue; + STACK_WIND_COOKIE (loop_frame, sh_loop_write_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->writev, + loop_sh->healing_fd, vector, count, + loop_sh->offset, 0, iobref, NULL); + + if (!--call_count) + break; + } + +out: + return 0; +} + + +static int +sh_loop_read (call_frame_t *loop_frame, xlator_t *this) +{ + afr_private_t *priv = NULL; + afr_local_t *loop_local = NULL; + afr_self_heal_t *loop_sh = NULL; + + priv = this->private; + loop_local = loop_frame->local; + loop_sh = &loop_local->self_heal; + + STACK_WIND_COOKIE (loop_frame, sh_loop_read_cbk, + (void *) (long) loop_sh->source, + priv->children[loop_sh->source], + priv->children[loop_sh->source]->fops->readv, + loop_sh->healing_fd, loop_sh->block_size, + loop_sh->offset, 0, NULL); + + return 0; +} + + +static int +sh_diff_checksum_cbk (call_frame_t *loop_frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + uint32_t weak_checksum, uint8_t *strong_checksum, + dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *loop_local = NULL; + afr_self_heal_t *loop_sh = NULL; + call_frame_t *sh_frame = NULL; + afr_local_t *sh_local = NULL; + afr_self_heal_t *sh = NULL; + afr_sh_algo_private_t *sh_priv = NULL; + int child_index = 0; + int call_count = 0; + int i = 0; + int write_needed = 0; + + priv = this->private; + + loop_local = loop_frame->local; + loop_sh = &loop_local->self_heal; + + sh_frame = loop_sh->sh_frame; + sh_local = sh_frame->local; + sh = &sh_local->self_heal; + + sh_priv = sh->private; + + child_index = (long) cookie; + + if (op_ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "checksum on %s failed on subvolume %s (%s)", + sh_local->loc.path, priv->children[child_index]->name, + strerror (op_errno)); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } else { + memcpy (loop_sh->checksum + child_index * MD5_DIGEST_LENGTH, + strong_checksum, MD5_DIGEST_LENGTH); + } + + call_count = afr_frame_return (loop_frame); + + if (call_count == 0) { + for (i = 0; i < priv->child_count; i++) { + if (sh->sources[i] || !sh_local->child_up[i]) + continue; + + if (memcmp (loop_sh->checksum + (i * MD5_DIGEST_LENGTH), + loop_sh->checksum + (sh->source * MD5_DIGEST_LENGTH), + MD5_DIGEST_LENGTH)) { + /* + Checksums differ, so this block + must be written to this sink + */ + + gf_log (this->name, GF_LOG_DEBUG, + "checksum on subvolume %s at offset %" + PRId64" differs from that on source", + priv->children[i]->name, loop_sh->offset); + + write_needed = loop_sh->write_needed[i] = 1; + } + } + + LOCK (&sh_priv->lock); + { + sh_priv->total_blocks++; + if (write_needed) + sh_priv->diff_blocks++; + } + UNLOCK (&sh_priv->lock); + + if (write_needed && + !is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + sh_loop_read (loop_frame, this); + } else { + sh_loop_return (sh_frame, this, loop_frame, + op_ret, op_errno); + } + } + + return 0; +} + +static int +sh_diff_checksum (call_frame_t *loop_frame, xlator_t *this) +{ + afr_private_t *priv = NULL; + afr_local_t *loop_local = NULL; + afr_self_heal_t *loop_sh = NULL; + int call_count = 0; + int i = 0; + + priv = this->private; + loop_local = loop_frame->local; + loop_sh = &loop_local->self_heal; + + call_count = loop_sh->active_sinks + 1; /* sinks and source */ + + loop_local->call_count = call_count; + + STACK_WIND_COOKIE (loop_frame, sh_diff_checksum_cbk, + (void *) (long) loop_sh->source, + priv->children[loop_sh->source], + priv->children[loop_sh->source]->fops->rchecksum, + loop_sh->healing_fd, + loop_sh->offset, loop_sh->block_size, NULL); + + for (i = 0; i < priv->child_count; i++) { + if (loop_sh->sources[i] || !loop_local->child_up[i]) + continue; + + STACK_WIND_COOKIE (loop_frame, sh_diff_checksum_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->rchecksum, + loop_sh->healing_fd, + loop_sh->offset, loop_sh->block_size, NULL); + + if (!--call_count) + break; + } + + return 0; +} + +static int +sh_full_read_write_to_sinks (call_frame_t *loop_frame, xlator_t *this) +{ + afr_private_t *priv = NULL; + afr_local_t *loop_local = NULL; + afr_self_heal_t *loop_sh = NULL; + int i = 0; + + priv = this->private; + loop_local = loop_frame->local; + loop_sh = &loop_local->self_heal; + + for (i = 0; i < priv->child_count; i++) { + if (loop_sh->sources[i] || !loop_local->child_up[i]) + continue; + loop_sh->write_needed[i] = 1; + } + sh_loop_read (loop_frame, this); + return 0; +} + +afr_sh_algo_private_t* +afr_sh_priv_init () +{ + afr_sh_algo_private_t *sh_priv = NULL; + + sh_priv = GF_CALLOC (1, sizeof (*sh_priv), + gf_afr_mt_afr_private_t); + if (!sh_priv) + goto out; + + LOCK_INIT (&sh_priv->lock); +out: + return sh_priv; +} + +int +afr_sh_transfer_lock (call_frame_t *dst, call_frame_t *src, char *dom, + unsigned int child_count) +{ + afr_local_t *dst_local = NULL; + afr_self_heal_t *dst_sh = NULL; + afr_local_t *src_local = NULL; + afr_self_heal_t *src_sh = NULL; + int ret = -1; + + dst_local = dst->local; + dst_sh = &dst_local->self_heal; + src_local = src->local; + src_sh = &src_local->self_heal; + GF_ASSERT (src_sh->data_lock_held); + GF_ASSERT (!dst_sh->data_lock_held); + ret = afr_lk_transfer_datalock (dst, src, dom, child_count); + if (ret) + return ret; + src_sh->data_lock_held = _gf_false; + dst_sh->data_lock_held = _gf_true; + return 0; +} + +int +afr_sh_start_loops (call_frame_t *sh_frame, xlator_t *this, + afr_sh_algo_fn sh_data_algo_start) +{ + call_frame_t *first_loop_frame = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int ret = 0; + afr_private_t *priv = NULL; + + local = sh_frame->local; + sh = &local->self_heal; + priv = this->private; + + sh->sh_data_algo_start = sh_data_algo_start; + local->call_count = 0; + ret = sh_loop_frame_create (sh_frame, this, NULL, &first_loop_frame); + if (ret) + goto out; + ret = afr_sh_transfer_lock (first_loop_frame, sh_frame, this->name, + priv->child_count); + if (ret) + goto out; + sh->private = afr_sh_priv_init (); + if (!sh->private) { + ret = -1; + goto out; + } + sh_loop_driver (sh_frame, this, _gf_true, first_loop_frame); + ret = 0; +out: + if (ret) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + sh_loop_driver_done (sh_frame, this, NULL); + } + return 0; +} + +int +afr_sh_algo_diff (call_frame_t *sh_frame, xlator_t *this) +{ + afr_sh_start_loops (sh_frame, this, sh_diff_checksum); + return 0; +} + +int +afr_sh_algo_full (call_frame_t *sh_frame, xlator_t *this) +{ + afr_sh_start_loops (sh_frame, this, sh_full_read_write_to_sinks); + return 0; +} + +struct afr_sh_algorithm afr_self_heal_algorithms[] = { + {.name = "full", .fn = afr_sh_algo_full}, + {.name = "diff", .fn = afr_sh_algo_diff}, + {0, 0}, +}; diff --git a/xlators/cluster/afr/src/afr-self-heal-algorithm.h b/xlators/cluster/afr/src/afr-self-heal-algorithm.h new file mode 100644 index 000000000..6b20789b1 --- /dev/null +++ b/xlators/cluster/afr/src/afr-self-heal-algorithm.h @@ -0,0 +1,32 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#ifndef __AFR_SELF_HEAL_ALGORITHM_H__ +#define __AFR_SELF_HEAL_ALGORITHM_H__ + +typedef int (*afr_sh_algo_fn) (call_frame_t *frame, + xlator_t *this); + +struct afr_sh_algorithm { + const char *name; + afr_sh_algo_fn fn; +}; + +extern struct afr_sh_algorithm afr_self_heal_algorithms[3]; +typedef struct { + gf_lock_t lock; + unsigned int loops_running; + off_t offset; + + int32_t total_blocks; + int32_t diff_blocks; +} afr_sh_algo_private_t; + +#endif /* __AFR_SELF_HEAL_ALGORITHM_H__ */ diff --git a/xlators/cluster/afr/src/afr-self-heal-common.c b/xlators/cluster/afr/src/afr-self-heal-common.c index 5f08fb007..ef92b4205 100644 --- a/xlators/cluster/afr/src/afr-self-heal-common.c +++ b/xlators/cluster/afr/src/afr-self-heal-common.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> This file is part of GlusterFS. - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #include "glusterfs.h" @@ -25,7 +16,68 @@ #include "afr-transaction.h" #include "afr-self-heal-common.h" #include "afr-self-heal.h" +#include "pump.h" + +#define ADD_FMT_STRING(msg, off, sh_str, status, print_log) \ + do { \ + if (AFR_SELF_HEAL_NOT_ATTEMPTED != status) { \ + off += snprintf (msg + off, sizeof (msg) - off, \ + " "sh_str" self heal %s,", \ + get_sh_completion_status (status));\ + print_log = 1; \ + } \ + } while (0) + +#define ADD_FMT_STRING_SYNC(msg, off, sh_str, status, print_log) \ + do { \ + if (AFR_SELF_HEAL_SYNC_BEGIN == status || \ + AFR_SELF_HEAL_FAILED == status) { \ + off += snprintf (msg + off, sizeof (msg) - off, \ + " "sh_str" self heal %s,", \ + get_sh_completion_status (status));\ + print_log = 1; \ + } \ + } while (0) + + +void +afr_sh_reset (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + memset (sh->child_errno, 0, + sizeof (*sh->child_errno) * priv->child_count); + memset (sh->buf, 0, sizeof (*sh->buf) * priv->child_count); + memset (sh->parentbufs, 0, + sizeof (*sh->parentbufs) * priv->child_count); + memset (sh->success, 0, sizeof (*sh->success) * priv->child_count); + memset (sh->locked_nodes, 0, + sizeof (*sh->locked_nodes) * priv->child_count); + sh->active_sinks = 0; + + afr_reset_xattr (sh->xattr, priv->child_count); +} +//Intersection[child]=1 if child is part of intersection +void +afr_children_intersection_get (int32_t *set1, int32_t *set2, + int *intersection, unsigned int child_count) +{ + int i = 0; + + memset (intersection, 0, sizeof (*intersection) * child_count); + for (i = 0; i < child_count; i++) { + intersection[i] = afr_is_child_present (set1, child_count, i) + && afr_is_child_present (set2, child_count, + i); + } +} /** * select_source - select a source and return it @@ -34,115 +86,215 @@ int afr_sh_select_source (int sources[], int child_count) { - int i; - for (i = 0; i < child_count; i++) - if (sources[i]) - return i; + int i = 0; + for (i = 0; i < child_count; i++) + if (sources[i]) + return i; - return -1; + return -1; } +void +afr_sh_mark_source_sinks (call_frame_t *frame, xlator_t *this) +{ + int i = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int active_sinks = 0; -/** - * sink_count - return number of sinks in sources array - */ + local = frame->local; + sh = &local->self_heal; + priv = this->private; -int -afr_sh_sink_count (int sources[], int child_count) -{ - int i; - int sinks = 0; - for (i = 0; i < child_count; i++) - if (!sources[i]) - sinks++; - return sinks; + for (i = 0; i < priv->child_count; i++) { + if (sh->sources[i] == 0 && local->child_up[i] == 1) { + active_sinks++; + sh->success[i] = 1; + } else if (sh->sources[i] == 1 && local->child_up[i] == 1) { + sh->success[i] = 1; + } + } + sh->active_sinks = active_sinks; } int afr_sh_source_count (int sources[], int child_count) { - int i; - int nsource = 0; + int i = 0; + int nsource = 0; - for (i = 0; i < child_count; i++) - if (sources[i]) - nsource++; - return nsource; + for (i = 0; i < child_count; i++) + if (sources[i]) + nsource++; + return nsource; } +void +afr_sh_set_error (afr_self_heal_t *sh, int32_t op_errno) +{ + sh->op_ret = -1; + sh->op_errno = afr_most_important_error(sh->op_errno, op_errno, + _gf_false); +} -int -afr_sh_supress_errenous_children (int sources[], int child_errno[], - int child_count) +void +afr_sh_print_pending_matrix (int32_t *pending_matrix[], xlator_t *this) { - int i = 0; + afr_private_t * priv = this->private; + char *buf = NULL; + char *ptr = NULL; + int i = 0; + int j = 0; - for (i = 0; i < child_count; i++) { - if (child_errno[i] && sources[i]) { - sources[i] = 0; - } - } + /* 10 digits per entry + 1 space + '[' and ']' */ + buf = GF_MALLOC (priv->child_count * 11 + 8, gf_afr_mt_char); - return 0; + for (i = 0; i < priv->child_count; i++) { + ptr = buf; + ptr += sprintf (ptr, "[ "); + for (j = 0; j < priv->child_count; j++) { + ptr += sprintf (ptr, "%d ", pending_matrix[i][j]); + } + sprintf (ptr, "]"); + gf_log (this->name, GF_LOG_DEBUG, "pending_matrix: %s", buf); + } + + GF_FREE (buf); } +char* +afr_get_pending_matrix_str (int32_t *pending_matrix[], xlator_t *this) +{ + afr_private_t * priv = this->private; + char *buf = NULL; + char *ptr = NULL; + int i = 0; + int j = 0; + int child_count = priv->child_count; + char *matrix_begin = "[ [ "; + char *matrix_end = "] ]"; + char *seperator = "] [ "; + int pending_entry_strlen = 12; //Including space after entry + int matrix_begin_strlen = 0; + int matrix_end_strlen = 0; + int seperator_strlen = 0; + int string_length = 0; + char *msg = "- Pending matrix: "; + + /* + * for a list of lists of [ [ a b ] [ c d ] ] + * */ + + matrix_begin_strlen = strlen (matrix_begin); + matrix_end_strlen = strlen (matrix_end); + seperator_strlen = strlen (seperator); + string_length = matrix_begin_strlen + matrix_end_strlen + + (child_count -1) * seperator_strlen + + (child_count * child_count * pending_entry_strlen); + + buf = GF_CALLOC (1, 1 + strlen (msg) + string_length , gf_afr_mt_char); + if (!buf) + goto out; + + ptr = buf; + ptr += sprintf (ptr, "%s", msg); + ptr += sprintf (ptr, "%s", matrix_begin); + for (i = 0; i < priv->child_count; i++) { + for (j = 0; j < priv->child_count; j++) { + ptr += sprintf (ptr, "%d ", pending_matrix[i][j]); + } + if (i < priv->child_count -1) + ptr += sprintf (ptr, "%s", seperator); + } + + ptr += sprintf (ptr, "%s", matrix_end); + +out: + return buf; +} void -afr_sh_print_pending_matrix (int32_t *pending_matrix[], xlator_t *this) +afr_sh_print_split_brain_log (int32_t *pending_matrix[], xlator_t *this, + const char *loc) { - afr_private_t * priv = this->private; + char *buf = NULL; + char *free_ptr = NULL; - char *buf = NULL; - char *ptr = NULL; + buf = afr_get_pending_matrix_str (pending_matrix, this); + if (buf) + free_ptr = buf; + else + buf = ""; - int i, j; - /* 10 digits per entry + 1 space + '[' and ']' */ - buf = MALLOC (priv->child_count * 11 + 8); + gf_log (this->name, GF_LOG_ERROR, "Unable to self-heal contents of '%s'" + " (possible split-brain). Please delete the file from all but " + "the preferred subvolume.%s", loc, buf); + GF_FREE (free_ptr); + return; +} - for (i = 0; i < priv->child_count; i++) { - ptr = buf; - ptr += sprintf (ptr, "[ "); - for (j = 0; j < priv->child_count; j++) { - ptr += sprintf (ptr, "%d ", pending_matrix[i][j]); - } - ptr += sprintf (ptr, "]"); - gf_log (this->name, GF_LOG_TRACE, - "pending_matrix: %s", buf); - } - FREE (buf); -} +void +afr_init_pending_matrix (int32_t **pending_matrix, size_t child_count) +{ + int i = 0; + int j = 0; + GF_ASSERT (pending_matrix); + + for (i = 0; i < child_count; i++) { + for (j = 0; j < child_count; j++) { + pending_matrix[i][j] = 0; + } + } +} void -afr_sh_build_pending_matrix (afr_private_t *priv, - int32_t *pending_matrix[], dict_t *xattr[], - int child_count, afr_transaction_type type) +afr_mark_ignorant_subvols_as_pending (int32_t **pending_matrix, + unsigned char *ignorant_subvols, + size_t child_count) { - int i, j, k; + int i = 0; + int j = 0; - int32_t *pending = NULL; - int ret = -1; + GF_ASSERT (pending_matrix); + GF_ASSERT (ignorant_subvols); - unsigned char *ignorant_subvols = NULL; + for (i = 0; i < child_count; i++) { + if (ignorant_subvols[i]) { + for (j = 0; j < child_count; j++) { + if (!ignorant_subvols[j]) + pending_matrix[j][i] += 1; + } + } + } +} - ignorant_subvols = CALLOC (sizeof (*ignorant_subvols), child_count); +int +afr_build_pending_matrix (char **pending_key, int32_t **pending_matrix, + unsigned char *ignorant_subvols, + dict_t *xattr[], afr_transaction_type type, + size_t child_count) +{ + /* Indexable by result of afr_index_for_transaction_type(): 0 -- 2. */ + int32_t pending[3] = {0,}; + void *pending_raw = NULL; + int ret = -1; + int i = 0; + int j = 0; + int k = 0; - /* start clean */ - for (i = 0; i < child_count; i++) { - for (j = 0; j < child_count; j++) { - pending_matrix[i][j] = 0; - } - } + afr_init_pending_matrix (pending_matrix, child_count); - for (i = 0; i < child_count; i++) { - pending = NULL; + for (i = 0; i < child_count; i++) { + pending_raw = NULL; for (j = 0; j < child_count; j++) { - ret = dict_get_ptr (xattr[i], priv->pending_key[j], - VOID(&pending)); - + ret = dict_get_ptr (xattr[i], pending_key[j], + &pending_raw); + if (ret != 0) { /* * There is no xattr present. This means this @@ -150,62 +302,26 @@ afr_sh_build_pending_matrix (afr_private_t *priv, * subvolume. */ - ignorant_subvols[i] = 1; + if (ignorant_subvols) + ignorant_subvols[i] = 1; continue; } + memcpy (pending, pending_raw, sizeof(pending)); k = afr_index_for_transaction_type (type); - - pending_matrix[i][j] = ntoh32 (pending[k]); - } - } - /* - * Make all non-ignorant subvols point towards the ignorant - * subvolumes. - */ - - for (i = 0; i < child_count; i++) { - if (ignorant_subvols[i]) { - for (j = 0; j < child_count; j++) { - if (!ignorant_subvols[j]) - pending_matrix[j][i] += 1; - } + pending_matrix[i][j] = ntoh32 (pending[k]); } } - FREE (ignorant_subvols); + return ret; } - -/** - * mark_sources: Mark all 'source' nodes and return number of source - * nodes found - * - * A node (a row in the pending matrix) belongs to one of - * three categories: - * - * M is the pending matrix. - * - * 'innocent' - M[i] is all zeroes - * 'fool' - M[i] has i'th element = 1 (self-reference) - * 'wise' - M[i] has i'th element = 0, others are 1 or 0. - * - * All 'innocent' nodes are sinks. If all nodes are innocent, no self-heal is - * needed. - * - * A 'wise' node can be a source. If two 'wise' nodes conflict, it is - * a split-brain. If one wise node refers to the other but the other doesn't - * refer back, the referrer is a source. - * - * All fools are sinks, unless there are no 'wise' nodes. In that case, - * one of the fools is made a source. - */ - typedef enum { + AFR_NODE_INVALID, AFR_NODE_INNOCENT, AFR_NODE_FOOL, - AFR_NODE_WISE + AFR_NODE_WISE, } afr_node_type; typedef struct { @@ -246,7 +362,7 @@ afr_sh_is_wise (int32_t *array, int i, int child_count) static int -afr_sh_all_nodes_innocent (afr_node_character *characters, +afr_sh_all_nodes_innocent (afr_node_character *characters, int child_count) { int i = 0; @@ -282,10 +398,10 @@ afr_sh_wise_nodes_exist (afr_node_character *characters, int child_count) /* * The 'wisdom' of a wise node is 0 if any other wise node accuses it. - * It is 1 if no other wise node accuses it. + * It is 1 if no other wise node accuses it. * Only wise nodes with wisdom 1 are sources. * - * If no nodes with wisdom 1 exist, a split-brain has occured. + * If no nodes with wisdom 1 exist, a split-brain has occurred. */ static void @@ -302,7 +418,7 @@ afr_sh_compute_wisdom (int32_t *pending_matrix[], for (j = 0; j < child_count; j++) { if ((characters[j].type == AFR_NODE_WISE) && pending_matrix[j][i]) { - + characters[i].wisdom = 0; } } @@ -312,7 +428,7 @@ afr_sh_compute_wisdom (int32_t *pending_matrix[], static int -afr_sh_wise_nodes_conflict (afr_node_character *characters, +afr_sh_wise_nodes_conflict (afr_node_character *characters, int child_count) { int i = 0; @@ -333,13 +449,12 @@ afr_sh_wise_nodes_conflict (afr_node_character *characters, static int -afr_sh_mark_wisest_as_sources (int sources[], - afr_node_character *characters, +afr_sh_mark_wisest_as_sources (int sources[], + afr_node_character *characters, int child_count) { int nsources = 0; - - int i = 0; + int i = 0; for (i = 0; i < child_count; i++) { if (characters[i].wisdom == 1) { @@ -351,1018 +466,2347 @@ afr_sh_mark_wisest_as_sources (int sources[], return nsources; } - -static int -afr_sh_mark_if_size_differs (afr_self_heal_t *sh, int child_count) +static void +afr_compute_witness_of_fools (int32_t *witnesses, int32_t **pending_matrix, + afr_node_character *characters, + int32_t child_count) { - int32_t ** pending_matrix; - int i, j; - - int size_differs = 0; + int i = 0; + int j = 0; + int witness = 0; - pending_matrix = sh->pending_matrix; + GF_ASSERT (witnesses); + GF_ASSERT (pending_matrix); + GF_ASSERT (characters); + GF_ASSERT (child_count > 0); for (i = 0; i < child_count; i++) { + if (characters[i].type != AFR_NODE_FOOL) + continue; + + witness = 0; for (j = 0; j < child_count; j++) { - if (SIZE_DIFFERS (&sh->buf[i], &sh->buf[j]) - && (pending_matrix[i][j] == 0) - && (pending_matrix[j][i] == 0)) { - - pending_matrix[i][j] = 1; - pending_matrix[j][i] = 1; - - size_differs = 1; - } + if (i == j) + continue; + witness += pending_matrix[i][j]; } + witnesses[i] = witness; } - - return size_differs; } - -static int -afr_sh_mark_biggest_fool_as_source (afr_self_heal_t *sh, - afr_node_character *characters, - int child_count) +static int32_t +afr_find_biggest_witness_among_fools (int32_t *witnesses, + afr_node_character *characters, + int32_t child_count) { - int i = 0; - int biggest = 0; - + int i = 0; + int biggest_witness = -1; + int biggest_witness_idx = -1; + int biggest_witness_cnt = -1; + + GF_ASSERT (witnesses); + GF_ASSERT (characters); + GF_ASSERT (child_count > 0); + for (i = 0; i < child_count; i++) { - if (characters[i].type == AFR_NODE_FOOL) { - biggest = i; - break; - } + if (characters[i].type != AFR_NODE_FOOL) + continue; + + if (biggest_witness < witnesses[i]) { + biggest_witness = witnesses[i]; + biggest_witness_idx = i; + biggest_witness_cnt = 1; + continue; + } + + if (biggest_witness == witnesses[i]) + biggest_witness_cnt++; } + if (biggest_witness_cnt != 1) + return -1; + + return biggest_witness_idx; +} + +int +afr_mark_fool_as_source_by_witness (int32_t *sources, int32_t *witnesses, + afr_node_character *characters, + int32_t child_count, int32_t witness) +{ + int i = 0; + int nsources = 0; + + GF_ASSERT (sources); + GF_ASSERT (witnesses); + GF_ASSERT (characters); + GF_ASSERT (child_count > 0); + for (i = 0; i < child_count; i++) { if (characters[i].type != AFR_NODE_FOOL) continue; - - if (SIZE_GREATER (&sh->buf[i], &sh->buf[biggest])) { - biggest = i; + + if (witness == witnesses[i]) { + sources[i] = 1; + nsources++; } } + return nsources; +} - sh->sources[biggest] = 1; - return 1; +int +afr_mark_fool_as_source_by_idx (int32_t *sources, int child_count, int idx) +{ + if (idx >= 0 && idx < child_count) { + sources[idx] = 1; + return 1; + } + return 0; } static int -afr_sh_mark_biggest_as_source (afr_self_heal_t *sh, int child_count) +afr_find_largest_file_size (struct iatt *bufs, int32_t *success_children, + int child_count) { - int biggest = 0; - int i; + int idx = -1; + int i = -1; + int child = -1; + uint64_t max_size = 0; + uint64_t min_size = 0; + int num_children = 0; - for (i = 0; i < child_count; i++) { - if (SIZE_GREATER (&sh->buf[i], &sh->buf[biggest])) { - biggest = i; + for (i = 0; i < child_count; i++) { + if (success_children[i] == -1) + break; + + child = success_children[i]; + if (bufs[child].ia_size > max_size) { + max_size = bufs[child].ia_size; + idx = child; + } + + if ((num_children == 0) || (bufs[child].ia_size < min_size)) { + min_size = bufs[child].ia_size; } + + num_children++; + } + + /* If sizes are same for all of them, finding sources will have to + * happen with pending changelog. So return -1 + */ + if ((num_children > 1) && (min_size == max_size)) + return -1; + return idx; +} + + +static int +afr_find_newest_file (struct iatt *bufs, int32_t *success_children, + int child_count) +{ + int idx = -1; + int i = -1; + int child = -1; + uint64_t max_ctime = 0; + + for (i = 0; i < child_count; i++) { + if (success_children[i] == -1) + break; + + child = success_children[i]; + if (bufs[child].ia_ctime > max_ctime) { + max_ctime = bufs[child].ia_ctime; + idx = child; + } + } + + return idx; +} + + +static int +afr_mark_biggest_of_fools_as_source (int32_t *sources, int32_t **pending_matrix, + afr_node_character *characters, + int32_t *success_children, + int child_count, struct iatt *bufs) +{ + int32_t biggest_witness = 0; + int nsources = 0; + int32_t *witnesses = NULL; + + GF_ASSERT (child_count > 0); + + biggest_witness = afr_find_largest_file_size (bufs, success_children, + child_count); + if (biggest_witness != -1) + goto found; + + witnesses = GF_CALLOC (child_count, sizeof (*witnesses), + gf_afr_mt_int32_t); + if (NULL == witnesses) { + nsources = -1; + goto out; } - sh->sources[biggest] = 1; + afr_compute_witness_of_fools (witnesses, pending_matrix, characters, + child_count); + biggest_witness = afr_find_biggest_witness_among_fools (witnesses, + characters, + child_count); + if (biggest_witness != -1) + goto found; + + biggest_witness = afr_find_newest_file (bufs, success_children, + child_count); - return 1; +found: + nsources = afr_mark_fool_as_source_by_idx (sources, child_count, + biggest_witness); +out: + GF_FREE (witnesses); + return nsources; } +int +afr_mark_child_as_source_by_uid (int32_t *sources, struct iatt *bufs, + int32_t *success_children, + unsigned int child_count, uint32_t uid) +{ + int i = 0; + int nsources = 0; + int child = 0; + + for (i = 0; i < child_count; i++) { + if (-1 == success_children[i]) + break; + + child = success_children[i]; + if (uid == bufs[child].ia_uid) { + sources[child] = 1; + nsources++; + } + } + return nsources; +} int -afr_sh_mark_sources (afr_self_heal_t *sh, int child_count, - afr_self_heal_type type) +afr_get_child_with_lowest_uid (struct iatt *bufs, int32_t *success_children, + unsigned int child_count) { - int i = 0; + int i = 0; + int smallest = -1; + int child = 0; - int32_t ** pending_matrix; - int * sources; + for (i = 0; i < child_count; i++) { + if (-1 == success_children[i]) + break; + child = success_children[i]; + if ((smallest == -1) || + (bufs[child].ia_uid < bufs[smallest].ia_uid)) { + smallest = child; + } + } + return smallest; +} - int size_differs = 0; +static int +afr_sh_mark_lowest_uid_as_source (struct iatt *bufs, int32_t *success_children, + int child_count, int32_t *sources) +{ + int nsources = 0; + int smallest = 0; + + smallest = afr_get_child_with_lowest_uid (bufs, success_children, + child_count); + if (smallest < 0) { + nsources = -1; + goto out; + } + nsources = afr_mark_child_as_source_by_uid (sources, bufs, + success_children, child_count, + bufs[smallest].ia_uid); +out: + return nsources; +} - pending_matrix = sh->pending_matrix; - sources = sh->sources; +int +afr_get_no_xattr_dir_read_child (xlator_t *this, int32_t *success_children, + struct iatt *bufs) +{ + afr_private_t *priv = NULL; + int i = 0; + int child = -1; + int read_child = -1; - int nsources = 0; + priv = this->private; + for (i = 0; i < priv->child_count; i++) { + child = success_children[i]; + if (child < 0) + break; + if (read_child < 0) + read_child = child; + else if (bufs[read_child].ia_size < bufs[child].ia_size) + read_child = child; + } + return read_child; +} - /* stores the 'characters' (innocent, fool, wise) of the nodes */ - afr_node_character * - characters = CALLOC (sizeof (afr_node_character), - child_count); +int +afr_sh_mark_zero_size_file_as_sink (struct iatt *bufs, int32_t *success_children, + int child_count, int32_t *sources) +{ + int nsources = 0; + int i = 0; + int child = 0; + gf_boolean_t sink_exists = _gf_false; + gf_boolean_t source_exists = _gf_false; + int source = -1; - /* start clean */ - for (i = 0; i < child_count; i++) { - sources[i] = 0; - } - for (i = 0; i < child_count; i++) { - if (afr_sh_is_innocent (pending_matrix[i], child_count)) { - characters[i].type = AFR_NODE_INNOCENT; - - } else if (afr_sh_is_fool (pending_matrix[i], i, child_count)) { - characters[i].type = AFR_NODE_FOOL; + child = success_children[i]; + if (child < 0) + break; + if (!bufs[child].ia_size) { + sink_exists = _gf_true; + continue; + } + if (!source_exists) { + source_exists = _gf_true; + source = child; + continue; + } + if (bufs[source].ia_size != bufs[child].ia_size) { + nsources = -1; + goto out; + } + } + if (!source_exists && !sink_exists) { + nsources = -1; + goto out; + } - } else if (afr_sh_is_wise (pending_matrix[i], i, child_count)) { - characters[i].type = AFR_NODE_WISE; + if (!source_exists || !sink_exists) + goto out; - } else { - gf_log ("[module:replicate]", GF_LOG_ERROR, - "Could not determine the state of subvolume %d!" - " (This message should never appear." - " Please file a bug report to " - "<gluster-devel@nongnu.org>.)", i); + for (i = 0; i < child_count; i++) { + child = success_children[i]; + if (child < 0) + break; + if (bufs[child].ia_size) { + sources[child] = 1; + nsources++; } } +out: + return nsources; +} + +char * +afr_get_character_str (afr_node_type type) +{ + char *character = NULL; + + switch (type) { + case AFR_NODE_INNOCENT: + character = "innocent"; + break; + case AFR_NODE_FOOL: + character = "fool"; + break; + case AFR_NODE_WISE: + character = "wise"; + break; + default: + character = "invalid"; + break; + } + return character; +} + +afr_node_type +afr_find_child_character_type (int32_t *pending_row, int32_t child, + unsigned int child_count) +{ + afr_node_type type = AFR_NODE_INVALID; + + GF_ASSERT ((child >= 0) && (child < child_count)); + + if (afr_sh_is_innocent (pending_row, child_count)) + type = AFR_NODE_INNOCENT; + else if (afr_sh_is_fool (pending_row, child, child_count)) + type = AFR_NODE_FOOL; + else if (afr_sh_is_wise (pending_row, child, child_count)) + type = AFR_NODE_WISE; + return type; +} - if (type == AFR_SELF_HEAL_DATA) { - size_differs = afr_sh_mark_if_size_differs (sh, child_count); +int +afr_build_sources (xlator_t *this, dict_t **xattr, struct iatt *bufs, + int32_t **pending_matrix, int32_t *sources, + int32_t *success_children, afr_transaction_type type, + int32_t *subvol_status, gf_boolean_t ignore_ignorant) +{ + afr_private_t *priv = NULL; + afr_self_heal_type sh_type = AFR_SELF_HEAL_INVALID; + int nsources = -1; + unsigned char *ignorant_subvols = NULL; + unsigned int child_count = 0; + + priv = this->private; + child_count = priv->child_count; + + if (afr_get_children_count (success_children, priv->child_count) == 0) + goto out; + + if (!ignore_ignorant) { + ignorant_subvols = GF_CALLOC (sizeof (*ignorant_subvols), + child_count, gf_afr_mt_char); + if (NULL == ignorant_subvols) + goto out; + } + + afr_build_pending_matrix (priv->pending_key, pending_matrix, + ignorant_subvols, xattr, type, + priv->child_count); + + if (!ignore_ignorant) + afr_mark_ignorant_subvols_as_pending (pending_matrix, + ignorant_subvols, + priv->child_count); + sh_type = afr_self_heal_type_for_transaction (type); + if (AFR_SELF_HEAL_INVALID == sh_type) + goto out; + + afr_sh_print_pending_matrix (pending_matrix, this); + + nsources = afr_mark_sources (this, sources, pending_matrix, bufs, + sh_type, success_children, subvol_status); +out: + GF_FREE (ignorant_subvols); + return nsources; +} + +void +afr_find_character_types (afr_node_character *characters, + int32_t **pending_matrix, int32_t *success_children, + unsigned int child_count) +{ + afr_node_type type = AFR_NODE_INVALID; + int child = 0; + int i = 0; + + for (i = 0; i < child_count; i++) { + child = success_children[i]; + if (child == -1) + break; + type = afr_find_child_character_type (pending_matrix[child], + child, child_count); + characters[child].type = type; + } +} + +void +afr_mark_success_children_sources (int32_t *sources, int32_t *success_children, + unsigned int child_count) +{ + int i = 0; + for (i = 0; i < child_count; i++) { + if (success_children[i] == -1) + break; + sources[success_children[i]] = 1; } +} +/** + * mark_sources: Mark all 'source' nodes and return number of source + * nodes found + * + * A node (a row in the pending matrix) belongs to one of + * three categories: + * + * M is the pending matrix. + * + * 'innocent' - M[i] is all zeroes + * 'fool' - M[i] has i'th element = 1 (self-reference) + * 'wise' - M[i] has i'th element = 0, others are 1 or 0. + * + * All 'innocent' nodes are sinks. If all nodes are innocent, no self-heal is + * needed. + * + * A 'wise' node can be a source. If two 'wise' nodes conflict, it is + * a split-brain. If one wise node refers to the other but the other doesn't + * refer back, the referrer is a source. + * + * All fools are sinks, unless there are no 'wise' nodes. In that case, + * one of the fools is made a source. + */ +int +afr_mark_sources (xlator_t *this, int32_t *sources, int32_t **pending_matrix, + struct iatt *bufs, afr_self_heal_type type, + int32_t *success_children, int32_t *subvol_status) +{ + /* stores the 'characters' (innocent, fool, wise) of the nodes */ + afr_node_character *characters = NULL; + int nsources = -1; + unsigned int child_count = 0; + afr_private_t *priv = NULL; + + priv = this->private; + child_count = priv->child_count; + characters = GF_CALLOC (sizeof (afr_node_character), + child_count, gf_afr_mt_afr_node_character); + if (!characters) + goto out; + + this = THIS; + + /* start clean */ + memset (sources, 0, sizeof (*sources) * child_count); + nsources = 0; + afr_find_character_types (characters, pending_matrix, success_children, + child_count); if (afr_sh_all_nodes_innocent (characters, child_count)) { - if (size_differs) { - nsources = afr_sh_mark_biggest_as_source (sh, - child_count); + switch (type) { + case AFR_SELF_HEAL_METADATA: + nsources = afr_sh_mark_lowest_uid_as_source (bufs, + success_children, + child_count, + sources); + break; + case AFR_SELF_HEAL_DATA: + nsources = afr_sh_mark_zero_size_file_as_sink (bufs, + success_children, + child_count, + sources); + if ((nsources < 0) && subvol_status) + *subvol_status |= SPLIT_BRAIN; + break; + default: + break; } + goto out; + } - } else if (afr_sh_wise_nodes_exist (characters, child_count)) { + if (afr_sh_wise_nodes_exist (characters, child_count)) { afr_sh_compute_wisdom (pending_matrix, characters, child_count); if (afr_sh_wise_nodes_conflict (characters, child_count)) { - /* split-brain */ - + if (subvol_status) + *subvol_status |= SPLIT_BRAIN; nsources = -1; - goto out; - } else { - nsources = afr_sh_mark_wisest_as_sources (sources, + nsources = afr_sh_mark_wisest_as_sources (sources, characters, child_count); } } else { - nsources = afr_sh_mark_biggest_fool_as_source (sh, characters, - child_count); + if (subvol_status) + *subvol_status |= ALL_FOOLS; + nsources = afr_mark_biggest_of_fools_as_source (sources, + pending_matrix, + characters, + success_children, + child_count, bufs); } out: - FREE (characters); + if (nsources == 0) + afr_mark_success_children_sources (sources, success_children, + child_count); + GF_FREE (characters); - return nsources; + gf_log (this->name, GF_LOG_DEBUG, "Number of sources: %d", nsources); + return nsources; } - void afr_sh_pending_to_delta (afr_private_t *priv, dict_t **xattr, - int32_t *delta_matrix[], int success[], + int32_t *delta_matrix[], unsigned char success[], int child_count, afr_transaction_type type) { - int i = 0; - int j = 0; - int k = 0; - - int32_t * pending = NULL; - int ret = 0; - - /* start clean */ - for (i = 0; i < child_count; i++) { - for (j = 0; j < child_count; j++) { - delta_matrix[i][j] = 0; - } - } - - for (i = 0; i < child_count; i++) { - pending = NULL; + int tgt = 0; + int src = 0; + int value = 0; - for (j = 0; j < child_count; j++) { - ret = dict_get_ptr (xattr[i], priv->pending_key[j], - VOID(&pending)); - - if (!success[j]) - continue; + afr_build_pending_matrix (priv->pending_key, delta_matrix, NULL, + xattr, type, priv->child_count); - k = afr_index_for_transaction_type (type); - - if (pending) { - delta_matrix[i][j] = -(ntoh32 (pending[k])); - } else { - delta_matrix[i][j] = 0; + /* + * The algorithm here has two parts. First, for each subvol indexed + * as tgt, we try to figure out what count everyone should have for it. + * If the self-heal succeeded, that's easy; the value is zero. + * Otherwise, the value is the maximum of the succeeding nodes' counts. + * Once we know the value, we loop through (possibly for a second time) + * setting each count to the difference so that when we're done all + * succeeding nodes will have the same count for tgt. + */ + for (tgt = 0; tgt < priv->child_count; ++tgt) { + value = 0; + if (!success[tgt]) { + /* Find the maximum. */ + for (src = 0; src < priv->child_count; ++src) { + if (!success[src]) { + continue; + } + if (delta_matrix[src][tgt] > value) { + value = delta_matrix[src][tgt]; + } } - } - } + /* Force everyone who succeeded to the chosen value. */ + for (src = 0; src < priv->child_count; ++src) { + if (success[src]) { + delta_matrix[src][tgt] = value + - delta_matrix[src][tgt]; + } + else { + delta_matrix[src][tgt] = 0; + } + } + } } int -afr_sh_delta_to_xattr (afr_private_t *priv, +afr_sh_delta_to_xattr (xlator_t *this, int32_t *delta_matrix[], dict_t *xattr[], - int child_count, afr_transaction_type type) + int child_count, afr_transaction_type type) { - int i = 0; - int j = 0; - int k = 0; - - int ret = 0; - - int32_t *pending = 0; - - for (i = 0; i < child_count; i++) { - if (!xattr[i]) - continue; + int i = 0; + int j = 0; + int k = 0; + int ret = 0; + int32_t *pending = NULL; + int32_t *local_pending = NULL; + afr_private_t *priv = NULL; + + priv = this->private; + for (i = 0; i < child_count; i++) { + if (!xattr[i]) + continue; - for (j = 0; j < child_count; j++) { - pending = CALLOC (sizeof (int32_t), 3); + local_pending = NULL; + for (j = 0; j < child_count; j++) { + pending = GF_CALLOC (sizeof (int32_t), 3, + gf_afr_mt_int32_t); + + if (!pending) { + gf_log (this->name, GF_LOG_ERROR, + "failed to allocate pending entry " + "for %s[%d] on %s", + priv->pending_key[j], type, + priv->children[i]->name); + continue; + } /* 3 = data+metadata+entry */ k = afr_index_for_transaction_type (type); - pending[k] = hton32 (delta_matrix[i][j]); + pending[k] = hton32 (delta_matrix[i][j]); - ret = dict_set_bin (xattr[i], priv->pending_key[j], + if (j == i) { + local_pending = pending; + continue; + } + ret = dict_set_bin (xattr[i], priv->pending_key[j], pending, - 3 * sizeof (int32_t)); - } - } - - return 0; + AFR_NUM_CHANGE_LOGS * sizeof (int32_t)); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "Unable to set dict value."); + GF_FREE (pending); + } + } + if (local_pending) { + ret = dict_set_bin (xattr[i], priv->pending_key[i], + local_pending, + AFR_NUM_CHANGE_LOGS * sizeof (int32_t)); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "Unable to set dict value."); + GF_FREE (local_pending); + } + } + } + return 0; } int -afr_sh_has_metadata_pending (dict_t *xattr, int child_count, xlator_t *this) +afr_sh_missing_entries_done (call_frame_t *frame, xlator_t *this) { - afr_private_t *priv = NULL; - int32_t *pending = NULL; - void *tmp_pending = NULL; /* This is required to remove 'type-punned' warnings from gcc */ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - int ret = -1; - int i = 0; - int j = 0; - - priv = this->private; - - for (i = 0; i < priv->child_count; i++) { - ret = dict_get_ptr (xattr, priv->pending_key[i], - &tmp_pending); + local = frame->local; + sh = &local->self_heal; - if (ret != 0) - return 0; - - pending = tmp_pending; + afr_sh_reset (frame, this); - j = afr_index_for_transaction_type (AFR_METADATA_TRANSACTION); + if (local->unhealable) { + gf_log (this->name, GF_LOG_DEBUG, + "split brain found, aborting selfheal of %s", + local->loc.path); + } - if (pending[j]) - return 1; + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + sh->completion_cbk (frame, this); + } else { + gf_log (this->name, GF_LOG_TRACE, + "proceeding to metadata check on %s", + local->loc.path); + afr_self_heal_metadata (frame, this); } - return 0; + return 0; } -int -afr_sh_has_data_pending (dict_t *xattr, int child_count, xlator_t *this) +static int +afr_sh_missing_entries_finish (call_frame_t *frame, xlator_t *this) { - afr_private_t *priv = NULL; - int32_t *pending = NULL; - void *tmp_pending = NULL; /* This is required to remove 'type-punned' warnings from gcc */ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; - int ret = -1; - int i = 0; - int j = 0; + local = frame->local; + int_lock = &local->internal_lock; - priv = this->private; + int_lock->lock_cbk = afr_sh_missing_entries_done; + afr_unlock (frame, this); - for (i = 0; i < priv->child_count; i++) { - ret = dict_get_ptr (xattr, priv->pending_key[i], - &tmp_pending); + return 0; +} - if (ret != 0) - return 0; - - pending = tmp_pending; +int +afr_sh_common_create (afr_self_heal_t *sh, unsigned int child_count) +{ + int ret = -ENOMEM; + sh->buf = GF_CALLOC (child_count, sizeof (*sh->buf), + gf_afr_mt_iatt); + if (!sh->buf) + goto out; + sh->parentbufs = GF_CALLOC (child_count, sizeof (*sh->parentbufs), + gf_afr_mt_iatt); + if (!sh->parentbufs) + goto out; + sh->child_errno = GF_CALLOC (child_count, sizeof (*sh->child_errno), + gf_afr_mt_int); + if (!sh->child_errno) + goto out; + sh->success_children = afr_children_create (child_count); + if (!sh->success_children) + goto out; + sh->fresh_children = afr_children_create (child_count); + if (!sh->fresh_children) + goto out; + sh->xattr = GF_CALLOC (child_count, sizeof (*sh->xattr), + gf_afr_mt_dict_t); + if (!sh->xattr) + goto out; + ret = 0; +out: + return ret; +} - j = afr_index_for_transaction_type (AFR_DATA_TRANSACTION); +void +afr_sh_common_lookup_resp_handler (call_frame_t *frame, void *cookie, + xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *buf, + dict_t *xattr, struct iatt *postparent, + loc_t *loc) +{ + int child_index = 0; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + priv = this->private; + sh = &local->self_heal; + child_index = (long) cookie; + + LOCK (&frame->lock); + { + if (op_ret == 0) { + sh->buf[child_index] = *buf; + sh->parentbufs[child_index] = *postparent; + sh->success_children[sh->success_count] = child_index; + sh->success_count++; + sh->xattr[child_index] = dict_ref (xattr); + } else { + gf_log (this->name, GF_LOG_DEBUG, "path %s on subvolume" + " %s => -1 (%s)", loc->path, + priv->children[child_index]->name, + strerror (op_errno)); + local->self_heal.child_errno[child_index] = op_errno; + } + } + UNLOCK (&frame->lock); + return; +} - if (pending[j]) - return 1; +gf_boolean_t +afr_valid_ia_type (ia_type_t ia_type) +{ + switch (ia_type) { + case IA_IFSOCK: + case IA_IFREG: + case IA_IFBLK: + case IA_IFCHR: + case IA_IFIFO: + case IA_IFLNK: + case IA_IFDIR: + return _gf_true; + default: + return _gf_false; } + return _gf_false; +} - return 0; +int +afr_impunge_frame_create (call_frame_t *frame, xlator_t *this, + int active_source, call_frame_t **impunge_frame) +{ + afr_local_t *local = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + int32_t op_errno = 0; + afr_private_t *priv = NULL; + int ret = 0; + call_frame_t *new_frame = NULL; + + op_errno = ENOMEM; + priv = this->private; + new_frame = copy_frame (frame); + if (!new_frame) { + goto out; + } + + AFR_LOCAL_ALLOC_OR_GOTO (impunge_local, out); + + local = frame->local; + new_frame->local = impunge_local; + impunge_sh = &impunge_local->self_heal; + impunge_sh->sh_frame = frame; + impunge_sh->active_source = active_source; + impunge_local->child_up = memdup (local->child_up, + sizeof (*local->child_up) * + priv->child_count); + if (!impunge_local->child_up) + goto out; + + impunge_local->pending = afr_matrix_create (priv->child_count, + AFR_NUM_CHANGE_LOGS); + if (!impunge_local->pending) + goto out; + + ret = afr_sh_common_create (impunge_sh, priv->child_count); + if (ret) { + op_errno = -ret; + goto out; + } + op_errno = 0; + *impunge_frame = new_frame; +out: + if (op_errno && new_frame) + AFR_STACK_DESTROY (new_frame); + return -op_errno; } +void +afr_sh_missing_entry_call_impunge_recreate (call_frame_t *frame, xlator_t *this, + struct iatt *buf, + struct iatt *postparent, + afr_impunge_done_cbk_t impunge_done) +{ + call_frame_t *impunge_frame = NULL; + afr_local_t *local = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *sh = NULL; + afr_self_heal_t *impunge_sh = NULL; + int ret = 0; + unsigned int enoent_count = 0; + afr_private_t *priv = NULL; + int i = 0; + int32_t op_errno = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + enoent_count = afr_errno_count (NULL, sh->child_errno, + priv->child_count, ENOENT); + if (!enoent_count) { + gf_log (this->name, GF_LOG_INFO, + "no missing files - %s. proceeding to metadata check", + local->loc.path); + goto out; + } + sh->impunge_done = impunge_done; + ret = afr_impunge_frame_create (frame, this, sh->source, &impunge_frame); + if (ret) + goto out; + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + loc_copy (&impunge_local->loc, &local->loc); + ret = afr_build_parent_loc (&impunge_sh->parent_loc, + &impunge_local->loc, &op_errno); + if (ret) { + ret = -op_errno; + goto out; + } + impunge_local->call_count = enoent_count; + impunge_sh->entrybuf = sh->buf[sh->source]; + impunge_sh->parentbuf = sh->parentbufs[sh->source]; + for (i = 0; i < priv->child_count; i++) { + if (!impunge_local->child_up[i]) { + impunge_sh->child_errno[i] = ENOTCONN; + continue; + } + if (sh->child_errno[i] != ENOENT) { + impunge_sh->child_errno[i] = EEXIST; + continue; + } + } + for (i = 0; i < priv->child_count; i++) { + if (sh->child_errno[i] != ENOENT) + continue; + afr_sh_entry_impunge_create (impunge_frame, this, i); + enoent_count--; + } + GF_ASSERT (!enoent_count); + return; +out: + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "impunge of %s failed, " + "reason: %s", local->loc.path, strerror (-ret)); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } + afr_sh_missing_entries_finish (frame, this); +} int -afr_sh_has_entry_pending (dict_t *xattr, int child_count, xlator_t *this) +afr_sh_create_entry_cbk (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) { - afr_private_t *priv = NULL; - int32_t *pending = NULL; - void *tmp_pending = NULL; /* This is required to remove 'type-punned' warnings from gcc */ - - int ret = -1; - int i = 0; - int j = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + if (op_ret < 0) + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_missing_entries_finish (frame, this); + return 0; +} - priv = this->private; +static int +sh_missing_entries_create (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int type = 0; + struct iatt *buf = NULL; + struct iatt *postparent = NULL; + + local = frame->local; + sh = &local->self_heal; + + buf = &sh->buf[sh->source]; + postparent = &sh->parentbufs[sh->source]; + + type = buf->ia_type; + if (!afr_valid_ia_type (type)) { + gf_log (this->name, GF_LOG_ERROR, + "%s: unknown file type: 0%o", local->loc.path, type); + afr_set_local_for_unhealable (local); + afr_sh_missing_entries_finish (frame, this); + goto out; + } - for (i = 0; i < priv->child_count; i++) { - ret = dict_get_ptr (xattr, priv->pending_key[i], - &tmp_pending); + afr_sh_missing_entry_call_impunge_recreate (frame, this, + buf, postparent, + afr_sh_create_entry_cbk); +out: + return 0; +} - if (ret != 0) - return 0; - - pending = tmp_pending; +void +afr_sh_missing_entries_lookup_done (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + ia_type_t ia_type = IA_INVAL; + int32_t nsources = 0; + loc_t *loc = NULL; + int32_t subvol_status = 0; + afr_transaction_type txn_type = AFR_DATA_TRANSACTION; + gf_boolean_t split_brain = _gf_false; + int read_child = -1; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + loc = &local->loc; + + if (op_ret < 0) { + if (op_errno == EIO) { + afr_set_local_for_unhealable (local); + } + // EIO can happen if finding the fresh parent dir failed + goto out; + } - j = afr_index_for_transaction_type (AFR_ENTRY_TRANSACTION); + //now No chance for the ia_type to conflict + ia_type = sh->buf[sh->success_children[0]].ia_type; + txn_type = afr_transaction_type_get (ia_type); + nsources = afr_build_sources (this, sh->xattr, sh->buf, + sh->pending_matrix, sh->sources, + sh->success_children, txn_type, + &subvol_status, _gf_false); + if (nsources < 0) { + gf_log (this->name, GF_LOG_INFO, "No sources for dir of %s," + " in missing entry self-heal, continuing with the rest" + " of the self-heals", local->loc.path); + if (subvol_status & SPLIT_BRAIN) { + split_brain = _gf_true; + switch (txn_type) { + case AFR_DATA_TRANSACTION: + nsources = 1; + sh->sources[sh->success_children[0]] = 1; + break; + case AFR_ENTRY_TRANSACTION: + read_child = afr_get_no_xattr_dir_read_child + (this, + sh->success_children, + sh->buf); + sh->sources[read_child] = 1; + nsources = 1; + break; + default: + op_errno = EIO; + goto out; + } + } else { + op_errno = EIO; + goto out; + } + } - if (pending[j]) - return 1; + afr_get_fresh_children (sh->success_children, sh->sources, + sh->fresh_children, priv->child_count); + sh->source = sh->fresh_children[0]; + if (sh->source == -1) { + gf_log (this->name, GF_LOG_DEBUG, "No active sources found."); + op_errno = EIO; + goto out; } - return 0; + if (sh->gfid_sh_success_cbk) + sh->gfid_sh_success_cbk (frame, this); + sh->type = sh->buf[sh->source].ia_type; + if (uuid_is_null (loc->inode->gfid)) + uuid_copy (loc->gfid, sh->buf[sh->source].ia_gfid); + if (split_brain) { + afr_sh_missing_entries_finish (frame, this); + } else { + sh_missing_entries_create (frame, this); + } + return; +out: + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_set_error (sh, op_errno); + afr_sh_missing_entries_finish (frame, this); + return; } +static int +afr_sh_common_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, dict_t *xattr, + struct iatt *postparent) +{ + int call_count = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + afr_sh_common_lookup_resp_handler (frame, cookie, this, op_ret, + op_errno, inode, buf, xattr, + postparent, &sh->lookup_loc); + call_count = afr_frame_return (frame); + + if (call_count) + goto out; + op_ret = -1; + if (!sh->success_count) { + op_errno = afr_resultant_errno_get (NULL, sh->child_errno, + priv->child_count); + gf_log (this->name, GF_LOG_ERROR, "Failed to lookup %s, " + "reason %s", sh->lookup_loc.path, + strerror (op_errno)); + goto done; + } -/** - * is_matrix_zero - return true if pending matrix is all zeroes - */ + if ((sh->lookup_flags & AFR_LOOKUP_FAIL_CONFLICTS) && + (afr_conflicting_iattrs (sh->buf, sh->success_children, + priv->child_count, + sh->lookup_loc.path, this->name))) { + op_errno = EIO; + gf_log (this->name, GF_LOG_ERROR, "Conflicting entries " + "for %s", sh->lookup_loc.path); + goto done; + } -int -afr_sh_is_matrix_zero (int32_t *pending_matrix[], int child_count) -{ - int i, j; + if ((sh->lookup_flags & AFR_LOOKUP_FAIL_MISSING_GFIDS) && + (afr_gfid_missing_count (this->name, sh->success_children, + sh->buf, priv->child_count, + sh->lookup_loc.path))) { + op_errno = ENODATA; + gf_log (this->name, GF_LOG_ERROR, "Missing Gfids " + "for %s", sh->lookup_loc.path); + goto done; + } + op_ret = 0; - for (i = 0; i < child_count; i++) - for (j = 0; j < child_count; j++) - if (pending_matrix[i][j]) - return 0; - return 1; +done: + sh->lookup_done (frame, this, op_ret, op_errno); +out: + return 0; } - int -afr_sh_missing_entries_done (call_frame_t *frame, xlator_t *this) +afr_sh_remove_entry_cbk (call_frame_t *frame, xlator_t *this, int child, + int32_t op_ret, int32_t op_errno) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int i = 0; - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - -// memset (sh->child_errno, 0, sizeof (int) * priv->child_count); - memset (sh->buf, 0, sizeof (struct stat) * priv->child_count); - - for (i = 0; i < priv->child_count; i++) { - if (sh->xattr[i]) - dict_unref (sh->xattr[i]); - sh->xattr[i] = NULL; - } + int call_count = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + + GF_ASSERT (sh->post_remove_call); + if ((op_ret == -1) && (op_errno != ENOENT)) { + gf_log (this->name, GF_LOG_ERROR, + "purge entry %s failed, on child %d reason, %s", + local->loc.path, child, strerror (op_errno)); + LOCK (&frame->lock); + { + afr_sh_set_error (sh, EIO); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } + UNLOCK (&frame->lock); + } + call_count = afr_frame_return (frame); + if (call_count == 0) + sh->post_remove_call (frame, this); + return 0; +} - if (local->govinda_gOvinda) { - gf_log (this->name, GF_LOG_TRACE, - "aborting selfheal of %s", - local->loc.path); - sh->completion_cbk (frame, this); - } else { - gf_log (this->name, GF_LOG_TRACE, - "proceeding to metadata check on %s", - local->loc.path); - afr_self_heal_metadata (frame, this); - } +void +afr_sh_call_entry_expunge_remove (call_frame_t *frame, xlator_t *this, + int child_index, struct iatt *buf, + struct iatt *parentbuf, + afr_expunge_done_cbk_t expunge_done) +{ + call_frame_t *expunge_frame = NULL; + afr_local_t *local = NULL; + afr_local_t *expunge_local = NULL; + afr_self_heal_t *sh = NULL; + afr_self_heal_t *expunge_sh = NULL; + int32_t op_errno = 0; + int ret = 0; + + expunge_frame = copy_frame (frame); + if (!expunge_frame) { + goto out; + } - return 0; + AFR_LOCAL_ALLOC_OR_GOTO (expunge_local, out); + + local = frame->local; + sh = &local->self_heal; + expunge_frame->local = expunge_local; + expunge_sh = &expunge_local->self_heal; + expunge_sh->sh_frame = frame; + loc_copy (&expunge_local->loc, &local->loc); + ret = afr_build_parent_loc (&expunge_sh->parent_loc, + &expunge_local->loc, &op_errno); + if (ret) { + ret = -op_errno; + goto out; + } + sh->expunge_done = expunge_done; + afr_sh_entry_expunge_remove (expunge_frame, this, child_index, buf, + parentbuf); + return; +out: + gf_log (this->name, GF_LOG_ERROR, "Expunge of %s failed, reason: %s", + local->loc.path, strerror (op_errno)); + expunge_done (frame, this, child_index, -1, op_errno); } +void +afr_sh_remove_stale_lookup_info (afr_self_heal_t *sh, int32_t *success_children, + int32_t *fresh_children, + unsigned int child_count) +{ + int i = 0; + + for (i = 0; i < child_count; i++) { + if (afr_is_child_present (success_children, child_count, i) && + !afr_is_child_present (fresh_children, child_count, i)) { + sh->child_errno[i] = ENOENT; + GF_ASSERT (sh->xattr[i]); + dict_unref (sh->xattr[i]); + sh->xattr[i] = NULL; + } + } +} int -sh_missing_entries_unlck_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno) +afr_sh_purge_stale_entries_done (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + local = frame->local; + sh = &local->self_heal; + priv = this->private; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + afr_sh_missing_entries_finish (frame, this); + } else { + if (afr_gfid_missing_count (this->name, sh->fresh_children, + sh->buf, priv->child_count, + local->loc.path)) { + afr_sh_common_lookup (frame, this, &local->loc, + afr_sh_missing_entries_lookup_done, + sh->sh_gfid_req, + AFR_LOOKUP_FAIL_CONFLICTS| + AFR_LOOKUP_FAIL_MISSING_GFIDS, + NULL); + } else { + //No need to set gfid so goto missing entries lookup done + //Behave as if you have done the lookup + afr_sh_remove_stale_lookup_info (sh, + sh->success_children, + sh->fresh_children, + priv->child_count); + afr_children_copy (sh->success_children, + sh->fresh_children, + priv->child_count); + afr_sh_missing_entries_lookup_done (frame, this, 0, 0); + } + } + return 0; +} - LOCK (&frame->lock); - { - } - UNLOCK (&frame->lock); +gf_boolean_t +afr_sh_purge_entry_condition (afr_local_t *local, afr_private_t *priv, + int child) +{ + afr_self_heal_t *sh = NULL; - call_count = afr_frame_return (frame); + sh = &local->self_heal; - if (call_count == 0) { - afr_sh_missing_entries_done (frame, this); - } + if (local->child_up[child] && + (!afr_is_child_present (sh->fresh_parent_dirs, priv->child_count, + child)) + && (sh->child_errno[child] != ENOENT)) + return _gf_true; - return 0; + return _gf_false; } - -static int -sh_missing_entries_finish (call_frame_t *frame, xlator_t *this) +gf_boolean_t +afr_sh_purge_stale_entry_condition (afr_local_t *local, afr_private_t *priv, + int child) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - int i = 0; - int call_count = 0; - afr_self_heal_t *sh = NULL; + afr_self_heal_t *sh = NULL; + sh = &local->self_heal; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + if (local->child_up[child] && + (!afr_is_child_present (sh->fresh_children, priv->child_count, + child)) + && (sh->child_errno[child] != ENOENT)) + return _gf_true; - call_count = local->child_count; + return _gf_false; +} - local->call_count = call_count; +void +afr_sh_purge_entry_common (call_frame_t *frame, xlator_t *this, + gf_boolean_t purge_condition (afr_local_t *local, + afr_private_t *priv, + int child)) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + int i = 0; + int call_count = 0; - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - gf_log (this->name, GF_LOG_TRACE, - "unlocking %"PRId64"/%s on subvolume %s", - sh->parent_loc.inode->ino, local->loc.name, - priv->children[i]->name); + local = frame->local; + sh = &local->self_heal; + priv = this->private; - STACK_WIND (frame, sh_missing_entries_unlck_cbk, - priv->children[i], - priv->children[i]->fops->entrylk, - this->name, - &sh->parent_loc, local->loc.name, - ENTRYLK_UNLOCK, ENTRYLK_WRLCK); + for (i = 0; i < priv->child_count; i++) { + if (purge_condition (local, priv, i)) + call_count++; + } - if (!--call_count) - break; - } - } - return 0; -} + if (call_count == 0) { + sh->post_remove_call (frame, this); + goto out; + } + local->call_count = call_count; + for (i = 0; i < priv->child_count; i++) { + if (!purge_condition (local, priv, i)) + continue; + gf_log (this->name, GF_LOG_INFO, "purging the stale entry %s " + "on %s", local->loc.path, priv->children[i]->name); + afr_sh_call_entry_expunge_remove (frame, this, + (long) i, &sh->buf[i], + &sh->parentbufs[i], + afr_sh_remove_entry_cbk); + } +out: + return; +} -static int -sh_destroy_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int op_errno, struct stat *stbuf) +void +afr_sh_purge_entry (call_frame_t *frame, xlator_t *this) { - STACK_DESTROY (frame->root); - return 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + sh->post_remove_call = afr_sh_missing_entries_finish; + + afr_sh_purge_entry_common (frame, this, afr_sh_purge_entry_condition); } +void +afr_sh_purge_stale_entry (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int i = 0; -static int -sh_missing_entries_newentry_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *stbuf) -{ - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - call_frame_t *chown_frame = NULL; - int call_count = 0; - int child_index = 0; - struct stat *buf = NULL; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - buf = &sh->buf[sh->source]; - child_index = (long) cookie; - - if (op_ret == 0) { - chown_frame = copy_frame (frame); - - gf_log (this->name, GF_LOG_TRACE, - "chown %s to %d %d on subvolume %s", - local->loc.path, buf->st_uid, buf->st_gid, - priv->children[child_index]->name); - - STACK_WIND (chown_frame, sh_destroy_cbk, - priv->children[child_index], - priv->children[child_index]->fops->chown, - &local->loc, - buf->st_uid, buf->st_gid); - } + local = frame->local; + sh = &local->self_heal; + priv = this->private; - LOCK (&frame->lock); - { - } - UNLOCK (&frame->lock); + sh->post_remove_call = afr_sh_purge_stale_entries_done; - call_count = afr_frame_return (frame); + for (i = 0; i < priv->child_count; i++) { + if (afr_is_child_present (sh->fresh_children, + priv->child_count, i)) + continue; - if (call_count == 0) { - sh_missing_entries_finish (frame, this); - } + if ((!local->child_up[i]) || sh->child_errno[i] != 0) + continue; - return 0; + GF_ASSERT (!uuid_is_null (sh->entrybuf.ia_gfid) || + uuid_is_null (sh->buf[i].ia_gfid)); + + if ((sh->entrybuf.ia_type != sh->buf[i].ia_type) || + (uuid_compare (sh->buf[i].ia_gfid, + sh->entrybuf.ia_gfid))) + continue; + + afr_children_add_child (sh->fresh_children, i, + priv->child_count); + + } + afr_sh_purge_entry_common (frame, this, + afr_sh_purge_stale_entry_condition); } +void +afr_sh_save_child_iatts_from_policy (int32_t *children, struct iatt *bufs, + struct iatt *save, + unsigned int child_count) +{ + int i = 0; + int child = 0; + gf_boolean_t saved = _gf_false; -static int -sh_missing_entries_mknod (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int i = 0; - int enoent_count = 0; - int call_count = 0; - mode_t st_mode = 0; - dev_t st_dev = 0; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - for (i = 0; i < priv->child_count; i++) - if (sh->child_errno[i] == ENOENT) - enoent_count++; - - call_count = enoent_count; - local->call_count = call_count; - - st_mode = sh->buf[sh->source].st_mode; - st_dev = sh->buf[sh->source].st_dev; - - gf_log (this->name, GF_LOG_TRACE, - "mknod %s mode 0%o on %d subvolumes", - local->loc.path, st_mode, enoent_count); - - for (i = 0; i < priv->child_count; i++) { - if (sh->child_errno[i] == ENOENT) { - STACK_WIND_COOKIE (frame, - sh_missing_entries_newentry_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->mknod, - &local->loc, st_mode, st_dev); - if (!--call_count) - break; - } - } + GF_ASSERT (save); + //if iatt buf with gfid exists sets it + for (i = 0; i < child_count; i++) { + child = children[i]; + if (child == -1) + break; + *save = bufs[child]; + saved = _gf_true; + if (!uuid_is_null (save->ia_gfid)) + break; + } + GF_ASSERT (saved); +} - return 0; +void +afr_get_children_of_fresh_parent_dirs (afr_self_heal_t *sh, + unsigned int child_count) +{ + afr_children_intersection_get (sh->success_children, + sh->fresh_parent_dirs, + sh->sources, child_count); + afr_get_fresh_children (sh->success_children, sh->sources, + sh->fresh_children, child_count); + memset (sh->sources, 0, sizeof (*sh->sources) * child_count); } +void +afr_sh_children_lookup_done (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int32_t fresh_child_enoents = 0; + int32_t fresh_parent_count = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + if (op_ret < 0) + goto fail; + afr_get_children_of_fresh_parent_dirs (sh, priv->child_count); + fresh_parent_count = afr_get_children_count (sh->fresh_parent_dirs, + priv->child_count); + //we need the enoent count of the subvols present in fresh_parent_dirs + fresh_child_enoents = afr_errno_count (sh->fresh_parent_dirs, + sh->child_errno, + priv->child_count, ENOENT); + if (fresh_child_enoents == fresh_parent_count) { + afr_sh_set_error (sh, ENOENT); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_purge_entry (frame, this); + } else if (!afr_conflicting_iattrs (sh->buf, sh->fresh_children, + priv->child_count, local->loc.path, + this->name)) { + afr_sh_save_child_iatts_from_policy (sh->fresh_children, + sh->buf, &sh->entrybuf, + priv->child_count); + afr_update_gfid_from_iatts (sh->sh_gfid_req, sh->buf, + sh->fresh_children, + priv->child_count); + afr_sh_purge_stale_entry (frame, this); + } else { + op_errno = EIO; + afr_set_local_for_unhealable (local); + goto fail; + } -static int -sh_missing_entries_mkdir (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int i = 0; - int enoent_count = 0; - int call_count = 0; - mode_t st_mode = 0; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - for (i = 0; i < priv->child_count; i++) - if (sh->child_errno[i] == ENOENT) - enoent_count++; - - call_count = enoent_count; - local->call_count = call_count; - - st_mode = sh->buf[sh->source].st_mode; - - gf_log (this->name, GF_LOG_TRACE, - "mkdir %s mode 0%o on %d subvolumes", - local->loc.path, st_mode, enoent_count); - - for (i = 0; i < priv->child_count; i++) { - if (sh->child_errno[i] == ENOENT) { - STACK_WIND_COOKIE (frame, - sh_missing_entries_newentry_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->mkdir, - &local->loc, st_mode); - if (!--call_count) - break; - } - } + return; - return 0; +fail: + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_set_error (sh, op_errno); + afr_sh_missing_entries_finish (frame, this); + return; } +static void +afr_sh_find_fresh_parents (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int enoent_count = 0; + int nsources = 0; + int source = -1; + int32_t subvol_status = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + if (op_ret < 0) + goto out; + enoent_count = afr_errno_count (NULL, sh->child_errno, + priv->child_count, ENOENT); + if (enoent_count > 0) { + gf_log (this->name, GF_LOG_INFO, "Parent dir missing for %s," + " in missing entry self-heal, aborting missing-entry " + "self-heal", + local->loc.path); + afr_sh_missing_entries_finish (frame, this); + return; + } -static int -sh_missing_entries_symlink (call_frame_t *frame, xlator_t *this, - const char *link) -{ - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int i = 0; - int enoent_count = 0; - int call_count = 0; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - for (i = 0; i < priv->child_count; i++) - if (sh->child_errno[i] == ENOENT) - enoent_count++; - - call_count = enoent_count; - local->call_count = call_count; - - gf_log (this->name, GF_LOG_TRACE, - "symlink %s -> %s on %d subvolumes", - local->loc.path, link, enoent_count); - - for (i = 0; i < priv->child_count; i++) { - if (sh->child_errno[i] == ENOENT) { - STACK_WIND_COOKIE (frame, - sh_missing_entries_newentry_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->symlink, - link, &local->loc); - if (!--call_count) - break; - } - } + nsources = afr_build_sources (this, sh->xattr, sh->buf, + sh->pending_matrix, sh->sources, + sh->success_children, + AFR_ENTRY_TRANSACTION, &subvol_status, + _gf_true); + if ((subvol_status & ALL_FOOLS) || + (subvol_status & SPLIT_BRAIN)) { + gf_log (this->name, GF_LOG_INFO, "%s: Performing conservative " + "merge", sh->parent_loc.path); + afr_mark_success_children_sources (sh->sources, + sh->success_children, + priv->child_count); + } else if (nsources < 0) { + gf_log (this->name, GF_LOG_ERROR, "No sources for dir " + "of %s, in missing entry self-heal, aborting " + "self-heal", local->loc.path); + op_errno = EIO; + goto out; + } - return 0; + source = afr_sh_select_source (sh->sources, priv->child_count); + if (source == -1) { + GF_ASSERT (0); + gf_log (this->name, GF_LOG_DEBUG, "No active sources found."); + op_errno = EIO; + goto out; + } + afr_get_fresh_children (sh->success_children, sh->sources, + sh->fresh_parent_dirs, priv->child_count); + afr_sh_common_lookup (frame, this, &local->loc, + afr_sh_children_lookup_done, NULL, 0, + NULL); + return; + +out: + afr_sh_set_error (sh, op_errno); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_missing_entries_finish (frame, this); + return; } +void +afr_sh_common_reset (afr_self_heal_t *sh, unsigned int child_count) +{ + int i = 0; + + for (i = 0; i < child_count; i++) { + memset (&sh->buf[i], 0, sizeof (sh->buf[i])); + memset (&sh->parentbufs[i], 0, sizeof (sh->parentbufs[i])); + sh->child_errno[i] = 0; + } + memset (&sh->parentbuf, 0, sizeof (sh->parentbuf)); + sh->success_count = 0; + afr_reset_children (sh->success_children, child_count); + afr_reset_children (sh->fresh_children, child_count); + afr_reset_xattr (sh->xattr, child_count); + loc_wipe (&sh->lookup_loc); +} -static int -sh_missing_entries_readlink_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - const char *link) +/* afr self-heal state will be lost if this call is made + * please check the afr_sh_common_reset that is called in this function + */ +int +afr_sh_common_lookup (call_frame_t *frame, xlator_t *this, loc_t *loc, + afr_lookup_done_cbk_t lookup_done , uuid_t gfid, + int32_t flags, dict_t *xdata) { - if (op_ret > 0) - sh_missing_entries_symlink (frame, this, link); - else - sh_missing_entries_finish (frame, this); + afr_local_t *local = NULL; + int i = 0; + int call_count = 0; + afr_private_t *priv = NULL; + dict_t *xattr_req = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + priv = this->private; + sh = &local->self_heal; + + call_count = afr_up_children_count (local->child_up, priv->child_count); + + local->call_count = call_count; + + xattr_req = dict_new(); + + if (xattr_req) { + afr_xattr_req_prepare (this, xattr_req, loc->path); + if (gfid) { + gf_log (this->name, GF_LOG_DEBUG, + "looking up %s with gfid: %s", + loc->path, uuid_utoa (gfid)); + GF_ASSERT (!uuid_is_null (gfid)); + afr_set_dict_gfid (xattr_req, gfid); + } + } - return 0; + afr_sh_common_reset (sh, priv->child_count); + sh->lookup_done = lookup_done; + loc_copy (&sh->lookup_loc, loc); + sh->lookup_flags = flags; + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + gf_log (this->name, GF_LOG_DEBUG, + "looking up %s on subvolume %s", + loc->path, priv->children[i]->name); + + STACK_WIND_COOKIE (frame, + afr_sh_common_lookup_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->lookup, + loc, xattr_req); + + if (!--call_count) + break; + } + } + + if (xattr_req) + dict_unref (xattr_req); + + return 0; } -static int -sh_missing_entries_readlink (call_frame_t *frame, xlator_t *this) + +int +afr_sh_post_nb_entrylk_missing_entry_sh_cbk (call_frame_t *frame, + xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + int_lock = &local->internal_lock; + sh = &local->self_heal; + + if (int_lock->lock_op_ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "Non blocking entrylks failed."); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_missing_entries_done (frame, this); + } else { + gf_log (this->name, GF_LOG_DEBUG, + "Non blocking entrylks done. Proceeding to FOP"); + afr_sh_common_lookup (frame, this, &sh->parent_loc, + afr_sh_find_fresh_parents, + NULL, AFR_LOOKUP_FAIL_CONFLICTS, + NULL); + } - local = frame->local; - sh = &local->self_heal; - priv = this->private; + return 0; +} - STACK_WIND (frame, sh_missing_entries_readlink_cbk, - priv->children[sh->source], - priv->children[sh->source]->fops->readlink, - &local->loc, 4096); +int +afr_sh_entrylk (call_frame_t *frame, xlator_t *this, loc_t *loc, + char *base_name, afr_lock_cbk_t lock_cbk) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; - return 0; + priv = this->private; + local = frame->local; + int_lock = &local->internal_lock; + + int_lock->transaction_lk_type = AFR_SELFHEAL_LK; + int_lock->selfheal_lk_type = AFR_ENTRY_SELF_HEAL_LK; + + afr_set_lock_number (frame, this); + + int_lock->lk_basename = base_name; + int_lock->lk_loc = loc; + int_lock->lock_cbk = lock_cbk; + int_lock->domain = this->name; + + int_lock->lockee_count = 0; + afr_init_entry_lockee (&int_lock->lockee[0], local, loc, + base_name, priv->child_count); + int_lock->lockee_count++; + afr_nonblocking_entrylk (frame, this); + + return 0; } +static int +afr_self_heal_parent_entrylk (call_frame_t *frame, xlator_t *this, + afr_lock_cbk_t lock_cbk) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_internal_lock_t *int_lock = NULL; + int ret = -1; + int32_t op_errno = 0; + + local = frame->local; + sh = &local->self_heal; + + gf_log (this->name, GF_LOG_TRACE, + "attempting to recreate missing entries for path=%s", + local->loc.path); + + ret = afr_build_parent_loc (&sh->parent_loc, &local->loc, &op_errno); + if (ret) + goto out; + + afr_sh_entrylk (frame, this, &sh->parent_loc, NULL, + lock_cbk); + return 0; +out: + int_lock = &local->internal_lock; + int_lock->lock_op_ret = -1; + lock_cbk (frame, this); + return 0; +} static int -sh_missing_entries_create (call_frame_t *frame, xlator_t *this) +afr_self_heal_missing_entries (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int type = 0; - int i = 0; - afr_private_t *priv = NULL; - int enoent_count = 0; - int govinda_gOvinda = 0; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - for (i = 0; i < priv->child_count; i++) { - if (sh->child_errno[i]) { - if (sh->child_errno[i] == ENOENT) - enoent_count++; - } else { - if (type) { - if (type != (sh->buf[i].st_mode & S_IFMT)) - govinda_gOvinda = 1; - } else { - sh->source = i; - type = sh->buf[i].st_mode & S_IFMT; - } - } - } + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - if (govinda_gOvinda) { - gf_log (this->name, GF_LOG_ERROR, - "conflicing filetypes exist for path %s. returning.", - local->loc.path); + local = frame->local; + sh = &local->self_heal; - local->govinda_gOvinda = 1; - sh_missing_entries_finish (frame, this); - return 0; - } + sh->sh_type_in_action = AFR_SELF_HEAL_GFID_OR_MISSING_ENTRY; - if (!type) { - gf_log (this->name, GF_LOG_ERROR, - "no source found for %s. all nodes down?. returning.", - local->loc.path); - /* subvolumes down and/or file does not exist */ - sh_missing_entries_finish (frame, this); - return 0; - } + afr_set_self_heal_status (sh, AFR_SELF_HEAL_STARTED); - if (enoent_count == 0) { - gf_log (this->name, GF_LOG_ERROR, - "no missing files - %s. proceeding to metadata check", - local->loc.path); - /* proceed to next step - metadata self-heal */ - sh_missing_entries_finish (frame, this); - return 0; - } + afr_self_heal_parent_entrylk (frame, this, + afr_sh_post_nb_entrylk_missing_entry_sh_cbk); + return 0; +} - switch (type) { - case S_IFSOCK: - case S_IFREG: - case S_IFBLK: - case S_IFCHR: - case S_IFIFO: - sh_missing_entries_mknod (frame, this); - break; - case S_IFLNK: - sh_missing_entries_readlink (frame, this); - break; - case S_IFDIR: - sh_missing_entries_mkdir (frame, this); - break; - default: - gf_log (this->name, GF_LOG_ERROR, - "unknown file type: 0%o", type); - local->govinda_gOvinda = 1; - sh_missing_entries_finish (frame, this); - } +afr_local_t* +afr_self_heal_local_init (afr_local_t *l, xlator_t *this) +{ + afr_private_t *priv = NULL; + afr_local_t *lc = NULL; + afr_self_heal_t *sh = NULL; + afr_self_heal_t *shc = NULL; + int ret = 0; + + priv = this->private; + + sh = &l->self_heal; + + lc = mem_get0 (this->local_pool); + if (!lc) + goto out; + + shc = &lc->self_heal; + + shc->unwind = sh->unwind; + shc->gfid_sh_success_cbk = sh->gfid_sh_success_cbk; + shc->do_missing_entry_self_heal = sh->do_missing_entry_self_heal; + shc->do_gfid_self_heal = sh->do_gfid_self_heal; + shc->do_data_self_heal = sh->do_data_self_heal; + shc->do_metadata_self_heal = sh->do_metadata_self_heal; + shc->do_entry_self_heal = sh->do_entry_self_heal; + shc->force_confirm_spb = sh->force_confirm_spb; + shc->forced_merge = sh->forced_merge; + shc->background = sh->background; + shc->type = sh->type; + shc->data_sh_info = ""; + shc->metadata_sh_info = ""; + + uuid_copy (shc->sh_gfid_req, sh->sh_gfid_req); + if (l->loc.path) { + ret = loc_copy (&lc->loc, &l->loc); + if (ret < 0) + goto out; + } - return 0; + lc->child_up = memdup (l->child_up, + sizeof (*lc->child_up) * priv->child_count); + if (!lc->child_up) { + ret = -1; + goto out; + } + + if (l->xattr_req) + lc->xattr_req = dict_ref (l->xattr_req); + + if (l->cont.lookup.inode) + lc->cont.lookup.inode = inode_ref (l->cont.lookup.inode); + if (l->cont.lookup.xattr) + lc->cont.lookup.xattr = dict_ref (l->cont.lookup.xattr); + + lc->internal_lock.locked_nodes = + GF_CALLOC (sizeof (*l->internal_lock.locked_nodes), + priv->child_count, gf_afr_mt_char); + if (!lc->internal_lock.locked_nodes) { + ret = -1; + goto out; + } + + ret = afr_inodelk_init (&lc->internal_lock.inodelk[0], + this->name, priv->child_count); + if (ret) + goto out; + +out: + if (ret) { + afr_local_cleanup (lc, this); + lc = NULL; + } + return lc; } +int +afr_self_heal_completion_cbk (call_frame_t *bgsh_frame, xlator_t *this) +{ + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + afr_self_heal_t * sh = NULL; + afr_local_t * orig_frame_local = NULL; + afr_self_heal_t * orig_frame_sh = NULL; + char sh_type_str[256] = {0,}; + gf_loglevel_t loglevel = 0; + + priv = this->private; + local = bgsh_frame->local; + sh = &local->self_heal; + + if (local->unhealable) { + afr_set_split_brain (this, sh->inode, SPB, SPB); + } -static int -sh_missing_entries_lookup_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf, dict_t *xattr) -{ - int child_index = 0; - afr_local_t *local = NULL; - int call_count = 0; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - child_index = (long) cookie; - - LOCK (&frame->lock); - { - if (op_ret == 0) { - gf_log (this->name, GF_LOG_TRACE, - "path %s on subvolume %s is of mode 0%o", - local->loc.path, - priv->children[child_index]->name, - buf->st_mode); - - local->self_heal.buf[child_index] = *buf; - } else { - gf_log (this->name, GF_LOG_TRACE, - "path %s on subvolume %s => -1 (%s)", - local->loc.path, - priv->children[child_index]->name, - strerror (op_errno)); - - local->self_heal.child_errno[child_index] = op_errno; - } + afr_self_heal_type_str_get (sh, sh_type_str, + sizeof(sh_type_str)); + if (is_self_heal_failed (sh, AFR_CHECK_ALL) && !priv->shd.iamshd) { + loglevel = GF_LOG_ERROR; + } else if (!is_self_heal_failed (sh, AFR_CHECK_ALL)) { + loglevel = GF_LOG_INFO; + } else { + loglevel = GF_LOG_DEBUG; + } - } - UNLOCK (&frame->lock); + afr_log_self_heal_completion_status (local, loglevel); - call_count = afr_frame_return (frame); + FRAME_SU_UNDO (bgsh_frame, afr_local_t); - if (call_count == 0) { - sh_missing_entries_create (frame, this); - } + if (!sh->unwound && sh->unwind) { + orig_frame_local = sh->orig_frame->local; + orig_frame_sh = &orig_frame_local->self_heal; + orig_frame_sh->actual_sh_started = _gf_true; + sh->unwind (sh->orig_frame, this, sh->op_ret, sh->op_errno, + is_self_heal_failed (sh, AFR_CHECK_ALL)); + } - return 0; + if (sh->background) { + LOCK (&priv->lock); + { + priv->background_self_heals_started--; + } + UNLOCK (&priv->lock); + } + + AFR_STACK_DESTROY (bgsh_frame); + + return 0; } +int +afr_self_heal (call_frame_t *frame, xlator_t *this, inode_t *inode) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int32_t op_errno = 0; + int ret = 0; + afr_self_heal_t *orig_sh = NULL; + call_frame_t *sh_frame = NULL; + afr_local_t *sh_local = NULL; + loc_t *loc = NULL; + + local = frame->local; + orig_sh = &local->self_heal; + priv = this->private; + + GF_ASSERT (local->loc.path); + + gf_log (this->name, GF_LOG_TRACE, + "performing self heal on %s (metadata=%d data=%d entry=%d)", + local->loc.path, + local->self_heal.do_metadata_self_heal, + local->self_heal.do_data_self_heal, + local->self_heal.do_entry_self_heal); + + op_errno = ENOMEM; + sh_frame = copy_frame (frame); + if (!sh_frame) + goto out; + afr_set_lk_owner (sh_frame, this, sh_frame->root); + afr_set_low_priority (sh_frame); + + sh_local = afr_self_heal_local_init (local, this); + if (!sh_local) + goto out; + sh_frame->local = sh_local; + sh = &sh_local->self_heal; + + sh->inode = inode_ref (inode); + sh->orig_frame = frame; + + sh->completion_cbk = afr_self_heal_completion_cbk; + + sh->success = GF_CALLOC (priv->child_count, sizeof (*sh->success), + gf_afr_mt_char); + if (!sh->success) + goto out; + sh->sources = GF_CALLOC (sizeof (*sh->sources), priv->child_count, + gf_afr_mt_int); + if (!sh->sources) + goto out; + sh->locked_nodes = GF_CALLOC (sizeof (*sh->locked_nodes), + priv->child_count, + gf_afr_mt_int); + if (!sh->locked_nodes) + goto out; + + sh->pending_matrix = afr_matrix_create (priv->child_count, + priv->child_count); + if (!sh->pending_matrix) + goto out; + + sh->delta_matrix = afr_matrix_create (priv->child_count, + priv->child_count); + if (!sh->delta_matrix) + goto out; + + sh->fresh_parent_dirs = afr_children_create (priv->child_count); + if (!sh->fresh_parent_dirs) + goto out; + ret = afr_sh_common_create (sh, priv->child_count); + if (ret) { + op_errno = -ret; + goto out; + } -static int -sh_missing_entries_lookup (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; - int i = 0; - int call_count = 0; - afr_private_t *priv = NULL; - dict_t *xattr_req = NULL; - int ret = -1; - - local = frame->local; - call_count = local->child_count; - priv = this->private; - - local->call_count = call_count; - - xattr_req = dict_new(); - - if (xattr_req) { - for (i = 0; i < priv->child_count; i++) { - ret = dict_set_uint64 (xattr_req, - priv->pending_key[i], - 3 * sizeof(int32_t)); + if (local->self_heal.background) { + LOCK (&priv->lock); + { + if (priv->background_self_heals_started + < priv->background_self_heal_count) { + priv->background_self_heals_started++; + + + } else { + local->self_heal.background = _gf_false; + sh->background = _gf_false; + } } + UNLOCK (&priv->lock); } - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - gf_log (this->name, GF_LOG_TRACE, - "looking up %s on subvolume %s", - local->loc.path, priv->children[i]->name); + if (!local->loc.parent) { + sh->do_missing_entry_self_heal = _gf_false; + sh->do_gfid_self_heal = _gf_false; + } - STACK_WIND_COOKIE (frame, - sh_missing_entries_lookup_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->lookup, - &local->loc, xattr_req); + sh->sh_type_in_action = AFR_SELF_HEAL_INVALID; - if (!--call_count) - break; - } - } - - if (xattr_req) - dict_unref (xattr_req); + FRAME_SU_DO (sh_frame, afr_local_t); + if (sh->do_missing_entry_self_heal || sh->do_gfid_self_heal) { + afr_self_heal_missing_entries (sh_frame, this); + } else { + loc = &sh_local->loc; + if (uuid_is_null (loc->inode->gfid) && uuid_is_null (loc->gfid)) { + if (!uuid_is_null (inode->gfid)) + GF_ASSERT (!uuid_compare (inode->gfid, + sh->sh_gfid_req)); + uuid_copy (loc->gfid, sh->sh_gfid_req); + } + gf_log (this->name, GF_LOG_TRACE, + "proceeding to metadata check on %s", + local->loc.path); - return 0; + afr_sh_missing_entries_done (sh_frame, this); + } + op_errno = 0; + +out: + if (op_errno) { + orig_sh->unwind (frame, this, -1, op_errno, 1); + if (sh_frame) + AFR_STACK_DESTROY (sh_frame); + } + return 0; } +void +afr_self_heal_type_str_get (afr_self_heal_t *self_heal_p, char *str, + size_t size) +{ + GF_ASSERT (str && (size > strlen (" missing-entry gfid " + "meta-data data entry"))); -static int -sh_missing_entries_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int call_count = 0; - int child_index = (long) cookie; - - - local = frame->local; - sh = &local->self_heal; - - LOCK (&frame->lock); - { - if (op_ret == -1) { - sh->op_failed = 1; - - gf_log (this->name, GF_LOG_DEBUG, - "locking inode of %s on child %d failed: %s", - local->loc.path, child_index, - strerror (op_errno)); - } else { - gf_log (this->name, GF_LOG_TRACE, - "inode of %s on child %d locked", - local->loc.path, child_index); - } - } - UNLOCK (&frame->lock); + if (self_heal_p->do_metadata_self_heal) { + snprintf (str, size, " meta-data"); + } - call_count = afr_frame_return (frame); + if (self_heal_p->do_data_self_heal) { + snprintf (str + strlen(str), size - strlen(str), " data"); + } - if (call_count == 0) { - if (sh->op_failed == 1) { - sh_missing_entries_finish (frame, this); - return 0; - } + if (self_heal_p->do_entry_self_heal) { + snprintf (str + strlen(str), size - strlen(str), " entry"); + } - sh_missing_entries_lookup (frame, this); - } + if (self_heal_p->do_missing_entry_self_heal) { + snprintf (str + strlen(str), size - strlen(str), + " missing-entry"); + } - return 0; + if (self_heal_p->do_gfid_self_heal) { + snprintf (str + strlen(str), size - strlen(str), " gfid"); + } } +afr_self_heal_type +afr_self_heal_type_for_transaction (afr_transaction_type type) +{ + afr_self_heal_type sh_type = AFR_SELF_HEAL_INVALID; + + switch (type) { + case AFR_DATA_TRANSACTION: + sh_type = AFR_SELF_HEAL_DATA; + break; + case AFR_METADATA_TRANSACTION: + sh_type = AFR_SELF_HEAL_METADATA; + break; + case AFR_ENTRY_TRANSACTION: + sh_type = AFR_SELF_HEAL_ENTRY; + break; + case AFR_ENTRY_RENAME_TRANSACTION: + GF_ASSERT (0); + break; + } + return sh_type; +} -static int -afr_self_heal_missing_entries (call_frame_t *frame, xlator_t *this) +int +afr_build_child_loc (xlator_t *this, loc_t *child, loc_t *parent, char *name) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int i = 0; - int call_count = 0; + int ret = -1; + uuid_t pargfid = {0}; + if (!child) + goto out; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + if (!uuid_is_null (parent->inode->gfid)) + uuid_copy (pargfid, parent->inode->gfid); + else if (!uuid_is_null (parent->gfid)) + uuid_copy (pargfid, parent->gfid); - gf_log (this->name, GF_LOG_TRACE, - "attempting to recreate missing entries for path=%s", - local->loc.path); + if (uuid_is_null (pargfid)) + goto out; - afr_build_parent_loc (&sh->parent_loc, &local->loc); + if (strcmp (parent->path, "/") == 0) + ret = gf_asprintf ((char **)&child->path, "/%s", name); + else + ret = gf_asprintf ((char **)&child->path, "%s/%s", parent->path, + name); - call_count = local->child_count; + if (-1 == ret) { + gf_log (this->name, GF_LOG_ERROR, + "asprintf failed while setting child path"); + } - local->call_count = call_count; + child->name = strrchr (child->path, '/'); + if (child->name) + child->name++; - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, sh_missing_entries_lk_cbk, - priv->children[i], - priv->children[i]->fops->entrylk, - this->name, - &sh->parent_loc, local->loc.name, - ENTRYLK_LOCK_NB, ENTRYLK_WRLCK); - if (!--call_count) - break; - } - } + child->parent = inode_ref (parent->inode); + child->inode = inode_new (parent->inode->table); + uuid_copy (child->pargfid, pargfid); - return 0; + if (!child->inode) { + ret = -1; + goto out; + } + + ret = 0; +out: + if ((ret == -1) && child) + loc_wipe (child); + + return ret; } +int +afr_sh_erase_pending (call_frame_t *frame, xlator_t *this, + afr_transaction_type type, afr_fxattrop_cbk_t cbk, + int (*finish)(call_frame_t *frame, xlator_t *this)) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int call_count = 0; + int i = 0; + dict_t **erase_xattr = NULL; + int ret = -1; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + afr_sh_pending_to_delta (priv, sh->xattr, sh->delta_matrix, + sh->success, priv->child_count, type); + + erase_xattr = GF_CALLOC (sizeof (*erase_xattr), priv->child_count, + gf_afr_mt_dict_t); + if (!erase_xattr) + goto out; + + for (i = 0; i < priv->child_count; i++) { + if (sh->xattr[i]) { + call_count++; + erase_xattr[i] = dict_new (); + if (!erase_xattr[i]) + goto out; + } + } + + afr_sh_delta_to_xattr (this, sh->delta_matrix, erase_xattr, + priv->child_count, type); + + gf_log (this->name, GF_LOG_DEBUG, "Delta matrix for: %s", + lkowner_utoa (&frame->root->lk_owner)); + afr_sh_print_pending_matrix (sh->delta_matrix, this); + local->call_count = call_count; + if (call_count == 0) { + ret = 0; + finish (frame, this); + goto out; + } + + for (i = 0; i < priv->child_count; i++) { + if (!erase_xattr[i]) + continue; + + if (sh->healing_fd) {//true for ENTRY, reg file DATA transaction + STACK_WIND_COOKIE (frame, cbk, (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fxattrop, + sh->healing_fd, + GF_XATTROP_ADD_ARRAY, erase_xattr[i], + NULL); + } else { + STACK_WIND_COOKIE (frame, cbk, (void *) (long) i, + priv->children[i], + priv->children[i]->fops->xattrop, + &local->loc, + GF_XATTROP_ADD_ARRAY, erase_xattr[i], + NULL); + } + } + + ret = 0; +out: + if (erase_xattr) { + for (i = 0; i < priv->child_count; i++) { + if (erase_xattr[i]) { + dict_unref (erase_xattr[i]); + } + } + } + + GF_FREE (erase_xattr); + + if (ret < 0) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + finish (frame, this); + } + + return 0; +} + +void +afr_set_self_heal_status(afr_self_heal_t *sh, afr_self_heal_status status) +{ + xlator_t *this = NULL; + afr_sh_status_for_all_type *sh_status = &(sh->afr_all_sh_status); + afr_self_heal_type sh_type_in_action = sh->sh_type_in_action; + this = THIS; + + if (!sh) { + gf_log_callingfn (this->name, GF_LOG_ERROR, "Null self heal" + "Structure"); + goto out; + } + + switch (sh_type_in_action) { + case AFR_SELF_HEAL_GFID_OR_MISSING_ENTRY: + sh_status->gfid_or_missing_entry_self_heal = status; + break; + case AFR_SELF_HEAL_METADATA: + sh_status->metadata_self_heal = status; + break; + case AFR_SELF_HEAL_DATA: + sh_status->data_self_heal = status; + break; + case AFR_SELF_HEAL_ENTRY: + sh_status->entry_self_heal = status; + break; + case AFR_SELF_HEAL_INVALID: + gf_log_callingfn (this->name, GF_LOG_ERROR, "Invalid" + "self heal type in action"); + break; + } +out: + return; +} + +void +afr_set_local_for_unhealable (afr_local_t *local) +{ + afr_self_heal_t *sh = NULL; + + sh = &local->self_heal; + + local->unhealable = 1; + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); +} int -afr_self_heal (call_frame_t *frame, xlator_t *this, - int (*completion_cbk) (call_frame_t *, xlator_t *)) -{ - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int i = 0; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - gf_log (this->name, GF_LOG_TRACE, - "performing self heal on %s (metadata=%d data=%d entry=%d)", - local->loc.path, - local->need_metadata_self_heal, - local->need_data_self_heal, - local->need_entry_self_heal); - - sh->completion_cbk = completion_cbk; - - sh->buf = CALLOC (priv->child_count, sizeof (struct stat)); - sh->child_errno = CALLOC (priv->child_count, sizeof (int)); - sh->success = CALLOC (priv->child_count, sizeof (int)); - sh->xattr = CALLOC (priv->child_count, sizeof (dict_t *)); - sh->sources = CALLOC (sizeof (*sh->sources), priv->child_count); - - sh->pending_matrix = CALLOC (sizeof (int32_t *), priv->child_count); - for (i = 0; i < priv->child_count; i++) { - sh->pending_matrix[i] = CALLOC (sizeof (int32_t), - priv->child_count); - } +is_self_heal_failed (afr_self_heal_t *sh, afr_sh_fail_check_type type) +{ + afr_sh_status_for_all_type sh_status = sh->afr_all_sh_status; + afr_self_heal_type sh_type_in_action = AFR_SELF_HEAL_INVALID; + afr_self_heal_status status = AFR_SELF_HEAL_FAILED; + xlator_t *this = NULL; + int sh_failed = 0; + + this = THIS; + + if (!sh) { + gf_log_callingfn (this->name, GF_LOG_ERROR, "Null self heal " + "structure"); + sh_failed = 1; + goto out; + } - sh->delta_matrix = CALLOC (sizeof (int32_t *), priv->child_count); - for (i = 0; i < priv->child_count; i++) { - sh->delta_matrix[i] = CALLOC (sizeof (int32_t), - priv->child_count); - } + if (type == AFR_CHECK_ALL) { + if ((sh_status.gfid_or_missing_entry_self_heal == AFR_SELF_HEAL_FAILED) + || (sh_status.metadata_self_heal == AFR_SELF_HEAL_FAILED) + || (sh_status.data_self_heal == AFR_SELF_HEAL_FAILED) + || (sh_status.entry_self_heal == AFR_SELF_HEAL_FAILED)) + sh_failed = 1; + } else if (type == AFR_CHECK_SPECIFIC) { + sh_type_in_action = sh->sh_type_in_action; + switch (sh_type_in_action) { + case AFR_SELF_HEAL_GFID_OR_MISSING_ENTRY: + status = sh_status.gfid_or_missing_entry_self_heal; + break; + case AFR_SELF_HEAL_METADATA: + status = sh_status.metadata_self_heal; + break; + case AFR_SELF_HEAL_ENTRY: + status = sh_status.entry_self_heal; + break; + case AFR_SELF_HEAL_DATA: + status = sh_status.data_self_heal; + break; + case AFR_SELF_HEAL_INVALID: + status = AFR_SELF_HEAL_NOT_ATTEMPTED; + break; + } + if (status == AFR_SELF_HEAL_FAILED) + sh_failed = 1; - if (local->success_count && local->enoent_count) { - afr_self_heal_missing_entries (frame, this); - } else { - gf_log (this->name, GF_LOG_TRACE, - "proceeding to metadata check on %s", - local->loc.path); - afr_sh_missing_entries_done (frame, this); - } + } - return 0; +out: + return sh_failed; +} + +char * +get_sh_completion_status (afr_self_heal_status status) +{ + + char *not_attempted = " is not attempted"; + char *failed = " failed"; + char *started = " is started"; + char *sync_begin = " is successfully completed"; + char *result = " has unknown status"; + + switch (status) + { + case AFR_SELF_HEAL_NOT_ATTEMPTED: + result = not_attempted; + break; + case AFR_SELF_HEAL_FAILED: + result = failed; + break; + case AFR_SELF_HEAL_STARTED: + result = started; + break; + case AFR_SELF_HEAL_SYNC_BEGIN: + result = sync_begin; + break; + } + + return result; + +} + +void +afr_log_self_heal_completion_status (afr_local_t *local, gf_loglevel_t loglvl) +{ + + char sh_log[4096] = {0}; + afr_self_heal_t *sh = &local->self_heal; + afr_sh_status_for_all_type all_status = sh->afr_all_sh_status; + xlator_t *this = NULL; + size_t off = 0; + int data_sh = 0; + int metadata_sh = 0; + int print_log = 0; + + this = THIS; + + ADD_FMT_STRING (sh_log, off, "gfid or missing entry", + all_status.gfid_or_missing_entry_self_heal, print_log); + ADD_FMT_STRING_SYNC (sh_log, off, "metadata", + all_status.metadata_self_heal, print_log); + if (sh->background) { + ADD_FMT_STRING_SYNC (sh_log, off, "backgroung data", + all_status.data_self_heal, print_log); + } else { + ADD_FMT_STRING_SYNC (sh_log, off, "foreground data", + all_status.data_self_heal, print_log); + } + ADD_FMT_STRING_SYNC (sh_log, off, "entry", all_status.entry_self_heal, + print_log); + + if (AFR_SELF_HEAL_SYNC_BEGIN == all_status.data_self_heal && + strcmp (sh->data_sh_info, "") && sh->data_sh_info ) + data_sh = 1; + if (AFR_SELF_HEAL_SYNC_BEGIN == all_status.metadata_self_heal && + strcmp (sh->metadata_sh_info, "") && sh->metadata_sh_info) + metadata_sh = 1; + + if (!print_log) + return; + + gf_log (this->name, loglvl, "%s %s %s on %s", sh_log, + ((data_sh == 1) ? sh->data_sh_info : ""), + ((metadata_sh == 1) ? sh->metadata_sh_info : ""), + local->loc.path); } diff --git a/xlators/cluster/afr/src/afr-self-heal-common.h b/xlators/cluster/afr/src/afr-self-heal-common.h index a311cdf5e..473264776 100644 --- a/xlators/cluster/afr/src/afr-self-heal-common.h +++ b/xlators/cluster/afr/src/afr-self-heal-common.h @@ -1,70 +1,144 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> This file is part of GlusterFS. - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef __AFR_SELF_HEAL_COMMON_H__ #define __AFR_SELF_HEAL_COMMON_H__ -#define FILE_HAS_HOLES(buf) (((buf)->st_size) > ((buf)->st_blocks * 512)) +#define FILE_HAS_HOLES(buf) (((buf)->ia_size) > ((buf)->ia_blocks * 512)) +#define AFR_SH_MIN_PARTICIPANTS 2 typedef enum { - AFR_SELF_HEAL_ENTRY, - AFR_SELF_HEAL_METADATA, - AFR_SELF_HEAL_DATA, -} afr_self_heal_type; + AFR_LOOKUP_FAIL_CONFLICTS = 1, + AFR_LOOKUP_FAIL_MISSING_GFIDS = 2, +} afr_lookup_flags_t; int afr_sh_select_source (int sources[], int child_count); int -afr_sh_sink_count (int sources[], int child_count); - -int afr_sh_source_count (int sources[], int child_count); -int -afr_sh_supress_errenous_children (int sources[], int child_errno[], - int child_count); - void afr_sh_print_pending_matrix (int32_t *pending_matrix[], xlator_t *this); void -afr_sh_build_pending_matrix (afr_private_t *priv, - int32_t *pending_matrix[], dict_t *xattr[], - int child_count, afr_transaction_type type); +afr_sh_print_split_brain_log (int32_t *pending_matrix[], xlator_t *this, + const char *loc); + +int +afr_build_pending_matrix (char **pending_key, int32_t **pending_matrix, + unsigned char *ignorant_subvols, + dict_t *xattr[], afr_transaction_type type, + size_t child_count); void afr_sh_pending_to_delta (afr_private_t *priv, dict_t **xattr, - int32_t *delta_matrix[], int success[], + int32_t *delta_matrix[], unsigned char success[], int child_count, afr_transaction_type type); int -afr_sh_mark_sources (afr_self_heal_t *sh, int child_count, - afr_self_heal_type type); +afr_mark_sources (xlator_t *this, int32_t *sources, int32_t **pending_matrix, + struct iatt *bufs, afr_self_heal_type type, + int32_t *success_children, int32_t *subvol_status); int -afr_sh_delta_to_xattr (afr_private_t *priv, +afr_sh_delta_to_xattr (xlator_t *this, int32_t *delta_matrix[], dict_t *xattr[], int child_count, afr_transaction_type type); +void +afr_self_heal_type_str_get (afr_self_heal_t *self_heal_p, char *str, + size_t size); + +afr_self_heal_type +afr_self_heal_type_for_transaction (afr_transaction_type type); + int -afr_sh_is_matrix_zero (int32_t *pending_matrix[], int child_count); +afr_build_sources (xlator_t *this, dict_t **xattr, struct iatt *bufs, + int32_t **pending_matrix, int32_t *sources, + int32_t *success_children, afr_transaction_type type, + int32_t *subvol_status, gf_boolean_t ignore_ignorant); +void +afr_sh_common_reset (afr_self_heal_t *sh, unsigned int child_count); +void +afr_sh_common_lookup_resp_handler (call_frame_t *frame, void *cookie, + xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *buf, + dict_t *xattr, struct iatt *postparent, + loc_t *loc); + +int +afr_sh_common_lookup (call_frame_t *frame, xlator_t *this, loc_t *loc, + afr_lookup_done_cbk_t lookup_cbk, uuid_t uuid, + int32_t flags, dict_t *xdata); +int +afr_sh_entry_expunge_remove (call_frame_t *expunge_frame, xlator_t *this, + int active_src, struct iatt *buf, + struct iatt *parentbuf); +int +afr_sh_entrylk (call_frame_t *frame, xlator_t *this, loc_t *loc, + char *base_name, afr_lock_cbk_t lock_cbk); +int +afr_sh_entry_impunge_create (call_frame_t *impunge_frame, xlator_t *this, + int child_index); +int +afr_sh_data_unlock (call_frame_t *frame, xlator_t *this, char *dom, + afr_lock_cbk_t lock_cbk); +afr_local_t * +afr_self_heal_local_init (afr_local_t *l, xlator_t *this); +int +afr_sh_data_lock (call_frame_t *frame, xlator_t *this, + off_t start, off_t len, gf_boolean_t block, char *dom, + afr_lock_cbk_t success_handler, + afr_lock_cbk_t failure_handler); +void +afr_sh_set_error (afr_self_heal_t *sh, int32_t op_errno); +void +afr_sh_mark_source_sinks (call_frame_t *frame, xlator_t *this); +typedef int +(*afr_fxattrop_cbk_t) (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *xattr, dict_t *xdata); +int +afr_build_child_loc (xlator_t *this, loc_t *child, loc_t *parent, char *name); +int +afr_impunge_frame_create (call_frame_t *frame, xlator_t *this, + int active_source, call_frame_t **impunge_frame); +void +afr_sh_reset (call_frame_t *frame, xlator_t *this); + +void +afr_children_intersection_get (int32_t *set1, int32_t *set2, + int *intersection, unsigned int child_count); +int +afr_get_no_xattr_dir_read_child (xlator_t *this, int32_t *success_children, + struct iatt *bufs); +int +afr_sh_erase_pending (call_frame_t *frame, xlator_t *this, + afr_transaction_type type, afr_fxattrop_cbk_t cbk, + int (*finish)(call_frame_t *frame, xlator_t *this)); + +void +afr_set_local_for_unhealable (afr_local_t *local); + +int +is_self_heal_failed (afr_self_heal_t *sh, afr_sh_fail_check_type type); + +void +afr_set_self_heal_status (afr_self_heal_t *sh, afr_self_heal_status status); + +void +afr_log_self_heal_completion_status (afr_local_t *local, gf_loglevel_t logl); +char* +afr_get_pending_matrix_str (int32_t *pending_matrix[], xlator_t *this); #endif /* __AFR_SELF_HEAL_COMMON_H__ */ diff --git a/xlators/cluster/afr/src/afr-self-heal-data.c b/xlators/cluster/afr/src/afr-self-heal-data.c index 2b22727fa..9de26ee56 100644 --- a/xlators/cluster/afr/src/afr-self-heal-data.c +++ b/xlators/cluster/afr/src/afr-self-heal-data.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #include <libgen.h> @@ -47,999 +38,1717 @@ #include "afr-transaction.h" #include "afr-self-heal.h" #include "afr-self-heal-common.h" +#include "afr-self-heal-algorithm.h" + +int +afr_sh_data_fail (call_frame_t *frame, xlator_t *this); +static inline gf_boolean_t +afr_sh_data_proceed (unsigned int success_count) +{ + return (success_count >= AFR_SH_MIN_PARTICIPANTS); +} +extern int +sh_loop_finish (call_frame_t *loop_frame, xlator_t *this); int -afr_sh_data_done (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; +afr_post_sh_big_lock_success (call_frame_t *frame, xlator_t *this); - local = frame->local; - sh = &local->self_heal; - priv = this->private; +int +afr_post_sh_big_lock_failure (call_frame_t *frame, xlator_t *this); - /* - TODO: cleanup sh->* - */ +int +afr_sh_data_finish (call_frame_t *frame, xlator_t *this); - gf_log (this->name, GF_LOG_TRACE, - "self heal of %s completed", - local->loc.path); +int +afr_sh_data_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - sh->completion_cbk (frame, this); + local = frame->local; + sh = &local->self_heal; - return 0; + sh->completion_cbk (frame, this); + + return 0; } int afr_sh_data_flush_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) + int32_t op_ret, int32_t op_errno, dict_t *xdata) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - afr_self_heal_t *sh = NULL; - int call_count = 0; - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - LOCK (&frame->lock); - { - } - UNLOCK (&frame->lock); + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = 0; + int child_index = (long) cookie; + + local = frame->local; + priv = this->private; + + LOCK (&frame->lock); + { + if (op_ret == -1) { + gf_log (this->name, GF_LOG_ERROR, + "flush failed on %s on subvolume %s: %s", + local->loc.path, priv->children[child_index]->name, + strerror (op_errno)); + } + } + UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + call_count = afr_frame_return (frame); - if (call_count == 0) { - fd_unref (sh->healing_fd); - sh->healing_fd = NULL; - afr_sh_data_done (frame, this); - } + if (call_count == 0) { + afr_sh_data_done (frame, this); + } - return 0; + return 0; } - int afr_sh_data_close (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - afr_self_heal_t *sh = NULL; - int i = 0; - int call_count = 0; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - if (!sh->healing_fd) { - afr_sh_data_done (frame, this); - return 0; - } - - call_count = sh->active_sinks + 1; - local->call_count = call_count; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + int i = 0; + int call_count = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + if (!sh->healing_fd) { + //This happens when file is non-reg + afr_sh_data_done (frame, this); + return 0; + } + call_count = afr_set_elem_count_get (sh->success, + priv->child_count); + local->call_count = call_count; + if (call_count == 0) { + afr_sh_data_done (frame, this); + return 0; + } - /* closed source */ - gf_log (this->name, GF_LOG_TRACE, - "closing fd of %s on %s", - local->loc.path, priv->children[sh->source]->name); + for (i = 0; i < priv->child_count; i++) { + if (!sh->success[i]) + continue; + gf_log (this->name, GF_LOG_DEBUG, + "closing fd of %s on %s", + local->loc.path, priv->children[i]->name); - STACK_WIND_COOKIE (frame, afr_sh_data_flush_cbk, - (void *) (long) sh->source, - priv->children[sh->source], - priv->children[sh->source]->fops->flush, - sh->healing_fd); - call_count--; + STACK_WIND_COOKIE (frame, afr_sh_data_flush_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->flush, + sh->healing_fd, NULL); - for (i = 0; i < priv->child_count; i++) { - if (sh->sources[i] || !local->child_up[i]) - continue; - - gf_log (this->name, GF_LOG_TRACE, - "closing fd of %s on %s", - local->loc.path, priv->children[i]->name); - - STACK_WIND_COOKIE (frame, afr_sh_data_flush_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->flush, - sh->healing_fd); - if (!--call_count) - break; - } + if (!--call_count) + break; + } - return 0; + return 0; } +int +afr_sh_dom_unlock (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + if (sh->sh_dom_lock_held) + afr_sh_data_unlock (frame, this, priv->sh_domain, + afr_sh_data_close); + else + afr_sh_data_close (frame, this); + return 0; +} int -afr_sh_data_unlck_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) +afr_sh_data_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *statpre, + struct iatt *statpost, dict_t *xdata) { - afr_local_t * local = NULL; - int call_count = 0; - int child_index = (long) cookie; - - - local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "locking inode of %s on child %d failed: %s", - local->loc.path, child_index, - strerror (op_errno)); - } else { - gf_log (this->name, GF_LOG_TRACE, - "inode of %s on child %d locked", - local->loc.path, child_index); - } - } - UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = 0; + int child_index = (long) cookie; + + local = frame->local; + priv = this->private; + + LOCK (&frame->lock); + { + if (op_ret == -1) { + gf_log (this->name, GF_LOG_INFO, + "setattr failed on %s on subvolume %s: %s", + local->loc.path, priv->children[child_index]->name, + strerror (op_errno)); + } + } + UNLOCK (&frame->lock); - if (call_count == 0) { - afr_sh_data_close (frame, this); - } + call_count = afr_frame_return (frame); - return 0; -} + if (call_count == 0) { + afr_sh_data_finish (frame, this); + } + return 0; +} int -afr_sh_data_unlock (call_frame_t *frame, xlator_t *this) +afr_sh_data_setattr (call_frame_t *frame, xlator_t *this, struct iatt* stbuf) { - struct flock flock; - int i = 0; - int call_count = 0; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + int i = 0; + int call_count = 0; + int32_t valid = 0; - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - afr_self_heal_t * sh = NULL; + local = frame->local; + sh = &local->self_heal; + priv = this->private; + valid = (GF_SET_ATTR_ATIME | GF_SET_ATTR_MTIME); - local = frame->local; - sh = &local->self_heal; - priv = this->private; + call_count = afr_set_elem_count_get (sh->success, + priv->child_count); + local->call_count = call_count; - call_count = local->child_count; + if (call_count == 0) { + GF_ASSERT (0); + afr_sh_data_finish (frame, this); + return 0; + } - local->call_count = call_count; + for (i = 0; i < priv->child_count; i++) { + if (!sh->success[i]) + continue; - flock.l_start = 0; - flock.l_len = 0; - flock.l_type = F_UNLCK; + STACK_WIND_COOKIE (frame, afr_sh_data_setattr_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->setattr, + &local->loc, stbuf, valid, NULL); - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - gf_log (this->name, GF_LOG_TRACE, - "unlocking %s on subvolume %s", - local->loc.path, priv->children[i]->name); - - STACK_WIND_COOKIE (frame, afr_sh_data_unlck_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->inodelk, - this->name, - &local->loc, F_SETLK, &flock); - if (!--call_count) - break; - } - } + if (!--call_count) + break; + } - return 0; + return 0; } +int +afr_sh_data_setattr_fstat_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + struct iatt *buf, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int child_index = (long) cookie; + + local = frame->local; + sh = &local->self_heal; + + GF_ASSERT (sh->source == child_index); + if (op_ret != -1) { + sh->buf[child_index] = *buf; + afr_sh_data_setattr (frame, this, buf); + } else { + gf_log (this->name, GF_LOG_ERROR, "%s: Failed to set " + "time-stamps after self-heal", local->loc.path); + afr_sh_data_fail (frame, this); + } + + return 0; +} + +/* + * If there are any writes after the self-heal is triggered then the + * stbuf stored in local->self_heal.buf[] will be invalid so we do one more + * stat on the source and then set the [am]times + */ +int +afr_sh_set_timestamps (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + STACK_WIND_COOKIE (frame, afr_sh_data_setattr_fstat_cbk, + (void *) (long) sh->source, + priv->children[sh->source], + priv->children[sh->source]->fops->fstat, + sh->healing_fd, NULL); + return 0; +} + +//Fun fact, lock_cbk is being used for both lock & unlock +int +afr_sh_data_unlock (call_frame_t *frame, xlator_t *this, char *dom, + afr_lock_cbk_t lock_cbk) +{ + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int ret = 0; + + local = frame->local; + int_lock = &local->internal_lock; + sh = &local->self_heal; + priv = this->private; + + if (strcmp (dom, this->name) == 0) { + sh->data_lock_held = _gf_false; + } else if (strcmp (dom, priv->sh_domain) == 0) { + sh->sh_dom_lock_held = _gf_false; + } else { + ret = -1; + goto out; + } + int_lock->lock_cbk = lock_cbk; + int_lock->domain = dom; + afr_unlock (frame, this); + +out: + if (ret) { + int_lock->lock_op_ret = -1; + int_lock->lock_cbk (frame, this); + } + return 0; +} int afr_sh_data_finish (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - local = frame->local; + local = frame->local; + sh = &local->self_heal; - gf_log (this->name, GF_LOG_TRACE, - "finishing data selfheal of %s", local->loc.path); + gf_log (this->name, GF_LOG_DEBUG, + "finishing data selfheal of %s", local->loc.path); - afr_sh_data_unlock (frame, this); + if (sh->data_lock_held) + afr_sh_data_unlock (frame, this, this->name, afr_sh_dom_unlock); + else + afr_sh_dom_unlock (frame, this); - return 0; + return 0; } +int +afr_sh_data_fail (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + + gf_log (this->name, GF_LOG_DEBUG, + "finishing failed data selfheal of %s", local->loc.path); + + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_data_finish (frame, this); + return 0; +} int afr_sh_data_erase_pending_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, - int32_t op_errno, dict_t *xattr) + xlator_t *this, int32_t op_ret, + int32_t op_errno, dict_t *xattr, dict_t *xdata) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; + int call_count = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int32_t child_index = (long) cookie; + + priv = this->private; + local = frame->local; + sh = &local->self_heal; + if (op_ret < 0) { + gf_log (this->name, GF_LOG_ERROR, "Erasing of pending change " + "log failed on %s for subvol %s, reason: %s", + local->loc.path, priv->children[child_index]->name, + strerror (op_errno)); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } - local = frame->local; - sh = &local->self_heal; - priv = this->private; + call_count = afr_frame_return (frame); - LOCK (&frame->lock); - { - } - UNLOCK (&frame->lock); + if (call_count == 0) { + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + if (sh->old_loop_frame) + sh_loop_finish (sh->old_loop_frame, this); + sh->old_loop_frame = NULL; + afr_sh_data_fail (frame, this); + goto out; + } + if (!IA_ISREG (sh->type)) { + afr_sh_data_finish (frame, this); + goto out; + } + GF_ASSERT (sh->old_loop_frame); + afr_sh_data_lock (frame, this, 0, 0, _gf_true, this->name, + afr_post_sh_big_lock_success, + afr_post_sh_big_lock_failure); + } +out: + return 0; +} - call_count = afr_frame_return (frame); +int +afr_sh_data_erase_pending (call_frame_t *frame, xlator_t *this) +{ + afr_sh_erase_pending (frame, this, AFR_DATA_TRANSACTION, + afr_sh_data_erase_pending_cbk, + afr_sh_data_finish); + return 0; +} - if (call_count == 0) - afr_sh_data_finish (frame, this); +int +afr_sh_data_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *pre, + struct iatt *post, dict_t *xdata) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + int call_count = 0; + int child_index = (long) cookie; + + local = frame->local; + priv = this->private; + sh = &local->self_heal; + + if (op_ret < 0) { + gf_log (this->name, GF_LOG_ERROR, "%s: Failed to fsync on " + "%s - %s", local->loc.path, + priv->children[child_index]->name, strerror (op_errno)); + LOCK (&frame->lock); + { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } + UNLOCK (&frame->lock); + if (sh->old_loop_frame) + sh_loop_finish (sh->old_loop_frame, this); + sh->old_loop_frame = NULL; + } - return 0; + call_count = afr_frame_return (frame); + if (call_count == 0) { + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) + afr_sh_data_fail (frame, this); + else + afr_sh_data_erase_pending (frame, this); + } + return 0; } - +/* + * Before erasing xattrs, make sure the data is written to disk + */ int -afr_sh_data_erase_pending (call_frame_t *frame, xlator_t *this) +afr_sh_data_fsync (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; - int i = 0; - dict_t **erase_xattr = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + int i = 0; + int call_count = 0; + + local = frame->local; + priv = this->private; + sh = &local->self_heal; + + call_count = sh->active_sinks; + if (call_count == 0) { + afr_sh_data_erase_pending (frame, this); + return 0; + } + local->call_count = call_count; + for (i = 0; i < priv->child_count; i++) { + if (!sh->success[i] || sh->sources[i]) + continue; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + STACK_WIND_COOKIE (frame, afr_sh_data_fsync_cbk, + (void *) (long) i, priv->children[i], + priv->children[i]->fops->fsync, + sh->healing_fd, 1, NULL); + } - afr_sh_pending_to_delta (priv, sh->xattr, sh->delta_matrix, sh->success, - priv->child_count, AFR_DATA_TRANSACTION); + return 0; +} - erase_xattr = CALLOC (sizeof (*erase_xattr), priv->child_count); +static struct afr_sh_algorithm * +sh_algo_from_name (xlator_t *this, char *name) +{ + int i = 0; - for (i = 0; i < priv->child_count; i++) { - if (sh->xattr[i]) { - call_count++; + if (name == NULL) + goto out; - erase_xattr[i] = get_new_dict(); - dict_ref (erase_xattr[i]); - } - } + while (afr_self_heal_algorithms[i].name) { + if (!strcmp (name, afr_self_heal_algorithms[i].name)) { + return &afr_self_heal_algorithms[i]; + } - afr_sh_delta_to_xattr (priv, sh->delta_matrix, erase_xattr, - priv->child_count, AFR_DATA_TRANSACTION); + i++; + } - local->call_count = call_count; - for (i = 0; i < priv->child_count; i++) { - if (!erase_xattr[i]) - continue; - - gf_log (this->name, GF_LOG_TRACE, - "erasing pending flags from %s on %s", - local->loc.path, priv->children[i]->name); - - STACK_WIND_COOKIE (frame, afr_sh_data_erase_pending_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->xattrop, - &local->loc, - GF_XATTROP_ADD_ARRAY, erase_xattr[i]); - if (!--call_count) - break; - } +out: + return NULL; +} - for (i = 0; i < priv->child_count; i++) { - if (erase_xattr[i]) { - dict_unref (erase_xattr[i]); - } - } - FREE (erase_xattr); - return 0; +static int +sh_zero_byte_files_exist (afr_local_t *local, int child_count) +{ + int i = 0; + int ret = 0; + afr_self_heal_t *sh = NULL; + + sh = &local->self_heal; + for (i = 0; i < child_count; i++) { + if (!local->child_up[i] || sh->child_errno[i]) + continue; + if (sh->buf[i].ia_size == 0) { + ret = 1; + break; + } + } + + return ret; +} + + +struct afr_sh_algorithm * +afr_sh_data_pick_algo (call_frame_t *frame, xlator_t *this) +{ + afr_private_t * priv = NULL; + struct afr_sh_algorithm * algo = NULL; + afr_local_t * local = NULL; + afr_self_heal_t * sh = NULL; + + priv = this->private; + local = frame->local; + sh = &local->self_heal; + algo = sh_algo_from_name (this, priv->data_self_heal_algorithm); + + if (algo == NULL) { + /* option not set, so fall back on heuristics */ + + if (sh_zero_byte_files_exist (local, priv->child_count) + || (sh->file_size <= (priv->data_self_heal_window_size * + this->ctx->page_size))) { + + /* + * If the file does not exist on one of the subvolumes, + * or a zero-byte file exists (created by entry self-heal) + * the entire content has to be copied anyway, so there + * is no benefit from using the "diff" algorithm. + * + * If the file size is about the same as page size, + * the entire file can be read and written with a few + * (pipelined) STACK_WINDs, which will be faster + * than "diff" which has to read checksums and then + * read and write. + */ + + algo = sh_algo_from_name (this, "full"); + + } else { + algo = sh_algo_from_name (this, "diff"); + } + } + + return algo; } int +afr_sh_data_sync_prepare (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + struct afr_sh_algorithm *sh_algo = NULL; + + local = frame->local; + sh = &local->self_heal; + + sh->algo_completion_cbk = afr_sh_data_fsync; + sh->algo_abort_cbk = afr_sh_data_fail; + + sh_algo = afr_sh_data_pick_algo (frame, this); + + sh->algo = sh_algo; + sh_algo->fn (frame, this); + + return 0; +} + +int afr_sh_data_trim_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - afr_self_heal_t *sh = NULL; - int call_count = 0; - int child_index = 0; - - priv = this->private; - local = frame->local; - sh = &local->self_heal; - - child_index = (long) cookie; - - LOCK (&frame->lock); - { - if (op_ret == -1) - gf_log (this->name, GF_LOG_DEBUG, - "ftruncate of %s on subvolume %s failed (%s)", - local->loc.path, - priv->children[child_index]->name, - strerror (op_errno)); - else - gf_log (this->name, GF_LOG_TRACE, - "ftruncate of %s on subvolume %s completed", - local->loc.path, - priv->children[child_index]->name); - } - UNLOCK (&frame->lock); + int call_count = 0; + int child_index = 0; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + priv = this->private; + local = frame->local; + sh = &local->self_heal; + + child_index = (long) cookie; + + LOCK (&frame->lock); + { + if (op_ret == -1) { + gf_log (this->name, GF_LOG_ERROR, + "ftruncate of %s on subvolume %s failed (%s)", + local->loc.path, + priv->children[child_index]->name, + strerror (op_errno)); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } else { + gf_log (this->name, GF_LOG_DEBUG, + "ftruncate of %s on subvolume %s completed", + local->loc.path, + priv->children[child_index]->name); + } + } + UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + call_count = afr_frame_return (frame); - if (call_count == 0) { - afr_sh_data_erase_pending (frame, this); - } + if (call_count == 0) { + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) + afr_sh_data_fail (frame, this); + else + afr_sh_data_sync_prepare (frame, this); + } - return 0; + return 0; } int afr_sh_data_trim_sinks (call_frame_t *frame, xlator_t *this) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - afr_self_heal_t *sh = NULL; - int *sources = NULL; - int call_count = 0; - int i = 0; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + afr_self_heal_t *sh = NULL; + int *sources = NULL; + int call_count = 0; + int i = 0; - priv = this->private; - local = frame->local; - sh = &local->self_heal; + priv = this->private; + local = frame->local; + sh = &local->self_heal; - sources = sh->sources; - call_count = sh->active_sinks; + sources = sh->sources; + call_count = sh->active_sinks; - local->call_count = call_count; + local->call_count = call_count; - for (i = 0; i < priv->child_count; i++) { - if (sources[i] || !local->child_up[i]) - continue; + for (i = 0; i < priv->child_count; i++) { + if (sources[i] || !local->child_up[i]) + continue; - STACK_WIND_COOKIE (frame, afr_sh_data_trim_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->ftruncate, - sh->healing_fd, sh->file_size); + STACK_WIND_COOKIE (frame, afr_sh_data_trim_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->ftruncate, + sh->healing_fd, sh->file_size, + NULL); - if (!--call_count) - break; - } + if (!--call_count) + break; + } - return 0; + return 0; } - -int -afr_sh_data_read_write_iter (call_frame_t *frame, xlator_t *this); - int -afr_sh_data_write_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) +afr_sh_inode_set_read_ctx (afr_self_heal_t *sh, xlator_t *this) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - afr_self_heal_t *sh = NULL; - - int child_index = (long) cookie; - int call_count = 0; - - priv = this->private; - local = frame->local; - sh = &local->self_heal; - - gf_log (this->name, GF_LOG_TRACE, - "wrote %d bytes of data from %s to child %d, offset %"PRId64"", - op_ret, local->loc.path, child_index, sh->offset - op_ret); - - LOCK (&frame->lock); - { - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "write to %s failed on subvolume %s (%s)", - local->loc.path, - priv->children[child_index]->name, - strerror (op_errno)); - sh->op_failed = 1; - } - } - UNLOCK (&frame->lock); + afr_private_t *priv = NULL; + int ret = 0; + int i = 0; + + priv = this->private; + sh->source = afr_sh_select_source (sh->sources, priv->child_count); + if (sh->source < 0) { + ret = -1; + goto out; + } - call_count = afr_frame_return (frame); + /* detect changes not visible through pending flags -- JIC */ + for (i = 0; i < priv->child_count; i++) { + if (i == sh->source || sh->child_errno[i]) + continue; - if (call_count == 0) { - afr_sh_data_read_write_iter (frame, this); - } + if (SIZE_DIFFERS (&sh->buf[i], &sh->buf[sh->source])) + sh->sources[i] = 0; + } - return 0; + afr_reset_children (sh->fresh_children, priv->child_count); + afr_get_fresh_children (sh->success_children, sh->sources, + sh->fresh_children, priv->child_count); + afr_inode_set_read_ctx (this, sh->inode, sh->source, + sh->fresh_children); +out: + return ret; } - -int -afr_sh_data_read_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - struct iovec *vector, int32_t count, struct stat *buf, - struct iobref *iobref) +char* +afr_get_sizes_str (afr_local_t *local, struct iatt *bufs, xlator_t *this) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int i = 0; + char num[1024] = {0}; + size_t len = 0; + char *sizes_str = NULL; + size_t off = 0; + char *fmt_str = "%llu bytes on %s, "; + char *child_down = " %s,"; + char *child_unknown = " %s,"; + int down_child_present = 0; + int down_count = 0; + int unknown_count = 0; + int unknown_child_present = 0; + char *down_subvol_1 = " down subvolume is "; + char *unknown_subvol_1 = " unknown subvolume is "; + char *down_subvol_2 = " down subvolumes are "; + char *unknown_subvol_2 = " unknown subvolumes are "; + + priv = this->private; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i] == 1) { + len += snprintf (num, sizeof (num), fmt_str, + (unsigned long long) bufs[i].ia_size, + priv->children[i]->name); + } else if (local->child_up[i] == 0) { + len += snprintf (num, sizeof (num), child_down, + priv->children[i]->name); + if (!down_child_present) + down_child_present = 1; + down_count ++; + } else if (local->child_up[i] == -1) { + len += snprintf (num, sizeof (num), child_unknown, + priv->children[i]->name); + if (!unknown_child_present) + unknown_child_present = 1; + unknown_count++; + } - int child_index = (long) cookie; - int i = 0; - int call_count = 0; + } - off_t offset; + if (down_child_present) { + if (down_count > 1) + len += snprintf (num, sizeof (num), "%s", + down_subvol_2); + else + len += snprintf (num, sizeof (num), "%s", + down_subvol_1); + } + if (unknown_child_present) { + if (unknown_count > 1) + len += snprintf (num, sizeof (num), "%s", + unknown_subvol_2); + else + len += snprintf (num, sizeof (num), "%s", + unknown_subvol_1); + } - priv = this->private; - local = frame->local; - sh = &local->self_heal; + len++;//for '\0' - call_count = sh->active_sinks; + sizes_str = GF_CALLOC (len, sizeof (char), gf_common_mt_char); - local->call_count = call_count; + if (!sizes_str) + return NULL; - gf_log (this->name, GF_LOG_TRACE, - "read %d bytes of data from %s on child %d, offset %"PRId64"", - op_ret, local->loc.path, child_index, sh->offset); + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i] == 1) { + off += snprintf (sizes_str + off, len - off, fmt_str, + (unsigned long long) bufs[i].ia_size, + priv->children[i]->name); + } + } - if (op_ret <= 0) { - afr_sh_data_trim_sinks (frame, this); - return 0; - } + if (down_child_present) { + if (down_count > 1) { + off += snprintf (sizes_str + off, len - off, "%s", + down_subvol_2); + } else { + off += snprintf (sizes_str + off, len - off, "%s", + down_subvol_1); + } + } - /* what if we read less than block size? */ - offset = sh->offset; - sh->offset += op_ret; - - if (sh->file_has_holes) { - if (iov_0filled (vector, count) == 0) { - /* the iter function depends on the - sh->offset already being updated - above - */ - afr_sh_data_read_write_iter (frame, this); - goto out; - } - } + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i] == 0) { + off += snprintf (sizes_str + off, len - off, child_down, + priv->children[i]->name); + } + } - for (i = 0; i < priv->child_count; i++) { - if (sh->sources[i] || !local->child_up[i]) - continue; - - /* this is a sink, so write to it */ - STACK_WIND_COOKIE (frame, afr_sh_data_write_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->writev, - sh->healing_fd, vector, count, offset, - iobref); - - if (!--call_count) - break; - } + if (unknown_child_present) { + if (unknown_count > 1) { + off += snprintf (sizes_str + off, len - off, "%s", + unknown_subvol_2); + } else { + off += snprintf (sizes_str + off, len - off, "%s", + unknown_subvol_1); + } + } -out: - return 0; -} + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i] == -1) { + off += snprintf (sizes_str + off, len - off, + child_unknown, + priv->children[i]->name); + } + } -int -afr_sh_data_read_write (call_frame_t *frame, xlator_t *this) -{ - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - afr_self_heal_t *sh = NULL; - - priv = this->private; - local = frame->local; - sh = &local->self_heal; - - STACK_WIND_COOKIE (frame, afr_sh_data_read_cbk, - (void *) (long) sh->source, - priv->children[sh->source], - priv->children[sh->source]->fops->readv, - sh->healing_fd, sh->block_size, - sh->offset); - - return 0; + return sizes_str; } - -int -afr_sh_data_read_write_iter (call_frame_t *frame, xlator_t *this) +char* +afr_get_sinks_str (xlator_t *this, afr_local_t *local, afr_self_heal_t *sh) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int i = 0; + char num[1024] = {0}; + size_t len = 0; + char *sinks_str = NULL; + char *temp_str = " to sinks "; + char *str_format = " %s,"; + char off = 0; + + priv = this->private; + + len += snprintf (num, sizeof (num), "%s", temp_str); + for (i = 0; i < priv->child_count; i++) { + if ((sh->sources[i] == 0) && (local->child_up[i] == 1)) { + len += snprintf (num, sizeof (num), str_format, + priv->children[i]->name); + } + } - priv = this->private; - local = frame->local; - sh = &local->self_heal; + len ++; - if (sh->op_failed) { - afr_sh_data_finish (frame, this); - goto out; - } + sinks_str = GF_CALLOC (len, sizeof (char), gf_common_mt_char); - if (sh->offset >= sh->file_size) { - gf_log (this->name, GF_LOG_TRACE, - "closing fd's of %s", - local->loc.path); - afr_sh_data_trim_sinks (frame, this); + if (!sinks_str) + return NULL; - goto out; - } + off += snprintf (sinks_str + off, len - off, "%s", temp_str); + + for (i = 0; i < priv->child_count; i++) { + if ((sh->sources[i] == 0) && (local->child_up[i] == 1)) { + off += snprintf (sinks_str + off, len - off, + str_format, + priv->children[i]->name); + } + } - afr_sh_data_read_write (frame, this); + return sinks_str; -out: - return 0; } -int -afr_sh_data_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, fd_t *fd) +void +afr_set_data_sh_info_str (afr_local_t *local, afr_self_heal_t *sh, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; - int child_index = 0; - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - child_index = (long) cookie; - - /* TODO: some of the open's might fail. - In that case, modify cleanup fn to send flush on those - fd's which are already open */ - - LOCK (&frame->lock); - { - if (op_ret == -1) { - gf_log (this->name, GF_LOG_TRACE, - "open of %s failed on child %s (%s)", - local->loc.path, - priv->children[child_index]->name, - strerror (op_errno)); - sh->op_failed = 1; - } + char *pending_matrix_str = NULL; + char *sizes_str = NULL; + char *sinks_str = NULL; + afr_private_t *priv = NULL; - } - UNLOCK (&frame->lock); + priv = this->private; - call_count = afr_frame_return (frame); + pending_matrix_str = afr_get_pending_matrix_str (sh->pending_matrix, + this); + if (!pending_matrix_str) + pending_matrix_str = ""; - if (call_count == 0) { - if (sh->op_failed) { - afr_sh_data_finish (frame, this); - return 0; - } - gf_log (this->name, GF_LOG_TRACE, - "fd for %s opened, commencing sync", - local->loc.path); + sizes_str = afr_get_sizes_str (local, sh->buf, this); + if (!sizes_str) + sizes_str = ""; - gf_log (this->name, GF_LOG_TRACE, - "sourcing file %s from %s to other sinks", - local->loc.path, priv->children[sh->source]->name); + sinks_str = afr_get_sinks_str (this, local, sh); + if (!sinks_str) + sinks_str = ""; - afr_sh_data_read_write (frame, this); - } + gf_asprintf (&sh->data_sh_info, " data self heal from %s %s with " + "%s data %s", priv->children[sh->source]->name, sinks_str, + sizes_str, pending_matrix_str); - return 0; + if (pending_matrix_str && strcmp (pending_matrix_str, "")) + GF_FREE (pending_matrix_str); + + if (sizes_str && strcmp (sizes_str, "")) + GF_FREE (sizes_str); } +void +afr_sh_data_fix (call_frame_t *frame, xlator_t *this) +{ + int source = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + source = sh->source; + sh->block_size = this->ctx->page_size; + sh->file_size = sh->buf[source].ia_size; + + if (FILE_HAS_HOLES (&sh->buf[source])) + sh->file_has_holes = 1; + + if (sh->background && sh->unwind && !sh->unwound) { + sh->unwind (sh->orig_frame, this, sh->op_ret, sh->op_errno, + is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)); + sh->unwound = _gf_true; + } + + afr_sh_mark_source_sinks (frame, this); + if (sh->active_sinks == 0) { + gf_log (this->name, GF_LOG_INFO, + "no active sinks for performing self-heal on file %s", + local->loc.path); + afr_sh_data_finish (frame, this); + return; + } + + gf_log (this->name, GF_LOG_DEBUG, + "self-healing file %s from subvolume %s to %d other", + local->loc.path, priv->children[sh->source]->name, + sh->active_sinks); + + sh->actual_sh_started = _gf_true; + afr_set_self_heal_status (sh, AFR_SELF_HEAL_SYNC_BEGIN); + afr_sh_data_trim_sinks (frame, this); +} int -afr_sh_data_open (call_frame_t *frame, xlator_t *this) +afr_sh_data_fxattrop_fstat_done (call_frame_t *frame, xlator_t *this) { - int i = 0; - int call_count = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int nsources = 0; + int ret = 0; + int *old_sources = NULL; + int tstamp_source = 0; + int i = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + gf_log (this->name, GF_LOG_DEBUG, "Pending matrix for: %s", + lkowner_utoa (&frame->root->lk_owner)); + if (sh->sync_done) { + //store sources before sync so that mtime can be set using the + //iatt buf from one of them. + old_sources = alloca (priv->child_count*sizeof (*old_sources)); + memcpy (old_sources, sh->sources, + priv->child_count * sizeof (*old_sources)); + } - int source = -1; - int *sources = NULL; + nsources = afr_build_sources (this, sh->xattr, sh->buf, sh->pending_matrix, + sh->sources, sh->success_children, + AFR_DATA_TRANSACTION, NULL, _gf_true); + if ((nsources == -1) + && (priv->favorite_child != -1) + && (sh->child_errno[priv->favorite_child] == 0)) { - fd_t *fd = NULL; + gf_log (this->name, GF_LOG_DEBUG, + "Picking favorite child %s as authentic source to " + "resolve conflicting data of %s", + priv->children[priv->favorite_child]->name, + local->loc.path); + + sh->sources[priv->favorite_child] = 1; - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - afr_self_heal_t *sh = NULL; + nsources = afr_sh_source_count (sh->sources, + priv->child_count); + } - local = frame->local; - sh = &local->self_heal; - priv = this->private; + if (nsources == -1) { + afr_sh_print_split_brain_log (sh->pending_matrix, this, + local->loc.path); + afr_set_split_brain (this, sh->inode, DONT_KNOW, SPB); - call_count = sh->active_sinks + 1; - local->call_count = call_count; + afr_sh_data_fail (frame, this); + return 0; + } - fd = fd_create (local->loc.inode, frame->root->pid); - sh->healing_fd = fd; + afr_set_split_brain (this, sh->inode, DONT_KNOW, NO_SPB); - source = local->self_heal.source; - sources = local->self_heal.sources; + ret = afr_sh_inode_set_read_ctx (sh, this); + if (ret) { + gf_log (this->name, GF_LOG_DEBUG, + "No active sources found."); - sh->block_size = 65536; - sh->file_size = sh->buf[source].st_size; + afr_sh_data_fail (frame, this); + return 0; + } - if (FILE_HAS_HOLES (&sh->buf[source])) - sh->file_has_holes = 1; + if (sh->sync_done) { + /* Perform setattr from one of the old_sources if possible + * Because only they have the correct mtime, the new sources + * (i.e. old sinks) have mtime from last writev in sync. + */ + tstamp_source = sh->source; + for (i = 0; i < priv->child_count; i++) { + if (old_sources[i] && sh->sources[i]) + tstamp_source = i; + } + afr_sh_data_setattr (frame, this, &sh->buf[tstamp_source]); + } else { + afr_set_data_sh_info_str (local, sh, this); + if (nsources == 0) { + gf_log (this->name, GF_LOG_DEBUG, + "No self-heal needed for %s", + local->loc.path); + + afr_sh_data_finish (frame, this); + return 0; + } - /* open source */ - STACK_WIND_COOKIE (frame, afr_sh_data_open_cbk, - (void *) (long) source, - priv->children[source], - priv->children[source]->fops->open, - &local->loc, O_RDONLY|O_LARGEFILE, fd); - call_count--; + if (sh->do_data_self_heal && + afr_data_self_heal_enabled (priv->data_self_heal)) + afr_sh_data_fix (frame, this); + else + afr_sh_data_finish (frame, this); + } + return 0; +} - /* open sinks */ - for (i = 0; i < priv->child_count; i++) { - if(sources[i] || !local->child_up[i]) - continue; - - STACK_WIND_COOKIE (frame, afr_sh_data_open_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->open, - &local->loc, - O_WRONLY|O_LARGEFILE, fd); - - if (!--call_count) - break; - } +int +afr_lookup_select_read_child_by_txn_type (xlator_t *this, afr_local_t *local, + dict_t **xattr, + afr_transaction_type txn_type, + uuid_t gfid) +{ + afr_private_t *priv = NULL; + int read_child = -1; + int32_t **pending_matrix = NULL; + int32_t *sources = NULL; + int32_t *success_children = NULL; + struct iatt *bufs = NULL; + int32_t nsources = 0; + int32_t prev_read_child = -1; + int32_t config_read_child = -1; + int32_t subvol_status = 0; + + priv = this->private; + bufs = local->cont.lookup.bufs; + success_children = local->cont.lookup.success_children; + + pending_matrix = local->cont.lookup.pending_matrix; + sources = local->cont.lookup.sources; + memset (sources, 0, sizeof (*sources) * priv->child_count); + + nsources = afr_build_sources (this, xattr, bufs, pending_matrix, + sources, success_children, txn_type, + &subvol_status, _gf_false); + if (subvol_status & SPLIT_BRAIN) { + gf_log (this->name, GF_LOG_DEBUG, "%s: Possible split-brain", + local->loc.path); + switch (txn_type) { + case AFR_DATA_TRANSACTION: + local->cont.lookup.possible_spb = _gf_true; + nsources = 1; + sources[success_children[0]] = 1; + break; + case AFR_ENTRY_TRANSACTION: + read_child = afr_get_no_xattr_dir_read_child (this, + success_children, + bufs); + sources[read_child] = 1; + nsources = 1; + break; + default: + break; + } + } + if (nsources < 0) + goto out; + + prev_read_child = local->read_child_index; + config_read_child = priv->read_child; + read_child = afr_select_read_child_from_policy (success_children, + priv->child_count, + prev_read_child, + config_read_child, + sources, + priv->hash_mode, gfid); +out: + gf_log (this->name, GF_LOG_DEBUG, "returning read_child: %d", + read_child); + return read_child; +} - return 0; +int +afr_sh_data_fstat_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + struct iatt *buf, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int call_count = -1; + int child_index = (long) cookie; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + LOCK (&frame->lock); + { + if (op_ret != -1) { + gf_log (this->name, GF_LOG_TRACE, + "fstat of %s on %s succeeded", + local->loc.path, + priv->children[child_index]->name); + + sh->buf[child_index] = *buf; + sh->success_children[sh->success_count] = child_index; + sh->success_count++; + } else { + gf_log (this->name, GF_LOG_ERROR, "%s: fstat failed " + "on %s, reason %s", local->loc.path, + priv->children[child_index]->name, + strerror (op_errno)); + sh->child_errno[child_index] = op_errno; + } + } + UNLOCK (&frame->lock); + + call_count = afr_frame_return (frame); + + if (call_count == 0) { + /* Previous versions of glusterfs might have set + * the pending data xattrs which need to be erased + */ + if (!afr_sh_data_proceed (sh->success_count)) { + gf_log (this->name, GF_LOG_ERROR, "inspecting metadata " + "succeeded on < %d children, aborting " + "self-heal for %s", AFR_SH_MIN_PARTICIPANTS, + local->loc.path); + afr_sh_data_fail (frame, this); + goto out; + } + afr_sh_data_fxattrop_fstat_done (frame, this); + } +out: + return 0; } int -afr_sh_data_sync_prepare (call_frame_t *frame, xlator_t *this) +afr_sh_data_fstat (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int active_sinks = 0; - int source = 0; - int i = 0; + afr_self_heal_t *sh = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int call_count = 0; + int i = 0; + int child = 0; + int32_t *fstat_children = NULL; + + priv = this->private; + local = frame->local; + sh = &local->self_heal; + + fstat_children = memdup (sh->success_children, + sizeof (*fstat_children) * priv->child_count); + if (!fstat_children) { + afr_sh_data_fail (frame, this); + goto out; + } + call_count = sh->success_count; + local->call_count = call_count; + + memset (sh->buf, 0, sizeof (*sh->buf) * priv->child_count); + afr_reset_children (sh->success_children, priv->child_count); + sh->success_count = 0; + for (i = 0; i < priv->child_count; i++) { + child = fstat_children[i]; + if (child == -1) + break; + STACK_WIND_COOKIE (frame, afr_sh_data_fstat_cbk, + (void *) (long) child, + priv->children[child], + priv->children[child]->fops->fstat, + sh->healing_fd, NULL); + --call_count; + } + GF_ASSERT (!call_count); +out: + GF_FREE (fstat_children); + return 0; +} - local = frame->local; - sh = &local->self_heal; - priv = this->private; +void +afr_sh_common_fxattrop_resp_handler (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, + int32_t op_errno, dict_t *xattr) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int child_index = (long) cookie; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + LOCK (&frame->lock); + { + if (op_ret != -1) { + gf_log (this->name, GF_LOG_TRACE, + "fxattrop of %s on %s succeeded", + local->loc.path, + priv->children[child_index]->name); + + sh->xattr[child_index] = dict_ref (xattr); + sh->success_children[sh->success_count] = child_index; + sh->success_count++; + } else { + gf_log (this->name, GF_LOG_ERROR, "fxattrop of %s " + "failed on %s, reason %s", local->loc.path, + priv->children[child_index]->name, + strerror (op_errno)); + sh->child_errno[child_index] = op_errno; + } + } + UNLOCK (&frame->lock); +} - source = sh->source; +int +afr_sh_data_fxattrop_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *xattr, dict_t *xdata) +{ + int call_count = -1; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + + afr_sh_common_fxattrop_resp_handler (frame, cookie, this, op_ret, + op_errno, xattr); + + call_count = afr_frame_return (frame); + if (call_count == 0) { + if (!afr_sh_data_proceed (sh->success_count)) { + gf_log (this->name, GF_LOG_ERROR, "%s, inspecting " + "change log succeeded on < %d children", + local->loc.path, AFR_SH_MIN_PARTICIPANTS); + afr_sh_data_fail (frame, this); + goto out; + } + afr_sh_data_fstat (frame, this); + } +out: + return 0; +} + + +int +afr_sh_data_fxattrop (call_frame_t *frame, xlator_t *this) +{ + afr_self_heal_t *sh = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + dict_t **xattr_req; + int32_t *zero_pending = NULL; + int call_count = 0; + int i = 0; + int ret = 0; + int j; + + priv = this->private; + local = frame->local; + sh = &local->self_heal; + + call_count = afr_up_children_count (local->child_up, + priv->child_count); + + local->call_count = call_count; + + xattr_req = GF_CALLOC(priv->child_count, sizeof(struct dict_t *), + gf_afr_mt_dict_t); + if (!xattr_req) + goto out; for (i = 0; i < priv->child_count; i++) { - if (sh->sources[i] == 0 && local->child_up[i] == 1) { - active_sinks++; - sh->success[i] = 1; + xattr_req[i] = dict_new(); + if (!xattr_req[i]) { + ret = -1; + goto out; } } - sh->success[source] = 1; - - if (active_sinks == 0) { - gf_log (this->name, GF_LOG_TRACE, - "no active sinks for performing self-heal on file %s", - local->loc.path); - afr_sh_data_finish (frame, this); - return 0; + + for (i = 0; i < priv->child_count; i++) { + for (j = 0; j < priv->child_count; j++) { + zero_pending = GF_CALLOC (3, sizeof (*zero_pending), + gf_afr_mt_int32_t); + if (!zero_pending) { + ret = -1; + goto out; + } + ret = dict_set_dynptr (xattr_req[i], priv->pending_key[j], + zero_pending, + 3 * sizeof (*zero_pending)); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "Unable to set dict value"); + goto out; + } else { + zero_pending = NULL; + } + } } - sh->active_sinks = active_sinks; - gf_log (this->name, GF_LOG_DEBUG, - "self-healing file %s from subvolume %s to %d other", - local->loc.path, priv->children[source]->name, active_sinks); + afr_reset_xattr (sh->xattr, priv->child_count); + afr_reset_children (sh->success_children, priv->child_count); + memset (sh->child_errno, 0, + sizeof (*sh->child_errno) * priv->child_count); + sh->success_count = 0; + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND_COOKIE (frame, afr_sh_data_fxattrop_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fxattrop, + sh->healing_fd, GF_XATTROP_ADD_ARRAY, + xattr_req[i], NULL); + + if (!--call_count) + break; + } + } - afr_sh_data_open (frame, this); +out: + if (xattr_req) { + for (i = 0; i < priv->child_count; i++) + if (xattr_req[i]) + dict_unref(xattr_req[i]); + GF_FREE(xattr_req); + } - return 0; -} + if (ret) { + GF_FREE (zero_pending); + afr_sh_data_fail (frame, this); + } + return 0; +} int -afr_sh_data_fix (call_frame_t *frame, xlator_t *this) +afr_sh_data_big_lock_success (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int nsources = 0; - int source = 0; - int i = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + local = frame->local; + sh = &local->self_heal; - afr_sh_build_pending_matrix (priv, sh->pending_matrix, sh->xattr, - priv->child_count, AFR_DATA_TRANSACTION); + sh->data_lock_held = _gf_true; + afr_sh_data_fxattrop (frame, this); + return 0; +} - afr_sh_print_pending_matrix (sh->pending_matrix, this); +int +afr_sh_dom_lock_success (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - nsources = afr_sh_mark_sources (sh, priv->child_count, - AFR_SELF_HEAL_DATA); + local = frame->local; + sh = &local->self_heal; - afr_sh_supress_errenous_children (sh->sources, sh->child_errno, - priv->child_count); + sh->sh_dom_lock_held = _gf_true; + afr_sh_data_lock (frame, this, 0, 0, _gf_true, this->name, + afr_sh_data_big_lock_success, + afr_sh_data_fail); + return 0; +} - if (nsources == 0) { - gf_log (this->name, GF_LOG_TRACE, - "No self-heal needed for %s", - local->loc.path); +int +afr_sh_data_post_blocking_inodelk_cbk (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - afr_sh_data_finish (frame, this); - return 0; - } + local = frame->local; + int_lock = &local->internal_lock; + sh = &local->self_heal; - if ((nsources == -1) - && (priv->favorite_child != -1) - && (sh->child_errno[priv->favorite_child] == 0)) { + if (int_lock->lock_op_ret < 0) { + gf_log (this->name, GF_LOG_ERROR, "Blocking data inodelks " + "failed for %s. by %s", + local->loc.path, lkowner_utoa (&frame->root->lk_owner)); - gf_log (this->name, GF_LOG_DEBUG, - "Picking favorite child %s as authentic source to resolve conflicting data of %s", - priv->children[priv->favorite_child]->name, - local->loc.path); + sh->data_lock_failure_handler (frame, this); + } else { - sh->sources[priv->favorite_child] = 1; + gf_log (this->name, GF_LOG_DEBUG, "Blocking data inodelks " + "done for %s by %s. Proceding to self-heal", + local->loc.path, lkowner_utoa (&frame->root->lk_owner)); - nsources = afr_sh_source_count (sh->sources, - priv->child_count); - } + sh->data_lock_success_handler (frame, this); + } - if (nsources == -1) { - gf_log (this->name, GF_LOG_ERROR, - "Unable to self-heal contents of '%s' (possible split-brain). " - "Please delete the file from all but the preferred " - "subvolume.", local->loc.path); + return 0; +} - local->govinda_gOvinda = 1; +int +afr_sh_data_post_nonblocking_inodelk_cbk (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - afr_sh_data_finish (frame, this); - return 0; - } + local = frame->local; + int_lock = &local->internal_lock; + sh = &local->self_heal; - source = afr_sh_select_source (sh->sources, priv->child_count); - - if (source == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "No active sources found."); + if (int_lock->lock_op_ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, "Non Blocking data inodelks " + "failed for %s. by %s", + local->loc.path, lkowner_utoa (&frame->root->lk_owner)); - afr_sh_data_finish (frame, this); - return 0; - } + if (!sh->data_lock_block) { + sh->data_lock_failure_handler(frame, this); + } else { + int_lock->lock_cbk = + afr_sh_data_post_blocking_inodelk_cbk; + afr_blocking_lock (frame, this); + } + } else { - sh->source = source; - local->cont.lookup.buf.st_size = sh->buf[source].st_size; + gf_log (this->name, GF_LOG_DEBUG, "Non Blocking data inodelks " + "done for %s by %s. Proceeding to self-heal", + local->loc.path, lkowner_utoa (&frame->root->lk_owner)); + sh->data_lock_success_handler (frame, this); + } - /* detect changes not visible through pending flags -- JIC */ - for (i = 0; i < priv->child_count; i++) { - if (i == source || sh->child_errno[i]) - continue; + return 0; +} - if (SIZE_DIFFERS (&sh->buf[i], &sh->buf[source])) - sh->sources[i] = 0; - } +int +afr_sh_data_lock_rec (call_frame_t *frame, xlator_t *this, char *dom, + off_t start, off_t len) +{ + afr_internal_lock_t *int_lock = NULL; + afr_inodelk_t *inodelk = NULL; + afr_local_t *local = NULL; - afr_sh_data_sync_prepare (frame, this); + local = frame->local; + int_lock = &local->internal_lock; - return 0; -} + int_lock->transaction_lk_type = AFR_SELFHEAL_LK; + int_lock->selfheal_lk_type = AFR_DATA_SELF_HEAL_LK; + afr_set_lock_number (frame, this); -int -afr_sh_data_lookup_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf, dict_t *xattr) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - - int call_count = -1; - int child_index = (long) cookie; - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - LOCK (&frame->lock); - { - if (op_ret != -1) { - sh->xattr[child_index] = dict_ref (xattr); - sh->buf[child_index] = *buf; - } - } - UNLOCK (&frame->lock); + int_lock->lock_cbk = afr_sh_data_post_nonblocking_inodelk_cbk; - call_count = afr_frame_return (frame); + int_lock->domain = dom; + inodelk = afr_get_inodelk (int_lock, int_lock->domain); + inodelk->flock.l_start = start; + inodelk->flock.l_len = len; + inodelk->flock.l_type = F_WRLCK; - if (call_count == 0) { - afr_sh_data_fix (frame, this); - } + afr_nonblocking_inodelk (frame, this); - return 0; + return 0; } +int +afr_post_sh_big_lock_success (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + + GF_ASSERT (sh->old_loop_frame); + sh_loop_finish (sh->old_loop_frame, this); + sh->old_loop_frame = NULL; + sh->data_lock_held = _gf_true; + sh->sync_done = _gf_true; + afr_sh_data_fxattrop (frame, this); + return 0; +} int -afr_sh_data_lookup (call_frame_t *frame, xlator_t *this) +afr_post_sh_big_lock_failure (call_frame_t *frame, xlator_t *this) { - afr_self_heal_t *sh = NULL; - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - dict_t *xattr_req = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - int call_count = 0; - int i = 0; - int ret = 0; + local = frame->local; + sh = &local->self_heal; - priv = this->private; - local = frame->local; - sh = &local->self_heal; + GF_ASSERT (sh->old_loop_frame); + sh_loop_finish (sh->old_loop_frame, this); + sh->old_loop_frame = NULL; + afr_sh_set_timestamps (frame, this); + return 0; +} - call_count = local->child_count; - local->call_count = call_count; - - xattr_req = dict_new(); - if (xattr_req) { - for (i = 0; i < priv->child_count; i++) { - ret = dict_set_uint64 (xattr_req, priv->pending_key[i], - 3 * sizeof(int32_t)); - } - } +int +afr_sh_data_lock (call_frame_t *frame, xlator_t *this, + off_t start, off_t len, gf_boolean_t block, + char *dom, afr_lock_cbk_t success_handler, + afr_lock_cbk_t failure_handler) +{ + afr_local_t * local = NULL; + afr_self_heal_t * sh = NULL; - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_sh_data_lookup_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->lookup, - &local->loc, xattr_req); - if (!--call_count) - break; - } - } - - if (xattr_req) - dict_unref (xattr_req); + local = frame->local; + sh = &local->self_heal; - return 0; + sh->data_lock_success_handler = success_handler; + sh->data_lock_failure_handler = failure_handler; + sh->data_lock_block = block; + return afr_sh_data_lock_rec (frame, this, dom, start, len); } - int -afr_sh_data_lock_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) +afr_sh_data_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, fd_t *fd, dict_t *xdata) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int call_count = 0; - int child_index = (long) cookie; - - /* TODO: what if lock fails? */ - - local = frame->local; - sh = &local->self_heal; - - LOCK (&frame->lock); - { - if (op_ret == -1) { - sh->op_failed = 1; - - gf_log (this->name, - GF_LOG_DEBUG, - "locking of %s on child %d failed: %s", - local->loc.path, child_index, - strerror (op_errno)); - } else { - gf_log (this->name, GF_LOG_TRACE, - "inode of %s on child %d locked", - local->loc.path, child_index); - } - } - UNLOCK (&frame->lock); + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int call_count = 0; + int child_index = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + child_index = (long) cookie; + + /* TODO: some of the open's might fail. + In that case, modify cleanup fn to send flush on those + fd's which are already open */ + + LOCK (&frame->lock); + { + if (op_ret == -1) { + gf_log (this->name, GF_LOG_ERROR, + "open of %s failed on child %s (%s)", + local->loc.path, + priv->children[child_index]->name, + strerror (op_errno)); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } else { + gf_log (this->name, GF_LOG_TRACE, + "open of %s succeeded on child %s", + local->loc.path, + priv->children[child_index]->name); + } + } + UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + call_count = afr_frame_return (frame); - if (call_count == 0) { - if (sh->op_failed) { - afr_sh_data_finish (frame, this); - return 0; - } + if (call_count == 0) { + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + afr_sh_data_fail (frame, this); + return 0; + } - afr_sh_data_lookup (frame, this); - } + gf_log (this->name, GF_LOG_TRACE, + "fd for %s opened, commencing sync", + local->loc.path); - return 0; + afr_sh_data_lock (frame, this, 0, 0, _gf_true, priv->sh_domain, + afr_sh_dom_lock_success, afr_sh_data_fail); + } + + return 0; } int -afr_sh_data_lock (call_frame_t *frame, xlator_t *this) +afr_sh_data_open (call_frame_t *frame, xlator_t *this) { - struct flock flock; - int i = 0; - int call_count = 0; - - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - afr_self_heal_t * sh = NULL; - + int i = 0; + int call_count = 0; + fd_t *fd = NULL; + afr_local_t * local = NULL; + afr_private_t * priv = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + call_count = afr_up_children_count (local->child_up, priv->child_count); + local->call_count = call_count; + + fd = fd_create (local->loc.inode, frame->root->pid); + sh->healing_fd = fd; + + /* open sinks */ + for (i = 0; i < priv->child_count; i++) { + if(!local->child_up[i]) + continue; + + STACK_WIND_COOKIE (frame, afr_sh_data_open_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->open, + &local->loc, + O_RDWR|O_LARGEFILE, fd, NULL); + + if (!--call_count) + break; + } - local = frame->local; - sh = &local->self_heal; - priv = this->private; + return 0; +} - call_count = local->child_count; +void +afr_sh_non_reg_fix (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + afr_local_t *local = NULL; + int i = 0; + + if (op_ret < 0) { + afr_sh_data_fail (frame, this); + return; + } - local->call_count = call_count; + local = frame->local; + sh = &local->self_heal; + priv = this->private; - flock.l_start = 0; - flock.l_len = 0; - flock.l_type = F_WRLCK; + for (i = 0; i < priv->child_count ; i++) { + if (1 == local->child_up[i]) + sh->success[i] = 1; + } - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - gf_log (this->name, GF_LOG_TRACE, - "locking %s on subvolume %s", - local->loc.path, priv->children[i]->name); - - STACK_WIND_COOKIE (frame, afr_sh_data_lock_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->inodelk, - this->name, - &local->loc, F_SETLK, &flock); - if (!--call_count) - break; - } - } + afr_sh_erase_pending (frame, this, AFR_DATA_TRANSACTION, + afr_sh_data_erase_pending_cbk, + afr_sh_data_finish); +} - return 0; +int +afr_sh_non_reg_lock_success (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + sh->data_lock_held = _gf_true; + afr_sh_common_lookup (frame, this, &local->loc, + afr_sh_non_reg_fix, NULL, + AFR_LOOKUP_FAIL_CONFLICTS | + AFR_LOOKUP_FAIL_MISSING_GFIDS, + NULL); + return 0; } +gf_boolean_t +afr_can_start_data_self_heal (afr_self_heal_t *sh, afr_private_t *priv) +{ + if (sh->force_confirm_spb) + return _gf_true; + if (sh->do_data_self_heal && + afr_data_self_heal_enabled (priv->data_self_heal)) + return _gf_true; + return _gf_false; +} int afr_self_heal_data (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = this->private; - - - local = frame->local; - sh = &local->self_heal; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = this->private; + int ret = -1; + + local = frame->local; + sh = &local->self_heal; + + sh->sh_type_in_action = AFR_SELF_HEAL_DATA; + + if (afr_can_start_data_self_heal (sh, priv)) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_STARTED); + ret = afr_inodelk_init (&local->internal_lock.inodelk[1], + priv->sh_domain, priv->child_count); + if (ret < 0) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_data_done (frame, this); + return 0; + } - if (local->need_data_self_heal && priv->data_self_heal) { - afr_sh_data_lock (frame, this); - } else { - gf_log (this->name, GF_LOG_TRACE, - "not doing data self heal on %s", - local->loc.path); - afr_sh_data_done (frame, this); - } + if (IA_ISREG (sh->type)) { + afr_sh_data_open (frame, this); + } else { + afr_sh_data_lock (frame, this, 0, 0, _gf_true, + this->name, + afr_sh_non_reg_lock_success, + afr_sh_data_fail); + } + } else { + gf_log (this->name, GF_LOG_TRACE, + "not doing data self heal on %s", + local->loc.path); + afr_sh_data_done (frame, this); + } - return 0; + return 0; } - diff --git a/xlators/cluster/afr/src/afr-self-heal-entry.c b/xlators/cluster/afr/src/afr-self-heal-entry.c index a5e698cd2..53491a1d7 100644 --- a/xlators/cluster/afr/src/afr-self-heal-entry.c +++ b/xlators/cluster/afr/src/afr-self-heal-entry.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> This file is part of GlusterFS. - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #include <libgen.h> @@ -30,6 +21,7 @@ #endif #include "glusterfs.h" +#include "inode.h" #include "afr.h" #include "dict.h" #include "xlator.h" @@ -48,2053 +40,2331 @@ #include "afr-self-heal.h" #include "afr-self-heal-common.h" +#define AFR_INIT_SH_FRAME_VALS(_frame, _local, _sh, _sh_frame, _sh_local, _sh_sh)\ + do {\ + _local = _frame->local;\ + _sh = &_local->self_heal;\ + _sh_frame = _sh->sh_frame;\ + _sh_local = _sh_frame->local;\ + _sh_sh = &_sh_local->self_heal;\ + } while (0); - +int +afr_sh_entry_impunge_create_file (call_frame_t *impunge_frame, xlator_t *this, + int child_index); int afr_sh_entry_done (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - /* - TODO: cleanup sh->* - */ - - gf_log (this->name, GF_LOG_TRACE, - "self heal of %s completed", - local->loc.path); - - sh->completion_cbk (frame, this); + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - return 0; -} + local = frame->local; + sh = &local->self_heal; + sh->completion_cbk (frame, this); -int -afr_sh_entry_unlck_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int call_count = 0; - int child_index = (long) cookie; - - /* TODO: what if lock fails? */ - - local = frame->local; - sh = &local->self_heal; - - LOCK (&frame->lock); - { - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "unlocking inode of %s on child %d failed: %s", - local->loc.path, child_index, - strerror (op_errno)); - } else { - gf_log (this->name, GF_LOG_TRACE, - "unlocked inode of %s on child %d", - local->loc.path, child_index); - } - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) { - if (sh->healing_fd) - fd_unref (sh->healing_fd); - sh->healing_fd = NULL; - afr_sh_entry_done (frame, this); - } - - return 0; + return 0; } int afr_sh_entry_unlock (call_frame_t *frame, xlator_t *this) { - int i = 0; - int call_count = 0; + afr_local_t *local = NULL; + afr_internal_lock_t *int_lock = NULL; - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - afr_self_heal_t * sh = NULL; + local = frame->local; + int_lock = &local->internal_lock; + int_lock->lock_cbk = afr_sh_entry_done; + afr_unlock (frame, this); - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - call_count = local->child_count; - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - gf_log (this->name, GF_LOG_TRACE, - "unlocking %s on subvolume %s", - local->loc.path, priv->children[i]->name); - - STACK_WIND_COOKIE (frame, afr_sh_entry_unlck_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->entrylk, - this->name, - &local->loc, NULL, - ENTRYLK_UNLOCK, ENTRYLK_WRLCK); - if (!--call_count) - break; - } - } - - return 0; + return 0; } int afr_sh_entry_finish (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; + afr_local_t *local = NULL; - local = frame->local; + local = frame->local; - gf_log (this->name, GF_LOG_TRACE, - "finishing entry selfheal of %s", local->loc.path); + gf_log (this->name, GF_LOG_TRACE, + "finishing entry selfheal of %s", local->loc.path); - afr_sh_entry_unlock (frame, this); + afr_sh_entry_unlock (frame, this); - return 0; + return 0; } int afr_sh_entry_erase_pending_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, - int32_t op_errno, dict_t *xattr) + xlator_t *this, int32_t op_ret, + int32_t op_errno, dict_t *xattr, dict_t *xdata) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; + long i = 0; + int call_count = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_local_t *orig_local = NULL; + call_frame_t *orig_frame = NULL; + afr_private_t *priv = NULL; + int32_t read_child = -1; + + local = frame->local; + priv = this->private; + sh = &local->self_heal; + i = (long)cookie; - local = frame->local; - sh = &local->self_heal; - priv = this->private; - LOCK (&frame->lock); - { - } - UNLOCK (&frame->lock); + afr_children_add_child (sh->fresh_children, i, priv->child_count); + if (op_ret == -1) { + gf_log (this->name, GF_LOG_INFO, + "%s: failed to erase pending xattrs on %s (%s)", + local->loc.path, priv->children[i]->name, + strerror (op_errno)); + } - call_count = afr_frame_return (frame); + call_count = afr_frame_return (frame); - if (call_count == 0) - afr_sh_entry_finish (frame, this); + if (call_count == 0) { + if (sh->source == -1) { + //this happens if the forced merge option is set + read_child = sh->fresh_children[0]; + } else { + read_child = sh->source; + } + afr_inode_set_read_ctx (this, sh->inode, read_child, + sh->fresh_children); + orig_frame = sh->orig_frame; + orig_local = orig_frame->local; + + if (sh->source != -1) { + orig_local->cont.lookup.buf.ia_nlink = sh->buf[sh->source].ia_nlink; + } - return 0; + afr_sh_entry_finish (frame, this); + } + + return 0; } int afr_sh_entry_erase_pending (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; - int i = 0; - dict_t **erase_xattr = NULL; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - afr_sh_pending_to_delta (priv, sh->xattr, sh->delta_matrix, sh->success, - priv->child_count, AFR_ENTRY_TRANSACTION); - - erase_xattr = CALLOC (sizeof (*erase_xattr), priv->child_count); - - for (i = 0; i < priv->child_count; i++) { - if (sh->xattr[i]) { - call_count++; - - erase_xattr[i] = get_new_dict(); - dict_ref (erase_xattr[i]); - } - } - - afr_sh_delta_to_xattr (priv, sh->delta_matrix, erase_xattr, - priv->child_count, AFR_ENTRY_TRANSACTION); - - local->call_count = call_count; - for (i = 0; i < priv->child_count; i++) { - if (!erase_xattr[i]) - continue; - - gf_log (this->name, GF_LOG_TRACE, - "erasing pending flags from %s on %s", - local->loc.path, priv->children[i]->name); - - STACK_WIND_COOKIE (frame, afr_sh_entry_erase_pending_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->xattrop, - &local->loc, - GF_XATTROP_ADD_ARRAY, erase_xattr[i]); - if (!--call_count) - break; - } - - for (i = 0; i < priv->child_count; i++) { - if (erase_xattr[i]) { - dict_unref (erase_xattr[i]); - } - } - FREE (erase_xattr); - - return 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + + if (sh->entries_skipped) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + goto out; + } + afr_sh_erase_pending (frame, this, AFR_ENTRY_TRANSACTION, + afr_sh_entry_erase_pending_cbk, + afr_sh_entry_finish); + return 0; +out: + afr_sh_entry_finish (frame, this); + return 0; } static int next_active_source (call_frame_t *frame, xlator_t *this, - int current_active_source) + int current_active_source) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int source = -1; - int next_active_source = -1; - int i = 0; - - priv = this->private; - local = frame->local; - sh = &local->self_heal; - - source = sh->source; - - if (source != -1) { - if (current_active_source != source) - next_active_source = source; - goto out; - } - - /* - the next active sink becomes the source for the - 'conservative decision' of merging all entries - */ - - for (i = 0; i < priv->child_count; i++) { - if ((sh->sources[i] == 0) - && (local->child_up[i] == 1) - && (i > current_active_source)) { - - next_active_source = i; - break; - } - } -out: - return next_active_source; -} + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int source = -1; + int next_active_source = -1; + int i = 0; + + priv = this->private; + local = frame->local; + sh = &local->self_heal; + source = sh->source; + if (source != -1) { + if (current_active_source != source) + next_active_source = source; + goto out; + } -static int -next_active_sink (call_frame_t *frame, xlator_t *this, - int current_active_sink) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int next_active_sink = -1; - int i = 0; - - priv = this->private; - local = frame->local; - sh = &local->self_heal; - - /* - the next active sink becomes the source for the - 'conservative decision' of merging all entries - */ - - for (i = 0; i < priv->child_count; i++) { - if ((sh->sources[i] == 0) - && (local->child_up[i] == 1) - && (i > current_active_sink)) { - - next_active_sink = i; - break; - } - } - - return next_active_sink; -} + /* + the next active sink becomes the source for the + 'conservative decision' of merging all entries + */ + for (i = 0; i < priv->child_count; i++) { + if ((sh->sources[i] == 0) + && (local->child_up[i] == 1) + && (i > current_active_source)) { -int -build_child_loc (xlator_t *this, loc_t *child, loc_t *parent, char *name) -{ - int ret = -1; + next_active_source = i; + break; + } + } +out: + return next_active_source; +} - if (!child) { - goto out; - } - if (strcmp (parent->path, "/") == 0) - asprintf ((char **)&child->path, "/%s", name); - else - asprintf ((char **)&child->path, "%s/%s", parent->path, name); - if (!child->path) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } +static int +next_active_sink (call_frame_t *frame, xlator_t *this, + int current_active_sink) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int next_active_sink = -1; + int i = 0; - child->name = strrchr (child->path, '/'); - if (child->name) - child->name++; + priv = this->private; + local = frame->local; + sh = &local->self_heal; - child->parent = inode_ref (parent->inode); - child->inode = inode_new (parent->inode->table); + /* + the next active sink becomes the source for the + 'conservative decision' of merging all entries + */ - if (!child->inode) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } + for (i = 0; i < priv->child_count; i++) { + if ((sh->sources[i] == 0) + && (local->child_up[i] == 1) + && (i > current_active_sink)) { - ret = 0; -out: - if (ret == -1) - loc_wipe (child); + next_active_sink = i; + break; + } + } - return ret; + return next_active_sink; } +int +afr_sh_entry_impunge_all (call_frame_t *frame, xlator_t *this); + +int +afr_sh_entry_impunge_subvol (call_frame_t *frame, xlator_t *this); int afr_sh_entry_expunge_all (call_frame_t *frame, xlator_t *this); int afr_sh_entry_expunge_subvol (call_frame_t *frame, xlator_t *this, - int active_src); + int active_src); int afr_sh_entry_expunge_entry_done (call_frame_t *frame, xlator_t *this, - int active_src) + int active_src, int32_t op_ret, + int32_t op_errno) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int call_count = 0; + int call_count = 0; - priv = this->private; - local = frame->local; - sh = &local->self_heal; + call_count = afr_frame_return (frame); - LOCK (&frame->lock); - { - } - UNLOCK (&frame->lock); + if (call_count == 0) + afr_sh_entry_expunge_subvol (frame, this, active_src); - call_count = afr_frame_return (frame); + return 0; +} + +int +afr_sh_entry_expunge_parent_setattr_cbk (call_frame_t *expunge_frame, + void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *preop, struct iatt *postop, + dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *expunge_local = NULL; + afr_self_heal_t *expunge_sh = NULL; + call_frame_t *frame = NULL; + int active_src = (long) cookie; + afr_self_heal_t *sh = NULL; + afr_local_t *local = NULL; + + priv = this->private; + expunge_local = expunge_frame->local; + expunge_sh = &expunge_local->self_heal; + frame = expunge_sh->sh_frame; + local = frame->local; + sh = &local->self_heal; + + if (op_ret != 0) { + gf_log (this->name, GF_LOG_ERROR, + "setattr on parent directory of %s on subvolume %s failed: %s", + expunge_local->loc.path, + priv->children[active_src]->name, strerror (op_errno)); + } - if (call_count == 0) - afr_sh_entry_expunge_subvol (frame, this, active_src); + AFR_STACK_DESTROY (expunge_frame); + sh->expunge_done (frame, this, active_src, op_ret, op_errno); - return 0; + return 0; } int afr_sh_entry_expunge_remove_cbk (call_frame_t *expunge_frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno) + xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - afr_private_t *priv = NULL; - afr_local_t *expunge_local = NULL; - afr_self_heal_t *expunge_sh = NULL; - int active_src = 0; - call_frame_t *frame = NULL; - - - priv = this->private; - expunge_local = expunge_frame->local; - expunge_sh = &expunge_local->self_heal; - frame = expunge_sh->sh_frame; - - active_src = (long) cookie; - - if (op_ret == 0) { - gf_log (this->name, GF_LOG_DEBUG, - "removed %s on %s", - expunge_local->loc.path, - priv->children[active_src]->name); - } else { - gf_log (this->name, GF_LOG_DEBUG, - "removing %s on %s failed (%s)", - expunge_local->loc.path, - priv->children[active_src]->name, - strerror (op_errno)); - } - - AFR_STACK_DESTROY (expunge_frame); - afr_sh_entry_expunge_entry_done (frame, this, active_src); - - return 0; + afr_private_t *priv = NULL; + afr_local_t *expunge_local = NULL; + afr_self_heal_t *expunge_sh = NULL; + int active_src = 0; + int32_t valid = 0; + + priv = this->private; + expunge_local = expunge_frame->local; + expunge_sh = &expunge_local->self_heal; + + active_src = (long) cookie; + + if (op_ret == 0) { + gf_log (this->name, GF_LOG_DEBUG, + "removed %s on %s", + expunge_local->loc.path, + priv->children[active_src]->name); + } else { + gf_log (this->name, GF_LOG_INFO, + "removing %s on %s failed (%s)", + expunge_local->loc.path, + priv->children[active_src]->name, + strerror (op_errno)); + } + + valid = GF_SET_ATTR_ATIME | GF_SET_ATTR_MTIME; + + STACK_WIND_COOKIE (expunge_frame, afr_sh_entry_expunge_parent_setattr_cbk, + (void *) (long) active_src, + priv->children[active_src], + priv->children[active_src]->fops->setattr, + &expunge_sh->parent_loc, + &expunge_sh->parentbuf, + valid, NULL); + + return 0; } int -afr_sh_entry_expunge_rmdir (call_frame_t *expunge_frame, xlator_t *this, - int active_src) +afr_sh_entry_expunge_unlink (call_frame_t *expunge_frame, xlator_t *this, + int active_src) { - afr_private_t *priv = NULL; - afr_local_t *expunge_local = NULL; + afr_private_t *priv = NULL; + afr_local_t *expunge_local = NULL; - priv = this->private; - expunge_local = expunge_frame->local; + priv = this->private; + expunge_local = expunge_frame->local; - gf_log (this->name, GF_LOG_TRACE, - "removing directory %s on %s", - expunge_local->loc.path, priv->children[active_src]->name); + gf_log (this->name, GF_LOG_TRACE, + "expunging file %s on %s", + expunge_local->loc.path, priv->children[active_src]->name); - STACK_WIND_COOKIE (expunge_frame, afr_sh_entry_expunge_remove_cbk, - (void *) (long) active_src, - priv->children[active_src], - priv->children[active_src]->fops->rmdir, - &expunge_local->loc); + STACK_WIND_COOKIE (expunge_frame, afr_sh_entry_expunge_remove_cbk, + (void *) (long) active_src, + priv->children[active_src], + priv->children[active_src]->fops->unlink, + &expunge_local->loc, 0, NULL); - return 0; + return 0; } + int -afr_sh_entry_expunge_unlink (call_frame_t *expunge_frame, xlator_t *this, - int active_src) +afr_sh_entry_expunge_rmdir (call_frame_t *expunge_frame, xlator_t *this, + int active_src) { - afr_private_t *priv = NULL; - afr_local_t *expunge_local = NULL; - - priv = this->private; - expunge_local = expunge_frame->local; - - gf_log (this->name, GF_LOG_TRACE, - "unlinking file %s on %s", - expunge_local->loc.path, priv->children[active_src]->name); - - STACK_WIND_COOKIE (expunge_frame, afr_sh_entry_expunge_remove_cbk, - (void *) (long) active_src, - priv->children[active_src], - priv->children[active_src]->fops->unlink, - &expunge_local->loc); - - return 0; + afr_private_t *priv = NULL; + afr_local_t *expunge_local = NULL; + + priv = this->private; + expunge_local = expunge_frame->local; + + gf_log (this->name, GF_LOG_DEBUG, + "expunging directory %s on %s", + expunge_local->loc.path, priv->children[active_src]->name); + + STACK_WIND_COOKIE (expunge_frame, afr_sh_entry_expunge_remove_cbk, + (void *) (long) active_src, + priv->children[active_src], + priv->children[active_src]->fops->rmdir, + &expunge_local->loc, 1, NULL); + + return 0; } int afr_sh_entry_expunge_remove (call_frame_t *expunge_frame, xlator_t *this, - int active_src, struct stat *buf) + int active_src, struct iatt *buf, + struct iatt *parentbuf) { - afr_private_t *priv = NULL; - afr_local_t *expunge_local = NULL; - afr_self_heal_t *expunge_sh = NULL; - int source = 0; - call_frame_t *frame = NULL; - int type = 0; - - priv = this->private; - expunge_local = expunge_frame->local; - expunge_sh = &expunge_local->self_heal; - frame = expunge_sh->sh_frame; - source = expunge_sh->source; - - type = (buf->st_mode & S_IFMT); - - switch (type) { - case S_IFSOCK: - case S_IFREG: - case S_IFBLK: - case S_IFCHR: - case S_IFIFO: - case S_IFLNK: - afr_sh_entry_expunge_unlink (expunge_frame, this, active_src); - - break; - case S_IFDIR: - afr_sh_entry_expunge_rmdir (expunge_frame, this, active_src); - break; - default: - gf_log (this->name, GF_LOG_ERROR, - "%s has unknown file type on %s: 0%o", - expunge_local->loc.path, - priv->children[source]->name, type); - goto out; - break; - } - - return 0; + afr_private_t *priv = NULL; + afr_local_t *expunge_local = NULL; + afr_self_heal_t *expunge_sh = NULL; + call_frame_t *frame = NULL; + int type = 0; + afr_self_heal_t *sh = NULL; + afr_local_t *local = NULL; + loc_t *loc = NULL; + + priv = this->private; + expunge_local = expunge_frame->local; + expunge_sh = &expunge_local->self_heal; + frame = expunge_sh->sh_frame; + local = frame->local; + sh = &local->self_heal; + loc = &expunge_local->loc; + + type = buf->ia_type; + if (loc->parent && uuid_is_null (loc->parent->gfid)) + uuid_copy (loc->pargfid, parentbuf->ia_gfid); + + switch (type) { + case IA_IFSOCK: + case IA_IFREG: + case IA_IFBLK: + case IA_IFCHR: + case IA_IFIFO: + case IA_IFLNK: + afr_sh_entry_expunge_unlink (expunge_frame, this, active_src); + break; + case IA_IFDIR: + afr_sh_entry_expunge_rmdir (expunge_frame, this, active_src); + break; + default: + gf_log (this->name, GF_LOG_ERROR, + "%s has unknown file type on %s: 0%o", + expunge_local->loc.path, + priv->children[active_src]->name, type); + goto out; + break; + } + + return 0; out: - AFR_STACK_DESTROY (expunge_frame); - afr_sh_entry_expunge_entry_done (frame, this, active_src); + AFR_STACK_DESTROY (expunge_frame); + sh->expunge_done (frame, this, active_src, -1, EINVAL); - return 0; + return 0; } int afr_sh_entry_expunge_lookup_cbk (call_frame_t *expunge_frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf, dict_t *x) + xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *buf, dict_t *x, + struct iatt *postparent) { - afr_private_t *priv = NULL; - afr_local_t *expunge_local = NULL; - afr_self_heal_t *expunge_sh = NULL; - call_frame_t *frame = NULL; - int active_src = 0; - - priv = this->private; - expunge_local = expunge_frame->local; - expunge_sh = &expunge_local->self_heal; - frame = expunge_sh->sh_frame; - active_src = (long) cookie; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_TRACE, - "lookup of %s on %s failed (%s)", - expunge_local->loc.path, - priv->children[active_src]->name, - strerror (op_errno)); - goto out; - } - - afr_sh_entry_expunge_remove (expunge_frame, this, active_src, buf); - - return 0; + afr_private_t *priv = NULL; + afr_local_t *expunge_local = NULL; + afr_self_heal_t *expunge_sh = NULL; + call_frame_t *frame = NULL; + int active_src = 0; + afr_self_heal_t *sh = NULL; + afr_local_t *local = NULL; + + priv = this->private; + expunge_local = expunge_frame->local; + expunge_sh = &expunge_local->self_heal; + frame = expunge_sh->sh_frame; + active_src = (long) cookie; + local = frame->local; + sh = &local->self_heal; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_ERROR, + "lookup of %s on %s failed (%s)", + expunge_local->loc.path, + priv->children[active_src]->name, + strerror (op_errno)); + goto out; + } + + afr_sh_entry_expunge_remove (expunge_frame, this, active_src, buf, + postparent); + + return 0; out: - AFR_STACK_DESTROY (expunge_frame); - afr_sh_entry_expunge_entry_done (frame, this, active_src); + AFR_STACK_DESTROY (expunge_frame); + sh->expunge_done (frame, this, active_src, op_ret, op_errno); - return 0; + return 0; } int afr_sh_entry_expunge_purge (call_frame_t *expunge_frame, xlator_t *this, - int active_src) + int active_src) { - afr_private_t *priv = NULL; - afr_local_t *expunge_local = NULL; - - priv = this->private; - expunge_local = expunge_frame->local; - - gf_log (this->name, GF_LOG_TRACE, - "looking up %s on %s", - expunge_local->loc.path, priv->children[active_src]->name); - - STACK_WIND_COOKIE (expunge_frame, afr_sh_entry_expunge_lookup_cbk, - (void *) (long) active_src, - priv->children[active_src], - priv->children[active_src]->fops->lookup, - &expunge_local->loc, 0); - - return 0; -} + afr_private_t *priv = NULL; + afr_local_t *expunge_local = NULL; + priv = this->private; + expunge_local = expunge_frame->local; + + gf_log (this->name, GF_LOG_TRACE, + "looking up %s on %s", + expunge_local->loc.path, priv->children[active_src]->name); + + STACK_WIND_COOKIE (expunge_frame, afr_sh_entry_expunge_lookup_cbk, + (void *) (long) active_src, + priv->children[active_src], + priv->children[active_src]->fops->lookup, + &expunge_local->loc, NULL); + + return 0; +} int afr_sh_entry_expunge_entry_cbk (call_frame_t *expunge_frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf, dict_t *x) + xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *buf, dict_t *x, + struct iatt *postparent) { - afr_private_t *priv = NULL; - afr_local_t *expunge_local = NULL; - afr_self_heal_t *expunge_sh = NULL; - int source = 0; - call_frame_t *frame = NULL; - int active_src = 0; - - - priv = this->private; - expunge_local = expunge_frame->local; - expunge_sh = &expunge_local->self_heal; - frame = expunge_sh->sh_frame; - active_src = expunge_sh->active_source; - source = (long) cookie; - - if (op_ret == -1 && op_errno == ENOENT) { - - gf_log (this->name, GF_LOG_TRACE, - "missing entry %s on %s", - expunge_local->loc.path, - priv->children[source]->name); - - afr_sh_entry_expunge_purge (expunge_frame, this, active_src); - - return 0; - } - - if (op_ret == 0) { - gf_log (this->name, GF_LOG_TRACE, - "%s exists under %s", - expunge_local->loc.path, - priv->children[source]->name); - } else { - gf_log (this->name, GF_LOG_TRACE, - "looking up %s under %s failed (%s)", - expunge_local->loc.path, - priv->children[source]->name, - strerror (op_errno)); - } - - AFR_STACK_DESTROY (expunge_frame); - afr_sh_entry_expunge_entry_done (frame, this, active_src); - - return 0; + afr_private_t *priv = NULL; + afr_local_t *expunge_local = NULL; + afr_self_heal_t *expunge_sh = NULL; + int source = 0; + call_frame_t *frame = NULL; + int active_src = 0; + int need_expunge = 0; + afr_self_heal_t *sh = NULL; + afr_local_t *local = NULL; + + priv = this->private; + expunge_local = expunge_frame->local; + expunge_sh = &expunge_local->self_heal; + frame = expunge_sh->sh_frame; + active_src = expunge_sh->active_source; + source = (long) cookie; + local = frame->local; + sh = &local->self_heal; + + if (op_ret == -1 && op_errno == ENOENT) + need_expunge = 1; + else if (op_ret == -1) + goto out; + + if (!uuid_is_null (expunge_sh->entrybuf.ia_gfid) && + !uuid_is_null (buf->ia_gfid) && + (uuid_compare (expunge_sh->entrybuf.ia_gfid, buf->ia_gfid) != 0)) { + char uuidbuf1[64]; + char uuidbuf2[64]; + gf_log (this->name, GF_LOG_DEBUG, + "entry %s found on %s with mismatching gfid (%s/%s)", + expunge_local->loc.path, + priv->children[source]->name, + uuid_utoa_r (expunge_sh->entrybuf.ia_gfid, uuidbuf1), + uuid_utoa_r (buf->ia_gfid, uuidbuf2)); + need_expunge = 1; + } + + if (need_expunge) { + gf_log (this->name, GF_LOG_INFO, + "Entry %s is missing on %s and deleting from " + "replica's other bricks", + expunge_local->loc.path, + priv->children[source]->name); + + if (postparent) + expunge_sh->parentbuf = *postparent; + + afr_sh_entry_expunge_purge (expunge_frame, this, active_src); + + return 0; + } + +out: + if (op_ret == 0) { + gf_log (this->name, GF_LOG_TRACE, + "%s exists under %s", + expunge_local->loc.path, + priv->children[source]->name); + } else { + gf_log (this->name, GF_LOG_INFO, + "looking up %s under %s failed (%s)", + expunge_local->loc.path, + priv->children[source]->name, + strerror (op_errno)); + } + + AFR_STACK_DESTROY (expunge_frame); + sh->expunge_done (frame, this, active_src, op_ret, op_errno); + + return 0; } +static gf_boolean_t +can_skip_entry_self_heal (char *name, loc_t *parent_loc) +{ + if (strcmp (name, ".") == 0) { + return _gf_true; + } else if (strcmp (name, "..") == 0) { + return _gf_true; + } else if (loc_is_root (parent_loc) && + (strcmp (name, GF_REPLICATE_TRASH_DIR) == 0)) { + return _gf_true; + } + return _gf_false; +} int afr_sh_entry_expunge_entry (call_frame_t *frame, xlator_t *this, - char *name) + gf_dirent_t *entry) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int ret = -1; - call_frame_t *expunge_frame = NULL; - afr_local_t *expunge_local = NULL; - afr_self_heal_t *expunge_sh = NULL; - int active_src = 0; - int source = 0; - int op_errno = 0; - - priv = this->private; - local = frame->local; - sh = &local->self_heal; - - active_src = sh->active_source; - source = sh->source; - - if ((strcmp (name, ".") == 0) - || (strcmp (name, "..") == 0)) { - gf_log (this->name, GF_LOG_TRACE, - "skipping inspection of %s under %s", - name, local->loc.path); - goto out; - } - - gf_log (this->name, GF_LOG_TRACE, - "inspecting existance of %s under %s", - name, local->loc.path); - - expunge_frame = copy_frame (frame); - if (!expunge_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } - - ALLOC_OR_GOTO (expunge_local, afr_local_t, out); - - expunge_frame->local = expunge_local; - expunge_sh = &expunge_local->self_heal; - expunge_sh->sh_frame = frame; - expunge_sh->active_source = active_src; - - ret = build_child_loc (this, &expunge_local->loc, &local->loc, name); - if (ret != 0) { - goto out; - } - - gf_log (this->name, GF_LOG_TRACE, - "looking up %s on %s", expunge_local->loc.path, - priv->children[source]->name); - - STACK_WIND_COOKIE (expunge_frame, - afr_sh_entry_expunge_entry_cbk, - (void *) (long) source, - priv->children[source], - priv->children[source]->fops->lookup, - &expunge_local->loc, 0); - - ret = 0; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int ret = -1; + call_frame_t *expunge_frame = NULL; + afr_local_t *expunge_local = NULL; + afr_self_heal_t *expunge_sh = NULL; + int active_src = 0; + int source = 0; + int op_errno = 0; + char *name = NULL; + int op_ret = -1; + + priv = this->private; + local = frame->local; + sh = &local->self_heal; + + active_src = sh->active_source; + source = sh->source; + sh->expunge_done = afr_sh_entry_expunge_entry_done; + + name = entry->d_name; + if (can_skip_entry_self_heal (name, &local->loc)) { + op_ret = 0; + goto out; + } + + gf_log (this->name, GF_LOG_TRACE, + "inspecting existence of %s under %s", + name, local->loc.path); + + expunge_frame = copy_frame (frame); + if (!expunge_frame) { + op_errno = ENOMEM; + goto out; + } + + AFR_LOCAL_ALLOC_OR_GOTO (expunge_local, out); + + expunge_frame->local = expunge_local; + expunge_sh = &expunge_local->self_heal; + expunge_sh->sh_frame = frame; + expunge_sh->active_source = active_src; + expunge_sh->entrybuf = entry->d_stat; + loc_copy (&expunge_sh->parent_loc, &local->loc); + + ret = afr_build_child_loc (this, &expunge_local->loc, &local->loc, + name); + if (ret != 0) { + op_errno = EINVAL; + goto out; + } + + gf_log (this->name, GF_LOG_TRACE, + "looking up %s on %s", expunge_local->loc.path, + priv->children[source]->name); + + STACK_WIND_COOKIE (expunge_frame, + afr_sh_entry_expunge_entry_cbk, + (void *) (long) source, + priv->children[source], + priv->children[source]->fops->lookup, + &expunge_local->loc, NULL); + + ret = 0; out: - if (ret == -1) - afr_sh_entry_expunge_entry_done (frame, this, active_src); + if (ret == -1) + sh->expunge_done (frame, this, active_src, op_ret, op_errno); - return 0; + return 0; } int afr_sh_entry_expunge_readdir_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - gf_dirent_t *entries) + xlator_t *this, + int32_t op_ret, int32_t op_errno, + gf_dirent_t *entries, dict_t *xdata) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - gf_dirent_t *entry = NULL; - off_t last_offset = 0; - int active_src = 0; - int entry_count = 0; - - priv = this->private; - local = frame->local; - sh = &local->self_heal; - - active_src = sh->active_source; - - if (op_ret <= 0) { - if (op_ret < 0) { - gf_log (this->name, GF_LOG_DEBUG, - "readdir of %s on subvolume %s failed (%s)", - local->loc.path, - priv->children[active_src]->name, - strerror (op_errno)); - } else { - gf_log (this->name, GF_LOG_TRACE, - "readdir of %s on subvolume %s complete", - local->loc.path, - priv->children[active_src]->name); - } - - afr_sh_entry_expunge_all (frame, this); - return 0; - } - - list_for_each_entry (entry, &entries->list, list) { - last_offset = entry->d_off; - entry_count++; - } - - gf_log (this->name, GF_LOG_TRACE, - "readdir'ed %d entries from %s", - entry_count, priv->children[active_src]->name); - - sh->offset = last_offset; - local->call_count = entry_count; - - list_for_each_entry (entry, &entries->list, list) { - afr_sh_entry_expunge_entry (frame, this, entry->d_name); - } - - return 0; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + gf_dirent_t *entry = NULL; + off_t last_offset = 0; + int active_src = 0; + int entry_count = 0; + + priv = this->private; + local = frame->local; + sh = &local->self_heal; + + active_src = sh->active_source; + + if (op_ret <= 0) { + if (op_ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "readdir of %s on subvolume %s failed (%s)", + local->loc.path, + priv->children[active_src]->name, + strerror (op_errno)); + } else { + gf_log (this->name, GF_LOG_TRACE, + "readdir of %s on subvolume %s complete", + local->loc.path, + priv->children[active_src]->name); + } + + afr_sh_entry_expunge_all (frame, this); + return 0; + } + + list_for_each_entry (entry, &entries->list, list) { + last_offset = entry->d_off; + entry_count++; + } + + gf_log (this->name, GF_LOG_TRACE, + "readdir'ed %d entries from %s", + entry_count, priv->children[active_src]->name); + + sh->offset = last_offset; + local->call_count = entry_count; + + list_for_each_entry (entry, &entries->list, list) { + afr_sh_entry_expunge_entry (frame, this, entry); + } + + return 0; } int afr_sh_entry_expunge_subvol (call_frame_t *frame, xlator_t *this, - int active_src) + int active_src) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - priv = this->private; - local = frame->local; - sh = &local->self_heal; + priv = this->private; + local = frame->local; + sh = &local->self_heal; - STACK_WIND (frame, afr_sh_entry_expunge_readdir_cbk, - priv->children[active_src], - priv->children[active_src]->fops->readdir, - sh->healing_fd, sh->block_size, sh->offset); + STACK_WIND (frame, afr_sh_entry_expunge_readdir_cbk, + priv->children[active_src], + priv->children[active_src]->fops->readdirp, + sh->healing_fd, sh->block_size, sh->offset, NULL); - return 0; + return 0; } int afr_sh_entry_expunge_all (call_frame_t *frame, xlator_t *this) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int active_src = -1; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int active_src = -1; - priv = this->private; - local = frame->local; - sh = &local->self_heal; + priv = this->private; + local = frame->local; + sh = &local->self_heal; - sh->offset = 0; + sh->offset = 0; - if (sh->source == -1) { - gf_log (this->name, GF_LOG_TRACE, - "no active sources for %s to expunge entries", - local->loc.path); - goto out; - } + if (sh->source == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "no active sources for %s to expunge entries", + local->loc.path); + goto out; + } - active_src = next_active_sink (frame, this, sh->active_source); - sh->active_source = active_src; + active_src = next_active_sink (frame, this, sh->active_source); + sh->active_source = active_src; - if (sh->op_failed) { - goto out; - } + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + goto out; + } - if (active_src == -1) { - /* completed creating missing files on all subvolumes */ - goto out; - } + if (active_src == -1) { + /* completed creating missing files on all subvolumes */ + goto out; + } - gf_log (this->name, GF_LOG_TRACE, - "expunging entries of %s on %s to other sinks", - local->loc.path, priv->children[active_src]->name); + gf_log (this->name, GF_LOG_TRACE, + "expunging entries of %s on %s to other sinks", + local->loc.path, priv->children[active_src]->name); - afr_sh_entry_expunge_subvol (frame, this, active_src); + afr_sh_entry_expunge_subvol (frame, this, active_src); - return 0; + return 0; out: - afr_sh_entry_erase_pending (frame, this); - return 0; + afr_sh_entry_impunge_all (frame, this); + return 0; } int -afr_sh_entry_impunge_all (call_frame_t *frame, xlator_t *this); - -int -afr_sh_entry_impunge_subvol (call_frame_t *frame, xlator_t *this, - int active_src); - -int afr_sh_entry_impunge_entry_done (call_frame_t *frame, xlator_t *this, - int active_src) + int32_t op_ret, int32_t op_errno) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int call_count = 0; + int call_count = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - priv = this->private; - local = frame->local; - sh = &local->self_heal; + local = frame->local; + sh = &local->self_heal; + if (op_ret < 0) + sh->entries_skipped = _gf_true; + call_count = afr_frame_return (frame); + if (call_count == 0) + afr_sh_entry_impunge_subvol (frame, this); - LOCK (&frame->lock); - { - } - UNLOCK (&frame->lock); + return 0; +} - call_count = afr_frame_return (frame); +void +afr_sh_entry_call_impunge_done (call_frame_t *impunge_frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + afr_local_t *impunge_local = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_self_heal_t *impunge_sh = NULL; + call_frame_t *frame = NULL; - if (call_count == 0) - afr_sh_entry_impunge_subvol (frame, this, active_src); + AFR_INIT_SH_FRAME_VALS (impunge_frame, impunge_local, impunge_sh, + frame, local, sh); - return 0; + AFR_STACK_DESTROY (impunge_frame); + sh->impunge_done (frame, this, op_ret, op_errno); } - int -afr_sh_entry_impunge_utimens_cbk (call_frame_t *impunge_frame, void *cookie, - xlator_t *this, int32_t op_ret, - int32_t op_errno, struct stat *stbuf) +afr_sh_entry_impunge_setattr_cbk (call_frame_t *impunge_frame, void *cookie, + xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *preop, struct iatt *postop, + dict_t *xdata) { - int call_count = 0; - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_self_heal_t *impunge_sh = NULL; - call_frame_t *frame = NULL; - int active_src = 0; - int child_index = 0; - - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; - frame = impunge_sh->sh_frame; - local = frame->local; - sh = &local->self_heal; - active_src = sh->active_source; - child_index = (long) cookie; - - if (op_ret == 0) { - gf_log (this->name, GF_LOG_TRACE, - "utimes set for %s on %s", - impunge_local->loc.path, - priv->children[child_index]->name); - } else { - gf_log (this->name, GF_LOG_DEBUG, - "setting utimes of %s on %s failed (%s)", - impunge_local->loc.path, - priv->children[child_index]->name, - strerror (op_errno)); - } - - LOCK (&impunge_frame->lock); - { - call_count = --impunge_local->call_count; - } - UNLOCK (&impunge_frame->lock); - - if (call_count == 0) { - AFR_STACK_DESTROY (impunge_frame); - afr_sh_entry_impunge_entry_done (frame, this, active_src); - } - - return 0; -} + int call_count = 0; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + int child_index = 0; + + priv = this->private; + impunge_local = impunge_frame->local; + child_index = (long) cookie; + + if (op_ret == 0) { + gf_log (this->name, GF_LOG_DEBUG, + "setattr done for %s on %s", + impunge_local->loc.path, + priv->children[child_index]->name); + } else { + gf_log (this->name, GF_LOG_INFO, + "setattr (%s) on %s failed (%s)", + impunge_local->loc.path, + priv->children[child_index]->name, + strerror (op_errno)); + } + call_count = afr_frame_return (impunge_frame); + if (call_count == 0) { + afr_sh_entry_call_impunge_done (impunge_frame, this, + 0, op_errno); + } + + return 0; +} int -afr_sh_entry_impunge_chown_cbk (call_frame_t *impunge_frame, void *cookie, - xlator_t *this, int32_t op_ret, - int32_t op_errno, struct stat *stbuf) +afr_sh_entry_impunge_parent_setattr_cbk (call_frame_t *setattr_frame, + void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *preop, struct iatt *postop, + dict_t *xdata) { - int call_count = 0; - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; - call_frame_t *frame = NULL; - int active_src = 0; - int child_index = 0; - struct timespec ts[2]; - - - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; - frame = impunge_sh->sh_frame; - child_index = (long) cookie; - - if (op_ret == 0) { - gf_log (this->name, GF_LOG_TRACE, - "ownership of %s on %s changed", - impunge_local->loc.path, - priv->children[child_index]->name); - } else { - gf_log (this->name, GF_LOG_DEBUG, - "setting ownership of %s on %s failed (%s)", - impunge_local->loc.path, - priv->children[child_index]->name, - strerror (op_errno)); - goto out; - } - -#ifdef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC - ts[0] = impunge_local->cont.lookup.buf.st_atim; - ts[1] = impunge_local->cont.lookup.buf.st_mtim; -#elif HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC - ts[0] = impunge_local->cont.lookup.buf.st_atimespec; - ts[1] = impunge_local->cont.lookup.buf.st_mtimespec; -#else - ts[0].tv_sec = impunge_local->cont.lookup.buf.st_atime; - ts[1].tv_sec = impunge_local->cont.lookup.buf.st_mtime; -#endif - STACK_WIND_COOKIE (impunge_frame, - afr_sh_entry_impunge_utimens_cbk, - (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->utimens, - &impunge_local->loc, ts); + int call_count = 0; + afr_local_t *setattr_local = NULL; + + setattr_local = setattr_frame->local; + if (op_ret != 0) { + gf_log (this->name, GF_LOG_INFO, + "setattr on parent directory (%s) failed: %s", + setattr_local->loc.path, strerror (op_errno)); + } - return 0; + call_count = afr_frame_return (setattr_frame); + if (call_count == 0) + AFR_STACK_DESTROY (setattr_frame); + return 0; +} +int +afr_sh_entry_impunge_setattr (call_frame_t *impunge_frame, xlator_t *this) +{ + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + afr_local_t *setattr_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + call_frame_t *setattr_frame = NULL; + int32_t valid = 0; + int32_t op_errno = 0; + int child_index = 0; + int call_count = 0; + int i = 0; + + priv = this->private; + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + + gf_log (this->name, GF_LOG_DEBUG, + "setting ownership of %s on %s to %d/%d", + impunge_local->loc.path, + priv->children[child_index]->name, + impunge_sh->entrybuf.ia_uid, + impunge_sh->entrybuf.ia_gid); + + setattr_frame = copy_frame (impunge_frame); + if (!setattr_frame) { + op_errno = ENOMEM; + goto out; + } + AFR_LOCAL_ALLOC_OR_GOTO (setattr_frame->local, out); + setattr_local = setattr_frame->local; + call_count = afr_errno_count (NULL, impunge_sh->child_errno, + priv->child_count, 0); + loc_copy (&setattr_local->loc, &impunge_sh->parent_loc); + impunge_local->call_count = call_count; + setattr_local->call_count = call_count; + for (i = 0; i < priv->child_count; i++) { + if (impunge_sh->child_errno[i]) + continue; + valid = GF_SET_ATTR_ATIME | GF_SET_ATTR_MTIME; + STACK_WIND_COOKIE (setattr_frame, + afr_sh_entry_impunge_parent_setattr_cbk, + (void *) (long) i, priv->children[i], + priv->children[i]->fops->setattr, + &setattr_local->loc, + &impunge_sh->parentbuf, valid, NULL); + + valid = GF_SET_ATTR_UID | GF_SET_ATTR_GID | + GF_SET_ATTR_ATIME | GF_SET_ATTR_MTIME; + STACK_WIND_COOKIE (impunge_frame, + afr_sh_entry_impunge_setattr_cbk, + (void *) (long) i, priv->children[i], + priv->children[i]->fops->setattr, + &impunge_local->loc, + &impunge_sh->entrybuf, valid, NULL); + call_count--; + } + GF_ASSERT (!call_count); + return 0; out: - LOCK (&impunge_frame->lock); - { - call_count = --impunge_local->call_count; - } - UNLOCK (&impunge_frame->lock); - - if (call_count == 0) { - AFR_STACK_DESTROY (impunge_frame); - afr_sh_entry_impunge_entry_done (frame, this, active_src); - } - - return 0; + if (setattr_frame) + AFR_STACK_DESTROY (setattr_frame); + afr_sh_entry_call_impunge_done (impunge_frame, this, 0, op_errno); + return 0; } - int afr_sh_entry_impunge_xattrop_cbk (call_frame_t *impunge_frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, - dict_t *xattr) + dict_t *xattr, dict_t *xdata) { - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; - call_frame_t *frame = NULL; - int child_index = 0; - - - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; - frame = impunge_sh->sh_frame; - - child_index = (long) cookie; - - gf_log (this->name, GF_LOG_TRACE, - "setting ownership of %s on %s to %d/%d", - impunge_local->loc.path, - priv->children[child_index]->name, - impunge_local->cont.lookup.buf.st_uid, - impunge_local->cont.lookup.buf.st_gid); - - STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_chown_cbk, - (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->chown, - &impunge_local->loc, - impunge_local->cont.lookup.buf.st_uid, - impunge_local->cont.lookup.buf.st_gid); + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + int child_index = 0; + + priv = this->private; + impunge_local = impunge_frame->local; + + child_index = (long) cookie; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_INFO, + "%s: failed to perform xattrop on %s (%s)", + impunge_local->loc.path, + priv->children[child_index]->name, + strerror (op_errno)); + goto out; + } + + afr_sh_entry_impunge_setattr (impunge_frame, this); + return 0; +out: + afr_sh_entry_call_impunge_done (impunge_frame, this, + -1, op_errno); return 0; } - int -afr_sh_entry_impunge_newfile_cbk (call_frame_t *impunge_frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *stbuf) +afr_sh_entry_impunge_perform_xattrop (call_frame_t *impunge_frame, + xlator_t *this) { - int call_count = 0; - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; - call_frame_t *frame = NULL; - int active_src = 0; - int child_index = 0; - int pending_array[3] = {0, }; - dict_t *xattr = NULL; - int ret = 0; - int idx = 0; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; + int active_src = 0; + dict_t *xattr = NULL; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + int32_t op_errno = 0; + + priv = this->private; + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + active_src = impunge_sh->active_source; + + afr_prepare_new_entry_pending_matrix (impunge_local->pending, + afr_is_errno_unset, + impunge_sh->child_errno, + &impunge_sh->entrybuf, + priv->child_count); + xattr = dict_new (); + if (!xattr) { + op_errno = ENOMEM; + goto out; + } - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; - frame = impunge_sh->sh_frame; - local = frame->local; - sh = &local->self_heal; - active_src = sh->active_source; + afr_set_pending_dict (priv, xattr, impunge_local->pending, active_src, + LOCAL_LAST); - child_index = (long) cookie; + STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_xattrop_cbk, + (void *) (long) active_src, + priv->children[active_src], + priv->children[active_src]->fops->xattrop, + &impunge_local->loc, GF_XATTROP_ADD_ARRAY, xattr, NULL); - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "creation of %s on %s failed (%s)", - impunge_local->loc.path, - priv->children[child_index]->name, - strerror (op_errno)); - goto out; - } + if (xattr) + dict_unref (xattr); + return 0; +out: + afr_sh_entry_call_impunge_done (impunge_frame, this, + -1, op_errno); + return 0; +} - inode->st_mode = stbuf->st_mode; +int +afr_sh_entry_impunge_newfile_cbk (call_frame_t *impunge_frame, void *cookie, + xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + int call_count = 0; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + int child_index = 0; + + priv = this->private; + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + + child_index = (long) cookie; + + if (op_ret == -1) { + impunge_sh->child_errno[child_index] = op_errno; + gf_log (this->name, GF_LOG_ERROR, + "creation of %s on %s failed (%s)", + impunge_local->loc.path, + priv->children[child_index]->name, + strerror (op_errno)); + } else { + impunge_sh->child_errno[child_index] = 0; + } - xattr = get_new_dict (); - dict_ref (xattr); + call_count = afr_frame_return (impunge_frame); + if (call_count == 0) { + if (!afr_errno_count (NULL, impunge_sh->child_errno, + priv->child_count, 0)) { + // new_file creation failed every where + afr_sh_entry_call_impunge_done (impunge_frame, this, + -1, op_errno); + goto out; + } + afr_sh_entry_impunge_perform_xattrop (impunge_frame, this); + } +out: + return 0; +} - idx = afr_index_for_transaction_type (AFR_METADATA_TRANSACTION); - pending_array[idx] = hton32 (1); - if (S_ISDIR (stbuf->st_mode)) - idx = afr_index_for_transaction_type (AFR_ENTRY_TRANSACTION); - else - idx = afr_index_for_transaction_type (AFR_DATA_TRANSACTION); - pending_array[idx] = hton32 (1); +int +afr_sh_entry_impunge_hardlink_cbk (call_frame_t *impunge_frame, void *cookie, + xlator_t *this, int32_t op_ret, + int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + int call_count = 0; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + + if (IA_IFLNK == impunge_sh->entrybuf.ia_type) { + //For symlinks impunge is attempted un-conditionally + //So the file can already exist. + if ((op_ret < 0) && (op_errno == EEXIST)) + op_ret = 0; + } - ret = dict_set_static_bin (xattr, priv->pending_key[child_index], - pending_array, sizeof (pending_array)); + call_count = afr_frame_return (impunge_frame); + if (call_count == 0) + afr_sh_entry_call_impunge_done (impunge_frame, this, + op_ret, op_errno); - STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_xattrop_cbk, - (void *) (long) child_index, - priv->children[active_src], - priv->children[active_src]->fops->xattrop, - &impunge_local->loc, GF_XATTROP_ADD_ARRAY, xattr); + return 0; +} - dict_unref (xattr); +int +afr_sh_entry_impunge_hardlink (call_frame_t *impunge_frame, xlator_t *this, + int child_index) +{ + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + loc_t *loc = NULL; + struct iatt *buf = NULL; + loc_t oldloc = {0}; + + priv = this->private; + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + loc = &impunge_local->loc; + buf = &impunge_sh->entrybuf; + + oldloc.inode = inode_ref (loc->inode); + uuid_copy (oldloc.gfid, buf->ia_gfid); + gf_log (this->name, GF_LOG_DEBUG, "linking missing file %s on %s", + loc->path, priv->children[child_index]->name); + + STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_hardlink_cbk, + (void *) (long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->link, + &oldloc, loc, NULL); + loc_wipe (&oldloc); - return 0; + return 0; +} -out: - LOCK (&impunge_frame->lock); - { - call_count = --impunge_local->call_count; - } - UNLOCK (&impunge_frame->lock); - - if (call_count == 0) { - AFR_STACK_DESTROY (impunge_frame); - afr_sh_entry_impunge_entry_done (frame, this, active_src); - } - - return 0; +int +afr_sh_nameless_lookup_cbk (call_frame_t *impunge_frame, void *cookie, + xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, dict_t *xattr, + struct iatt *postparent) +{ + if (op_ret < 0) { + afr_sh_entry_impunge_create_file (impunge_frame, this, + (long)cookie); + } else { + afr_sh_entry_impunge_hardlink (impunge_frame, this, + (long)cookie); + } + return 0; } +int +afr_sh_entry_impunge_check_hardlink (call_frame_t *impunge_frame, + xlator_t *this, + int child_index, struct iatt *stbuf) +{ + afr_private_t *priv = NULL; + call_frame_t *frame = NULL; + afr_local_t *impunge_local = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *impunge_sh = NULL; + afr_self_heal_t *sh = NULL; + loc_t *loc = NULL; + dict_t *xattr_req = NULL; + loc_t oldloc = {0}; + int ret = -1; + + priv = this->private; + AFR_INIT_SH_FRAME_VALS (impunge_frame, impunge_local, impunge_sh, + frame, local, sh); + loc = &impunge_local->loc; + + xattr_req = dict_new (); + if (!xattr_req) + goto out; + oldloc.inode = inode_ref (loc->inode); + uuid_copy (oldloc.gfid, stbuf->ia_gfid); + + STACK_WIND_COOKIE (impunge_frame, afr_sh_nameless_lookup_cbk, + (void *) (long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->lookup, + &oldloc, xattr_req); + ret = 0; +out: + if (xattr_req) + dict_unref (xattr_req); + loc_wipe (&oldloc); + if (ret) + sh->impunge_done (frame, this, -1, ENOMEM); + return 0; +} int afr_sh_entry_impunge_mknod (call_frame_t *impunge_frame, xlator_t *this, - int child_index, struct stat *stbuf) + int child_index, struct iatt *stbuf) { - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; - - - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + dict_t *dict = NULL; + int ret = 0; + + priv = this->private; + impunge_local = impunge_frame->local; + + gf_log (this->name, GF_LOG_DEBUG, + "creating missing file %s on %s", + impunge_local->loc.path, + priv->children[child_index]->name); + + dict = dict_new (); + if (!dict) + gf_log (this->name, GF_LOG_ERROR, "Out of memory"); + + GF_ASSERT (!uuid_is_null (stbuf->ia_gfid)); + ret = afr_set_dict_gfid (dict, stbuf->ia_gfid); + if (ret) + gf_log (this->name, GF_LOG_INFO, "%s: gfid set failed", + impunge_local->loc.path); + + /* + * Reason for adding GLUSTERFS_INTERNAL_FOP_KEY : + * + * Problem: + * While a brick is down in a replica pair, lets say the user creates + * one file(file-A) and a hard link to that file(h-file-A). After the + * brick comes back up, entry self-heal is attempted on parent dir of + * these two files. As part of readdir in self-heal it reads both the + * entries file-A and h-file-A for both of them it does name less lookup + * to check if there are any hardlinks already present in the + * destination brick. It finds that there are no hard links already + * present for files file-A, h-file-A. Self-heal does mknods for both + * file-A and h-file-A. This leads to file-A and h-file-A not being + * hardlinks anymore. + * + * Fix: (More like shrinking of race-window, the race itself is still + * present in posix-mknod). + * If mknod comes with the presence of GLUSTERFS_INTERNAL_FOP_KEY then + * posix_mknod checks if there are already any gfid-links and does + * link() instead of mknod. There still can be a race where two + * posix_mknods same gfid see that + * gfid-link file is not present and proceeds with mknods and result in + * two different files with same gfid. + */ + ret = dict_set_str (dict, GLUSTERFS_INTERNAL_FOP_KEY, "yes"); + if (ret) + gf_log (this->name, GF_LOG_INFO, "%s: %s set failed", + impunge_local->loc.path, GLUSTERFS_INTERNAL_FOP_KEY); + + STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_newfile_cbk, + (void *) (long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->mknod, + &impunge_local->loc, + st_mode_from_ia (stbuf->ia_prot, stbuf->ia_type), + makedev (ia_major (stbuf->ia_rdev), + ia_minor (stbuf->ia_rdev)), 0, dict); + + if (dict) + dict_unref (dict); - gf_log (this->name, GF_LOG_DEBUG, - "creating missing file %s on %s", - impunge_local->loc.path, - priv->children[child_index]->name); - - STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_newfile_cbk, - (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->mknod, - &impunge_local->loc, - stbuf->st_mode, stbuf->st_rdev); - - return 0; + return 0; } int afr_sh_entry_impunge_mkdir (call_frame_t *impunge_frame, xlator_t *this, - int child_index, struct stat *stbuf) + int child_index, struct iatt *stbuf) { - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + dict_t *dict = NULL; + int ret = 0; - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; + priv = this->private; + impunge_local = impunge_frame->local; - gf_log (this->name, GF_LOG_DEBUG, - "creating missing directory %s on %s", - impunge_local->loc.path, - priv->children[child_index]->name); + dict = dict_new (); + if (!dict) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory"); + return 0; + } + + GF_ASSERT (!uuid_is_null (stbuf->ia_gfid)); + ret = afr_set_dict_gfid (dict, stbuf->ia_gfid); + if (ret) + gf_log (this->name, GF_LOG_INFO, "%s: gfid set failed", + impunge_local->loc.path); + + gf_log (this->name, GF_LOG_DEBUG, + "creating missing directory %s on %s", + impunge_local->loc.path, + priv->children[child_index]->name); + + STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_newfile_cbk, + (void *) (long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->mkdir, + &impunge_local->loc, + st_mode_from_ia (stbuf->ia_prot, stbuf->ia_type), + 0, dict); - STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_newfile_cbk, - (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->mkdir, - &impunge_local->loc, stbuf->st_mode); + if (dict) + dict_unref (dict); - return 0; + return 0; } int afr_sh_entry_impunge_symlink (call_frame_t *impunge_frame, xlator_t *this, - int child_index, const char *linkname) + int child_index, const char *linkname) { - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; - - - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; - - gf_log (this->name, GF_LOG_DEBUG, - "creating missing symlink %s -> %s on %s", - impunge_local->loc.path, linkname, - priv->children[child_index]->name); - - STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_newfile_cbk, - (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->symlink, - linkname, &impunge_local->loc); + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + dict_t *dict = NULL; + struct iatt *buf = NULL; + int ret = 0; + + priv = this->private; + impunge_local = impunge_frame->local; + + buf = &impunge_local->cont.dir_fop.buf; + + dict = dict_new (); + if (!dict) { + afr_sh_entry_call_impunge_done (impunge_frame, this, + -1, ENOMEM); + goto out; + } - return 0; + GF_ASSERT (!uuid_is_null (buf->ia_gfid)); + ret = afr_set_dict_gfid (dict, buf->ia_gfid); + if (ret) + gf_log (this->name, GF_LOG_INFO, + "%s: dict set gfid failed", + impunge_local->loc.path); + + gf_log (this->name, GF_LOG_DEBUG, + "creating missing symlink %s -> %s on %s", + impunge_local->loc.path, linkname, + priv->children[child_index]->name); + + STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_newfile_cbk, + (void *) (long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->symlink, + linkname, &impunge_local->loc, 0, dict); + + if (dict) + dict_unref (dict); +out: + return 0; } int -afr_sh_entry_impunge_readlink_cbk (call_frame_t *impunge_frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - const char *linkname) +afr_sh_entry_impunge_symlink_unlink_cbk (call_frame_t *impunge_frame, + void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; - int child_index = -1; - call_frame_t *frame = NULL; - int call_count = -1; - int active_src = -1; - - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; - frame = impunge_sh->sh_frame; - active_src = impunge_sh->active_source; - - child_index = (long) cookie; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "readlink of %s on %s failed (%s)", - impunge_local->loc.path, - priv->children[active_src]->name, - strerror (op_errno)); - goto out; - } - - afr_sh_entry_impunge_symlink (impunge_frame, this, child_index, - linkname); - return 0; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + int child_index = -1; + int call_count = -1; + + priv = this->private; + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + + child_index = (long) cookie; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_INFO, + "unlink of %s on %s failed (%s)", + impunge_local->loc.path, + priv->children[child_index]->name, + strerror (op_errno)); + goto out; + } + afr_sh_entry_impunge_symlink (impunge_frame, this, child_index, + impunge_sh->linkname); + + return 0; out: - LOCK (&impunge_frame->lock); - { - call_count = --impunge_local->call_count; - } - UNLOCK (&impunge_frame->lock); - - if (call_count == 0) { - AFR_STACK_DESTROY (impunge_frame); - afr_sh_entry_impunge_entry_done (frame, this, active_src); - } - - return 0; -} + LOCK (&impunge_frame->lock); + { + call_count = --impunge_local->call_count; + } + UNLOCK (&impunge_frame->lock); + if (call_count == 0) + afr_sh_entry_call_impunge_done (impunge_frame, this, + op_ret, op_errno); -int -afr_sh_entry_impunge_readlink (call_frame_t *impunge_frame, xlator_t *this, - int child_index, struct stat *stbuf) -{ - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; - int active_src = -1; - - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; - active_src = impunge_sh->active_source; - - STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_readlink_cbk, - (void *) (long) child_index, - priv->children[active_src], - priv->children[active_src]->fops->readlink, - &impunge_local->loc, 4096); - - return 0; + return 0; } int -afr_sh_entry_impunge_recreate_lookup_cbk (call_frame_t *impunge_frame, - void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf, - dict_t *xattr) +afr_sh_entry_impunge_symlink_unlink (call_frame_t *impunge_frame, xlator_t *this, + int child_index) { - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; - int active_src = 0; - int type = 0; - int child_index = 0; - call_frame_t *frame = NULL; - int call_count = 0; - - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; - frame = impunge_sh->sh_frame; - - child_index = (long) cookie; - - active_src = impunge_sh->active_source; - - if (op_ret != 0) { - gf_log (this->name, GF_LOG_TRACE, - "looking up %s on %s (for %s) failed (%s)", - impunge_local->loc.path, - priv->children[active_src]->name, - priv->children[child_index]->name, - strerror (op_errno)); - goto out; - } - - impunge_local->cont.lookup.buf = *buf; - type = (buf->st_mode & S_IFMT); - - switch (type) { - case S_IFSOCK: - case S_IFREG: - case S_IFBLK: - case S_IFCHR: - case S_IFIFO: - afr_sh_entry_impunge_mknod (impunge_frame, this, - child_index, buf); - break; - case S_IFLNK: - afr_sh_entry_impunge_readlink (impunge_frame, this, - child_index, buf); - break; - case S_IFDIR: - afr_sh_entry_impunge_mkdir (impunge_frame, this, - child_index, buf); - break; - default: - gf_log (this->name, GF_LOG_ERROR, - "%s has unknown file type on %s: 0%o", - impunge_local->loc.path, - priv->children[active_src]->name, type); - goto out; - break; - } - - return 0; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; -out: - LOCK (&impunge_frame->lock); - { - call_count = --impunge_local->call_count; - } - UNLOCK (&impunge_frame->lock); - - if (call_count == 0) { - AFR_STACK_DESTROY (impunge_frame); - afr_sh_entry_impunge_entry_done (frame, this, active_src); - } - - return 0; + priv = this->private; + impunge_local = impunge_frame->local; + + gf_log (this->name, GF_LOG_DEBUG, + "unlinking symlink %s with wrong target on %s", + impunge_local->loc.path, + priv->children[child_index]->name); + + STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_symlink_unlink_cbk, + (void *) (long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->unlink, + &impunge_local->loc, 0, NULL); + + return 0; } int -afr_sh_entry_impunge_recreate (call_frame_t *impunge_frame, xlator_t *this, - int child_index) +afr_sh_entry_impunge_readlink_sink_cbk (call_frame_t *impunge_frame, void *cookie, + xlator_t *this, + int32_t op_ret, int32_t op_errno, + const char *linkname, struct iatt *sbuf, dict_t *xdata) { - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; - int active_src = 0; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + int child_index = -1; + int call_count = -1; + int active_src = -1; + + priv = this->private; + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + active_src = impunge_sh->active_source; + + child_index = (long) cookie; + + if ((op_ret == -1) && (op_errno != ENOENT)) { + gf_log (this->name, GF_LOG_INFO, + "readlink of %s on %s failed (%s)", + impunge_local->loc.path, + priv->children[active_src]->name, + strerror (op_errno)); + goto out; + } + /* symlink doesn't exist on the sink */ - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; + if ((op_ret == -1) && (op_errno == ENOENT)) { + afr_sh_entry_impunge_symlink (impunge_frame, this, + child_index, impunge_sh->linkname); + return 0; + } + + + /* symlink exists on the sink, so check if targets match */ + + if (strcmp (linkname, impunge_sh->linkname) == 0) { + /* targets match, nothing to do */ - active_src = impunge_sh->active_source; + goto out; + } else { + /* + * Hah! Sneaky wolf in sheep's clothing! + */ + afr_sh_entry_impunge_symlink_unlink (impunge_frame, this, + child_index); + return 0; + } + +out: + LOCK (&impunge_frame->lock); + { + call_count = --impunge_local->call_count; + } + UNLOCK (&impunge_frame->lock); - STACK_WIND_COOKIE (impunge_frame, - afr_sh_entry_impunge_recreate_lookup_cbk, - (void *) (long) child_index, - priv->children[active_src], - priv->children[active_src]->fops->lookup, - &impunge_local->loc, 0); + if (call_count == 0) + afr_sh_entry_call_impunge_done (impunge_frame, this, + op_ret, op_errno); - return 0; + return 0; } int -afr_sh_entry_impunge_entry_cbk (call_frame_t *impunge_frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf, dict_t *x) +afr_sh_entry_impunge_readlink_sink (call_frame_t *impunge_frame, xlator_t *this, + int child_index) { - afr_private_t *priv = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; - int call_count = 0; - int child_index = 0; - call_frame_t *frame = NULL; - int active_src = 0; - - priv = this->private; - impunge_local = impunge_frame->local; - impunge_sh = &impunge_local->self_heal; - frame = impunge_sh->sh_frame; - child_index = (long) cookie; - active_src = impunge_sh->active_source; - - if (op_ret == -1 && op_errno == ENOENT) { - /* decrease call_count in recreate-callback */ - gf_log (this->name, GF_LOG_TRACE, - "missing entry %s on %s", - impunge_local->loc.path, - priv->children[child_index]->name); - - afr_sh_entry_impunge_recreate (impunge_frame, this, - child_index); - return 0; - } - - if (op_ret == 0) { - gf_log (this->name, GF_LOG_TRACE, - "%s exists under %s", - impunge_local->loc.path, - priv->children[child_index]->name); - } else { - gf_log (this->name, GF_LOG_TRACE, - "looking up %s under %s failed (%s)", - impunge_local->loc.path, - priv->children[child_index]->name, - strerror (op_errno)); - } - - LOCK (&impunge_frame->lock); - { - call_count = --impunge_local->call_count; - } - UNLOCK (&impunge_frame->lock); - - if (call_count == 0) { - AFR_STACK_DESTROY (impunge_frame); - afr_sh_entry_impunge_entry_done (frame, this, active_src); - } - - return 0; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + + priv = this->private; + impunge_local = impunge_frame->local; + + gf_log (this->name, GF_LOG_DEBUG, + "checking symlink target of %s on %s", + impunge_local->loc.path, priv->children[child_index]->name); + + STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_readlink_sink_cbk, + (void *) (long) child_index, + priv->children[child_index], + priv->children[child_index]->fops->readlink, + &impunge_local->loc, 4096, NULL); + + return 0; } int -afr_sh_entry_impunge_entry (call_frame_t *frame, xlator_t *this, - char *name) +afr_sh_entry_impunge_readlink_cbk (call_frame_t *impunge_frame, void *cookie, + xlator_t *this, + int32_t op_ret, int32_t op_errno, + const char *linkname, struct iatt *sbuf, dict_t *xdata) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int ret = -1; - call_frame_t *impunge_frame = NULL; - afr_local_t *impunge_local = NULL; - afr_self_heal_t *impunge_sh = NULL; - int active_src = 0; - int i = 0; - int call_count = 0; - int op_errno = 0; - - priv = this->private; - local = frame->local; - sh = &local->self_heal; - - active_src = sh->active_source; - - if ((strcmp (name, ".") == 0) - || (strcmp (name, "..") == 0)) { - gf_log (this->name, GF_LOG_TRACE, - "skipping inspection of %s under %s", - name, local->loc.path); - goto out; - } - - gf_log (this->name, GF_LOG_TRACE, - "inspecting existance of %s under %s", - name, local->loc.path); - - impunge_frame = copy_frame (frame); - if (!impunge_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; - } - - ALLOC_OR_GOTO (impunge_local, afr_local_t, out); - - impunge_frame->local = impunge_local; - impunge_sh = &impunge_local->self_heal; - impunge_sh->sh_frame = frame; - impunge_sh->active_source = active_src; - - ret = build_child_loc (this, &impunge_local->loc, &local->loc, name); - if (ret != 0) { - goto out; - } - - for (i = 0; i < priv->child_count; i++) { - if (i == active_src) - continue; - if (local->child_up[i] == 0) - continue; - if (sh->sources[i] == 1) - continue; - call_count++; - } - - impunge_local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (i == active_src) - continue; - if (local->child_up[i] == 0) - continue; - if (sh->sources[i] == 1) - continue; - - gf_log (this->name, GF_LOG_TRACE, - "looking up %s on %s", impunge_local->loc.path, - priv->children[i]->name); - - STACK_WIND_COOKIE (impunge_frame, - afr_sh_entry_impunge_entry_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->lookup, - &impunge_local->loc, 0); - - if (!--call_count) - break; - } - - ret = 0; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + int child_index = -1; + int call_count = -1; + int active_src = -1; + + priv = this->private; + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + active_src = impunge_sh->active_source; + + child_index = (long) cookie; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_INFO, + "readlink of %s on %s failed (%s)", + impunge_local->loc.path, + priv->children[active_src]->name, + strerror (op_errno)); + goto out; + } + + impunge_sh->linkname = gf_strdup (linkname); + afr_sh_entry_impunge_readlink_sink (impunge_frame, this, child_index); + + return 0; + out: - if (ret == -1) - afr_sh_entry_impunge_entry_done (frame, this, active_src); - - return 0; + LOCK (&impunge_frame->lock); + { + call_count = --impunge_local->call_count; + } + UNLOCK (&impunge_frame->lock); + + if (call_count == 0) + afr_sh_entry_call_impunge_done (impunge_frame, this, + op_ret, op_errno); + + return 0; } int -afr_sh_entry_impunge_readdir_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - gf_dirent_t *entries) +afr_sh_entry_impunge_readlink (call_frame_t *impunge_frame, xlator_t *this, + int child_index, struct iatt *stbuf) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - gf_dirent_t *entry = NULL; - off_t last_offset = 0; - int active_src = 0; - int entry_count = 0; - - priv = this->private; - local = frame->local; - sh = &local->self_heal; - - active_src = sh->active_source; - - if (op_ret <= 0) { - if (op_ret < 0) { - gf_log (this->name, GF_LOG_DEBUG, - "readdir of %s on subvolume %s failed (%s)", - local->loc.path, - priv->children[active_src]->name, - strerror (op_errno)); - } else { - gf_log (this->name, GF_LOG_TRACE, - "readdir of %s on subvolume %s complete", - local->loc.path, - priv->children[active_src]->name); - } - - afr_sh_entry_impunge_all (frame, this); - return 0; - } - - list_for_each_entry (entry, &entries->list, list) { - last_offset = entry->d_off; - entry_count++; - } - - gf_log (this->name, GF_LOG_TRACE, - "readdir'ed %d entries from %s", - entry_count, priv->children[active_src]->name); - - sh->offset = last_offset; - local->call_count = entry_count; - - list_for_each_entry (entry, &entries->list, list) { - afr_sh_entry_impunge_entry (frame, this, entry->d_name); - } - - return 0; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + int active_src = -1; + + priv = this->private; + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + active_src = impunge_sh->active_source; + impunge_local->cont.dir_fop.buf = *stbuf; + + STACK_WIND_COOKIE (impunge_frame, afr_sh_entry_impunge_readlink_cbk, + (void *) (long) child_index, + priv->children[active_src], + priv->children[active_src]->fops->readlink, + &impunge_local->loc, 4096, NULL); + + return 0; } - int -afr_sh_entry_impunge_subvol (call_frame_t *frame, xlator_t *this, - int active_src) +afr_sh_entry_impunge_create (call_frame_t *impunge_frame, xlator_t *this, + int child_index) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - - priv = this->private; - local = frame->local; - sh = &local->self_heal; - - STACK_WIND (frame, afr_sh_entry_impunge_readdir_cbk, - priv->children[active_src], - priv->children[active_src]->fops->readdir, - sh->healing_fd, sh->block_size, sh->offset); + call_frame_t *frame = NULL; + afr_local_t *impunge_local = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *impunge_sh = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + ia_type_t type = IA_INVAL; + int active_src = 0; + struct iatt *buf = NULL; + + AFR_INIT_SH_FRAME_VALS (impunge_frame, impunge_local, impunge_sh, + frame, local, sh); + active_src = impunge_sh->active_source; + afr_update_loc_gfids (&impunge_local->loc, &impunge_sh->entrybuf, + &impunge_sh->parentbuf); + + buf = &impunge_sh->entrybuf; + type = buf->ia_type; + + switch (type) { + case IA_IFSOCK: + case IA_IFREG: + case IA_IFBLK: + case IA_IFCHR: + case IA_IFIFO: + case IA_IFLNK: + afr_sh_entry_impunge_check_hardlink (impunge_frame, this, + child_index, buf); + break; + case IA_IFDIR: + afr_sh_entry_impunge_mkdir (impunge_frame, this, + child_index, buf); + break; + default: + gf_log (this->name, GF_LOG_ERROR, + "%s has unknown file type on %s: 0%o", + impunge_local->loc.path, + priv->children[active_src]->name, type); + sh->impunge_done (frame, this, -1, EINVAL); + break; + } - return 0; + return 0; } - int -afr_sh_entry_impunge_all (call_frame_t *frame, xlator_t *this) +afr_sh_entry_impunge_create_file (call_frame_t *impunge_frame, xlator_t *this, + int child_index) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int active_src = -1; + call_frame_t *frame = NULL; + afr_local_t *impunge_local = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *impunge_sh = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + ia_type_t type = IA_INVAL; + int active_src = 0; + struct iatt *buf = NULL; + + AFR_INIT_SH_FRAME_VALS (impunge_frame, impunge_local, impunge_sh, + frame, local, sh); + active_src = impunge_sh->active_source; + buf = &impunge_sh->entrybuf; + type = buf->ia_type; + + switch (type) { + case IA_IFSOCK: + case IA_IFREG: + case IA_IFBLK: + case IA_IFCHR: + case IA_IFIFO: + afr_sh_entry_impunge_mknod (impunge_frame, this, + child_index, buf); + break; + case IA_IFLNK: + afr_sh_entry_impunge_readlink (impunge_frame, this, + child_index, buf); + break; + default: + gf_log (this->name, GF_LOG_ERROR, + "%s has unknown file type on %s: 0%o", + impunge_local->loc.path, + priv->children[active_src]->name, type); + sh->impunge_done (frame, this, -1, EINVAL); + break; + } - priv = this->private; - local = frame->local; - sh = &local->self_heal; + return 0; +} - sh->offset = 0; +gf_boolean_t +afr_sh_need_recreate (afr_self_heal_t *impunge_sh, unsigned int child, + unsigned int child_count) +{ + gf_boolean_t recreate = _gf_false; - active_src = next_active_source (frame, this, sh->active_source); - sh->active_source = active_src; + GF_ASSERT (impunge_sh->child_errno); - if (sh->op_failed) { - afr_sh_entry_finish (frame, this); - return 0; - } + if (child == impunge_sh->active_source) + goto out; - if (active_src == -1) { - /* completed creating missing files on all subvolumes */ - afr_sh_entry_expunge_all (frame, this); - return 0; - } + if (IA_IFLNK == impunge_sh->entrybuf.ia_type) { + recreate = _gf_true; + goto out; + } + + if (impunge_sh->child_errno[child] == ENOENT) + recreate = _gf_true; +out: + return recreate; +} - gf_log (this->name, GF_LOG_TRACE, - "impunging entries of %s on %s to other sinks", - local->loc.path, priv->children[active_src]->name); +unsigned int +afr_sh_recreate_count (afr_self_heal_t *impunge_sh, int *sources, + unsigned int child_count) +{ + int count = 0; + int i = 0; - afr_sh_entry_impunge_subvol (frame, this, active_src); + for (i = 0; i < child_count; i++) { + if (afr_sh_need_recreate (impunge_sh, i, child_count)) + count++; + } - return 0; + return count; } - int -afr_sh_entry_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, fd_t *fd) +afr_sh_entry_call_impunge_recreate (call_frame_t *impunge_frame, + xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; - int child_index = 0; - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - child_index = (long) cookie; - - /* TODO: some of the open's might fail. - In that case, modify cleanup fn to send flush on those - fd's which are already open */ - - LOCK (&frame->lock); - { - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "opendir of %s failed on child %s (%s)", - local->loc.path, - priv->children[child_index]->name, - strerror (op_errno)); - sh->op_failed = 1; - } - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) { - if (sh->op_failed) { - afr_sh_entry_finish (frame, this); - return 0; - } - gf_log (this->name, GF_LOG_TRACE, - "fd for %s opened, commencing sync", - local->loc.path); - - sh->active_source = -1; - afr_sh_entry_impunge_all (frame, this); - } - - return 0; + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + call_frame_t *frame = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + unsigned int recreate_count = 0; + int i = 0; + int active_src = 0; + + priv = this->private; + AFR_INIT_SH_FRAME_VALS (impunge_frame, impunge_local, impunge_sh, + frame, local, sh); + active_src = impunge_sh->active_source; + impunge_sh->entrybuf = impunge_sh->buf[active_src]; + impunge_sh->parentbuf = impunge_sh->parentbufs[active_src]; + recreate_count = afr_sh_recreate_count (impunge_sh, sh->sources, + priv->child_count); + if (!recreate_count) { + afr_sh_entry_call_impunge_done (impunge_frame, this, 0, 0); + goto out; + } + impunge_local->call_count = recreate_count; + for (i = 0; i < priv->child_count; i++) { + if (!impunge_local->child_up[i]) { + impunge_sh->child_errno[i] = ENOTCONN; + continue; + } + if (!afr_sh_need_recreate (impunge_sh, i, priv->child_count)) { + impunge_sh->child_errno[i] = EEXIST; + continue; + } + } + for (i = 0; i < priv->child_count; i++) { + if (!afr_sh_need_recreate (impunge_sh, i, priv->child_count)) + continue; + (void)afr_sh_entry_impunge_create (impunge_frame, this, i); + recreate_count--; + } + GF_ASSERT (!recreate_count); +out: + return 0; } +void +afr_sh_entry_common_lookup_done (call_frame_t *impunge_frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + afr_private_t *priv = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + call_frame_t *frame = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + unsigned int gfid_miss_count = 0; + unsigned int children_up_count = 0; + uuid_t gfid = {0}; + int active_src = 0; + + priv = this->private; + AFR_INIT_SH_FRAME_VALS (impunge_frame, impunge_local, impunge_sh, + frame, local, sh); + active_src = impunge_sh->active_source; + + if (op_ret < 0) + goto done; + if (impunge_sh->child_errno[active_src]) { + op_ret = -1; + op_errno = impunge_sh->child_errno[active_src]; + goto done; + } + + gfid_miss_count = afr_gfid_missing_count (this->name, + impunge_sh->success_children, + impunge_sh->buf, priv->child_count, + impunge_local->loc.path); + children_up_count = afr_up_children_count (impunge_local->child_up, + priv->child_count); + if ((gfid_miss_count == children_up_count) && + (children_up_count < priv->child_count)) { + op_ret = -1; + op_errno = ENODATA; + gf_log (this->name, GF_LOG_ERROR, "Not all children are up, " + "gfid should not be assigned in this state for %s", + impunge_local->loc.path); + goto done; + } + + if (gfid_miss_count) { + afr_update_gfid_from_iatts (gfid, impunge_sh->buf, + impunge_sh->success_children, + priv->child_count); + if (uuid_is_null (gfid)) { + sh->entries_skipped = _gf_true; + gf_log (this->name, GF_LOG_INFO, "%s: Skipping entry " + "self-heal because of gfid absence", + impunge_local->loc.path); + goto done; + } + afr_sh_common_lookup (impunge_frame, this, &impunge_local->loc, + afr_sh_entry_common_lookup_done, gfid, + AFR_LOOKUP_FAIL_CONFLICTS | + AFR_LOOKUP_FAIL_MISSING_GFIDS, + NULL); + } else { + afr_sh_entry_call_impunge_recreate (impunge_frame, this); + } + return; +done: + afr_sh_entry_call_impunge_done (impunge_frame, this, + op_ret, op_errno); + return; +} int -afr_sh_entry_open (call_frame_t *frame, xlator_t *this) +afr_sh_entry_impunge_entry (call_frame_t *frame, xlator_t *this, + gf_dirent_t *entry) { - int i = 0; - int call_count = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_self_heal_t *impunge_sh = NULL; + int ret = -1; + call_frame_t *impunge_frame = NULL; + afr_local_t *impunge_local = NULL; + int active_src = 0; + int op_errno = 0; + int op_ret = -1; + + local = frame->local; + sh = &local->self_heal; - int source = -1; - int *sources = NULL; + active_src = sh->active_source; + sh->impunge_done = afr_sh_entry_impunge_entry_done; - fd_t *fd = NULL; + if (can_skip_entry_self_heal (entry->d_name, &local->loc)) { + op_ret = 0; + goto out; + } - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - afr_self_heal_t *sh = NULL; + gf_log (this->name, GF_LOG_TRACE, + "inspecting existence of %s under %s", + entry->d_name, local->loc.path); - local = frame->local; - sh = &local->self_heal; - priv = this->private; + ret = afr_impunge_frame_create (frame, this, active_src, + &impunge_frame); + if (ret) { + op_errno = -ret; + goto out; + } - source = local->self_heal.source; - sources = local->self_heal.sources; + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + ret = afr_build_child_loc (this, &impunge_local->loc, &local->loc, + entry->d_name); + loc_copy (&impunge_sh->parent_loc, &local->loc); + if (ret != 0) { + op_errno = ENOMEM; + goto out; + } + + afr_sh_common_lookup (impunge_frame, this, &impunge_local->loc, + afr_sh_entry_common_lookup_done, NULL, + AFR_LOOKUP_FAIL_CONFLICTS, NULL); + + op_ret = 0; +out: + if (ret) { + if (impunge_frame) + AFR_STACK_DESTROY (impunge_frame); + sh->impunge_done (frame, this, op_ret, op_errno); + } - sh->block_size = 131072; - sh->offset = 0; + return 0; +} - call_count = sh->active_sinks; - if (source != -1) - call_count++; - local->call_count = call_count; +int +afr_sh_entry_impunge_readdir_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, + int32_t op_ret, int32_t op_errno, + gf_dirent_t *entries, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + gf_dirent_t *entry = NULL; + off_t last_offset = 0; + int active_src = 0; + int entry_count = 0; + + priv = this->private; + local = frame->local; + sh = &local->self_heal; - fd = fd_create (local->loc.inode, frame->root->pid); - sh->healing_fd = fd; + active_src = sh->active_source; - if (source != -1) { - gf_log (this->name, GF_LOG_TRACE, - "opening directory %s on subvolume %s (source)", - local->loc.path, priv->children[source]->name); + if (op_ret <= 0) { + if (op_ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "readdir of %s on subvolume %s failed (%s)", + local->loc.path, + priv->children[active_src]->name, + strerror (op_errno)); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } else { + gf_log (this->name, GF_LOG_TRACE, + "readdir of %s on subvolume %s complete", + local->loc.path, + priv->children[active_src]->name); + } - /* open source */ - STACK_WIND_COOKIE (frame, afr_sh_entry_opendir_cbk, - (void *) (long) source, - priv->children[source], - priv->children[source]->fops->opendir, - &local->loc, fd); - call_count--; - } + afr_sh_entry_impunge_all (frame, this); + return 0; + } - /* open sinks */ - for (i = 0; i < priv->child_count; i++) { - if (sources[i] || !local->child_up[i]) - continue; + list_for_each_entry (entry, &entries->list, list) { + last_offset = entry->d_off; + entry_count++; + } - gf_log (this->name, GF_LOG_TRACE, - "opening directory %s on subvolume %s (sink)", - local->loc.path, priv->children[i]->name); + gf_log (this->name, GF_LOG_DEBUG, + "readdir'ed %d entries from %s", + entry_count, priv->children[active_src]->name); - STACK_WIND_COOKIE (frame, afr_sh_entry_opendir_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->opendir, - &local->loc, fd); + sh->offset = last_offset; + local->call_count = entry_count; - if (!--call_count) - break; - } + list_for_each_entry (entry, &entries->list, list) { + afr_sh_entry_impunge_entry (frame, this, entry); + } - return 0; + return 0; } int -afr_sh_entry_sync_prepare (call_frame_t *frame, xlator_t *this) +afr_sh_entry_impunge_subvol (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int active_sinks = 0; - int source = 0; - int i = 0; - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - source = sh->source; - - for (i = 0; i < priv->child_count; i++) { - if (sh->sources[i] == 0 && local->child_up[i] == 1) { - active_sinks++; - sh->success[i] = 1; - } - } - if (source != -1) - sh->success[source] = 1; - - if (active_sinks == 0) { - gf_log (this->name, GF_LOG_TRACE, - "no active sinks for self-heal on dir %s", - local->loc.path); - afr_sh_entry_finish (frame, this); - return 0; - } - if (source == -1 && active_sinks < 2) { - gf_log (this->name, GF_LOG_TRACE, - "cannot sync with 0 sources and 1 sink on dir %s", - local->loc.path); - afr_sh_entry_finish (frame, this); - return 0; - } - sh->active_sinks = active_sinks; - - if (source != -1) - gf_log (this->name, GF_LOG_DEBUG, - "self-healing directory %s from subvolume %s to " - "%d other", - local->loc.path, priv->children[source]->name, - active_sinks); - else - gf_log (this->name, GF_LOG_DEBUG, - "no active sources for %s found. " - "merging all entries as a conservative decision", - local->loc.path); + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int32_t active_src = 0; - afr_sh_entry_open (frame, this); + priv = this->private; + local = frame->local; + sh = &local->self_heal; + active_src = sh->active_source; + gf_log (this->name, GF_LOG_DEBUG, "%s: readdir from offset %zd", + local->loc.path, sh->offset); + + STACK_WIND (frame, afr_sh_entry_impunge_readdir_cbk, + priv->children[active_src], + priv->children[active_src]->fops->readdirp, + sh->healing_fd, sh->block_size, sh->offset, NULL); - return 0; + return 0; } int -afr_sh_entry_fix (call_frame_t *frame, xlator_t *this) +afr_sh_entry_impunge_all (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int source = 0; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int active_src = -1; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + priv = this->private; + local = frame->local; + sh = &local->self_heal; - afr_sh_build_pending_matrix (priv, sh->pending_matrix, sh->xattr, - priv->child_count, AFR_ENTRY_TRANSACTION); + sh->offset = 0; - afr_sh_print_pending_matrix (sh->pending_matrix, this); + active_src = next_active_source (frame, this, sh->active_source); + sh->active_source = active_src; - afr_sh_mark_sources (sh, priv->child_count, - AFR_SELF_HEAL_ENTRY); + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + afr_sh_entry_finish (frame, this); + return 0; + } - afr_sh_supress_errenous_children (sh->sources, sh->child_errno, - priv->child_count); + if (active_src == -1) { + /* completed creating missing files on all subvolumes */ + afr_sh_entry_erase_pending (frame, this); + return 0; + } - source = afr_sh_select_source (sh->sources, priv->child_count); - sh->source = source; + gf_log (this->name, GF_LOG_TRACE, + "impunging entries of %s on %s to other sinks", + local->loc.path, priv->children[active_src]->name); - afr_sh_entry_sync_prepare (frame, this); + afr_sh_entry_impunge_subvol (frame, this); - return 0; + return 0; } - int -afr_sh_entry_lookup_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf, dict_t *xattr) +afr_sh_entry_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, fd_t *fd, dict_t *xdata) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - - int call_count = -1; - int child_index = (long) cookie; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int call_count = 0; + int child_index = 0; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + child_index = (long) cookie; + + /* TODO: some of the open's might fail. + In that case, modify cleanup fn to send flush on those + fd's which are already open */ + + LOCK (&frame->lock); + { + if (op_ret == -1) { + gf_log (this->name, GF_LOG_ERROR, + "opendir of %s failed on child %s (%s)", + local->loc.path, + priv->children[child_index]->name, + strerror (op_errno)); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } + } + UNLOCK (&frame->lock); - LOCK (&frame->lock); - { - if (op_ret != -1) { - sh->xattr[child_index] = dict_ref (xattr); - sh->buf[child_index] = *buf; - } - } - UNLOCK (&frame->lock); + call_count = afr_frame_return (frame); - call_count = afr_frame_return (frame); + if (call_count == 0) { + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + afr_sh_entry_finish (frame, this); + return 0; + } + gf_log (this->name, GF_LOG_TRACE, + "fd for %s opened, commencing sync", + local->loc.path); - if (call_count == 0) { - afr_sh_entry_fix (frame, this); - } + sh->active_source = -1; + afr_sh_entry_expunge_all (frame, this); + } - return 0; + return 0; } - int -afr_sh_entry_lookup (call_frame_t *frame, xlator_t *this) +afr_sh_entry_open (call_frame_t *frame, xlator_t *this) { - afr_self_heal_t * sh = NULL; - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - dict_t *xattr_req = NULL; - int ret = 0; - int call_count = 0; - int i = 0; - - priv = this->private; - local = frame->local; - sh = &local->self_heal; - - call_count = local->child_count; - - local->call_count = call_count; - - xattr_req = dict_new(); - if (xattr_req) { - for (i = 0; i < priv->child_count; i++) { - ret = dict_set_uint64 (xattr_req, - priv->pending_key[i], - 3 * sizeof(int32_t)); - } + int i = 0; + int call_count = 0; + + int source = -1; + int *sources = NULL; + + fd_t *fd = NULL; + + afr_local_t * local = NULL; + afr_private_t * priv = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + source = local->self_heal.source; + sources = local->self_heal.sources; + + sh->block_size = priv->sh_readdir_size; + sh->offset = 0; + + call_count = sh->active_sinks; + if (source != -1) + call_count++; + + local->call_count = call_count; + + fd = fd_create (local->loc.inode, frame->root->pid); + sh->healing_fd = fd; + + if (source != -1) { + gf_log (this->name, GF_LOG_TRACE, + "opening directory %s on subvolume %s (source)", + local->loc.path, priv->children[source]->name); + + /* open source */ + STACK_WIND_COOKIE (frame, afr_sh_entry_opendir_cbk, + (void *) (long) source, + priv->children[source], + priv->children[source]->fops->opendir, + &local->loc, fd, NULL); + call_count--; } - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, - afr_sh_entry_lookup_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->lookup, - &local->loc, xattr_req); - if (!--call_count) - break; - } - } - - if (xattr_req) - dict_unref (xattr_req); - - return 0; -} + /* open sinks */ + for (i = 0; i < priv->child_count; i++) { + if (sources[i] || !local->child_up[i]) + continue; + gf_log (this->name, GF_LOG_TRACE, + "opening directory %s on subvolume %s (sink)", + local->loc.path, priv->children[i]->name); + STACK_WIND_COOKIE (frame, afr_sh_entry_opendir_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->opendir, + &local->loc, fd, NULL); -int -afr_sh_entry_lock_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - int call_count = 0; - int child_index = (long) cookie; - - /* TODO: what if lock fails? */ - - local = frame->local; - sh = &local->self_heal; - - LOCK (&frame->lock); - { - if (op_ret == -1) { - sh->op_failed = 1; - - gf_log (this->name, GF_LOG_DEBUG, - "locking inode of %s on child %d failed: %s", - local->loc.path, child_index, - strerror (op_errno)); - } else { - gf_log (this->name, GF_LOG_TRACE, - "inode of %s on child %d locked", - local->loc.path, child_index); - } - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) { - if (sh->op_failed == 1) { - afr_sh_entry_finish (frame, this); - return 0; - } - - afr_sh_entry_lookup (frame, this); - } - - return 0; + if (!--call_count) + break; + } + + return 0; } int -afr_sh_entry_lock (call_frame_t *frame, xlator_t *this) +afr_sh_entry_sync_prepare (call_frame_t *frame, xlator_t *this) { - int i = 0; - int call_count = 0; - - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - afr_self_heal_t * sh = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int source = 0; + local = frame->local; + sh = &local->self_heal; + priv = this->private; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + source = sh->source; - call_count = local->child_count; + afr_sh_mark_source_sinks (frame, this); + if (source != -1) + sh->success[source] = 1; - local->call_count = call_count; + if (sh->active_sinks == 0) { + gf_log (this->name, GF_LOG_TRACE, + "no active sinks for self-heal on dir %s", + local->loc.path); + afr_sh_entry_finish (frame, this); + return 0; + } + if (source == -1 && sh->active_sinks < 2) { + gf_log (this->name, GF_LOG_TRACE, + "cannot sync with 0 sources and 1 sink on dir %s", + local->loc.path); + afr_sh_entry_finish (frame, this); + return 0; + } - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - gf_log (this->name, GF_LOG_TRACE, - "locking %s on subvolume %s", - local->loc.path, priv->children[i]->name); + if (source != -1) + gf_log (this->name, GF_LOG_DEBUG, + "self-healing directory %s from subvolume %s to " + "%d other", + local->loc.path, priv->children[source]->name, + sh->active_sinks); + else + gf_log (this->name, GF_LOG_DEBUG, + "no active sources for %s found. " + "merging all entries as a conservative decision", + local->loc.path); - STACK_WIND_COOKIE (frame, afr_sh_entry_lock_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->entrylk, - this->name, - &local->loc, NULL, - ENTRYLK_LOCK_NB, ENTRYLK_WRLCK); - if (!--call_count) - break; - } - } + sh->actual_sh_started = _gf_true; + afr_set_self_heal_status (sh, AFR_SELF_HEAL_SYNC_BEGIN); + afr_sh_entry_open (frame, this); - return 0; + return 0; } -int -afr_self_heal_entry (call_frame_t *frame, xlator_t *this) +void +afr_sh_entry_fix (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int source = 0; + int nsources = 0; + int32_t subvol_status = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + if (op_ret < 0) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_set_error (sh, op_errno); + afr_sh_entry_finish (frame, this); + goto out; + } + + if (sh->forced_merge) { + sh->source = -1; + goto heal; + } + + nsources = afr_build_sources (this, sh->xattr, sh->buf, + sh->pending_matrix, sh->sources, + sh->success_children, + AFR_ENTRY_TRANSACTION, &subvol_status, + _gf_true); + if ((subvol_status & ALL_FOOLS) || + (subvol_status & SPLIT_BRAIN)) { + gf_log (this->name, GF_LOG_INFO, "%s: Performing conservative " + "merge", local->loc.path); + source = -1; + memset (sh->sources, 0, + sizeof (*sh->sources) * priv->child_count); + } else if (nsources == 0) { + gf_log (this->name, GF_LOG_TRACE, + "No self-heal needed for %s", + local->loc.path); + + afr_sh_entry_finish (frame, this); + return; + } else { + source = afr_sh_select_source (sh->sources, priv->child_count); + } + sh->source = source; - priv = this->private; - local = frame->local; - sh = &local->self_heal; + afr_reset_children (sh->fresh_children, priv->child_count); + afr_get_fresh_children (sh->success_children, sh->sources, + sh->fresh_children, priv->child_count); + if (sh->source >= 0) + afr_inode_set_read_ctx (this, sh->inode, sh->source, + sh->fresh_children); - if (local->need_entry_self_heal && priv->entry_self_heal) { - afr_sh_entry_lock (frame, this); - } else { - gf_log (this->name, GF_LOG_TRACE, - "proceeding to completion on %s", - local->loc.path); - afr_sh_entry_done (frame, this); - } +heal: + afr_sh_entry_sync_prepare (frame, this); +out: + return; +} + +int +afr_sh_post_nonblocking_entry_cbk (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + int_lock = &local->internal_lock; + sh = &local->self_heal; + + if (int_lock->lock_op_ret < 0) { + gf_log (this->name, GF_LOG_ERROR, "Non Blocking entrylks " + "failed for %s.", local->loc.path); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_entry_done (frame, this); + } else { + + gf_log (this->name, GF_LOG_DEBUG, "Non Blocking entrylks done " + "for %s. Proceeding to FOP", local->loc.path); + afr_sh_common_lookup (frame, this, &local->loc, + afr_sh_entry_fix, NULL, + AFR_LOOKUP_FAIL_CONFLICTS | + AFR_LOOKUP_FAIL_MISSING_GFIDS, + NULL); + } - return 0; + return 0; } +int +afr_self_heal_entry (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + + priv = this->private; + local = frame->local; + sh = &local->self_heal; + + sh->sh_type_in_action = AFR_SELF_HEAL_ENTRY; + + if (local->self_heal.do_entry_self_heal && priv->entry_self_heal) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_STARTED); + afr_sh_entrylk (frame, this, &local->loc, NULL, + afr_sh_post_nonblocking_entry_cbk); + } else { + gf_log (this->name, GF_LOG_TRACE, + "proceeding to completion on %s", + local->loc.path); + afr_sh_entry_done (frame, this); + } + + return 0; +} diff --git a/xlators/cluster/afr/src/afr-self-heal-metadata.c b/xlators/cluster/afr/src/afr-self-heal-metadata.c index 966b754b3..fd5da6cfd 100644 --- a/xlators/cluster/afr/src/afr-self-heal-metadata.c +++ b/xlators/cluster/afr/src/afr-self-heal-metadata.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #include <libgen.h> @@ -52,755 +43,728 @@ int afr_sh_metadata_done (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int i = 0; - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - -// memset (sh->child_errno, 0, sizeof (int) * priv->child_count); - memset (sh->buf, 0, sizeof (struct stat) * priv->child_count); - memset (sh->success, 0, sizeof (int) * priv->child_count); - - for (i = 0; i < priv->child_count; i++) { - if (sh->xattr[i]) - dict_unref (sh->xattr[i]); - sh->xattr[i] = NULL; - } - - if (local->govinda_gOvinda) { - gf_log (this->name, GF_LOG_DEBUG, - "aborting selfheal of %s", - local->loc.path); - sh->completion_cbk (frame, this); - } else { - if (S_ISREG (local->cont.lookup.buf.st_mode)) { - gf_log (this->name, GF_LOG_TRACE, - "proceeding to data check on %s", - local->loc.path); - afr_self_heal_data (frame, this); - return 0; - } - - if (S_ISDIR (local->cont.lookup.buf.st_mode)) { - gf_log (this->name, GF_LOG_TRACE, - "proceeding to entry check on %s", - local->loc.path); - afr_self_heal_entry (frame, this); - return 0; - } - gf_log (this->name, GF_LOG_DEBUG, - "completed self heal of %s", - local->loc.path); - - sh->completion_cbk (frame, this); - } - - return 0; -} + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + local = frame->local; + sh = &local->self_heal; -int -afr_sh_metadata_unlck_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - afr_local_t *local = NULL; - int call_count = 0; + afr_sh_reset (frame, this); + if (IA_ISDIR (sh->type)) { + gf_log (this->name, GF_LOG_DEBUG, + "proceeding to entry check on %s", + local->loc.path); + afr_self_heal_entry (frame, this); + } else { + gf_log (this->name, GF_LOG_DEBUG, + "proceeding to data check on %s", + local->loc.path); + afr_self_heal_data (frame, this); + } + return 0; +} - local = frame->local; +int +afr_sh_inode_unlock (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; - call_count = afr_frame_return (frame); + local = frame->local; + int_lock = &local->internal_lock; - if (call_count == 0) - afr_sh_metadata_done (frame, this); + int_lock->lock_cbk = afr_sh_metadata_done; + afr_unlock (frame, this); - return 0; + return 0; } - int afr_sh_metadata_finish (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int i = 0; - int call_count = 0; - struct flock flock = {0, }; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - call_count = local->child_count; - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - flock.l_start = 0; - flock.l_len = 0; - flock.l_type = F_UNLCK; - - if (local->child_up[i]) { - gf_log (this->name, GF_LOG_TRACE, - "unlocking %s on subvolume %s", - local->loc.path, priv->children[i]->name); - - STACK_WIND (frame, afr_sh_metadata_unlck_cbk, - priv->children[i], - priv->children[i]->fops->inodelk, - this->name, - &local->loc, F_SETLK, &flock); - - if (!--call_count) - break; - } - } - - return 0; -} + afr_sh_inode_unlock (frame, this); + return 0; +} int -afr_sh_metadata_erase_pending_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, - int32_t op_errno, dict_t *xattr) +afr_sh_metadata_fail (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + local = frame->local; + sh = &local->self_heal; - LOCK (&frame->lock); - { - } - UNLOCK (&frame->lock); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_metadata_finish (frame, this); + return 0; +} - call_count = afr_frame_return (frame); +int +afr_sh_metadata_erase_pending_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, + int32_t op_errno, dict_t *xattr, dict_t *xdata) +{ + afr_local_t *local = NULL; + int call_count = 0; + long i = 0; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + + local = frame->local; + priv = this->private; + sh = &local->self_heal; + i = (long)cookie; + + if ((!IA_ISREG (sh->buf[sh->source].ia_type)) && + (!IA_ISDIR (sh->buf[sh->source].ia_type))) { + afr_children_add_child (sh->fresh_children, i, + priv->child_count); + } + call_count = afr_frame_return (frame); - if (call_count == 0) - afr_sh_metadata_finish (frame, this); + if (call_count == 0) { + if ((!IA_ISREG (sh->buf[sh->source].ia_type)) && + (!IA_ISDIR (sh->buf[sh->source].ia_type))) { + afr_inode_set_read_ctx (this, sh->inode, sh->source, + sh->fresh_children); + } + afr_sh_metadata_finish (frame, this); + } - return 0; + return 0; } - int afr_sh_metadata_erase_pending (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; - int i = 0; - dict_t **erase_xattr = NULL; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - afr_sh_pending_to_delta (priv, sh->xattr, sh->delta_matrix, - sh->success, priv->child_count, - AFR_METADATA_TRANSACTION); - - erase_xattr = CALLOC (sizeof (*erase_xattr), priv->child_count); - - for (i = 0; i < priv->child_count; i++) { - if (sh->xattr[i]) { - call_count++; - - erase_xattr[i] = get_new_dict(); - dict_ref (erase_xattr[i]); - } - } - - afr_sh_delta_to_xattr (priv, sh->delta_matrix, erase_xattr, - priv->child_count, AFR_METADATA_TRANSACTION); - - local->call_count = call_count; - - if (call_count == 0) { - gf_log (this->name, GF_LOG_WARNING, - "metadata of %s not healed on any subvolume", - local->loc.path); - - afr_sh_metadata_finish (frame, this); - } - - for (i = 0; i < priv->child_count; i++) { - if (!erase_xattr[i]) - continue; - - gf_log (this->name, GF_LOG_TRACE, - "erasing pending flags from %s on %s", - local->loc.path, priv->children[i]->name); - - STACK_WIND_COOKIE (frame, afr_sh_metadata_erase_pending_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->xattrop, - &local->loc, - GF_XATTROP_ADD_ARRAY, erase_xattr[i]); - if (!--call_count) - break; - } - - for (i = 0; i < priv->child_count; i++) { - if (erase_xattr[i]) { - dict_unref (erase_xattr[i]); - } - } - FREE (erase_xattr); - - return 0; + afr_sh_erase_pending (frame, this, AFR_METADATA_TRANSACTION, + afr_sh_metadata_erase_pending_cbk, + afr_sh_metadata_finish); + return 0; } int afr_sh_metadata_sync_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) + int32_t op_ret, int32_t op_errno, dict_t *xdata) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; - int child_index = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int call_count = 0; + int child_index = 0; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + local = frame->local; + sh = &local->self_heal; + priv = this->private; - child_index = (long) cookie; + child_index = (long) cookie; - LOCK (&frame->lock); - { - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "setting attributes failed for %s on %s (%s)", - local->loc.path, - priv->children[child_index]->name, - strerror (op_errno)); + LOCK (&frame->lock); + { + if (op_ret == -1) { + gf_log (this->name, GF_LOG_INFO, + "setting attributes failed for %s on %s (%s)", + local->loc.path, + priv->children[child_index]->name, + strerror (op_errno)); - sh->success[child_index] = 0; - } - } - UNLOCK (&frame->lock); + sh->success[child_index] = 0; + } + } + UNLOCK (&frame->lock); - call_count = afr_frame_return (frame); + call_count = afr_frame_return (frame); - if (call_count == 0) - afr_sh_metadata_erase_pending (frame, this); + if (call_count == 0) { + if (local->xattr_req) { + dict_unref (local->xattr_req); + local->xattr_req = NULL; + } + afr_sh_metadata_erase_pending (frame, this); + } - return 0; + return 0; } int -afr_sh_metadata_attr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) +afr_sh_metadata_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *preop, struct iatt *postop, dict_t *xdata) { - afr_sh_metadata_sync_cbk (frame, cookie, this, op_ret, op_errno); + afr_sh_metadata_sync_cbk (frame, cookie, this, op_ret, op_errno, xdata); - return 0; + return 0; } int afr_sh_metadata_xattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) + int32_t op_ret, int32_t op_errno, dict_t *xdata) { - afr_sh_metadata_sync_cbk (frame, cookie, this, op_ret, op_errno); + afr_sh_metadata_sync_cbk (frame, cookie, this, op_ret, op_errno, xdata); - return 0; + return 0; } - int -afr_sh_metadata_sync (call_frame_t *frame, xlator_t *this, dict_t *xattr) +afr_sh_removexattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + dict_t *xdata) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int source = 0; - int active_sinks = 0; - int call_count = 0; - int i = 0; - struct timespec ts[2]; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - source = sh->source; - active_sinks = sh->active_sinks; - - /* - * 4 calls per sink - chown, chmod, utimes, setxattr - */ - if (xattr) - call_count = active_sinks * 4; - else - call_count = active_sinks * 3; - - local->call_count = call_count; - -#ifdef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC - ts[0] = sh->buf[source].st_atim; - ts[1] = sh->buf[source].st_mtim; -#elif HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC - ts[0] = sh->buf[source].st_atimespec; - ts[1] = sh->buf[source].st_mtimespec; -#else - ts[0].tv_sec = sh->buf[source].st_atime; - ts[1].tv_sec = sh->buf[source].st_mtime; -#endif + int i = 0; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + + priv = this->private; + local = frame->local; + + if (op_ret < 0) { + afr_sh_metadata_sync_cbk (frame, cookie, + this, -1, op_errno, xdata); + goto out; + } - for (i = 0; i < priv->child_count; i++) { - if (call_count == 0) { - break; - } - if (sh->sources[i] || !local->child_up[i]) - continue; - - gf_log (this->name, GF_LOG_DEBUG, - "self-healing metadata of %s from %s to %s", - local->loc.path, priv->children[source]->name, - priv->children[i]->name); - - STACK_WIND_COOKIE (frame, afr_sh_metadata_attr_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->chown, - &local->loc, - sh->buf[source].st_uid, - sh->buf[source].st_gid); - - STACK_WIND_COOKIE (frame, afr_sh_metadata_attr_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->chmod, - &local->loc, sh->buf[source].st_mode); - - STACK_WIND_COOKIE (frame, afr_sh_metadata_attr_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->utimens, - &local->loc, ts); - - call_count = call_count - 3; - - if (!xattr) - continue; - - STACK_WIND_COOKIE (frame, afr_sh_metadata_xattr_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->setxattr, - &local->loc, xattr, 0); - call_count--; - } - - return 0; + i = (long) cookie; + + STACK_WIND_COOKIE (frame, afr_sh_metadata_xattr_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->setxattr, + &local->loc, local->xattr_req, 0, NULL); + + out: + return 0; +} + +inline void +afr_prune_special_keys (dict_t *xattr_dict) +{ + dict_del (xattr_dict, GF_SELINUX_XATTR_KEY); } +inline void +afr_prune_pending_keys (dict_t *xattr_dict, afr_private_t *priv) +{ + int i = 0; + + for (; i < priv->child_count; i++) { + dict_del (xattr_dict, priv->pending_key[i]); + } +} int -afr_sh_metadata_getxattr_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, dict_t *xattr) +afr_sh_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xattr, + dict_t *xdata) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int source = 0; + int i = 0; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; - int i; + priv = this->private; + local = frame->local; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + if (op_ret < 0) { + afr_sh_metadata_sync_cbk (frame, cookie, + this, -1, op_errno, xdata); + goto out; + } - source = sh->source; + afr_prune_pending_keys (xattr, priv); - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "getxattr of %s failed on subvolume %s (%s). proceeding without xattr", - local->loc.path, priv->children[source]->name, - strerror (op_errno)); + afr_prune_special_keys (xattr); - afr_sh_metadata_sync (frame, this, NULL); - } else { - for (i = 0; i < priv->child_count; i++) { - dict_del (xattr, priv->pending_key[i]); - } + i = (long) cookie; - afr_sh_metadata_sync (frame, this, xattr); - } + /* send removexattr in bulk via xdata */ + STACK_WIND_COOKIE (frame, afr_sh_removexattr_cbk, + cookie, + priv->children[i], + priv->children[i]->fops->removexattr, + &local->loc, "", xattr); - return 0; + out: + return 0; } - int -afr_sh_metadata_sync_prepare (call_frame_t *frame, xlator_t *this) +afr_sh_metadata_sync (call_frame_t *frame, xlator_t *this, dict_t *xattr) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int active_sinks = 0; - int source = 0; - int i = 0; - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - source = sh->source; - - for (i = 0; i < priv->child_count; i++) { - if (sh->sources[i] == 0 && local->child_up[i] == 1) { - active_sinks++; - sh->success[i] = 1; - } - } - sh->success[source] = 1; - - if (active_sinks == 0) { - gf_log (this->name, GF_LOG_DEBUG, - "no active sinks for performing self-heal on file %s", - local->loc.path); - afr_sh_metadata_finish (frame, this); - return 0; - } - sh->active_sinks = active_sinks; - - gf_log (this->name, GF_LOG_TRACE, - "syncing metadata of %s from subvolume %s to %d active sinks", - local->loc.path, priv->children[source]->name, active_sinks); - - STACK_WIND (frame, afr_sh_metadata_getxattr_cbk, - priv->children[source], - priv->children[source]->fops->getxattr, - &local->loc, NULL); - - return 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int source = 0; + int active_sinks = 0; + int call_count = 0; + int i = 0; + + struct iatt stbuf = {0,}; + int32_t valid = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + source = sh->source; + active_sinks = sh->active_sinks; + + /* + * 2 calls per sink - setattr, setxattr + */ + if (xattr) { + call_count = active_sinks * 2; + local->xattr_req = dict_ref (xattr); + } else + call_count = active_sinks; + + local->call_count = call_count; + + stbuf.ia_atime = sh->buf[source].ia_atime; + stbuf.ia_atime_nsec = sh->buf[source].ia_atime_nsec; + stbuf.ia_mtime = sh->buf[source].ia_mtime; + stbuf.ia_mtime_nsec = sh->buf[source].ia_mtime_nsec; + + stbuf.ia_uid = sh->buf[source].ia_uid; + stbuf.ia_gid = sh->buf[source].ia_gid; + + stbuf.ia_type = sh->buf[source].ia_type; + stbuf.ia_prot = sh->buf[source].ia_prot; + + valid = GF_SET_ATTR_MODE | + GF_SET_ATTR_UID | GF_SET_ATTR_GID | + GF_SET_ATTR_ATIME | GF_SET_ATTR_MTIME; + + for (i = 0; i < priv->child_count; i++) { + if (call_count == 0) { + break; + } + if (sh->sources[i] || !local->child_up[i]) + continue; + + gf_log (this->name, GF_LOG_DEBUG, + "self-healing metadata of %s from %s to %s", + local->loc.path, priv->children[source]->name, + priv->children[i]->name); + + STACK_WIND_COOKIE (frame, afr_sh_metadata_setattr_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->setattr, + &local->loc, &stbuf, valid, NULL); + + call_count--; + + if (!xattr) + continue; + + STACK_WIND_COOKIE (frame, afr_sh_getxattr_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->getxattr, + &local->loc, NULL, NULL); + call_count--; + } + + return 0; } int -afr_sh_metadata_fix (call_frame_t *frame, xlator_t *this) +afr_sh_metadata_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xattr, + dict_t *xdata) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int nsources = 0; - int source = 0; - int i = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int source = 0; - local = frame->local; - sh = &local->self_heal; - priv = this->private; + local = frame->local; + sh = &local->self_heal; + priv = this->private; - afr_sh_build_pending_matrix (priv, sh->pending_matrix, sh->xattr, - priv->child_count, - AFR_METADATA_TRANSACTION); + source = sh->source; - afr_sh_print_pending_matrix (sh->pending_matrix, this); + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "getxattr of %s failed on subvolume %s (%s). proceeding without xattr", + local->loc.path, priv->children[source]->name, + strerror (op_errno)); + + afr_sh_metadata_sync (frame, this, NULL); + } else { + afr_prune_pending_keys (xattr, priv); + afr_sh_metadata_sync (frame, this, xattr); + } - nsources = afr_sh_mark_sources (sh, priv->child_count, - AFR_SELF_HEAL_METADATA); + return 0; +} - afr_sh_supress_errenous_children (sh->sources, sh->child_errno, - priv->child_count); +static void +afr_set_metadata_sh_info_str (afr_local_t *local, afr_self_heal_t *sh, + xlator_t *this) +{ + afr_private_t *priv = NULL; + int i = 0; + char num[1024] = {0}; + size_t len = 0; + char *string = NULL; + size_t off = 0; + char *source_child = " from source %s to"; + char *format = " %s, "; + char *string_msg = " metadata self heal"; + char *pending_matrix_str = NULL; + int down_child_present = 0; + int unknown_child_present = 0; + char *down_subvol_1 = " down subvolume is "; + char *unknown_subvol_1 = " unknown subvolume is"; + char *down_subvol_2 = " down subvolumes are "; + char *unknown_subvol_2 = " unknown subvolumes are "; + int down_count = 0; + int unknown_count = 0; + + priv = this->private; + + pending_matrix_str = afr_get_pending_matrix_str (sh->pending_matrix, + this); + + if (!pending_matrix_str) + pending_matrix_str = ""; + + len += snprintf (num, sizeof (num), "%s", string_msg); + + for (i = 0; i < priv->child_count; i++) { + if ((sh->source == i) && (local->child_up[i] == 1)) { + len += snprintf (num, sizeof (num), source_child, + priv->children[i]->name); + } else if ((local->child_up[i] == 1) && (sh->sources[i] == 0)) { + len += snprintf (num, sizeof (num), format, + priv->children[i]->name); + } else if (local->child_up[i] == 0) { + len += snprintf (num, sizeof (num), format, + priv->children[i]->name); + if (!down_child_present) + down_child_present = 1; + down_count++; + } else if (local->child_up[i] == -1) { + len += snprintf (num, sizeof (num), format, + priv->children[i]->name); + if (!unknown_child_present) + unknown_child_present = 1; + unknown_count++; + } + } - if (nsources == 0) { - gf_log (this->name, GF_LOG_TRACE, - "No self-heal needed for %s", - local->loc.path); + if (down_child_present) { + if (down_count > 1) { + len += snprintf (num, sizeof (num), "%s", + down_subvol_2); + } else { + len += snprintf (num, sizeof (num), "%s", + down_subvol_1); + } + } + if (unknown_child_present) { + if (unknown_count > 1) { + len += snprintf (num, sizeof (num), "%s", + unknown_subvol_2); + } else { + len += snprintf (num, sizeof (num), "%s", + unknown_subvol_1); + } + } + + len ++; + + string = GF_CALLOC (len, sizeof (char), gf_common_mt_char); + if (!string) + return; + off += snprintf (string + off, len - off, "%s", string_msg); + for (i=0; i < priv->child_count; i++) { + if ((sh->source == i) && (local->child_up[i] == 1)) + off += snprintf (string + off, len - off, source_child, + priv->children[i]->name); + } + + for (i = 0; i < priv->child_count; i++) { + if ((local->child_up[i] == 1)&& (sh->sources[i] == 0)) + off += snprintf (string + off, len - off, format, + priv->children[i]->name); + } + + if (down_child_present) { + if (down_count > 1) { + off += snprintf (string + off, len - off, "%s", + down_subvol_2); + } else { + off += snprintf (string + off, len - off, "%s", + down_subvol_1); + } + } + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i] == 0) + off += snprintf (string + off, len - off, format, + priv->children[i]->name); + } + + if (unknown_child_present) { + if (unknown_count > 1) { + off += snprintf (string + off, len - off, "%s", + unknown_subvol_2); + } else { + off += snprintf (string + off, len - off, "%s", + unknown_subvol_1); + } + } + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i] == -1) + off += snprintf (string + off, len - off, format, + priv->children[i]->name); + } + + gf_asprintf (&sh->metadata_sh_info, "%s metadata %s,", string, + pending_matrix_str); + + if (pending_matrix_str && strcmp (pending_matrix_str, "")) + GF_FREE (pending_matrix_str); + + if (string && strcmp (string, "")) + GF_FREE (string); +} + +int +afr_sh_metadata_sync_prepare (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int source = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + source = sh->source; + + afr_sh_mark_source_sinks (frame, this); + if (sh->active_sinks == 0) { + gf_log (this->name, GF_LOG_DEBUG, + "no active sinks for performing self-heal on file %s", + local->loc.path); afr_sh_metadata_finish (frame, this); return 0; } - if ((nsources == -1) - && (priv->favorite_child != -1) - && (sh->child_errno[priv->favorite_child] == 0)) { + gf_log (this->name, GF_LOG_TRACE, + "syncing metadata of %s from subvolume %s to %d active sinks", + local->loc.path, priv->children[source]->name, + sh->active_sinks); - gf_log (this->name, GF_LOG_WARNING, - "Picking favorite child %s as authentic source to resolve conflicting metadata of %s", - priv->children[priv->favorite_child]->name, - local->loc.path); + sh->actual_sh_started = _gf_true; + afr_set_self_heal_status (sh, AFR_SELF_HEAL_SYNC_BEGIN); + afr_set_metadata_sh_info_str (local, sh, this); + STACK_WIND (frame, afr_sh_metadata_getxattr_cbk, + priv->children[source], + priv->children[source]->fops->getxattr, + &local->loc, NULL, NULL); - sh->sources[priv->favorite_child] = 1; + return 0; +} - nsources = afr_sh_source_count (sh->sources, - priv->child_count); - } - if (nsources == -1) { - gf_log (this->name, GF_LOG_ERROR, - "Unable to self-heal permissions/ownership of '%s' " - "(possible split-brain). Please fix the file on " - "all backend volumes", local->loc.path); +void +afr_sh_metadata_fix (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int nsources = 0; + int source = 0; + int i = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + if (op_ret < 0) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_set_error (sh, op_errno); + afr_sh_metadata_finish (frame, this); + goto out; + } + nsources = afr_build_sources (this, sh->xattr, sh->buf, + sh->pending_matrix, sh->sources, + sh->success_children, + AFR_METADATA_TRANSACTION, NULL, _gf_false); + if ((nsources == -1) + && (priv->favorite_child != -1) + && (sh->child_errno[priv->favorite_child] == 0)) { + + gf_log (this->name, GF_LOG_WARNING, + "Picking favorite child %s as authentic source to resolve conflicting metadata of %s", + priv->children[priv->favorite_child]->name, + local->loc.path); - local->govinda_gOvinda = 1; + sh->sources[priv->favorite_child] = 1; - afr_sh_metadata_finish (frame, this); - return 0; - } + nsources = afr_sh_source_count (sh->sources, + priv->child_count); + } - source = afr_sh_select_source (sh->sources, priv->child_count); + if (nsources == -1) { + afr_sh_print_split_brain_log (sh->pending_matrix, this, + local->loc.path); + afr_set_split_brain (this, sh->inode, SPB, DONT_KNOW); + afr_sh_metadata_fail (frame, this); + goto out; + } + + afr_set_split_brain (this, sh->inode, NO_SPB, DONT_KNOW); + if (nsources == 0) { + gf_log (this->name, GF_LOG_TRACE, + "No self-heal needed for %s", + local->loc.path); + + afr_sh_metadata_finish (frame, this); + goto out; + } + + source = afr_sh_select_source (sh->sources, priv->child_count); if (source == -1) { gf_log (this->name, GF_LOG_DEBUG, "No active sources found."); afr_sh_metadata_finish (frame, this); - return 0; + goto out; } - sh->source = source; + sh->source = source; - /* detect changes not visible through pending flags -- JIC */ - for (i = 0; i < priv->child_count; i++) { - if (i == source || sh->child_errno[i]) - continue; + /* detect changes not visible through pending flags -- JIC */ + for (i = 0; i < priv->child_count; i++) { + if (i == source || sh->child_errno[i]) + continue; - if (PERMISSION_DIFFERS (&sh->buf[i], &sh->buf[source])) - sh->sources[i] = 0; + if (PERMISSION_DIFFERS (&sh->buf[i], &sh->buf[source])) + sh->sources[i] = 0; - if (OWNERSHIP_DIFFERS (&sh->buf[i], &sh->buf[source])) - sh->sources[i] = 0; - } + if (OWNERSHIP_DIFFERS (&sh->buf[i], &sh->buf[source])) + sh->sources[i] = 0; + } - afr_sh_metadata_sync_prepare (frame, this); + if ((!IA_ISREG (sh->buf[source].ia_type)) && + (!IA_ISDIR (sh->buf[source].ia_type))) { + afr_reset_children (sh->fresh_children, priv->child_count); + afr_get_fresh_children (sh->success_children, sh->sources, + sh->fresh_children, priv->child_count); + afr_inode_set_read_ctx (this, sh->inode, sh->source, + sh->fresh_children); + } - return 0; + if (sh->do_metadata_self_heal && priv->metadata_self_heal) + afr_sh_metadata_sync_prepare (frame, this); + else + afr_sh_metadata_finish (frame, this); +out: + return; } - int -afr_sh_metadata_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf, dict_t *xattr) +afr_sh_metadata_post_nonblocking_inodelk_cbk (call_frame_t *frame, + xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; - int child_index = 0; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - child_index = (long) cookie; - - LOCK (&frame->lock); - { - if (op_ret == 0) { - gf_log (this->name, GF_LOG_TRACE, - "path %s on subvolume %s is of mode 0%o", - local->loc.path, - priv->children[child_index]->name, - buf->st_mode); - - sh->buf[child_index] = *buf; - if (xattr) - sh->xattr[child_index] = dict_ref (xattr); - } else { - gf_log (this->name, GF_LOG_DEBUG, - "path %s on subvolume %s => -1 (%s)", - local->loc.path, - priv->children[child_index]->name, - strerror (op_errno)); - - sh->child_errno[child_index] = op_errno; - } - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) - afr_sh_metadata_fix (frame, this); - - return 0; -} + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + + local = frame->local; + int_lock = &local->internal_lock; + + if (int_lock->lock_op_ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, "Non Blocking metadata " + "inodelks failed for %s.", local->loc.path); + gf_log (this->name, GF_LOG_DEBUG, "Metadata self-heal " + "failed for %s.", local->loc.path); + afr_sh_metadata_done (frame, this); + } else { + + gf_log (this->name, GF_LOG_DEBUG, "Non Blocking metadata " + "inodelks done for %s. Proceeding to FOP", + local->loc.path); + afr_sh_common_lookup (frame, this, &local->loc, + afr_sh_metadata_fix, NULL, + AFR_LOOKUP_FAIL_CONFLICTS | + AFR_LOOKUP_FAIL_MISSING_GFIDS, + NULL); + } + return 0; +} int -afr_sh_metadata_lookup (call_frame_t *frame, xlator_t *this) +afr_sh_metadata_lock (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int i = 0; - int call_count = 0; - dict_t *xattr_req = NULL; - int ret = 0; - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - call_count = local->child_count; - local->call_count = call_count; - - xattr_req = dict_new(); - - if (xattr_req) { - for (i = 0; i < priv->child_count; i++) { - ret = dict_set_uint64 (xattr_req, - priv->pending_key[i], - 3 * sizeof(int32_t)); - } - } + afr_internal_lock_t *int_lock = NULL; + afr_inodelk_t *inodelk = NULL; + afr_local_t *local = NULL; - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - gf_log (this->name, GF_LOG_TRACE, - "looking up %s on %s", - local->loc.path, priv->children[i]->name); - - STACK_WIND_COOKIE (frame, afr_sh_metadata_lookup_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->lookup, - &local->loc, xattr_req); - if (!--call_count) - break; - } - } - - if (xattr_req) - dict_unref (xattr_req); - - return 0; -} + local = frame->local; + int_lock = &local->internal_lock; + int_lock->domain = this->name; + inodelk = afr_get_inodelk (int_lock, int_lock->domain); + int_lock->transaction_lk_type = AFR_SELFHEAL_LK; + int_lock->selfheal_lk_type = AFR_METADATA_SELF_HEAL_LK; -int -afr_sh_metadata_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int call_count = 0; - int child_index = (long) cookie; - - /* TODO: what if lock fails? */ - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - LOCK (&frame->lock); - { - if (op_ret == -1) { - sh->op_failed = 1; - - gf_log (this->name, GF_LOG_DEBUG, - "locking of %s on child %d failed: %s", - local->loc.path, child_index, - strerror (op_errno)); - } else { - gf_log (this->name, GF_LOG_TRACE, - "inode of %s on child %d locked", - local->loc.path, child_index); - } - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) { - if (sh->op_failed) { - afr_sh_metadata_finish (frame, this); - return 0; - } - - afr_sh_metadata_lookup (frame, this); - } - - return 0; -} + afr_set_lock_number (frame, this); + inodelk->flock.l_start = LLONG_MAX - 1; + inodelk->flock.l_len = 0; + inodelk->flock.l_type = F_WRLCK; + int_lock->lock_cbk = afr_sh_metadata_post_nonblocking_inodelk_cbk; -int -afr_sh_metadata_lock (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int i = 0; - int call_count = 0; - struct flock flock = {0, }; - - - local = frame->local; - sh = &local->self_heal; - priv = this->private; - - call_count = local->child_count; - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - flock.l_start = 0; - flock.l_len = 0; - flock.l_type = F_WRLCK; - - if (local->child_up[i]) { - gf_log (this->name, GF_LOG_TRACE, - "locking %s on subvolume %s", - local->loc.path, priv->children[i]->name); - - STACK_WIND_COOKIE (frame, afr_sh_metadata_lk_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->inodelk, - this->name, - &local->loc, F_SETLK, &flock); - - if (!--call_count) - break; - } - } - - return 0; + afr_nonblocking_inodelk (frame, this); + + return 0; } +gf_boolean_t +afr_can_start_metadata_self_heal (afr_self_heal_t *sh, afr_private_t *priv) +{ + if (sh->force_confirm_spb) + return _gf_true; + if (sh->do_metadata_self_heal && priv->metadata_self_heal) + return _gf_true; + return _gf_false; +} int afr_self_heal_metadata (call_frame_t *frame, xlator_t *this) { - afr_local_t *local = NULL; - afr_self_heal_t *sh = NULL; - afr_private_t *priv = this->private; - - - local = frame->local; - sh = &local->self_heal; - - if (local->need_metadata_self_heal && priv->metadata_self_heal) { - afr_sh_metadata_lock (frame, this); - } else { - afr_sh_metadata_done (frame, this); - } + afr_local_t *local = NULL; + afr_private_t *priv = this->private; + afr_self_heal_t *sh = &local->self_heal; + + local = frame->local; + sh = &local->self_heal; + sh->sh_type_in_action = AFR_SELF_HEAL_METADATA; + + if (afr_can_start_metadata_self_heal (sh, priv)) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_STARTED); + afr_sh_metadata_lock (frame, this); + } else { + afr_sh_metadata_done (frame, this); + } - return 0; + return 0; } - diff --git a/xlators/cluster/afr/src/afr-self-heal.h b/xlators/cluster/afr/src/afr-self-heal.h index 73abd8fb9..7c9bc8111 100644 --- a/xlators/cluster/afr/src/afr-self-heal.h +++ b/xlators/cluster/afr/src/afr-self-heal.h @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef __AFR_SELF_HEAL_H__ @@ -22,19 +13,12 @@ #include <sys/stat.h> -#define FILETYPE_DIFFERS(buf1,buf2) ((S_IFMT & ((struct stat *)buf1)->st_mode) != (S_IFMT & ((struct stat *)buf2)->st_mode)) -#define PERMISSION_DIFFERS(buf1,buf2) ((((struct stat *)buf1)->st_mode) != (((struct stat *)buf2)->st_mode)) -#define OWNERSHIP_DIFFERS(buf1,buf2) ((((struct stat *)buf1)->st_uid) != (((struct stat *)buf2)->st_uid) || (((struct stat *)buf1)->st_gid != (((struct stat *)buf2)->st_gid))) -#define SIZE_DIFFERS(buf1,buf2) ((((struct stat *)buf1)->st_size) != (((struct stat *)buf2)->st_size)) - -#define SIZE_GREATER(buf1,buf2) ((((struct stat *)buf1)->st_size > (((struct stat *)buf2)->st_size))) +#define FILETYPE_DIFFERS(buf1,buf2) ((buf1)->ia_type != (buf2)->ia_type) +#define PERMISSION_DIFFERS(buf1,buf2) (st_mode_from_ia ((buf1)->ia_prot, (buf1)->ia_type) != st_mode_from_ia ((buf2)->ia_prot, (buf2)->ia_type)) +#define OWNERSHIP_DIFFERS(buf1,buf2) (((buf1)->ia_uid != (buf2)->ia_uid) || ((buf1)->ia_gid != (buf2)->ia_gid)) +#define SIZE_DIFFERS(buf1,buf2) ((buf1)->ia_size != (buf2)->ia_size) -int -afr_sh_has_metadata_pending (dict_t *xattr, int child_count, xlator_t *this); -int -afr_sh_has_entry_pending (dict_t *xattr, int child_count, xlator_t *this); -int -afr_sh_has_data_pending (dict_t *xattr, int child_count, xlator_t *this); +#define SIZE_GREATER(buf1,buf2) ((buf1)->ia_size > (buf2)->ia_size) int afr_self_heal_entry (call_frame_t *frame, xlator_t *this); @@ -46,7 +30,14 @@ int afr_self_heal_metadata (call_frame_t *frame, xlator_t *this); int -afr_self_heal (call_frame_t *frame, xlator_t *this, - int (*completion_cbk) (call_frame_t *, xlator_t *)); +afr_self_heal_get_source (xlator_t *this, afr_local_t *local, dict_t **xattr); + +int +afr_self_heal (call_frame_t *frame, xlator_t *this, inode_t *inode); +int +afr_lookup_select_read_child_by_txn_type (xlator_t *this, afr_local_t *local, + dict_t **xattr, + afr_transaction_type txn_type, + uuid_t gfid); #endif /* __AFR_SELF_HEAL_H__ */ diff --git a/xlators/cluster/afr/src/afr-self-heald.c b/xlators/cluster/afr/src/afr-self-heald.c new file mode 100644 index 000000000..1b48a1bca --- /dev/null +++ b/xlators/cluster/afr/src/afr-self-heald.c @@ -0,0 +1,1787 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif +#include "afr.h" +#include "syncop.h" +#include "afr-self-heald.h" +#include "afr-self-heal-common.h" +#include "protocol-common.h" +#include "event-history.h" + +typedef enum { + STOP_CRAWL_ON_SINGLE_SUBVOL = 1 +} afr_crawl_flags_t; + +typedef enum { + HEAL = 1, + INFO, + STATISTICS_TO_BE_HEALED, +} shd_crawl_op; + +typedef struct shd_dump { + dict_t *dict; + xlator_t *this; + int child; +} shd_dump_t; + +typedef struct shd_event_ { + int child; + char *path; +} shd_event_t; + +typedef struct shd_pos_ { + int child; + xlator_t *this; + afr_child_pos_t pos; +} shd_pos_t; + +typedef int +(*afr_crawl_done_cbk_t) (int ret, call_frame_t *sync_frame, void *crawl_data); + +void +afr_start_crawl (xlator_t *this, int idx, afr_crawl_type_t crawl, + process_entry_cbk_t process_entry, void *op_data, + gf_boolean_t exclusive, int crawl_flags, + afr_crawl_done_cbk_t crawl_done); + +static int +_crawl_directory (fd_t *fd, loc_t *loc, afr_crawl_data_t *crawl_data); + +/* For calling straight through (e.g. already in a synctask). */ +int +afr_find_child_position (xlator_t *this, int child, afr_child_pos_t *pos); + +/* For deferring through a new synctask. */ +int +afr_syncop_find_child_position (void *data); + +static int +_loc_assign_gfid_path (loc_t *loc) +{ + int ret = -1; + char gfid_path[64] = {0}; + + if (loc->inode && !uuid_is_null (loc->inode->gfid)) { + ret = inode_path (loc->inode, NULL, (char**)&loc->path); + } else if (!uuid_is_null (loc->gfid)) { + snprintf (gfid_path, sizeof (gfid_path), "<gfid:%s>", + uuid_utoa (loc->gfid)); + loc->path = gf_strdup (gfid_path); + if (loc->path) + ret = 0; + } + return ret; +} + +void +_destroy_crawl_event_data (void *data) +{ + shd_crawl_event_t *crawl_event = NULL; + + if (!data) + goto out; + + crawl_event = (shd_crawl_event_t *)data; + GF_FREE (crawl_event->start_time_str); + GF_FREE (crawl_event->end_time_str); + +out: + return; +} + +void +_destroy_shd_event_data (void *data) +{ + shd_event_t *event = NULL; + if (!data) + goto out; + event = (shd_event_t*)data; + GF_FREE (event->path); +out: + return; +} +void +shd_cleanup_event (void *event) +{ + shd_event_t *shd_event = event; + + if (!shd_event) + goto out; + GF_FREE (shd_event->path); + GF_FREE (shd_event); +out: + return; +} + +int +afr_get_local_child (afr_self_heald_t *shd, unsigned int child_count) +{ + int i = 0; + int ret = -1; + for (i = 0; i < child_count; i++) { + if (shd->pos[i] == AFR_POS_LOCAL) { + ret = i; + break; + } + } + return ret; +} + +static int +_build_index_loc (xlator_t *this, loc_t *loc, char *name, loc_t *parent) +{ + int ret = 0; + + uuid_copy (loc->pargfid, parent->inode->gfid); + loc->path = ""; + loc->name = name; + loc->parent = inode_ref (parent->inode); + if (!loc->parent) { + loc->path = NULL; + loc_wipe (loc); + ret = -1; + } + return ret; +} + +int +_add_crawl_stats_to_dict (xlator_t *this, dict_t *output, int child, + shd_crawl_event_t *shd_event, struct timeval *tv) +{ + int ret = 0; + uint64_t count = 0; + char key[256] = {0}; + int xl_id = 0; + uint64_t healed_count = 0; + uint64_t split_brain_count = 0; + uint64_t heal_failed_count = 0; + char *start_time_str = NULL; + char *end_time_str = NULL; + char *crawl_type = NULL; + int progress = -1; + + healed_count = shd_event->healed_count; + split_brain_count = shd_event->split_brain_count; + heal_failed_count = shd_event->heal_failed_count; + start_time_str = shd_event->start_time_str; + end_time_str = shd_event->end_time_str; + crawl_type = shd_event->crawl_type; + + if (!start_time_str) { + ret = -1; + goto out; + } + + + ret = dict_get_int32 (output, this->name, &xl_id); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "xl does not have id"); + goto out; + } + + snprintf (key, sizeof (key), "statistics-%d-%d-count", xl_id, child); + ret = dict_get_uint64 (output, key, &count); + + snprintf (key, sizeof (key), "statistics_healed_cnt-%d-%d-%"PRIu64, + xl_id, child, count); + ret = dict_set_uint64(output, key, healed_count); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Could not add statistics_" + "healed_count to outout"); + goto out; + } + snprintf (key, sizeof (key), "statistics_sb_cnt-%d-%d-%"PRIu64, + xl_id, child, count); + ret = dict_set_uint64 (output, key, split_brain_count); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Could not add statistics_" + "split_brain_count to outout"); + goto out; + } + snprintf (key, sizeof (key), "statistics_crawl_type-%d-%d-%"PRIu64, + xl_id, child, count); + ret = dict_set_dynstr (output, key, gf_strdup (crawl_type)); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Could not add statistics_" + "crawl_type to output"); + goto out; + } + snprintf (key, sizeof (key), "statistics_heal_failed_cnt-%d-%d-%"PRIu64, + xl_id, child, count); + ret = dict_set_uint64 (output, key, heal_failed_count); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Could not add statistics_" + "healed_failed_count to outout"); + goto out; + } + snprintf (key, sizeof (key), "statistics_strt_time-%d-%d-%"PRIu64, + xl_id, child, count); + ret = dict_set_dynstr (output, key, gf_strdup(start_time_str)); + + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Could not add statistics_" + "crawl_start_time to outout"); + goto out; + } + + snprintf (key, sizeof (key), "statistics_end_time-%d-%d-%"PRIu64, + xl_id, child, count); + + if (!end_time_str) + end_time_str = "Could not determine the end time"; + ret = dict_set_dynstr (output, key, gf_strdup(end_time_str)); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Could not add statistics_" + "crawl_end_time to outout"); + goto out; + } + snprintf (key, sizeof (key), "statistics_inprogress-%d-%d-%"PRIu64, + xl_id, child, count); + + if (shd_event->crawl_inprogress == _gf_true) + progress = 1; + else + progress = 0; + + ret = dict_set_int32 (output, key, progress); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Could not add statistics_" + "inprogress to outout"); + goto out; + } + + snprintf (key, sizeof (key), "statistics-%d-%d-count",xl_id, child); + ret = dict_set_uint64 (output, key, count + 1); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Could not increment the " + "counter."); + goto out; + } +out: + return ret; +} + +int +_add_path_to_dict (xlator_t *this, dict_t *output, int child, char *path, + struct timeval *tv, gf_boolean_t dyn) +{ + //subkey not used for now + int ret = -1; + uint64_t count = 0; + char key[256] = {0}; + int xl_id = 0; + + ret = dict_get_int32 (output, this->name, &xl_id); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "xl does not have id"); + goto out; + } + + snprintf (key, sizeof (key), "%d-%d-count", xl_id, child); + ret = dict_get_uint64 (output, key, &count); + + snprintf (key, sizeof (key), "%d-%d-%"PRIu64, xl_id, child, count); + if (dyn) + ret = dict_set_dynstr (output, key, path); + else + ret = dict_set_str (output, key, path); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "%s: Could not add to output", + path); + goto out; + } + + if (!tv) + goto inc_count; + snprintf (key, sizeof (key), "%d-%d-%"PRIu64"-time", xl_id, + child, count); + ret = dict_set_uint32 (output, key, tv->tv_sec); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "%s: Could not set time", + path); + goto out; + } + +inc_count: + snprintf (key, sizeof (key), "%d-%d-count", xl_id, child); + ret = dict_set_uint64 (output, key, count + 1); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Could not increment count"); + goto out; + } + ret = 0; +out: + return ret; +} + +int +_get_path_from_gfid_loc (xlator_t *this, xlator_t *readdir_xl, loc_t *child, + char **fpath, gf_boolean_t *missing) +{ + dict_t *xattr = NULL; + char *path = NULL; + int ret = -1; + + ret = syncop_getxattr (readdir_xl, child, &xattr, GFID_TO_PATH_KEY); + if (ret < 0) { + if ((errno == ENOENT) && missing) + *missing = _gf_true; + goto out; + } + ret = dict_get_str (xattr, GFID_TO_PATH_KEY, &path); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to get path for " + "gfid %s", uuid_utoa (child->gfid)); + goto out; + } + path = gf_strdup (path); + if (!path) { + ret = -1; + goto out; + } + ret = 0; +out: + if (!ret) + *fpath = path; + if (xattr) + dict_unref (xattr); + return ret; +} + +int +_add_event_to_dict (circular_buffer_t *cb, void *data) +{ + int ret = 0; + shd_dump_t *dump_data = NULL; + shd_event_t *shd_event = NULL; + + dump_data = data; + shd_event = cb->data; + if (shd_event->child != dump_data->child) + goto out; + ret = _add_path_to_dict (dump_data->this, dump_data->dict, + dump_data->child, shd_event->path, &cb->tv, + _gf_false); +out: + return ret; +} + +int +_add_crawl_event_statistics_to_dict (circular_buffer_t *cb, void *data) +{ + int ret = 0; + shd_dump_t *dump_data = NULL; + shd_crawl_event_t *shd_event = NULL; + + dump_data = data; + shd_event = cb->data; + ret = _add_crawl_stats_to_dict (dump_data->this, dump_data->dict, + dump_data->child, shd_event, &cb->tv); + return ret; +} + +int +_add_eh_to_dict (xlator_t *this, eh_t *eh, dict_t *dict, int child) +{ + shd_dump_t dump_data = {0}; + + dump_data.this = this; + dump_data.dict = dict; + dump_data.child = child; + eh_dump (eh, &dump_data, _add_event_to_dict); + return 0; +} + + +int +_add_statistics_to_dict (xlator_t *this, dict_t *dict, int child) +{ + shd_dump_t dump_data = {0}; + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + + priv = this->private; + shd = &priv->shd; + + dump_data.this = this; + dump_data.dict = dict; + dump_data.child = child; + eh_dump (shd->statistics[child], &dump_data, + _add_crawl_event_statistics_to_dict); + return 0; + +} + +void +_remove_stale_index (xlator_t *this, xlator_t *readdir_xl, + loc_t *parent, char *fname) +{ + int ret = 0; + loc_t index_loc = {0}; + + ret = _build_index_loc (this, &index_loc, fname, parent); + if (ret) + goto out; + gf_log (this->name, GF_LOG_DEBUG, "Removing stale index " + "for %s on %s", index_loc.name, readdir_xl->name); + ret = syncop_unlink (readdir_xl, &index_loc); + if(ret && (errno != ENOENT)) { + gf_log(this->name, GF_LOG_ERROR, "%s: Failed to remove index " + "on %s - %s",index_loc.name, readdir_xl->name, + strerror (errno)); + } + index_loc.path = NULL; + loc_wipe (&index_loc); +out: + return; +} + +int +_count_hard_links_under_base_indices_dir (xlator_t *this, + afr_crawl_data_t *crawl_data, + gf_dirent_t *entry, loc_t *childloc, + loc_t *parentloc, struct iatt *iattr) +{ + xlator_t *readdir_xl = crawl_data->readdir_xl; + struct iatt parent = {0}; + int ret = 0; + dict_t *output = NULL; + int xl_id = 0; + char key[256] = {0}; + int child = -1; + uint64_t hardlinks = 0; + + output = crawl_data->op_data; + child = crawl_data->child; + + ret = syncop_lookup (readdir_xl, childloc, NULL, iattr, NULL, &parent); + if (ret) + goto out; + + ret = dict_get_int32 (output, this->name, &xl_id); + if (ret) + goto out; + + snprintf (key, sizeof (key), "%d-%d-hardlinks", xl_id, child); + ret = dict_get_uint64 (output, key, &hardlinks); + + /*Removing the count of base_entry under indices/base_indicies and + * entry under indices/xattrop */ + hardlinks = hardlinks + iattr->ia_nlink - 2; + ret = dict_set_uint64 (output, key, hardlinks); + if (ret) + goto out; + +out: + return ret; +} + +int +_add_summary_to_dict (xlator_t *this, afr_crawl_data_t *crawl_data, + gf_dirent_t *entry, + loc_t *childloc, loc_t *parentloc, struct iatt *iattr) +{ + dict_t *output = NULL; + xlator_t *readdir_xl = NULL; + int ret = -1; + char *path = NULL; + gf_boolean_t missing = _gf_false; + char gfid_str[64] = {0}; + + if (uuid_is_null (childloc->gfid)) + goto out; + + output = crawl_data->op_data; + readdir_xl = crawl_data->readdir_xl; + + ret = _get_path_from_gfid_loc (this, readdir_xl, childloc, &path, + &missing); + if (ret == 0) { + ret = _add_path_to_dict (this, output, crawl_data->child, path, + NULL, _gf_true); + } else if (missing) { + _remove_stale_index (this, readdir_xl, parentloc, + uuid_utoa_r (childloc->gfid, gfid_str)); + } + +out: + if (ret && path) + GF_FREE (path); + return ret; +} + +void +_crawl_post_sh_action (xlator_t *this, loc_t *parent, loc_t *child, + int32_t op_ret, int32_t op_errno, dict_t *xattr_rsp, + afr_crawl_data_t *crawl_data) +{ + int ret = 0; + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + eh_t *eh = NULL; + char *path = NULL; + char gfid_str[64] = {0}; + shd_event_t *event = NULL; + int32_t sh_failed = 0; + gf_boolean_t split_brain = 0; + int32_t actual_sh_done = 0; + shd_crawl_event_t **shd_crawl_event = NULL; + + priv = this->private; + shd = &priv->shd; + if (crawl_data->crawl == INDEX) { + if ((op_ret < 0) && (op_errno == ENOENT)) { + _remove_stale_index (this, crawl_data->readdir_xl, + parent, uuid_utoa_r (child->gfid, + gfid_str)); + goto out; + } + ret = _get_path_from_gfid_loc (this, crawl_data->readdir_xl, + child, &path, NULL); + if (ret) + goto out; + } else { + path = gf_strdup (child->path); + if (!path) { + ret = -1; + goto out; + } + } + + if (xattr_rsp) { + ret = dict_get_int32 (xattr_rsp, "sh-failed", &sh_failed); + ret = dict_get_int32 (xattr_rsp, "actual-sh-done", &actual_sh_done); + } + + shd_crawl_event = (shd_crawl_event_t**)(shd->crawl_events); + + split_brain = afr_is_split_brain (this, child->inode); + if ((op_ret < 0 && op_errno == EIO) || split_brain) { + eh = shd->split_brain; + shd_crawl_event[crawl_data->child]->split_brain_count += 1; + } else if ((op_ret < 0) || sh_failed) { + eh = shd->heal_failed; + shd_crawl_event[crawl_data->child]->heal_failed_count += 1; + } else if (actual_sh_done == 1) { + eh = shd->healed; + shd_crawl_event[crawl_data->child]->healed_count += 1; + } + ret = -1; + + if (eh != NULL) { + event = GF_CALLOC (1, sizeof (*event), gf_afr_mt_shd_event_t); + if (!event) + goto out; + event->child = crawl_data->child; + event->path = path; + + ret = eh_save_history (eh, event); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, "%s:Failed to save " + "to event history, (%d, %s)", path, op_ret, + strerror (op_errno)); + + goto out; + } + } else { + gf_log (this->name, GF_LOG_DEBUG, "%s:Self heal already done ", + path); + + } + ret = 0; +out: + if (ret && path) + GF_FREE (path); + return; +} + +int +_link_inode_update_loc (xlator_t *this, loc_t *loc, struct iatt *iattr) +{ + inode_t *link_inode = NULL; + int ret = -1; + + link_inode = inode_link (loc->inode, NULL, NULL, iattr); + if (link_inode == NULL) { + gf_log (this->name, GF_LOG_ERROR, "inode link failed " + "on the inode (%s)", uuid_utoa (iattr->ia_gfid)); + goto out; + } + inode_unref (loc->inode); + loc->inode = link_inode; + ret = 0; +out: + return ret; +} + +int +_self_heal_entry (xlator_t *this, afr_crawl_data_t *crawl_data, gf_dirent_t *entry, + loc_t *child, loc_t *parent, struct iatt *iattr) +{ + struct iatt parentbuf = {0}; + int ret = 0; + dict_t *xattr_rsp = NULL; + dict_t *xattr_req = NULL; + + xattr_req = dict_new (); + if (!xattr_req) { + errno = ENOMEM; + ret = -1; + goto out; + } + + ret = dict_set_int32 (xattr_req, "allow-sh-for-running-transaction", 1); + + gf_log (this->name, GF_LOG_DEBUG, "lookup %s", child->path); + + ret = syncop_lookup (this, child, xattr_req, + iattr, &xattr_rsp, &parentbuf); + _crawl_post_sh_action (this, parent, child, ret, errno, xattr_rsp, + crawl_data); + if (xattr_rsp) + dict_unref (xattr_rsp); + if (ret == 0) + ret = _link_inode_update_loc (this, child, iattr); + +out: + if (xattr_req) + dict_unref(xattr_req); + return ret; +} + +static int +afr_crawl_done (int ret, call_frame_t *sync_frame, void *data) +{ + GF_FREE (data); + STACK_DESTROY (sync_frame->root); + return 0; +} + +void +_do_self_heal_on_subvol (xlator_t *this, int child, afr_crawl_type_t crawl) +{ + afr_start_crawl (this, child, crawl, _self_heal_entry, + NULL, _gf_true, STOP_CRAWL_ON_SINGLE_SUBVOL, + afr_crawl_done); +} + +gf_boolean_t +_crawl_proceed (xlator_t *this, int child, int crawl_flags, char **reason) +{ + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + gf_boolean_t proceed = _gf_false; + char *msg = NULL; + + priv = this->private; + shd = &priv->shd; + if (!shd->enabled) { + msg = "Self-heal daemon is not enabled"; + gf_log (this->name, GF_LOG_DEBUG, "%s", msg); + goto out; + } + if (!priv->child_up[child]) { + gf_log (this->name, GF_LOG_DEBUG, "Stopping crawl for %s , " + "subvol went down", priv->children[child]->name); + msg = "Brick is Not connected"; + goto out; + } + + if (crawl_flags & STOP_CRAWL_ON_SINGLE_SUBVOL) { + if (afr_up_children_count (priv->child_up, + priv->child_count) < 2) { + gf_log (this->name, GF_LOG_DEBUG, "Stopping crawl as " + "< 2 children are up"); + msg = "< 2 bricks in replica are running"; + goto out; + } + } + proceed = _gf_true; +out: + if (reason) + *reason = msg; + return proceed; +} + +int +_do_crawl_op_on_local_subvols (xlator_t *this, afr_crawl_type_t crawl, + shd_crawl_op op, dict_t *output) +{ + afr_private_t *priv = NULL; + char *status = NULL; + char *subkey = NULL; + char key[256] = {0}; + shd_pos_t pos_data = {0}; + int op_ret = -1; + int xl_id = -1; + int i = 0; + int ret = 0; + int crawl_flags = 0; + + priv = this->private; + if (op == HEAL) + crawl_flags |= STOP_CRAWL_ON_SINGLE_SUBVOL; + + if (output) { + ret = dict_get_int32 (output, this->name, &xl_id); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Invalid input, " + "translator-id is not available"); + goto out; + } + } + pos_data.this = this; + subkey = "status"; + for (i = 0; i < priv->child_count; i++) { + if (_crawl_proceed (this, i, crawl_flags, &status)) { + pos_data.child = i; + /* + * We're already in a synctask in this case, so we + * don't need to defer through a second (and in fact + * that can cause deadlock). Just call straight + * through instead. + */ + ret = afr_find_child_position(pos_data.this, + pos_data.child, + &pos_data.pos); + if (ret) { + status = "Not able to find brick location"; + } else if (pos_data.pos == AFR_POS_REMOTE) { + status = "brick is remote"; + } else { + op_ret = 0; + if (op == HEAL) { + status = "Started self-heal"; + _do_self_heal_on_subvol (this, i, + crawl); + } else if (output && (op == INFO)) { + status = ""; + afr_start_crawl (this, i, INDEX, + _add_summary_to_dict, + output, _gf_false, 0, + NULL); + } else if (output && + (op == STATISTICS_TO_BE_HEALED)) { + status = ""; + afr_start_crawl (this, i, + INDEX_TO_BE_HEALED, + _count_hard_links_under_base_indices_dir, + output, _gf_false, + 0, NULL); + } + } + if (output) { + snprintf (key, sizeof (key), "%d-%d-%s", xl_id, + i, subkey); + ret = dict_set_str (output, key, status); + } + if (!op_ret && (crawl == FULL)) + break; + } + if (output) { + snprintf (key, sizeof (key), "%d-%d-%s", xl_id, i, + subkey); + ret = dict_set_str (output, key, status); + } + } +out: + return op_ret; +} + +int +_do_self_heal_on_local_subvols (xlator_t *this, afr_crawl_type_t crawl, + dict_t *output) +{ + return _do_crawl_op_on_local_subvols (this, crawl, HEAL, output); +} + +int +_get_index_summary_on_local_subvols (xlator_t *this, dict_t *output) +{ + return _do_crawl_op_on_local_subvols (this, INDEX, INFO, output); +} + +void +afr_fill_completed_crawl_statistics_to_dict (xlator_t *this, dict_t *dict) +{ + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + int i = 0; + priv = this->private; + shd= &priv->shd; + for (i = 0; i < priv->child_count; i++) { + if (shd->pos[i] != AFR_POS_LOCAL) + continue; + _add_statistics_to_dict (this, dict, i); + } + + return ; +} + +static void +reset_crawl_event (shd_crawl_event_t *crawl_event) +{ + crawl_event->healed_count = 0; + crawl_event->split_brain_count = 0; + crawl_event->heal_failed_count = 0; + GF_FREE (crawl_event->start_time_str); + crawl_event->start_time_str = NULL; + crawl_event->end_time_str = NULL; + crawl_event->crawl_type = NULL; + crawl_event->crawl_inprogress = _gf_false; + return; +} + +static void +afr_copy_crawl_event_struct (shd_crawl_event_t *src, shd_crawl_event_t *dst) +{ + dst->healed_count = src->healed_count; + dst->split_brain_count = src->split_brain_count; + dst->heal_failed_count = src->heal_failed_count; + dst->start_time_str = gf_strdup (src->start_time_str); + dst->end_time_str = "Crawl is already in progress"; + dst->crawl_type = src->crawl_type; + dst->crawl_inprogress = _gf_true; + return; +} + +static int +afr_fill_crawl_statistics_of_running_crawl(xlator_t *this, dict_t *dict) +{ + shd_crawl_event_t *evnt = NULL; + int ret = 0; + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + int i = 0; + priv = this->private; + shd = &priv->shd; + + evnt = GF_CALLOC (1, sizeof (shd_crawl_event_t), + gf_afr_mt_shd_crawl_event_t); + if (!evnt) { + ret = -1; + goto out; + } + LOCK (&priv->lock); + { + for (i = 0; i < priv->child_count; i++) { + if (shd->pos[i] != AFR_POS_LOCAL) + continue; + + reset_crawl_event (evnt); + + if (!shd->crawl_events[i]) { + continue; + } + + afr_copy_crawl_event_struct (shd->crawl_events[i], + evnt); + _add_crawl_stats_to_dict (this, dict, i, evnt, NULL); + + } + } + UNLOCK (&priv->lock); + reset_crawl_event (evnt); + GF_FREE (evnt); + +out: + return ret; +} + +static int +_add_local_subvols_crawl_statistics_to_dict (xlator_t *this, dict_t *dict) +{ + int ret = 0; + afr_fill_completed_crawl_statistics_to_dict (this, dict); + ret = afr_fill_crawl_statistics_of_running_crawl (this, dict); + return ret; +} +int +_add_local_subvols_eh_to_dict (xlator_t *this, eh_t *eh, dict_t *dict) +{ + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + int i = 0; + + priv = this->private; + shd = &priv->shd; + + for (i = 0; i < priv->child_count; i++) { + if (shd->pos[i] != AFR_POS_LOCAL) + continue; + _add_eh_to_dict (this, eh, dict, i); + } + return 0; +} + +int +afr_xl_op (xlator_t *this, dict_t *input, dict_t *output) +{ + gf_xl_afr_op_t op = GF_AFR_OP_INVALID; + int ret = 0; + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + int xl_id = 0; + + priv = this->private; + shd = &priv->shd; + + ret = dict_get_int32 (input, "xl-op", (int32_t*)&op); + if (ret) + goto out; + ret = dict_get_int32 (input, this->name, &xl_id); + if (ret) + goto out; + ret = dict_set_int32 (output, this->name, xl_id); + if (ret) + goto out; + switch (op) { + case GF_AFR_OP_HEAL_INDEX: + ret = _do_self_heal_on_local_subvols (this, INDEX, output); + break; + case GF_AFR_OP_HEAL_FULL: + ret = _do_self_heal_on_local_subvols (this, FULL, output); + break; + case GF_AFR_OP_INDEX_SUMMARY: + (void)_get_index_summary_on_local_subvols (this, output); + ret = 0; + break; + case GF_AFR_OP_HEALED_FILES: + ret = _add_local_subvols_eh_to_dict (this, shd->healed, output); + break; + case GF_AFR_OP_HEAL_FAILED_FILES: + ret = _add_local_subvols_eh_to_dict (this, shd->heal_failed, + output); + break; + case GF_AFR_OP_SPLIT_BRAIN_FILES: + ret = _add_local_subvols_eh_to_dict (this, shd->split_brain, + output); + break; + case GF_AFR_OP_STATISTICS: + ret = _add_local_subvols_crawl_statistics_to_dict (this, output); + break; + case GF_AFR_OP_STATISTICS_HEAL_COUNT: + case GF_AFR_OP_STATISTICS_HEAL_COUNT_PER_REPLICA: + ret = _do_crawl_op_on_local_subvols (this, INDEX_TO_BE_HEALED, + STATISTICS_TO_BE_HEALED, + output); + break; + default: + gf_log (this->name, GF_LOG_ERROR, "Unknown set op %d", op); + break; + } +out: + dict_del (output, this->name); + return ret; +} + +void +afr_poll_self_heal (void *data) +{ + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + struct timespec timeout = {0}; + xlator_t *this = NULL; + long child = (long)data; + gf_timer_t *old_timer = NULL; + gf_timer_t *new_timer = NULL; + shd_pos_t pos_data = {0}; + int ret = 0; + + this = THIS; + priv = this->private; + shd = &priv->shd; + + if (shd->pos[child] == AFR_POS_UNKNOWN) { + pos_data.this = this; + pos_data.child = child; + ret = synctask_new (this->ctx->env, + afr_syncop_find_child_position, + NULL, NULL, &pos_data); + if (!ret) + shd->pos[child] = pos_data.pos; + } + if (shd->enabled && (shd->pos[child] == AFR_POS_LOCAL)) + _do_self_heal_on_subvol (this, child, INDEX); + timeout.tv_sec = shd->timeout; + timeout.tv_nsec = 0; + //notify and previous timer should be synchronized. + LOCK (&priv->lock); + { + old_timer = shd->timer[child]; + if (shd->pos[child] == AFR_POS_REMOTE) + goto unlock; + shd->timer[child] = gf_timer_call_after (this->ctx, timeout, + afr_poll_self_heal, + data); + new_timer = shd->timer[child]; + } +unlock: + UNLOCK (&priv->lock); + + if (old_timer) + gf_timer_call_cancel (this->ctx, old_timer); + if (!new_timer && (shd->pos[child] != AFR_POS_REMOTE)) { + gf_log (this->name, GF_LOG_WARNING, + "Could not create self-heal polling timer for %s", + priv->children[child]->name); + } + return; +} + +static int +afr_handle_child_up (int ret, call_frame_t *sync_frame, void *data) +{ + afr_self_heald_t *shd = NULL; + shd_pos_t *pos_data = data; + afr_private_t *priv = NULL; + + if (ret) + goto out; + + priv = pos_data->this->private; + shd = &priv->shd; + shd->pos[pos_data->child] = pos_data->pos; + if (pos_data->pos != AFR_POS_REMOTE) + afr_poll_self_heal ((void*)(long)pos_data->child); + _do_self_heal_on_local_subvols (THIS, INDEX, NULL); +out: + GF_FREE (data); + return 0; +} + +void +afr_proactive_self_heal (void *data) +{ + xlator_t *this = NULL; + long child = (long)data; + shd_pos_t *pos_data = NULL; + int ret = 0; + + this = THIS; + + //Position of brick could have changed and it could be local now. + //Compute the position again + pos_data = GF_CALLOC (1, sizeof (*pos_data), gf_afr_mt_pos_data_t); + if (!pos_data) + goto out; + pos_data->this = this; + pos_data->child = child; + ret = synctask_new (this->ctx->env, afr_syncop_find_child_position, + afr_handle_child_up, NULL, pos_data); + if (ret) + goto out; +out: + return; +} + +static int +get_pathinfo_host (char *pathinfo, char *hostname, size_t size) +{ + char *start = NULL; + char *end = NULL; + int ret = -1; + int i = 0; + + if (!pathinfo) + goto out; + + start = strchr (pathinfo, ':'); + if (!start) + goto out; + end = strrchr (pathinfo, ':'); + if (start == end) + goto out; + + memset (hostname, 0, size); + i = 0; + while (++start != end) + hostname[i++] = *start; + ret = 0; +out: + return ret; +} + +int +afr_local_pathinfo (char *pathinfo, gf_boolean_t *local) +{ + int ret = 0; + char pathinfohost[1024] = {0}; + char localhost[1024] = {0}; + xlator_t *this = THIS; + + *local = _gf_false; + ret = get_pathinfo_host (pathinfo, pathinfohost, sizeof (pathinfohost)); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Invalid pathinfo: %s", + pathinfo); + goto out; + } + + ret = gethostname (localhost, sizeof (localhost)); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "gethostname() failed, " + "reason: %s", strerror (errno)); + goto out; + } + + if (!strcmp (localhost, pathinfohost)) + *local = _gf_true; +out: + return ret; +} + +int +afr_crawl_build_start_loc (xlator_t *this, afr_crawl_data_t *crawl_data, + loc_t *dirloc) +{ + afr_private_t *priv = NULL; + dict_t *xattr = NULL; + void *index_gfid = NULL; + void *base_indices_holder_vgfid = NULL; + loc_t rootloc = {0}; + struct iatt iattr = {0}; + struct iatt parent = {0}; + int ret = 0; + xlator_t *readdir_xl = crawl_data->readdir_xl; + + priv = this->private; + if (crawl_data->crawl == FULL) { + afr_build_root_loc (this, dirloc); + } else if (crawl_data->crawl == INDEX) { + afr_build_root_loc (this, &rootloc); + ret = syncop_getxattr (readdir_xl, &rootloc, &xattr, + GF_XATTROP_INDEX_GFID); + if (ret < 0) + goto out; + ret = dict_get_ptr (xattr, GF_XATTROP_INDEX_GFID, &index_gfid); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, "failed to get index " + "dir gfid on %s", readdir_xl->name); + goto out; + } + if (!index_gfid) { + gf_log (this->name, GF_LOG_ERROR, "index gfid empty " + "on %s", readdir_xl->name); + ret = -1; + goto out; + } + uuid_copy (dirloc->gfid, index_gfid); + dirloc->path = ""; + dirloc->inode = inode_new (priv->root_inode->table); + ret = syncop_lookup (readdir_xl, dirloc, NULL, + &iattr, NULL, &parent); + if (ret < 0) { + if (errno != ENOENT) { + gf_log (this->name, GF_LOG_ERROR, "lookup " + "failed on index dir on %s - (%s)", + readdir_xl->name, strerror (errno)); + } + goto out; + } + ret = _link_inode_update_loc (this, dirloc, &iattr); + if (ret) + goto out; + } else if (crawl_data->crawl == INDEX_TO_BE_HEALED) { + afr_build_root_loc (this, &rootloc); + ret = syncop_getxattr (readdir_xl, &rootloc, &xattr, + GF_BASE_INDICES_HOLDER_GFID); + if (ret < 0) + goto out; + ret = dict_get_ptr (xattr, GF_BASE_INDICES_HOLDER_GFID, + &base_indices_holder_vgfid); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, "index gfid empty " + "on %s", readdir_xl->name); + ret = -1; + goto out; + } + if (!base_indices_holder_vgfid) { + gf_log (this->name, GF_LOG_ERROR, "Base indices holder" + "virtual gfid is null on %s", readdir_xl->name); + ret = -1; + goto out; + } + uuid_copy (dirloc->gfid, base_indices_holder_vgfid); + dirloc->path = ""; + dirloc->inode = inode_new (priv->root_inode->table); + ret = syncop_lookup (readdir_xl, dirloc, NULL, &iattr, NULL, + &parent); + if (ret < 0) { + if (errno != ENOENT) { + gf_log (this->name, GF_LOG_ERROR, "lookup " + "failed for base_indices_holder dir" + " on %s - (%s)", readdir_xl->name, + strerror (errno)); + + } else { + gf_log (this->name, GF_LOG_ERROR, "base_indices" + "_holder is not yet created."); + } + goto out; + } + ret = _link_inode_update_loc (this, dirloc, &iattr); + if (ret) + goto out; + } + ret = 0; +out: + if (xattr) + dict_unref (xattr); + loc_wipe (&rootloc); + return ret; +} + +int +afr_crawl_opendir (xlator_t *this, afr_crawl_data_t *crawl_data, fd_t **dirfd, + loc_t *dirloc) +{ + fd_t *fd = NULL; + int ret = 0; + + if (crawl_data->crawl == FULL) { + fd = fd_create (dirloc->inode, crawl_data->pid); + if (!fd) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to create fd for %s", dirloc->path); + ret = -1; + goto out; + } + + ret = syncop_opendir (crawl_data->readdir_xl, dirloc, fd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "opendir failed on %s", dirloc->path); + goto out; + } + } else { + fd = fd_anonymous (dirloc->inode); + } + ret = 0; +out: + if (!ret) + *dirfd = fd; + return ret; +} + +xlator_t* +afr_crawl_readdir_xl_get (xlator_t *this, afr_crawl_data_t *crawl_data) +{ + afr_private_t *priv = this->private; + + if (crawl_data->crawl == FULL) { + return this; + } else { + return priv->children[crawl_data->child]; + } + return NULL; +} + +int +afr_crawl_build_child_loc (xlator_t *this, loc_t *child, loc_t *parent, + gf_dirent_t *entry, afr_crawl_data_t *crawl_data) +{ + int ret = -1; + afr_private_t *priv = NULL; + + priv = this->private; + if (crawl_data->crawl == FULL) { + ret = afr_build_child_loc (this, child, parent, entry->d_name); + } else if (crawl_data->crawl == INDEX_TO_BE_HEALED) { + ret = _build_index_loc (this, child, entry->d_name, parent); + if (ret) + goto out; + child->inode = inode_new (priv->root_inode->table); + if (!child->inode) { + ret = -1; + goto out; + } + child->path = NULL; + } else { + child->inode = inode_new (priv->root_inode->table); + if (!child->inode) + goto out; + uuid_parse (entry->d_name, child->gfid); + ret = _loc_assign_gfid_path (child); + } +out: + return ret; +} + +static int +_process_entries (xlator_t *this, loc_t *parentloc, gf_dirent_t *entries, + off_t *offset, afr_crawl_data_t *crawl_data) +{ + gf_dirent_t *entry = NULL; + gf_dirent_t *tmp = NULL; + int ret = 0; + loc_t entry_loc = {0}; + fd_t *fd = NULL; + struct iatt iattr = {0}; + + list_for_each_entry_safe (entry, tmp, &entries->list, list) { + if (!_crawl_proceed (this, crawl_data->child, + crawl_data->crawl_flags, NULL)) { + ret = -1; + goto out; + } + *offset = entry->d_off; + if (IS_ENTRY_CWD (entry->d_name) || + IS_ENTRY_PARENT (entry->d_name)) + continue; + if ((crawl_data->crawl == FULL) && + uuid_is_null (entry->d_stat.ia_gfid)) { + gf_log (this->name, GF_LOG_WARNING, "%s/%s: No " + "gfid present skipping", + parentloc->path, entry->d_name); + continue; + } + + loc_wipe (&entry_loc); + ret = afr_crawl_build_child_loc (this, &entry_loc, parentloc, + entry, crawl_data); + if (ret) + goto out; + + ret = crawl_data->process_entry (this, crawl_data, entry, + &entry_loc, parentloc, &iattr); + + if (crawl_data->crawl == INDEX_TO_BE_HEALED && ret) { + goto out; + } else if (ret) { + continue; + } + + if ((crawl_data->crawl == INDEX) || + (crawl_data->crawl == INDEX_TO_BE_HEALED)) + continue; + + if (!IA_ISDIR (iattr.ia_type)) + continue; + fd = NULL; + ret = afr_crawl_opendir (this, crawl_data, &fd, &entry_loc); + if (ret) + continue; + ret = _crawl_directory (fd, &entry_loc, crawl_data); + if (fd) + fd_unref (fd); + } + ret = 0; +out: + if ((crawl_data->crawl == INDEX_TO_BE_HEALED) && ret) { + gf_log (this->name, GF_LOG_ERROR,"Failed to get the hardlink " + "count"); + } + loc_wipe (&entry_loc); + return ret; +} + +static int +_crawl_directory (fd_t *fd, loc_t *loc, afr_crawl_data_t *crawl_data) +{ + xlator_t *this = NULL; + off_t offset = 0; + gf_dirent_t entries; + int ret = 0; + gf_boolean_t free_entries = _gf_false; + xlator_t *readdir_xl = crawl_data->readdir_xl; + + INIT_LIST_HEAD (&entries.list); + this = THIS; + + GF_ASSERT (loc->inode); + + if (crawl_data->crawl == FULL) + gf_log (this->name, GF_LOG_DEBUG, "crawling %s", loc->path); + else + gf_log (this->name, GF_LOG_DEBUG, "crawling INDEX %s", + uuid_utoa (loc->gfid)); + + while (1) { + if (crawl_data->crawl == FULL) + ret = syncop_readdirp (readdir_xl, fd, 131072, offset, + NULL, &entries); + else + ret = syncop_readdir (readdir_xl, fd, 131072, offset, + &entries); + if (ret <= 0) + break; + ret = 0; + free_entries = _gf_true; + + if (!_crawl_proceed (this, crawl_data->child, + crawl_data->crawl_flags, NULL)) { + ret = -1; + goto out; + } + if (list_empty (&entries.list)) + goto out; + + ret = _process_entries (this, loc, &entries, &offset, + crawl_data); + if ((ret < 0) && (crawl_data->crawl == INDEX_TO_BE_HEALED)) { + goto out; + } + gf_dirent_free (&entries); + free_entries = _gf_false; + } + ret = 0; +out: + if (free_entries) + gf_dirent_free (&entries); + return ret; +} + +static char* +position_str_get (afr_child_pos_t pos) +{ + switch (pos) { + case AFR_POS_UNKNOWN: + return "unknown"; + case AFR_POS_LOCAL: + return "local"; + case AFR_POS_REMOTE: + return "remote"; + } + return NULL; +} + +int +afr_find_child_position (xlator_t *this, int child, afr_child_pos_t *pos) +{ + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + dict_t *xattr_rsp = NULL; + loc_t loc = {0}; + int ret = 0; + char *node_uuid = NULL; + + priv = this->private; + shd = &priv->shd; + + afr_build_root_loc (this, &loc); + + ret = syncop_getxattr (priv->children[child], &loc, &xattr_rsp, + GF_XATTR_NODE_UUID_KEY); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, "getxattr failed on %s - " + "(%s)", priv->children[child]->name, strerror (errno)); + goto out; + } + + ret = dict_get_str (xattr_rsp, GF_XATTR_NODE_UUID_KEY, &node_uuid); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "node-uuid key not found on " + "child %s", priv->children[child]->name); + goto out; + } + + if (!strcmp (node_uuid, shd->node_uuid)) + *pos = AFR_POS_LOCAL; + else + *pos = AFR_POS_REMOTE; + + gf_log (this->name, GF_LOG_DEBUG, "child %s is %s", + priv->children[child]->name, position_str_get (*pos)); +out: + if (ret) + *pos = AFR_POS_UNKNOWN; + loc_wipe (&loc); + return ret; +} + +int +afr_syncop_find_child_position (void *data) +{ + shd_pos_t *pos_data = data; + int ret = 0; + + ret = afr_find_child_position (pos_data->this, pos_data->child, + &pos_data->pos); + return ret; +} + +static int +afr_dir_crawl (void *data) +{ + xlator_t *this = NULL; + int ret = -1; + xlator_t *readdir_xl = NULL; + fd_t *fd = NULL; + loc_t dirloc = {0}; + afr_crawl_data_t *crawl_data = data; + + this = THIS; + + if (!_crawl_proceed (this, crawl_data->child, crawl_data->crawl_flags, + NULL)) + goto out; + + readdir_xl = afr_crawl_readdir_xl_get (this, crawl_data); + if (!readdir_xl) + goto out; + crawl_data->readdir_xl = readdir_xl; + + ret = afr_crawl_build_start_loc (this, crawl_data, &dirloc); + if (ret) + goto out; + + ret = afr_crawl_opendir (this, crawl_data, &fd, &dirloc); + if (ret) { + if (crawl_data->crawl == INDEX_TO_BE_HEALED) { + gf_log (this->name, GF_LOG_ERROR, "Failed to open base_" + "indices_holder"); + } + goto out; + } + + ret = _crawl_directory (fd, &dirloc, crawl_data); + if (ret) + gf_log (this->name, GF_LOG_ERROR, "Crawl failed on %s", + readdir_xl->name); + else + gf_log (this->name, GF_LOG_DEBUG, "Crawl completed " + "on %s", readdir_xl->name); + if (crawl_data->crawl == INDEX) + dirloc.path = NULL; +out: + if (fd) + fd_unref (fd); + if ((crawl_data->crawl == INDEX) || + (crawl_data->crawl == INDEX_TO_BE_HEALED )) + dirloc.path = NULL; + loc_wipe (&dirloc); + return ret; +} + +char * +get_crawl_type_in_string (afr_crawl_type_t crawl) +{ + char *index = "INDEX"; + char *full = "FULL"; + char *crawl_type = NULL; + + if (crawl == INDEX){ + crawl_type = index; + } else if (crawl == FULL) { + crawl_type = full; + } + + return crawl_type; +} + +static int +afr_allocate_crawl_event (xlator_t *this, int child, afr_crawl_type_t crawl) +{ + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + int ret = 0; + shd_crawl_event_t *crawl_event = NULL; + time_t get_time = 0; + + priv = this->private; + shd = &priv->shd; + + crawl_event = GF_CALLOC (sizeof (shd_crawl_event_t), 1, + gf_afr_mt_shd_crawl_event_t); + if (!crawl_event) { + ret = -1; + goto out; + } + + get_time = time(NULL); + if (get_time == ((time_t)-1)) { + ret = -1; + goto out; + } + + crawl_event->start_time_str = gf_strdup (ctime(&get_time)); + + crawl_event->crawl_type = get_crawl_type_in_string (crawl); + if (!crawl_event->crawl_type) { + ret = -1; + goto out; + } + LOCK (&priv->lock); + { + shd->crawl_events[child] = crawl_event; + } + UNLOCK (&priv->lock); + ret = 0; +out: + return ret; + +} + +static int +afr_put_crawl_event_in_eh (xlator_t *this, int child) +{ + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + int ret = 0; + time_t get_time = 0; + shd_crawl_event_t **crawl_event = NULL; + + priv = this->private; + shd = &priv->shd; + + get_time = time(NULL); + if (get_time == ((time_t)-1)) { + ret = -1; + goto out; + } + crawl_event = (shd_crawl_event_t**)shd->crawl_events; + LOCK (&priv->lock); + { + crawl_event[child]->end_time_str = gf_strdup (ctime(&get_time)); + ret = eh_save_history (shd->statistics[child], + crawl_event[child]); + crawl_event[child] = NULL; + } + UNLOCK (&priv->lock); +out: + return ret; +} + +static int +afr_dir_exclusive_crawl (void *data) +{ + afr_private_t *priv = NULL; + afr_self_heald_t *shd = NULL; + gf_boolean_t crawl = _gf_false; + int ret = 0; + int child = -1; + xlator_t *this = NULL; + afr_crawl_data_t *crawl_data = data; + + this = THIS; + priv = this->private; + shd = &priv->shd; + child = crawl_data->child; + + LOCK (&priv->lock); + { + if (shd->inprogress[child]) { + if (shd->pending[child] != FULL) + shd->pending[child] = crawl_data->crawl; + } else { + shd->inprogress[child] = _gf_true; + crawl = _gf_true; + } + } + UNLOCK (&priv->lock); + + if (!crawl) { + gf_log (this->name, GF_LOG_INFO, "Another crawl is in progress " + "for %s", priv->children[child]->name); + goto out; + } + + do { + ret = afr_allocate_crawl_event (this, child, crawl_data->crawl); + if (ret) + goto out; + afr_dir_crawl (data); + + ret = afr_put_crawl_event_in_eh (this, child); + if (ret < 0) + goto out; + + LOCK (&priv->lock); + { + if (shd->pending[child] != NONE) { + crawl_data->crawl = shd->pending[child]; + shd->pending[child] = NONE; + } else { + shd->inprogress[child] = _gf_false; + crawl = _gf_false; + } + } + UNLOCK (&priv->lock); + } while (crawl); +out: + return ret; +} + +void +afr_start_crawl (xlator_t *this, int idx, afr_crawl_type_t crawl, + process_entry_cbk_t process_entry, void *op_data, + gf_boolean_t exclusive, int crawl_flags, + afr_crawl_done_cbk_t crawl_done) +{ + afr_private_t *priv = NULL; + call_frame_t *frame = NULL; + afr_crawl_data_t *crawl_data = NULL; + int ret = 0; + int (*crawler) (void*) = NULL; + + priv = this->private; + + frame = create_frame (this, this->ctx->pool); + if (!frame) + goto out; + + afr_set_lk_owner (frame, this, frame->root); + afr_set_low_priority (frame); + crawl_data = GF_CALLOC (1, sizeof (*crawl_data), + gf_afr_mt_crawl_data_t); + if (!crawl_data) + goto out; + crawl_data->process_entry = process_entry; + crawl_data->child = idx; + crawl_data->pid = frame->root->pid; + crawl_data->crawl = crawl; + crawl_data->op_data = op_data; + crawl_data->crawl_flags = crawl_flags; + gf_log (this->name, GF_LOG_DEBUG, "starting crawl %d for %s", + crawl_data->crawl, priv->children[idx]->name); + + if (exclusive) + crawler = afr_dir_exclusive_crawl; + else + crawler = afr_dir_crawl; + ret = synctask_new (this->ctx->env, crawler, + crawl_done, frame, crawl_data); + if (ret) + gf_log (this->name, GF_LOG_ERROR, "afr crawl failed for child" + " %d with ret %d", idx, ret); +out: + return; +} + +void +afr_build_root_loc (xlator_t *this, loc_t *loc) +{ + afr_private_t *priv = NULL; + + priv = this->private; + loc->path = gf_strdup ("/"); + loc->name = ""; + loc->inode = inode_ref (priv->root_inode); + uuid_copy (loc->gfid, loc->inode->gfid); +} + +int +afr_set_root_gfid (dict_t *dict) +{ + uuid_t gfid; + int ret = 0; + + memset (gfid, 0, 16); + gfid[15] = 1; + + ret = afr_set_dict_gfid (dict, gfid); + + return ret; +} diff --git a/xlators/cluster/afr/src/afr-self-heald.h b/xlators/cluster/afr/src/afr-self-heald.h new file mode 100644 index 000000000..e0c083754 --- /dev/null +++ b/xlators/cluster/afr/src/afr-self-heald.h @@ -0,0 +1,65 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#ifndef __AFR_SELF_HEALD_H__ +#define __AFR_SELF_HEALD_H__ +#include "xlator.h" + +#define IS_ROOT_PATH(path) (!strcmp (path, "/")) +#define IS_ENTRY_CWD(entry) (!strcmp (entry, ".")) +#define IS_ENTRY_PARENT(entry) (!strcmp (entry, "..")) +#define AFR_ALL_CHILDREN -1 + +typedef struct afr_crawl_data_ { + int child; + pid_t pid; + afr_crawl_type_t crawl; + xlator_t *readdir_xl; + void *op_data; + int crawl_flags; + int (*process_entry) (xlator_t *this, struct afr_crawl_data_ *crawl_data, + gf_dirent_t *entry, loc_t *child, loc_t *parent, + struct iatt *iattr); +} afr_crawl_data_t; + +typedef struct crawl_event_stats_ { + uint64_t healed_count; + uint64_t split_brain_count; + uint64_t heal_failed_count; + char *start_time_str; + char *end_time_str; + char *crawl_type; + gf_boolean_t crawl_inprogress; +} shd_crawl_event_t; + +void _destroy_crawl_event_data (void *data); +void _destroy_shd_event_data (void *data); + +typedef int (*process_entry_cbk_t) (xlator_t *this, afr_crawl_data_t *crawl_data, + gf_dirent_t *entry, loc_t *child, loc_t *parent, + struct iatt *iattr); + +void afr_build_root_loc (xlator_t *this, loc_t *loc); + +int afr_set_root_gfid (dict_t *dict); + +void +afr_proactive_self_heal (void *data); + +int +afr_xl_op (xlator_t *this, dict_t *input, dict_t *output); + +/* + * In addition to its self-heal use, this is used to find a local default + * read_child. + */ +int +afr_local_pathinfo (char *pathinfo, gf_boolean_t *local); +#endif /* __AFR_SELF_HEALD_H__ */ diff --git a/xlators/cluster/afr/src/afr-transaction.c b/xlators/cluster/afr/src/afr-transaction.c index 828a6e9ab..20306e469 100644 --- a/xlators/cluster/afr/src/afr-transaction.c +++ b/xlators/cluster/afr/src/afr-transaction.c @@ -1,24 +1,17 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> This file is part of GlusterFS. - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #include "dict.h" #include "byte-order.h" +#include "common-utils.h" +#include "timer.h" #include "afr.h" #include "afr-transaction.h" @@ -26,38 +19,90 @@ #include <signal.h> +#define LOCKED_NO 0x0 /* no lock held */ +#define LOCKED_YES 0x1 /* for DATA, METADATA, ENTRY and higher_path + of RENAME */ +#define LOCKED_LOWER 0x2 /* for lower_path of RENAME */ + +afr_fd_ctx_t * +__afr_fd_ctx_get (fd_t *fd, xlator_t *this) +{ + uint64_t ctx = 0; + int ret = 0; + afr_fd_ctx_t *fd_ctx = NULL; + int i = 0; + afr_private_t *priv = NULL; + + priv = this->private; + + ret = __fd_ctx_get (fd, this, &ctx); + + if (ret < 0 && fd_is_anonymous (fd)) { + ret = __afr_fd_ctx_set (this, fd); + if (ret < 0) + goto out; + + ret = __fd_ctx_get (fd, this, &ctx); + if (ret < 0) + goto out; + + fd_ctx = (afr_fd_ctx_t *)(long) ctx; + for (i = 0; i < priv->child_count; i++) + fd_ctx->opened_on[i] = AFR_FD_OPENED; + } + + fd_ctx = (afr_fd_ctx_t *)(long) ctx; +out: + return fd_ctx; +} + + +afr_fd_ctx_t * +afr_fd_ctx_get (fd_t *fd, xlator_t *this) +{ + afr_fd_ctx_t *fd_ctx = NULL; + + LOCK(&fd->lock); + { + fd_ctx = __afr_fd_ctx_get (fd, this); + } + UNLOCK(&fd->lock); + + return fd_ctx; +} + + static void -afr_pid_save (call_frame_t *frame) +afr_save_lk_owner (call_frame_t *frame) { afr_local_t * local = NULL; local = frame->local; - local->saved_pid = frame->root->pid; + local->saved_lk_owner = frame->root->lk_owner; } static void -afr_pid_restore (call_frame_t *frame) +afr_restore_lk_owner (call_frame_t *frame) { afr_local_t * local = NULL; local = frame->local; - frame->root->pid = local->saved_pid; + frame->root->lk_owner = local->saved_lk_owner; } - static void __mark_all_pending (int32_t *pending[], int child_count, afr_transaction_type type) -{ - int i; - int j; +{ + int i = 0; + int j = 0; for (i = 0; i < child_count; i++) { j = afr_index_for_transaction_type (type); - pending[i][j] = hton32 (1); + pending[i][j] = hton32 (1); } } @@ -66,1053 +111,1707 @@ static void __mark_child_dead (int32_t *pending[], int child_count, int child, afr_transaction_type type) { - int j; + int j = 0; j = afr_index_for_transaction_type (type); - - pending[child][j] = 0; + + pending[child][j] = 0; } static void -__mark_fop_failed_on_fd (fd_t *fd, xlator_t *this, - int child_index) +__mark_pre_op_done_on_fd (call_frame_t *frame, xlator_t *this, int child_index) { - uint64_t ctx; - afr_fd_ctx_t * fd_ctx = NULL; + afr_local_t *local = NULL; + afr_fd_ctx_t *fd_ctx = NULL; - int ret = 0; + local = frame->local; - ret = fd_ctx_get (fd, this, &ctx); + if (!local->fd) + return; - if (ret < 0) - goto out; + fd_ctx = afr_fd_ctx_get (local->fd, this); - fd_ctx = (afr_fd_ctx_t *)(long) ctx; + if (!fd_ctx) + goto out; - fd_ctx->child_failed[child_index] = 1; + LOCK (&local->fd->lock); + { + if (local->transaction.type == AFR_DATA_TRANSACTION) + fd_ctx->pre_op_done[child_index]++; + } + UNLOCK (&local->fd->lock); out: return; } - static void -__mark_failed_children (int32_t *pending[], int child_count, - xlator_t *this, fd_t *fd, afr_transaction_type type) +__mark_non_participant_children (int32_t *pending[], int child_count, + unsigned char *participants, + afr_transaction_type type) { - uint64_t ctx; - afr_fd_ctx_t * fd_ctx = NULL; - - int ret = 0; - int i = 0; - int j = 0; + int i = 0; + int j = 0; - ret = fd_ctx_get (fd, this, &ctx); + j = afr_index_for_transaction_type (type); + for (i = 0; i < child_count; i++) { + if (!participants[i]) + pending[i][j] = 0; + } +} - if (ret < 0) - goto out; - fd_ctx = (afr_fd_ctx_t *)(long) ctx; +void +__mark_all_success (int32_t *pending[], int child_count, + afr_transaction_type type) +{ + int i; + int j; for (i = 0; i < child_count; i++) { j = afr_index_for_transaction_type (type); - - if (fd_ctx->child_failed[i]) - pending[i][j] = 0; + pending[i][j] = hton32 (-1); } - -out: - return; } +void +_set_all_child_errno (int *child_errno, unsigned int child_count) +{ + int i = 0; -static void -__mark_down_children (int32_t *pending[], int child_count, - unsigned char *child_up, afr_transaction_type type) + for (i = 0; i < child_count; i++) + if (child_errno[i] == 0) + child_errno[i] = ENOTCONN; +} + +void +afr_transaction_perform_fop (call_frame_t *frame, xlator_t *this) { - int i; - int j; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + fd_t *fd = NULL; - for (i = 0; i < child_count; i++) { - j = afr_index_for_transaction_type (type); + local = frame->local; + priv = this->private; + fd = local->fd; - if (!child_up[i]) - pending[i][j] = 0; - } + __mark_all_success (local->pending, priv->child_count, + local->transaction.type); + + _set_all_child_errno (local->child_errno, priv->child_count); + + /* Perform fops with the lk-owner from top xlator. + * Eg: lk-owner of posix-lk and flush should be same, + * flush cant clear the posix-lks without that lk-owner. + */ + afr_save_lk_owner (frame); + frame->root->lk_owner = + local->transaction.main_frame->root->lk_owner; + + + /* The wake up needs to happen independent of + what type of fop arrives here. If it was + a write, then it has already inherited the + lock and changelog. If it was not a write, + then the presumption of the optimization (of + optimizing for successive write operations) + fails. + */ + if (fd) + afr_delayed_changelog_wake_up (this, fd); + local->transaction.fop (frame, this); } -static void -__mark_all_success (int32_t *pending[], int child_count, - afr_transaction_type type) +static int +__changelog_enabled (afr_private_t *priv, afr_transaction_type type) { - int i; - int j; + int ret = 0; - for (i = 0; i < child_count; i++) { - j = afr_index_for_transaction_type (type); - pending[i][j] = hton32 (-1); + switch (type) { + case AFR_DATA_TRANSACTION: + if (priv->data_change_log) + ret = 1; + + break; + + case AFR_METADATA_TRANSACTION: + if (priv->metadata_change_log) + ret = 1; + + break; + + case AFR_ENTRY_TRANSACTION: + case AFR_ENTRY_RENAME_TRANSACTION: + if (priv->entry_change_log) + ret = 1; + + break; } + + return ret; } static int -__is_first_write_on_fd (xlator_t *this, fd_t *fd) +__fop_changelog_needed (call_frame_t *frame, xlator_t *this) { - int op_ret = 0; - int _ret = -1; + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + int op_ret = 0; + afr_transaction_type type = -1; - uint64_t ctx; - afr_fd_ctx_t * fd_ctx = NULL; + priv = this->private; + local = frame->local; + type = local->transaction.type; - LOCK (&fd->lock); - { - _ret = __fd_ctx_get (fd, this, &ctx); - - if (_ret < 0) { - gf_log (this->name, GF_LOG_DEBUG, - "could not get fd ctx on fd=%p", - fd); - goto out; - } + if (__changelog_enabled (priv, type)) { + switch (local->op) { - fd_ctx = (afr_fd_ctx_t *)(long) ctx; + case GF_FOP_WRITE: + case GF_FOP_FTRUNCATE: + op_ret = 1; + break; - if (fd_ctx->pre_op_done == 0) { - fd_ctx->pre_op_done = 1; + case GF_FOP_FLUSH: + op_ret = 0; + break; + + default: op_ret = 1; } } -out: - UNLOCK (&fd->lock); return op_ret; } +int +afr_set_pending_dict (afr_private_t *priv, dict_t *xattr, int32_t **pending, + int child, afr_xattrop_type_t op) +{ + int i = 0; + int ret = 0; + + if (op == LOCAL_FIRST) { + ret = dict_set_static_bin (xattr, priv->pending_key[child], + pending[child], + AFR_NUM_CHANGE_LOGS * sizeof (int32_t)); + if (ret) + goto out; + } + for (i = 0; i < priv->child_count; i++) { + if (i == child) + continue; + ret = dict_set_static_bin (xattr, priv->pending_key[i], + pending[i], + AFR_NUM_CHANGE_LOGS * sizeof (int32_t)); + /* 3 = data+metadata+entry */ -static int -__if_fd_pre_op_done (xlator_t *this, fd_t *fd) + if (ret < 0) + goto out; + } + if (op == LOCAL_LAST) { + ret = dict_set_static_bin (xattr, priv->pending_key[child], + pending[child], + AFR_NUM_CHANGE_LOGS * sizeof (int32_t)); + if (ret) + goto out; + } +out: + return ret; +} + +int +afr_lock_server_count (afr_private_t *priv, afr_transaction_type type) { - int op_ret = 0; - int _ret = -1; + int ret = 0; + + switch (type) { + case AFR_DATA_TRANSACTION: + ret = priv->child_count; + break; + + case AFR_METADATA_TRANSACTION: + ret = priv->child_count; + break; + + case AFR_ENTRY_TRANSACTION: + case AFR_ENTRY_RENAME_TRANSACTION: + ret = priv->child_count; + break; + } + + return ret; +} + +/* {{{ pending */ + +int32_t +afr_changelog_post_op_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xattr, + dict_t *xdata) +{ + afr_internal_lock_t *int_lock = NULL; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int call_count = -1; - uint64_t ctx; - afr_fd_ctx_t * fd_ctx = NULL; + priv = this->private; + local = frame->local; + int_lock = &local->internal_lock; - LOCK (&fd->lock); + LOCK (&frame->lock); { - _ret = __fd_ctx_get (fd, this, &ctx); + call_count = --local->call_count; + } + UNLOCK (&frame->lock); - if (_ret < 0) { - goto out; + if (call_count == 0) { + if (local->transaction.resume_stub) { + call_resume (local->transaction.resume_stub); + local->transaction.resume_stub = NULL; } - fd_ctx = (afr_fd_ctx_t *)(long) ctx; - - if (fd_ctx->pre_op_done) { - fd_ctx->pre_op_done = 0; - op_ret = 1; + if (afr_lock_server_count (priv, local->transaction.type) == 0) { + local->transaction.done (frame, this); + } else { + int_lock->lock_cbk = local->transaction.done; + afr_unlock (frame, this); } } + + return 0; +} + + +void +afr_transaction_rm_stale_children (call_frame_t *frame, xlator_t *this, + inode_t *inode, afr_transaction_type type) +{ + int i = -1; + int count = 0; + int read_child = -1; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int **pending = NULL; + int idx = 0; + int32_t *stale_children = NULL; + int32_t *fresh_children = NULL; + gf_boolean_t rm_stale_children = _gf_false; + + idx = afr_index_for_transaction_type (type); + + priv = this->private; + local = frame->local; + pending = local->pending; + + if (local->op_ret < 0) + goto out; + fresh_children = local->fresh_children; + read_child = afr_inode_get_read_ctx (this, inode, fresh_children); + if (read_child < 0) { + gf_log (this->name, GF_LOG_DEBUG, "Possible split-brain " + "for %s", uuid_utoa (inode->gfid)); + goto out; + } + + for (i = 0; i < priv->child_count; i++) { + if (!afr_is_child_present (fresh_children, + priv->child_count, i)) + continue; + if (pending[i][idx]) + continue; + /* child is down or op failed on it */ + if (!stale_children) + stale_children = afr_children_create (priv->child_count); + if (!stale_children) + goto out; + + rm_stale_children = _gf_true; + stale_children[count++] = i; + gf_log (this->name, GF_LOG_DEBUG, "Removing stale child " + "%d for %s", i, uuid_utoa (inode->gfid)); + } + + if (!rm_stale_children) + goto out; + + afr_inode_rm_stale_children (this, inode, stale_children); out: - UNLOCK (&fd->lock); + GF_FREE (stale_children); + return; +} - return op_ret; +afr_inodelk_t* +afr_get_inodelk (afr_internal_lock_t *int_lock, char *dom) +{ + afr_inodelk_t *inodelk = NULL; + int i = 0; + + for (i = 0; int_lock->inodelk[i].domain; i++) { + inodelk = &int_lock->inodelk[i]; + if (strcmp (dom, inodelk->domain) == 0) + return inodelk; + } + return NULL; } +unsigned char* +afr_locked_nodes_get (afr_transaction_type type, afr_internal_lock_t *int_lock) +{ + unsigned char *locked_nodes = NULL; + afr_inodelk_t *inodelk = NULL; + switch (type) { + case AFR_DATA_TRANSACTION: + case AFR_METADATA_TRANSACTION: + inodelk = afr_get_inodelk (int_lock, int_lock->domain); + locked_nodes = inodelk->locked_nodes; + break; + + case AFR_ENTRY_TRANSACTION: + case AFR_ENTRY_RENAME_TRANSACTION: + /*Because same set of subvols participate in all lockee + * entities*/ + locked_nodes = int_lock->lockee[0].locked_nodes; + break; + } + return locked_nodes; +} -static int -__changelog_enabled (afr_private_t *priv, afr_transaction_type type) +int +afr_changelog_pre_op_call_count (afr_transaction_type type, + afr_internal_lock_t *int_lock, + unsigned int child_count) { - int ret = 0; - - switch (type) { - case AFR_DATA_TRANSACTION: - if (priv->data_change_log) - ret = 1; - - break; - - case AFR_METADATA_TRANSACTION: - if (priv->metadata_change_log) - ret = 1; - - break; - - case AFR_ENTRY_TRANSACTION: - case AFR_ENTRY_RENAME_TRANSACTION: - if (priv->entry_change_log) - ret = 1; - - break; - - case AFR_FLUSH_TRANSACTION: - ret = 1; - } + int call_count = 0; + unsigned char *locked_nodes = NULL; + + locked_nodes = afr_locked_nodes_get (type, int_lock); + GF_ASSERT (locked_nodes); - return ret; + call_count = afr_locked_children_count (locked_nodes, child_count); + if (type == AFR_ENTRY_RENAME_TRANSACTION) + call_count *= 2; + + return call_count; } +int +afr_changelog_post_op_call_count (afr_transaction_type type, + unsigned char *pre_op, + unsigned int child_count) +{ + int call_count = 0; -static int -__changelog_needed_pre_op (call_frame_t *frame, xlator_t *this) + call_count = afr_pre_op_done_children_count (pre_op, child_count); + if (type == AFR_ENTRY_RENAME_TRANSACTION) + call_count *= 2; + + return call_count; +} + +void +afr_compute_txn_changelog (afr_local_t *local, afr_private_t *priv) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - fd_t * fd = NULL; + int i = 0; + int index = 0; + int32_t postop = 0; + int32_t preop = 1; + int32_t **txn_changelog = NULL; + + txn_changelog = local->transaction.txn_changelog; + index = afr_index_for_transaction_type (local->transaction.type); + for (i = 0; i < priv->child_count; i++) { + postop = ntoh32 (local->pending[i][index]); + txn_changelog[i][index] = hton32 (postop + preop); + } +} - int op_ret = 0; +afr_xattrop_type_t +afr_get_postop_xattrop_type (int32_t **pending, int optimized, int child, + afr_transaction_type type) +{ + int index = 0; + afr_xattrop_type_t op = LOCAL_LAST; - priv = this->private; - local = frame->local; - - if (__changelog_enabled (priv, local->transaction.type)) { - switch (local->op) { - - case GF_FOP_WRITE: - case GF_FOP_FTRUNCATE: - /* - if it's a data transaction, we write the changelog - only on the first write on an fd - */ - - fd = local->fd; - if (!fd || __is_first_write_on_fd (this, fd)) - op_ret = 1; - - break; - - case GF_FOP_FLUSH: - /* only do post-op on flush() */ - - op_ret = 0; - break; - - default: - op_ret = 1; - } - } + index = afr_index_for_transaction_type (type); + if (optimized && !pending[child][index]) + op = LOCAL_FIRST; + return op; +} - return op_ret; +void +afr_set_postop_dict (afr_local_t *local, xlator_t *this, dict_t *xattr, + int optimized, int child) +{ + int32_t **txn_changelog = NULL; + int32_t **changelog = NULL; + afr_private_t *priv = NULL; + int ret = 0; + afr_xattrop_type_t op = LOCAL_LAST; + + priv = this->private; + txn_changelog = local->transaction.txn_changelog; + op = afr_get_postop_xattrop_type (local->pending, optimized, child, + local->transaction.type); + if (optimized) + changelog = txn_changelog; + else + changelog = local->pending; + ret = afr_set_pending_dict (priv, xattr, changelog, child, op); + if (ret < 0) + gf_log (this->name, GF_LOG_INFO, + "failed to set pending entry"); } -static int -__changelog_needed_post_op (call_frame_t *frame, xlator_t *this) +gf_boolean_t +afr_txn_nothing_failed (call_frame_t *frame, xlator_t *this) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int index = -1; + int i = 0; - int op_ret = 0; - afr_transaction_type type = -1; + local = frame->local; + priv = this->private; - priv = this->private; - local = frame->local; - type = local->transaction.type; + index = afr_index_for_transaction_type (local->transaction.type); - if (__changelog_enabled (priv, type)) { - switch (local->op) { + for (i = 0; i < priv->child_count; i++) { + if (local->pending[i][index] == 0) + return _gf_false; + } - case GF_FOP_WRITE: - case GF_FOP_FTRUNCATE: - op_ret = 0; - break; + return _gf_true; +} - case GF_FOP_FLUSH: - op_ret = __if_fd_pre_op_done (this, local->fd); +static void +afr_dir_fop_handle_all_fop_failures (call_frame_t *frame) +{ + xlator_t *this = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + + this = frame->this; + local = frame->local; + priv = this->private; + + if ((local->transaction.type != AFR_ENTRY_TRANSACTION) && + (local->transaction.type != AFR_ENTRY_RENAME_TRANSACTION)) + return; + + if (local->op_ret >= 0) + goto out; + + __mark_all_success (local->pending, priv->child_count, + local->transaction.type); +out: + return; +} + +static void +afr_data_handle_quota_errors (call_frame_t *frame, xlator_t *this) +{ + int i = 0; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + gf_boolean_t all_quota_failures = _gf_false; + + local = frame->local; + priv = this->private; + if (local->transaction.type != AFR_DATA_TRANSACTION) + return; + /* + * Idea is to not leave the file in FOOL-FOOL scenario in case on + * all the bricks data transaction failed with EDQUOT to avoid + * increasing un-necessary load of self-heals in the system. + */ + all_quota_failures = _gf_true; + for (i = 0; i < priv->child_count; i++) { + if (local->transaction.pre_op[i] && + (local->child_errno[i] != EDQUOT)) { + all_quota_failures = _gf_false; break; + } + } + if (all_quota_failures) + __mark_all_success (local->pending, priv->child_count, + local->transaction.type); +} - default: - op_ret = 1; +int +afr_changelog_post_op_now (call_frame_t *frame, xlator_t *this) +{ + afr_private_t * priv = this->private; + afr_internal_lock_t *int_lock = NULL; + int i = 0; + int call_count = 0; + + afr_local_t * local = NULL; + afr_fd_ctx_t *fdctx = NULL; + dict_t **xattr = NULL; + int piggyback = 0; + int nothing_failed = 1; + + local = frame->local; + int_lock = &local->internal_lock; + + __mark_non_participant_children (local->pending, priv->child_count, + local->transaction.pre_op, + local->transaction.type); + + afr_data_handle_quota_errors (frame, this); + afr_dir_fop_handle_all_fop_failures (frame); + + if (local->fd) + afr_transaction_rm_stale_children (frame, this, + local->fd->inode, + local->transaction.type); + + xattr = alloca (priv->child_count * sizeof (*xattr)); + memset (xattr, 0, (priv->child_count * sizeof (*xattr))); + for (i = 0; i < priv->child_count; i++) { + xattr[i] = dict_new (); + } + + call_count = afr_changelog_post_op_call_count (local->transaction.type, + local->transaction.pre_op, + priv->child_count); + local->call_count = call_count; + + if (local->fd) + fdctx = afr_fd_ctx_get (local->fd, this); + + if (call_count == 0) { + /* no child is up */ + int_lock->lock_cbk = local->transaction.done; + afr_unlock (frame, this); + goto out; + } + + nothing_failed = afr_txn_nothing_failed (frame, this); + + afr_compute_txn_changelog (local , priv); + + for (i = 0; i < priv->child_count; i++) { + if (!local->transaction.pre_op[i]) + continue; + + if (local->transaction.type != AFR_DATA_TRANSACTION) + afr_set_postop_dict (local, this, xattr[i], + local->optimistic_change_log, i); + switch (local->transaction.type) { + case AFR_DATA_TRANSACTION: + { + if (!fdctx) { + afr_set_postop_dict (local, this, xattr[i], + 0, i); + STACK_WIND (frame, afr_changelog_post_op_cbk, + priv->children[i], + priv->children[i]->fops->xattrop, + &local->loc, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + break; + } + + /* local->transaction.postop_piggybacked[] was + precomputed in is_piggyback_postop() when called from + afr_changelog_post_op_safe() + */ + + piggyback = 0; + if (local->transaction.postop_piggybacked[i]) + piggyback = 1; + + afr_set_postop_dict (local, this, xattr[i], + piggyback, i); + + if (nothing_failed && piggyback) { + afr_changelog_post_op_cbk (frame, (void *)(long)i, + this, 1, 0, xattr[i], NULL); + } else { + STACK_WIND_COOKIE (frame, + afr_changelog_post_op_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fxattrop, + local->fd, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + } + } + break; + case AFR_METADATA_TRANSACTION: + { + if (nothing_failed && local->optimistic_change_log) { + afr_changelog_post_op_cbk (frame, (void *)(long)i, + this, 1, 0, xattr[i], + NULL); + break; + } + + if (local->fd) + STACK_WIND (frame, afr_changelog_post_op_cbk, + priv->children[i], + priv->children[i]->fops->fxattrop, + local->fd, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + else + STACK_WIND (frame, afr_changelog_post_op_cbk, + priv->children[i], + priv->children[i]->fops->xattrop, + &local->loc, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); } + break; + + case AFR_ENTRY_RENAME_TRANSACTION: + { + if (nothing_failed && local->optimistic_change_log) { + afr_changelog_post_op_cbk (frame, (void *)(long)i, + this, 1, 0, xattr[i], + NULL); + } else { + STACK_WIND_COOKIE (frame, afr_changelog_post_op_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->xattrop, + &local->transaction.new_parent_loc, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + } + call_count--; + } + + /* + set it again because previous stack_wind + might have already returned (think of case + where subvolume is posix) and would have + used the dict as placeholder for return + value + */ + + afr_set_postop_dict (local, this, xattr[i], + local->optimistic_change_log, i); + + /* fall through */ + + case AFR_ENTRY_TRANSACTION: + { + if (nothing_failed && local->optimistic_change_log) { + afr_changelog_post_op_cbk (frame, (void *)(long)i, + this, 1, 0, xattr[i], + NULL); + break; + } + + if (local->fd) + STACK_WIND (frame, afr_changelog_post_op_cbk, + priv->children[i], + priv->children[i]->fops->fxattrop, + local->fd, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + else + STACK_WIND (frame, afr_changelog_post_op_cbk, + priv->children[i], + priv->children[i]->fops->xattrop, + &local->transaction.parent_loc, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + } + break; + } + + if (!--call_count) + break; } - return op_ret; +out: + for (i = 0; i < priv->child_count; i++) { + dict_unref (xattr[i]); + } + + return 0; } -static int -afr_set_pending_dict (afr_private_t *priv, dict_t *xattr, int32_t **pending) +int32_t +afr_changelog_pre_op_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xattr, + dict_t *xdata) { - int i; + afr_local_t * local = NULL; + afr_private_t * priv = this->private; + int call_count = -1; + int child_index = (long) cookie; + + local = frame->local; + + LOCK (&frame->lock); + { + switch (op_ret) { + case 0: + __mark_pre_op_done_on_fd (frame, this, child_index); + //fallthrough we need to mark the pre_op + case 1: + local->transaction.pre_op[child_index] = 1; + /* special op_ret for piggyback */ + break; + case -1: + if (op_errno == ENOTSUP) { + gf_log (this->name, GF_LOG_ERROR, + "xattrop not supported by %s", + priv->children[child_index]->name); + local->op_ret = -1; + + } else if (!child_went_down (op_ret, op_errno)) { + gf_log (this->name, GF_LOG_ERROR, + "xattrop failed on child %s: %s", + priv->children[child_index]->name, + strerror (op_errno)); + } + local->op_errno = op_errno; + break; + } + + call_count = --local->call_count; + } + UNLOCK (&frame->lock); + + if (call_count == 0) { + if ((local->op_ret == -1) && + (local->op_errno == ENOTSUP)) { + local->transaction.resume (frame, this); + } else { + afr_transaction_perform_fop (frame, this); + } + } + + return 0; +} + +int +afr_changelog_pre_op (call_frame_t *frame, xlator_t *this) +{ + afr_private_t * priv = this->private; + int i = 0; int ret = 0; + int call_count = 0; + dict_t **xattr = NULL; + afr_fd_ctx_t *fdctx = NULL; + afr_local_t *local = NULL; + int piggyback = 0; + afr_internal_lock_t *int_lock = NULL; + unsigned char *locked_nodes = NULL; + + local = frame->local; + int_lock = &local->internal_lock; + + xattr = alloca (priv->child_count * sizeof (*xattr)); + memset (xattr, 0, (priv->child_count * sizeof (*xattr))); for (i = 0; i < priv->child_count; i++) { - ret = dict_set_static_bin (xattr, priv->pending_key[i], - pending[i], 3 * sizeof (int32_t)); - /* 3 = data+metadata+entry */ - - if (ret < 0) - goto out; + xattr[i] = dict_new (); } + call_count = afr_changelog_pre_op_call_count (local->transaction.type, + int_lock, + priv->child_count); + if (call_count == 0) { + local->internal_lock.lock_cbk = + local->transaction.done; + afr_unlock (frame, this); + goto out; + } + + local->call_count = call_count; + + __mark_all_pending (local->pending, priv->child_count, + local->transaction.type); + + if (local->fd) + fdctx = afr_fd_ctx_get (local->fd, this); + + locked_nodes = afr_locked_nodes_get (local->transaction.type, int_lock); + for (i = 0; i < priv->child_count; i++) { + if (!locked_nodes[i]) + continue; + ret = afr_set_pending_dict (priv, xattr[i], local->pending, + i, LOCAL_FIRST); + + if (ret < 0) + gf_log (this->name, GF_LOG_INFO, + "failed to set pending entry"); + + + switch (local->transaction.type) { + case AFR_DATA_TRANSACTION: + { + if (!fdctx) { + STACK_WIND_COOKIE (frame, + afr_changelog_pre_op_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->xattrop, + &(local->loc), + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + break; + } + + LOCK (&local->fd->lock); + { + piggyback = 0; + if (fdctx->pre_op_done[i]) { + fdctx->pre_op_piggyback[i]++; + piggyback = 1; + fdctx->hit++; + } else { + fdctx->miss++; + } + } + UNLOCK (&local->fd->lock); + + afr_set_delayed_post_op (frame, this); + + if (piggyback) + afr_changelog_pre_op_cbk (frame, (void *)(long)i, + this, 1, 0, xattr[i], + NULL); + else + STACK_WIND_COOKIE (frame, + afr_changelog_pre_op_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fxattrop, + local->fd, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + } + break; + case AFR_METADATA_TRANSACTION: + { + if (local->optimistic_change_log) { + afr_changelog_pre_op_cbk (frame, (void *)(long)i, + this, 1, 0, xattr[i], + NULL); + break; + } + + if (local->fd) + STACK_WIND_COOKIE (frame, + afr_changelog_pre_op_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fxattrop, + local->fd, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + else + STACK_WIND_COOKIE (frame, + afr_changelog_pre_op_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->xattrop, + &(local->loc), + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + } + break; + + case AFR_ENTRY_RENAME_TRANSACTION: + { + if (local->optimistic_change_log) { + afr_changelog_pre_op_cbk (frame, (void *)(long)i, + this, 1, 0, xattr[i], + NULL); + } else { + STACK_WIND_COOKIE (frame, + afr_changelog_pre_op_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->xattrop, + &local->transaction.new_parent_loc, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + } + + call_count--; + } + + + /* + set it again because previous stack_wind + might have already returned (think of case + where subvolume is posix) and would have + used the dict as placeholder for return + value + */ + + ret = afr_set_pending_dict (priv, xattr[i], local->pending, + i, LOCAL_FIRST); + + if (ret < 0) + gf_log (this->name, GF_LOG_INFO, + "failed to set pending entry"); + + /* fall through */ + + case AFR_ENTRY_TRANSACTION: + { + if (local->optimistic_change_log) { + afr_changelog_pre_op_cbk (frame, (void *)(long)i, + this, 1, 0, xattr[i], + NULL); + break; + } + + if (local->fd) + STACK_WIND_COOKIE (frame, + afr_changelog_pre_op_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fxattrop, + local->fd, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + else + STACK_WIND_COOKIE (frame, + afr_changelog_pre_op_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->xattrop, + &local->transaction.parent_loc, + GF_XATTROP_ADD_ARRAY, xattr[i], + NULL); + } + break; + } + + if (!--call_count) + break; + } out: - return ret; + for (i = 0; i < priv->child_count; i++) { + dict_unref (xattr[i]); + } + + return 0; } -static int -afr_lock_server_count (afr_private_t *priv, afr_transaction_type type) +int +afr_post_blocking_inodelk_cbk (call_frame_t *frame, xlator_t *this) { - int ret = 0; - - switch (type) { - case AFR_FLUSH_TRANSACTION: - case AFR_DATA_TRANSACTION: - ret = priv->data_lock_server_count; - break; - - case AFR_METADATA_TRANSACTION: - ret = priv->metadata_lock_server_count; - break; - - case AFR_ENTRY_TRANSACTION: - case AFR_ENTRY_RENAME_TRANSACTION: - ret = priv->entry_lock_server_count; - break; - } + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; - return ret; -} + local = frame->local; + int_lock = &local->internal_lock; + if (int_lock->lock_op_ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "Blocking inodelks failed."); + local->transaction.done (frame, this); + } else { -/* {{{ unlock */ + gf_log (this->name, GF_LOG_DEBUG, + "Blocking inodelks done. Proceeding to FOP"); + afr_internal_lock_finish (frame, this); + } -int32_t -afr_unlock_common_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - afr_local_t *local; - int call_count = 0; + return 0; +} - local = frame->local; - LOCK (&frame->lock); - { - call_count = --local->call_count; - } - UNLOCK (&frame->lock); +int +afr_post_nonblocking_inodelk_cbk (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + + local = frame->local; + int_lock = &local->internal_lock; + + /* Initiate blocking locks if non-blocking has failed */ + if (int_lock->lock_op_ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "Non blocking inodelks failed. Proceeding to blocking"); + int_lock->lock_cbk = afr_post_blocking_inodelk_cbk; + afr_blocking_lock (frame, this); + } else { + + gf_log (this->name, GF_LOG_DEBUG, + "Non blocking inodelks done. Proceeding to FOP"); + afr_internal_lock_finish (frame, this); + } - if (call_count == 0) { - local->transaction.done (frame, this); - } - - return 0; + return 0; } int -afr_unlock (call_frame_t *frame, xlator_t *this) +afr_post_blocking_entrylk_cbk (call_frame_t *frame, xlator_t *this) { - struct flock flock; + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; - int i = 0; - int call_count = 0; + local = frame->local; + int_lock = &local->internal_lock; - afr_local_t *local = NULL; - afr_private_t * priv = this->private; + if (int_lock->lock_op_ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "Blocking entrylks failed."); + local->transaction.done (frame, this); + } else { - local = frame->local; + gf_log (this->name, GF_LOG_DEBUG, + "Blocking entrylks done. Proceeding to FOP"); + afr_internal_lock_finish (frame, this); + } - /* - pid has been restored to saved_pid in the fop, - so set it back to frame->root - */ + return 0; +} - frame->root->pid = (long) frame->root; - call_count = afr_locked_nodes_count (local->transaction.locked_nodes, - priv->child_count); - - if (call_count == 0) { - local->transaction.done (frame, this); - return 0; - } +int +afr_post_nonblocking_entrylk_cbk (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; - if (local->transaction.type == AFR_ENTRY_RENAME_TRANSACTION) - call_count *= 2; - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - flock.l_start = local->transaction.start; - flock.l_len = local->transaction.len; - flock.l_type = F_UNLCK; - - if (local->transaction.locked_nodes[i]) { - switch (local->transaction.type) { - case AFR_DATA_TRANSACTION: - case AFR_METADATA_TRANSACTION: - case AFR_FLUSH_TRANSACTION: - - if (local->fd) { - STACK_WIND (frame, afr_unlock_common_cbk, - priv->children[i], - priv->children[i]->fops->finodelk, - this->name, local->fd, - F_SETLK, &flock); - } else { - STACK_WIND (frame, afr_unlock_common_cbk, - priv->children[i], - priv->children[i]->fops->inodelk, - this->name, &local->loc, - F_SETLK, &flock); - } - - break; - - case AFR_ENTRY_RENAME_TRANSACTION: - - STACK_WIND (frame, afr_unlock_common_cbk, - priv->children[i], - priv->children[i]->fops->entrylk, - this->name, - &local->transaction.new_parent_loc, - local->transaction.new_basename, - ENTRYLK_UNLOCK, ENTRYLK_WRLCK); - - call_count--; - - /* fall through */ - - case AFR_ENTRY_TRANSACTION: - if (local->fd) { - STACK_WIND (frame, afr_unlock_common_cbk, - priv->children[i], - priv->children[i]->fops->fentrylk, - this->name, local->fd, - local->transaction.basename, - ENTRYLK_UNLOCK, ENTRYLK_WRLCK); - } else { - STACK_WIND (frame, afr_unlock_common_cbk, - priv->children[i], - priv->children[i]->fops->entrylk, - this->name, - &local->transaction.parent_loc, - local->transaction.basename, - ENTRYLK_UNLOCK, ENTRYLK_WRLCK); - - } - break; - } - - if (!--call_count) - break; - } - } + local = frame->local; + int_lock = &local->internal_lock; + + /* Initiate blocking locks if non-blocking has failed */ + if (int_lock->lock_op_ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "Non blocking entrylks failed. Proceeding to blocking"); + int_lock->lock_cbk = afr_post_blocking_entrylk_cbk; + afr_blocking_lock (frame, this); + } else { + + gf_log (this->name, GF_LOG_DEBUG, + "Non blocking entrylks done. Proceeding to FOP"); + afr_internal_lock_finish (frame, this); + } - return 0; + return 0; } -/* }}} */ +int +afr_post_blocking_rename_cbk (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; -/* {{{ pending */ + local = frame->local; + int_lock = &local->internal_lock; -int32_t -afr_changelog_post_op_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, dict_t *xattr) + if (int_lock->lock_op_ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "Blocking entrylks failed."); + local->transaction.done (frame, this); + } else { + + gf_log (this->name, GF_LOG_DEBUG, + "Blocking entrylks done. Proceeding to FOP"); + afr_internal_lock_finish (frame, this); + } + return 0; +} + + +int +afr_post_lower_unlock_cbk (call_frame_t *frame, xlator_t *this) { - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - - int call_count = -1; + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; - priv = this->private; - local = frame->local; + local = frame->local; + int_lock = &local->internal_lock; - LOCK (&frame->lock); - { - call_count = --local->call_count; - } - UNLOCK (&frame->lock); - - if (call_count == 0) { - if (afr_lock_server_count (priv, local->transaction.type) == 0) { - local->transaction.done (frame, this); - } else { - afr_unlock (frame, this); - } - } + GF_ASSERT (!int_lock->higher_locked); - return 0; + int_lock->lock_cbk = afr_post_blocking_rename_cbk; + afr_blocking_lock (frame, this); + + return 0; } -int -afr_changelog_post_op (call_frame_t *frame, xlator_t *this) +int +afr_set_transaction_flock (afr_local_t *local) { - afr_private_t * priv = this->private; + afr_internal_lock_t *int_lock = NULL; + afr_inodelk_t *inodelk = NULL; - int ret = 0; - int i = 0; - int call_count = 0; - - afr_local_t * local = NULL; - dict_t * xattr = dict_ref (get_new_dict ()); + int_lock = &local->internal_lock; + inodelk = afr_get_inodelk (int_lock, int_lock->domain); - local = frame->local; + inodelk->flock.l_len = local->transaction.len; + inodelk->flock.l_start = local->transaction.start; + inodelk->flock.l_type = F_WRLCK; + + return 0; +} + +int +afr_lock_rec (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + + local = frame->local; + int_lock = &local->internal_lock; + + int_lock->transaction_lk_type = AFR_TRANSACTION_LK; + int_lock->domain = this->name; + + switch (local->transaction.type) { + case AFR_DATA_TRANSACTION: + case AFR_METADATA_TRANSACTION: + afr_set_transaction_flock (local); + + int_lock->lock_cbk = afr_post_nonblocking_inodelk_cbk; + + afr_nonblocking_inodelk (frame, this); + break; - __mark_down_children (local->pending, priv->child_count, - local->child_up, local->transaction.type); - - if (local->op == GF_FOP_FLUSH) { - __mark_failed_children (local->pending, priv->child_count, - this, local->fd, - local->transaction.type); + case AFR_ENTRY_RENAME_TRANSACTION: + + int_lock->lock_cbk = afr_post_nonblocking_entrylk_cbk; + afr_nonblocking_entrylk (frame, this); + break; + + case AFR_ENTRY_TRANSACTION: + int_lock->lk_basename = local->transaction.basename; + if (&local->transaction.parent_loc) + int_lock->lk_loc = &local->transaction.parent_loc; + else + GF_ASSERT (local->fd); + + int_lock->lock_cbk = afr_post_nonblocking_entrylk_cbk; + afr_nonblocking_entrylk (frame, this); + break; } - call_count = afr_up_children_count (priv->child_count, local->child_up); + return 0; +} - if (local->transaction.type == AFR_ENTRY_RENAME_TRANSACTION) { - call_count *= 2; - } - local->call_count = call_count; +int +afr_lock (call_frame_t *frame, xlator_t *this) +{ + afr_set_lock_number (frame, this); + + return afr_lock_rec (frame, this); +} - if (call_count == 0) { - /* no child is up */ - dict_unref (xattr); - afr_unlock (frame, this); - return 0; - } - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - ret = afr_set_pending_dict (priv, xattr, - local->pending); - - if (ret < 0) - gf_log (this->name, GF_LOG_DEBUG, - "failed to set pending entry"); - - - switch (local->transaction.type) { - case AFR_DATA_TRANSACTION: - case AFR_METADATA_TRANSACTION: - case AFR_FLUSH_TRANSACTION: - { - if (local->fd) - STACK_WIND (frame, afr_changelog_post_op_cbk, - priv->children[i], - priv->children[i]->fops->fxattrop, - local->fd, - GF_XATTROP_ADD_ARRAY, xattr); - else - STACK_WIND (frame, afr_changelog_post_op_cbk, - priv->children[i], - priv->children[i]->fops->xattrop, - &local->loc, - GF_XATTROP_ADD_ARRAY, xattr); - } - break; - - case AFR_ENTRY_RENAME_TRANSACTION: - { - STACK_WIND_COOKIE (frame, afr_changelog_post_op_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->xattrop, - &local->transaction.new_parent_loc, - GF_XATTROP_ADD_ARRAY, xattr); - - call_count--; - } - - /* - set it again because previous stack_wind - might have already returned (think of case - where subvolume is posix) and would have - used the dict as placeholder for return - value - */ - - ret = afr_set_pending_dict (priv, xattr, - local->pending); - - if (ret < 0) - gf_log (this->name, GF_LOG_DEBUG, - "failed to set pending entry"); - - /* fall through */ - - case AFR_ENTRY_TRANSACTION: - { - if (local->fd) - STACK_WIND (frame, afr_changelog_post_op_cbk, - priv->children[i], - priv->children[i]->fops->fxattrop, - local->fd, - GF_XATTROP_ADD_ARRAY, xattr); - else - STACK_WIND (frame, afr_changelog_post_op_cbk, - priv->children[i], - priv->children[i]->fops->xattrop, - &local->transaction.parent_loc, - GF_XATTROP_ADD_ARRAY, xattr); - } - break; - } - - if (!--call_count) - break; - } - } - - dict_unref (xattr); - return 0; +/* }}} */ + +int +afr_internal_lock_finish (call_frame_t *frame, xlator_t *this) +{ + if (__fop_changelog_needed (frame, this)) { + afr_changelog_pre_op (frame, this); + } else { + afr_transaction_perform_fop (frame, this); + } + + return 0; } -int32_t -afr_changelog_pre_op_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, dict_t *xattr) +void +afr_set_delayed_post_op (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = this->private; - loc_t * loc = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; - int call_count = -1; - int child_index = (long) cookie; + /* call this function from any of the related optimizations + which benefit from delaying post op are enabled, namely: - local = frame->local; - loc = &local->loc; + - changelog piggybacking + - eager locking + */ - LOCK (&frame->lock); - { - if (op_ret == -1) { - local->child_up[child_index] = 0; - - if (op_errno == ENOTSUP) { - gf_log (this->name, GF_LOG_ERROR, - "xattrop not supported by %s", - priv->children[child_index]->name); - local->op_ret = -1; - - } else if (!child_went_down (op_ret, op_errno)) { - gf_log (this->name, GF_LOG_ERROR, - "xattrop failed on child %s: %s", - priv->children[child_index]->name, - strerror (op_errno)); - } - local->op_errno = op_errno; - } - - call_count = --local->call_count; - } - UNLOCK (&frame->lock); + priv = this->private; + if (!priv) + return; - if (call_count == 0) { - if ((local->op_ret == -1) && - (local->op_errno == ENOTSUP)) { - local->transaction.resume (frame, this); - } else { - __mark_all_success (local->pending, priv->child_count, - local->transaction.type); + if (!priv->post_op_delay_secs) + return; - afr_pid_restore (frame); + local = frame->local; + if (!local->transaction.eager_lock_on) + return; - local->transaction.fop (frame, this); - } - } + if (!local) + return; + + if (!local->fd) + return; - return 0; + if (local->op == GF_FOP_WRITE) + local->delayed_post_op = _gf_true; } +gf_boolean_t +afr_are_multiple_fds_opened (inode_t *inode, xlator_t *this) +{ + afr_inode_ctx_t *ictx = NULL; + + if (!inode) { + /* If false is returned, it may keep on taking eager-lock + * which may lead to starvation, so return true to avoid that. + */ + gf_log_callingfn (this->name, GF_LOG_ERROR, "Invalid inode"); + return _gf_true; + } + /* Lets say mount1 has eager-lock(full-lock) and after the eager-lock + * is taken mount2 opened the same file, it won't be able to + * perform any data operations until mount1 releases eager-lock. + * To avoid such scenario do not enable eager-lock for this transaction + * if open-fd-count is > 1 + */ + + ictx = afr_inode_ctx_get (inode, this); + if (!ictx) + return _gf_true; -int -afr_changelog_pre_op (call_frame_t *frame, xlator_t *this) + if (ictx->open_fd_count > 1) + return _gf_true; + + return _gf_false; +} + +gf_boolean_t +afr_any_fops_failed (afr_local_t *local, afr_private_t *priv) { - afr_private_t * priv = this->private; + if (local->success_count != priv->child_count) + return _gf_true; + return _gf_false; +} - int i = 0; - int ret = 0; - int call_count = 0; - dict_t *xattr = NULL; +gf_boolean_t +is_afr_delayed_changelog_post_op_needed (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + gf_boolean_t res = _gf_false; + afr_private_t *priv = NULL; - afr_local_t *local = NULL; + priv = this->private; - local = frame->local; - xattr = get_new_dict (); - dict_ref (xattr); + local = frame->local; + if (!local) + goto out; - call_count = afr_up_children_count (priv->child_count, - local->child_up); + if (!local->delayed_post_op) + goto out; - if (local->transaction.type == AFR_ENTRY_RENAME_TRANSACTION) { - call_count *= 2; - } + //Mark pending changelog ASAP + if (afr_any_fops_failed (local, priv)) + goto out; - if (call_count == 0) { - /* no child is up */ - dict_unref (xattr); - afr_unlock (frame, this); - return 0; - } + if (local->fd && afr_are_multiple_fds_opened (local->fd->inode, this)) + goto out; - local->call_count = call_count; + res = _gf_true; +out: + return res; +} - __mark_all_pending (local->pending, priv->child_count, - local->transaction.type); - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - ret = afr_set_pending_dict (priv, xattr, - local->pending); - - if (ret < 0) - gf_log (this->name, GF_LOG_DEBUG, - "failed to set pending entry"); - - - switch (local->transaction.type) { - case AFR_DATA_TRANSACTION: - case AFR_METADATA_TRANSACTION: - case AFR_FLUSH_TRANSACTION: - { - if (local->fd) - STACK_WIND_COOKIE (frame, - afr_changelog_pre_op_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->fxattrop, - local->fd, - GF_XATTROP_ADD_ARRAY, xattr); - else - STACK_WIND_COOKIE (frame, - afr_changelog_pre_op_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->xattrop, - &(local->loc), - GF_XATTROP_ADD_ARRAY, xattr); - } - break; - - case AFR_ENTRY_RENAME_TRANSACTION: - { - STACK_WIND_COOKIE (frame, - afr_changelog_pre_op_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->xattrop, - &local->transaction.new_parent_loc, - GF_XATTROP_ADD_ARRAY, xattr); - - call_count--; - } - - - /* - set it again because previous stack_wind - might have already returned (think of case - where subvolume is posix) and would have - used the dict as placeholder for return - value - */ - - ret = afr_set_pending_dict (priv, xattr, - local->pending); - - if (ret < 0) - gf_log (this->name, GF_LOG_DEBUG, - "failed to set pending entry"); - - /* fall through */ - - case AFR_ENTRY_TRANSACTION: - { - if (local->fd) - STACK_WIND_COOKIE (frame, - afr_changelog_pre_op_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->fxattrop, - local->fd, - GF_XATTROP_ADD_ARRAY, xattr); - else - STACK_WIND_COOKIE (frame, - afr_changelog_pre_op_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->xattrop, - &local->transaction.parent_loc, - GF_XATTROP_ADD_ARRAY, xattr); - } - - break; - } - - if (!--call_count) - break; - } - } +void +afr_delayed_changelog_post_op (xlator_t *this, call_frame_t *frame, fd_t *fd, + call_stub_t *stub); + +void +afr_delayed_changelog_wake_up_cbk (void *data) +{ + fd_t *fd = NULL; + + fd = data; - dict_unref (xattr); - return 0; + afr_delayed_changelog_wake_up (THIS, fd); } -/* }}} */ -/* {{{ lock */ +/* + Check if the frame is destined to get optimized away + with changelog piggybacking +*/ +static gf_boolean_t +is_piggyback_post_op (call_frame_t *frame, fd_t *fd) +{ + afr_fd_ctx_t *fdctx = NULL; + afr_local_t *local = NULL; + gf_boolean_t piggyback = _gf_true; + afr_private_t *priv = NULL; + int i = 0; -static -int afr_lock_rec (call_frame_t *frame, xlator_t *this, int child_index); + priv = frame->this->private; + local = frame->local; + fdctx = afr_fd_ctx_get (fd, frame->this); -int32_t -afr_lock_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) + LOCK(&fd->lock); + { + piggyback = _gf_true; + + for (i = 0; i < priv->child_count; i++) { + if (!local->transaction.pre_op[i]) + continue; + if (fdctx->pre_op_piggyback[i]) { + fdctx->pre_op_piggyback[i]--; + local->transaction.postop_piggybacked[i] = 1; + } else { + /* For at least _one_ subvolume we cannot + piggyback on the changelog, and have to + perform a hard POST-OP and therefore fsync + if necesssary + */ + piggyback = _gf_false; + GF_ASSERT (fdctx->pre_op_done[i]); + fdctx->pre_op_done[i]--; + } + } + } + UNLOCK(&fd->lock); + + if (!afr_txn_nothing_failed (frame, frame->this)) { + /* something failed in this transaction, + we will be performing a hard post-op + */ + return _gf_false; + } + + return piggyback; +} + + +/* SET operation */ +int +afr_fd_report_unstable_write (xlator_t *this, fd_t *fd) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - int done = 0; - int child_index = (long) cookie; + afr_fd_ctx_t *fdctx = NULL; - int call_count = 0; + fdctx = afr_fd_ctx_get (fd, this); - local = frame->local; - priv = this->private; + LOCK(&fd->lock); + { + fdctx->witnessed_unstable_write = _gf_true; + } + UNLOCK(&fd->lock); - LOCK (&frame->lock); - { - if (local->transaction.type == AFR_ENTRY_RENAME_TRANSACTION) { - /* wait for the other lock to return */ - call_count = --local->call_count; - } - - if (op_ret == -1) { - if (op_errno == ENOSYS) { - /* return ENOTSUP */ - gf_log (this->name, GF_LOG_ERROR, - "subvolume does not support locking. " - "please load features/posix-locks xlator on server"); - local->op_ret = op_ret; - done = 1; - } - - local->child_up[child_index] = 0; - local->op_errno = op_errno; - } - } - UNLOCK (&frame->lock); - - if (call_count == 0) { - if ((local->op_ret == -1) && - (local->op_errno == ENOSYS)) { - afr_unlock (frame, this); - } else { - local->transaction.locked_nodes[child_index] = 1; - local->transaction.lock_count++; - afr_lock_rec (frame, this, child_index + 1); - } - } + return 0; +} + +/* TEST and CLEAR operation */ +gf_boolean_t +afr_fd_has_witnessed_unstable_write (xlator_t *this, fd_t *fd) +{ + afr_fd_ctx_t *fdctx = NULL; + gf_boolean_t witness = _gf_false; - return 0; + fdctx = afr_fd_ctx_get (fd, this); + if (!fdctx) + return _gf_true; + + LOCK(&fd->lock); + { + if (fdctx->witnessed_unstable_write) { + witness = _gf_true; + fdctx->witnessed_unstable_write = _gf_false; + } + } + UNLOCK (&fd->lock); + + return witness; } -static loc_t * -lower_path (loc_t *l1, const char *b1, loc_t *l2, const char *b2) +int +afr_changelog_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *pre, + struct iatt *post, dict_t *xdata) { - int ret = 0; + afr_private_t *priv = NULL; + int child_index = (long) cookie; + int call_count = -1; + afr_local_t *local = NULL; - ret = strcmp (l1->path, l2->path); - - if (ret == 0) - ret = strcmp (b1, b2); + priv = this->private; + local = frame->local; - if (ret <= 0) - return l1; - else - return l2; + if (afr_fop_failed (op_ret, op_errno)) { + /* Failure of fsync() is as good as failure of previous + write(). So treat it like one. + */ + gf_log (this->name, GF_LOG_WARNING, + "fsync(%s) failed on subvolume %s. Transaction was %s", + uuid_utoa (local->fd->inode->gfid), + priv->children[child_index]->name, + gf_fop_list[local->op]); + + afr_transaction_fop_failed (frame, this, child_index); + } + + call_count = afr_frame_return (frame); + + if (call_count == 0) + afr_changelog_post_op_now (frame, this); + + return 0; } -static -int afr_lock_rec (call_frame_t *frame, xlator_t *this, int child_index) +int +afr_changelog_fsync (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + afr_local_t *local = NULL; + int i = 0; + int call_count = 0; + afr_private_t *priv = NULL; + dict_t *xdata = NULL; + GF_UNUSED int ret = -1; - struct flock flock; + local = frame->local; + priv = this->private; - loc_t * lower = NULL; - loc_t * higher = NULL; + call_count = afr_pre_op_done_children_count (local->transaction.pre_op, + priv->child_count); - const char *lower_name = NULL; - const char *higher_name = NULL; + if (!call_count) { + /* will go straight to unlock */ + afr_changelog_post_op_now (frame, this); + return 0; + } - local = frame->local; - priv = this->private; + local->call_count = call_count; - flock.l_start = local->transaction.start; - flock.l_len = local->transaction.len; - flock.l_type = F_WRLCK; + xdata = dict_new(); + if (xdata) + ret = dict_set_int32 (xdata, "batch-fsync", 1); - /* skip over children that are down */ - while ((child_index < priv->child_count) - && !local->child_up[child_index]) - child_index++; + for (i = 0; i < priv->child_count; i++) { + if (!local->transaction.pre_op[i]) + continue; + + STACK_WIND_COOKIE (frame, afr_changelog_fsync_cbk, + (void *) (long) i, priv->children[i], + priv->children[i]->fops->fsync, local->fd, + 1, xdata); + if (!--call_count) + break; + } - if ((child_index == priv->child_count) && - local->transaction.lock_count == 0) { + if (xdata) + dict_unref (xdata); - gf_log (this->name, GF_LOG_DEBUG, - "unable to lock on even one child"); + return 0; +} - local->op_ret = -1; - local->op_errno = EAGAIN; - local->transaction.done (frame, this); - - return 0; + int +afr_changelog_post_op_safe (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; - } + local = frame->local; + priv = this->private; + + if (!local->fd || local->transaction.type != AFR_DATA_TRANSACTION) { + afr_changelog_post_op_now (frame, this); + return 0; + } + + if (is_piggyback_post_op (frame, local->fd)) { + /* just detected that this post-op is about to + be optimized away as a new write() has + already piggybacked on this frame's changelog. + */ + afr_changelog_post_op_now (frame, this); + return 0; + } - if ((child_index == priv->child_count) - || (local->transaction.lock_count == - afr_lock_server_count (priv, local->transaction.type))) { + /* Calling afr_changelog_post_op_now() now will result in + issuing ->[f]xattrop(). + + Performing a hard POST-OP (->[f]xattrop() FOP) is a more + responsible operation that what it might appear on the surface. + + The changelog of a file (in the xattr of the file on the server) + stores information (pending count) about the state of the file + on the OTHER server. This changelog is blindly trusted, and must + therefore be updated in such a way it remains trustworthy. This + implies that decrementing the pending count (essentially "clearing + the dirty flag") must be done STRICTLY after we are sure that the + operation on the other server has reached stable storage. + + While the backend filesystem on that server will eventually flush + it to stable storage, we (being in userspace) have no mechanism + to get notified when the write became "stable". + + This means we need take matter into our own hands and issue an + fsync() EVEN IF THE APPLICATION WAS PERFORMING UNSTABLE WRITES, + and get an acknowledgement for it. And we need to wait for the + fsync() acknowledgement before initiating the hard POST-OP. + + However if the FD itself was opened in O_SYNC or O_DSYNC then + we are already guaranteed that the writes were made stable as + part of the FOP itself. The same holds true for NFS stable + writes which happen on an anonymous FD with O_DSYNC or O_SYNC + flag set in the writev() @flags param. For all other write types, + mark a flag in the fdctx whenever an unstable write is witnessed. + */ + + if (!afr_fd_has_witnessed_unstable_write (this, local->fd)) { + afr_changelog_post_op_now (frame, this); + return 0; + } - /* we're done locking */ + /* Check whether users want durability and perform fsync/post-op + * accordingly. + */ + if (priv->ensure_durability) { + /* Time to fsync() */ + afr_changelog_fsync (frame, this); + } else { + afr_changelog_post_op_now (frame, this); + } - if (__changelog_needed_pre_op (frame, this)) { - afr_changelog_pre_op (frame, this); - } else { - __mark_all_success (local->pending, priv->child_count, - local->transaction.type); + return 0; +} - afr_pid_restore (frame); - local->transaction.fop (frame, this); - } +void +afr_delayed_changelog_post_op (xlator_t *this, call_frame_t *frame, fd_t *fd, + call_stub_t *stub) +{ + afr_fd_ctx_t *fd_ctx = NULL; + call_frame_t *prev_frame = NULL; + struct timespec delta = {0, }; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; - return 0; - } + priv = this->private; + + fd_ctx = afr_fd_ctx_get (fd, this); + if (!fd_ctx) + goto out; - switch (local->transaction.type) { - case AFR_DATA_TRANSACTION: - case AFR_METADATA_TRANSACTION: - case AFR_FLUSH_TRANSACTION: - - if (local->fd) { - STACK_WIND_COOKIE (frame, afr_lock_cbk, - (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->finodelk, - this->name, local->fd, - F_SETLKW, &flock); - - } else { - STACK_WIND_COOKIE (frame, afr_lock_cbk, - (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->inodelk, - this->name, &local->loc, - F_SETLKW, &flock); - } - - break; - - case AFR_ENTRY_RENAME_TRANSACTION: + delta.tv_sec = priv->post_op_delay_secs; + delta.tv_nsec = 0; + + pthread_mutex_lock (&fd_ctx->delay_lock); { - local->call_count = 2; - - lower = lower_path (&local->transaction.parent_loc, - local->transaction.basename, - &local->transaction.new_parent_loc, - local->transaction.new_basename); - - lower_name = (lower == &local->transaction.parent_loc ? - local->transaction.basename : - local->transaction.new_basename); - - higher = (lower == &local->transaction.parent_loc ? - &local->transaction.new_parent_loc : - &local->transaction.parent_loc); - - higher_name = (higher == &local->transaction.parent_loc ? - local->transaction.basename : - local->transaction.new_basename); - - - /* TODO: these locks should be blocking */ - - STACK_WIND_COOKIE (frame, afr_lock_cbk, - (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->entrylk, - this->name, lower, lower_name, - ENTRYLK_LOCK, ENTRYLK_WRLCK); - - STACK_WIND_COOKIE (frame, afr_lock_cbk, - (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->entrylk, - this->name, higher, higher_name, - ENTRYLK_LOCK, ENTRYLK_WRLCK); - - break; - } - - case AFR_ENTRY_TRANSACTION: - if (local->fd) { - STACK_WIND_COOKIE (frame, afr_lock_cbk, - (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->fentrylk, - this->name, local->fd, - local->transaction.basename, - ENTRYLK_LOCK, ENTRYLK_WRLCK); - } else { - STACK_WIND_COOKIE (frame, afr_lock_cbk, - (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->entrylk, - this->name, - &local->transaction.parent_loc, - local->transaction.basename, - ENTRYLK_LOCK, ENTRYLK_WRLCK); - } - - break; + prev_frame = fd_ctx->delay_frame; + fd_ctx->delay_frame = NULL; + if (fd_ctx->delay_timer) + gf_timer_call_cancel (this->ctx, fd_ctx->delay_timer); + fd_ctx->delay_timer = NULL; + if (!frame) + goto unlock; + fd_ctx->delay_timer = gf_timer_call_after (this->ctx, delta, + afr_delayed_changelog_wake_up_cbk, + fd); + fd_ctx->delay_frame = frame; } +unlock: + pthread_mutex_unlock (&fd_ctx->delay_lock); - return 0; +out: + if (prev_frame) { + local = prev_frame->local; + local->transaction.resume_stub = stub; + afr_changelog_post_op_safe (prev_frame, this); + } else if (stub) { + call_resume (stub); + } } -int32_t afr_lock (call_frame_t *frame, xlator_t *this) +void +afr_changelog_post_op (call_frame_t *frame, xlator_t *this) { - afr_pid_save (frame); + afr_local_t *local = NULL; - frame->root->pid = (long) frame->root; + local = frame->local; - return afr_lock_rec (frame, this, 0); + if (is_afr_delayed_changelog_post_op_needed (frame, this)) + afr_delayed_changelog_post_op (this, frame, local->fd, NULL); + else + afr_changelog_post_op_safe (frame, this); } -/* }}} */ -int32_t +/* Wake up the sleeping/delayed post-op, and also register + a stub to have it resumed after this transaction + completely finishes. + + The @stub gets saved in @local and gets resumed in + afr_local_cleanup() + */ +void +afr_delayed_changelog_wake_resume (xlator_t *this, fd_t *fd, call_stub_t *stub) +{ + afr_delayed_changelog_post_op (this, NULL, fd, stub); +} + + +void +afr_delayed_changelog_wake_up (xlator_t *this, fd_t *fd) +{ + afr_delayed_changelog_post_op (this, NULL, fd, NULL); +} + + + int afr_transaction_resume (call_frame_t *frame, xlator_t *this) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + + local = frame->local; + int_lock = &local->internal_lock; + priv = this->private; + + if (local->transaction.eager_lock_on) { + /* We don't need to retain "local" in the + fd list anymore, writes to all subvols + are finished by now */ + LOCK (&local->fd->lock); + { + list_del_init (&local->transaction.eager_locked); + } + UNLOCK (&local->fd->lock); + } - local = frame->local; - priv = this->private; - - if (__changelog_needed_post_op (frame, this)) { - afr_changelog_post_op (frame, this); - } else { - if (afr_lock_server_count (priv, local->transaction.type) == 0) { - local->transaction.done (frame, this); - } else { - afr_unlock (frame, this); - } - } + afr_restore_lk_owner (frame); + + if (__fop_changelog_needed (frame, this)) { + afr_changelog_post_op (frame, this); + } else { + if (afr_lock_server_count (priv, local->transaction.type) == 0) { + local->transaction.done (frame, this); + } else { + int_lock->lock_cbk = local->transaction.done; + afr_unlock (frame, this); + } + } - return 0; + return 0; } @@ -1121,54 +1820,144 @@ afr_transaction_resume (call_frame_t *frame, xlator_t *this) */ void -afr_transaction_fop_failed (call_frame_t *frame, xlator_t *this, int child_index) +afr_transaction_fop_failed (call_frame_t *frame, xlator_t *this, + int child_index) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + afr_local_t * local = NULL; + afr_private_t * priv = NULL; - local = frame->local; - priv = this->private; + local = frame->local; + priv = this->private; - switch (local->op) { - case GF_FOP_WRITE: - __mark_fop_failed_on_fd (local->fd, this, child_index); - break; - default: - __mark_child_dead (local->pending, priv->child_count, - child_index, local->transaction.type); - break; + __mark_child_dead (local->pending, priv->child_count, + child_index, local->transaction.type); +} + + + + static gf_boolean_t +afr_locals_overlap (afr_local_t *local1, afr_local_t *local2) +{ + uint64_t start1 = local1->transaction.start; + uint64_t start2 = local2->transaction.start; + uint64_t end1 = 0; + uint64_t end2 = 0; + + if (local1->transaction.len) + end1 = start1 + local1->transaction.len - 1; + else + end1 = ULLONG_MAX; + + if (local2->transaction.len) + end2 = start2 + local2->transaction.len - 1; + else + end2 = ULLONG_MAX; + + return ((end1 >= start2) && (end2 >= start1)); +} + +void +afr_transaction_eager_lock_init (afr_local_t *local, xlator_t *this) +{ + afr_private_t *priv = NULL; + afr_fd_ctx_t *fdctx = NULL; + afr_local_t *each = NULL; + + priv = this->private; + + if (!local->fd) + return; + + if (local->transaction.type != AFR_DATA_TRANSACTION) + return; + + if (!priv->eager_lock) + return; + + fdctx = afr_fd_ctx_get (local->fd, this); + if (!fdctx) + return; + + if (afr_are_multiple_fds_opened (local->fd->inode, this)) + return; + /* + * Once full file lock is acquired in eager-lock phase, overlapping + * writes do not compete for inode-locks, instead are transferred to the + * next writes. Because of this overlapping writes are not ordered. + * This can cause inconsistencies in replication. + * Example: + * Two overlapping writes w1, w2 are sent in parallel on same fd + * in two threads t1, t2. + * Both threads can execute afr_writev_wind in the following manner. + * t1 winds w1 on brick-0 + * t2 winds w2 on brick-0 + * t2 winds w2 on brick-1 + * t1 winds w1 on brick-1 + * + * This check makes sure the locks are not transferred for + * overlapping writes. + */ + LOCK (&local->fd->lock); + { + list_for_each_entry (each, &fdctx->eager_locked, + transaction.eager_locked) { + if (afr_locals_overlap (each, local)) { + local->transaction.eager_lock_on = _gf_false; + goto unlock; + } + } + + local->transaction.eager_lock_on = _gf_true; + list_add_tail (&local->transaction.eager_locked, + &fdctx->eager_locked); } +unlock: + UNLOCK (&local->fd->lock); } -int32_t +int afr_transaction (call_frame_t *frame, xlator_t *this, afr_transaction_type type) { - afr_local_t * local = NULL; - afr_private_t * priv = NULL; + afr_local_t * local = NULL; + afr_private_t * priv = NULL; + fd_t *fd = NULL; + int ret = -1; - local = frame->local; - priv = this->private; + local = frame->local; + priv = this->private; - afr_transaction_local_init (local, priv); + local->transaction.resume = afr_transaction_resume; + local->transaction.type = type; - local->transaction.resume = afr_transaction_resume; - local->transaction.type = type; + ret = afr_transaction_local_init (local, this); + if (ret < 0) + goto out; - if (afr_lock_server_count (priv, local->transaction.type) == 0) { - if (__changelog_needed_pre_op (frame, this)) { - afr_changelog_pre_op (frame, this); - } else { - __mark_all_success (local->pending, priv->child_count, - local->transaction.type); + afr_transaction_eager_lock_init (local, this); - afr_pid_restore (frame); + if (local->fd && local->transaction.eager_lock_on) + afr_set_lk_owner (frame, this, local->fd); + else + afr_set_lk_owner (frame, this, frame->root); - local->transaction.fop (frame, this); - } - } else { - afr_lock (frame, this); - } + if (!local->transaction.eager_lock_on && local->loc.inode) { + fd = fd_lookup (local->loc.inode, frame->root->pid); + if (fd == NULL) + fd = fd_lookup_anonymous (local->loc.inode); + + if (fd) { + afr_delayed_changelog_wake_up (this, fd); + fd_unref (fd); + } + } - return 0; + if (afr_lock_server_count (priv, local->transaction.type) == 0) { + afr_internal_lock_finish (frame, this); + } else { + afr_lock (frame, this); + } + ret = 0; +out: + return ret; } diff --git a/xlators/cluster/afr/src/afr-transaction.h b/xlators/cluster/afr/src/afr-transaction.h index c7a6490e7..fa626fd0d 100644 --- a/xlators/cluster/afr/src/afr-transaction.h +++ b/xlators/cluster/afr/src/afr-transaction.h @@ -1,30 +1,51 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef __TRANSACTION_H__ #define __TRANSACTION_H__ +typedef enum { + LOCAL_FIRST = 1, + LOCAL_LAST = 2 +} afr_xattrop_type_t; + void afr_transaction_fop_failed (call_frame_t *frame, xlator_t *this, int child_index); +int +afr_lock_server_count (afr_private_t *priv, afr_transaction_type type); + +afr_inodelk_t* +afr_get_inodelk (afr_internal_lock_t *int_lock, char *dom); + int32_t afr_transaction (call_frame_t *frame, xlator_t *this, afr_transaction_type type); +afr_fd_ctx_t * +afr_fd_ctx_get (fd_t *fd, xlator_t *this); +int +afr_set_pending_dict (afr_private_t *priv, dict_t *xattr, int32_t **pending, + int child, afr_xattrop_type_t op); +void +afr_set_delayed_post_op (call_frame_t *frame, xlator_t *this); + +void +afr_delayed_changelog_wake_up (xlator_t *this, fd_t *fd); + +void +__mark_all_success (int32_t *pending[], int child_count, + afr_transaction_type type); +gf_boolean_t +afr_any_fops_failed (afr_local_t *local, afr_private_t *priv); + +gf_boolean_t +afr_txn_nothing_failed (call_frame_t *frame, xlator_t *this); #endif /* __TRANSACTION_H__ */ diff --git a/xlators/cluster/afr/src/afr.c b/xlators/cluster/afr/src/afr.c index 9021b8820..c724eb2ae 100644 --- a/xlators/cluster/afr/src/afr.c +++ b/xlators/cluster/afr/src/afr.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #include <libgen.h> @@ -28,2569 +19,775 @@ #define _CONFIG_H #include "config.h" #endif +#include "afr-common.c" -#include "glusterfs.h" -#include "afr.h" -#include "dict.h" -#include "xlator.h" -#include "hashfn.h" -#include "logging.h" -#include "stack.h" -#include "list.h" -#include "call-stub.h" -#include "defaults.h" -#include "common-utils.h" -#include "compat-errno.h" -#include "compat.h" -#include "byte-order.h" - -#include "fd.h" - -#include "afr-inode-read.h" -#include "afr-inode-write.h" -#include "afr-dir-read.h" -#include "afr-dir-write.h" -#include "afr-transaction.h" - -#include "afr-self-heal.h" - - -uint64_t -afr_is_split_brain (xlator_t *this, inode_t *inode) -{ - int ret = 0; - - uint64_t ctx = 0; - uint64_t split_brain = 0; - - LOCK (&inode->lock); - { - ret = __inode_ctx_get (inode, this, &ctx); - - if (ret < 0) - goto unlock; - - split_brain = ctx & 0xFFFFFFFF00000000ULL; - } -unlock: - UNLOCK (&inode->lock); - - return split_brain; -} +#define SHD_INODE_LRU_LIMIT 2048 +#define AFR_EH_HEALED_LIMIT 1024 +#define AFR_EH_HEAL_FAIL_LIMIT 1024 +#define AFR_EH_SPLIT_BRAIN_LIMIT 1024 +struct volume_options options[]; -void -afr_set_split_brain (xlator_t *this, inode_t *inode, int32_t split_brain) +int32_t +notify (xlator_t *this, int32_t event, + void *data, ...) { - uint64_t ctx = 0; - int ret = 0; + int ret = -1; + va_list ap; + void *data2 = NULL; - LOCK (&inode->lock); - { - ret = __inode_ctx_get (inode, this, &ctx); + va_start (ap, data); + data2 = va_arg (ap, dict_t*); + va_end (ap); + ret = afr_notify (this, event, data, data2); - if (ret < 0) { - ctx = 0; - } + return ret; +} - ctx = (0x00000000FFFFFFFFULL & ctx) - | (split_brain & 0xFFFFFFFF00000000ULL); +int32_t +mem_acct_init (xlator_t *this) +{ + int ret = -1; - __inode_ctx_put (inode, this, ctx); - } - UNLOCK (&inode->lock); -} + if (!this) + return ret; + ret = xlator_mem_acct_init (this, gf_afr_mt_end + 1); -uint64_t -afr_read_child (xlator_t *this, inode_t *inode) -{ - int ret = 0; - - uint64_t ctx = 0; - uint64_t read_child = 0; - - LOCK (&inode->lock); - { - ret = __inode_ctx_get (inode, this, &ctx); - - if (ret < 0) - goto unlock; - - read_child = ctx & 0x00000000FFFFFFFFULL; + if (ret != 0) { + gf_log(this->name, GF_LOG_ERROR, "Memory accounting init" + "failed"); + return ret; } -unlock: - UNLOCK (&inode->lock); - return read_child; + return ret; } -void -afr_set_read_child (xlator_t *this, inode_t *inode, int32_t read_child) +int +xlator_subvolume_index (xlator_t *this, xlator_t *subvol) { - uint64_t ctx = 0; - int ret = 0; + int index = -1; + int i = 0; + xlator_list_t *list = NULL; - LOCK (&inode->lock); - { - ret = __inode_ctx_get (inode, this, &ctx); + list = this->children; - if (ret < 0) { - ctx = 0; + while (list) { + if (subvol == list->xlator || + strcmp (subvol->name, list->xlator->name) == 0) { + index = i; + break; } - - ctx = (0xFFFFFFFF00000000ULL & ctx) - | (0x00000000FFFFFFFFULL & read_child); - - __inode_ctx_put (inode, this, ctx); + list = list->next; + i++; } - UNLOCK (&inode->lock); -} - -/** - * afr_local_cleanup - cleanup everything in frame->local - */ - -void -afr_local_sh_cleanup (afr_local_t *local, xlator_t *this) -{ - afr_self_heal_t *sh = NULL; - afr_private_t *priv = NULL; - int i = 0; - - - sh = &local->self_heal; - priv = this->private; - - if (sh->buf) - FREE (sh->buf); - - if (sh->xattr) { - for (i = 0; i < priv->child_count; i++) { - if (sh->xattr[i]) { - dict_unref (sh->xattr[i]); - sh->xattr[i] = NULL; - } - } - FREE (sh->xattr); - } - - if (sh->child_errno) - FREE (sh->child_errno); - - if (sh->pending_matrix) { - for (i = 0; i < priv->child_count; i++) { - FREE (sh->pending_matrix[i]); - } - FREE (sh->pending_matrix); - } - - if (sh->delta_matrix) { - for (i = 0; i < priv->child_count; i++) { - FREE (sh->delta_matrix[i]); - } - FREE (sh->delta_matrix); - } - - if (sh->sources) - FREE (sh->sources); - - if (sh->success) - FREE (sh->success); - - if (sh->healing_fd) { - fd_unref (sh->healing_fd); - sh->healing_fd = NULL; - } - - loc_wipe (&sh->parent_loc); + return index; } - -void -afr_local_cleanup (afr_local_t *local, xlator_t *this) +void +fix_quorum_options (xlator_t *this, afr_private_t *priv, char *qtype) { - int i; - afr_private_t * priv = NULL; - - if (!local) - return; - - afr_local_sh_cleanup (local, this); - - FREE (local->child_errno); - - priv = this->private; - - for (i = 0; i < priv->child_count; i++) { - if (local->pending && local->pending[i]) - FREE (local->pending[i]); + if (priv->quorum_count && strcmp(qtype,"fixed")) { + gf_log(this->name,GF_LOG_WARNING, + "quorum-type %s overriding quorum-count %u", + qtype, priv->quorum_count); + } + if (!strcmp(qtype,"none")) { + priv->quorum_count = 0; + } + else if (!strcmp(qtype,"auto")) { + priv->quorum_count = AFR_QUORUM_AUTO; } - - FREE (local->pending); - - loc_wipe (&local->loc); - loc_wipe (&local->newloc); - - FREE (local->transaction.locked_nodes); - FREE (local->transaction.child_errno); - - FREE (local->transaction.basename); - FREE (local->transaction.new_basename); - - loc_wipe (&local->transaction.parent_loc); - loc_wipe (&local->transaction.new_parent_loc); - - if (local->fd) - fd_unref (local->fd); - - if (local->xattr_req) - dict_unref (local->xattr_req); - - FREE (local->child_up); - - { /* lookup */ - if (local->cont.lookup.xattr) - dict_unref (local->cont.lookup.xattr); - } - - { /* getxattr */ - if (local->cont.getxattr.name) - FREE (local->cont.getxattr.name); - } - - { /* lk */ - if (local->cont.lk.locked_nodes) - FREE (local->cont.lk.locked_nodes); - } - - { /* checksum */ - if (local->cont.checksum.file_checksum) - FREE (local->cont.checksum.file_checksum); - if (local->cont.checksum.dir_checksum) - FREE (local->cont.checksum.dir_checksum); - } - - { /* create */ - if (local->cont.create.fd) - fd_unref (local->cont.create.fd); - } - - { /* writev */ - FREE (local->cont.writev.vector); - } - - { /* setxattr */ - if (local->cont.setxattr.dict) - dict_unref (local->cont.setxattr.dict); - } - - { /* removexattr */ - FREE (local->cont.removexattr.name); - } - - { /* symlink */ - FREE (local->cont.symlink.linkpath); - } } - int -afr_frame_return (call_frame_t *frame) +reconfigure (xlator_t *this, dict_t *options) { - afr_local_t *local = NULL; - int call_count = 0; + afr_private_t *priv = NULL; + xlator_t *read_subvol = NULL; + int read_subvol_index = -1; + int ret = -1; + int index = -1; + char *qtype = NULL; - local = frame->local; + priv = this->private; - LOCK (&frame->lock); - { - call_count = --local->call_count; - } - UNLOCK (&frame->lock); + GF_OPTION_RECONF ("background-self-heal-count", + priv->background_self_heal_count, options, uint32, + out); - return call_count; -} + GF_OPTION_RECONF ("metadata-self-heal", + priv->metadata_self_heal, options, bool, out); -/** - * first_up_child - return the index of the first child that is up - */ + GF_OPTION_RECONF ("data-self-heal", priv->data_self_heal, options, str, + out); -int -afr_first_up_child (afr_private_t *priv) -{ - xlator_t ** children = NULL; - int ret = -1; - int i = 0; - - LOCK (&priv->lock); - { - children = priv->children; - for (i = 0; i < priv->child_count; i++) { - if (priv->child_up[i]) { - ret = i; - break; - } - } - } - UNLOCK (&priv->lock); - - return ret; -} + GF_OPTION_RECONF ("entry-self-heal", priv->entry_self_heal, options, + bool, out); + GF_OPTION_RECONF ("strict-readdir", priv->strict_readdir, options, bool, + out); -/** - * up_children_count - return the number of children that are up - */ + GF_OPTION_RECONF ("data-self-heal-window-size", + priv->data_self_heal_window_size, options, + uint32, out); -int -afr_up_children_count (int child_count, unsigned char *child_up) -{ - int i = 0; - int ret = 0; + GF_OPTION_RECONF ("data-change-log", priv->data_change_log, options, + bool, out); - for (i = 0; i < child_count; i++) - if (child_up[i]) - ret++; - return ret; -} + GF_OPTION_RECONF ("metadata-change-log", + priv->metadata_change_log, options, bool, out); + GF_OPTION_RECONF ("entry-change-log", priv->entry_change_log, options, + bool, out); -int -afr_locked_nodes_count (unsigned char *locked_nodes, int child_count) -{ - int ret = 0; - int i; + GF_OPTION_RECONF ("data-self-heal-algorithm", + priv->data_self_heal_algorithm, options, str, out); - for (i = 0; i < child_count; i++) - if (locked_nodes[i]) - ret++; + GF_OPTION_RECONF ("self-heal-daemon", priv->shd.enabled, options, bool, out); - return ret; -} + GF_OPTION_RECONF ("read-subvolume", read_subvol, options, xlator, out); + GF_OPTION_RECONF ("read-hash-mode", priv->hash_mode, + options, uint32, out); -ino64_t -afr_itransform (ino64_t ino, int child_count, int child_index) -{ - ino64_t scaled_ino = -1; + if (read_subvol) { + index = xlator_subvolume_index (this, read_subvol); + if (index == -1) { + gf_log (this->name, GF_LOG_ERROR, "%s not a subvolume", + read_subvol->name); + goto out; + } + priv->read_child = index; + } - if (ino == ((uint64_t) -1)) { - scaled_ino = ((uint64_t) -1); - goto out; - } + GF_OPTION_RECONF ("read-subvolume-index",read_subvol_index, options,int32,out); - scaled_ino = (ino * child_count) + child_index; + if (read_subvol_index >-1) { + index=read_subvol_index; + if (index >= priv->child_count) { + gf_log (this->name, GF_LOG_ERROR, "%d not a subvolume-index", + index); + goto out; + } + priv->read_child = index; + } + GF_OPTION_RECONF ("eager-lock", priv->eager_lock, options, bool, out); + GF_OPTION_RECONF ("quorum-type", qtype, options, str, out); + GF_OPTION_RECONF ("quorum-count", priv->quorum_count, options, + uint32, out); + fix_quorum_options(this,priv,qtype); + GF_OPTION_RECONF ("heal-timeout", priv->shd.timeout, options, + int32, out); + + GF_OPTION_RECONF ("post-op-delay-secs", priv->post_op_delay_secs, options, + uint32, out); + + GF_OPTION_RECONF (AFR_SH_READDIR_SIZE_KEY, priv->sh_readdir_size, + options, size, out); + /* Reset this so we re-discover in case the topology changed. */ + GF_OPTION_RECONF ("readdir-failover", priv->readdir_failover, options, + bool, out); + GF_OPTION_RECONF ("ensure-durability", priv->ensure_durability, options, + bool, out); + priv->did_discovery = _gf_false; + + ret = 0; out: - return scaled_ino; -} - - -int -afr_deitransform_orig (ino64_t ino, int child_count) -{ - int index = -1; - - index = ino % child_count; - - return index; -} - - -int -afr_deitransform (ino64_t ino, int child_count) -{ - return 0; -} - - -int -afr_self_heal_cbk (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; - - local = frame->local; - - if (local->govinda_gOvinda) { - afr_set_split_brain (this, local->cont.lookup.inode, 1); - } else { - afr_set_split_brain (this, local->cont.lookup.inode, 0); - } - - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->cont.lookup.inode, - &local->cont.lookup.buf, - local->cont.lookup.xattr); + return ret; - return 0; } -int -afr_lookup_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf, dict_t *xattr) -{ - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - struct stat * lookup_buf = NULL; - int call_count = -1; - int child_index = -1; - - uint32_t open_fd_count = 0; - int ret = 0; - - child_index = (long) cookie; - priv = this->private; - - LOCK (&frame->lock); - { - local = frame->local; - - lookup_buf = &local->cont.lookup.buf; - - if (op_ret == -1) { - if (op_errno == ENOENT) - local->enoent_count++; - - if (op_errno != ENOTCONN) { - if (local->op_errno != ESTALE) - local->op_errno = op_errno; - } - - if (op_errno == ESTALE) { - /* no matter what other subvolumes return for - * this call, ESTALE _must_ be sent to parent - */ - local->op_ret = -1; - local->op_errno = ESTALE; - } - goto unlock; - } - - if (afr_sh_has_metadata_pending (xattr, child_index, this)) - local->need_metadata_self_heal = 1; - - if (afr_sh_has_entry_pending (xattr, child_index, this)) - local->need_entry_self_heal = 1; - - if (afr_sh_has_data_pending (xattr, child_index, this)) - local->need_data_self_heal = 1; - - ret = dict_get_uint32 (xattr, GLUSTERFS_OPEN_FD_COUNT, - &open_fd_count); - local->open_fd_count += open_fd_count; - - /* in case of revalidate, we need to send stat of the - * child whose stat was sent during the first lookup. - * (so that time stamp does not vary with revalidate. - * in case it is down, stat of the fist success will - * be replied */ - - /* inode number should be preserved across revalidates */ - - if (local->success_count == 0) { - if (local->op_errno != ESTALE) - local->op_ret = op_ret; - - local->cont.lookup.inode = inode; - local->cont.lookup.xattr = dict_ref (xattr); - - *lookup_buf = *buf; - lookup_buf->st_ino = afr_itransform (buf->st_ino, - priv->child_count, - child_index); - - if (priv->read_child >= 0) { - afr_set_read_child (this, - local->cont.lookup.inode, - priv->read_child); - } else { - afr_set_read_child (this, - local->cont.lookup.inode, - child_index); - } - - } else { - if (FILETYPE_DIFFERS (buf, lookup_buf)) { - /* mismatching filetypes with same name - -- Govinda !! GOvinda !!! - */ - local->govinda_gOvinda = 1; - } - - if (PERMISSION_DIFFERS (buf, lookup_buf)) { - /* mismatching permissions */ - local->need_metadata_self_heal = 1; - } - - if (OWNERSHIP_DIFFERS (buf, lookup_buf)) { - /* mismatching permissions */ - local->need_metadata_self_heal = 1; - } - - if (SIZE_DIFFERS (buf, lookup_buf) - && S_ISREG (buf->st_mode)) { - local->need_data_self_heal = 1; - } - - if (child_index == local->read_child_index) { - - /* - lookup has succeeded on the read child. - So use its inode number - */ - if (local->op_errno != ESTALE) - local->op_ret = op_ret; - - if (local->cont.lookup.xattr) - dict_unref (local->cont.lookup.xattr); - - local->cont.lookup.inode = inode; - local->cont.lookup.xattr = dict_ref (xattr); - - *lookup_buf = *buf; - lookup_buf->st_ino = afr_itransform (buf->st_ino, - priv->child_count, - child_index); - - if (priv->read_child >= 0) { - afr_set_read_child (this, - local->cont.lookup.inode, - priv->read_child); - } else { - afr_set_read_child (this, - local->cont.lookup.inode, - local->read_child_index); - } - } - - } - - local->success_count++; - } -unlock: - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) { - if (local->op_ret == 0) { - /* KLUDGE: assuming DHT will not itransform in - revalidate */ - if (local->cont.lookup.inode->ino) - lookup_buf->st_ino = - local->cont.lookup.inode->ino; - } - - if (local->success_count && local->enoent_count) { - local->need_metadata_self_heal = 1; - local->need_data_self_heal = 1; - local->need_entry_self_heal = 1; - } - - if (local->success_count) { - /* check for split-brain case in previous lookup */ - if (afr_is_split_brain (this, - local->cont.lookup.inode)) - local->need_data_self_heal = 1; - } - - if ((local->need_metadata_self_heal - || local->need_data_self_heal - || local->need_entry_self_heal) - && (!local->open_fd_count)) { - - if (!local->cont.lookup.inode->st_mode) { - /* fix for RT #602 */ - local->cont.lookup.inode->st_mode = - lookup_buf->st_mode; - } - - afr_self_heal (frame, this, afr_self_heal_cbk); - } else { - AFR_STACK_UNWIND (frame, local->op_ret, - local->op_errno, - local->cont.lookup.inode, - &local->cont.lookup.buf, - local->cont.lookup.xattr); - } - } - - return 0; -} +static const char *favorite_child_warning_str = "You have specified subvolume '%s' " + "as the 'favorite child'. This means that if a discrepancy in the content " + "or attributes (ownership, permission, etc.) of a file is detected among " + "the subvolumes, the file on '%s' will be considered the definitive " + "version and its contents will OVERWRITE the contents of the file on other " + "subvolumes. All versions of the file except that on '%s' " + "WILL BE LOST."; -int -afr_lookup (call_frame_t *frame, xlator_t *this, - loc_t *loc, dict_t *xattr_req) +int32_t +init (xlator_t *this) { - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - int ret = -1; - int i = 0; - - uint64_t ctx; - - int32_t op_errno = 0; - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - local->op_ret = -1; - - frame->local = local; - - loc_copy (&local->loc, loc); - - ret = inode_ctx_get (loc->inode, this, &ctx); - if (ret == 0) { - /* lookup is a revalidate */ - - local->read_child_index = afr_read_child (this, loc->inode); - } else { - LOCK (&priv->read_child_lock); - { - local->read_child_index = (++priv->read_child_rr) - % (priv->child_count); - } - UNLOCK (&priv->read_child_lock); + afr_private_t *priv = NULL; + int child_count = 0; + xlator_list_t *trav = NULL; + int i = 0; + int ret = -1; + GF_UNUSED int op_errno = 0; + xlator_t *read_subvol = NULL; + int read_subvol_index = -1; + xlator_t *fav_child = NULL; + char *qtype = NULL; + + if (!this->children) { + gf_log (this->name, GF_LOG_ERROR, + "replicate translator needs more than one " + "subvolume defined."); + return -1; } - local->call_count = priv->child_count; - - local->child_up = memdup (priv->child_up, priv->child_count); - local->child_count = afr_up_children_count (priv->child_count, - local->child_up); - - /* By default assume ENOTCONN. On success it will be set to 0. */ - local->op_errno = ENOTCONN; - - if (xattr_req == NULL) - local->xattr_req = dict_new (); - else - local->xattr_req = dict_ref (xattr_req); - - for (i = 0; i < priv->child_count; i++) { - ret = dict_set_uint64 (local->xattr_req, priv->pending_key[i], - 3 * sizeof(int32_t)); - - /* 3 = data+metadata+entry */ + if (!this->parents) { + gf_log (this->name, GF_LOG_WARNING, + "Volume is dangling."); } - ret = dict_set_uint64 (local->xattr_req, GLUSTERFS_OPEN_FD_COUNT, 0); - - for (i = 0; i < priv->child_count; i++) { - STACK_WIND_COOKIE (frame, afr_lookup_cbk, (void *) (long) i, - priv->children[i], - priv->children[i]->fops->lookup, - loc, local->xattr_req); - } - - ret = 0; -out: - if (ret == -1) - AFR_STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL); - - return 0; -} - - -/* {{{ open */ - -int -afr_fd_ctx_set (xlator_t *this, fd_t *fd) -{ - afr_private_t * priv = NULL; - - int op_ret = 0; - int ret = 0; - - uint64_t ctx; - afr_fd_ctx_t * fd_ctx = NULL; + this->private = GF_CALLOC (1, sizeof (afr_private_t), + gf_afr_mt_afr_private_t); + if (!this->private) + goto out; priv = this->private; + LOCK_INIT (&priv->lock); + LOCK_INIT (&priv->read_child_lock); + //lock recovery is not done in afr + pthread_mutex_init (&priv->mutex, NULL); + INIT_LIST_HEAD (&priv->saved_fds); - LOCK (&fd->lock); - { - ret = __fd_ctx_get (fd, this, &ctx); - - if (ret == 0) - goto out; + child_count = xlator_subvolume_count (this); - fd_ctx = CALLOC (1, sizeof (afr_fd_ctx_t)); - if (!fd_ctx) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - - op_ret = -ENOMEM; - goto out; - } + priv->child_count = child_count; - fd_ctx->child_failed = CALLOC (sizeof (*fd_ctx->child_failed), - priv->child_count); - - if (!fd_ctx->child_failed) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); + priv->read_child = -1; - op_ret = -ENOMEM; + GF_OPTION_INIT ("read-subvolume", read_subvol, xlator, out); + if (read_subvol) { + priv->read_child = xlator_subvolume_index (this, read_subvol); + if (priv->read_child == -1) { + gf_log (this->name, GF_LOG_ERROR, "%s not a subvolume", + read_subvol->name); goto out; } - - ret = __fd_ctx_set (fd, this, (uint64_t)(long) fd_ctx); - if (ret < 0) { - op_ret = ret; + } + GF_OPTION_INIT ("read-subvolume-index",read_subvol_index,int32,out); + if (read_subvol_index > -1) { + if (read_subvol_index >= priv->child_count) { + gf_log (this->name, GF_LOG_ERROR, "%d not a subvolume-index", + read_subvol_index); + goto out; } + priv->read_child = read_subvol_index; } -out: - UNLOCK (&fd->lock); + GF_OPTION_INIT ("choose-local", priv->choose_local, bool, out); - return ret; -} + GF_OPTION_INIT ("read-hash-mode", priv->hash_mode, uint32, out); - -int -afr_open_ftruncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *buf) -{ - afr_local_t * local = frame->local; - int ret = 0; - - ret = afr_fd_ctx_set (this, local->fd); - - if (ret < 0) { - local->op_ret = -1; - local->op_errno = -ret; + priv->favorite_child = -1; + GF_OPTION_INIT ("favorite-child", fav_child, xlator, out); + if (fav_child) { + priv->favorite_child = xlator_subvolume_index (this, fav_child); + if (priv->favorite_child == -1) { + gf_log (this->name, GF_LOG_ERROR, "%s not a subvolume", + fav_child->name); + goto out; + } + gf_log (this->name, GF_LOG_WARNING, + favorite_child_warning_str, fav_child->name, + fav_child->name, fav_child->name); } - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->fd); - return 0; -} - - -int -afr_open_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - fd_t *fd) -{ - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int ret = 0; - - int call_count = -1; - - priv = this->private; - local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret == -1) { - local->op_errno = op_errno; - } - - if (op_ret >= 0) { - local->op_ret = op_ret; - } - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) { - if ((local->cont.open.flags & O_TRUNC) - && (local->op_ret >= 0)) { - STACK_WIND (frame, afr_open_ftruncate_cbk, - this, this->fops->ftruncate, - fd, 0); - } else { - ret = afr_fd_ctx_set (this, fd); - - if (ret < 0) { - gf_log (this->name, GF_LOG_DEBUG, - "could not set fd ctx for fd=%p", - fd); - - local->op_ret = -1; - local->op_errno = -ret; - } - - AFR_STACK_UNWIND (frame, local->op_ret, - local->op_errno, local->fd); - } - } - - return 0; -} - - -int -afr_open (call_frame_t *frame, xlator_t *this, - loc_t *loc, int32_t flags, fd_t *fd) -{ - afr_private_t * priv = NULL; - afr_local_t * local = NULL; - - int i = 0; - int ret = -1; - - int32_t call_count = 0; - int32_t op_ret = -1; - int32_t op_errno = 0; - int32_t wind_flags = flags & (~O_TRUNC); - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - VALIDATE_OR_GOTO (loc, out); - - priv = this->private; - - if (afr_is_split_brain (this, loc->inode)) { - /* self-heal failed */ - op_errno = EIO; - goto out; - } - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - frame->local = local; - call_count = local->call_count; - - local->cont.open.flags = flags; - local->fd = fd_ref (fd); - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_open_cbk, (void *) (long) i, - priv->children[i], - priv->children[i]->fops->open, - loc, wind_flags, fd); - - if (!--call_count) - break; - } - } - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, fd); - } - - return 0; -} -/* }}} */ + GF_OPTION_INIT ("background-self-heal-count", + priv->background_self_heal_count, uint32, out); -/* {{{ flush */ + GF_OPTION_INIT ("data-self-heal", priv->data_self_heal, str, out); -int -afr_flush_unwind (call_frame_t *frame, xlator_t *this) -{ - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - call_frame_t *main_frame = NULL; - - local = frame->local; - priv = this->private; - - LOCK (&frame->lock); - { - if (local->transaction.main_frame) - main_frame = local->transaction.main_frame; - local->transaction.main_frame = NULL; - } - UNLOCK (&frame->lock); - - if (main_frame) { - AFR_STACK_UNWIND (main_frame, local->op_ret, local->op_errno); - } - - return 0; -} - - -int -afr_flush_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int call_count = -1; - int child_index = (long) cookie; - int need_unwind = 0; - - local = frame->local; - priv = this->private; - - LOCK (&frame->lock); - { - if (afr_fop_failed (op_ret, op_errno)) - afr_transaction_fop_failed (frame, this, child_index); - - if (op_ret != -1) { - if (local->success_count == 0) { - local->op_ret = op_ret; - } - local->success_count++; - - if (local->success_count == priv->wait_count) { - need_unwind = 1; - } - } - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - if (need_unwind) - afr_flush_unwind (frame, this); - - call_count = afr_frame_return (frame); - - if (call_count == 0) { - local->transaction.resume (frame, this); - } - - return 0; -} + GF_OPTION_INIT ("data-self-heal-algorithm", + priv->data_self_heal_algorithm, str, out); + GF_OPTION_INIT ("data-self-heal-window-size", + priv->data_self_heal_window_size, uint32, out); -int -afr_flush_wind (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int i = 0; - int call_count = -1; - - local = frame->local; - priv = this->private; - - call_count = afr_up_children_count (priv->child_count, local->child_up); - - if (call_count == 0) { - local->transaction.resume (frame, this); - return 0; - } - - local->call_count = call_count; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND_COOKIE (frame, afr_flush_wind_cbk, - (void *) (long) i, - priv->children[i], - priv->children[i]->fops->flush, - local->fd); - - if (!--call_count) - break; - } - } - - return 0; -} + GF_OPTION_INIT ("metadata-self-heal", priv->metadata_self_heal, bool, + out); + GF_OPTION_INIT ("entry-self-heal", priv->entry_self_heal, bool, out); -int -afr_flush_done (call_frame_t *frame, xlator_t *this) -{ - afr_local_t *local = NULL; + GF_OPTION_INIT ("self-heal-daemon", priv->shd.enabled, bool, out); - local = frame->local; + GF_OPTION_INIT ("iam-self-heal-daemon", priv->shd.iamshd, bool, out); - local->transaction.unwind (frame, this); + GF_OPTION_INIT ("data-change-log", priv->data_change_log, bool, out); - AFR_STACK_DESTROY (frame); + GF_OPTION_INIT ("metadata-change-log", priv->metadata_change_log, bool, + out); - return 0; -} + GF_OPTION_INIT ("entry-change-log", priv->entry_change_log, bool, out); + GF_OPTION_INIT ("optimistic-change-log", priv->optimistic_change_log, + bool, out); -int -afr_flush (call_frame_t *frame, xlator_t *this, fd_t *fd) -{ - afr_private_t * priv = NULL; - afr_local_t * local = NULL; + GF_OPTION_INIT ("inodelk-trace", priv->inodelk_trace, bool, out); - call_frame_t * transaction_frame = NULL; + GF_OPTION_INIT ("entrylk-trace", priv->entrylk_trace, bool, out); - int ret = -1; + GF_OPTION_INIT ("strict-readdir", priv->strict_readdir, bool, out); - int op_ret = -1; - int op_errno = 0; + GF_OPTION_INIT ("eager-lock", priv->eager_lock, bool, out); + GF_OPTION_INIT ("quorum-type", qtype, str, out); + GF_OPTION_INIT ("quorum-count", priv->quorum_count, uint32, out); + GF_OPTION_INIT (AFR_SH_READDIR_SIZE_KEY, priv->sh_readdir_size, size, + out); + fix_quorum_options(this,priv,qtype); - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); + GF_OPTION_INIT ("post-op-delay-secs", priv->post_op_delay_secs, uint32, out); + GF_OPTION_INIT ("readdir-failover", priv->readdir_failover, bool, out); + GF_OPTION_INIT ("ensure-durability", priv->ensure_durability, bool, + out); - priv = this->private; + priv->wait_count = 1; - transaction_frame = copy_frame (frame); - if (!transaction_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - goto out; + priv->child_up = GF_CALLOC (sizeof (unsigned char), child_count, + gf_afr_mt_char); + if (!priv->child_up) { + ret = -ENOMEM; + goto out; } - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - transaction_frame->local = local; - - local->op = GF_FOP_FLUSH; - - local->transaction.fop = afr_flush_wind; - local->transaction.done = afr_flush_done; - local->transaction.unwind = afr_flush_unwind; - - local->fd = fd_ref (fd); - - local->transaction.main_frame = frame; - local->transaction.start = LLONG_MAX - 1; - local->transaction.len = 0; - - afr_transaction (transaction_frame, this, AFR_FLUSH_TRANSACTION); - - op_ret = 0; -out: - if (op_ret == -1) { - if (transaction_frame) - AFR_STACK_DESTROY (transaction_frame); - - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } - - return 0; -} - -/* }}} */ - - -int -afr_release (xlator_t *this, fd_t *fd) -{ - uint64_t ctx; - afr_fd_ctx_t * fd_ctx; - - int ret = 0; - - ret = fd_ctx_get (fd, this, &ctx); - - if (ret < 0) + for (i = 0; i < child_count; i++) + priv->child_up[i] = -1; /* start with unknown state. + this initialization needed + for afr_notify() to work + reliably + */ + + priv->children = GF_CALLOC (sizeof (xlator_t *), child_count, + gf_afr_mt_xlator_t); + if (!priv->children) { + ret = -ENOMEM; goto out; - - fd_ctx = (afr_fd_ctx_t *)(long) ctx; - - if (fd_ctx) { - if (fd_ctx->child_failed) - FREE (fd_ctx->child_failed); - - FREE (fd_ctx); } - -out: - return 0; -} - - -/* {{{ fsync */ - -int -afr_fsync_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno) -{ - afr_local_t *local = NULL; - - int call_count = -1; - - local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret == 0) - local->op_ret = 0; - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno); - - return 0; -} - - -int -afr_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, - int32_t datasync) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - - int ret = -1; - - int i = 0; - int32_t call_count = 0; - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - call_count = local->call_count; - frame->local = local; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, afr_fsync_cbk, - priv->children[i], - priv->children[i]->fops->fsync, - fd, datasync); - if (!--call_count) - break; - } - } - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - return 0; -} - -/* }}} */ - -/* {{{ fsync */ - -int32_t -afr_fsyncdir_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno) -{ - afr_local_t *local = NULL; - - int call_count = -1; - - local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret == 0) - local->op_ret = 0; - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno); - - return 0; -} - - -int32_t -afr_fsyncdir (call_frame_t *frame, xlator_t *this, fd_t *fd, - int32_t datasync) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - - int ret = -1; - - int i = 0; - int32_t call_count = 0; - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - call_count = local->call_count; - frame->local = local; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, afr_fsync_cbk, - priv->children[i], - priv->children[i]->fops->fsyncdir, - fd, datasync); - if (!--call_count) - break; - } - } - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - return 0; -} - -/* }}} */ - -/* {{{ xattrop */ - -int32_t -afr_xattrop_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - dict_t *xattr) -{ - afr_local_t *local = NULL; - - int call_count = -1; - - local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret == 0) - local->op_ret = 0; - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno, xattr); - - return 0; -} - - -int32_t -afr_xattrop (call_frame_t *frame, xlator_t *this, loc_t *loc, - gf_xattrop_flags_t optype, dict_t *xattr) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - - int ret = -1; - - int i = 0; - int32_t call_count = 0; - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - call_count = local->call_count; - frame->local = local; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, afr_xattrop_cbk, - priv->children[i], - priv->children[i]->fops->xattrop, - loc, optype, xattr); - if (!--call_count) - break; - } - } - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - return 0; -} - -/* }}} */ - -/* {{{ fxattrop */ - -int32_t -afr_fxattrop_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - dict_t *xattr) -{ - afr_local_t *local = NULL; - - int call_count = -1; - - local = frame->local; - LOCK (&frame->lock); - { - if (op_ret == 0) - local->op_ret = 0; - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno, xattr); - - return 0; -} - - -int32_t -afr_fxattrop (call_frame_t *frame, xlator_t *this, fd_t *fd, - gf_xattrop_flags_t optype, dict_t *xattr) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - - int ret = -1; - - int i = 0; - int32_t call_count = 0; - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - call_count = local->call_count; - frame->local = local; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, afr_fxattrop_cbk, - priv->children[i], - priv->children[i]->fops->fxattrop, - fd, optype, xattr); - if (!--call_count) - break; - } - } - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - return 0; -} - -/* }}} */ - - -int32_t -afr_inodelk_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno) - -{ - afr_local_t *local = NULL; - - int call_count = -1; - - local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret == 0) - local->op_ret = 0; - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno); - - return 0; -} - - -int32_t -afr_inodelk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, int32_t cmd, struct flock *flock) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - - int ret = -1; - - int i = 0; - int32_t call_count = 0; - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - call_count = local->call_count; - frame->local = local; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, afr_inodelk_cbk, - priv->children[i], - priv->children[i]->fops->inodelk, - volume, loc, cmd, flock); - - if (!--call_count) - break; - } - } - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - return 0; -} - - -int32_t -afr_finodelk_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno) - -{ - afr_local_t *local = NULL; - - int call_count = -1; - - local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret == 0) - local->op_ret = 0; - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno); - - return 0; -} - - -int32_t -afr_finodelk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, int32_t cmd, struct flock *flock) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - - int ret = -1; - - int i = 0; - int32_t call_count = 0; - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - call_count = local->call_count; - frame->local = local; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, afr_finodelk_cbk, - priv->children[i], - priv->children[i]->fops->finodelk, - volume, fd, cmd, flock); - - if (!--call_count) - break; - } - } - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - return 0; -} - - -int32_t -afr_entrylk_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno) - -{ - afr_local_t *local = NULL; - - int call_count = -1; - - local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret == 0) - local->op_ret = 0; - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno); - - return 0; -} - - -int32_t -afr_entrylk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, - const char *basename, entrylk_cmd cmd, entrylk_type type) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - - int ret = -1; - - int i = 0; - int32_t call_count = 0; - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - call_count = local->call_count; - frame->local = local; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, afr_entrylk_cbk, - priv->children[i], - priv->children[i]->fops->entrylk, - volume, loc, basename, cmd, type); - - if (!--call_count) - break; - } - } - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - return 0; -} - - - -int32_t -afr_fentrylk_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno) - -{ - afr_local_t *local = NULL; - - int call_count = -1; - - local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret == 0) - local->op_ret = 0; - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno); - - return 0; -} - - -int32_t -afr_fentrylk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, - const char *basename, entrylk_cmd cmd, entrylk_type type) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - - int ret = -1; - - int i = 0; - int32_t call_count = 0; - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - call_count = local->call_count; - frame->local = local; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, afr_fentrylk_cbk, - priv->children[i], - priv->children[i]->fops->fentrylk, - volume, fd, basename, cmd, type); - - if (!--call_count) - break; - } - } - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - return 0; -} - - -int32_t -afr_checksum_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - uint8_t *file_checksum, uint8_t *dir_checksum) - -{ - afr_local_t *local = NULL; - - int call_count = -1; - - local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret == 0 && (local->op_ret != 0)) { - local->op_ret = 0; - - local->cont.checksum.file_checksum = MALLOC (ZR_FILENAME_MAX); - memcpy (local->cont.checksum.file_checksum, file_checksum, - ZR_FILENAME_MAX); - - local->cont.checksum.dir_checksum = MALLOC (ZR_FILENAME_MAX); - memcpy (local->cont.checksum.dir_checksum, dir_checksum, - ZR_FILENAME_MAX); - - } - - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->cont.checksum.file_checksum, - local->cont.checksum.dir_checksum); - - return 0; -} - - -int32_t -afr_checksum (call_frame_t *frame, xlator_t *this, loc_t *loc, - int32_t flag) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - - int ret = -1; - - int i = 0; - int32_t call_count = 0; - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - call_count = local->call_count; - frame->local = local; - - for (i = 0; i < priv->child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, afr_checksum_cbk, - priv->children[i], - priv->children[i]->fops->checksum, - loc, flag); - - if (!--call_count) - break; - } - } - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno); - } - return 0; -} - - -int32_t -afr_statfs_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno, - struct statvfs *statvfs) -{ - afr_local_t *local = NULL; - - int call_count = 0; - - LOCK (&frame->lock); - { - local = frame->local; - - if (op_ret == 0) { - local->op_ret = op_ret; - - if (local->cont.statfs.buf_set) { - if (statvfs->f_bavail < local->cont.statfs.buf.f_bavail) - local->cont.statfs.buf = *statvfs; - } else { - local->cont.statfs.buf = *statvfs; - local->cont.statfs.buf_set = 1; - } - } - - if (op_ret == -1) - local->op_errno = op_errno; - - } - UNLOCK (&frame->lock); - - call_count = afr_frame_return (frame); - - if (call_count == 0) - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->cont.statfs.buf); - - return 0; -} - - -int32_t -afr_statfs (call_frame_t *frame, xlator_t *this, - loc_t *loc) -{ - afr_private_t * priv = NULL; - int child_count = 0; - afr_local_t * local = NULL; - int i = 0; - - int ret = -1; - int call_count = 0; - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - VALIDATE_OR_GOTO (loc, out); - - priv = this->private; - child_count = priv->child_count; - - ALLOC_OR_GOTO (local, afr_local_t, out); - - ret = AFR_LOCAL_INIT (local, priv); - if (ret < 0) { - op_errno = -ret; - goto out; - } - - frame->local = local; - call_count = local->call_count; - - for (i = 0; i < child_count; i++) { - if (local->child_up[i]) { - STACK_WIND (frame, afr_statfs_cbk, - priv->children[i], - priv->children[i]->fops->statfs, - loc); - if (!--call_count) - break; - } - } - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } - return 0; -} - - -int32_t -afr_lk_unlock_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct flock *lock) -{ - afr_local_t * local = NULL; - - int call_count = -1; - - local = frame->local; - call_count = afr_frame_return (frame); - - if (call_count == 0) - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno, - lock); - - return 0; -} - - -int32_t -afr_lk_unlock (call_frame_t *frame, xlator_t *this) -{ - afr_local_t * local = NULL; - afr_private_t * priv = NULL; - - int i; - int call_count = 0; - - local = frame->local; - priv = this->private; - - call_count = afr_locked_nodes_count (local->cont.lk.locked_nodes, - priv->child_count); - - if (call_count == 0) { - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->cont.lk.flock); - return 0; - } - - local->call_count = call_count; - - local->cont.lk.flock.l_type = F_UNLCK; - - for (i = 0; i < priv->child_count; i++) { - if (local->cont.lk.locked_nodes[i]) { - STACK_WIND (frame, afr_lk_unlock_cbk, - priv->children[i], - priv->children[i]->fops->lk, - local->fd, F_SETLK, - &local->cont.lk.flock); - - if (!--call_count) - break; - } - } - - return 0; -} - - -int32_t -afr_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct flock *lock) -{ - afr_local_t *local = NULL; - afr_private_t *priv = NULL; - - int call_count = -1; - int child_index = -1; - - local = frame->local; - priv = this->private; - - child_index = (long) cookie; - - call_count = --local->call_count; - - if (!child_went_down (op_ret, op_errno) && (op_ret == -1)) { - local->op_ret = -1; - local->op_errno = op_errno; - - afr_lk_unlock (frame, this); - return 0; - } - - if (op_ret == 0) { - local->op_ret = 0; - local->op_errno = 0; - local->cont.lk.flock = *lock; - local->cont.lk.locked_nodes[child_index] = 1; - } - - child_index++; - - if (child_index < priv->child_count) { - STACK_WIND_COOKIE (frame, afr_lk_cbk, (void *) (long) child_index, - priv->children[child_index], - priv->children[child_index]->fops->lk, - local->fd, local->cont.lk.cmd, - &local->cont.lk.flock); - } else if (local->op_ret == -1) { - /* all nodes have gone down */ - - AFR_STACK_UNWIND (frame, -1, ENOTCONN, &local->cont.lk.flock); - } else { - /* locking has succeeded on all nodes that are up */ - - AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->cont.lk.flock); - } - - return 0; -} - - -int -afr_lk (call_frame_t *frame, xlator_t *this, - fd_t *fd, int32_t cmd, - struct flock *flock) -{ - afr_private_t *priv = NULL; - afr_local_t *local = NULL; - - int i = 0; - - int32_t op_ret = -1; - int32_t op_errno = 0; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (this, out); - VALIDATE_OR_GOTO (this->private, out); - - priv = this->private; - - ALLOC_OR_GOTO (local, afr_local_t, out); - AFR_LOCAL_INIT (local, priv); - - frame->local = local; - - local->cont.lk.locked_nodes = CALLOC (priv->child_count, - sizeof (*local->cont.lk.locked_nodes)); - - if (!local->cont.lk.locked_nodes) { - gf_log (this->name, GF_LOG_ERROR, "Out of memory"); - op_errno = ENOMEM; - goto out; - } - - local->fd = fd_ref (fd); - local->cont.lk.cmd = cmd; - local->cont.lk.flock = *flock; - - STACK_WIND_COOKIE (frame, afr_lk_cbk, (void *) (long) 0, - priv->children[i], - priv->children[i]->fops->lk, - fd, cmd, flock); - - op_ret = 0; -out: - if (op_ret == -1) { - AFR_STACK_UNWIND (frame, op_ret, op_errno, NULL); - } - return 0; -} - - -/** - * find_child_index - find the child's index in the array of subvolumes - * @this: AFR - * @child: child - */ - -static int -find_child_index (xlator_t *this, xlator_t *child) -{ - afr_private_t *priv = NULL; - - int i = -1; - - priv = this->private; - - for (i = 0; i < priv->child_count; i++) { - if ((xlator_t *) child == priv->children[i]) - break; - } - - return i; -} - - -int32_t -notify (xlator_t *this, int32_t event, - void *data, ...) -{ - afr_private_t * priv = NULL; - unsigned char * child_up = NULL; - - int i = -1; - int up_children = 0; - - priv = this->private; - - if (!priv) - return 0; - - child_up = priv->child_up; - - switch (event) { - case GF_EVENT_CHILD_UP: - i = find_child_index (this, data); - - child_up[i] = 1; - - /* - if all the children were down, and one child came up, - send notify to parent - */ + priv->pending_key = GF_CALLOC (sizeof (*priv->pending_key), + child_count, + gf_afr_mt_char); + if (!priv->pending_key) { + ret = -ENOMEM; + goto out; + } - for (i = 0; i < priv->child_count; i++) - if (child_up[i]) - up_children++; + trav = this->children; + i = 0; + while (i < child_count) { + priv->children[i] = trav->xlator; - if (up_children == 1) { - gf_log (this->name, GF_LOG_NORMAL, - "Subvolume '%s' came back up; " - "going online.", ((xlator_t *)data)->name); - - default_notify (this, event, data); + ret = gf_asprintf (&priv->pending_key[i], "%s.%s", + AFR_XATTR_PREFIX, + trav->xlator->name); + if (-1 == ret) { + ret = -ENOMEM; + goto out; } - break; - - case GF_EVENT_CHILD_DOWN: - i = find_child_index (this, data); - - child_up[i] = 0; - - /* - if all children are down, and this was the last to go down, - send notify to parent - */ - - for (i = 0; i < priv->child_count; i++) - if (child_up[i]) - up_children++; + trav = trav->next; + i++; + } - if (up_children == 0) { - gf_log (this->name, GF_LOG_ERROR, - "All subvolumes are down. Going offline " - "until atleast one of them comes back up."); + ret = gf_asprintf (&priv->sh_domain, AFR_SH_DATA_DOMAIN_FMT, + this->name); + if (-1 == ret) { + ret = -ENOMEM; + goto out; + } - default_notify (this, event, data); - } + priv->last_event = GF_CALLOC (child_count, sizeof (*priv->last_event), + gf_afr_mt_int32_t); + if (!priv->last_event) { + ret = -ENOMEM; + goto out; + } - break; + /* keep more local here as we may need them for self-heal etc */ + this->local_pool = mem_pool_new (afr_local_t, 512); + if (!this->local_pool) { + ret = -1; + gf_log (this->name, GF_LOG_ERROR, + "failed to create local_t's memory pool"); + goto out; + } - default: - default_notify (this, event, data); - } + priv->first_lookup = 1; + priv->root_inode = NULL; - return 0; -} + if (!priv->shd.iamshd) { + ret = 0; + goto out; + } + ret = -ENOMEM; + priv->shd.pos = GF_CALLOC (sizeof (*priv->shd.pos), child_count, + gf_afr_mt_brick_pos_t); + if (!priv->shd.pos) + goto out; -static const char *favorite_child_warning_str = "You have specified subvolume '%s' " - "as the 'favorite child'. This means that if a discrepancy in the content " - "or attributes (ownership, permission, etc.) of a file is detected among " - "the subvolumes, the file on '%s' will be considered the definitive " - "version and its contents will OVERWRITE the contents of the file on other " - "subvolumes. All versions of the file except that on '%s' " - "WILL BE LOST."; - -static const char *no_lock_servers_warning_str = "You have set lock-server-count = 0. " - "This means correctness is NO LONGER GUARANTEED in all cases. If two or more " - "applications write to the same region of a file, there is a possibility that " - "its copies will be INCONSISTENT. Set it to a value greater than 0 unless you " - "are ABSOLUTELY SURE of what you are doing and WILL NOT HOLD GlusterFS " - "RESPONSIBLE for inconsistent data. If you are in doubt, set it to a value " - "greater than 0."; - -int32_t -init (xlator_t *this) -{ - afr_private_t * priv = NULL; - int child_count = 0; - xlator_list_t * trav = NULL; - int i = 0; - int ret = -1; - int op_errno = 0; - - char * read_subvol = NULL; - char * fav_child = NULL; - char * self_heal = NULL; - char * change_log = NULL; - - int32_t lock_server_count = 1; - - int fav_ret = -1; - int read_ret = -1; - int dict_ret = -1; - - if (!this->children) { - gf_log (this->name, GF_LOG_ERROR, - "replicate translator needs more than one " - "subvolume defined."); - return -1; - } - - if (!this->parents) { - gf_log (this->name, GF_LOG_WARNING, - "Volume is dangling."); - } - - ALLOC_OR_GOTO (this->private, afr_private_t, out); - - priv = this->private; - - read_ret = dict_get_str (this->options, "read-subvolume", &read_subvol); - priv->read_child = -1; - - fav_ret = dict_get_str (this->options, "favorite-child", &fav_child); - priv->favorite_child = -1; - - /* Default values */ - - priv->data_self_heal = 1; - priv->metadata_self_heal = 1; - priv->entry_self_heal = 1; - - dict_ret = dict_get_str (this->options, "data-self-heal", &self_heal); - if (dict_ret == 0) { - ret = gf_string2boolean (self_heal, &priv->data_self_heal); - if (ret < 0) { - gf_log (this->name, GF_LOG_WARNING, - "Invalid 'option data-self-heal %s'. " - "Defaulting to data-self-heal as 'on'", - self_heal); - priv->data_self_heal = 1; - } - } - - dict_ret = dict_get_str (this->options, "metadata-self-heal", - &self_heal); - if (dict_ret == 0) { - ret = gf_string2boolean (self_heal, &priv->metadata_self_heal); - if (ret < 0) { - gf_log (this->name, GF_LOG_WARNING, - "Invalid 'option metadata-self-heal %s'. " - "Defaulting to metadata-self-heal as 'on'.", - self_heal); - priv->metadata_self_heal = 1; - } - } - - dict_ret = dict_get_str (this->options, "entry-self-heal", &self_heal); - if (dict_ret == 0) { - ret = gf_string2boolean (self_heal, &priv->entry_self_heal); - if (ret < 0) { - gf_log (this->name, GF_LOG_WARNING, - "Invalid 'option entry-self-heal %s'. " - "Defaulting to entry-self-heal as 'on'.", - self_heal); - priv->entry_self_heal = 1; - } - } - - /* Change log options */ - - priv->data_change_log = 1; - priv->metadata_change_log = 0; - priv->entry_change_log = 1; - - dict_ret = dict_get_str (this->options, "data-change-log", - &change_log); - if (dict_ret == 0) { - ret = gf_string2boolean (change_log, &priv->data_change_log); - if (ret < 0) { - gf_log (this->name, GF_LOG_WARNING, - "Invalid 'option data-change-log %s'. " - "Defaulting to data-change-log as 'on'.", - change_log); - priv->data_change_log = 1; - } - } - - dict_ret = dict_get_str (this->options, "metadata-change-log", - &change_log); - if (dict_ret == 0) { - ret = gf_string2boolean (change_log, - &priv->metadata_change_log); - if (ret < 0) { - gf_log (this->name, GF_LOG_WARNING, - "Invalid 'option metadata-change-log %s'. " - "Defaulting to metadata-change-log as 'off'.", - change_log); - priv->metadata_change_log = 0; - } - } - - dict_ret = dict_get_str (this->options, "entry-change-log", - &change_log); - if (dict_ret == 0) { - ret = gf_string2boolean (change_log, &priv->entry_change_log); - if (ret < 0) { - gf_log (this->name, GF_LOG_WARNING, - "Invalid 'option entry-change-log %s'. " - "Defaulting to entry-change-log as 'on'.", - change_log); - priv->entry_change_log = 1; - } - } - - /* Locking options */ - - priv->data_lock_server_count = 1; - priv->metadata_lock_server_count = 0; - priv->entry_lock_server_count = 1; - - dict_ret = dict_get_int32 (this->options, "data-lock-server-count", - &lock_server_count); - if (dict_ret == 0) { - gf_log (this->name, GF_LOG_DEBUG, - "Setting data lock server count to %d.", - lock_server_count); - - if (lock_server_count == 0) - gf_log (this->name, GF_LOG_WARNING, - no_lock_servers_warning_str); - - priv->data_lock_server_count = lock_server_count; - } - - - dict_ret = dict_get_int32 (this->options, - "metadata-lock-server-count", - &lock_server_count); - if (dict_ret == 0) { - gf_log (this->name, GF_LOG_DEBUG, - "Setting metadata lock server count to %d.", - lock_server_count); - priv->metadata_lock_server_count = lock_server_count; - } - - - dict_ret = dict_get_int32 (this->options, "entry-lock-server-count", - &lock_server_count); - if (dict_ret == 0) { - gf_log (this->name, GF_LOG_DEBUG, - "Setting entry lock server count to %d.", - lock_server_count); - - priv->entry_lock_server_count = lock_server_count; - } - - trav = this->children; - while (trav) { - if (!read_ret && !strcmp (read_subvol, trav->xlator->name)) { - gf_log (this->name, GF_LOG_DEBUG, - "Subvolume '%s' specified as read child.", - trav->xlator->name); - - priv->read_child = child_count; - } - - if (fav_ret == 0 && !strcmp (fav_child, trav->xlator->name)) { - gf_log (this->name, GF_LOG_WARNING, - favorite_child_warning_str, trav->xlator->name, - trav->xlator->name, trav->xlator->name); - priv->favorite_child = child_count; - } - - child_count++; - trav = trav->next; - } - - priv->wait_count = 1; - - priv->child_count = child_count; - - LOCK_INIT (&priv->lock); - LOCK_INIT (&priv->read_child_lock); + priv->shd.pending = GF_CALLOC (sizeof (*priv->shd.pending), child_count, + gf_afr_mt_int32_t); + if (!priv->shd.pending) + goto out; - priv->child_up = CALLOC (sizeof (unsigned char), child_count); - if (!priv->child_up) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - op_errno = ENOMEM; - goto out; - } - - priv->children = CALLOC (sizeof (xlator_t *), child_count); - if (!priv->children) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - op_errno = ENOMEM; - goto out; - } - - priv->pending_key = CALLOC (sizeof (*priv->pending_key), child_count); - if (!priv->pending_key) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - op_errno = ENOMEM; + priv->shd.inprogress = GF_CALLOC (sizeof (*priv->shd.inprogress), + child_count, gf_afr_mt_shd_bool_t); + if (!priv->shd.inprogress) + goto out; + priv->shd.timer = GF_CALLOC (sizeof (*priv->shd.timer), child_count, + gf_afr_mt_shd_timer_t); + if (!priv->shd.timer) goto out; - } - trav = this->children; - i = 0; - while (i < child_count) { - priv->children[i] = trav->xlator; + priv->shd.healed = eh_new (AFR_EH_HEALED_LIMIT, _gf_false, + _destroy_shd_event_data); + if (!priv->shd.healed) + goto out; - asprintf (&priv->pending_key[i], "%s.%s", AFR_XATTR_PREFIX, - trav->xlator->name); + priv->shd.heal_failed = eh_new (AFR_EH_HEAL_FAIL_LIMIT, _gf_false, + _destroy_shd_event_data); + if (!priv->shd.heal_failed) + goto out; - trav = trav->next; - i++; - } + priv->shd.split_brain = eh_new (AFR_EH_SPLIT_BRAIN_LIMIT, _gf_false, + _destroy_shd_event_data); + if (!priv->shd.split_brain) + goto out; - ret = 0; + this->itable = inode_table_new (SHD_INODE_LRU_LIMIT, this); + if (!this->itable) + goto out; + priv->root_inode = inode_ref (this->itable->root); + GF_OPTION_INIT ("node-uuid", priv->shd.node_uuid, str, out); + GF_OPTION_INIT ("heal-timeout", priv->shd.timeout, int32, out); + ret = afr_initialise_statistics (this); + if (ret) + goto out; + ret = 0; out: - return ret; + return ret; } int fini (xlator_t *this) { - return 0; + afr_private_t *priv = NULL; + + priv = this->private; + this->private = NULL; + afr_priv_destroy (priv); + if (this->itable);//I dont see any destroy func + + return 0; } struct xlator_fops fops = { - .lookup = afr_lookup, - .open = afr_open, - .lk = afr_lk, - .flush = afr_flush, - .statfs = afr_statfs, - .fsync = afr_fsync, - .fsyncdir = afr_fsyncdir, - .xattrop = afr_xattrop, - .fxattrop = afr_fxattrop, - .inodelk = afr_inodelk, - .finodelk = afr_finodelk, - .entrylk = afr_entrylk, - .fentrylk = afr_fentrylk, - .checksum = afr_checksum, - - /* inode read */ - .access = afr_access, - .stat = afr_stat, - .fstat = afr_fstat, - .readlink = afr_readlink, - .getxattr = afr_getxattr, - .readv = afr_readv, - - /* inode write */ - .chmod = afr_chmod, - .chown = afr_chown, - .fchmod = afr_fchmod, - .fchown = afr_fchown, - .writev = afr_writev, - .truncate = afr_truncate, - .ftruncate = afr_ftruncate, - .utimens = afr_utimens, - .setxattr = afr_setxattr, - .removexattr = afr_removexattr, - - /* dir read */ - .opendir = afr_opendir, - .readdir = afr_readdir, - .getdents = afr_getdents, - - /* dir write */ - .create = afr_create, - .mknod = afr_mknod, - .mkdir = afr_mkdir, - .unlink = afr_unlink, - .rmdir = afr_rmdir, - .link = afr_link, - .symlink = afr_symlink, - .rename = afr_rename, - .setdents = afr_setdents, + .lookup = afr_lookup, + .open = afr_open, + .lk = afr_lk, + .flush = afr_flush, + .statfs = afr_statfs, + .fsync = afr_fsync, + .fsyncdir = afr_fsyncdir, + .xattrop = afr_xattrop, + .fxattrop = afr_fxattrop, + .inodelk = afr_inodelk, + .finodelk = afr_finodelk, + .entrylk = afr_entrylk, + .fentrylk = afr_fentrylk, + .fallocate = afr_fallocate, + .discard = afr_discard, + .zerofill = afr_zerofill, + + /* inode read */ + .access = afr_access, + .stat = afr_stat, + .fstat = afr_fstat, + .readlink = afr_readlink, + .getxattr = afr_getxattr, + .fgetxattr = afr_fgetxattr, + .readv = afr_readv, + + /* inode write */ + .writev = afr_writev, + .truncate = afr_truncate, + .ftruncate = afr_ftruncate, + .setxattr = afr_setxattr, + .fsetxattr = afr_fsetxattr, + .setattr = afr_setattr, + .fsetattr = afr_fsetattr, + .removexattr = afr_removexattr, + .fremovexattr = afr_fremovexattr, + + /* dir read */ + .opendir = afr_opendir, + .readdir = afr_readdir, + .readdirp = afr_readdirp, + + /* dir write */ + .create = afr_create, + .mknod = afr_mknod, + .mkdir = afr_mkdir, + .unlink = afr_unlink, + .rmdir = afr_rmdir, + .link = afr_link, + .symlink = afr_symlink, + .rename = afr_rename, }; -struct xlator_mops mops = { +struct xlator_dumpops dumpops = { + .priv = afr_priv_dump, }; struct xlator_cbks cbks = { .release = afr_release, + .releasedir = afr_releasedir, + .forget = afr_forget, }; struct volume_options options[] = { - { .key = {"read-subvolume" }, - .type = GF_OPTION_TYPE_XLATOR - }, - { .key = {"favorite-child"}, - .type = GF_OPTION_TYPE_XLATOR - }, - { .key = {"data-self-heal"}, - .type = GF_OPTION_TYPE_BOOL - }, - { .key = {"metadata-self-heal"}, - .type = GF_OPTION_TYPE_BOOL - }, - { .key = {"entry-self-heal"}, - .type = GF_OPTION_TYPE_BOOL - }, - { .key = {"data-change-log"}, - .type = GF_OPTION_TYPE_BOOL - }, - { .key = {"metadata-change-log"}, - .type = GF_OPTION_TYPE_BOOL - }, - { .key = {"entry-change-log"}, - .type = GF_OPTION_TYPE_BOOL - }, - { .key = {"data-lock-server-count"}, - .type = GF_OPTION_TYPE_INT, - .min = 0 - }, - { .key = {"metadata-lock-server-count"}, - .type = GF_OPTION_TYPE_INT, - .min = 0 - }, - { .key = {"entry-lock-server-count"}, - .type = GF_OPTION_TYPE_INT, - .min = 0 - }, - { .key = {NULL} }, + { .key = {"read-subvolume" }, + .type = GF_OPTION_TYPE_XLATOR, + .description = "inode-read fops happen only on one of the bricks in " + "replicate. Afr will prefer the one specified using " + "this option if it is not stale. Option value must be " + "one of the xlator names of the children. " + "Ex: <volname>-client-0 till " + "<volname>-client-<number-of-bricks - 1>" + }, + { .key = {"read-subvolume-index" }, + .type = GF_OPTION_TYPE_INT, + .default_value = "-1", + .description = "inode-read fops happen only on one of the bricks in " + "replicate. AFR will prefer the one specified using " + "this option if it is not stale. allowed options" + " include -1 till replica-count - 1" + }, + { .key = {"read-hash-mode" }, + .type = GF_OPTION_TYPE_INT, + .min = 0, + .max = 2, + .default_value = "0", + .description = "inode-read fops happen only on one of the bricks in " + "replicate. AFR will prefer the one computed using " + "the method specified using this option" + "0 = first responder, " + "1 = hash by GFID of file (all clients use " + "same subvolume), " + "2 = hash by GFID of file and client PID", + }, + { .key = {"choose-local" }, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "true", + .description = "Choose a local subvolume(i.e. Brick) to read from if " + "read-subvolume is not explicitly set.", + }, + { .key = {"favorite-child"}, + .type = GF_OPTION_TYPE_XLATOR, + .description = "If a split-brain happens choose subvol/brick set by " + "this option as source." + }, + { .key = {"background-self-heal-count"}, + .type = GF_OPTION_TYPE_INT, + .min = 0, + .default_value = "16", + .validate = GF_OPT_VALIDATE_MIN, + .description = "This specifies the number of self-heals that can be " + " performed in background without blocking the fop" + }, + { .key = {"data-self-heal"}, + .type = GF_OPTION_TYPE_STR, + .value = {"1", "on", "yes", "true", "enable", + "0", "off", "no", "false", "disable", + "open"}, + .default_value = "on", + .description = "Using this option we can enable/disable data " + "self-heal on the file. \"open\" means data " + "self-heal action will only be triggered by file " + "open operations." + }, + { .key = {"data-self-heal-algorithm"}, + .type = GF_OPTION_TYPE_STR, + .description = "Select between \"full\", \"diff\". The " + "\"full\" algorithm copies the entire file from " + "source to sink. The \"diff\" algorithm copies to " + "sink only those blocks whose checksums don't match " + "with those of source. If no option is configured " + "the option is chosen dynamically as follows: " + "If the file does not exist on one of the sinks " + "or empty file exists or if the source file size is " + "about the same as page size the entire file will " + "be read and written i.e \"full\" algo, " + "otherwise \"diff\" algo is chosen.", + .value = { "diff", "full"} + }, + { .key = {"data-self-heal-window-size"}, + .type = GF_OPTION_TYPE_INT, + .min = 1, + .max = 1024, + .default_value = "1", + .description = "Maximum number blocks per file for which self-heal " + "process would be applied simultaneously." + }, + { .key = {"metadata-self-heal"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Using this option we can enable/disable metadata " + "i.e. Permissions, ownerships, xattrs self-heal on " + "the file/directory." + }, + { .key = {"entry-self-heal"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Using this option we can enable/disable entry " + "self-heal on the directory." + }, + { .key = {"data-change-log"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Data fops like write/truncate will not perform " + "pre/post fop changelog operations in afr transaction " + "if this option is disabled" + }, + { .key = {"metadata-change-log"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Metadata fops like setattr/setxattr will not perform " + "pre/post fop changelog operations in afr transaction " + "if this option is disabled" + }, + { .key = {"entry-change-log"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Entry fops like create/unlink will not perform " + "pre/post fop changelog operations in afr transaction " + "if this option is disabled" + }, + { .key = {"optimistic-change-log"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Entry/Metadata fops will not perform " + "pre fop changelog operations in afr transaction " + "if this option is enabled." + }, + { .key = {"strict-readdir"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + }, + { .key = {"inodelk-trace"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + .description = "Enabling this option logs inode lock/unlocks" + }, + { .key = {"entrylk-trace"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + .description = "Enabling this option logs entry lock/unlocks" + }, + { .key = {"eager-lock"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Lock phase of a transaction has two sub-phases. " + "First is an attempt to acquire locks in parallel by " + "broadcasting non-blocking lock requests. If lock " + "aquistion fails on any server, then the held locks " + "are unlocked and revert to a blocking locked mode " + "sequentially on one server after another. If this " + "option is enabled the initial broadcasting lock " + "request attempt to acquire lock on the entire file. " + "If this fails, we revert back to the sequential " + "\"regional\" blocking lock as before. In the case " + "where such an \"eager\" lock is granted in the " + "non-blocking phase, it gives rise to an opportunity " + "for optimization. i.e, if the next write transaction " + "on the same FD arrives before the unlock phase of " + "the first transaction, it \"takes over\" the full " + "file lock. Similarly if yet another data transaction " + "arrives before the unlock phase of the \"optimized\" " + "transaction, that in turn \"takes over\" the lock as " + "well. The actual unlock now happens at the end of " + "the last \"optimzed\" transaction." + + }, + { .key = {"self-heal-daemon"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + .description = "This option applies to only self-heal-daemon. " + "Index directory crawl and automatic healing of files" + "will not be performed if this option is turned off." + }, + { .key = {"iam-self-heal-daemon"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + .description = "This option differentiates if the replicate " + "translator is running as part of self-heal-daemon " + "or not." + }, + { .key = {"quorum-type"}, + .type = GF_OPTION_TYPE_STR, + .value = { "none", "auto", "fixed"}, + .default_value = "none", + .description = "If value is \"fixed\" only allow writes if " + "quorum-count bricks are present. If value is " + "\"auto\" only allow writes if more than half of " + "bricks, or exactly half including the first, are " + "present.", + }, + { .key = {"quorum-count"}, + .type = GF_OPTION_TYPE_INT, + .min = 1, + .max = INT_MAX, + .default_value = 0, + .description = "If quorum-type is \"fixed\" only allow writes if " + "this many bricks or present. Other quorum types " + "will OVERWRITE this value.", + }, + { .key = {"node-uuid"}, + .type = GF_OPTION_TYPE_STR, + .description = "Local glusterd uuid string, used in starting " + "self-heal-daemon so that it can crawl only on " + "local index directories.", + }, + { .key = {"heal-timeout"}, + .type = GF_OPTION_TYPE_INT, + .min = 60, + .max = INT_MAX, + .default_value = "600", + .description = "time interval for checking the need to self-heal " + "in self-heal-daemon" + }, + { .key = {"post-op-delay-secs"}, + .type = GF_OPTION_TYPE_INT, + .min = 0, + .max = INT_MAX, + .default_value = "1", + .description = "Time interval induced artificially before " + "post-operation phase of the transaction to " + "enhance overlap of adjacent write operations.", + }, + { .key = {AFR_SH_READDIR_SIZE_KEY}, + .type = GF_OPTION_TYPE_SIZET, + .description = "readdirp size for performing entry self-heal", + .min = 1024, + .max = 131072, + .default_value = "1KB", + }, + { .key = {"readdir-failover"}, + .type = GF_OPTION_TYPE_BOOL, + .description = "readdir(p) will not failover if this option is off", + .default_value = "on", + }, + { .key = {"ensure-durability"}, + .type = GF_OPTION_TYPE_BOOL, + .description = "Afr performs fsyncs for transactions if this " + "option is on to make sure the changelogs/data is " + "written to the disk", + .default_value = "on", + }, + { .key = {NULL} }, }; diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h index 2871bfc47..21064db58 100644 --- a/xlators/cluster/afr/src/afr.h +++ b/xlators/cluster/afr/src/afr.h @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ @@ -26,85 +17,347 @@ #include "config.h" #endif -#include "scheduler.h" #include "call-stub.h" #include "compat-errno.h" +#include "afr-mem-types.h" +#include "afr-self-heal-algorithm.h" + +#include "libxlator.h" +#include "timer.h" #define AFR_XATTR_PREFIX "trusted.afr" +#define AFR_PATHINFO_HEADER "REPLICATE:" +#define AFR_SH_READDIR_SIZE_KEY "self-heal-readdir-size" +#define AFR_SH_DATA_DOMAIN_FMT "%s:self-heal" -typedef struct _afr_private { - gf_lock_t lock; /* to guard access to child_count, etc */ - unsigned int child_count; /* total number of children */ +#define AFR_LOCKEE_COUNT_MAX 3 +#define AFR_DOM_COUNT_MAX 3 - unsigned int read_child_rr; /* round-robin index of the read_child */ - gf_lock_t read_child_lock; /* lock to protect above */ - - xlator_t **children; +struct _pump_private; - unsigned char *child_up; +typedef int (*afr_expunge_done_cbk_t) (call_frame_t *frame, xlator_t *this, + int child, int32_t op_error, + int32_t op_errno); - char **pending_key; +typedef int (*afr_impunge_done_cbk_t) (call_frame_t *frame, xlator_t *this, + int32_t op_error, int32_t op_errno); +typedef int (*afr_post_remove_call_t) (call_frame_t *frame, xlator_t *this); - gf_boolean_t data_self_heal; /* on/off */ - gf_boolean_t metadata_self_heal; /* on/off */ - gf_boolean_t entry_self_heal; /* on/off */ +typedef int (*afr_lock_cbk_t) (call_frame_t *frame, xlator_t *this); +typedef void (*afr_lookup_done_cbk_t) (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno); - gf_boolean_t data_change_log; /* on/off */ - gf_boolean_t metadata_change_log; /* on/off */ - gf_boolean_t entry_change_log; /* on/off */ +typedef enum { + AFR_POS_UNKNOWN, + AFR_POS_LOCAL, + AFR_POS_REMOTE +} afr_child_pos_t; - int read_child; /* read-subvolume */ - unsigned int favorite_child; /* subvolume to be preferred in resolving - split-brain cases */ +typedef enum { + SPLIT_BRAIN = 1, + ALL_FOOLS = 2 +} afr_subvol_status_t; - unsigned int data_lock_server_count; - unsigned int metadata_lock_server_count; - unsigned int entry_lock_server_count; +typedef enum { + AFR_INODE_SET_READ_CTX = 1, + AFR_INODE_RM_STALE_CHILDREN, + AFR_INODE_SET_OPENDIR_DONE, + AFR_INODE_GET_READ_CTX, + AFR_INODE_GET_OPENDIR_DONE, +} afr_inode_op_t; + +typedef struct afr_inode_params_ { + afr_inode_op_t op; + union { + gf_boolean_t value; + struct { + int32_t read_child; + int32_t *children; + } read_ctx; + } u; +} afr_inode_params_t; + +typedef enum afr_spb_state { + DONT_KNOW, + SPB, + NO_SPB +} afr_spb_state_t; + +typedef struct afr_inode_ctx_ { + uint64_t masks; + int32_t *fresh_children;//increasing order of latency + afr_spb_state_t mdata_spb; + afr_spb_state_t data_spb; + uint32_t open_fd_count; +} afr_inode_ctx_t; - unsigned int wait_count; /* # of servers to wait for success */ -} afr_private_t; +typedef enum { + NONE, + INDEX, + INDEX_TO_BE_HEALED, + FULL, +} afr_crawl_type_t; + +typedef struct afr_self_heald_ { + gf_boolean_t enabled; + gf_boolean_t iamshd; + afr_crawl_type_t *pending; + gf_boolean_t *inprogress; + afr_child_pos_t *pos; + gf_timer_t **timer; + eh_t *healed; + eh_t *heal_failed; + eh_t *split_brain; + eh_t **statistics; + void **crawl_events; + char *node_uuid; + int timeout; +} afr_self_heald_t; -typedef struct { - /* array of stat's, one for each child */ - struct stat *buf; +typedef struct _afr_private { + gf_lock_t lock; /* to guard access to child_count, etc */ + unsigned int child_count; /* total number of children */ + + unsigned int read_child_rr; /* round-robin index of the read_child */ + gf_lock_t read_child_lock; /* lock to protect above */ + + xlator_t **children; - /* array of xattr's, one for each child */ - dict_t **xattr; + int first_lookup; + inode_t *root_inode; - /* array of errno's, one for each child */ - int *child_errno; + unsigned char *child_up; - int32_t **pending_matrix; - int32_t **delta_matrix; + char **pending_key; - int *sources; - int source; - int active_source; - int active_sinks; - int *success; + char *data_self_heal; /* on/off/open */ + char * data_self_heal_algorithm; /* name of algorithm */ + unsigned int data_self_heal_window_size; /* max number of pipelined + read/writes */ + + unsigned int background_self_heal_count; + unsigned int background_self_heals_started; + gf_boolean_t metadata_self_heal; /* on/off */ + gf_boolean_t entry_self_heal; /* on/off */ + + gf_boolean_t data_change_log; /* on/off */ + gf_boolean_t metadata_change_log; /* on/off */ + gf_boolean_t entry_change_log; /* on/off */ + + int read_child; /* read-subvolume */ + unsigned int hash_mode; /* for when read_child is not set */ + int favorite_child; /* subvolume to be preferred in resolving + split-brain cases */ + + gf_boolean_t inodelk_trace; + gf_boolean_t entrylk_trace; + + gf_boolean_t strict_readdir; + + unsigned int wait_count; /* # of servers to wait for success */ + + uint64_t up_count; /* number of CHILD_UPs we have seen */ + uint64_t down_count; /* number of CHILD_DOWNs we have seen */ + + struct _pump_private *pump_private; /* Set if we are loaded as pump */ + int use_afr_in_pump; + + pthread_mutex_t mutex; + struct list_head saved_fds; /* list of fds on which locks have succeeded */ + gf_boolean_t optimistic_change_log; + gf_boolean_t eager_lock; + uint32_t post_op_delay_secs; + unsigned int quorum_count; + + char vol_uuid[UUID_SIZE + 1]; + int32_t *last_event; + afr_self_heald_t shd; + gf_boolean_t choose_local; + gf_boolean_t did_discovery; + gf_boolean_t readdir_failover; + uint64_t sh_readdir_size; + gf_boolean_t ensure_durability; + char *sh_domain; +} afr_private_t; - fd_t *healing_fd; - int op_failed; +typedef enum { + AFR_SELF_HEAL_NOT_ATTEMPTED, + AFR_SELF_HEAL_STARTED, + AFR_SELF_HEAL_FAILED, + AFR_SELF_HEAL_SYNC_BEGIN, +} afr_self_heal_status; - int file_has_holes; - blksize_t block_size; - off_t file_size; - off_t offset; +typedef struct { + afr_self_heal_status gfid_or_missing_entry_self_heal; + afr_self_heal_status metadata_self_heal; + afr_self_heal_status data_self_heal; + afr_self_heal_status entry_self_heal; +} afr_sh_status_for_all_type; - loc_t parent_loc; - int (*completion_cbk) (call_frame_t *frame, xlator_t *this); - call_frame_t *sh_frame; -} afr_self_heal_t; +typedef enum { + AFR_SELF_HEAL_ENTRY, + AFR_SELF_HEAL_METADATA, + AFR_SELF_HEAL_DATA, + AFR_SELF_HEAL_GFID_OR_MISSING_ENTRY, + AFR_SELF_HEAL_INVALID = -1, +} afr_self_heal_type; +typedef enum { + AFR_CHECK_ALL, + AFR_CHECK_SPECIFIC, +} afr_sh_fail_check_type; + +struct afr_self_heal_ { + /* External interface: These are variables (some optional) that + are set by whoever has triggered self-heal */ + + gf_boolean_t do_data_self_heal; + gf_boolean_t do_metadata_self_heal; + gf_boolean_t do_entry_self_heal; + gf_boolean_t do_gfid_self_heal; + gf_boolean_t do_missing_entry_self_heal; + gf_boolean_t force_confirm_spb; /* Check for split-brains even when + self-heal is turned off */ + + gf_boolean_t forced_merge; /* Is this a self-heal triggered to + forcibly merge the directories? */ + + gf_boolean_t background; /* do self-heal in background + if possible */ + ia_type_t type; /* st_mode of the entry we're doing + self-heal on */ + inode_t *inode; /* inode on which the self-heal is + performed on */ + uuid_t sh_gfid_req; /* gfid self-heal needs to be done + with this gfid if it is not null */ + + /* Function to call to unwind. If self-heal is being done in the + background, this function will be called as soon as possible. */ + + int (*unwind) (call_frame_t *frame, xlator_t *this, int32_t op_ret, + int32_t op_errno, int32_t sh_failed); + + /* End of external interface members */ + + + /* array of stat's, one for each child */ + struct iatt *buf; + struct iatt *parentbufs; + struct iatt parentbuf; + struct iatt entrybuf; + + afr_expunge_done_cbk_t expunge_done; + afr_impunge_done_cbk_t impunge_done; + + /* array of xattr's, one for each child */ + dict_t **xattr; + + /* array containing if the lookups succeeded in the order of response + */ + int32_t *success_children; + int success_count; + /* array containing the fresh children found in the self-heal process */ + int32_t *fresh_children; + /* array containing the fresh children found in the parent lookup */ + int32_t *fresh_parent_dirs; + /* array of errno's, one for each child */ + int *child_errno; + /*loc used for lookup*/ + loc_t lookup_loc; + int32_t lookup_flags; + afr_lookup_done_cbk_t lookup_done; + + int32_t **pending_matrix; + int32_t **delta_matrix; + + int32_t op_ret; + int32_t op_errno; + + int *sources; + int source; + int active_source; + int active_sinks; + unsigned char *success; + unsigned char *locked_nodes; + int lock_count; + + const char *linkname; + gf_boolean_t entries_skipped; + + gf_boolean_t actual_sh_started; + gf_boolean_t sync_done; + gf_boolean_t data_lock_held; + gf_boolean_t sh_dom_lock_held; + gf_boolean_t eof_reached; + fd_t *healing_fd; + int file_has_holes; + blksize_t block_size; + off_t file_size; + off_t offset; + unsigned char *write_needed; + uint8_t *checksum; + afr_post_remove_call_t post_remove_call; + + char *data_sh_info; + char *metadata_sh_info; + + loc_t parent_loc; + call_frame_t *orig_frame; + call_frame_t *old_loop_frame; + gf_boolean_t unwound; + + afr_sh_algo_private_t *private; + afr_sh_status_for_all_type afr_all_sh_status; + afr_self_heal_type sh_type_in_action; + + struct afr_sh_algorithm *algo; + afr_lock_cbk_t data_lock_success_handler; + afr_lock_cbk_t data_lock_failure_handler; + gf_boolean_t data_lock_block; + int (*completion_cbk) (call_frame_t *frame, xlator_t *this); + int (*sh_data_algo_start) (call_frame_t *frame, xlator_t *this); + int (*algo_completion_cbk) (call_frame_t *frame, xlator_t *this); + int (*algo_abort_cbk) (call_frame_t *frame, xlator_t *this); + void (*gfid_sh_success_cbk) (call_frame_t *sh_frame, xlator_t *this); + + call_frame_t *sh_frame; +}; + +typedef struct afr_self_heal_ afr_self_heal_t; typedef enum { - AFR_DATA_TRANSACTION, /* truncate, write, ... */ - AFR_METADATA_TRANSACTION, /* chmod, chown, ... */ - AFR_ENTRY_TRANSACTION, /* create, rmdir, ... */ - AFR_ENTRY_RENAME_TRANSACTION, /* rename */ - AFR_FLUSH_TRANSACTION, /* flush */ + AFR_DATA_TRANSACTION, /* truncate, write, ... */ + AFR_METADATA_TRANSACTION, /* chmod, chown, ... */ + AFR_ENTRY_TRANSACTION, /* create, rmdir, ... */ + AFR_ENTRY_RENAME_TRANSACTION, /* rename */ } afr_transaction_type; +typedef enum { + AFR_TRANSACTION_LK, + AFR_SELFHEAL_LK, +} transaction_lk_type_t; + +typedef enum { + AFR_LOCK_OP, + AFR_UNLOCK_OP, +} afr_lock_op_type_t; + +typedef enum { + AFR_DATA_SELF_HEAL_LK, + AFR_METADATA_SELF_HEAL_LK, + AFR_ENTRY_SELF_HEAL_LK, +}selfheal_lk_type_t; + +typedef enum { + AFR_INODELK_TRANSACTION, + AFR_INODELK_NB_TRANSACTION, + AFR_ENTRYLK_TRANSACTION, + AFR_ENTRYLK_NB_TRANSACTION, + AFR_INODELK_SELFHEAL, + AFR_INODELK_NB_SELFHEAL, + AFR_ENTRYLK_SELFHEAL, + AFR_ENTRYLK_NB_SELFHEAL, +} afr_lock_call_type_t; /* xattr format: trusted.afr.volume = [x y z] @@ -117,9 +370,8 @@ static inline int afr_index_for_transaction_type (afr_transaction_type type) { switch (type) { - + case AFR_DATA_TRANSACTION: - case AFR_FLUSH_TRANSACTION: return 0; case AFR_METADATA_TRANSACTION: @@ -133,352 +385,551 @@ afr_index_for_transaction_type (afr_transaction_type type) return -1; /* make gcc happy */ } +typedef struct { + loc_t loc; + char *basename; + unsigned char *locked_nodes; + int locked_count; -typedef struct _afr_local { - unsigned int call_count; - unsigned int success_count; - unsigned int enoent_count; +} afr_entry_lockee_t; - unsigned int need_metadata_self_heal; - unsigned int need_entry_self_heal; - unsigned int need_data_self_heal; - unsigned int govinda_gOvinda; +int +afr_entry_lockee_cmp (const void *l1, const void *l2); - unsigned int read_child_index; +typedef struct { + char *domain; /* Domain on which inodelk is taken */ + struct gf_flock flock; + unsigned char *locked_nodes; + int32_t lock_count; +} afr_inodelk_t; - pid_t saved_pid; +typedef struct { + loc_t *lk_loc; - int32_t op_ret; - int32_t op_errno; + int lockee_count; + afr_entry_lockee_t lockee[AFR_LOCKEE_COUNT_MAX]; - int32_t **pending; + afr_inodelk_t inodelk[AFR_DOM_COUNT_MAX]; + const char *lk_basename; + const char *lower_basename; + const char *higher_basename; + char lower_locked; + char higher_locked; - loc_t loc; - loc_t newloc; + unsigned char *locked_nodes; + unsigned char *lower_locked_nodes; - fd_t *fd; + selfheal_lk_type_t selfheal_lk_type; + transaction_lk_type_t transaction_lk_type; - glusterfs_fop_t fop; + int32_t lock_count; + int32_t entrylk_lock_count; - unsigned char *child_up; - int child_count; + uint64_t lock_number; + int32_t lk_call_count; + int32_t lk_expected_count; + int32_t lk_attempted_count; - int32_t *child_errno; - - dict_t *xattr_req; - int open_fd_count; - /* - This struct contains the arguments for the "continuation" - (scheme-like) of fops - */ + int32_t lock_op_ret; + int32_t lock_op_errno; + afr_lock_cbk_t lock_cbk; + char *domain; /* Domain on which inode/entry lock/unlock in progress.*/ +} afr_internal_lock_t; - int op; - struct { - struct { - unsigned char buf_set; - struct statvfs buf; - } statfs; +typedef struct _afr_locked_fd { + fd_t *fd; + struct list_head list; +} afr_locked_fd_t; - struct { - inode_t *inode; - struct stat buf; - dict_t *xattr; - } lookup; +struct afr_reply { + int valid; + int32_t op_ret; + int32_t op_errno; +}; - struct { - int32_t flags; - } open; +typedef struct _afr_local { + int uid; + int gid; + unsigned int call_count; + unsigned int success_count; + unsigned int enoent_count; + uint32_t open_fd_count; + gf_boolean_t update_open_fd_count; - struct { - int32_t cmd; - struct flock flock; - unsigned char *locked_nodes; - } lk; - struct { - uint8_t *file_checksum; - uint8_t *dir_checksum; - } checksum; + unsigned int unhealable; - /* inode read */ + unsigned int read_child_index; + unsigned char read_child_returned; + unsigned int first_up_child; - struct { - int32_t mask; - int last_tried; /* index of the child we tried previously */ - } access; + gf_lkowner_t saved_lk_owner; - struct { - int last_tried; - ino_t ino; - } stat; + int32_t op_ret; + int32_t op_errno; - struct { - int last_tried; - ino_t ino; - } fstat; + int32_t **pending; - struct { - size_t size; - int last_tried; - } readlink; + loc_t loc; + loc_t newloc; - struct { - const char *name; - int last_tried; - } getxattr; + fd_t *fd; - struct { - size_t size; - off_t offset; - int last_tried; - } readv; + glusterfs_fop_t fop; - /* dir read */ + unsigned char *child_up; + int32_t *fresh_children; //in the order of response - struct { - int success_count; - int32_t op_ret; - int32_t op_errno; - } opendir; + int32_t *child_errno; - struct { - int32_t op_ret; - int32_t op_errno; - size_t size; - off_t offset; + dict_t *xattr_req; - int last_tried; - } readdir; + int32_t inodelk_count; + int32_t entrylk_count; - struct { - int32_t op_ret; - int32_t op_errno; + afr_internal_lock_t internal_lock; - size_t size; - off_t offset; - int32_t flag; + afr_locked_fd_t *locked_fd; + int32_t source_child; + int32_t lock_recovery_child; - int last_tried; - } getdents; + dict_t *dict; + int optimistic_change_log; + gf_boolean_t delayed_post_op; - /* inode write */ - struct { - ino_t ino; - mode_t mode; - struct stat buf; - } chmod; + /* Is the current writev() going to perform a stable write? + i.e, is fd->flags or @flags writev param have O_SYNC or + O_DSYNC? + */ + gf_boolean_t stable_write; + + /* This write appended to the file. Nnot necessarily O_APPEND, + just means the offset of write was at the end of file. + */ + gf_boolean_t append_write; + + int allow_sh_for_running_transaction; + + + /* This struct contains the arguments for the "continuation" + (scheme-like) of fops + */ + + int op; + struct { + struct { + unsigned char buf_set; + struct statvfs buf; + } statfs; + + struct { + uint32_t parent_entrylk; + uuid_t gfid_req; + inode_t *inode; + struct iatt buf; + struct iatt postparent; + dict_t **xattrs; + dict_t *xattr; + struct iatt *postparents; + struct iatt *bufs; + int32_t read_child; + int32_t *sources; + int32_t *success_children; + int32_t **pending_matrix; + gf_boolean_t fresh_lookup; + gf_boolean_t possible_spb; + } lookup; + + struct { + int32_t flags; + } open; + + struct { + int32_t cmd; + struct gf_flock user_flock; + struct gf_flock ret_flock; + unsigned char *locked_nodes; + } lk; + + /* inode read */ + + struct { + int32_t mask; + int last_index; /* index of the child we tried previously */ + } access; + + struct { + int last_index; + } stat; + + struct { + int last_index; + } fstat; + + struct { + size_t size; + int last_index; + } readlink; + + struct { + char *name; + int last_index; + long xattr_len; + } getxattr; + + struct { + size_t size; + off_t offset; + int last_index; + uint32_t flags; + } readv; + + /* dir read */ + + struct { + int success_count; + int32_t op_ret; + int32_t op_errno; + + uint32_t *checksum; + } opendir; + + struct { + int32_t op_ret; + int32_t op_errno; + size_t size; + off_t offset; + dict_t *dict; + gf_boolean_t failed; + int last_index; + } readdir; + /* inode write */ + + struct { + struct iatt prebuf; + struct iatt postbuf; + } inode_wfop; //common structure for all inode-write-fops + + struct { + int32_t op_ret; + + struct iovec *vector; + struct iobref *iobref; + int32_t count; + off_t offset; + uint32_t flags; + } writev; + + struct { + off_t offset; + } truncate; + + struct { + off_t offset; + } ftruncate; + + struct { + struct iatt in_buf; + int32_t valid; + } setattr; + + struct { + struct iatt in_buf; + int32_t valid; + } fsetattr; + + struct { + dict_t *dict; + int32_t flags; + } setxattr; + + struct { + dict_t *dict; + int32_t flags; + } fsetxattr; + + struct { + char *name; + } removexattr; + + struct { + dict_t *xattr; + } xattrop; + + struct { + dict_t *xattr; + } fxattrop; + + /* dir write */ + + struct { + inode_t *inode; + struct iatt buf; + struct iatt preparent; + struct iatt postparent; + struct iatt prenewparent; + struct iatt postnewparent; + } dir_fop; //common structure for all dir fops + + struct { + fd_t *fd; + dict_t *params; + int32_t flags; + mode_t mode; + } create; + + struct { + dev_t dev; + mode_t mode; + dict_t *params; + } mknod; + + struct { + int32_t mode; + dict_t *params; + } mkdir; + + struct { + int flags; + } rmdir; + + struct { + dict_t *params; + char *linkpath; + } symlink; struct { - ino_t ino; - mode_t mode; - struct stat buf; - } fchmod; + int32_t mode; + off_t offset; + size_t len; + } fallocate; struct { - ino_t ino; - uid_t uid; - gid_t gid; - struct stat buf; - } chown; + off_t offset; + size_t len; + } discard; - struct { - ino_t ino; - uid_t uid; - gid_t gid; - struct stat buf; - } fchown; - - struct { - ino_t ino; - struct stat buf; + struct { + off_t offset; + size_t len; + struct iatt prebuf; + struct iatt postbuf; + } zerofill; - int32_t op_ret; - struct iovec *vector; - struct iobref *iobref; - int32_t count; - off_t offset; - } writev; + } cont; - struct { - ino_t ino; - off_t offset; - struct stat buf; - } truncate; + struct { + off_t start, len; - struct { - ino_t ino; - off_t offset; - struct stat buf; - } ftruncate; + gf_boolean_t eager_lock_on; + int *eager_lock; - struct { - ino_t ino; - struct timespec tv[2]; - struct stat buf; - } utimens; + char *basename; + char *new_basename; - struct { - dict_t *dict; - int32_t flags; - } setxattr; + loc_t parent_loc; + loc_t new_parent_loc; - struct { - const char *name; - } removexattr; + afr_transaction_type type; - /* dir write */ - - struct { - ino_t ino; - fd_t *fd; - int32_t flags; - mode_t mode; - inode_t *inode; - struct stat buf; - } create; + /* pre-compute the post piggyback status before + entering POST-OP phase + */ + int *postop_piggybacked; - struct { - ino_t ino; - dev_t dev; - mode_t mode; - inode_t *inode; - struct stat buf; - } mknod; + /* stub to resume on destruction + of the transaction frame */ + call_stub_t *resume_stub; - struct { - ino_t ino; - int32_t mode; - inode_t *inode; - struct stat buf; - } mkdir; + struct list_head eager_locked; - struct { - int32_t op_ret; - int32_t op_errno; - } unlink; + int32_t **txn_changelog;//changelog after pre+post ops + unsigned char *pre_op; - struct { - int32_t op_ret; - int32_t op_errno; - } rmdir; + call_frame_t *main_frame; - struct { - ino_t ino; - struct stat buf; - } rename; + int (*fop) (call_frame_t *frame, xlator_t *this); - struct { - ino_t ino; - inode_t *inode; - struct stat buf; - } link; + int (*done) (call_frame_t *frame, xlator_t *this); - struct { - ino_t ino; - inode_t *inode; - struct stat buf; - char *linkpath; - } symlink; + int (*resume) (call_frame_t *frame, xlator_t *this); - struct { - int32_t flags; - dir_entry_t *entries; - int32_t count; - } setdents; - } cont; - - struct { - off_t start, len; + int (*unwind) (call_frame_t *frame, xlator_t *this); - unsigned char *locked_nodes; - int lock_count; + /* post-op hook */ + } transaction; - const char *basename; - const char *new_basename; + afr_self_heal_t self_heal; - loc_t parent_loc; - loc_t new_parent_loc; + struct marker_str marker; - afr_transaction_type type; + /* extra data for fops */ + dict_t *xdata_req; + dict_t *xdata_rsp; - int success_count; - int erase_pending; - int failure_count; + mode_t umask; + int xflag; + gf_boolean_t do_discovery; + struct afr_reply *replies; +} afr_local_t; - int last_tried; - int32_t *child_errno; +typedef enum { + AFR_FD_NOT_OPENED, + AFR_FD_OPENED, + AFR_FD_OPENING +} afr_fd_open_status_t; - call_frame_t *main_frame; +typedef struct { + unsigned int *pre_op_done; + afr_fd_open_status_t *opened_on; /* which subvolumes the fd is open on */ + unsigned int *pre_op_piggyback; - int (*fop) (call_frame_t *frame, xlator_t *this); + unsigned int *lock_piggyback; + unsigned int *lock_acquired; - int (*done) (call_frame_t *frame, xlator_t *this); + int flags; + uint64_t up_count; /* number of CHILD_UPs this fd has seen */ + uint64_t down_count; /* number of CHILD_DOWNs this fd has seen */ - int (*resume) (call_frame_t *frame, xlator_t *this); + int32_t last_tried; - int (*unwind) (call_frame_t *frame, xlator_t *this); - } transaction; + int hit, miss; + gf_boolean_t failed_over; + struct list_head entries; /* needed for readdir failover */ - afr_self_heal_t self_heal; -} afr_local_t; + unsigned char *locked_on; /* which subvolumes locks have been successful */ + /* used for delayed-post-op optimization */ + pthread_mutex_t delay_lock; + gf_timer_t *delay_timer; + call_frame_t *delay_frame; + int call_child; -typedef struct { - unsigned char pre_op_done; - unsigned char *child_failed; + /* set if any write on this fd was a non stable write + (i.e, without O_SYNC or O_DSYNC) + */ + gf_boolean_t witnessed_unstable_write; + + /* list of frames currently in progress */ + struct list_head eager_locked; } afr_fd_ctx_t; /* try alloc and if it fails, goto label */ -#define ALLOC_OR_GOTO(var, type, label) do { \ - var = CALLOC (sizeof (type), 1); \ - if (!var) { \ - gf_log (this->name, GF_LOG_ERROR, \ - "out of memory :("); \ - op_errno = ENOMEM; \ - goto label; \ - } \ - } while (0); +#define AFR_LOCAL_ALLOC_OR_GOTO(var, label) do { \ + var = mem_get0 (THIS->local_pool); \ + if (!var) { \ + gf_log (this->name, GF_LOG_ERROR, \ + "out of memory :("); \ + op_errno = ENOMEM; \ + goto label; \ + } \ + } while (0); /* did a call fail due to a child failing? */ -#define child_went_down(op_ret, op_errno) (((op_ret) < 0) && \ - ((op_errno == ENOTCONN) || \ - (op_errno == EBADFD))) +#define child_went_down(op_ret, op_errno) (((op_ret) < 0) && \ + ((op_errno == ENOTCONN) || \ + (op_errno == EBADFD))) #define afr_fop_failed(op_ret, op_errno) ((op_ret) == -1) /* have we tried all children? */ #define all_tried(i, count) ((i) == (count) - 1) +int32_t +afr_set_dict_gfid (dict_t *dict, uuid_t gfid); + int -afr_fd_ctx_set (xlator_t *this, fd_t *fd); +pump_command_reply (call_frame_t *frame, xlator_t *this); + +int32_t +afr_notify (xlator_t *this, int32_t event, void *data, void *data2); -uint64_t -afr_read_child (xlator_t *this, inode_t *inode); +int +afr_init_entry_lockee (afr_entry_lockee_t *lockee, afr_local_t *local, + loc_t *loc, char *basename, int child_count); void -afr_set_read_child (xlator_t *this, inode_t *inode, int32_t read_child); +afr_entry_lockee_cleanup (afr_internal_lock_t *int_lock); + +int +afr_attempt_lock_recovery (xlator_t *this, int32_t child_index); + +int +afr_save_locked_fd (xlator_t *this, fd_t *fd); + +int +afr_mark_locked_nodes (xlator_t *this, fd_t *fd, + unsigned char *locked_nodes); void -afr_build_parent_loc (loc_t *parent, loc_t *child); +afr_set_lk_owner (call_frame_t *frame, xlator_t *this, void *lk_owner); int -afr_up_children_count (int child_count, unsigned char *child_up); +afr_set_lock_number (call_frame_t *frame, xlator_t *this); + + +loc_t * +lower_path (loc_t *l1, const char *b1, loc_t *l2, const char *b2); + +int32_t +afr_unlock (call_frame_t *frame, xlator_t *this); int -afr_locked_nodes_count (unsigned char *locked_nodes, int child_count); +afr_nonblocking_entrylk (call_frame_t *frame, xlator_t *this); + +int +afr_nonblocking_inodelk (call_frame_t *frame, xlator_t *this); + +int +afr_blocking_lock (call_frame_t *frame, xlator_t *this); + +int +afr_internal_lock_finish (call_frame_t *frame, xlator_t *this); + +int +afr_lk_transfer_datalock (call_frame_t *dst, call_frame_t *src, char *dom, + unsigned int child_count); + +int pump_start (call_frame_t *frame, xlator_t *this); + +int +__afr_fd_ctx_set (xlator_t *this, fd_t *fd); + +int +afr_fd_ctx_set (xlator_t *this, fd_t *fd); + +int32_t +afr_inode_get_read_ctx (xlator_t *this, inode_t *inode, int32_t *fresh_children); + +void +afr_inode_set_read_ctx (xlator_t *this, inode_t *inode, int32_t read_child, + int32_t *fresh_children); int -afr_first_up_child (afr_private_t *priv); +afr_build_parent_loc (loc_t *parent, loc_t *child, int32_t *op_errno); + +unsigned int +afr_up_children_count (unsigned char *child_up, unsigned int child_count); + +unsigned int +afr_locked_children_count (unsigned char *children, unsigned int child_count); -ino64_t -afr_itransform (ino64_t ino, int child_count, int child_index); +unsigned int +afr_pre_op_done_children_count (unsigned char *pre_op, + unsigned int child_count); + +gf_boolean_t +afr_is_fresh_lookup (loc_t *loc, xlator_t *this); + +void +afr_update_loc_gfids (loc_t *loc, struct iatt *buf, struct iatt *postparent); int -afr_deitransform (ino64_t ino, int child_count); +afr_locked_nodes_count (unsigned char *locked_nodes, int child_count); void afr_local_cleanup (afr_local_t *local, xlator_t *this); @@ -486,101 +937,276 @@ afr_local_cleanup (afr_local_t *local, xlator_t *this); int afr_frame_return (call_frame_t *frame); -#define AFR_STACK_UNWIND(frame, params ...) \ - do { \ - afr_local_t *__local = NULL; \ - xlator_t *__this = NULL; \ - __local = frame->local; \ - __this = frame->this; \ - frame->local = NULL; \ - STACK_UNWIND (frame, params); \ - afr_local_cleanup (__local, __this); \ - free (__local); \ -} while (0); - -#define AFR_STACK_DESTROY(frame) \ - do { \ - afr_local_t *__local = NULL; \ - xlator_t *__this = NULL; \ - __local = frame->local; \ - __this = frame->this; \ - frame->local = NULL; \ - STACK_DESTROY (frame->root); \ - afr_local_cleanup (__local, __this); \ - free (__local); \ -} while (0); +gf_boolean_t +afr_is_split_brain (xlator_t *this, inode_t *inode); + +void +afr_set_split_brain (xlator_t *this, inode_t *inode, afr_spb_state_t mdata_spb, + afr_spb_state_t data_spb); + +int +afr_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags, + fd_t *fd, dict_t *xdata); + +void +afr_set_opendir_done (xlator_t *this, inode_t *inode); + +gf_boolean_t +afr_is_opendir_done (xlator_t *this, inode_t *inode); + +void +afr_local_transaction_cleanup (afr_local_t *local, xlator_t *this); + +int +afr_cleanup_fd_ctx (xlator_t *this, fd_t *fd); +int +afr_launch_openfd_self_heal (call_frame_t *frame, xlator_t *this, fd_t *fd); + +#define AFR_STACK_UNWIND(fop, frame, params ...) \ + do { \ + afr_local_t *__local = NULL; \ + xlator_t *__this = NULL; \ + if (frame) { \ + __local = frame->local; \ + __this = frame->this; \ + frame->local = NULL; \ + } \ + STACK_UNWIND_STRICT (fop, frame, params); \ + if (__local) { \ + afr_local_cleanup (__local, __this); \ + mem_put (__local); \ + } \ + } while (0) + +#define AFR_STACK_DESTROY(frame) \ + do { \ + afr_local_t *__local = NULL; \ + xlator_t *__this = NULL; \ + __local = frame->local; \ + __this = frame->this; \ + frame->local = NULL; \ + STACK_DESTROY (frame->root); \ + if (__local) { \ + afr_local_cleanup (__local, __this); \ + mem_put (__local); \ + } \ + } while (0); + +#define AFR_NUM_CHANGE_LOGS 3 /*data + metadata + entry*/ /* allocate and return a string that is the basename of argument */ -static inline char * -AFR_BASENAME (const char *str) +static inline char * +AFR_BASENAME (const char *str) { - char *__tmp_str = NULL; - char *__basename_str = NULL; - __tmp_str = strdup (str); - __basename_str = strdup (basename (__tmp_str)); - FREE (__tmp_str); - return __basename_str; + char *__tmp_str = NULL; + char *__basename_str = NULL; + __tmp_str = gf_strdup (str); + __basename_str = gf_strdup (basename (__tmp_str)); + GF_FREE (__tmp_str); + return __basename_str; } -/* initialize local_t */ -static inline int -AFR_LOCAL_INIT (afr_local_t *local, afr_private_t *priv) -{ - local->child_up = CALLOC (sizeof (*local->child_up), - priv->child_count); - if (!local->child_up) { - return -ENOMEM; - } +int +afr_transaction_local_init (afr_local_t *local, xlator_t *this); - memcpy (local->child_up, priv->child_up, - sizeof (*local->child_up) * priv->child_count); +int32_t +afr_marker_getxattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *name,afr_local_t *local, afr_private_t *priv ); +int32_t * +afr_children_create (int32_t child_count); - local->call_count = afr_up_children_count (priv->child_count, local->child_up); - if (local->call_count == 0) - return -ENOTCONN; +int +afr_local_init (afr_local_t *local, afr_private_t *priv, int32_t *op_errno); - local->transaction.erase_pending = 1; +int +afr_internal_lock_init (afr_internal_lock_t *lk, size_t child_count, + transaction_lk_type_t lk_type); - local->op_ret = -1; - local->op_errno = EUCLEAN; +int +afr_first_up_child (unsigned char *child_up, size_t child_count); - return 0; -} +int +afr_select_read_child_from_policy (int32_t *fresh_children, int32_t child_count, + int32_t prev_read_child, + int32_t config_read_child, int32_t *sources, + unsigned int hmode, uuid_t gfid); +void +afr_set_read_ctx_from_policy (xlator_t *this, inode_t *inode, + int32_t *fresh_children, int32_t prev_read_child, + int32_t config_read_child, uuid_t gfid); + +int32_t +afr_get_call_child (xlator_t *this, unsigned char *child_up, int32_t read_child, + int32_t *fresh_children, + int32_t *call_child, int32_t *last_index); + +int32_t +afr_next_call_child (int32_t *fresh_children, unsigned char *child_up, + size_t child_count, int32_t *last_index, + int32_t read_child); +void +afr_get_fresh_children (int32_t *success_children, int32_t *sources, + int32_t *children, unsigned int child_count); +void +afr_children_add_child (int32_t *children, int32_t child, + int32_t child_count); +void +afr_children_rm_child (int32_t *children, int32_t child, + int32_t child_count); +void +afr_reset_children (int32_t *children, int32_t child_count); +int32_t +afr_most_important_error(int32_t old_errno, int32_t new_errno, + gf_boolean_t eio); +int +afr_errno_count (int32_t *children, int *child_errno, + unsigned int child_count, int32_t op_errno); +int +afr_get_children_count (int32_t *children, unsigned int child_count); +gf_boolean_t +afr_is_child_present (int32_t *success_children, int32_t child_count, + int32_t child); +void +afr_update_gfid_from_iatts (uuid_t uuid, struct iatt *bufs, + int32_t *success_children, + unsigned int child_count); +void +afr_reset_xattr (dict_t **xattr, unsigned int child_count); +gf_boolean_t +afr_conflicting_iattrs (struct iatt *bufs, int32_t *success_children, + unsigned int child_count, const char *path, + const char *xlator_name); +unsigned int +afr_gfid_missing_count (const char *xlator_name, int32_t *children, + struct iatt *bufs, unsigned int child_count, + const char *path); +void +afr_xattr_req_prepare (xlator_t *this, dict_t *xattr_req, const char *path); +void +afr_children_copy (int32_t *dst, int32_t *src, unsigned int child_count); +afr_transaction_type +afr_transaction_type_get (ia_type_t ia_type); +int32_t +afr_resultant_errno_get (int32_t *children, + int *child_errno, unsigned int child_count); +void +afr_inode_rm_stale_children (xlator_t *this, inode_t *inode, + int32_t *stale_children); +void +afr_launch_self_heal (call_frame_t *frame, xlator_t *this, inode_t *inode, + gf_boolean_t background, ia_type_t ia_type, char *reason, + void (*gfid_sh_success_cbk) (call_frame_t *sh_frame, + xlator_t *this), + int (*unwind) (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno, + int32_t sh_failed)); +void +afr_fix_open (xlator_t *this, fd_t *fd, size_t need_open_count, int *need_open); -static inline int -afr_transaction_local_init (afr_local_t *local, afr_private_t *priv) -{ - int i; - - local->child_errno = CALLOC (sizeof (*local->child_errno), - priv->child_count); - if (!local->child_errno) { - return -ENOMEM; - } - - local->pending = CALLOC (sizeof (*local->pending), - priv->child_count); - - if (!local->pending) { - return -ENOMEM; - } - - for (i = 0; i < priv->child_count; i++) { - local->pending[i] = CALLOC (sizeof (*local->pending[i]), - 3); /* data + metadata + entry */ - if (!local->pending[i]) - return -ENOMEM; - } - - local->transaction.locked_nodes = CALLOC (sizeof (*local->transaction.locked_nodes), - priv->child_count); +void +afr_open_fd_fix (fd_t *fd, xlator_t *this); +int +afr_set_elem_count_get (unsigned char *elems, int child_count); - local->transaction.child_errno = CALLOC (sizeof (*local->transaction.child_errno), - priv->child_count); +afr_fd_ctx_t * +afr_fd_ctx_get (fd_t *fd, xlator_t *this); - return 0; -} +gf_boolean_t +afr_open_only_data_self_heal (char *data_self_heal); + +gf_boolean_t +afr_data_self_heal_enabled (char *data_self_heal); + +void +afr_set_low_priority (call_frame_t *frame); +int +afr_child_fd_ctx_set (xlator_t *this, fd_t *fd, int32_t child, + int flags); + +gf_boolean_t +afr_have_quorum (char *logname, afr_private_t *priv); + +void +afr_matrix_cleanup (int32_t **pending, unsigned int m); + +int32_t** +afr_matrix_create (unsigned int m, unsigned int n); + +gf_boolean_t +afr_is_errno_set (int *child_errno, int child); + +gf_boolean_t +afr_is_errno_unset (int *child_errno, int child); + +gf_boolean_t +afr_is_fd_fixable (fd_t *fd); + +void +afr_prepare_new_entry_pending_matrix (int32_t **pending, + gf_boolean_t (*is_pending) (int *, int), + int *ctx, struct iatt *buf, + unsigned int child_count); +void +afr_xattr_array_destroy (dict_t **xattr, unsigned int child_count); +/* + * Special value indicating we should use the "auto" quorum method instead of + * a fixed value (including zero to turn off quorum enforcement). + */ +#define AFR_QUORUM_AUTO INT_MAX + +/* + * Having this as a macro will make debugging a bit weirder, but does reduce + * the probability of functions handling this check inconsistently. + */ +#define QUORUM_CHECK(_func,_label) do { \ + if (priv->quorum_count && !afr_have_quorum(this->name,priv)) { \ + gf_log(this->name,GF_LOG_WARNING, \ + "failing "#_func" due to lack of quorum"); \ + op_errno = EROFS; \ + goto _label; \ + } \ +} while (0); + + +#define AFR_SBRAIN_MSG "Failed on %s as split-brain is seen. Returning EIO." + +#define AFR_SBRAIN_CHECK_FD(fd, label) do { \ + if (fd->inode && afr_is_split_brain (this, fd->inode)) { \ + op_errno = EIO; \ + gf_log (this->name, GF_LOG_WARNING, \ + AFR_SBRAIN_MSG ,uuid_utoa (fd->inode->gfid)); \ + goto label; \ + } \ +} while (0) + +#define AFR_SBRAIN_CHECK_LOC(loc, label) do { \ + if (loc->inode && afr_is_split_brain (this, loc->inode)) { \ + op_errno = EIO; \ + loc_path (loc, NULL); \ + gf_log (this->name, GF_LOG_WARNING, \ + AFR_SBRAIN_MSG , loc->path); \ + goto label; \ + } \ +} while (0) + +int +afr_fd_report_unstable_write (xlator_t *this, fd_t *fd); + +gf_boolean_t +afr_fd_has_witnessed_unstable_write (xlator_t *this, fd_t *fd); + +void +afr_delayed_changelog_wake_resume (xlator_t *this, fd_t *fd, call_stub_t *stub); + +int +afr_inodelk_init (afr_inodelk_t *lk, char *dom, size_t child_count); + +void +afr_handle_open_fd_count (call_frame_t *frame, xlator_t *this); + +afr_inode_ctx_t* +afr_inode_ctx_get (inode_t *inode, xlator_t *this); #endif /* __AFR_H__ */ diff --git a/xlators/cluster/afr/src/pump.c b/xlators/cluster/afr/src/pump.c new file mode 100644 index 000000000..a7f72fb30 --- /dev/null +++ b/xlators/cluster/afr/src/pump.c @@ -0,0 +1,2641 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#include <unistd.h> +#include <sys/time.h> +#include <stdlib.h> +#include <fnmatch.h> + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "afr-common.c" +#include "defaults.c" +#include "glusterfs.h" + +static uint64_t pump_pid = 0; +static inline void +pump_fill_loc_info (loc_t *loc, struct iatt *iatt, struct iatt *parent) +{ + afr_update_loc_gfids (loc, iatt, parent); + uuid_copy (loc->inode->gfid, iatt->ia_gfid); +} + +static int +pump_mark_start_pending (xlator_t *this) +{ + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + + priv = this->private; + pump_priv = priv->pump_private; + + pump_priv->pump_start_pending = 1; + + return 0; +} + +static int +is_pump_start_pending (xlator_t *this) +{ + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + + priv = this->private; + pump_priv = priv->pump_private; + + return (pump_priv->pump_start_pending); +} + +static int +pump_remove_start_pending (xlator_t *this) +{ + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + + priv = this->private; + pump_priv = priv->pump_private; + + pump_priv->pump_start_pending = 0; + + return 0; +} + +static pump_state_t +pump_get_state () +{ + xlator_t *this = NULL; + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + + pump_state_t ret; + + this = THIS; + priv = this->private; + pump_priv = priv->pump_private; + + LOCK (&pump_priv->pump_state_lock); + { + ret = pump_priv->pump_state; + } + UNLOCK (&pump_priv->pump_state_lock); + + return ret; +} + +int +pump_change_state (xlator_t *this, pump_state_t state) +{ + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + + pump_state_t state_old; + pump_state_t state_new; + + + priv = this->private; + pump_priv = priv->pump_private; + + GF_ASSERT (pump_priv); + + LOCK (&pump_priv->pump_state_lock); + { + state_old = pump_priv->pump_state; + state_new = state; + + pump_priv->pump_state = state; + + } + UNLOCK (&pump_priv->pump_state_lock); + + gf_log (this->name, GF_LOG_DEBUG, + "Pump changing state from %d to %d", + state_old, + state_new); + + return 0; +} + +static int +pump_set_resume_path (xlator_t *this, const char *path) +{ + int ret = 0; + + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + + priv = this->private; + pump_priv = priv->pump_private; + + GF_ASSERT (pump_priv); + + LOCK (&pump_priv->resume_path_lock); + { + strncpy (pump_priv->resume_path, path, strlen (path) + 1); + } + UNLOCK (&pump_priv->resume_path_lock); + + return ret; +} + +static int +pump_save_path (xlator_t *this, const char *path) +{ + afr_private_t *priv = NULL; + pump_state_t state; + dict_t *dict = NULL; + loc_t loc = {0}; + int dict_ret = 0; + int ret = -1; + + state = pump_get_state (); + if (state == PUMP_STATE_RESUME) + return 0; + + priv = this->private; + + GF_ASSERT (priv->root_inode); + + afr_build_root_loc (this, &loc); + + dict = dict_new (); + dict_ret = dict_set_str (dict, PUMP_PATH, (char *)path); + if (dict_ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to set the key %s", path, PUMP_PATH); + + ret = syncop_setxattr (PUMP_SOURCE_CHILD (this), &loc, dict, 0); + + if (ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "setxattr failed - could not save path=%s", path); + } else { + gf_log (this->name, GF_LOG_DEBUG, + "setxattr succeeded - saved path=%s", path); + } + + dict_unref (dict); + + loc_wipe (&loc); + return 0; +} + +static int +pump_check_and_update_status (xlator_t *this) +{ + pump_state_t state; + int ret = -1; + + state = pump_get_state (); + + switch (state) { + + case PUMP_STATE_RESUME: + case PUMP_STATE_RUNNING: + { + ret = 0; + break; + } + case PUMP_STATE_PAUSE: + { + ret = -1; + break; + } + case PUMP_STATE_ABORT: + { + pump_save_path (this, "/"); + ret = -1; + break; + } + default: + { + gf_log (this->name, GF_LOG_DEBUG, + "Unknown pump state"); + ret = -1; + break; + } + + } + + return ret; +} + +static const char * +pump_get_resume_path (xlator_t *this) +{ + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + + const char *resume_path = NULL; + + priv = this->private; + pump_priv = priv->pump_private; + + resume_path = pump_priv->resume_path; + + return resume_path; +} + +static int +pump_update_resume_state (xlator_t *this, const char *path) +{ + pump_state_t state; + const char *resume_path = NULL; + + state = pump_get_state (); + + if (state == PUMP_STATE_RESUME) { + resume_path = pump_get_resume_path (this); + if (strcmp (resume_path, "/") == 0) { + gf_log (this->name, GF_LOG_DEBUG, + "Reached the resume path (/). Proceeding to change state" + " to running"); + pump_change_state (this, PUMP_STATE_RUNNING); + } else if (strcmp (resume_path, path) == 0) { + gf_log (this->name, GF_LOG_DEBUG, + "Reached the resume path. Proceeding to change state" + " to running"); + pump_change_state (this, PUMP_STATE_RUNNING); + } else { + gf_log (this->name, GF_LOG_DEBUG, + "Not yet hit the resume path:res-path=%s,path=%s", + resume_path, path); + } + } + + return 0; +} + +static gf_boolean_t +is_pump_traversal_allowed (xlator_t *this, const char *path) +{ + pump_state_t state; + const char *resume_path = NULL; + gf_boolean_t ret = _gf_true; + + state = pump_get_state (); + + if (state == PUMP_STATE_RESUME) { + resume_path = pump_get_resume_path (this); + if (strstr (resume_path, path)) { + gf_log (this->name, GF_LOG_DEBUG, + "On the right path to resumption path"); + ret = _gf_true; + } else { + gf_log (this->name, GF_LOG_DEBUG, + "Not the right path to resuming=> ignoring traverse"); + ret = _gf_false; + } + } + + return ret; +} + +static int +pump_save_file_stats (xlator_t *this, const char *path) +{ + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + + priv = this->private; + pump_priv = priv->pump_private; + + LOCK (&pump_priv->resume_path_lock); + { + pump_priv->number_files_pumped++; + + strncpy (pump_priv->current_file, path, + PATH_MAX); + } + UNLOCK (&pump_priv->resume_path_lock); + + return 0; +} + +static int +gf_pump_traverse_directory (loc_t *loc) +{ + xlator_t *this = NULL; + fd_t *fd = NULL; + off_t offset = 0; + loc_t entry_loc = {0}; + gf_dirent_t *entry = NULL; + gf_dirent_t *tmp = NULL; + gf_dirent_t entries; + struct iatt iatt = {0}; + struct iatt parent = {0}; + dict_t *xattr_rsp = NULL; + int ret = 0; + gf_boolean_t is_directory_empty = _gf_true; + gf_boolean_t free_entries = _gf_false; + + INIT_LIST_HEAD (&entries.list); + this = THIS; + + GF_ASSERT (loc->inode); + + fd = fd_create (loc->inode, pump_pid); + if (!fd) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to create fd for %s", loc->path); + goto out; + } + + ret = syncop_opendir (this, loc, fd); + if (ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "opendir failed on %s", loc->path); + goto out; + } + + gf_log (this->name, GF_LOG_TRACE, + "pump opendir on %s returned=%d", + loc->path, ret); + + while (syncop_readdirp (this, fd, 131072, offset, NULL, &entries)) { + free_entries = _gf_true; + + if (list_empty (&entries.list)) { + gf_log (this->name, GF_LOG_TRACE, + "no more entries in directory"); + goto out; + } + + list_for_each_entry_safe (entry, tmp, &entries.list, list) { + gf_log (this->name, GF_LOG_DEBUG, + "found readdir entry=%s", entry->d_name); + + offset = entry->d_off; + if (uuid_is_null (entry->d_stat.ia_gfid)) { + gf_log (this->name, GF_LOG_WARNING, "%s/%s: No " + "gfid present skipping", + loc->path, entry->d_name); + continue; + } + loc_wipe (&entry_loc); + ret = afr_build_child_loc (this, &entry_loc, loc, + entry->d_name); + if (ret) + goto out; + + if (!IS_ENTRY_CWD (entry->d_name) && + !IS_ENTRY_PARENT (entry->d_name)) { + + is_directory_empty = _gf_false; + gf_log (this->name, GF_LOG_DEBUG, + "lookup %s => %"PRId64, + entry_loc.path, + iatt.ia_ino); + + ret = syncop_lookup (this, &entry_loc, NULL, + &iatt, &xattr_rsp, &parent); + + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: lookup failed", + entry_loc.path); + continue; + } + pump_fill_loc_info (&entry_loc, &iatt, + &parent); + + pump_update_resume_state (this, entry_loc.path); + + pump_save_path (this, entry_loc.path); + pump_save_file_stats (this, entry_loc.path); + + ret = pump_check_and_update_status (this); + if (ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "Pump beginning to exit out"); + goto out; + } + + if (IA_ISDIR (iatt.ia_type)) { + if (is_pump_traversal_allowed (this, entry_loc.path)) { + gf_log (this->name, GF_LOG_TRACE, + "entering dir=%s", + entry->d_name); + gf_pump_traverse_directory (&entry_loc); + } + } + } + } + + gf_dirent_free (&entries); + free_entries = _gf_false; + gf_log (this->name, GF_LOG_TRACE, + "offset incremented to %d", + (int32_t ) offset); + + } + + ret = syncop_close (fd); + if (ret < 0) + gf_log (this->name, GF_LOG_DEBUG, "closing the fd failed"); + + if (is_directory_empty && IS_ROOT_PATH (loc->path)) { + pump_change_state (this, PUMP_STATE_RUNNING); + gf_log (this->name, GF_LOG_INFO, "Empty source brick. " + "Nothing to be done."); + } + +out: + if (entry_loc.path) + loc_wipe (&entry_loc); + if (free_entries) + gf_dirent_free (&entries); + return 0; +} + +static int +pump_update_resume_path (xlator_t *this) +{ + const char *resume_path = NULL; + + resume_path = pump_get_resume_path (this); + + if (resume_path) { + gf_log (this->name, GF_LOG_DEBUG, + "Found a path to resume from: %s", + resume_path); + + }else { + gf_log (this->name, GF_LOG_DEBUG, + "Did not find a path=> setting to '/'"); + pump_set_resume_path (this, "/"); + } + + pump_change_state (this, PUMP_STATE_RESUME); + + return 0; +} + +static int32_t +pump_xattr_cleaner (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_private_t *priv = NULL; + loc_t loc = {0}; + int i = 0; + int ret = 0; + int source = 0; + int sink = 1; + + priv = this->private; + + afr_build_root_loc (this, &loc); + + ret = syncop_removexattr (priv->children[source], &loc, + PUMP_PATH); + + ret = syncop_removexattr (priv->children[sink], &loc, + PUMP_SINK_COMPLETE); + + for (i = 0; i < priv->child_count; i++) { + ret = syncop_removexattr (priv->children[i], &loc, + PUMP_SOURCE_COMPLETE); + if (ret) + gf_log (this->name, GF_LOG_DEBUG, "removexattr " + "failed with %s", strerror (errno)); + } + + loc_wipe (&loc); + return pump_command_reply (frame, this); +} + +static int +pump_complete_migration (xlator_t *this) +{ + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + dict_t *dict = NULL; + pump_state_t state; + loc_t loc = {0}; + int dict_ret = 0; + int ret = -1; + + priv = this->private; + pump_priv = priv->pump_private; + + GF_ASSERT (priv->root_inode); + + afr_build_root_loc (this, &loc); + + dict = dict_new (); + + state = pump_get_state (); + if (state == PUMP_STATE_RUNNING) { + gf_log (this->name, GF_LOG_DEBUG, + "Pump finished pumping"); + + pump_priv->pump_finished = _gf_true; + + dict_ret = dict_set_str (dict, PUMP_SOURCE_COMPLETE, "jargon"); + if (dict_ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to set the key %s", + loc.path, PUMP_SOURCE_COMPLETE); + + ret = syncop_setxattr (PUMP_SOURCE_CHILD (this), &loc, dict, 0); + if (ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "setxattr failed - while notifying source complete"); + } + dict_ret = dict_set_str (dict, PUMP_SINK_COMPLETE, "jargon"); + if (dict_ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to set the key %s", + loc.path, PUMP_SINK_COMPLETE); + + ret = syncop_setxattr (PUMP_SINK_CHILD (this), &loc, dict, 0); + if (ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "setxattr failed - while notifying sink complete"); + } + + pump_save_path (this, "/"); + + } else if (state == PUMP_STATE_ABORT) { + gf_log (this->name, GF_LOG_DEBUG, "Starting cleanup " + "of pump internal xattrs"); + call_resume (pump_priv->cleaner); + } + + loc_wipe (&loc); + return 0; +} + +static int +pump_lookup_sink (loc_t *loc) +{ + xlator_t *this = NULL; + struct iatt iatt, parent; + dict_t *xattr_rsp; + dict_t *xattr_req = NULL; + int ret = 0; + + this = THIS; + + xattr_req = dict_new (); + + ret = afr_set_root_gfid (xattr_req); + if (ret) + goto out; + + ret = syncop_lookup (PUMP_SINK_CHILD (this), loc, + xattr_req, &iatt, &xattr_rsp, &parent); + + if (ret) { + gf_log (this->name, GF_LOG_DEBUG, + "Lookup on sink child failed"); + goto out; + } + +out: + if (xattr_req) + dict_unref (xattr_req); + + return ret; +} + +static int +pump_task (void *data) +{ + xlator_t *this = NULL; + afr_private_t *priv = NULL; + + + loc_t loc = {0}; + struct iatt iatt, parent; + dict_t *xattr_rsp = NULL; + dict_t *xattr_req = NULL; + + int ret = -1; + + this = THIS; + priv = this->private; + + GF_ASSERT (priv->root_inode); + + afr_build_root_loc (this, &loc); + xattr_req = dict_new (); + if (!xattr_req) { + gf_log (this->name, GF_LOG_DEBUG, + "Out of memory"); + ret = -1; + goto out; + } + + afr_set_root_gfid (xattr_req); + ret = syncop_lookup (this, &loc, xattr_req, + &iatt, &xattr_rsp, &parent); + + gf_log (this->name, GF_LOG_TRACE, + "lookup: path=%s gfid=%s", + loc.path, uuid_utoa (loc.inode->gfid)); + + ret = pump_check_and_update_status (this); + if (ret < 0) { + goto out; + } + + pump_update_resume_path (this); + + afr_set_root_gfid (xattr_req); + ret = pump_lookup_sink (&loc); + if (ret) { + pump_update_resume_path (this); + goto out; + } + + gf_pump_traverse_directory (&loc); + + pump_complete_migration (this); +out: + if (xattr_req) + dict_unref (xattr_req); + + loc_wipe (&loc); + return 0; +} + + +static int +pump_task_completion (int ret, call_frame_t *sync_frame, void *data) +{ + xlator_t *this = NULL; + afr_private_t *priv = NULL; + + this = THIS; + + priv = this->private; + + inode_unref (priv->root_inode); + STACK_DESTROY (sync_frame->root); + + gf_log (this->name, GF_LOG_DEBUG, + "Pump xlator exiting"); + return 0; +} + +int +pump_start (call_frame_t *pump_frame, xlator_t *this) +{ + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + + int ret = -1; + + priv = this->private; + pump_priv = priv->pump_private; + + afr_set_lk_owner (pump_frame, this, pump_frame->root); + pump_pid = (uint64_t) (unsigned long)pump_frame->root; + + ret = synctask_new (pump_priv->env, pump_task, + pump_task_completion, + pump_frame, NULL); + if (ret == -1) { + gf_log (this->name, GF_LOG_ERROR, + "starting pump failed"); + pump_change_state (this, PUMP_STATE_ABORT); + goto out; + } + + gf_log (this->name, GF_LOG_DEBUG, + "setting pump as started lk_owner: %s %"PRIu64, + lkowner_utoa (&pump_frame->root->lk_owner), pump_pid); + + priv->use_afr_in_pump = 1; +out: + return ret; +} + +static int +pump_start_synctask (xlator_t *this) +{ + call_frame_t *frame = NULL; + int ret = 0; + + frame = create_frame (this, this->ctx->pool); + if (!frame) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory"); + ret = -1; + goto out; + } + + pump_change_state (this, PUMP_STATE_RUNNING); + + ret = pump_start (frame, this); + +out: + return ret; +} + +int32_t +pump_cmd_start_setxattr_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, dict_t *xdata) + +{ + call_frame_t *prev = NULL; + afr_local_t *local = NULL; + int ret = 0; + + local = frame->local; + + if (op_ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "Could not initiate destination " + "brick connect"); + ret = op_ret; + goto out; + } + + gf_log (this->name, GF_LOG_DEBUG, + "Successfully initiated destination " + "brick connect"); + + pump_mark_start_pending (this); + + /* send the PARENT_UP as pump is ready now */ + prev = cookie; + if (prev && prev->this) + prev->this->notify (prev->this, GF_EVENT_PARENT_UP, this); + +out: + local->op_ret = ret; + pump_command_reply (frame, this); + + return 0; +} + +static int +pump_initiate_sink_connect (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + dict_t *dict = NULL; + data_t *data = NULL; + char *clnt_cmd = NULL; + loc_t loc = {0}; + + int ret = 0; + + priv = this->private; + local = frame->local; + + GF_ASSERT (priv->root_inode); + + afr_build_root_loc (this, &loc); + + data = data_ref (dict_get (local->dict, RB_PUMP_CMD_START)); + if (!data) { + ret = -1; + gf_log (this->name, GF_LOG_ERROR, + "Could not get destination brick value"); + goto out; + } + + dict = dict_new (); + if (!dict) { + ret = -1; + goto out; + } + + clnt_cmd = GF_CALLOC (1, data->len+1, gf_common_mt_char); + if (!clnt_cmd) { + ret = -1; + goto out; + } + + memcpy (clnt_cmd, data->data, data->len); + clnt_cmd[data->len] = '\0'; + gf_log (this->name, GF_LOG_DEBUG, "Got destination brick %s\n", + clnt_cmd); + + ret = dict_set_dynstr (dict, CLIENT_CMD_CONNECT, clnt_cmd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "Could not inititiate destination brick " + "connect"); + goto out; + } + + STACK_WIND (frame, + pump_cmd_start_setxattr_cbk, + PUMP_SINK_CHILD(this), + PUMP_SINK_CHILD(this)->fops->setxattr, + &loc, + dict, + 0, NULL); + + ret = 0; + +out: + if (dict) + dict_unref (dict); + + if (data) + data_unref (data); + + if (ret && clnt_cmd) + GF_FREE (clnt_cmd); + + loc_wipe (&loc); + return ret; +} + +static int +is_pump_aborted (xlator_t *this) +{ + pump_state_t state; + + state = pump_get_state (); + + return ((state == PUMP_STATE_ABORT)); +} + +int32_t +pump_cmd_start_getxattr_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + dict_t *dict, dict_t *xdata) +{ + afr_local_t *local = NULL; + char *path = NULL; + + pump_state_t state; + int ret = 0; + int need_unwind = 0; + int dict_ret = -1; + + local = frame->local; + + if (op_ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "getxattr failed - changing pump " + "state to RUNNING with '/'"); + path = "/"; + ret = op_ret; + } else { + gf_log (this->name, GF_LOG_TRACE, + "getxattr succeeded"); + + dict_ret = dict_get_str (dict, PUMP_PATH, &path); + if (dict_ret < 0) + path = "/"; + } + + state = pump_get_state (); + if ((state == PUMP_STATE_RUNNING) || + (state == PUMP_STATE_RESUME)) { + gf_log (this->name, GF_LOG_ERROR, + "Pump is already started"); + ret = -1; + goto out; + } + + pump_set_resume_path (this, path); + + if (is_pump_aborted (this)) + /* We're re-starting pump afresh */ + ret = pump_initiate_sink_connect (frame, this); + else { + /* We're re-starting pump from a previous + pause */ + gf_log (this->name, GF_LOG_DEBUG, + "about to start synctask"); + ret = pump_start_synctask (this); + need_unwind = 1; + } + +out: + if ((ret < 0) || (need_unwind == 1)) { + local->op_ret = ret; + pump_command_reply (frame, this); + } + return 0; +} + +int +pump_execute_status (call_frame_t *frame, xlator_t *this) +{ + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + + uint64_t number_files = 0; + + char filename[PATH_MAX]; + char summary[PATH_MAX+256]; + char *dict_str = NULL; + + int32_t op_ret = 0; + int32_t op_errno = 0; + + dict_t *dict = NULL; + int ret = -1; + + priv = this->private; + pump_priv = priv->pump_private; + + LOCK (&pump_priv->resume_path_lock); + { + number_files = pump_priv->number_files_pumped; + strncpy (filename, pump_priv->current_file, PATH_MAX); + } + UNLOCK (&pump_priv->resume_path_lock); + + dict_str = GF_CALLOC (1, PATH_MAX + 256, gf_afr_mt_char); + if (!dict_str) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory"); + op_ret = -1; + op_errno = ENOMEM; + goto out; + } + + if (pump_priv->pump_finished) { + snprintf (summary, PATH_MAX+256, + "no_of_files=%"PRIu64, number_files); + } else { + snprintf (summary, PATH_MAX+256, + "no_of_files=%"PRIu64":current_file=%s", + number_files, filename); + } + snprintf (dict_str, PATH_MAX+256, "status=%d:%s", + (pump_priv->pump_finished)?1:0, summary); + + dict = dict_new (); + + ret = dict_set_dynstr (dict, RB_PUMP_CMD_STATUS, dict_str); + if (ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "dict_set_dynstr returned negative value"); + } else { + dict_str = NULL; + } + + op_ret = 0; + +out: + + AFR_STACK_UNWIND (getxattr, frame, op_ret, op_errno, dict, NULL); + + if (dict) + dict_unref (dict); + + GF_FREE (dict_str); + + return 0; +} + +int +pump_execute_pause (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + + local = frame->local; + + pump_change_state (this, PUMP_STATE_PAUSE); + + local->op_ret = 0; + pump_command_reply (frame, this); + + return 0; +} + +int +pump_execute_start (call_frame_t *frame, xlator_t *this) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + + int ret = 0; + loc_t loc = {0}; + + priv = this->private; + local = frame->local; + + if (!priv->root_inode) { + gf_log (this->name, GF_LOG_ERROR, + "Pump xlator cannot be started without an initial " + "lookup"); + ret = -1; + goto out; + } + + GF_ASSERT (priv->root_inode); + + afr_build_root_loc (this, &loc); + + STACK_WIND (frame, + pump_cmd_start_getxattr_cbk, + PUMP_SOURCE_CHILD(this), + PUMP_SOURCE_CHILD(this)->fops->getxattr, + &loc, + PUMP_PATH, NULL); + + ret = 0; + +out: + if (ret < 0) { + local->op_ret = ret; + pump_command_reply (frame, this); + } + + loc_wipe (&loc); + return 0; +} + +static int +pump_cleanup_helper (void *data) { + call_frame_t *frame = data; + + pump_xattr_cleaner (frame, 0, frame->this, 0, 0, NULL); + + return 0; +} + +static int +pump_cleanup_done (int ret, call_frame_t *sync_frame, void *data) +{ + STACK_DESTROY (sync_frame->root); + + return 0; +} + +int +pump_execute_commit (call_frame_t *frame, xlator_t *this) +{ + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + afr_local_t *local = NULL; + call_frame_t *sync_frame = NULL; + int ret = 0; + + priv = this->private; + pump_priv = priv->pump_private; + local = frame->local; + + local->op_ret = 0; + if (pump_priv->pump_finished) { + pump_change_state (this, PUMP_STATE_COMMIT); + sync_frame = create_frame (this, this->ctx->pool); + ret = synctask_new (pump_priv->env, pump_cleanup_helper, + pump_cleanup_done, sync_frame, frame); + if (ret) { + gf_log (this->name, GF_LOG_DEBUG, "Couldn't create " + "synctask for cleaning up xattrs."); + } + + } else { + gf_log (this->name, GF_LOG_ERROR, "Commit can't proceed. " + "Migration in progress"); + local->op_ret = -1; + local->op_errno = EINPROGRESS; + pump_command_reply (frame, this); + } + + return 0; +} +int +pump_execute_abort (call_frame_t *frame, xlator_t *this) +{ + afr_private_t *priv = NULL; + pump_private_t *pump_priv = NULL; + afr_local_t *local = NULL; + call_frame_t *sync_frame = NULL; + int ret = 0; + + priv = this->private; + pump_priv = priv->pump_private; + local = frame->local; + + pump_change_state (this, PUMP_STATE_ABORT); + + LOCK (&pump_priv->resume_path_lock); + { + pump_priv->number_files_pumped = 0; + pump_priv->current_file[0] = '\0'; + } + UNLOCK (&pump_priv->resume_path_lock); + + local->op_ret = 0; + if (pump_priv->pump_finished) { + sync_frame = create_frame (this, this->ctx->pool); + ret = synctask_new (pump_priv->env, pump_cleanup_helper, + pump_cleanup_done, sync_frame, frame); + if (ret) { + gf_log (this->name, GF_LOG_DEBUG, "Couldn't create " + "synctask for cleaning up xattrs."); + } + + } else { + pump_priv->cleaner = fop_setxattr_cbk_stub (frame, + pump_xattr_cleaner, + 0, 0, NULL); + } + + return 0; +} + +gf_boolean_t +pump_command_status (xlator_t *this, dict_t *dict) +{ + char *cmd = NULL; + int dict_ret = -1; + int ret = _gf_true; + + dict_ret = dict_get_str (dict, RB_PUMP_CMD_STATUS, &cmd); + if (dict_ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "Not a pump status command"); + ret = _gf_false; + goto out; + } + + gf_log (this->name, GF_LOG_DEBUG, + "Hit a pump command - status"); + ret = _gf_true; + +out: + return ret; + +} + +gf_boolean_t +pump_command_pause (xlator_t *this, dict_t *dict) +{ + char *cmd = NULL; + int dict_ret = -1; + int ret = _gf_true; + + dict_ret = dict_get_str (dict, RB_PUMP_CMD_PAUSE, &cmd); + if (dict_ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "Not a pump pause command"); + ret = _gf_false; + goto out; + } + + gf_log (this->name, GF_LOG_DEBUG, + "Hit a pump command - pause"); + ret = _gf_true; + +out: + return ret; + +} + +gf_boolean_t +pump_command_commit (xlator_t *this, dict_t *dict) +{ + char *cmd = NULL; + int dict_ret = -1; + int ret = _gf_true; + + dict_ret = dict_get_str (dict, RB_PUMP_CMD_COMMIT, &cmd); + if (dict_ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "Not a pump commit command"); + ret = _gf_false; + goto out; + } + + gf_log (this->name, GF_LOG_DEBUG, + "Hit a pump command - commit"); + ret = _gf_true; + +out: + return ret; + +} + +gf_boolean_t +pump_command_abort (xlator_t *this, dict_t *dict) +{ + char *cmd = NULL; + int dict_ret = -1; + int ret = _gf_true; + + dict_ret = dict_get_str (dict, RB_PUMP_CMD_ABORT, &cmd); + if (dict_ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "Not a pump abort command"); + ret = _gf_false; + goto out; + } + + gf_log (this->name, GF_LOG_DEBUG, + "Hit a pump command - abort"); + ret = _gf_true; + +out: + return ret; + +} + +gf_boolean_t +pump_command_start (xlator_t *this, dict_t *dict) +{ + char *cmd = NULL; + int dict_ret = -1; + int ret = _gf_true; + + dict_ret = dict_get_str (dict, RB_PUMP_CMD_START, &cmd); + if (dict_ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "Not a pump start command"); + ret = _gf_false; + goto out; + } + + gf_log (this->name, GF_LOG_DEBUG, + "Hit a pump command - start"); + ret = _gf_true; + +out: + return ret; + +} + +struct _xattr_key { + char *key; + struct list_head list; +}; + +static int +__gather_xattr_keys (dict_t *dict, char *key, data_t *value, + void *data) +{ + struct list_head * list = data; + struct _xattr_key * xkey = NULL; + + if (!strncmp (key, AFR_XATTR_PREFIX, + strlen (AFR_XATTR_PREFIX))) { + + xkey = GF_CALLOC (1, sizeof (*xkey), gf_afr_mt_xattr_key); + if (!xkey) + return -1; + + xkey->key = key; + INIT_LIST_HEAD (&xkey->list); + + list_add_tail (&xkey->list, list); + } + return 0; +} + +static void +__filter_xattrs (dict_t *dict) +{ + struct list_head keys; + + struct _xattr_key *key; + struct _xattr_key *tmp; + + INIT_LIST_HEAD (&keys); + + dict_foreach (dict, __gather_xattr_keys, + (void *) &keys); + + list_for_each_entry_safe (key, tmp, &keys, list) { + dict_del (dict, key->key); + + list_del_init (&key->list); + + GF_FREE (key); + } +} + +int32_t +pump_getxattr_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + xlator_t **children = NULL; + int unwind = 1; + int32_t *last_index = NULL; + int32_t next_call_child = -1; + int32_t read_child = -1; + int32_t *fresh_children = NULL; + + + priv = this->private; + children = priv->children; + + local = frame->local; + + read_child = (long) cookie; + + if (op_ret == -1) { + last_index = &local->cont.getxattr.last_index; + fresh_children = local->fresh_children; + next_call_child = afr_next_call_child (fresh_children, + local->child_up, + priv->child_count, + last_index, read_child); + if (next_call_child < 0) + goto out; + + unwind = 0; + STACK_WIND_COOKIE (frame, pump_getxattr_cbk, + (void *) (long) read_child, + children[next_call_child], + children[next_call_child]->fops->getxattr, + &local->loc, + local->cont.getxattr.name, NULL); + } + +out: + if (unwind) { + if (op_ret >= 0 && dict) + __filter_xattrs (dict); + + AFR_STACK_UNWIND (getxattr, frame, op_ret, op_errno, dict, NULL); + } + + return 0; +} + +int32_t +pump_getxattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *name, dict_t *xdata) +{ + afr_private_t * priv = NULL; + xlator_t ** children = NULL; + int call_child = 0; + afr_local_t *local = NULL; + int32_t ret = -1; + int32_t op_errno = 0; + uint64_t read_child = 0; + + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + VALIDATE_OR_GOTO (priv->children, out); + + children = priv->children; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, default_getxattr_cbk, + FIRST_CHILD (this), + (FIRST_CHILD (this))->fops->getxattr, + loc, name, xdata); + return 0; + } + + + AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out); + local = frame->local; + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) + goto out; + + if (name) { + if (!strncmp (name, AFR_XATTR_PREFIX, + strlen (AFR_XATTR_PREFIX))) { + + op_errno = ENODATA; + goto out; + } + + if (!strcmp (name, RB_PUMP_CMD_STATUS)) { + gf_log (this->name, GF_LOG_DEBUG, + "Hit pump command - status"); + pump_execute_status (frame, this); + ret = 0; + goto out; + } + } + + local->fresh_children = GF_CALLOC (priv->child_count, + sizeof (*local->fresh_children), + gf_afr_mt_int32_t); + if (!local->fresh_children) { + ret = -1; + op_errno = ENOMEM; + goto out; + } + + read_child = afr_inode_get_read_ctx (this, loc->inode, local->fresh_children); + ret = afr_get_call_child (this, local->child_up, read_child, + local->fresh_children, + &call_child, + &local->cont.getxattr.last_index); + if (ret < 0) { + op_errno = -ret; + goto out; + } + loc_copy (&local->loc, loc); + if (name) + local->cont.getxattr.name = gf_strdup (name); + + STACK_WIND_COOKIE (frame, pump_getxattr_cbk, + (void *) (long) call_child, + children[call_child], children[call_child]->fops->getxattr, + loc, name, xdata); + + ret = 0; +out: + if (ret < 0) + AFR_STACK_UNWIND (getxattr, frame, -1, op_errno, NULL, NULL); + return 0; +} + +static int +afr_setxattr_unwind (call_frame_t *frame, xlator_t *this) +{ + afr_local_t * local = NULL; + call_frame_t *main_frame = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + if (local->transaction.main_frame) + main_frame = local->transaction.main_frame; + local->transaction.main_frame = NULL; + } + UNLOCK (&frame->lock); + + if (main_frame) { + AFR_STACK_UNWIND (setxattr, main_frame, + local->op_ret, local->op_errno, NULL); + } + return 0; +} + +static int +afr_setxattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + afr_local_t * local = NULL; + afr_private_t * priv = NULL; + + int call_count = -1; + int need_unwind = 0; + + local = frame->local; + priv = this->private; + + LOCK (&frame->lock); + { + if (op_ret != -1) { + if (local->success_count == 0) { + local->op_ret = op_ret; + } + local->success_count++; + + if (local->success_count == priv->child_count) { + need_unwind = 1; + } + } + + local->op_errno = op_errno; + } + UNLOCK (&frame->lock); + + if (need_unwind) + local->transaction.unwind (frame, this); + + call_count = afr_frame_return (frame); + + if (call_count == 0) { + local->transaction.resume (frame, this); + } + + return 0; +} + +static int +afr_setxattr_wind (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + + int call_count = -1; + int i = 0; + + local = frame->local; + priv = this->private; + + call_count = afr_up_children_count (local->child_up, priv->child_count); + + if (call_count == 0) { + local->transaction.resume (frame, this); + return 0; + } + + local->call_count = call_count; + + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + STACK_WIND_COOKIE (frame, afr_setxattr_wind_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->setxattr, + &local->loc, + local->cont.setxattr.dict, + local->cont.setxattr.flags, NULL); + + if (!--call_count) + break; + } + } + + return 0; +} + + +static int +afr_setxattr_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t * local = frame->local; + + local->transaction.unwind (frame, this); + + AFR_STACK_DESTROY (frame); + + return 0; +} + +int32_t +pump_setxattr_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, dict_t *xdata) +{ + AFR_STACK_UNWIND (setxattr, frame, op_ret, op_errno, xdata); + return 0; +} + +int +pump_command_reply (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + + local = frame->local; + + if (local->op_ret < 0) + gf_log (this->name, GF_LOG_INFO, + "Command failed"); + else + gf_log (this->name, GF_LOG_INFO, + "Command succeeded"); + + AFR_STACK_UNWIND (setxattr, + frame, + local->op_ret, + local->op_errno, NULL); + + return 0; +} + +int +pump_parse_command (call_frame_t *frame, xlator_t *this, + afr_local_t *local, dict_t *dict) +{ + + int ret = -1; + + if (pump_command_start (this, dict)) { + frame->local = local; + local->dict = dict_ref (dict); + ret = pump_execute_start (frame, this); + + } else if (pump_command_pause (this, dict)) { + frame->local = local; + local->dict = dict_ref (dict); + ret = pump_execute_pause (frame, this); + + } else if (pump_command_abort (this, dict)) { + frame->local = local; + local->dict = dict_ref (dict); + ret = pump_execute_abort (frame, this); + + } else if (pump_command_commit (this, dict)) { + frame->local = local; + local->dict = dict_ref (dict); + ret = pump_execute_commit (frame, this); + } + return ret; +} + +int +pump_setxattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, dict_t *dict, int32_t flags, dict_t *xdata) +{ + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + call_frame_t *transaction_frame = NULL; + int ret = -1; + int op_errno = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + + GF_IF_INTERNAL_XATTR_GOTO ("trusted.glusterfs.pump*", dict, + op_errno, out); + + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, default_setxattr_cbk, + FIRST_CHILD (this), + (FIRST_CHILD (this))->fops->setxattr, + loc, dict, flags, xdata); + return 0; + } + + + AFR_LOCAL_ALLOC_OR_GOTO (local, out); + + ret = afr_local_init (local, priv, &op_errno); + if (ret < 0) { + afr_local_cleanup (local, this); + goto out; + } + + ret = pump_parse_command (frame, this, + local, dict); + if (ret >= 0) { + ret = 0; + goto out; + } + + transaction_frame = copy_frame (frame); + if (!transaction_frame) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory."); + op_errno = ENOMEM; + ret = -1; + afr_local_cleanup (local, this); + goto out; + } + + transaction_frame->local = local; + + local->op_ret = -1; + + local->cont.setxattr.dict = dict_ref (dict); + local->cont.setxattr.flags = flags; + + local->transaction.fop = afr_setxattr_wind; + local->transaction.done = afr_setxattr_done; + local->transaction.unwind = afr_setxattr_unwind; + + loc_copy (&local->loc, loc); + + local->transaction.main_frame = frame; + local->transaction.start = LLONG_MAX - 1; + local->transaction.len = 0; + + afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION); + + ret = 0; +out: + if (ret < 0) { + if (transaction_frame) + AFR_STACK_DESTROY (transaction_frame); + AFR_STACK_UNWIND (setxattr, frame, -1, op_errno, NULL); + } + + return 0; +} + +/* Defaults */ +static int32_t +pump_lookup (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + dict_t *xattr_req) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_lookup_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->lookup, + loc, + xattr_req); + return 0; + } + + afr_lookup (frame, this, loc, xattr_req); + return 0; +} + + +static int32_t +pump_truncate (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + off_t offset, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_truncate_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->truncate, + loc, + offset, xdata); + return 0; + } + + afr_truncate (frame, this, loc, offset, xdata); + return 0; +} + + +static int32_t +pump_ftruncate (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + off_t offset, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_ftruncate_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->ftruncate, + fd, + offset, xdata); + return 0; + } + + afr_ftruncate (frame, this, fd, offset, xdata); + return 0; +} + + + + +int +pump_mknod (call_frame_t *frame, xlator_t *this, + loc_t *loc, mode_t mode, dev_t rdev, mode_t umask, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, default_mknod_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->mknod, + loc, mode, rdev, umask, xdata); + return 0; + } + afr_mknod (frame, this, loc, mode, rdev, umask, xdata); + return 0; + +} + + + +int +pump_mkdir (call_frame_t *frame, xlator_t *this, + loc_t *loc, mode_t mode, mode_t umask, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, default_mkdir_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->mkdir, + loc, mode, umask, xdata); + return 0; + } + afr_mkdir (frame, this, loc, mode, umask, xdata); + return 0; + +} + + +static int32_t +pump_unlink (call_frame_t *frame, + xlator_t *this, + loc_t *loc, int xflag, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_unlink_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->unlink, + loc, xflag, xdata); + return 0; + } + afr_unlink (frame, this, loc, xflag, xdata); + return 0; + +} + + +static int +pump_rmdir (call_frame_t *frame, xlator_t *this, + loc_t *loc, int flags, dict_t *xdata) +{ + afr_private_t *priv = NULL; + + priv = this->private; + + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, default_rmdir_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->rmdir, + loc, flags, xdata); + return 0; + } + + afr_rmdir (frame, this, loc, flags, xdata); + return 0; + +} + + + +int +pump_symlink (call_frame_t *frame, xlator_t *this, + const char *linkpath, loc_t *loc, mode_t umask, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, default_symlink_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->symlink, + linkpath, loc, umask, xdata); + return 0; + } + afr_symlink (frame, this, linkpath, loc, umask, xdata); + return 0; + +} + + +static int32_t +pump_rename (call_frame_t *frame, + xlator_t *this, + loc_t *oldloc, + loc_t *newloc, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_rename_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->rename, + oldloc, newloc, xdata); + return 0; + } + afr_rename (frame, this, oldloc, newloc, xdata); + return 0; + +} + + +static int32_t +pump_link (call_frame_t *frame, + xlator_t *this, + loc_t *oldloc, + loc_t *newloc, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_link_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->link, + oldloc, newloc, xdata); + return 0; + } + afr_link (frame, this, oldloc, newloc, xdata); + return 0; + +} + + +static int32_t +pump_create (call_frame_t *frame, xlator_t *this, + loc_t *loc, int32_t flags, mode_t mode, + mode_t umask, fd_t *fd, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, default_create_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->create, + loc, flags, mode, umask, fd, xdata); + return 0; + } + afr_create (frame, this, loc, flags, mode, umask, fd, xdata); + return 0; + +} + + +static int32_t +pump_open (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + int32_t flags, fd_t *fd, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_open_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->open, + loc, flags, fd, xdata); + return 0; + } + afr_open (frame, this, loc, flags, fd, xdata); + return 0; + +} + + +static int32_t +pump_writev (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + struct iovec *vector, + int32_t count, + off_t off, uint32_t flags, + struct iobref *iobref, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_writev_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->writev, + fd, + vector, + count, + off, flags, + iobref, xdata); + return 0; + } + + afr_writev (frame, this, fd, vector, count, off, flags, iobref, xdata); + return 0; +} + + +static int32_t +pump_flush (call_frame_t *frame, + xlator_t *this, + fd_t *fd, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_flush_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->flush, + fd, xdata); + return 0; + } + afr_flush (frame, this, fd, xdata); + return 0; + +} + + +static int32_t +pump_fsync (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + int32_t flags, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_fsync_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->fsync, + fd, + flags, xdata); + return 0; + } + afr_fsync (frame, this, fd, flags, xdata); + return 0; + +} + + +static int32_t +pump_opendir (call_frame_t *frame, + xlator_t *this, + loc_t *loc, fd_t *fd, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_opendir_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->opendir, + loc, fd, xdata); + return 0; + } + afr_opendir (frame, this, loc, fd, xdata); + return 0; + +} + + +static int32_t +pump_fsyncdir (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + int32_t flags, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_fsyncdir_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->fsyncdir, + fd, + flags, xdata); + return 0; + } + afr_fsyncdir (frame, this, fd, flags, xdata); + return 0; + +} + + +static int32_t +pump_xattrop (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + gf_xattrop_flags_t flags, + dict_t *dict, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_xattrop_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->xattrop, + loc, + flags, + dict, xdata); + return 0; + } + afr_xattrop (frame, this, loc, flags, dict, xdata); + return 0; + +} + +static int32_t +pump_fxattrop (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + gf_xattrop_flags_t flags, + dict_t *dict, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_fxattrop_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->fxattrop, + fd, + flags, + dict, xdata); + return 0; + } + afr_fxattrop (frame, this, fd, flags, dict, xdata); + return 0; + +} + + +static int32_t +pump_removexattr (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + const char *name, dict_t *xdata) +{ + afr_private_t *priv = NULL; + int op_errno = -1; + + VALIDATE_OR_GOTO (this, out); + + GF_IF_NATIVE_XATTR_GOTO ("trusted.glusterfs.pump*", + name, op_errno, out); + + op_errno = 0; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_removexattr_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->removexattr, + loc, + name, xdata); + return 0; + } + afr_removexattr (frame, this, loc, name, xdata); + + out: + if (op_errno) + AFR_STACK_UNWIND (removexattr, frame, -1, op_errno, NULL); + return 0; + +} + + + +static int32_t +pump_readdir (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + size_t size, + off_t off, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_readdir_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->readdir, + fd, size, off, xdata); + return 0; + } + afr_readdir (frame, this, fd, size, off, xdata); + return 0; + +} + + +static int32_t +pump_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd, + size_t size, off_t off, dict_t *dict) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_readdirp_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->readdirp, + fd, size, off, dict); + return 0; + } + afr_readdirp (frame, this, fd, size, off, dict); + return 0; + +} + + + +static int32_t +pump_releasedir (xlator_t *this, + fd_t *fd) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (priv->use_afr_in_pump) + afr_releasedir (this, fd); + return 0; + +} + +static int32_t +pump_release (xlator_t *this, + fd_t *fd) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (priv->use_afr_in_pump) + afr_release (this, fd); + return 0; + +} + +static int32_t +pump_forget (xlator_t *this, inode_t *inode) +{ + afr_private_t *priv = NULL; + + priv = this->private; + if (priv->use_afr_in_pump) + afr_forget (this, inode); + + return 0; +} + +static int32_t +pump_setattr (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + struct iatt *stbuf, + int32_t valid, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_setattr_cbk, + FIRST_CHILD (this), + FIRST_CHILD (this)->fops->setattr, + loc, stbuf, valid, xdata); + return 0; + } + afr_setattr (frame, this, loc, stbuf, valid, xdata); + return 0; + +} + + +static int32_t +pump_fsetattr (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + struct iatt *stbuf, + int32_t valid, dict_t *xdata) +{ + afr_private_t *priv = NULL; + priv = this->private; + if (!priv->use_afr_in_pump) { + STACK_WIND (frame, + default_fsetattr_cbk, + FIRST_CHILD (this), + FIRST_CHILD (this)->fops->fsetattr, + fd, stbuf, valid, xdata); + return 0; + } + afr_fsetattr (frame, this, fd, stbuf, valid, xdata); + return 0; + +} + + +/* End of defaults */ + + +int32_t +mem_acct_init (xlator_t *this) +{ + int ret = -1; + + if (!this) + return ret; + + ret = xlator_mem_acct_init (this, gf_afr_mt_end + 1); + + if (ret != 0) { + gf_log(this->name, GF_LOG_ERROR, "Memory accounting init" + "failed"); + return ret; + } + + return ret; +} + +static int +is_xlator_pump_sink (xlator_t *child) +{ + return (child == PUMP_SINK_CHILD(THIS)); +} + +static int +is_xlator_pump_source (xlator_t *child) +{ + return (child == PUMP_SOURCE_CHILD(THIS)); +} + +int32_t +notify (xlator_t *this, int32_t event, + void *data, ...) +{ + int ret = -1; + xlator_t *child_xl = NULL; + + child_xl = (xlator_t *) data; + + ret = afr_notify (this, event, data, NULL); + + switch (event) { + case GF_EVENT_CHILD_DOWN: + if (is_xlator_pump_source (child_xl)) + pump_change_state (this, PUMP_STATE_ABORT); + break; + + case GF_EVENT_CHILD_UP: + if (is_xlator_pump_sink (child_xl)) + if (is_pump_start_pending (this)) { + gf_log (this->name, GF_LOG_DEBUG, + "about to start synctask"); + ret = pump_start_synctask (this); + if (ret < 0) + gf_log (this->name, GF_LOG_DEBUG, + "Could not start pump " + "synctask"); + else + pump_remove_start_pending (this); + } + } + + return ret; +} + +int32_t +init (xlator_t *this) +{ + afr_private_t * priv = NULL; + pump_private_t *pump_priv = NULL; + int child_count = 0; + xlator_list_t * trav = NULL; + int i = 0; + int ret = -1; + GF_UNUSED int op_errno = 0; + + int source_child = 0; + + if (!this->children) { + gf_log (this->name, GF_LOG_ERROR, + "pump translator needs a source and sink" + "subvolumes defined."); + return -1; + } + + if (!this->parents) { + gf_log (this->name, GF_LOG_WARNING, + "Volume is dangling."); + } + + this->private = GF_CALLOC (1, sizeof (afr_private_t), + gf_afr_mt_afr_private_t); + if (!this->private) + goto out; + + priv = this->private; + LOCK_INIT (&priv->lock); + LOCK_INIT (&priv->read_child_lock); + //lock recovery is not done in afr + pthread_mutex_init (&priv->mutex, NULL); + INIT_LIST_HEAD (&priv->saved_fds); + + child_count = xlator_subvolume_count (this); + if (child_count != 2) { + gf_log (this->name, GF_LOG_ERROR, + "There should be exactly 2 children - one source " + "and one sink"); + return -1; + } + priv->child_count = child_count; + + priv->read_child = source_child; + priv->favorite_child = source_child; + priv->background_self_heal_count = 0; + + priv->data_self_heal = "on"; + priv->metadata_self_heal = 1; + priv->entry_self_heal = 1; + + priv->data_self_heal_window_size = 16; + + priv->data_change_log = 1; + priv->metadata_change_log = 1; + priv->entry_change_log = 1; + priv->use_afr_in_pump = 1; + priv->sh_readdir_size = 65536; + + /* Locking options */ + + /* Lock server count infact does not matter. Locks are held + on all subvolumes, in this case being the source + and the sink. + */ + + priv->strict_readdir = _gf_false; + + priv->wait_count = 1; + priv->child_up = GF_CALLOC (sizeof (unsigned char), child_count, + gf_afr_mt_char); + if (!priv->child_up) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory."); + op_errno = ENOMEM; + goto out; + } + + priv->children = GF_CALLOC (sizeof (xlator_t *), child_count, + gf_afr_mt_xlator_t); + if (!priv->children) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory."); + op_errno = ENOMEM; + goto out; + } + + priv->pending_key = GF_CALLOC (sizeof (*priv->pending_key), + child_count, + gf_afr_mt_char); + if (!priv->pending_key) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory."); + op_errno = ENOMEM; + goto out; + } + + trav = this->children; + i = 0; + while (i < child_count) { + priv->children[i] = trav->xlator; + + ret = gf_asprintf (&priv->pending_key[i], "%s.%s", AFR_XATTR_PREFIX, + trav->xlator->name); + if (-1 == ret) { + gf_log (this->name, GF_LOG_ERROR, + "asprintf failed to set pending key"); + op_errno = ENOMEM; + goto out; + } + + trav = trav->next; + i++; + } + + ret = gf_asprintf (&priv->sh_domain, "%s-self-heal", this->name); + if (-1 == ret) { + op_errno = ENOMEM; + goto out; + } + + priv->first_lookup = 1; + priv->root_inode = NULL; + + priv->last_event = GF_CALLOC (child_count, sizeof (*priv->last_event), + gf_afr_mt_int32_t); + if (!priv->last_event) { + ret = -ENOMEM; + goto out; + } + + pump_priv = GF_CALLOC (1, sizeof (*pump_priv), + gf_afr_mt_pump_priv); + if (!pump_priv) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory"); + op_errno = ENOMEM; + goto out; + } + + LOCK_INIT (&pump_priv->resume_path_lock); + LOCK_INIT (&pump_priv->pump_state_lock); + + pump_priv->resume_path = GF_CALLOC (1, PATH_MAX, + gf_afr_mt_char); + if (!pump_priv->resume_path) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory"); + ret = -1; + goto out; + } + + pump_priv->env = this->ctx->env; + if (!pump_priv->env) { + gf_log (this->name, GF_LOG_ERROR, + "Could not create new sync-environment"); + ret = -1; + goto out; + } + + /* keep more local here as we may need them for self-heal etc */ + this->local_pool = mem_pool_new (afr_local_t, 128); + if (!this->local_pool) { + ret = -1; + gf_log (this->name, GF_LOG_ERROR, + "failed to create local_t's memory pool"); + goto out; + } + + priv->pump_private = pump_priv; + + pump_change_state (this, PUMP_STATE_ABORT); + + ret = 0; +out: + return ret; +} + +int +fini (xlator_t *this) +{ + afr_private_t * priv = NULL; + pump_private_t *pump_priv = NULL; + + priv = this->private; + this->private = NULL; + if (!priv) + goto out; + + pump_priv = priv->pump_private; + if (!pump_priv) + goto afr_priv; + + GF_FREE (pump_priv->resume_path); + LOCK_DESTROY (&pump_priv->resume_path_lock); + LOCK_DESTROY (&pump_priv->pump_state_lock); + GF_FREE (pump_priv); +afr_priv: + afr_priv_destroy (priv); +out: + return 0; +} + + +struct xlator_fops fops = { + .lookup = pump_lookup, + .open = pump_open, + .flush = pump_flush, + .fsync = pump_fsync, + .fsyncdir = pump_fsyncdir, + .xattrop = pump_xattrop, + .fxattrop = pump_fxattrop, + .getxattr = pump_getxattr, + + /* inode write */ + .writev = pump_writev, + .truncate = pump_truncate, + .ftruncate = pump_ftruncate, + .setxattr = pump_setxattr, + .setattr = pump_setattr, + .fsetattr = pump_fsetattr, + .removexattr = pump_removexattr, + + /* dir read */ + .opendir = pump_opendir, + .readdir = pump_readdir, + .readdirp = pump_readdirp, + + /* dir write */ + .create = pump_create, + .mknod = pump_mknod, + .mkdir = pump_mkdir, + .unlink = pump_unlink, + .rmdir = pump_rmdir, + .link = pump_link, + .symlink = pump_symlink, + .rename = pump_rename, +}; + +struct xlator_dumpops dumpops = { + .priv = afr_priv_dump, +}; + + +struct xlator_cbks cbks = { + .release = pump_release, + .releasedir = pump_releasedir, + .forget = pump_forget, +}; + +struct volume_options options[] = { + { .key = {NULL} }, +}; diff --git a/xlators/cluster/afr/src/pump.h b/xlators/cluster/afr/src/pump.h new file mode 100644 index 000000000..bc4c31a78 --- /dev/null +++ b/xlators/cluster/afr/src/pump.h @@ -0,0 +1,78 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#ifndef __PUMP_H__ +#define __PUMP_H__ + +#include "syncop.h" + +/* FIXME: Needs to be defined in a common file */ +#define CLIENT_CMD_CONNECT "trusted.glusterfs.client-connect" +#define CLIENT_CMD_DISCONNECT "trusted.glusterfs.client-disconnect" + +#define PUMP_SOURCE_COMPLETE "trusted.glusterfs.pump-source-complete" +#define PUMP_SINK_COMPLETE "trusted.glusterfs.pump-sink-complete" + +#define PUMP_PATH "trusted.glusterfs.pump-path" + +#define PUMP_SOURCE_CHILD(xl) (xl->children->xlator) +#define PUMP_SINK_CHILD(xl) (xl->children->next->xlator) + +typedef enum { + PUMP_STATE_RUNNING, /* Pump is running and migrating files */ + PUMP_STATE_RESUME, /* Pump is resuming from a previous pause */ + PUMP_STATE_PAUSE, /* Pump is paused */ + PUMP_STATE_ABORT, /* Pump is aborted */ + PUMP_STATE_COMMIT, /* Pump is commited */ +} pump_state_t; + +typedef struct _pump_private { + struct syncenv *env; /* The env pointer to the pump synctask */ + char *resume_path; /* path to resume from the last pause */ + gf_lock_t resume_path_lock; /* Synchronize resume_path changes */ + gf_lock_t pump_state_lock; /* Synchronize pump_state changes */ + pump_state_t pump_state; /* State of pump */ + char current_file[PATH_MAX]; /* Current file being pumped */ + uint64_t number_files_pumped; /* Number of files pumped */ + gf_boolean_t pump_finished; /* Boolean to indicate pump termination */ + char pump_start_pending; /* Boolean to mark start pending until + CHILD_UP */ + call_stub_t *cleaner; +} pump_private_t; + +void +build_root_loc (inode_t *inode, loc_t *loc); +int pump_start (call_frame_t *frame, xlator_t *this); + +gf_boolean_t +pump_command_start (xlator_t *this, dict_t *dict); + +int +pump_execute_start (call_frame_t *frame, xlator_t *this); + +gf_boolean_t +pump_command_pause (xlator_t *this, dict_t *dict); + +int +pump_execute_pause (call_frame_t *frame, xlator_t *this); + +gf_boolean_t +pump_command_abort (xlator_t *this, dict_t *dict); + +int +pump_execute_abort (call_frame_t *frame, xlator_t *this); + +gf_boolean_t +pump_command_status (xlator_t *this, dict_t *dict); + +int +pump_execute_status (call_frame_t *frame, xlator_t *this); + +#endif /* __PUMP_H__ */ diff --git a/xlators/cluster/dht/src/Makefile.am b/xlators/cluster/dht/src/Makefile.am index f87212699..174bea841 100644 --- a/xlators/cluster/dht/src/Makefile.am +++ b/xlators/cluster/dht/src/Makefile.am @@ -1,30 +1,38 @@ -xlator_LTLIBRARIES = dht.la nufa.la +xlator_LTLIBRARIES = dht.la nufa.la switch.la xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/cluster +dht_common_source = dht-layout.c dht-helper.c dht-linkfile.c dht-rebalance.c \ + dht-selfheal.c dht-rename.c dht-hashfn.c dht-diskusage.c \ + dht-common.c dht-inode-write.c dht-inode-read.c dht-shared.c \ + $(top_builddir)/xlators/lib/src/libxlator.c -dht_common_source = dht-layout.c dht-helper.c dht-linkfile.c \ - dht-selfheal.c dht-rename.c dht-hashfn.c dht-diskusage.c - -dht_la_SOURCES = $(dht_common_source) dht.c +dht_la_SOURCES = $(dht_common_source) dht.c nufa_la_SOURCES = $(dht_common_source) nufa.c +switch_la_SOURCES = $(dht_common_source) switch.c -dht_la_LDFLAGS = -module -avoidversion +dht_la_LDFLAGS = -module -avoid-version dht_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la -nufa_la_LDFLAGS = -module -avoidversion +nufa_la_LDFLAGS = -module -avoid-version nufa_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la -noinst_HEADERS = dht-common.h dht-common.c +switch_la_LDFLAGS = -module -avoid-version +switch_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la + +noinst_HEADERS = dht-common.h dht-mem-types.h \ + $(top_builddir)/xlators/lib/src/libxlator.h + +AM_CPPFLAGS = $(GF_CPPFLAGS) -I$(top_srcdir)/libglusterfs/src \ + -I$(top_srcdir)/xlators/lib/src -AM_CFLAGS = -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -Wall -D$(GF_HOST_OS) \ - -I$(top_srcdir)/libglusterfs/src -shared -nostartfiles $(GF_CFLAGS) +AM_CFLAGS = -Wall $(GF_CFLAGS) -CLEANFILES = +CLEANFILES = uninstall-local: rm -f $(DESTDIR)$(xlatordir)/distribute.so install-data-hook: - ln -sf dht.so $(DESTDIR)$(xlatordir)/distribute.so
\ No newline at end of file + ln -sf dht.so $(DESTDIR)$(xlatordir)/distribute.so diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c index 7c0c8f058..8f61339e6 100644 --- a/xlators/cluster/dht/src/dht-common.c +++ b/xlators/cluster/dht/src/dht-common.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2009-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ @@ -27,10 +18,87 @@ #include "glusterfs.h" #include "xlator.h" +#include "libxlator.h" #include "dht-common.h" #include "defaults.h" +#include "byte-order.h" +#include "glusterfs-acl.h" #include <sys/time.h> +#include <libgen.h> + +int +dht_aggregate (dict_t *this, char *key, data_t *value, void *data) +{ + dict_t *dst = NULL; + int64_t *ptr = 0, *size = NULL; + int32_t ret = -1; + data_t *dict_data = NULL; + + dst = data; + + if (strcmp (key, GF_XATTR_QUOTA_SIZE_KEY) == 0) { + ret = dict_get_bin (dst, key, (void **)&size); + if (ret < 0) { + size = GF_CALLOC (1, sizeof (int64_t), + gf_common_mt_char); + if (size == NULL) { + gf_log ("dht", GF_LOG_WARNING, + "memory allocation failed"); + return -1; + } + ret = dict_set_bin (dst, key, size, sizeof (int64_t)); + if (ret < 0) { + gf_log ("dht", GF_LOG_WARNING, + "dht aggregate dict set failed"); + GF_FREE (size); + return -1; + } + } + + ptr = data_to_bin (value); + if (ptr == NULL) { + gf_log ("dht", GF_LOG_WARNING, "data to bin failed"); + return -1; + } + + *size = hton64 (ntoh64 (*size) + ntoh64 (*ptr)); + + } else if (fnmatch (GF_XATTR_STIME_PATTERN, key, FNM_NOESCAPE) == 0) { + ret = gf_get_min_stime (THIS, dst, key, value); + if (ret < 0) + return ret; + } else { + /* compare user xattrs only */ + if (!strncmp (key, "user.", strlen ("user."))) { + ret = dict_lookup (dst, key, &dict_data); + if (!ret && dict_data && value) { + ret = is_data_equal (dict_data, value); + if (!ret) + gf_log ("dht", GF_LOG_DEBUG, + "xattr mismatch for %s", key); + } + } + ret = dict_set (dst, key, value); + if (ret) + gf_log ("dht", GF_LOG_WARNING, "xattr dict set failed"); + } + + return 0; +} + + +void +dht_aggregate_xattr (dict_t *dst, dict_t *src) +{ + if ((dst == NULL) || (src == NULL)) { + goto out; + } + + dict_foreach (src, dht_aggregate, dst); +out: + return; +} /* TODO: - use volumename in xattr instead of "dht" @@ -42,100 +110,369 @@ int dht_lookup_selfheal_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, - int op_ret, int op_errno) + xlator_t *this, + int op_ret, int op_errno, dict_t *xdata) { - dht_local_t *local = NULL; - dht_layout_t *layout = NULL; - int ret = 0; + dht_local_t *local = NULL; + dht_layout_t *layout = NULL; + int ret = -1; - local = frame->local; - ret = op_ret; - - if (ret == 0) { - layout = local->selfheal.layout; - ret = inode_ctx_put (local->inode, this, - (uint64_t)(long)layout); - - if (ret == 0) - local->selfheal.layout = NULL; - - if (local->st_ino) { - local->stbuf.st_ino = local->st_ino; - } else { - gf_log (this->name, GF_LOG_DEBUG, - "could not find hashed subvolume for %s", - local->loc.path); - } - } + GF_VALIDATE_OR_GOTO ("dht", frame, out); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + + local = frame->local; + ret = op_ret; - DHT_STACK_UNWIND (frame, ret, local->op_errno, local->inode, - &local->stbuf, local->xattr); + FRAME_SU_UNDO (frame, dht_local_t); - return 0; + if (ret == 0) { + layout = local->selfheal.layout; + ret = dht_layout_set (this, local->inode, layout); + } + + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + &local->postparent, 1); + } + + DHT_STRIP_PHASE1_FLAGS (&local->stbuf); + + DHT_STACK_UNWIND (lookup, frame, ret, local->op_errno, local->inode, + &local->stbuf, local->xattr, &local->postparent); + +out: + return ret; +} + + +int +dht_discover_complete (xlator_t *this, call_frame_t *discover_frame) +{ + dht_local_t *local = NULL; + call_frame_t *main_frame = NULL; + int op_errno = 0; + int ret = -1; + dht_layout_t *layout = NULL; + dht_conf_t *conf = NULL; + + local = discover_frame->local; + layout = local->layout; + conf = this->private; + + LOCK(&discover_frame->lock); + { + main_frame = local->main_frame; + local->main_frame = NULL; + } + UNLOCK(&discover_frame->lock); + + if (!main_frame) + return 0; + + if (local->file_count && local->dir_count) { + gf_log (this->name, GF_LOG_ERROR, + "path %s exists as a file on one subvolume " + "and directory on another. " + "Please fix it manually", + local->loc.path); + op_errno = EIO; + goto out; + } + + if (local->cached_subvol) { + ret = dht_layout_preset (this, local->cached_subvol, + local->inode); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "failed to set layout for subvolume %s", + local->cached_subvol ? local->cached_subvol->name : "<nil>"); + op_errno = EINVAL; + goto out; + } + } else { + ret = dht_layout_normalize (this, &local->loc, layout); + if ((ret < 0) || ((ret > 0) && (local->op_ret != 0))) { + /* either the layout is incorrect or the directory is + * not found even in one subvolume. + */ + gf_log (this->name, GF_LOG_DEBUG, + "normalizing failed on %s " + "(overlaps/holes present: %s, " + "ENOENT errors: %d)", local->loc.path, + (ret < 0) ? "yes" : "no", (ret > 0) ? ret : 0); + if ((ret > 0) && (ret == conf->subvolume_cnt)) { + op_errno = ESTALE; + goto out; + } + } + + if (local->inode) + dht_layout_set (this, local->inode, layout); + } + + DHT_STACK_UNWIND (lookup, main_frame, local->op_ret, local->op_errno, + local->inode, &local->stbuf, local->xattr, + &local->postparent); + return 0; +out: + DHT_STACK_UNWIND (lookup, main_frame, -1, op_errno, NULL, NULL, NULL, + NULL); + + return ret; +} + + +int +dht_discover_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent) +{ + dht_local_t *local = NULL; + int this_call_cnt = 0; + call_frame_t *prev = NULL; + dht_layout_t *layout = NULL; + int ret = -1; + int is_dir = 0; + int is_linkfile = 0; + int attempt_unwind = 0; + dht_conf_t *conf = 0; + + GF_VALIDATE_OR_GOTO ("dht", frame, out); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", this->private, out); + GF_VALIDATE_OR_GOTO ("dht", cookie, out); + + local = frame->local; + prev = cookie; + conf = this->private; + + layout = local->layout; + + /* Check if the gfid is different for file from other node */ + if (!op_ret && uuid_compare (local->gfid, stbuf->ia_gfid)) { + gf_log (this->name, GF_LOG_WARNING, + "%s: gfid different on %s", + local->loc.path, prev->this->name); + } + + + LOCK (&frame->lock); + { + /* TODO: assert equal mode on stbuf->st_mode and + local->stbuf->st_mode + + else mkdir/chmod/chown and fix + */ + ret = dht_layout_merge (this, layout, prev->this, + op_ret, op_errno, xattr); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to merge layouts", local->loc.path); + + if (op_ret == -1) { + local->op_errno = op_errno; + gf_log (this->name, GF_LOG_DEBUG, + "lookup of %s on %s returned error (%s)", + local->loc.path, prev->this->name, + strerror (op_errno)); + + goto unlock; + } + + is_linkfile = check_is_linkfile (inode, stbuf, xattr, + conf->link_xattr_name); + is_dir = check_is_dir (inode, stbuf, xattr); + + if (is_dir) { + local->dir_count ++; + } else { + local->file_count ++; + + if (!is_linkfile) { + /* real file */ + local->cached_subvol = prev->this; + attempt_unwind = 1; + } else { + goto unlock; + } + } + + local->op_ret = 0; + + if (local->xattr == NULL) { + local->xattr = dict_ref (xattr); + } else { + dht_aggregate_xattr (local->xattr, xattr); + } + + if (local->inode == NULL) + local->inode = inode_ref (inode); + + dht_iatt_merge (this, &local->stbuf, stbuf, prev->this); + dht_iatt_merge (this, &local->postparent, postparent, + prev->this); + } +unlock: + UNLOCK (&frame->lock); +out: + this_call_cnt = dht_frame_return (frame); + + if (is_last_call (this_call_cnt) || attempt_unwind) { + dht_discover_complete (this, frame); + } + + if (is_last_call (this_call_cnt)) + DHT_STACK_DESTROY (frame); + + return 0; +} + + +int +dht_discover (call_frame_t *frame, xlator_t *this, loc_t *loc) +{ + int ret; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; + int call_cnt = 0; + int op_errno = EINVAL; + int i = 0; + call_frame_t *discover_frame = NULL; + + conf = this->private; + local = frame->local; + + ret = dict_set_uint32 (local->xattr_req, conf->xattr_name, 4 * 4); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to set '%s' key", + loc->path, conf->xattr_name); + + ret = dict_set_uint32 (local->xattr_req, conf->link_xattr_name, 256); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to set '%s' key", + loc->path, conf->link_xattr_name); + + call_cnt = conf->subvolume_cnt; + local->call_cnt = call_cnt; + + local->layout = dht_layout_new (this, conf->subvolume_cnt); + + if (!local->layout) { + op_errno = ENOMEM; + goto err; + } + + uuid_copy (local->gfid, loc->gfid); + + discover_frame = copy_frame (frame); + if (!discover_frame) { + op_errno = ENOMEM; + goto err; + } + + discover_frame->local = local; + frame->local = NULL; + local->main_frame = frame; + + for (i = 0; i < call_cnt; i++) { + STACK_WIND (discover_frame, dht_discover_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->lookup, + &local->loc, local->xattr_req); + } + + return 0; + +err: + DHT_STACK_UNWIND (lookup, frame, -1, op_errno, NULL, NULL, NULL, + NULL); + + return 0; } int dht_lookup_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf, dict_t *xattr) + inode_t *inode, struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent) { - dht_conf_t *conf = NULL; - dht_local_t *local = NULL; - int this_call_cnt = 0; - call_frame_t *prev = NULL; - dht_layout_t *layout = NULL; - int ret = 0; - int is_dir = 0; + dht_local_t *local = NULL; + int this_call_cnt = 0; + call_frame_t *prev = NULL; + dht_layout_t *layout = NULL; + int ret = -1; + int is_dir = 0; + + GF_VALIDATE_OR_GOTO ("dht", frame, out); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", this->private, out); + GF_VALIDATE_OR_GOTO ("dht", cookie, out); - conf = this->private; local = frame->local; prev = cookie; - layout = local->layout; + layout = local->layout; + + if (!op_ret && uuid_is_null (local->gfid)) + memcpy (local->gfid, stbuf->ia_gfid, 16); + + /* Check if the gfid is different for file from other node */ + if (!op_ret && uuid_compare (local->gfid, stbuf->ia_gfid)) { + gf_log (this->name, GF_LOG_WARNING, + "%s: gfid different on %s", + local->loc.path, prev->this->name); + } LOCK (&frame->lock); { /* TODO: assert equal mode on stbuf->st_mode and - local->stbuf->st_mode + local->stbuf->st_mode - else mkdir/chmod/chown and fix - */ - ret = dht_layout_merge (this, layout, prev->this, - op_ret, op_errno, xattr); + else mkdir/chmod/chown and fix + */ + ret = dht_layout_merge (this, layout, prev->this, + op_ret, op_errno, xattr); - if (op_ret == -1) { - local->op_errno = ENOENT; - gf_log (this->name, GF_LOG_DEBUG, - "lookup of %s on %s returned error (%s)", - local->loc.path, prev->this->name, - strerror (op_errno)); + if (op_ret == -1) { + local->op_errno = op_errno; + gf_log (this->name, GF_LOG_DEBUG, + "lookup of %s on %s returned error (%s)", + local->loc.path, prev->this->name, + strerror (op_errno)); - goto unlock; - } + goto unlock; + } - is_dir = check_is_dir (inode, stbuf, xattr); - if (!is_dir) { + is_dir = check_is_dir (inode, stbuf, xattr); + if (!is_dir) { gf_log (this->name, GF_LOG_DEBUG, "lookup of %s on %s returned non dir 0%o", local->loc.path, prev->this->name, - stbuf->st_mode); + stbuf->ia_type); local->need_selfheal = 1; - goto unlock; + goto unlock; } - local->op_ret = 0; - if (local->xattr == NULL) - local->xattr = dict_ref (xattr); - if (local->inode == NULL) - local->inode = inode_ref (inode); - - dht_stat_merge (this, &local->stbuf, stbuf, prev->this); + local->op_ret = 0; + if (local->xattr == NULL) { + local->xattr = dict_ref (xattr); + } else { + dht_aggregate_xattr (local->xattr, xattr); + } - if (prev->this == local->hashed_subvol) - local->st_ino = local->stbuf.st_ino; + if (local->inode == NULL) + local->inode = inode_ref (inode); + dht_iatt_merge (this, &local->stbuf, stbuf, prev->this); + dht_iatt_merge (this, &local->postparent, postparent, + prev->this); } unlock: UNLOCK (&frame->lock); @@ -150,176 +487,270 @@ unlock: return 0; } - if (local->op_ret == 0) { - ret = dht_layout_normalize (this, &local->loc, layout); + if (local->op_ret == 0) { + ret = dht_layout_normalize (this, &local->loc, layout); - local->layout = NULL; + if (ret != 0) { + gf_log (this->name, GF_LOG_DEBUG, + "fixing assignment on %s", + local->loc.path); + goto selfheal; + } - if (ret != 0) { - gf_log (this->name, GF_LOG_DEBUG, - "fixing assignment on %s", - local->loc.path); - goto selfheal; - } - - inode_ctx_put (local->inode, this, - (uint64_t)(long)layout); - - if (local->st_ino) { - local->stbuf.st_ino = local->st_ino; - } else { - gf_log (this->name, GF_LOG_DEBUG, - "could not find hashed subvol for %s", - local->loc.path); - } - } + dht_layout_set (this, local->inode, layout); + } - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->inode, &local->stbuf, local->xattr); + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + &local->postparent, 1); + } + + DHT_STRIP_PHASE1_FLAGS (&local->stbuf); + DHT_STACK_UNWIND (lookup, frame, local->op_ret, local->op_errno, + local->inode, &local->stbuf, local->xattr, + &local->postparent); } - return 0; + return 0; selfheal: - ret = dht_selfheal_directory (frame, dht_lookup_selfheal_cbk, - &local->loc, layout); - - return 0; + FRAME_SU_DO (frame, dht_local_t); + uuid_copy (local->loc.gfid, local->gfid); + ret = dht_selfheal_directory (frame, dht_lookup_selfheal_cbk, + &local->loc, layout); +out: + return ret; } int dht_revalidate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf, dict_t *xattr) + inode_t *inode, struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent) { dht_local_t *local = NULL; int this_call_cnt = 0; call_frame_t *prev = NULL; - dht_layout_t *layout = NULL; - dht_conf_t *conf = NULL; - int ret = -1; - int is_dir = 0; - int is_linkfile = 0; + dht_layout_t *layout = NULL; + dht_conf_t *conf = NULL; + int ret = -1; + int is_dir = 0; + int is_linkfile = 0; + call_frame_t *copy = NULL; + dht_local_t *copy_local = NULL; + + GF_VALIDATE_OR_GOTO ("dht", frame, err); + GF_VALIDATE_OR_GOTO ("dht", this, err); + GF_VALIDATE_OR_GOTO ("dht", frame->local, err); + GF_VALIDATE_OR_GOTO ("dht", cookie, err); local = frame->local; prev = cookie; - conf = this->private; + conf = this->private; + if (!conf) + goto out; LOCK (&frame->lock); { - if (op_ret == -1) { - local->op_errno = op_errno; + if (op_ret == -1) { + local->op_errno = op_errno; - if ((op_errno != ENOTCONN) + if ((op_errno != ENOTCONN) && (op_errno != ENOENT) && (op_errno != ESTALE)) { - gf_log (this->name, GF_LOG_DEBUG, - "subvolume %s returned -1 (%s)", - prev->this->name, strerror (op_errno)); + gf_log (this->name, GF_LOG_INFO, + "subvolume %s for %s returned -1 (%s)", + prev->this->name, local->loc.path, + strerror (op_errno)); } - if (op_errno == ESTALE) { - /* propogate the ESTALE to parent. - * setting local->layout_mismatch would send + /* propagate the ESTALE to parent. + * setting local->return_estale would send * ESTALE to parent. */ - local->layout_mismatch = 1; + local->return_estale = 1; } - goto unlock; - } + /* if it is ENOENT, we may have to do a + * 'lookup_everywhere()' to make sure + * the file is not migrated */ + if (op_errno == ENOENT) { + if (IA_ISREG (local->loc.inode->ia_type)) { + local->need_lookup_everywhere = 1; + } + } + goto unlock; + } - if (S_IFMT & (stbuf->st_mode ^ local->inode->st_mode)) { - gf_log (this->name, GF_LOG_DEBUG, - "mismatching filetypes 0%o v/s 0%o for %s", - (stbuf->st_mode & S_IFMT), - (local->inode->st_mode & S_IFMT), - local->loc.path); + if (stbuf->ia_type != local->inode->ia_type) { + gf_log (this->name, GF_LOG_INFO, + "mismatching filetypes 0%o v/s 0%o for %s", + (stbuf->ia_type), (local->inode->ia_type), + local->loc.path); - local->op_ret = -1; - local->op_errno = EINVAL; + local->op_ret = -1; + local->op_errno = EINVAL; - goto unlock; - } + goto unlock; + } - layout = dht_layout_get (this, inode); - - is_dir = check_is_dir (inode, stbuf, xattr); - is_linkfile = check_is_linkfile (inode, stbuf, xattr); - - if (is_linkfile) { - gf_log (this->name, GF_LOG_DEBUG, - "linkfile found in revalidate for %s", - local->loc.path); - local->layout_mismatch = 1; - - goto unlock; - } + layout = local->layout; - if (is_dir) { - ret = dht_layout_dir_mismatch (this, layout, - prev->this, &local->loc, - xattr); - if (ret != 0) { - gf_log (this->name, GF_LOG_DEBUG, - "mismatching layouts for %s", - local->loc.path); - - local->layout_mismatch = 1; - - goto unlock; - } - } - - dht_stat_merge (this, &local->stbuf, stbuf, prev->this); - - local->op_ret = 0; - local->stbuf.st_ino = local->st_ino; - - if (!local->xattr) - local->xattr = dict_ref (xattr); - } -unlock: - UNLOCK (&frame->lock); + is_dir = check_is_dir (inode, stbuf, xattr); + is_linkfile = check_is_linkfile (inode, stbuf, xattr, + conf->link_xattr_name); + + if (is_linkfile) { + gf_log (this->name, GF_LOG_INFO, + "linkfile found in revalidate for %s", + local->loc.path); + local->return_estale = 1; + goto unlock; + } + + if (is_dir) { + ret = dht_dir_has_layout (xattr, conf->xattr_name); + if (ret >= 0) { + if (is_greater_time(local->stbuf.ia_ctime, + local->stbuf.ia_ctime_nsec, + stbuf->ia_ctime, + stbuf->ia_ctime_nsec)) { + local->prebuf.ia_gid = stbuf->ia_gid; + local->prebuf.ia_uid = stbuf->ia_uid; + } + } + if (local->stbuf.ia_type != IA_INVAL) + { + if ((local->stbuf.ia_gid != stbuf->ia_gid) || + (local->stbuf.ia_uid != stbuf->ia_uid)) { + local->need_selfheal = 1; + } + } + ret = dht_layout_dir_mismatch (this, layout, + prev->this, &local->loc, + xattr); + if (ret != 0) { + gf_log (this->name, GF_LOG_INFO, + "mismatching layouts for %s", + local->loc.path); + + local->layout_mismatch = 1; + + goto unlock; + } + } + + dht_iatt_merge (this, &local->stbuf, stbuf, prev->this); + dht_iatt_merge (this, &local->postparent, postparent, + prev->this); + + local->op_ret = 0; + + if (!local->xattr) { + local->xattr = dict_ref (xattr); + } else if (is_dir) { + dht_aggregate_xattr (local->xattr, xattr); + } + } +unlock: + UNLOCK (&frame->lock); +out: this_call_cnt = dht_frame_return (frame); if (is_last_call (this_call_cnt)) { - if (!S_ISDIR (local->stbuf.st_mode) - && (local->hashed_subvol != local->cached_subvol) - && (local->stbuf.st_nlink == 1) - && (conf->unhashed_sticky_bit)) { - local->stbuf.st_mode |= S_ISVTX; - } - + if (!IA_ISDIR (local->stbuf.ia_type) + && (local->hashed_subvol != local->cached_subvol) + && (local->stbuf.ia_nlink == 1) + && (conf && conf->unhashed_sticky_bit)) { + local->stbuf.ia_prot.sticky = 1; + } + if (local->need_selfheal) { + local->need_selfheal = 0; + uuid_copy (local->gfid, local->stbuf.ia_gfid); + local->stbuf.ia_gid = local->prebuf.ia_gid; + local->stbuf.ia_uid = local->prebuf.ia_uid; + copy = create_frame (this, this->ctx->pool); + if (copy) { + copy_local = dht_local_init (copy, &local->loc, + NULL, 0); + if (!copy_local) + goto cont; + copy_local->stbuf = local->stbuf; + copy->local = copy_local; + FRAME_SU_DO (copy, dht_local_t); + ret = synctask_new (this->ctx->env, + dht_dir_attr_heal, + dht_dir_attr_heal_done, + copy, copy); + } + } +cont: if (local->layout_mismatch) { - local->op_ret = -1; - local->op_errno = ESTALE; - } - - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->inode, &local->stbuf, local->xattr); - } + /* Found layout mismatch in the directory, need to + fix this in the inode context */ + dht_layout_unref (this, local->layout); + local->layout = NULL; + dht_lookup_directory (frame, this, &local->loc); + return 0; + } - return 0; + if (local->need_lookup_everywhere) { + /* As the current layout gave ENOENT error, we would + need a new layout */ + dht_layout_unref (this, local->layout); + local->layout = NULL; + + /* We know that current cached subvol is no more + valid, get the new one */ + local->cached_subvol = NULL; + dht_lookup_everywhere (frame, this, &local->loc); + return 0; + } + if (local->return_estale) { + local->op_ret = -1; + local->op_errno = ESTALE; + } + + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + &local->postparent, 1); + } + + DHT_STRIP_PHASE1_FLAGS (&local->stbuf); + DHT_STACK_UNWIND (lookup, frame, local->op_ret, local->op_errno, + local->inode, &local->stbuf, local->xattr, + &local->postparent); + } + +err: + return ret; } int dht_lookup_linkfile_create_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *stbuf) + xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) { - dht_local_t *local = NULL; - xlator_t *cached_subvol = NULL; - dht_conf_t *conf = NULL; + dht_local_t *local = NULL; + xlator_t *cached_subvol = NULL; + dht_conf_t *conf = NULL; int ret = -1; - local = frame->local; - cached_subvol = local->cached_subvol; - conf = this->private; + GF_VALIDATE_OR_GOTO ("dht", frame, out); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", this->private, out); + GF_VALIDATE_OR_GOTO ("dht", cookie, out); - ret = dht_layout_inode_set (this, local->cached_subvol, inode); + local = frame->local; + cached_subvol = local->cached_subvol; + conf = this->private; + + ret = dht_layout_preset (this, local->cached_subvol, inode); if (ret < 0) { gf_log (this->name, GF_LOG_DEBUG, "failed to set layout for subvolume %s", @@ -329,65 +760,232 @@ dht_lookup_linkfile_create_cbk (call_frame_t *frame, void *cookie, goto unwind; } - local->op_ret = 0; - if ((local->stbuf.st_nlink == 1) - && (conf->unhashed_sticky_bit)) { - local->stbuf.st_mode |= S_ISVTX; - } + local->op_ret = 0; + if ((local->stbuf.ia_nlink == 1) + && (conf && conf->unhashed_sticky_bit)) { + local->stbuf.ia_prot.sticky = 1; + } + + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + postparent, 1); + } unwind: - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->inode, &local->stbuf, local->xattr); - return 0; + if (local->linked == _gf_true) + dht_linkfile_attr_heal (frame, this); + + DHT_STRIP_PHASE1_FLAGS (&local->stbuf); + DHT_STACK_UNWIND (lookup, frame, local->op_ret, local->op_errno, + local->inode, &local->stbuf, local->xattr, + &local->postparent); +out: + return ret; +} + + +int +dht_lookup_everywhere_done (call_frame_t *frame, xlator_t *this) +{ + int ret = 0; + dht_local_t *local = NULL; + xlator_t *hashed_subvol = NULL; + xlator_t *cached_subvol = NULL; + dht_layout_t *layout = NULL; + + local = frame->local; + hashed_subvol = local->hashed_subvol; + cached_subvol = local->cached_subvol; + + if (local->file_count && local->dir_count) { + gf_log (this->name, GF_LOG_ERROR, + "path %s exists as a file on one subvolume " + "and directory on another. " + "Please fix it manually", + local->loc.path); + DHT_STACK_UNWIND (lookup, frame, -1, EIO, NULL, NULL, NULL, + NULL); + return 0; + } + + if (local->dir_count) { + dht_lookup_directory (frame, this, &local->loc); + return 0; + } + + if (!cached_subvol) { + DHT_STACK_UNWIND (lookup, frame, -1, ENOENT, NULL, NULL, NULL, + NULL); + return 0; + } + + if (local->need_lookup_everywhere) { + if (uuid_compare (local->gfid, local->inode->gfid)) { + /* GFID different, return error */ + DHT_STACK_UNWIND (lookup, frame, -1, ENOENT, NULL, + NULL, NULL, NULL); + return 0; + } + local->op_ret = 0; + local->op_errno = 0; + layout = dht_layout_for_subvol (this, cached_subvol); + if (!layout) { + gf_log (this->name, GF_LOG_INFO, + "%s: no pre-set layout for subvolume %s", + local->loc.path, (cached_subvol ? + cached_subvol->name : + "<nil>")); + } + + ret = dht_layout_set (this, local->inode, layout); + if (ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "%s: failed to set layout for subvol %s", + local->loc.path, (cached_subvol ? + cached_subvol->name : + "<nil>")); + } + + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + &local->postparent, 1); + } + + DHT_STRIP_PHASE1_FLAGS (&local->stbuf); + DHT_STACK_UNWIND (lookup, frame, local->op_ret, + local->op_errno, local->inode, + &local->stbuf, local->xattr, + &local->postparent); + return 0; + } + + if (!hashed_subvol) { + gf_log (this->name, GF_LOG_INFO, + "cannot create linkfile file for %s on %s: " + "hashed subvolume cannot be found.", + local->loc.path, cached_subvol->name); + + local->op_ret = 0; + local->op_errno = 0; + + ret = dht_layout_preset (frame->this, cached_subvol, + local->inode); + if (ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "failed to set layout for subvol %s", + cached_subvol ? cached_subvol->name : + "<nil>"); + local->op_ret = -1; + local->op_errno = EINVAL; + } + + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + &local->postparent, 1); + } + + DHT_STRIP_PHASE1_FLAGS (&local->stbuf); + DHT_STACK_UNWIND (lookup, frame, local->op_ret, + local->op_errno, local->inode, + &local->stbuf, local->xattr, + &local->postparent); + return 0; + } + + gf_log (this->name, GF_LOG_DEBUG, + "linking file %s existing on %s to %s (hash)", + local->loc.path, cached_subvol->name, + hashed_subvol->name); + + ret = dht_linkfile_create (frame, + dht_lookup_linkfile_create_cbk, this, + cached_subvol, hashed_subvol, &local->loc); + + return ret; +} + + +int +dht_lookup_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) +{ + int this_call_cnt = 0; + + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + dht_lookup_everywhere_done (frame, this); + } + + return 0; } int dht_lookup_everywhere_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *buf, dict_t *xattr) + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *buf, dict_t *xattr, + struct iatt *postparent) { - dht_conf_t *conf = NULL; dht_local_t *local = NULL; int this_call_cnt = 0; call_frame_t *prev = NULL; - int is_linkfile = 0; - int is_dir = 0; - xlator_t *subvol = NULL; - loc_t *loc = NULL; - xlator_t *link_subvol = NULL; - xlator_t *hashed_subvol = NULL; - xlator_t *cached_subvol = NULL; - int ret = -1; + int is_linkfile = 0; + int is_dir = 0; + xlator_t *subvol = NULL; + loc_t *loc = NULL; + xlator_t *link_subvol = NULL; + int ret = -1; + int32_t fd_count = 0; + dht_conf_t *conf = NULL; + + GF_VALIDATE_OR_GOTO ("dht", frame, out); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", cookie, out); + GF_VALIDATE_OR_GOTO ("dht", this->private, out); + + local = frame->local; + loc = &local->loc; + conf = this->private; + + prev = cookie; + subvol = prev->this; - conf = this->private; + LOCK (&frame->lock); + { + if (op_ret == -1) { + if (op_errno != ENOENT) + local->op_errno = op_errno; + goto unlock; + } - local = frame->local; - loc = &local->loc; + if (uuid_is_null (local->gfid)) + uuid_copy (local->gfid, buf->ia_gfid); - prev = cookie; - subvol = prev->this; + if (uuid_compare (local->gfid, buf->ia_gfid)) { + gf_log (this->name, GF_LOG_WARNING, + "%s: gfid differs on subvolume %s", + loc->path, prev->this->name); + } - LOCK (&frame->lock); - { - if (op_ret == -1) { - if (op_errno != ENOENT) - local->op_errno = op_errno; - goto unlock; - } + is_linkfile = check_is_linkfile (inode, buf, xattr, + conf->link_xattr_name); + is_dir = check_is_dir (inode, buf, xattr); - is_linkfile = check_is_linkfile (inode, buf, xattr); - is_dir = check_is_dir (inode, buf, xattr); - - if (is_linkfile) { - link_subvol = dht_linkfile_subvol (this, inode, buf, - xattr); - gf_log (this->name, GF_LOG_DEBUG, - "found on %s linkfile %s (-> %s)", - subvol->name, loc->path, - link_subvol ? link_subvol->name : "''"); - goto unlock; - } + if (is_linkfile) { + link_subvol = dht_linkfile_subvol (this, inode, buf, + xattr); + gf_log (this->name, GF_LOG_DEBUG, + "found on %s linkfile %s (-> %s)", + subvol->name, loc->path, + link_subvol ? link_subvol->name : "''"); + goto unlock; + } + + /* non linkfile GFID takes precedence */ + uuid_copy (local->gfid, buf->ia_gfid); if (is_dir) { local->dir_count++; @@ -400,189 +998,183 @@ dht_lookup_everywhere_cbk (call_frame_t *frame, void *cookie, xlator_t *this, if (!local->cached_subvol) { /* found one file */ - dht_stat_merge (this, &local->stbuf, buf, + dht_iatt_merge (this, &local->stbuf, buf, subvol); local->xattr = dict_ref (xattr); local->cached_subvol = subvol; gf_log (this->name, GF_LOG_DEBUG, "found on %s file %s", subvol->name, loc->path); + + dht_iatt_merge (this, &local->postparent, + postparent, subvol); } else { - gf_log (this->name, GF_LOG_DEBUG, + /* This is where we need 'rename' both entries logic */ + gf_log (this->name, GF_LOG_WARNING, "multiple subvolumes (%s and %s) have " - "file %s", local->cached_subvol->name, + "file %s (preferably rename the file " + "in the backend, and do a fresh lookup)", + local->cached_subvol->name, subvol->name, local->loc.path); } } - } + } unlock: - UNLOCK (&frame->lock); - - if (is_linkfile) { - gf_log (this->name, GF_LOG_DEBUG, - "deleting stale linkfile %s on %s", - loc->path, subvol->name); - dht_linkfile_unlink (frame, this, subvol, loc); - } - - this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) { - hashed_subvol = local->hashed_subvol; - cached_subvol = local->cached_subvol; - - if (local->file_count && local->dir_count) { - gf_log (this->name, GF_LOG_ERROR, - "path %s exists as a file on one subvolume " - "and directory on another. " - "Please fix it manually", - loc->path); - DHT_STACK_UNWIND (frame, -1, EIO, NULL, NULL, NULL); - return 0; - } - - if (local->dir_count) { - dht_lookup_directory (frame, this, &local->loc); - return 0; - } - - if (!cached_subvol) { - DHT_STACK_UNWIND (frame, -1, ENOENT, NULL, NULL, NULL); - return 0; - } - - if (!hashed_subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "cannot create linkfile file for %s on %s: " - "hashed subvolume cannot be found.", - loc->path, cached_subvol->name); - - local->op_ret = 0; - local->op_errno = 0; - - ret = dht_layout_inode_set (frame->this, cached_subvol, - local->inode); - if (ret < 0) { - gf_log (this->name, GF_LOG_DEBUG, - "failed to set layout for subvol %s", - cached_subvol ? cached_subvol->name : - "<nil>"); - local->op_ret = -1; - local->op_errno = EINVAL; - } + UNLOCK (&frame->lock); - DHT_STACK_UNWIND (frame, local->op_ret, - local->op_errno, local->inode, - &local->stbuf, local->xattr); + if (is_linkfile) { + ret = dict_get_int32 (xattr, GLUSTERFS_OPEN_FD_COUNT, &fd_count); + /* Delete the linkfile only if there are no open fds on it. + if there is a open-fd, it may be in migration */ + if (!ret && (fd_count == 0)) { + gf_log (this->name, GF_LOG_INFO, + "deleting stale linkfile %s on %s", + loc->path, subvol->name); + STACK_WIND (frame, dht_lookup_unlink_cbk, + subvol, subvol->fops->unlink, loc, 0, NULL); return 0; } + } - gf_log (this->name, GF_LOG_DEBUG, - "linking file %s existing on %s to %s (hash)", - loc->path, cached_subvol->name, - hashed_subvol->name); - - dht_linkfile_create (frame, - dht_lookup_linkfile_create_cbk, - cached_subvol, hashed_subvol, loc); - } + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + dht_lookup_everywhere_done (frame, this); + } - return 0; +out: + return ret; } int dht_lookup_everywhere (call_frame_t *frame, xlator_t *this, loc_t *loc) { - dht_conf_t *conf = NULL; - dht_local_t *local = NULL; - int i = 0; - int call_cnt = 0; + dht_conf_t *conf = NULL; + dht_local_t *local = NULL; + int i = 0; + int call_cnt = 0; - conf = this->private; - local = frame->local; + GF_VALIDATE_OR_GOTO ("dht", frame, err); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", this->private, out); + GF_VALIDATE_OR_GOTO ("dht", loc, out); - call_cnt = conf->subvolume_cnt; - local->call_cnt = call_cnt; + conf = this->private; + local = frame->local; - if (!local->inode) - local->inode = inode_ref (loc->inode); + call_cnt = conf->subvolume_cnt; + local->call_cnt = call_cnt; - for (i = 0; i < call_cnt; i++) { - STACK_WIND (frame, dht_lookup_everywhere_cbk, - conf->subvolumes[i], - conf->subvolumes[i]->fops->lookup, - loc, local->xattr_req); - } + if (!local->inode) + local->inode = inode_ref (loc->inode); - return 0; + for (i = 0; i < call_cnt; i++) { + STACK_WIND (frame, dht_lookup_everywhere_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->lookup, + loc, local->xattr_req); + } + + return 0; +out: + DHT_STACK_UNWIND (lookup, frame, -1, EINVAL, NULL, NULL, NULL, NULL); +err: + return -1; } int dht_lookup_linkfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf, dict_t *xattr) + inode_t *inode, struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent) { - call_frame_t *prev = NULL; - dht_local_t *local = NULL; - dht_layout_t *layout = NULL; - xlator_t *subvol = NULL; - loc_t *loc = NULL; - dht_conf_t *conf = NULL; + call_frame_t *prev = NULL; + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + loc_t *loc = NULL; + dht_conf_t *conf = NULL; + int ret = 0; + + GF_VALIDATE_OR_GOTO ("dht", frame, out); + GF_VALIDATE_OR_GOTO ("dht", this, unwind); + GF_VALIDATE_OR_GOTO ("dht", frame->local, unwind); + GF_VALIDATE_OR_GOTO ("dht", this->private, unwind); + GF_VALIDATE_OR_GOTO ("dht", cookie, unwind); prev = cookie; - subvol = prev->this; - conf = this->private; - local = frame->local; - loc = &local->loc; + subvol = prev->this; + conf = this->private; + local = frame->local; + loc = &local->loc; if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "lookup of %s on %s (following linkfile) failed (%s)", - local->loc.path, subvol->name, strerror (op_errno)); - goto err; - } + gf_log (this->name, GF_LOG_INFO, + "lookup of %s on %s (following linkfile) failed (%s)", + local->loc.path, subvol->name, strerror (op_errno)); + + /* If cached subvol returned ENOTCONN, do not do + lookup_everywhere. We need to make sure linkfile does not get + removed, which can take away the namespace, and subvol is + anyways down. */ + + if (op_errno != ENOTCONN) + goto err; + else + goto unwind; + } if (check_is_dir (inode, stbuf, xattr)) { - gf_log (this->name, GF_LOG_DEBUG, + gf_log (this->name, GF_LOG_INFO, "lookup of %s on %s (following linkfile) reached dir", local->loc.path, subvol->name); goto err; } - if (check_is_linkfile (inode, stbuf, xattr)) { - gf_log (this->name, GF_LOG_DEBUG, + if (check_is_linkfile (inode, stbuf, xattr, conf->link_xattr_name)) { + gf_log (this->name, GF_LOG_INFO, "lookup of %s on %s (following linkfile) reached link", local->loc.path, subvol->name); goto err; } - if ((stbuf->st_nlink == 1) - && (conf->unhashed_sticky_bit)) { - stbuf->st_mode |= S_ISVTX; - } - dht_itransform (this, prev->this, stbuf->st_ino, &stbuf->st_ino); - - layout = dht_layout_for_subvol (this, prev->this); - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no pre-set layout for subvolume %s", - prev->this->name); - op_ret = -1; - op_errno = EINVAL; - goto out; - } + if (uuid_compare (local->gfid, stbuf->ia_gfid)) { + gf_log (this->name, GF_LOG_WARNING, + "%s: gfid different on data file on %s", + local->loc.path, subvol->name); + goto err; + } - inode_ctx_put (inode, this, (uint64_t)(long)layout); + if ((stbuf->ia_nlink == 1) + && (conf && conf->unhashed_sticky_bit)) { + stbuf->ia_prot.sticky = 1; + } -out: - DHT_STACK_UNWIND (frame, op_ret, op_errno, inode, stbuf, xattr); + ret = dht_layout_preset (this, prev->this, inode); + if (ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "failed to set layout for subvolume %s", + prev->this->name); + op_ret = -1; + op_errno = EINVAL; + } + + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + postparent, 1); + } + +unwind: + DHT_STRIP_PHASE1_FLAGS (stbuf); + DHT_STACK_UNWIND (lookup, frame, op_ret, op_errno, inode, stbuf, xattr, + postparent); return 0; err: dht_lookup_everywhere (frame, this, loc); - +out: return 0; } @@ -594,21 +1186,38 @@ dht_lookup_directory (call_frame_t *frame, xlator_t *this, loc_t *loc) int i = 0; dht_conf_t *conf = NULL; dht_local_t *local = NULL; + int ret = 0; + + GF_VALIDATE_OR_GOTO ("dht", frame, out); + GF_VALIDATE_OR_GOTO ("dht", this, unwind); + GF_VALIDATE_OR_GOTO ("dht", frame->local, unwind); + GF_VALIDATE_OR_GOTO ("dht", this->private, unwind); + GF_VALIDATE_OR_GOTO ("dht", loc, unwind); conf = this->private; local = frame->local; call_cnt = conf->subvolume_cnt; local->call_cnt = call_cnt; - + local->layout = dht_layout_new (this, conf->subvolume_cnt); if (!local->layout) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - DHT_STACK_UNWIND (frame, -1, ENOMEM, NULL, NULL, NULL); - return 0; + goto unwind; + } + + if (local->xattr != NULL) { + dict_unref (local->xattr); + local->xattr = NULL; + } + + if (!uuid_is_null (local->gfid)) { + ret = dict_set_static_bin (local->xattr_req, "gfid-req", + local->gfid, 16); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to set gfid", local->loc.path); } - + for (i = 0; i < call_cnt; i++) { STACK_WIND (frame, dht_lookup_dir_cbk, conf->subvolumes[i], @@ -616,23 +1225,35 @@ dht_lookup_directory (call_frame_t *frame, xlator_t *this, loc_t *loc) &local->loc, local->xattr_req); } return 0; +unwind: + DHT_STACK_UNWIND (lookup, frame, -1, ENOMEM, NULL, NULL, NULL, NULL); +out: + return 0; + } int dht_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf, dict_t *xattr) + inode_t *inode, struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent) { - dht_layout_t *layout = NULL; - char is_linkfile = 0; - char is_dir = 0; - xlator_t *subvol = NULL; - dht_conf_t *conf = NULL; - dht_local_t *local = NULL; - loc_t *loc = NULL; - call_frame_t *prev = NULL; + char is_linkfile = 0; + char is_dir = 0; + xlator_t *subvol = NULL; + dht_conf_t *conf = NULL; + dht_local_t *local = NULL; + loc_t *loc = NULL; + call_frame_t *prev = NULL; + int ret = 0; + dht_layout_t *parent_layout = NULL; + GF_VALIDATE_OR_GOTO ("dht", frame, err); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", cookie, out); + GF_VALIDATE_OR_GOTO ("dht", this->private, out); conf = this->private; @@ -640,76 +1261,140 @@ dht_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, local = frame->local; loc = &local->loc; - if (ENTRY_MISSING (op_ret, op_errno)) { - if (conf->search_unhashed) { - local->op_errno = ENOENT; - dht_lookup_everywhere (frame, this, loc); - return 0; - } - } + /* This is required for handling stale linkfile deletion, + * or any more call which happens from this 'loc'. + */ + if (!op_ret && uuid_is_null (local->gfid)) + memcpy (local->gfid, stbuf->ia_gfid, 16); + + if (ENTRY_MISSING (op_ret, op_errno)) { + gf_log (this->name, GF_LOG_TRACE, "Entry %s missing on subvol" + " %s", loc->path, prev->this->name); + if (conf->search_unhashed == GF_DHT_LOOKUP_UNHASHED_ON) { + local->op_errno = ENOENT; + dht_lookup_everywhere (frame, this, loc); + return 0; + } + if ((conf->search_unhashed == GF_DHT_LOOKUP_UNHASHED_AUTO) && + (loc->parent)) { + ret = dht_inode_ctx_layout_get (loc->parent, this, + &parent_layout); + if (ret || !parent_layout) + goto out; + if (parent_layout->search_unhashed) { + local->op_errno = ENOENT; + dht_lookup_everywhere (frame, this, loc); + return 0; + } + } + } - if (op_ret == 0) { - is_dir = check_is_dir (inode, stbuf, xattr); - if (is_dir) { - local->inode = inode_ref (inode); - local->xattr = dict_ref (xattr); - } - } + if (op_ret == 0) { + is_dir = check_is_dir (inode, stbuf, xattr); + if (is_dir) { + local->inode = inode_ref (inode); + local->xattr = dict_ref (xattr); + } + } - if (is_dir || (op_ret == -1 && op_errno == ENOTCONN)) { + if (is_dir || (op_ret == -1 && op_errno == ENOTCONN)) { dht_lookup_directory (frame, this, &local->loc); return 0; - } - - if (op_ret == -1) + } + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, "Lookup of %s for subvolume" + " %s failed with error %s", loc->path, prev->this->name, + strerror (op_errno)); goto out; + } - is_linkfile = check_is_linkfile (inode, stbuf, xattr); - is_dir = check_is_dir (inode, stbuf, xattr); + is_linkfile = check_is_linkfile (inode, stbuf, xattr, + conf->link_xattr_name); - if (!is_dir && !is_linkfile) { + if (!is_linkfile) { /* non-directory and not a linkfile */ - dht_itransform (this, prev->this, stbuf->st_ino, - &stbuf->st_ino); - - layout = dht_layout_for_subvol (this, prev->this); - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no pre-set layout for subvolume %s", - prev->this->name); - op_ret = -1; - op_errno = EINVAL; - goto out; - } - - inode_ctx_put (inode, this, (uint64_t)(long)layout); - goto out; - } - - if (is_linkfile) { - subvol = dht_linkfile_subvol (this, inode, stbuf, xattr); - - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "linkfile not having link subvolume. path=%s", - loc->path); - dht_lookup_everywhere (frame, this, loc); - return 0; + ret = dht_layout_preset (this, prev->this, inode); + if (ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "could not set pre-set layout for subvolume %s", + prev->this->name); + op_ret = -1; + op_errno = EINVAL; + goto out; } + goto out; + } - STACK_WIND (frame, dht_lookup_linkfile_cbk, - subvol, subvol->fops->lookup, - &local->loc, local->xattr_req); + subvol = dht_linkfile_subvol (this, inode, stbuf, xattr); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "linkfile not having link subvolume. path=%s", + loc->path); + dht_lookup_everywhere (frame, this, loc); + return 0; } + STACK_WIND (frame, dht_lookup_linkfile_cbk, + subvol, subvol->fops->lookup, + &local->loc, local->xattr_req); + return 0; out: - DHT_STACK_UNWIND (frame, op_ret, op_errno, inode, stbuf, xattr); + /* + * FIXME: postparent->ia_size and postparent->st_blocks do not have + * correct values. since, postparent corresponds to a directory these + * two members should have values equal to sum of corresponding values + * from each of the subvolume. See dht_iatt_merge for reference. + */ + + if (!op_ret && local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + postparent, 1); + } + + DHT_STRIP_PHASE1_FLAGS (stbuf); + DHT_STACK_UNWIND (lookup, frame, op_ret, op_errno, inode, stbuf, xattr, + postparent); +err: return 0; } +/* For directories, check if acl xattrs have been requested (by the acl xlator), + * if not, request for them. These xattrs are needed for dht dir self-heal to + * perform proper self-healing of dirs + */ +void +dht_check_and_set_acl_xattr_req (inode_t *inode, dict_t *xattr_req) +{ + int ret = 0; + + GF_ASSERT (inode); + GF_ASSERT (xattr_req); + + if (inode->ia_type != IA_IFDIR) + return; + + if (!dict_get (xattr_req, POSIX_ACL_ACCESS_XATTR)) { + ret = dict_set_int8 (xattr_req, POSIX_ACL_ACCESS_XATTR, 0); + if (ret) + gf_log (THIS->name, GF_LOG_WARNING, + "failed to set key %s", + POSIX_ACL_ACCESS_XATTR); + } + + if (!dict_get (xattr_req, POSIX_ACL_DEFAULT_XATTR)) { + ret = dict_set_int8 (xattr_req, POSIX_ACL_DEFAULT_XATTR, 0); + if (ret) + gf_log (THIS->name, GF_LOG_WARNING, + "failed to set key %s", + POSIX_ACL_DEFAULT_XATTR); + } + + return; +} int dht_lookup (call_frame_t *frame, xlator_t *this, @@ -717,56 +1402,68 @@ dht_lookup (call_frame_t *frame, xlator_t *this, { xlator_t *subvol = NULL; xlator_t *hashed_subvol = NULL; - xlator_t *cached_subvol = NULL; dht_local_t *local = NULL; - dht_conf_t *conf = NULL; + dht_conf_t *conf = NULL; int ret = -1; int op_errno = -1; - dht_layout_t *layout = NULL; - int i = 0; - int call_cnt = 0; - + dht_layout_t *layout = NULL; + int i = 0; + int call_cnt = 0; + loc_t new_loc = {0,}; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); - - conf = this->private; - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + conf = this->private; + if (!conf) + goto err; - ret = loc_dup (loc, &local->loc); - if (ret == -1) { - op_errno = errno; - gf_log (this->name, GF_LOG_DEBUG, - "copying location failed for path=%s", - loc->path); + local = dht_local_init (frame, loc, NULL, GF_FOP_LOOKUP); + if (!local) { + op_errno = ENOMEM; goto err; } - - if (xattr_req) { - local->xattr_req = dict_ref (xattr_req); - } else { - local->xattr_req = dict_new (); - } - hashed_subvol = dht_subvol_get_hashed (this, loc); - cached_subvol = dht_subvol_get_cached (this, loc->inode); + ret = dht_filter_loc_subvol_key (this, loc, &new_loc, + &hashed_subvol); + if (ret) { + loc_wipe (&local->loc); + ret = loc_dup (&new_loc, &local->loc); - local->cached_subvol = cached_subvol; - local->hashed_subvol = hashed_subvol; + /* we no more need 'new_loc' entries */ + loc_wipe (&new_loc); - if (is_revalidate (loc)) { - layout = dht_layout_get (this, loc->inode); + /* check if loc_dup() is successful */ + if (ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_DEBUG, + "copying location failed for path=%s", + loc->path); + goto err; + } + } + if (xattr_req) { + local->xattr_req = dict_ref (xattr_req); + } else { + local->xattr_req = dict_new (); + } + + if (uuid_is_null (loc->pargfid) && !uuid_is_null (loc->gfid) && + !__is_root_gfid (loc->inode->gfid)) { + local->cached_subvol = NULL; + dht_discover (frame, this, loc); + return 0; + } + + if (!hashed_subvol) + hashed_subvol = dht_subvol_get_hashed (this, loc); + local->hashed_subvol = hashed_subvol; + + if (is_revalidate (loc)) { + layout = local->layout; if (!layout) { gf_log (this->name, GF_LOG_DEBUG, "revalidate without cache. path=%s", @@ -775,67 +1472,93 @@ dht_lookup (call_frame_t *frame, xlator_t *this, goto err; } - if (layout->gen && (layout->gen < conf->gen)) { - gf_log (this->name, GF_LOG_TRACE, - "incomplete layout failure for path=%s", - loc->path); - op_errno = ESTALE; - goto err; - } + if (layout->gen && (layout->gen < conf->gen)) { + gf_log (this->name, GF_LOG_TRACE, + "incomplete layout failure for path=%s", + loc->path); + + dht_layout_unref (this, local->layout); + local->layout = NULL; + local->cached_subvol = NULL; + goto do_fresh_lookup; + } + + local->inode = inode_ref (loc->inode); + + /* NOTE: we don't require 'trusted.glusterfs.dht.linkto' attribute, + * revalidates directly go to the cached-subvolume. + */ + ret = dict_set_uint32 (local->xattr_req, + conf->xattr_name, 4 * 4); + + if (IA_ISDIR (local->inode->ia_type)) { + local->call_cnt = call_cnt = conf->subvolume_cnt; + for (i = 0; i < call_cnt; i++) { + STACK_WIND (frame, dht_revalidate_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->lookup, + loc, local->xattr_req); + } + return 0; + } + + call_cnt = local->call_cnt = layout->cnt; + + /* need it for self-healing linkfiles which is + 'in-migration' state */ + ret = dict_set_uint32 (local->xattr_req, + GLUSTERFS_OPEN_FD_COUNT, 4); - local->inode = inode_ref (loc->inode); - local->st_ino = loc->inode->ino; - - local->call_cnt = layout->cnt; - call_cnt = local->call_cnt; - - /* NOTE: we don't require 'trusted.glusterfs.dht.linkto' attribute, - * revalidates directly go to the cached-subvolume. - */ - ret = dict_set_uint32 (local->xattr_req, - "trusted.glusterfs.dht", 4 * 4); - - for (i = 0; i < layout->cnt; i++) { + /* need it for dir self-heal */ + dht_check_and_set_acl_xattr_req (loc->inode, local->xattr_req); + + for (i = 0; i < call_cnt; i++) { subvol = layout->list[i].xlator; - + STACK_WIND (frame, dht_revalidate_cbk, subvol, subvol->fops->lookup, - loc, local->xattr_req); + &local->loc, local->xattr_req); - if (!--call_cnt) - break; } } else { - /* TODO: remove the hard-coding */ - ret = dict_set_uint32 (local->xattr_req, - "trusted.glusterfs.dht", 4 * 4); + do_fresh_lookup: + /* TODO: remove the hard-coding */ + ret = dict_set_uint32 (local->xattr_req, + conf->xattr_name, 4 * 4); + + ret = dict_set_uint32 (local->xattr_req, + conf->link_xattr_name, 256); + + /* need it for self-healing linkfiles which is + 'in-migration' state */ + ret = dict_set_uint32 (local->xattr_req, + GLUSTERFS_OPEN_FD_COUNT, 4); - ret = dict_set_uint32 (local->xattr_req, - "trusted.glusterfs.dht.linkto", 256); + /* need it for dir self-heal */ + dht_check_and_set_acl_xattr_req (loc->inode, local->xattr_req); if (!hashed_subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume in layout for path=%s, " - "checking on all the subvols to see if " - "it is a directory", loc->path); - call_cnt = conf->subvolume_cnt; - local->call_cnt = call_cnt; - - local->layout = dht_layout_new (this, conf->subvolume_cnt); - if (!local->layout) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - for (i = 0; i < call_cnt; i++) { - STACK_WIND (frame, dht_lookup_dir_cbk, - conf->subvolumes[i], - conf->subvolumes[i]->fops->lookup, - &local->loc, local->xattr_req); - } - return 0; + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s, " + "checking on all the subvols to see if " + "it is a directory", loc->path); + call_cnt = conf->subvolume_cnt; + local->call_cnt = call_cnt; + + local->layout = dht_layout_new (this, + conf->subvolume_cnt); + if (!local->layout) { + op_errno = ENOMEM; + goto err; + } + + for (i = 0; i < call_cnt; i++) { + STACK_WIND (frame, dht_lookup_dir_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->lookup, + &local->loc, local->xattr_req); + } + return 0; } STACK_WIND (frame, dht_lookup_cbk, @@ -846,1314 +1569,1660 @@ dht_lookup (call_frame_t *frame, xlator_t *this, return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (lookup, frame, -1, op_errno, NULL, NULL, NULL, + NULL); return 0; } int -dht_attr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, struct stat *stbuf) +dht_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - dht_local_t *local = NULL; - int this_call_cnt = 0; - call_frame_t *prev = NULL; + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + local = frame->local; + prev = cookie; - local = frame->local; - prev = cookie; - - LOCK (&frame->lock); - { - if (op_ret == -1) { - local->op_errno = op_errno; - gf_log (this->name, GF_LOG_DEBUG, - "subvolume %s returned -1 (%s)", - prev->this->name, strerror (op_errno)); - goto unlock; - } + LOCK (&frame->lock); + { + if (op_ret == -1) { + local->op_ret = -1; + local->op_errno = op_errno; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + goto unlock; + } - dht_stat_merge (this, &local->stbuf, stbuf, prev->this); - - if (local->inode) - local->stbuf.st_ino = local->inode->ino; - local->op_ret = 0; - } + local->op_ret = 0; + + local->postparent = *postparent; + local->preparent = *preparent; + + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + &local->preparent, 0); + dht_inode_ctx_time_update (local->loc.parent, this, + &local->postparent, 1); + } + } unlock: - UNLOCK (&frame->lock); + UNLOCK (&frame->lock); - this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf); + DHT_STACK_UNWIND (unlink, frame, local->op_ret, local->op_errno, + &local->preparent, &local->postparent, NULL); return 0; } int -dht_stat (call_frame_t *frame, xlator_t *this, - loc_t *loc) +dht_unlink_linkfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - xlator_t *subvol = NULL; - int op_errno = -1; - dht_local_t *local = NULL; - dht_layout_t *layout = NULL; - int i = 0; + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + xlator_t *cached_subvol = NULL; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + local = frame->local; + prev = cookie; - layout = dht_layout_get (this, loc->inode); - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no layout for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + LOCK (&frame->lock); + { + if ((op_ret == -1) && !((op_errno == ENOENT) || + (op_errno == ENOTCONN))) { + local->op_errno = op_errno; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + goto unlock; + } - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + local->op_ret = 0; + } +unlock: + UNLOCK (&frame->lock); - local->inode = inode_ref (loc->inode); - local->call_cnt = layout->cnt; + if (local->op_ret == -1) + goto err; - for (i = 0; i < layout->cnt; i++) { - subvol = layout->list[i].xlator; + cached_subvol = dht_subvol_get_cached (this, local->loc.inode); + if (!cached_subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", + local->loc.path); + local->op_errno = EINVAL; + goto err; + } - STACK_WIND (frame, dht_attr_cbk, - subvol, subvol->fops->stat, - loc); - } + STACK_WIND (frame, dht_unlink_cbk, + cached_subvol, cached_subvol->fops->unlink, + &local->loc, local->flags, NULL); - return 0; + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); - - return 0; + DHT_STACK_UNWIND (unlink, frame, -1, local->op_errno, + NULL, NULL, NULL); + return 0; } - int -dht_fstat (call_frame_t *frame, xlator_t *this, - fd_t *fd) +dht_err_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xdata) { - xlator_t *subvol = NULL; - int op_errno = -1; - dht_local_t *local = NULL; - dht_layout_t *layout = NULL; - int i = 0; - - - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); - - layout = dht_layout_get (this, fd->inode); - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no layout for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + dht_local_t *local = NULL; + int this_call_cnt = 0; + call_frame_t *prev = NULL; - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + local = frame->local; + prev = cookie; - local->inode = inode_ref (fd->inode); - local->call_cnt = layout->cnt;; + LOCK (&frame->lock); + { + if (op_ret == -1) { + local->op_errno = op_errno; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + goto unlock; + } - for (i = 0; i < layout->cnt; i++) { - subvol = layout->list[i].xlator; - STACK_WIND (frame, dht_attr_cbk, - subvol, subvol->fops->fstat, - fd); - } + local->op_ret = 0; + } +unlock: + UNLOCK (&frame->lock); - return 0; + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + DHT_STACK_UNWIND (setxattr, frame, local->op_ret, + local->op_errno, NULL); + } -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + return 0; +} - return 0; +static void +fill_layout_info (dht_layout_t *layout, char *buf) +{ + int i = 0; + char tmp_buf[128] = {0,}; + + for (i = 0; i < layout->cnt; i++) { + snprintf (tmp_buf, 128, "(%s %u %u)", + layout->list[i].xlator->name, + layout->list[i].start, + layout->list[i].stop); + if (i) + strcat (buf, " "); + strcat (buf, tmp_buf); + } } +void +dht_fill_pathinfo_xattr (xlator_t *this, dht_local_t *local, + char *xattr_buf, int32_t alloc_len, + int flag, char *layout_buf) +{ + if (flag && local->xattr_val) + snprintf (xattr_buf, alloc_len, + "((<"DHT_PATHINFO_HEADER"%s> %s) (%s-layout %s))", + this->name, local->xattr_val, this->name, + layout_buf); + else if (local->xattr_val) + snprintf (xattr_buf, alloc_len, + "(<"DHT_PATHINFO_HEADER"%s> %s)", + this->name, local->xattr_val); + else if (flag) + snprintf (xattr_buf, alloc_len, "(%s-layout %s)", + this->name, layout_buf); +} int -dht_chmod (call_frame_t *frame, xlator_t *this, - loc_t *loc, mode_t mode) +dht_vgetxattr_alloc_and_fill (dht_local_t *local, dict_t *xattr, xlator_t *this, + int op_errno) { - dht_layout_t *layout = NULL; - dht_local_t *local = NULL; - int op_errno = -1; - int i = -1; + int ret = -1; + char *value = NULL; + int32_t plen = 0; + ret = dict_get_str (xattr, local->xsel, &value); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Subvolume %s returned -1 (%s)", this->name, + strerror (op_errno)); + local->op_ret = -1; + local->op_errno = op_errno; + goto out; + } - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + local->alloc_len += strlen(value); - layout = dht_layout_get (this, loc->inode); + if (!local->xattr_val) { + local->alloc_len += (strlen (DHT_PATHINFO_HEADER) + 10); + local->xattr_val = GF_CALLOC (local->alloc_len, sizeof (char), + gf_common_mt_char); + if (!local->xattr_val) { + ret = -1; + goto out; + } + } - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no layout for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + if (local->xattr_val) { + plen = strlen (local->xattr_val); + if (plen) { + /* extra byte(s) for \0 to be safe */ + local->alloc_len += (plen + 2); + local->xattr_val = GF_REALLOC (local->xattr_val, + local->alloc_len); + if (!local->xattr_val) { + ret = -1; + goto out; + } + } - if (!layout_is_sane (layout)) { - gf_log (this->name, GF_LOG_DEBUG, - "layout is not sane for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + (void) strcat (local->xattr_val, value); + (void) strcat (local->xattr_val, " "); + local->op_ret = 0; + } - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_DEBUG, - "memory allocation failed :("); - goto err; - } + ret = 0; - local->inode = inode_ref (loc->inode); - local->call_cnt = layout->cnt; + out: + return ret; +} - for (i = 0; i < layout->cnt; i++) { - STACK_WIND (frame, dht_attr_cbk, - layout->list[i].xlator, - layout->list[i].xlator->fops->chmod, - loc, mode); - } +int +dht_vgetxattr_fill_and_set (dht_local_t *local, dict_t **dict, xlator_t *this, + gf_boolean_t flag) +{ + int ret = -1; + char *xattr_buf = NULL; + char layout_buf[8192] = {0,}; - return 0; + if (flag) + fill_layout_info (local->layout, layout_buf); -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + *dict = dict_new (); + if (!*dict) + goto out; - return 0; -} + local->xattr_val[strlen (local->xattr_val) - 1] = '\0'; + + /* we would need max this many bytes to create xattr string + * extra 40 bytes is just an estimated amount of additional + * space required as we include translator name and some + * spaces, brackets etc. when forming the pathinfo string. + * + * For node-uuid we just don't have all the pretty formatting, + * but since this is a generic routine for pathinfo & node-uuid + * we dont have conditional space allocation and try to be + * generic + */ + local->alloc_len += (2 * strlen (this->name)) + + strlen (layout_buf) + + 40; + xattr_buf = GF_CALLOC (local->alloc_len, sizeof (char), + gf_common_mt_char); + if (!xattr_buf) + goto out; + + if (XATTR_IS_PATHINFO (local->xsel)) { + (void) dht_fill_pathinfo_xattr (this, local, xattr_buf, + local->alloc_len, flag, + layout_buf); + } else if (XATTR_IS_NODE_UUID (local->xsel)) { + (void) snprintf (xattr_buf, local->alloc_len, "%s", + local->xattr_val); + } else { + gf_log (this->name, GF_LOG_WARNING, + "Unknown local->xsel (%s)", local->xsel); + goto out; + } + + ret = dict_set_dynstr (*dict, local->xsel, xattr_buf); + GF_FREE (local->xattr_val); + out: + return ret; +} int -dht_chown (call_frame_t *frame, xlator_t *this, - loc_t *loc, uid_t uid, gid_t gid) +dht_vgetxattr_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xattr, dict_t *xdata) { - dht_layout_t *layout = NULL; - dht_local_t *local = NULL; - int op_errno = -1; - int i = -1; + int ret = 0; + dht_local_t *local = NULL; + int this_call_cnt = 0; + dict_t *dict = NULL; + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (frame->local, out); - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + local = frame->local; - layout = dht_layout_get (this, loc->inode); - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no layout for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + LOCK (&frame->lock); + { + this_call_cnt = --local->call_cnt; + if (op_ret < 0) { + if (op_errno != ENOTCONN) { + gf_log (this->name, GF_LOG_ERROR, + "getxattr err (%s) for dir", + strerror (op_errno)); + local->op_ret = -1; + local->op_errno = op_errno; + } - if (!layout_is_sane (layout)) { - gf_log (this->name, GF_LOG_DEBUG, - "layout is not sane for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + goto unlock; + } - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + ret = dht_vgetxattr_alloc_and_fill (local, xattr, this, + op_errno); + if (ret) + gf_log (this->name, GF_LOG_ERROR, + "alloc or fill failure"); + } + unlock: + UNLOCK (&frame->lock); - local->inode = inode_ref (loc->inode); - local->call_cnt = layout->cnt; + if (!is_last_call (this_call_cnt)) + goto out; - for (i = 0; i < layout->cnt; i++) { - STACK_WIND (frame, dht_attr_cbk, - layout->list[i].xlator, - layout->list[i].xlator->fops->chown, - loc, uid, gid); - } + /* -- last call: do patch ups -- */ - return 0; + if (local->op_ret == -1) { + goto unwind; + } -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + ret = dht_vgetxattr_fill_and_set (local, &dict, this, _gf_true); + if (ret) + goto unwind; - return 0; -} + DHT_STACK_UNWIND (getxattr, frame, 0, 0, dict, xdata); + goto cleanup; + unwind: + DHT_STACK_UNWIND (getxattr, frame, -1, local->op_errno, NULL, NULL); + cleanup: + if (dict) + dict_unref (dict); + out: + return 0; +} int -dht_fchmod (call_frame_t *frame, xlator_t *this, - fd_t *fd, mode_t mode) +dht_vgetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xattr, dict_t *xdata) { - dht_layout_t *layout = NULL; - dht_local_t *local = NULL; - int op_errno = -1; - int i = -1; - - - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); - + dht_local_t *local = NULL; + int ret = 0; + dict_t *dict = NULL; + call_frame_t *prev = NULL; + gf_boolean_t flag = _gf_true; - layout = dht_layout_get (this, fd->inode); - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no layout for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + local = frame->local; + prev = cookie; - if (!layout_is_sane (layout)) { - gf_log (this->name, GF_LOG_DEBUG, - "layout is not sane for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + if (op_ret < 0) { + local->op_ret = -1; + local->op_errno = op_errno; + gf_log (this->name, GF_LOG_ERROR, "Subvolume %s returned -1 " + "(%s)", prev->this->name, strerror (op_errno)); + goto unwind; + } - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + ret = dht_vgetxattr_alloc_and_fill (local, xattr, this, + op_errno); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "alloc or fill failure"); + goto unwind; + } - local->inode = inode_ref (fd->inode); - local->call_cnt = layout->cnt; + flag = (local->layout->cnt > 1) ? _gf_true : _gf_false; - for (i = 0; i < layout->cnt; i++) { - STACK_WIND (frame, dht_attr_cbk, - layout->list[i].xlator, - layout->list[i].xlator->fops->fchmod, - fd, mode); - } + ret = dht_vgetxattr_fill_and_set (local, &dict, this, flag); + if (ret) + goto unwind; - return 0; + DHT_STACK_UNWIND (getxattr, frame, 0, 0, dict, xdata); + goto cleanup; -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + unwind: + DHT_STACK_UNWIND (getxattr, frame, -1, local->op_errno, + NULL, NULL); + cleanup: + if (dict) + dict_unref (dict); - return 0; + return 0; } - int -dht_fchown (call_frame_t *frame, xlator_t *this, - fd_t *fd, uid_t uid, gid_t gid) +dht_linkinfo_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xattr, + dict_t *xdata) { - dht_layout_t *layout = NULL; - dht_local_t *local = NULL; - int op_errno = -1; - int i = -1; + int ret = 0; + char *value = NULL; + + if (op_ret != -1) { + ret = dict_get_str (xattr, GF_XATTR_PATHINFO_KEY, &value); + if (!ret) { + ret = dict_set_str (xattr, GF_XATTR_LINKINFO_KEY, value); + if (!ret) + gf_log (this->name, GF_LOG_TRACE, + "failed to set linkinfo"); + } + } + DHT_STACK_UNWIND (getxattr, frame, op_ret, op_errno, xattr, xdata); - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); + return 0; +} - layout = dht_layout_get (this, fd->inode); - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no layout for fd=%p", fd); - op_errno = EINVAL; - goto err; - } +int +dht_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xattr, dict_t *xdata) +{ + int this_call_cnt = 0; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; - if (!layout_is_sane (layout)) { - gf_log (this->name, GF_LOG_DEBUG, - "layout is not sane for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (frame->local, out); + VALIDATE_OR_GOTO (this->private, out); - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + conf = this->private; + local = frame->local; - local->inode = inode_ref (fd->inode); - local->call_cnt = layout->cnt; + this_call_cnt = dht_frame_return (frame); - for (i = 0; i < layout->cnt; i++) { - STACK_WIND (frame, dht_attr_cbk, - layout->list[i].xlator, - layout->list[i].xlator->fops->fchown, - fd, uid, gid); - } + if (!xattr || (op_ret == -1)) + goto out; - return 0; + if (dict_get (xattr, conf->xattr_name)) { + dict_del (xattr, conf->xattr_name); + } + local->op_ret = 0; -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + if (!local->xattr) { + local->xattr = dict_copy_with_ref (xattr, NULL); + } else { + /* first aggregate everything into xattr and then copy into + * local->xattr. This is required as we want to have + * 'local->xattr' as the proper final dictionary passed above + * distribute xlator. + */ + dht_aggregate_xattr (xattr, local->xattr); + local->xattr = dict_copy (xattr, local->xattr); + } +out: + if (is_last_call (this_call_cnt)) { + DHT_STACK_UNWIND (getxattr, frame, local->op_ret, op_errno, + local->xattr, NULL); + } + return 0; +} - return 0; +int32_t +dht_getxattr_unwind (call_frame_t *frame, + int op_ret, int op_errno, dict_t *dict, dict_t *xdata) +{ + DHT_STACK_UNWIND (getxattr, frame, op_ret, op_errno, dict, xdata); + return 0; } int -dht_utimens (call_frame_t *frame, xlator_t *this, - loc_t *loc, struct timespec tv[2]) +dht_getxattr_get_real_filename_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int op_ret, int op_errno, + dict_t *xattr, dict_t *xdata) { - dht_layout_t *layout = NULL; - dht_local_t *local = NULL; - int op_errno = -1; - int i = -1; + int this_call_cnt = 0; + dht_local_t *local = NULL; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + local = frame->local; - layout = dht_layout_get (this, loc->inode); - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no layout for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + if (op_ret != -1) { + if (local->xattr) + dict_unref (local->xattr); + local->xattr = dict_ref (xattr); - if (!layout_is_sane (layout)) { - gf_log (this->name, GF_LOG_DEBUG, - "layout is not sane for path=%s", loc->path); - op_errno = EINVAL; - goto err; + if (local->xattr_req) + dict_unref (local->xattr_req); + local->xattr_req = dict_ref (xdata); } - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + DHT_STACK_UNWIND (getxattr, frame, local->op_ret, op_errno, + local->xattr, local->xattr_req); } - local->inode = inode_ref (loc->inode); - local->call_cnt = layout->cnt; + return 0; +} - for (i = 0; i < layout->cnt; i++) { - STACK_WIND (frame, dht_attr_cbk, - layout->list[i].xlator, - layout->list[i].xlator->fops->utimens, - loc, tv); - } - return 0; +int +dht_getxattr_get_real_filename (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *key, dict_t *xdata) +{ + dht_local_t *local = NULL; + int i = 0; + dht_layout_t *layout = NULL; + int cnt = 0; + xlator_t *subvol = NULL; -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + + local = frame->local; + layout = local->layout; + + cnt = local->call_cnt = layout->cnt; + + local->op_ret = -1; + local->op_errno = ENODATA; + + for (i = 0; i < cnt; i++) { + subvol = layout->list[i].xlator; + STACK_WIND (frame, dht_getxattr_get_real_filename_cbk, + subvol, subvol->fops->getxattr, + loc, key, xdata); + } return 0; } int -dht_truncate (call_frame_t *frame, xlator_t *this, - loc_t *loc, off_t offset) +dht_getxattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *key, dict_t *xdata) +#define DHT_IS_DIR(layout) (layout->cnt > 1) { - xlator_t *subvol = NULL; - int op_errno = -1; - dht_local_t *local = NULL; + xlator_t *subvol = NULL; + xlator_t *hashed_subvol = NULL; + xlator_t *cached_subvol = NULL; + dht_conf_t *conf = NULL; + dht_local_t *local = NULL; + dht_layout_t *layout = NULL; + xlator_t **sub_volumes = NULL; + int op_errno = -1; + int i = 0; + int cnt = 0; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); - - subvol = dht_subvol_get_cached (this, loc->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + VALIDATE_OR_GOTO (this->private, err); - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - local->inode = inode_ref (loc->inode); - local->call_cnt = 1; + conf = this->private; - STACK_WIND (frame, dht_attr_cbk, - subvol, subvol->fops->truncate, - loc, offset); + local = dht_local_init (frame, loc, NULL, GF_FOP_GETXATTR); + if (!local) { + op_errno = ENOMEM; - return 0; + goto err; + } -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + layout = local->layout; + if (!layout) { + gf_log (this->name, GF_LOG_ERROR, + "layout is NULL"); + op_errno = ENOENT; + goto err; + } - return 0; -} + if (key) { + local->key = gf_strdup (key); + if (!local->key) { + op_errno = ENOMEM; + goto err; + } + } + if (key && + (strncmp (key, GF_XATTR_GET_REAL_FILENAME_KEY, + strlen (GF_XATTR_GET_REAL_FILENAME_KEY)) == 0) + && DHT_IS_DIR(layout)) { + dht_getxattr_get_real_filename (frame, this, loc, key, xdata); + return 0; + } -int -dht_ftruncate (call_frame_t *frame, xlator_t *this, - fd_t *fd, off_t offset) -{ - xlator_t *subvol = NULL; - int op_errno = -1; - dht_local_t *local = NULL; + /* for file use cached subvolume (obviously!): see if {} + * below + * for directory: + * wind to all subvolumes and exclude subvolumes which + * return ENOTCONN (in callback) + * + * NOTE: Don't trust inode here, as that may not be valid + * (until inode_link() happens) + */ + if (key && DHT_IS_DIR(layout) && + ((strcmp (key, GF_XATTR_PATHINFO_KEY) == 0) + || (strcmp (key, GF_XATTR_NODE_UUID_KEY) == 0))) { + (void) strncpy (local->xsel, key, 256); + cnt = local->call_cnt = layout->cnt; + for (i = 0; i < cnt; i++) { + subvol = layout->list[i].xlator; + STACK_WIND (frame, dht_vgetxattr_dir_cbk, + subvol, subvol->fops->getxattr, + loc, key, NULL); + } + return 0; + } + /* node-uuid or pathinfo for files */ + if (key && ((strcmp (key, GF_XATTR_NODE_UUID_KEY) == 0) + || (strcmp (key, GF_XATTR_PATHINFO_KEY) == 0))) { + cached_subvol = local->cached_subvol; + (void) strncpy (local->xsel, key, 256); - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); + local->call_cnt = 1; + STACK_WIND (frame, dht_vgetxattr_cbk, cached_subvol, + cached_subvol->fops->getxattr, loc, key, NULL); - subvol = dht_subvol_get_cached (this, fd->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + return 0; + } - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + if (key && (strcmp (key, GF_XATTR_LINKINFO_KEY) == 0)) { + hashed_subvol = dht_subvol_get_hashed (this, loc); + if (!hashed_subvol) { + gf_log (this->name, GF_LOG_ERROR, "Failed to get" + "hashed subvol for %s", loc->path); + op_errno = EINVAL; + goto err; + } - local->inode = inode_ref (fd->inode); - local->call_cnt = 1; + cached_subvol = dht_subvol_get_cached (this, loc->inode); + if (!cached_subvol) { + gf_log (this->name, GF_LOG_ERROR, "Failed to get" + "cached subvol for %s", loc->path); + op_errno = EINVAL; + goto err; + } - STACK_WIND (frame, dht_attr_cbk, - subvol, subvol->fops->ftruncate, - fd, offset); + if (hashed_subvol == cached_subvol) { + op_errno = ENODATA; + goto err; + } + if (hashed_subvol) { + STACK_WIND (frame, dht_linkinfo_getxattr_cbk, hashed_subvol, + hashed_subvol->fops->getxattr, loc, + GF_XATTR_PATHINFO_KEY, NULL); + return 0; + } + op_errno = ENODATA; + goto err; + } - return 0; + if (key && (!strcmp (GF_XATTR_MARKER_KEY, key)) + && (GF_CLIENT_PID_GSYNCD == frame->root->pid)) { + if (DHT_IS_DIR(layout)) { + cnt = layout->cnt; + } else { + cnt = 1; + } -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + sub_volumes = alloca ( cnt * sizeof (xlator_t *)); + for (i = 0; i < cnt; i++) + *(sub_volumes + i) = layout->list[i].xlator; - return 0; -} + if (cluster_getmarkerattr (frame, this, loc, key, + local, dht_getxattr_unwind, + sub_volumes, cnt, + MARKER_UUID_TYPE, marker_uuid_default_gauge, + conf->vol_uuid)) { + op_errno = EINVAL; + goto err; + } + return 0; + } -int -dht_err_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno) -{ - dht_local_t *local = NULL; - int this_call_cnt = 0; - call_frame_t *prev = NULL; + if (key && *conf->vol_uuid) { + if ((match_uuid_local (key, conf->vol_uuid) == 0) && + (GF_CLIENT_PID_GSYNCD == frame->root->pid)) { + if (DHT_IS_DIR(layout)) { + cnt = layout->cnt; + } else { + cnt = 1; + } + sub_volumes = alloca ( cnt * sizeof (xlator_t *)); + for (i = 0; i < cnt; i++) + sub_volumes[i] = layout->list[i].xlator; + + if (cluster_getmarkerattr (frame, this, loc, key, + local, dht_getxattr_unwind, + sub_volumes, cnt, + MARKER_XTIME_TYPE, + marker_xtime_default_gauge, + conf->vol_uuid)) { + op_errno = EINVAL; + goto err; + } + return 0; + } + } - local = frame->local; - prev = cookie; - - LOCK (&frame->lock); - { - if (op_ret == -1) { - local->op_errno = op_errno; - gf_log (this->name, GF_LOG_DEBUG, - "subvolume %s returned -1 (%s)", - prev->this->name, strerror (op_errno)); - goto unlock; - } + if (DHT_IS_DIR(layout)) { + cnt = local->call_cnt = layout->cnt; + } else { + cnt = local->call_cnt = 1; + } - local->op_ret = 0; - } -unlock: - UNLOCK (&frame->lock); + for (i = 0; i < cnt; i++) { + subvol = layout->list[i].xlator; + STACK_WIND (frame, dht_getxattr_cbk, + subvol, subvol->fops->getxattr, + loc, key, NULL); + } + return 0; - this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno); +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (getxattr, frame, -1, op_errno, NULL, NULL); return 0; } - +#undef DHT_IS_DIR int -dht_access (call_frame_t *frame, xlator_t *this, - loc_t *loc, int32_t mask) +dht_fgetxattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, const char *key, dict_t *xdata) { - xlator_t *subvol = NULL; - int op_errno = -1; - dht_local_t *local = NULL; - + xlator_t *subvol = NULL; + dht_local_t *local = NULL; + dht_layout_t *layout = NULL; + int op_errno = -1; + int i = 0; + int cnt = 0; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + VALIDATE_OR_GOTO (this->private, err); - subvol = dht_subvol_get_cached (this, loc->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + local = dht_local_init (frame, NULL, fd, GF_FOP_FGETXATTR); + if (!local) { + op_errno = ENOMEM; - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + goto err; + } - local->call_cnt = 1; + layout = local->layout; + if (!layout) { + gf_log (this->name, GF_LOG_ERROR, + "layout is NULL"); + op_errno = ENOENT; + goto err; + } - STACK_WIND (frame, dht_err_cbk, - subvol, subvol->fops->access, - loc, mask); + if (key) { + local->key = gf_strdup (key); + if (!local->key) { + op_errno = ENOMEM; + goto err; + } + } - return 0; + if ((fd->inode->ia_type == IA_IFDIR) + && (strncmp (key, GF_XATTR_LOCKINFO_KEY, + strlen (GF_XATTR_LOCKINFO_KEY) != 0))) { + cnt = local->call_cnt = layout->cnt; + } else { + cnt = local->call_cnt = 1; + } + + for (i = 0; i < cnt; i++) { + subvol = layout->list[i].xlator; + STACK_WIND (frame, dht_getxattr_cbk, + subvol, subvol->fops->fgetxattr, + fd, key, NULL); + } + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (fgetxattr, frame, -1, op_errno, NULL, NULL); - return 0; + return 0; } - int -dht_readlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, const char *path) +dht_fsetxattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, dict_t *xattr, int flags, dict_t *xdata) { - DHT_STACK_UNWIND (frame, op_ret, op_errno, path); + xlator_t *subvol = NULL; + dht_local_t *local = NULL; + int op_errno = EINVAL; + dht_conf_t *conf = NULL; - return 0; -} + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + VALIDATE_OR_GOTO (this->private, err); + conf = this->private; -int -dht_readlink (call_frame_t *frame, xlator_t *this, - loc_t *loc, size_t size) -{ - xlator_t *subvol = NULL; - int op_errno = -1; + GF_IF_INTERNAL_XATTR_GOTO (conf->wild_xattr_name, xattr, + op_errno, err); + local = dht_local_init (frame, NULL, fd, GF_FOP_FSETXATTR); + if (!local) { + op_errno = ENOMEM; + goto err; + } - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } - subvol = dht_subvol_get_cached (this, loc->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + local->call_cnt = 1; - STACK_WIND (frame, dht_readlink_cbk, - subvol, subvol->fops->readlink, - loc, size); + STACK_WIND (frame, dht_err_cbk, subvol, subvol->fops->fsetxattr, + fd, xattr, flags, NULL); - return 0; + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (fsetxattr, frame, -1, op_errno, NULL); - return 0; + return 0; } -int -dht_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, dict_t *xattr) +static int +dht_common_setxattr_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *xdata) { - DHT_STACK_UNWIND (frame, op_ret, op_errno, xattr); + DHT_STACK_UNWIND (setxattr, frame, op_ret, op_errno, xdata); return 0; } - int -dht_getxattr (call_frame_t *frame, xlator_t *this, - loc_t *loc, const char *key) +dht_checking_pathinfo_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xattr, + dict_t *xdata) { - xlator_t *subvol = NULL; - int op_errno = -1; + int i = -1; + int ret = -1; + char *value = NULL; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; + call_frame_t *prev = NULL; + int this_call_cnt = 0; + local = frame->local; + prev = cookie; + conf = this->private; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + if (op_ret == -1) + goto out; - subvol = dht_subvol_get_cached (this, loc->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } - STACK_WIND (frame, dht_getxattr_cbk, - subvol, subvol->fops->getxattr, - loc, key); + ret = dict_get_str (xattr, GF_XATTR_PATHINFO_KEY, &value); + if (ret) + goto out; - return 0; + if (!strcmp (value, local->key)) { + for (i = 0; i < conf->subvolume_cnt; i++) { + if (conf->subvolumes[i] == prev->this) + conf->decommissioned_bricks[i] = prev->this; + } + } -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); +out: + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + DHT_STACK_UNWIND (setxattr, frame, local->op_ret, ENOTSUP, NULL); + } + return 0; - return 0; } - int dht_setxattr (call_frame_t *frame, xlator_t *this, - loc_t *loc, dict_t *xattr, int flags) + loc_t *loc, dict_t *xattr, int flags, dict_t *xdata) { - xlator_t *subvol = NULL; - int op_errno = -1; - dht_local_t *local = NULL; - + xlator_t *subvol = NULL; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; + dht_layout_t *layout = NULL; + int i = 0; + int op_errno = EINVAL; + int ret = -1; + data_t *tmp = NULL; + uint32_t dir_spread = 0; + char value[4096] = {0,}; + gf_dht_migrate_data_type_t forced_rebalance = GF_DHT_MIGRATE_DATA; + int call_cnt = 0; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); - subvol = dht_subvol_get_cached (this, loc->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + conf = this->private; - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + GF_IF_INTERNAL_XATTR_GOTO (conf->wild_xattr_name, xattr, + op_errno, err); - local->call_cnt = 1; + local = dht_local_init (frame, loc, NULL, GF_FOP_SETXATTR); + if (!local) { + op_errno = ENOMEM; + goto err; + } - STACK_WIND (frame, dht_err_cbk, - subvol, subvol->fops->setxattr, - loc, xattr, flags); + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } - return 0; + layout = local->layout; + if (!layout) { + gf_log (this->name, GF_LOG_DEBUG, + "no layout for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + local->call_cnt = call_cnt = layout->cnt; - return 0; -} + tmp = dict_get (xattr, "distribute.migrate-data"); + if (tmp) { + if (IA_ISDIR (loc->inode->ia_type)) { + op_errno = ENOTSUP; + goto err; + } + /* TODO: need to interpret the 'value' for more meaning + (ie, 'target' subvolume given there, etc) */ + memcpy (value, tmp->data, tmp->len); + if (strcmp (value, "force") == 0) + forced_rebalance = + GF_DHT_MIGRATE_DATA_EVEN_IF_LINK_EXISTS; -int -dht_removexattr (call_frame_t *frame, xlator_t *this, - loc_t *loc, const char *key) -{ - xlator_t *subvol = NULL; - int op_errno = -1; - dht_local_t *local = NULL; + if (conf->decommission_in_progress) + forced_rebalance = GF_DHT_MIGRATE_HARDLINK; + local->rebalance.target_node = dht_subvol_get_hashed (this, loc); + if (!local->rebalance.target_node) { + gf_log (this->name, GF_LOG_ERROR, "Failed to get " + "hashed subvol for %s", loc->path); + op_errno = EINVAL; + goto err; + } - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + local->rebalance.from_subvol = local->cached_subvol; - subvol = dht_subvol_get_cached (this, loc->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + if (local->rebalance.target_node == local->rebalance.from_subvol) { + op_errno = EEXIST; + goto err; + } + if (local->rebalance.target_node) { + local->flags = forced_rebalance; - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + ret = dht_start_rebalance_task (this, frame); + if (!ret) + return 0; - local->call_cnt = 1; + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to create a new synctask", + loc->path); + } + op_errno = EINVAL; + goto err; - STACK_WIND (frame, dht_err_cbk, - subvol, subvol->fops->removexattr, - loc, key); + } - return 0; + tmp = dict_get (xattr, "decommission-brick"); + if (tmp) { + /* This operation should happen only on '/' */ + if (!__is_root_gfid (loc->inode->gfid)) { + op_errno = ENOTSUP; + goto err; + } + + memcpy (value, tmp->data, ((tmp->len < 4095) ? tmp->len : 4095)); + local->key = gf_strdup (value); + local->call_cnt = conf->subvolume_cnt; + + for (i = 0 ; i < conf->subvolume_cnt; i++) { + /* Get the pathinfo, and then compare */ + STACK_WIND (frame, dht_checking_pathinfo_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->getxattr, + loc, GF_XATTR_PATHINFO_KEY, NULL); + } + return 0; + } + + tmp = dict_get (xattr, GF_XATTR_FIX_LAYOUT_KEY); + if (tmp) { + gf_log (this->name, GF_LOG_INFO, + "fixing the layout of %s", loc->path); + + ret = dht_fix_directory_layout (frame, dht_common_setxattr_cbk, + layout); + if (ret) { + op_errno = ENOTCONN; + goto err; + } + return ret; + } + + tmp = dict_get (xattr, "distribute.directory-spread-count"); + if (tmp) { + /* Setxattr value is packed as 'binary', not string */ + memcpy (value, tmp->data, ((tmp->len < 4095)?tmp->len:4095)); + ret = gf_string2uint32 (value, &dir_spread); + if (!ret && ((dir_spread <= conf->subvolume_cnt) && + (dir_spread > 0))) { + layout->spread_cnt = dir_spread; + + ret = dht_fix_directory_layout (frame, + dht_common_setxattr_cbk, + layout); + if (ret) { + op_errno = ENOTCONN; + goto err; + } + return ret; + } + gf_log (this->name, GF_LOG_ERROR, + "wrong 'directory-spread-count' value (%s)", value); + op_errno = ENOTSUP; + goto err; + } + + for (i = 0; i < call_cnt; i++) { + STACK_WIND (frame, dht_err_cbk, + layout->list[i].xlator, + layout->list[i].xlator->fops->setxattr, + loc, xattr, flags, xdata); + } + + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (setxattr, frame, -1, op_errno, NULL); - return 0; + return 0; } int -dht_fd_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, fd_t *fd) +dht_removexattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xdata) { - dht_local_t *local = NULL; - int this_call_cnt = 0; - call_frame_t *prev = NULL; + dht_local_t *local = NULL; + int this_call_cnt = 0; + call_frame_t *prev = NULL; + local = frame->local; + prev = cookie; - local = frame->local; - prev = cookie; - - LOCK (&frame->lock); - { - if (op_ret == -1) { - local->op_errno = op_errno; - gf_log (this->name, GF_LOG_DEBUG, - "subvolume %s returned -1 (%s)", - prev->this->name, strerror (op_errno)); - goto unlock; - } + LOCK (&frame->lock); + { + if (op_ret == -1) { + local->op_errno = op_errno; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + goto unlock; + } - local->op_ret = 0; - } + local->op_ret = 0; + } unlock: - UNLOCK (&frame->lock); + UNLOCK (&frame->lock); - this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->fd); + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + DHT_STACK_UNWIND (removexattr, frame, local->op_ret, + local->op_errno, NULL); + } return 0; } int -dht_open (call_frame_t *frame, xlator_t *this, - loc_t *loc, int flags, fd_t *fd) +dht_removexattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *key, dict_t *xdata) { - xlator_t *subvol = NULL; - int ret = -1; + xlator_t *subvol = NULL; int op_errno = -1; - dht_local_t *local = NULL; + dht_local_t *local = NULL; + dht_layout_t *layout = NULL; + int call_cnt = 0; + dht_conf_t *conf = NULL; + int i; - VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (this->private, err); - subvol = dht_subvol_get_cached (this, fd->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + conf = this->private; - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + GF_IF_NATIVE_XATTR_GOTO (conf->wild_xattr_name, key, op_errno, err); - local->fd = fd_ref (fd); - ret = loc_dup (loc, &local->loc); - if (ret == -1) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); - local->call_cnt = 1; + local = dht_local_init (frame, loc, NULL, GF_FOP_REMOVEXATTR); + if (!local) { + op_errno = ENOMEM; + goto err; + } - STACK_WIND (frame, dht_fd_cbk, - subvol, subvol->fops->open, - loc, flags, fd); + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } - return 0; + layout = local->layout; + if (!local->layout) { + gf_log (this->name, GF_LOG_DEBUG, + "no layout for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + local->call_cnt = call_cnt = layout->cnt; + local->key = gf_strdup (key); - return 0; -} + for (i = 0; i < call_cnt; i++) { + STACK_WIND (frame, dht_removexattr_cbk, + layout->list[i].xlator, + layout->list[i].xlator->fops->removexattr, + loc, key, NULL); + } + return 0; -int -dht_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, - struct iovec *vector, int count, struct stat *stbuf, - struct iobref *iobref) -{ - DHT_STACK_UNWIND (frame, op_ret, op_errno, vector, count, stbuf, - iobref); +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (removexattr, frame, -1, op_errno, NULL); return 0; } - int -dht_readv (call_frame_t *frame, xlator_t *this, - fd_t *fd, size_t size, off_t off) +dht_fremovexattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, const char *key, dict_t *xdata) { - xlator_t *subvol = NULL; + xlator_t *subvol = NULL; int op_errno = -1; + dht_local_t *local = NULL; + dht_layout_t *layout = NULL; + int call_cnt = 0; + dht_conf_t *conf = 0; + int i; - VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (this->private, err); - subvol = dht_subvol_get_cached (this, fd->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + conf = this->private; - STACK_WIND (frame, dht_readv_cbk, - subvol, subvol->fops->readv, - fd, size, off); + GF_IF_NATIVE_XATTR_GOTO (conf->wild_xattr_name, key, op_errno, err); - return 0; + VALIDATE_OR_GOTO (frame, err); -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, 0, NULL, NULL); + local = dht_local_init (frame, NULL, fd, GF_FOP_FREMOVEXATTR); + if (!local) { + op_errno = ENOMEM; + goto err; + } - return 0; -} + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for inode=%s", + uuid_utoa (fd->inode->gfid)); + op_errno = EINVAL; + goto err; + } + layout = local->layout; + if (!local->layout) { + gf_log (this->name, GF_LOG_DEBUG, + "no layout for inode=%s", uuid_utoa (fd->inode->gfid)); + op_errno = EINVAL; + goto err; + } -int -dht_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, struct stat *stbuf) -{ - DHT_STACK_UNWIND (frame, op_ret, op_errno, stbuf); + local->call_cnt = call_cnt = layout->cnt; + local->key = gf_strdup (key); + + for (i = 0; i < call_cnt; i++) { + STACK_WIND (frame, dht_removexattr_cbk, + layout->list[i].xlator, + layout->list[i].xlator->fops->fremovexattr, + fd, key, NULL); + } + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (fremovexattr, frame, -1, op_errno, NULL); return 0; } int -dht_writev (call_frame_t *frame, xlator_t *this, - fd_t *fd, struct iovec *vector, int count, off_t off, - struct iobref *iobref) +dht_fd_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, fd_t *fd, dict_t *xdata) { - xlator_t *subvol = NULL; - int op_errno = -1; + dht_local_t *local = NULL; + int this_call_cnt = 0; + call_frame_t *prev = NULL; + local = frame->local; + prev = cookie; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); + LOCK (&frame->lock); + { + if (op_ret == -1) { + local->op_errno = op_errno; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + goto unlock; + } - subvol = dht_subvol_get_cached (this, fd->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + local->op_ret = 0; + } +unlock: + UNLOCK (&frame->lock); - STACK_WIND (frame, dht_writev_cbk, - subvol, subvol->fops->writev, - fd, vector, count, off, iobref); + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) + DHT_STACK_UNWIND (open, frame, local->op_ret, local->op_errno, + local->fd, NULL); - return 0; + return 0; +} -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, 0); +/* + * dht_normalize_stats - + */ +static void +dht_normalize_stats (struct statvfs *buf, unsigned long bsize, + unsigned long frsize) +{ + double factor = 0; - return 0; -} + if (buf->f_bsize != bsize) { + buf->f_bsize = bsize; + } + if (buf->f_frsize != frsize) { + factor = ((double) buf->f_frsize) / frsize; + buf->f_frsize = frsize; + buf->f_blocks = (fsblkcnt_t) (factor * buf->f_blocks); + buf->f_bfree = (fsblkcnt_t) (factor * buf->f_bfree); + buf->f_bavail = (fsblkcnt_t) (factor * buf->f_bavail); + + } +} int -dht_flush (call_frame_t *frame, xlator_t *this, fd_t *fd) +dht_statfs_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct statvfs *statvfs, dict_t *xdata) { - xlator_t *subvol = NULL; - int op_errno = -1; - dht_local_t *local = NULL; + dht_local_t *local = NULL; + int this_call_cnt = 0; + int bsize = 0; + int frsize = 0; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); + local = frame->local; - subvol = dht_subvol_get_cached (this, fd->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + LOCK (&frame->lock); + { + if (op_ret == -1) { + local->op_errno = op_errno; + goto unlock; + } + local->op_ret = 0; - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + if (local->statvfs.f_bsize != 0) { + bsize = max(local->statvfs.f_bsize, statvfs->f_bsize); + frsize = max(local->statvfs.f_frsize, statvfs->f_frsize); + dht_normalize_stats(&local->statvfs, bsize, frsize); + dht_normalize_stats(statvfs, bsize, frsize); + } else { + local->statvfs.f_bsize = statvfs->f_bsize; + local->statvfs.f_frsize = statvfs->f_frsize; + } - local->fd = fd_ref (fd); - local->call_cnt = 1; + local->statvfs.f_blocks += statvfs->f_blocks; + local->statvfs.f_bfree += statvfs->f_bfree; + local->statvfs.f_bavail += statvfs->f_bavail; + local->statvfs.f_files += statvfs->f_files; + local->statvfs.f_ffree += statvfs->f_ffree; + local->statvfs.f_favail += statvfs->f_favail; + local->statvfs.f_fsid = statvfs->f_fsid; + local->statvfs.f_flag = statvfs->f_flag; + local->statvfs.f_namemax = statvfs->f_namemax; - STACK_WIND (frame, dht_err_cbk, - subvol, subvol->fops->flush, fd); + } +unlock: + UNLOCK (&frame->lock); - return 0; -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno); + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) + DHT_STACK_UNWIND (statfs, frame, local->op_ret, local->op_errno, + &local->statvfs, xdata); - return 0; + return 0; } int -dht_fsync (call_frame_t *frame, xlator_t *this, - fd_t *fd, int datasync) +dht_statfs (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata) { - xlator_t *subvol = NULL; + xlator_t *subvol = NULL; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; int op_errno = -1; - dht_local_t *local = NULL; - + int i = -1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); + VALIDATE_OR_GOTO (this->private, err); - subvol = dht_subvol_get_cached (this, fd->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + conf = this->private; - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - local->call_cnt = 1; + local = dht_local_init (frame, NULL, NULL, GF_FOP_STATFS); + if (!local) { + op_errno = ENOMEM; + goto err; + } - STACK_WIND (frame, dht_err_cbk, - subvol, subvol->fops->fsync, - fd, datasync); + if (IA_ISDIR (loc->inode->ia_type)) { + local->call_cnt = conf->subvolume_cnt; - return 0; + for (i = 0; i < conf->subvolume_cnt; i++) { + STACK_WIND (frame, dht_statfs_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->statfs, loc, + xdata); + } + return 0; + } -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno); + subvol = dht_subvol_get_cached (this, loc->inode); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } - return 0; -} + local->call_cnt = 1; + STACK_WIND (frame, dht_statfs_cbk, + subvol, subvol->fops->statfs, loc, xdata); -int -dht_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, struct flock *flock) -{ - DHT_STACK_UNWIND (frame, op_ret, op_errno, flock); + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (statfs, frame, -1, op_errno, NULL, NULL); return 0; } int -dht_lk (call_frame_t *frame, xlator_t *this, - fd_t *fd, int cmd, struct flock *flock) +dht_opendir (call_frame_t *frame, xlator_t *this, loc_t *loc, fd_t *fd, + dict_t *xdata) { - xlator_t *subvol = NULL; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; int op_errno = -1; - + int i = -1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (this->private, err); - subvol = dht_subvol_get_cached (this, fd->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for fd=%p", fd); - op_errno = EINVAL; - goto err; - } - - STACK_WIND (frame, dht_lk_cbk, - subvol, subvol->fops->lk, - fd, cmd, flock); - - return 0; - -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); - - return 0; -} - - -int -dht_statfs_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, struct statvfs *statvfs) -{ - dht_local_t *local = NULL; - int this_call_cnt = 0; + conf = this->private; + local = dht_local_init (frame, loc, fd, GF_FOP_OPENDIR); + if (!local) { + op_errno = ENOMEM; - local = frame->local; + goto err; + } - LOCK (&frame->lock); - { - if (op_ret == -1) { - local->op_errno = op_errno; - goto unlock; - } - local->op_ret = 0; - - /* TODO: normalize sizes */ - local->statvfs.f_bsize = statvfs->f_bsize; - local->statvfs.f_frsize = statvfs->f_frsize; - - local->statvfs.f_blocks += statvfs->f_blocks; - local->statvfs.f_bfree += statvfs->f_bfree; - local->statvfs.f_bavail += statvfs->f_bavail; - local->statvfs.f_files += statvfs->f_files; - local->statvfs.f_ffree += statvfs->f_ffree; - local->statvfs.f_favail += statvfs->f_favail; - local->statvfs.f_fsid = statvfs->f_fsid; - local->statvfs.f_flag = statvfs->f_flag; - local->statvfs.f_namemax = statvfs->f_namemax; + local->call_cnt = conf->subvolume_cnt; - } -unlock: - UNLOCK (&frame->lock); + for (i = 0; i < conf->subvolume_cnt; i++) { + STACK_WIND (frame, dht_fd_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->opendir, + loc, fd, xdata); + } + return 0; - this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->statvfs); +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (opendir, frame, -1, op_errno, NULL, NULL); return 0; } int -dht_statfs (call_frame_t *frame, xlator_t *this, loc_t *loc) +dht_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, + int op_errno, gf_dirent_t *orig_entries, dict_t *xdata) { - dht_local_t *local = NULL; - dht_conf_t *conf = NULL; - int op_errno = -1; - int i = -1; - - - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + dht_local_t *local = NULL; + gf_dirent_t entries; + gf_dirent_t *orig_entry = NULL; + gf_dirent_t *entry = NULL; + call_frame_t *prev = NULL; + xlator_t *next_subvol = NULL; + off_t next_offset = 0; + int count = 0; + dht_layout_t *layout = 0; + dht_conf_t *conf = NULL; + xlator_t *subvol = 0; + int ret = 0; - conf = this->private; + INIT_LIST_HEAD (&entries.list); + prev = cookie; + local = frame->local; + conf = this->private; - local = dht_local_init (frame); - local->call_cnt = conf->subvolume_cnt; + if (op_ret < 0) + goto done; - for (i = 0; i < conf->subvolume_cnt; i++) { - STACK_WIND (frame, dht_statfs_cbk, - conf->subvolumes[i], - conf->subvolumes[i]->fops->statfs, loc); - } + if (!local->layout) + local->layout = dht_layout_get (this, local->fd->inode); - return 0; + layout = local->layout; -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + list_for_each_entry (orig_entry, (&orig_entries->list), list) { + next_offset = orig_entry->d_off; + if (check_is_dir (NULL, (&orig_entry->d_stat), NULL) && + (prev->this != local->first_up_subvol)) { + continue; + } + if (check_is_linkfile (NULL, (&orig_entry->d_stat), + orig_entry->dict, + conf->link_xattr_name)) { + continue; + } - return 0; -} + entry = gf_dirent_for_name (orig_entry->d_name); + if (!entry) { + goto unwind; + } -int -dht_opendir (call_frame_t *frame, xlator_t *this, loc_t *loc, fd_t *fd) -{ - dht_local_t *local = NULL; - dht_conf_t *conf = NULL; - int ret = -1; - int op_errno = -1; - int i = -1; + /* Do this if conf->search_unhashed is set to "auto" */ + if (conf->search_unhashed == GF_DHT_LOOKUP_UNHASHED_AUTO) { + subvol = dht_layout_search (this, layout, + orig_entry->d_name); + if (!subvol || (subvol != prev->this)) { + /* TODO: Count the number of entries which need + linkfile to prove its existence in fs */ + layout->search_unhashed++; + } + } + dht_itransform (this, prev->this, orig_entry->d_off, + &entry->d_off); + + entry->d_stat = orig_entry->d_stat; + entry->d_ino = orig_entry->d_ino; + entry->d_type = orig_entry->d_type; + entry->d_len = orig_entry->d_len; + + if (orig_entry->dict) + entry->dict = dict_ref (orig_entry->dict); + + /* making sure we set the inode ctx right with layout, + currently possible only for non-directories, so for + directories don't set entry inodes */ + if (!IA_ISDIR(entry->d_stat.ia_type)) { + ret = dht_layout_preset (this, prev->this, + orig_entry->inode); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "failed to link the layout in inode"); + entry->inode = inode_ref (orig_entry->inode); + } else if (orig_entry->inode) { + dht_inode_ctx_time_update (orig_entry->inode, this, + &entry->d_stat, 1); + } - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); + list_add_tail (&entry->list, &entries.list); + count++; + } + op_ret = count; + /* We need to ensure that only the last subvolume's end-of-directory + * notification is respected so that directory reading does not stop + * before all subvolumes have been read. That could happen because the + * posix for each subvolume sends a ENOENT on end-of-directory but in + * distribute we're not concerned only with a posix's view of the + * directory but the aggregated namespace' view of the directory. + */ + if (prev->this != dht_last_up_subvol (this)) + op_errno = 0; - conf = this->private; +done: + if (count == 0) { + /* non-zero next_offset means that + EOF is not yet hit on the current subvol + */ + if (next_offset == 0) { + next_subvol = dht_subvol_next (this, prev->this); + } else { + next_subvol = prev->this; + } - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + if (!next_subvol) { + goto unwind; + } - local->fd = fd_ref (fd); - ret = loc_dup (loc, &local->loc); - if (ret == -1) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + if (conf->readdir_optimize == _gf_true) { + if (next_subvol != local->first_up_subvol) { + ret = dict_set_int32 (local->xattr, + GF_READDIR_SKIP_DIRS, 1); + if (ret) + gf_log (this->name, GF_LOG_ERROR, + "dict set failed"); + } else { + dict_del (local->xattr, + GF_READDIR_SKIP_DIRS); + } + } - local->call_cnt = conf->subvolume_cnt; + STACK_WIND (frame, dht_readdirp_cbk, + next_subvol, next_subvol->fops->readdirp, + local->fd, local->size, next_offset, + local->xattr); + return 0; + } - for (i = 0; i < conf->subvolume_cnt; i++) { - STACK_WIND (frame, dht_fd_cbk, - conf->subvolumes[i], - conf->subvolumes[i]->fops->opendir, - loc, fd); - } +unwind: + if (op_ret < 0) + op_ret = 0; - return 0; + DHT_STACK_UNWIND (readdirp, frame, op_ret, op_errno, &entries, NULL); -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + gf_dirent_free (&entries); - return 0; + return 0; } + int dht_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, gf_dirent_t *orig_entries) -{ - dht_local_t *local = NULL; - gf_dirent_t entries; - gf_dirent_t *orig_entry = NULL; - gf_dirent_t *entry = NULL; - call_frame_t *prev = NULL; - xlator_t *subvol = NULL; - xlator_t *next_subvol = NULL; + int op_ret, int op_errno, gf_dirent_t *orig_entries, + dict_t *xdata) +{ + dht_local_t *local = NULL; + gf_dirent_t entries; + gf_dirent_t *orig_entry = NULL; + gf_dirent_t *entry = NULL; + call_frame_t *prev = NULL; + xlator_t *next_subvol = NULL; off_t next_offset = 0; - dht_layout_t *layout = NULL; - int count = 0; + int count = 0; + dht_layout_t *layout = 0; + xlator_t *subvol = 0; + INIT_LIST_HEAD (&entries.list); + prev = cookie; + local = frame->local; - INIT_LIST_HEAD (&entries.list); - prev = cookie; - local = frame->local; + if (op_ret < 0) + goto done; - if (op_ret < 0) - goto done; + if (!local->layout) + local->layout = dht_layout_get (this, local->fd->inode); - layout = dht_layout_get (this, local->fd->inode); + layout = local->layout; - list_for_each_entry (orig_entry, &orig_entries->list, list) { - subvol = dht_layout_search (this, layout, orig_entry->d_name); + list_for_each_entry (orig_entry, (&orig_entries->list), list) { + next_offset = orig_entry->d_off; - if (!subvol || subvol == prev->this) { - entry = gf_dirent_for_name (orig_entry->d_name); - if (!entry) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto unwind; - } + subvol = dht_layout_search (this, layout, orig_entry->d_name); - dht_itransform (this, prev->this, orig_entry->d_ino, - &entry->d_ino); - dht_itransform (this, prev->this, orig_entry->d_off, - &entry->d_off); + if (!subvol || (subvol == prev->this)) { + entry = gf_dirent_for_name (orig_entry->d_name); + if (!entry) { + gf_log (this->name, GF_LOG_ERROR, + "memory allocation failed :("); + goto unwind; + } - entry->d_type = orig_entry->d_type; - entry->d_len = orig_entry->d_len; + dht_itransform (this, prev->this, orig_entry->d_off, + &entry->d_off); - list_add_tail (&entry->list, &entries.list); - count++; - } - next_offset = orig_entry->d_off; - } - op_ret = count; + entry->d_ino = orig_entry->d_ino; + entry->d_type = orig_entry->d_type; + entry->d_len = orig_entry->d_len; + + list_add_tail (&entry->list, &entries.list); + count++; + } + } + op_ret = count; + /* We need to ensure that only the last subvolume's end-of-directory + * notification is respected so that directory reading does not stop + * before all subvolumes have been read. That could happen because the + * posix for each subvolume sends a ENOENT on end-of-directory but in + * distribute we're not concerned only with a posix's view of the + * directory but the aggregated namespace' view of the directory. + */ + if (prev->this != dht_last_up_subvol (this)) + op_errno = 0; done: - if (count == 0) { + if (count == 0) { /* non-zero next_offset means that EOF is not yet hit on the current subvol */ @@ -2163,762 +3232,911 @@ done: next_subvol = prev->this; } - if (!next_subvol) { - goto unwind; - } + if (!next_subvol) { + goto unwind; + } - STACK_WIND (frame, dht_readdir_cbk, - next_subvol, next_subvol->fops->readdir, - local->fd, local->size, next_offset); - return 0; - } + STACK_WIND (frame, dht_readdir_cbk, + next_subvol, next_subvol->fops->readdir, + local->fd, local->size, next_offset, NULL); + return 0; + } unwind: - if (op_ret < 0) - op_ret = 0; + if (op_ret < 0) + op_ret = 0; - DHT_STACK_UNWIND (frame, op_ret, op_errno, &entries); + DHT_STACK_UNWIND (readdir, frame, op_ret, op_errno, &entries, NULL); - gf_dirent_free (&entries); + gf_dirent_free (&entries); return 0; } int -dht_readdir (call_frame_t *frame, xlator_t *this, - fd_t *fd, size_t size, off_t yoff) +dht_do_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t yoff, int whichop, dict_t *dict) { - dht_local_t *local = NULL; - dht_conf_t *conf = NULL; + dht_local_t *local = NULL; int op_errno = -1; - xlator_t *xvol = NULL; - off_t xoff = 0; - + xlator_t *xvol = NULL; + off_t xoff = 0; + int ret = 0; + dht_conf_t *conf = NULL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (this->private, err); - conf = this->private; - - local = dht_local_init (frame); - if (!local) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } + conf = this->private; - local->fd = fd_ref (fd); - local->size = size; + local = dht_local_init (frame, NULL, NULL, whichop); + if (!local) { + op_errno = ENOMEM; + goto err; + } - dht_deitransform (this, yoff, &xvol, (uint64_t *)&xoff); + local->fd = fd_ref (fd); + local->size = size; + local->xattr_req = (dict)? dict_ref (dict) : NULL; + local->first_up_subvol = dht_first_up_subvol (this); + + dht_deitransform (this, yoff, &xvol, (uint64_t *)&xoff); + + /* TODO: do proper readdir */ + if (whichop == GF_FOP_READDIRP) { + if (dict) + local->xattr = dict_ref (dict); + else + local->xattr = dict_new (); + + if (local->xattr) { + ret = dict_set_uint32 (local->xattr, + conf->link_xattr_name, 256); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "failed to set '%s' key", + conf->link_xattr_name); + if (conf->readdir_optimize == _gf_true) { + if (xvol != local->first_up_subvol) { + ret = dict_set_int32 (local->xattr, + GF_READDIR_SKIP_DIRS, 1); + if (ret) + gf_log (this->name, + GF_LOG_ERROR, + "Dict set failed"); + } else { + dict_del (local->xattr, + GF_READDIR_SKIP_DIRS); + } + } + } - /* TODO: do proper readdir */ - STACK_WIND (frame, dht_readdir_cbk, - xvol, xvol->fops->readdir, - fd, size, xoff); + STACK_WIND (frame, dht_readdirp_cbk, xvol, xvol->fops->readdirp, + fd, size, xoff, local->xattr); + } else { + STACK_WIND (frame, dht_readdir_cbk, xvol, xvol->fops->readdir, + fd, size, xoff, local->xattr); + } - return 0; + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (readdir, frame, -1, op_errno, NULL, NULL); - return 0; + return 0; +} + + +int +dht_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t yoff, dict_t *xdata) +{ + int op = GF_FOP_READDIR; + dht_conf_t *conf = NULL; + int i = 0; + + conf = this->private; + if (!conf) + goto out; + + for (i = 0; i < conf->subvolume_cnt; i++) { + if (!conf->subvolume_status[i]) { + op = GF_FOP_READDIRP; + break; + } + } + + if (conf->use_readdirp) + op = GF_FOP_READDIRP; + +out: + dht_do_readdir (frame, this, fd, size, yoff, op, 0); + return 0; +} + +int +dht_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t yoff, dict_t *dict) +{ + dht_do_readdir (frame, this, fd, size, yoff, GF_FOP_READDIRP, dict); + return 0; } + int dht_fsyncdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno) + int op_ret, int op_errno, dict_t *xdata) { - dht_local_t *local = NULL; - int this_call_cnt = 0; + dht_local_t *local = NULL; + int this_call_cnt = 0; - local = frame->local; + local = frame->local; - LOCK (&frame->lock); - { - if (op_ret == -1) - local->op_errno = op_errno; + LOCK (&frame->lock); + { + if (op_ret == -1) + local->op_errno = op_errno; - if (op_ret == 0) - local->op_ret = 0; - } - UNLOCK (&frame->lock); + if (op_ret == 0) + local->op_ret = 0; + } + UNLOCK (&frame->lock); - this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno); + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) + DHT_STACK_UNWIND (fsyncdir, frame, local->op_ret, + local->op_errno, xdata); return 0; } int -dht_fsyncdir (call_frame_t *frame, xlator_t *this, fd_t *fd, int datasync) +dht_fsyncdir (call_frame_t *frame, xlator_t *this, fd_t *fd, + int datasync, dict_t *xdata) { - dht_local_t *local = NULL; - dht_conf_t *conf = NULL; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; int op_errno = -1; - int i = -1; - + int i = -1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (this->private, err); - conf = this->private; + conf = this->private; - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + local = dht_local_init (frame, NULL, NULL, GF_FOP_FSYNCDIR); + if (!local) { + op_errno = ENOMEM; + goto err; + } - local->fd = fd_ref (fd); - local->call_cnt = conf->subvolume_cnt; + local->fd = fd_ref (fd); + local->call_cnt = conf->subvolume_cnt; - for (i = 0; i < conf->subvolume_cnt; i++) { - STACK_WIND (frame, dht_fsyncdir_cbk, - conf->subvolumes[i], - conf->subvolumes[i]->fops->fsyncdir, - fd, datasync); - } + for (i = 0; i < conf->subvolume_cnt; i++) { + STACK_WIND (frame, dht_fsyncdir_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->fsyncdir, + fd, datasync, xdata); + } - return 0; + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (fsyncdir, frame, -1, op_errno, NULL); - return 0; + return 0; } int dht_newfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf) + int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - call_frame_t *prev = NULL; - dht_layout_t *layout = NULL; - int ret = -1; + xlator_t *prev = NULL; + int ret = -1; + dht_local_t *local = NULL; - if (op_ret == -1) - goto out; + if (op_ret == -1) + goto out; - prev = cookie; + local = frame->local; + if (!local) { + op_ret = -1; + op_errno = EINVAL; + goto out; + } - dht_itransform (this, prev->this, stbuf->st_ino, &stbuf->st_ino); - layout = dht_layout_for_subvol (this, prev->this); + prev = cookie; - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no pre-set layout for subvolume %s", - prev->this->name); - op_ret = -1; - op_errno = EINVAL; - goto out; - } + if (local->loc.parent) { - ret = inode_ctx_put (inode, this, (uint64_t)(long)layout); - if (ret != 0) { - gf_log (this->name, GF_LOG_DEBUG, - "could not set inode context"); - op_ret = -1; - op_errno = EINVAL; - goto out; - } + dht_inode_ctx_time_update (local->loc.parent, this, + preparent, 0); + dht_inode_ctx_time_update (local->loc.parent, this, + postparent, 1); + } + ret = dht_layout_preset (this, prev, inode); + if (ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "could not set pre-set layout for subvolume %s", + prev? prev->name: NULL); + op_ret = -1; + op_errno = EINVAL; + goto out; + } + if (local->linked == _gf_true) + dht_linkfile_attr_heal (frame, this); out: - DHT_STACK_UNWIND (frame, op_ret, op_errno, inode, stbuf); - return 0; + /* + * FIXME: ia_size and st_blocks of preparent and postparent do not have + * correct values. since, preparent and postparent buffers correspond + * to a directory these two members should have values equal to sum of + * corresponding values from each of the subvolume. + * See dht_iatt_merge for reference. + */ + DHT_STRIP_PHASE1_FLAGS (stbuf); + DHT_STACK_UNWIND (mknod, frame, op_ret, op_errno, inode, stbuf, + preparent, postparent, xdata); + return 0; } int dht_mknod_linkfile_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *stbuf) + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) { - dht_local_t *local = NULL; - xlator_t *cached_subvol = NULL; + dht_local_t *local = NULL; + xlator_t *cached_subvol = NULL; if (op_ret == -1) goto err; - local = frame->local; - cached_subvol = local->cached_subvol; + local = frame->local; + if (!local || !local->cached_subvol) { + op_errno = EINVAL; + goto err; + } - STACK_WIND (frame, dht_newfile_cbk, - cached_subvol, cached_subvol->fops->mknod, - &local->loc, local->mode, local->rdev); + cached_subvol = local->cached_subvol; + STACK_WIND_COOKIE (frame, dht_newfile_cbk, (void *)cached_subvol, + cached_subvol, cached_subvol->fops->mknod, + &local->loc, local->mode, local->rdev, local->umask, + local->params); + + return 0; +err: + DHT_STACK_UNWIND (mknod, frame, -1, op_errno, NULL, NULL, NULL, NULL, + NULL); return 0; - err: - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL); - return 0; } int dht_mknod (call_frame_t *frame, xlator_t *this, - loc_t *loc, mode_t mode, dev_t rdev) + loc_t *loc, mode_t mode, dev_t rdev, mode_t umask, dict_t *params) { - xlator_t *subvol = NULL; - int op_errno = -1; + xlator_t *subvol = NULL; + int op_errno = -1; xlator_t *avail_subvol = NULL; - dht_conf_t *conf = NULL; - dht_local_t *local = NULL; - - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); + dht_local_t *local = NULL; - conf = this->private; + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); dht_get_du_info (frame, this, loc); - subvol = dht_subvol_get_hashed (this, loc); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume in layout for path=%s", - loc->path); - op_errno = ENOENT; - goto err; - } + local = dht_local_init (frame, loc, NULL, GF_FOP_MKNOD); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + subvol = dht_subvol_get_hashed (this, loc); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s", + loc->path); + op_errno = ENOENT; + goto err; + } if (!dht_is_subvol_filled (this, subvol)) { gf_log (this->name, GF_LOG_TRACE, "creating %s on %s", loc->path, subvol->name); - - STACK_WIND (frame, dht_newfile_cbk, - subvol, subvol->fops->mknod, - loc, mode, rdev); + + STACK_WIND_COOKIE (frame, dht_newfile_cbk, (void *)subvol, + subvol, subvol->fops->mknod, loc, mode, + rdev, umask, params); } else { - avail_subvol = dht_free_disk_available_subvol (this, subvol); + + avail_subvol = dht_free_disk_available_subvol (this, subvol, + local); if (avail_subvol != subvol) { - /* Choose the minimum filled volume, and create the + /* Choose the minimum filled volume, and create the files there */ - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + + local->params = dict_ref (params); local->cached_subvol = avail_subvol; - local->mode = mode; + local->mode = mode; local->rdev = rdev; - - dht_linkfile_create (frame, + local->umask = umask; + dht_linkfile_create (frame, dht_mknod_linkfile_create_cbk, - avail_subvol, subvol, loc); + this, avail_subvol, subvol, loc); } else { gf_log (this->name, GF_LOG_TRACE, "creating %s on %s", loc->path, subvol->name); - - STACK_WIND (frame, dht_newfile_cbk, - subvol, subvol->fops->mknod, - loc, mode, rdev); + + STACK_WIND_COOKIE (frame, dht_newfile_cbk, + (void *)subvol, subvol, + subvol->fops->mknod, loc, mode, + rdev, umask, params); } } - return 0; + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (mknod, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL); - return 0; + return 0; } int dht_symlink (call_frame_t *frame, xlator_t *this, - const char *linkname, loc_t *loc) + const char *linkname, loc_t *loc, mode_t umask, dict_t *params) { - xlator_t *subvol = NULL; - int op_errno = -1; + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); + local = dht_local_init (frame, loc, NULL, GF_FOP_SYMLINK); + if (!local) { + op_errno = ENOMEM; + goto err; + } - subvol = dht_subvol_get_hashed (this, loc); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume in layout for path=%s", - loc->path); - op_errno = ENOENT; - goto err; - } + subvol = dht_subvol_get_hashed (this, loc); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s", + loc->path); + op_errno = ENOENT; + goto err; + } - gf_log (this->name, GF_LOG_TRACE, - "creating %s on %s", loc->path, subvol->name); + gf_log (this->name, GF_LOG_TRACE, + "creating %s on %s", loc->path, subvol->name); - STACK_WIND (frame, dht_newfile_cbk, - subvol, subvol->fops->symlink, - linkname, loc); + STACK_WIND_COOKIE (frame, dht_newfile_cbk, (void *)subvol, subvol, + subvol->fops->symlink, linkname, loc, umask, + params); - return 0; + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (link, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL); - return 0; + return 0; } int -dht_unlink (call_frame_t *frame, xlator_t *this, loc_t *loc) +dht_unlink (call_frame_t *frame, xlator_t *this, loc_t *loc, int xflag, + dict_t *xdata) { - xlator_t *cached_subvol = NULL; - xlator_t *hashed_subvol = NULL; - int op_errno = -1; - dht_local_t *local = NULL; - - - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - - cached_subvol = dht_subvol_get_cached (this, loc->inode); - if (!cached_subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + xlator_t *cached_subvol = NULL; + xlator_t *hashed_subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; - hashed_subvol = dht_subvol_get_hashed (this, loc); - if (!hashed_subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume in layout for path=%s", - loc->path); - op_errno = EINVAL; - goto err; - } + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + if (dht_filter_loc_subvol_key (this, loc, &local->loc, + &cached_subvol)) { + gf_log (this->name, GF_LOG_INFO, + "unlinking %s on %s (given path %s)", + local->loc.path, cached_subvol->name, loc->path); + STACK_WIND (frame, dht_unlink_cbk, + cached_subvol, cached_subvol->fops->unlink, + &local->loc, xflag, xdata); + goto done; + } - local->call_cnt = 1; - if (hashed_subvol != cached_subvol) - local->call_cnt++; + local = dht_local_init (frame, loc, NULL, GF_FOP_UNLINK); + if (!local) { + op_errno = ENOMEM; - STACK_WIND (frame, dht_err_cbk, - cached_subvol, cached_subvol->fops->unlink, loc); + goto err; + } - if (hashed_subvol != cached_subvol) - STACK_WIND (frame, dht_err_cbk, - hashed_subvol, hashed_subvol->fops->unlink, loc); + hashed_subvol = dht_subvol_get_hashed (this, loc); + if (!hashed_subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s", + loc->path); + op_errno = EINVAL; + goto err; + } - return 0; + cached_subvol = local->cached_subvol; + if (!cached_subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } + local->flags = xflag; + if (hashed_subvol != cached_subvol) { + STACK_WIND (frame, dht_unlink_linkfile_cbk, + hashed_subvol, hashed_subvol->fops->unlink, loc, + xflag, xdata); + } else { + STACK_WIND (frame, dht_unlink_cbk, + cached_subvol, cached_subvol->fops->unlink, loc, + xflag, xdata); + } +done: + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (unlink, frame, -1, op_errno, NULL, NULL, NULL); - return 0; + return 0; } int dht_link_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf) + int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { call_frame_t *prev = NULL; - dht_layout_t *layout = NULL; - dht_local_t *local = NULL; + dht_layout_t *layout = NULL; + dht_local_t *local = NULL; prev = cookie; - local = frame->local; + + local = frame->local; if (op_ret == -1) goto out; - layout = dht_layout_for_subvol (this, prev->this); - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no pre-set layout for subvolume %s", - prev->this->name); - op_ret = -1; - op_errno = EINVAL; - goto out; - } - - stbuf->st_ino = local->loc.inode->ino; + layout = dht_layout_for_subvol (this, prev->this); + if (!layout) { + gf_log (this->name, GF_LOG_DEBUG, + "no pre-set layout for subvolume %s", + prev->this->name); + op_ret = -1; + op_errno = EINVAL; + goto out; + } + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + preparent, 0); + dht_inode_ctx_time_update (local->loc.parent, this, + postparent, 1); + } + if (local->linked == _gf_true) { + local->stbuf = *stbuf; + dht_linkfile_attr_heal (frame, this); + } out: - DHT_STACK_UNWIND (frame, op_ret, op_errno, inode, stbuf); + DHT_STRIP_PHASE1_FLAGS (stbuf); + DHT_STACK_UNWIND (link, frame, op_ret, op_errno, inode, stbuf, preparent, + postparent, NULL); - return 0; + return 0; } int dht_link_linkfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf) + int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) { - dht_local_t *local = NULL; - xlator_t *srcvol = NULL; - + dht_local_t *local = NULL; + xlator_t *srcvol = NULL; - if (op_ret == -1) - goto err; + if (op_ret == -1) + goto err; - local = frame->local; - srcvol = local->linkfile.srcvol; + local = frame->local; + srcvol = local->linkfile.srcvol; - STACK_WIND (frame, dht_link_cbk, - srcvol, srcvol->fops->link, - &local->loc, &local->loc2); + STACK_WIND (frame, dht_link_cbk, srcvol, srcvol->fops->link, + &local->loc, &local->loc2, xdata); - return 0; + return 0; err: - DHT_STACK_UNWIND (frame, op_ret, op_errno, inode, stbuf); + DHT_STRIP_PHASE1_FLAGS (stbuf); + DHT_STACK_UNWIND (link, frame, op_ret, op_errno, inode, stbuf, preparent, + postparent, NULL); - return 0; + return 0; } int dht_link (call_frame_t *frame, xlator_t *this, - loc_t *oldloc, loc_t *newloc) -{ - xlator_t *cached_subvol = NULL; - xlator_t *hashed_subvol = NULL; - int op_errno = -1; - int ret = -1; - dht_local_t *local = NULL; - - - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (oldloc, err); - VALIDATE_OR_GOTO (newloc, err); - - cached_subvol = dht_subvol_get_cached (this, oldloc->inode); - if (!cached_subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", oldloc->path); - op_errno = EINVAL; - goto err; - } + loc_t *oldloc, loc_t *newloc, dict_t *xdata) +{ + xlator_t *cached_subvol = NULL; + xlator_t *hashed_subvol = NULL; + int op_errno = -1; + int ret = -1; + dht_local_t *local = NULL; - hashed_subvol = dht_subvol_get_hashed (this, newloc); - if (!hashed_subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume in layout for path=%s", - newloc->path); - op_errno = EINVAL; - goto err; - } + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (oldloc, err); + VALIDATE_OR_GOTO (newloc, err); - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + local = dht_local_init (frame, oldloc, NULL, GF_FOP_LINK); + if (!local) { + op_errno = ENOMEM; - ret = loc_copy (&local->loc, oldloc); - if (ret == -1) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + goto err; + } - ret = loc_copy (&local->loc2, newloc); - if (ret == -1) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + cached_subvol = local->cached_subvol; + if (!cached_subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", oldloc->path); + op_errno = EINVAL; + goto err; + } - if (hashed_subvol != cached_subvol) { - dht_linkfile_create (frame, dht_link_linkfile_cbk, - cached_subvol, hashed_subvol, newloc); - } else { - STACK_WIND (frame, dht_link_cbk, - cached_subvol, cached_subvol->fops->link, - oldloc, newloc); - } + hashed_subvol = dht_subvol_get_hashed (this, newloc); + if (!hashed_subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s", + newloc->path); + op_errno = EINVAL; + goto err; + } - return 0; + ret = loc_copy (&local->loc2, newloc); + if (ret == -1) { + op_errno = ENOMEM; + goto err; + } + + if (hashed_subvol != cached_subvol) { + uuid_copy (local->gfid, oldloc->inode->gfid); + dht_linkfile_create (frame, dht_link_linkfile_cbk, this, + cached_subvol, hashed_subvol, newloc); + } else { + STACK_WIND (frame, dht_link_cbk, + cached_subvol, cached_subvol->fops->link, + oldloc, newloc, xdata); + } + + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (link, frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL); - return 0; + return 0; } int dht_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, - fd_t *fd, inode_t *inode, struct stat *stbuf) + int op_ret, int op_errno, + fd_t *fd, inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { - call_frame_t *prev = NULL; - dht_layout_t *layout = NULL; - int ret = -1; + call_frame_t *prev = NULL; + int ret = -1; + dht_local_t *local = NULL; - if (op_ret == -1) - goto out; + if (op_ret == -1) + goto out; - prev = cookie; + local = frame->local; + if (!local) { + op_ret = -1; + op_errno = EINVAL; + goto out; + } - dht_itransform (this, prev->this, stbuf->st_ino, &stbuf->st_ino); - layout = dht_layout_for_subvol (this, prev->this); + prev = cookie; - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no pre-set layout for subvolume %s", - prev->this->name); - op_ret = -1; - op_errno = EINVAL; - goto out; - } + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + preparent, 0); - ret = inode_ctx_put (inode, this, (uint64_t)(long)layout); - if (ret != 0) { - gf_log (this->name, GF_LOG_DEBUG, - "could not set inode context"); - op_ret = -1; - op_errno = EINVAL; - goto out; - } + dht_inode_ctx_time_update (local->loc.parent, this, + postparent, 1); + } + ret = dht_layout_preset (this, prev->this, inode); + if (ret != 0) { + gf_log (this->name, GF_LOG_DEBUG, + "could not set preset layout for subvol %s", + prev->this->name); + op_ret = -1; + op_errno = EINVAL; + goto out; + } + if (local->linked == _gf_true) { + local->stbuf = *stbuf; + dht_linkfile_attr_heal (frame, this); + } out: - DHT_STACK_UNWIND (frame, op_ret, op_errno, fd, inode, stbuf); - return 0; + DHT_STRIP_PHASE1_FLAGS (stbuf); + DHT_STACK_UNWIND (create, frame, op_ret, op_errno, fd, inode, stbuf, preparent, + postparent, NULL); + return 0; } int dht_create_linkfile_create_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *stbuf) + xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) { - dht_local_t *local = NULL; - xlator_t *cached_subvol = NULL; + dht_local_t *local = NULL; + xlator_t *cached_subvol = NULL; if (op_ret == -1) goto err; - local = frame->local; - cached_subvol = local->cached_subvol; + local = frame->local; + cached_subvol = local->cached_subvol; STACK_WIND (frame, dht_create_cbk, cached_subvol, cached_subvol->fops->create, - &local->loc, local->flags, local->mode, local->fd); + &local->loc, local->flags, local->mode, + local->umask, local->fd, local->params); return 0; - err: - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL); - return 0; +err: + DHT_STACK_UNWIND (create, frame, -1, op_errno, NULL, NULL, NULL, + NULL, NULL, NULL); + return 0; } int dht_create (call_frame_t *frame, xlator_t *this, - loc_t *loc, int32_t flags, mode_t mode, fd_t *fd) + loc_t *loc, int32_t flags, mode_t mode, + mode_t umask, fd_t *fd, dict_t *params) { - int op_errno = -1; - int ret = -1; - xlator_t *subvol = NULL; - dht_conf_t *conf = NULL; + int op_errno = -1; + xlator_t *subvol = NULL; dht_local_t *local = NULL; xlator_t *avail_subvol = NULL; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - - conf = this->private; + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); dht_get_du_info (frame, this, loc); - local = dht_local_init (frame); - if (!local) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } + local = dht_local_init (frame, loc, fd, GF_FOP_CREATE); + if (!local) { + op_errno = ENOMEM; + goto err; + } - subvol = dht_subvol_get_hashed (this, loc); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume in layout for path=%s", - loc->path); - op_errno = ENOENT; - goto err; - } + if (dht_filter_loc_subvol_key (this, loc, &local->loc, + &subvol)) { + gf_log (this->name, GF_LOG_INFO, + "creating %s on %s (got create on %s)", + local->loc.path, subvol->name, loc->path); + STACK_WIND (frame, dht_create_cbk, + subvol, subvol->fops->create, + &local->loc, flags, mode, umask, fd, params); + goto done; + } + + subvol = dht_subvol_get_hashed (this, loc); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s", + loc->path); + op_errno = ENOENT; + goto err; + } if (!dht_is_subvol_filled (this, subvol)) { gf_log (this->name, GF_LOG_TRACE, "creating %s on %s", loc->path, subvol->name); STACK_WIND (frame, dht_create_cbk, subvol, subvol->fops->create, - loc, flags, mode, fd); - } else { - /* Choose the minimum filled volume, and create the - files there */ - /* TODO */ - avail_subvol = dht_free_disk_available_subvol (this, subvol); - if (avail_subvol != subvol) { - ret = loc_dup (loc, &local->loc); - if (ret == -1) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - local->fd = fd_ref (fd); - local->flags = flags; - local->mode = mode; - - local->cached_subvol = avail_subvol; - local->hashed_subvol = subvol; - gf_log (this->name, GF_LOG_TRACE, - "creating %s on %s (link at %s)", loc->path, - avail_subvol->name, subvol->name); - dht_linkfile_create (frame, - dht_create_linkfile_create_cbk, - avail_subvol, subvol, loc); - } else { - gf_log (this->name, GF_LOG_TRACE, - "creating %s on %s", loc->path, subvol->name); - STACK_WIND (frame, dht_create_cbk, - subvol, subvol->fops->create, - loc, flags, mode, fd); - - } + loc, flags, mode, umask, fd, params); + goto done; } - - return 0; + /* Choose the minimum filled volume, and create the + files there */ + avail_subvol = dht_free_disk_available_subvol (this, subvol, local); + if (avail_subvol != subvol) { + local->params = dict_ref (params); + local->flags = flags; + local->mode = mode; + local->umask = umask; + local->cached_subvol = avail_subvol; + local->hashed_subvol = subvol; + gf_log (this->name, GF_LOG_TRACE, + "creating %s on %s (link at %s)", loc->path, + avail_subvol->name, subvol->name); + dht_linkfile_create (frame, dht_create_linkfile_create_cbk, + this, avail_subvol, subvol, loc); + goto done; + } + gf_log (this->name, GF_LOG_TRACE, + "creating %s on %s", loc->path, subvol->name); + STACK_WIND (frame, dht_create_cbk, + subvol, subvol->fops->create, + loc, flags, mode, umask, fd, params); +done: + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (create, frame, -1, op_errno, NULL, NULL, NULL, + NULL, NULL, NULL); - return 0; + return 0; } int dht_mkdir_selfheal_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno) + xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) { - dht_local_t *local = NULL; - dht_layout_t *layout = NULL; + dht_local_t *local = NULL; + dht_layout_t *layout = NULL; + local = frame->local; + layout = local->selfheal.layout; - local = frame->local; - layout = local->selfheal.layout; + if (op_ret == 0) { + dht_layout_set (this, local->inode, layout); + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, this, + &local->preparent, 0); - if (op_ret == 0) { - inode_ctx_put (local->inode, this, (uint64_t)(long)layout); - local->selfheal.layout = NULL; - local->stbuf.st_ino = local->st_ino; - } + dht_inode_ctx_time_update (local->loc.parent, this, + &local->postparent, 1); + } + } - DHT_STACK_UNWIND (frame, op_ret, op_errno, - local->inode, &local->stbuf); + DHT_STACK_UNWIND (mkdir, frame, op_ret, op_errno, + local->inode, &local->stbuf, &local->preparent, + &local->postparent, NULL); - return 0; + return 0; } int dht_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, inode_t *inode, struct stat *stbuf) + int op_ret, int op_errno, inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { - dht_local_t *local = NULL; - int this_call_cnt = 0; - int ret = -1; - int subvol_filled = 0; - call_frame_t *prev = NULL; - dht_layout_t *layout = NULL; - dht_conf_t *conf = NULL; + dht_local_t *local = NULL; + int this_call_cnt = 0; + int ret = -1; + gf_boolean_t subvol_filled = _gf_false; + call_frame_t *prev = NULL; + dht_layout_t *layout = NULL; - conf = this->private; - local = frame->local; - prev = cookie; - layout = local->layout; + local = frame->local; + prev = cookie; + layout = local->layout; subvol_filled = dht_is_subvol_filled (this, prev->this); - LOCK (&frame->lock); - { + LOCK (&frame->lock); + { if (subvol_filled && (op_ret != -1)) { ret = dht_layout_merge (this, layout, prev->this, -1, ENOSPC, NULL); } else { + if (op_ret == -1 && op_errno == EEXIST) + /* Very likely just a race between mkdir and + self-heal (from lookup of a concurrent mkdir + attempt). + Ignore error for now. layout setting will + anyways fail if this was a different (old) + pre-existing different directory. + */ + op_ret = 0; ret = dht_layout_merge (this, layout, prev->this, op_ret, op_errno, NULL); } + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to merge layouts", local->loc.path); - if (op_ret == -1) { - local->op_errno = op_errno; - goto unlock; - } - dht_stat_merge (this, &local->stbuf, stbuf, prev->this); - } + if (op_ret == -1) { + local->op_errno = op_errno; + goto unlock; + } + dht_iatt_merge (this, &local->stbuf, stbuf, prev->this); + dht_iatt_merge (this, &local->preparent, preparent, prev->this); + dht_iatt_merge (this, &local->postparent, postparent, + prev->this); + } unlock: - UNLOCK (&frame->lock); + UNLOCK (&frame->lock); - this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) { - local->layout = NULL; - dht_selfheal_new_directory (frame, dht_mkdir_selfheal_cbk, - layout); - } + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + dht_selfheal_new_directory (frame, dht_mkdir_selfheal_cbk, + layout); + } return 0; } int -dht_mkdir_hashed_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf) +dht_mkdir_hashed_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) { - dht_local_t *local = NULL; - int ret = -1; - call_frame_t *prev = NULL; - dht_layout_t *layout = NULL; - dht_conf_t *conf = NULL; - int i = 0; - xlator_t *hashed_subvol = NULL; + dht_local_t *local = NULL; + int ret = -1; + call_frame_t *prev = NULL; + dht_layout_t *layout = NULL; + dht_conf_t *conf = NULL; + int i = 0; + xlator_t *hashed_subvol = NULL; - local = frame->local; - prev = cookie; - layout = local->layout; - conf = this->private; - hashed_subvol = local->hashed_subvol; + VALIDATE_OR_GOTO (this->private, err); + + local = frame->local; + prev = cookie; + layout = local->layout; + conf = this->private; + hashed_subvol = local->hashed_subvol; + + if (uuid_is_null (local->loc.gfid) && !op_ret) + uuid_copy (local->loc.gfid, stbuf->ia_gfid); if (dht_is_subvol_filled (this, hashed_subvol)) ret = dht_layout_merge (this, layout, prev->this, @@ -2926,47 +4144,55 @@ dht_mkdir_hashed_cbk (call_frame_t *frame, void *cookie, else ret = dht_layout_merge (this, layout, prev->this, op_ret, op_errno, NULL); - - if (op_ret == -1) { - local->op_errno = op_errno; - goto err; - } - local->op_ret = 0; - dht_stat_merge (this, &local->stbuf, stbuf, prev->this); + /* TODO: we may have to return from the function + if layout merge fails. For now, lets just log an error */ + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to merge layouts", local->loc.path); - local->st_ino = local->stbuf.st_ino; + if (op_ret == -1) { + local->op_errno = op_errno; + goto err; + } + local->op_ret = 0; - local->call_cnt = conf->subvolume_cnt - 1; - - if (local->call_cnt == 0) { - local->layout = NULL; - dht_selfheal_directory (frame, dht_mkdir_selfheal_cbk, - &local->loc, layout); - } - for (i = 0; i < conf->subvolume_cnt; i++) { - if (conf->subvolumes[i] == hashed_subvol) - continue; - STACK_WIND (frame, dht_mkdir_cbk, - conf->subvolumes[i], - conf->subvolumes[i]->fops->mkdir, - &local->loc, local->mode); - } - return 0; + dht_iatt_merge (this, &local->stbuf, stbuf, prev->this); + dht_iatt_merge (this, &local->preparent, preparent, prev->this); + dht_iatt_merge (this, &local->postparent, postparent, prev->this); + + local->call_cnt = conf->subvolume_cnt - 1; + + if (uuid_is_null (local->loc.gfid)) + uuid_copy (local->loc.gfid, stbuf->ia_gfid); + if (local->call_cnt == 0) { + dht_selfheal_directory (frame, dht_mkdir_selfheal_cbk, + &local->loc, layout); + } + for (i = 0; i < conf->subvolume_cnt; i++) { + if (conf->subvolumes[i] == hashed_subvol) + continue; + STACK_WIND (frame, dht_mkdir_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->mkdir, &local->loc, + local->mode, local->umask, local->params); + } + return 0; err: - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL); + DHT_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL, + NULL, NULL); return 0; } -int + + int dht_mkdir (call_frame_t *frame, xlator_t *this, - loc_t *loc, mode_t mode) + loc_t *loc, mode_t mode, mode_t umask, dict_t *params) { - dht_local_t *local = NULL; - dht_conf_t *conf = NULL; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; int op_errno = -1; - int ret = -1; - xlator_t *hashed_subvol = NULL; + xlator_t *hashed_subvol = NULL; VALIDATE_OR_GOTO (frame, err); @@ -2974,722 +4200,1013 @@ dht_mkdir (call_frame_t *frame, xlator_t *this, VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->inode, err); VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (this->private, err); - conf = this->private; + conf = this->private; dht_get_du_info (frame, this, loc); - local = dht_local_init (frame); - if (!local) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } - - hashed_subvol = dht_subvol_get_hashed (this, loc); + local = dht_local_init (frame, loc, NULL, GF_FOP_MKDIR); + if (!local) { + op_errno = ENOMEM; + goto err; + } - if (hashed_subvol == NULL) { - gf_log (this->name, GF_LOG_DEBUG, - "hashed subvol not found for %s", + hashed_subvol = dht_subvol_get_hashed (this, loc); + if (hashed_subvol == NULL) { + gf_log (this->name, GF_LOG_DEBUG, + "hashed subvol not found for %s", loc->path); - op_errno = EINVAL; - goto err; - } + op_errno = EINVAL; + goto err; + } - local->hashed_subvol = hashed_subvol; - local->inode = inode_ref (loc->inode); - ret = loc_copy (&local->loc, loc); - local->mode = mode; + local->hashed_subvol = hashed_subvol; + local->mode = mode; + local->umask = umask; + local->params = dict_ref (params); + local->inode = inode_ref (loc->inode); - if (ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } - - local->layout = dht_layout_new (this, conf->subvolume_cnt); - if (!local->layout) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } + local->layout = dht_layout_new (this, conf->subvolume_cnt); + if (!local->layout) { + op_errno = ENOMEM; + goto err; + } - STACK_WIND (frame, dht_mkdir_hashed_cbk, - hashed_subvol, - hashed_subvol->fops->mkdir, - loc, mode); + STACK_WIND (frame, dht_mkdir_hashed_cbk, + hashed_subvol, + hashed_subvol->fops->mkdir, + loc, mode, umask, params); - return 0; + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL, + NULL, NULL); - return 0; + return 0; } int dht_rmdir_selfheal_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno) + int op_ret, int op_errno, dict_t *xdata) { - dht_local_t *local = NULL; + dht_local_t *local = NULL; - local = frame->local; - local->layout = NULL; + local = frame->local; - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno); + DHT_STACK_UNWIND (rmdir, frame, local->op_ret, local->op_errno, + &local->preparent, &local->postparent, NULL); - return 0; + return 0; } int -dht_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno) +dht_rmdir_hashed_subvol_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - uint64_t tmp_layout = 0; - dht_local_t *local = NULL; - int this_call_cnt = 0; - call_frame_t *prev = NULL; - dht_layout_t *layout = NULL; + dht_local_t *local = NULL; + int this_call_cnt = 0; + call_frame_t *prev = NULL; - local = frame->local; - prev = cookie; - - LOCK (&frame->lock); - { - if (op_ret == -1) { - local->op_errno = op_errno; - local->op_ret = -1; - - if (op_errno != ENOENT) - local->need_selfheal = 1; - - gf_log (this->name, GF_LOG_DEBUG, - "rmdir on %s for %s failed (%s)", - prev->this->name, local->loc.path, - strerror (op_errno)); - goto unlock; - } - } + local = frame->local; + prev = cookie; + + LOCK (&frame->lock); + { + if (op_ret == -1) { + local->op_errno = op_errno; + local->op_ret = -1; + if (op_errno != ENOENT && op_errno != EACCES) { + local->need_selfheal = 1; + } + + + gf_log (this->name, GF_LOG_DEBUG, + "rmdir on %s for %s failed (%s)", + prev->this->name, local->loc.path, + strerror (op_errno)); + goto unlock; + } + + dht_iatt_merge (this, &local->preparent, preparent, prev->this); + dht_iatt_merge (this, &local->postparent, postparent, + prev->this); + + } unlock: - UNLOCK (&frame->lock); + UNLOCK (&frame->lock); + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + if (local->need_selfheal) { + local->layout = + dht_layout_get (this, local->loc.inode); + + /* TODO: neater interface needed below */ + local->stbuf.ia_type = local->loc.inode->ia_type; + + uuid_copy (local->gfid, local->loc.inode->gfid); + dht_selfheal_restore (frame, dht_rmdir_selfheal_cbk, + &local->loc, local->layout); + } else { + + if (local->loc.parent) { + dht_inode_ctx_time_update (local->loc.parent, + this, + &local->preparent, + 0); + + dht_inode_ctx_time_update (local->loc.parent, + this, + &local->postparent, + 1); + } - this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) { - if (local->need_selfheal) { - inode_ctx_get (local->loc.inode, this, - &tmp_layout); - layout = (dht_layout_t *)(long)tmp_layout; - - /* TODO: neater interface needed below */ - local->stbuf.st_mode = local->loc.inode->st_mode; - - dht_selfheal_restore (frame, dht_rmdir_selfheal_cbk, - &local->loc, layout); - } else { - DHT_STACK_UNWIND (frame, local->op_ret, - local->op_errno); - } - } + DHT_STACK_UNWIND (rmdir, frame, local->op_ret, + local->op_errno, &local->preparent, + &local->postparent, NULL); + } + } return 0; } int -dht_rmdir_do (call_frame_t *frame, xlator_t *this) +dht_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - dht_local_t *local = NULL; - dht_conf_t *conf = NULL; - int i = 0; - - conf = this->private; - local = frame->local; - - if (local->op_ret == -1) - goto err; + dht_local_t *local = NULL; + int this_call_cnt = 0; + call_frame_t *prev = NULL; + int done = 0; - local->call_cnt = conf->subvolume_cnt; + local = frame->local; + prev = cookie; - for (i = 0; i < conf->subvolume_cnt; i++) { - STACK_WIND (frame, dht_rmdir_cbk, - conf->subvolumes[i], - conf->subvolumes[i]->fops->rmdir, - &local->loc); - } + LOCK (&frame->lock); + { + if (op_ret == -1) { + local->op_errno = op_errno; + local->op_ret = -1; - return 0; + if (op_errno != ENOENT && op_errno != EACCES) { + local->need_selfheal = 1; + } -err: - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno); - return 0; -} + gf_log (this->name, GF_LOG_DEBUG, + "rmdir on %s for %s failed (%s)", + prev->this->name, local->loc.path, + strerror (op_errno)); + goto unlock; + } + /* Track if rmdir succeeded on atleast one subvol*/ + local->fop_succeeded = 1; + dht_iatt_merge (this, &local->preparent, preparent, prev->this); + dht_iatt_merge (this, &local->postparent, postparent, + prev->this); + } +unlock: + UNLOCK (&frame->lock); -int -dht_rmdir_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, gf_dirent_t *entries) -{ - dht_local_t *local = NULL; - int this_call_cnt = -1; - call_frame_t *prev = NULL; - local = frame->local; - prev = cookie; - - if (op_ret > 2) { - gf_log (this->name, GF_LOG_TRACE, - "readdir on %s for %s returned %d entries", - prev->this->name, local->loc.path, op_ret); - local->op_ret = -1; - local->op_errno = ENOTEMPTY; - } + this_call_cnt = dht_frame_return (frame); - this_call_cnt = dht_frame_return (frame); + /* if local->hashed_subvol, we are yet to wind to hashed_subvol. */ + if (local->hashed_subvol && (this_call_cnt == 1)) { + done = 1; + } else if (!local->hashed_subvol && !this_call_cnt) { + done = 1; + } - if (is_last_call (this_call_cnt)) { - dht_rmdir_do (frame, this); - } - return 0; -} + if (done) { + if (local->need_selfheal && local->fop_succeeded) { + local->layout = + dht_layout_get (this, local->loc.inode); + /* TODO: neater interface needed below */ + local->stbuf.ia_type = local->loc.inode->ia_type; -int -dht_rmdir_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, fd_t *fd) -{ - dht_local_t *local = NULL; - int this_call_cnt = -1; - call_frame_t *prev = NULL; + uuid_copy (local->gfid, local->loc.inode->gfid); + dht_selfheal_restore (frame, dht_rmdir_selfheal_cbk, + &local->loc, local->layout); + } else if (this_call_cnt) { + /* If non-hashed subvol's have responded, proceed */ + local->need_selfheal = 0; + STACK_WIND (frame, dht_rmdir_hashed_subvol_cbk, + local->hashed_subvol, + local->hashed_subvol->fops->rmdir, + &local->loc, local->flags, NULL); + } else if (!this_call_cnt) { + /* All subvol's have responded, proceed */ - local = frame->local; - prev = cookie; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "opendir on %s for %s failed (%s)", - prev->this->name, local->loc.path, - strerror (op_errno)); - goto err; - } + if (local->loc.parent) { - STACK_WIND (frame, dht_rmdir_readdir_cbk, - prev->this, prev->this->fops->readdir, - local->fd, 4096, 0); + dht_inode_ctx_time_update (local->loc.parent, + this, + &local->preparent, + 0); - return 0; + dht_inode_ctx_time_update (local->loc.parent, + this, + &local->postparent, + 1); -err: - this_call_cnt = dht_frame_return (frame); + } - if (is_last_call (this_call_cnt)) { - dht_rmdir_do (frame, this); - } + DHT_STACK_UNWIND (rmdir, frame, local->op_ret, + local->op_errno, &local->preparent, + &local->postparent, NULL); + } + } - return 0; + return 0; } int -dht_rmdir (call_frame_t *frame, xlator_t *this, loc_t *loc) +dht_rmdir_do (call_frame_t *frame, xlator_t *this) { - dht_local_t *local = NULL; - dht_conf_t *conf = NULL; - int op_errno = -1; - int i = -1; - int ret = -1; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; + int i = 0; + xlator_t *hashed_subvol = NULL; + VALIDATE_OR_GOTO (this->private, err); - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + conf = this->private; + local = frame->local; - conf = this->private; + if (local->op_ret == -1) + goto err; - local = dht_local_init (frame); - if (!local) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } + local->call_cnt = conf->subvolume_cnt; - local->call_cnt = conf->subvolume_cnt; - local->op_ret = 0; + /* first remove from non-hashed_subvol */ + hashed_subvol = dht_subvol_get_hashed (this, &local->loc); - ret = loc_copy (&local->loc, loc); - if (ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } + if (!hashed_subvol) { + gf_log (this->name, GF_LOG_WARNING, "failed to get hashed " + "subvol for %s",local->loc.path); + } else { + local->hashed_subvol = hashed_subvol; + } - local->fd = fd_create (local->loc.inode, frame->root->pid); - if (!local->fd) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } + /* When DHT has only 1 child */ + if (conf->subvolume_cnt == 1) { + STACK_WIND (frame, dht_rmdir_hashed_subvol_cbk, + conf->subvolumes[0], + conf->subvolumes[0]->fops->rmdir, + &local->loc, local->flags, NULL); + return 0; + } - for (i = 0; i < conf->subvolume_cnt; i++) { - STACK_WIND (frame, dht_rmdir_opendir_cbk, - conf->subvolumes[i], - conf->subvolumes[i]->fops->opendir, - loc, local->fd); - } + for (i = 0; i < conf->subvolume_cnt; i++) { + if (hashed_subvol && + (hashed_subvol == conf->subvolumes[i])) + continue; - return 0; + STACK_WIND (frame, dht_rmdir_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->rmdir, + &local->loc, local->flags, NULL); + } -err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno); + return 0; - return 0; +err: + DHT_STACK_UNWIND (rmdir, frame, local->op_ret, local->op_errno, + &local->preparent, &local->postparent, NULL); + return 0; } int -dht_xattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, dict_t *dict) +dht_rmdir_linkfile_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - DHT_STACK_UNWIND (frame, op_ret, op_errno, dict); - return 0; + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + xlator_t *src = NULL; + call_frame_t *main_frame = NULL; + dht_local_t *main_local = NULL; + int this_call_cnt = 0; + + local = frame->local; + prev = cookie; + src = prev->this; + + main_frame = local->main_frame; + main_local = main_frame->local; + + if (op_ret == 0) { + gf_log (this->name, GF_LOG_TRACE, + "unlinked linkfile %s on %s", + local->loc.path, src->name); + } else { + main_local->op_ret = -1; + main_local->op_errno = op_errno; + gf_log (this->name, GF_LOG_DEBUG, + "unlink of %s on %s failed (%s)", + local->loc.path, src->name, strerror (op_errno)); + } + + this_call_cnt = dht_frame_return (main_frame); + if (is_last_call (this_call_cnt)) + dht_rmdir_do (main_frame, this); + + DHT_STACK_DESTROY (frame); + return 0; } int -dht_xattrop (call_frame_t *frame, xlator_t *this, loc_t *loc, - gf_xattrop_flags_t flags, dict_t *dict) +dht_rmdir_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, inode_t *inode, + struct iatt *stbuf, dict_t *xattr, struct iatt *parent) { - xlator_t *subvol = NULL; - int op_errno = -1; - dht_local_t *local = NULL; + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + xlator_t *src = NULL; + call_frame_t *main_frame = NULL; + dht_local_t *main_local = NULL; + int this_call_cnt = 0; + dht_conf_t *conf = this->private; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); - - subvol = dht_subvol_get_cached (this, loc->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + local = frame->local; + prev = cookie; + src = prev->this; - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + main_frame = local->main_frame; + main_local = main_frame->local; - local->inode = inode_ref (loc->inode); - local->call_cnt = 1; + if (op_ret != 0) + goto err; - STACK_WIND (frame, - dht_xattrop_cbk, - subvol, subvol->fops->xattrop, - loc, flags, dict); + if (!check_is_linkfile (inode, stbuf, xattr, conf->link_xattr_name)) { + main_local->op_ret = -1; + main_local->op_errno = ENOTEMPTY; - return 0; + gf_log (this->name, GF_LOG_WARNING, + "%s on %s found to be not a linkfile (type=0%o)", + local->loc.path, src->name, stbuf->ia_type); + goto err; + } + STACK_WIND (frame, dht_rmdir_linkfile_unlink_cbk, + src, src->fops->unlink, &local->loc, 0, NULL); + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); - return 0; + this_call_cnt = dht_frame_return (main_frame); + if (is_last_call (this_call_cnt)) + dht_rmdir_do (main_frame, this); + + DHT_STACK_DESTROY (frame); + return 0; } int -dht_fxattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, dict_t *dict) +dht_rmdir_is_subvol_empty (call_frame_t *frame, xlator_t *this, + gf_dirent_t *entries, xlator_t *src) { - DHT_STACK_UNWIND (frame, op_ret, op_errno, dict); - return 0; -} + int ret = 0; + int build_ret = 0; + gf_dirent_t *trav = NULL; + call_frame_t *lookup_frame = NULL; + dht_local_t *lookup_local = NULL; + dht_local_t *local = NULL; + dict_t *xattrs = NULL; + dht_conf_t *conf = this->private; + local = frame->local; -int -dht_fxattrop (call_frame_t *frame, xlator_t *this, - fd_t *fd, gf_xattrop_flags_t flags, dict_t *dict) -{ - xlator_t *subvol = NULL; - int op_errno = -1; + list_for_each_entry (trav, &entries->list, list) { + if (strcmp (trav->d_name, ".") == 0) + continue; + if (strcmp (trav->d_name, "..") == 0) + continue; + if (check_is_linkfile (NULL, (&trav->d_stat), trav->dict, + conf->link_xattr_name)) { + ret++; + continue; + } - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); + /* this entry is either a directory which is neither "." nor "..", + or a non directory which is not a linkfile. the directory is to + be treated as non-empty + */ + return 0; + } - subvol = dht_subvol_get_cached (this, fd->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + xattrs = dict_new (); + if (!xattrs) { + gf_log (this->name, GF_LOG_ERROR, "dict_new failed"); + return -1; + } - STACK_WIND (frame, - dht_fxattrop_cbk, - subvol, subvol->fops->fxattrop, - fd, flags, dict); + ret = dict_set_uint32 (xattrs, conf->link_xattr_name, 256); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "failed to set linkto key" + " in dict"); + if (xattrs) + dict_unref (xattrs); + return -1; + } - return 0; + list_for_each_entry (trav, &entries->list, list) { + if (strcmp (trav->d_name, ".") == 0) + continue; + if (strcmp (trav->d_name, "..") == 0) + continue; + + lookup_frame = NULL; + lookup_local = NULL; + + lookup_frame = copy_frame (frame); + if (!lookup_frame) { + /* out of memory, let the rmdir fail + (as non-empty, unfortunately) */ + goto err; + } + lookup_local = mem_get0 (this->local_pool); + if (!lookup_local) { + goto err; + } + + lookup_frame->local = lookup_local; + lookup_local->main_frame = frame; + + build_ret = dht_build_child_loc (this, &lookup_local->loc, + &local->loc, trav->d_name); + if (build_ret != 0) + goto err; + + uuid_copy (lookup_local->loc.gfid, trav->d_stat.ia_gfid); + + gf_log (this->name, GF_LOG_TRACE, + "looking up %s on %s", + lookup_local->loc.path, src->name); + + LOCK (&frame->lock); + { + local->call_cnt++; + } + UNLOCK (&frame->lock); + + STACK_WIND (lookup_frame, dht_rmdir_lookup_cbk, + src, src->fops->lookup, + &lookup_local->loc, xattrs); + ret++; + } + + if (xattrs) + dict_unref (xattrs); + + return ret; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); + if (xattrs) + dict_unref (xattrs); - return 0; + DHT_STACK_DESTROY (lookup_frame); + return 0; } int -dht_inodelk_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno) - +dht_rmdir_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, gf_dirent_t *entries, + dict_t *xdata) { - DHT_STACK_UNWIND (frame, op_ret, op_errno); - return 0; + dht_local_t *local = NULL; + int this_call_cnt = -1; + call_frame_t *prev = NULL; + xlator_t *src = NULL; + int ret = 0; + + local = frame->local; + prev = cookie; + src = prev->this; + + if (op_ret > 2) { + ret = dht_rmdir_is_subvol_empty (frame, this, entries, src); + + switch (ret) { + case 0: /* non linkfiles exist */ + gf_log (this->name, GF_LOG_TRACE, + "readdir on %s for %s returned %d entries", + prev->this->name, local->loc.path, op_ret); + local->op_ret = -1; + local->op_errno = ENOTEMPTY; + break; + default: + /* @ret number of linkfiles are getting unlinked */ + gf_log (this->name, GF_LOG_TRACE, + "readdir on %s for %s found %d linkfiles", + prev->this->name, local->loc.path, ret); + break; + } + } + + this_call_cnt = dht_frame_return (frame); + + if (is_last_call (this_call_cnt)) { + dht_rmdir_do (frame, this); + } + + return 0; } -int32_t -dht_inodelk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, int32_t cmd, struct flock *lock) +int +dht_rmdir_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, fd_t *fd, dict_t *xdata) { - xlator_t *subvol = NULL; - int op_errno = -1; - dht_local_t *local = NULL; + dht_local_t *local = NULL; + int this_call_cnt = -1; + call_frame_t *prev = NULL; + dict_t *dict = NULL; + int ret = 0; + dht_conf_t *conf = this->private; + local = frame->local; + prev = cookie; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "opendir on %s for %s failed (%s)", + prev->this->name, local->loc.path, + strerror (op_errno)); + if (op_errno != ENOENT) { + local->op_ret = -1; + local->op_errno = op_errno; + } + goto err; + } - subvol = dht_subvol_get_cached (this, loc->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + dict = dict_new (); + if (!dict) { + local->op_ret = -1; + local->op_errno = ENOMEM; + goto err; + } - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + ret = dict_set_uint32 (dict, conf->link_xattr_name, 256); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to set '%s' key", + local->loc.path, conf->link_xattr_name); - local->inode = inode_ref (loc->inode); - local->call_cnt = 1; + STACK_WIND (frame, dht_rmdir_readdirp_cbk, + prev->this, prev->this->fops->readdirp, + local->fd, 4096, 0, dict); - STACK_WIND (frame, - dht_inodelk_cbk, - subvol, subvol->fops->inodelk, - volume, loc, cmd, lock); + if (dict) + dict_unref (dict); - return 0; + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno); - - return 0; -} - + this_call_cnt = dht_frame_return (frame); -int -dht_finodelk_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno) + if (is_last_call (this_call_cnt)) { + dht_rmdir_do (frame, this); + } -{ - DHT_STACK_UNWIND (frame, op_ret, op_errno); - return 0; + return 0; } int -dht_finodelk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, int32_t cmd, struct flock *lock) +dht_rmdir (call_frame_t *frame, xlator_t *this, loc_t *loc, int flags, + dict_t *xdata) { - xlator_t *subvol = NULL; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; int op_errno = -1; + int i = -1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (this->private, err); - subvol = dht_subvol_get_cached (this, fd->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + conf = this->private; + local = dht_local_init (frame, loc, NULL, GF_FOP_RMDIR); + if (!local) { + op_errno = ENOMEM; + goto err; + } - STACK_WIND (frame, - dht_finodelk_cbk, - subvol, subvol->fops->finodelk, - volume, fd, cmd, lock); + local->call_cnt = conf->subvolume_cnt; + local->op_ret = 0; + local->fop_succeeded = 0; - return 0; + local->flags = flags; + + local->fd = fd_create (local->loc.inode, frame->root->pid); + if (!local->fd) { + + op_errno = ENOMEM; + goto err; + } + + for (i = 0; i < conf->subvolume_cnt; i++) { + STACK_WIND (frame, dht_rmdir_opendir_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->opendir, + loc, local->fd, NULL); + } + + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (rmdir, frame, -1, op_errno, + NULL, NULL, NULL); - return 0; + return 0; } - int dht_entrylk_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno) + xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *xdata) { - DHT_STACK_UNWIND (frame, op_ret, op_errno); - return 0; + DHT_STACK_UNWIND (entrylk, frame, op_ret, op_errno, xdata); + return 0; } int dht_entrylk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, const char *basename, - entrylk_cmd cmd, entrylk_type type) + const char *volume, loc_t *loc, const char *basename, + entrylk_cmd cmd, entrylk_type type, dict_t *xdata) { - xlator_t *subvol = NULL; + xlator_t *subvol = NULL; int op_errno = -1; - dht_local_t *local = NULL; + dht_local_t *local = NULL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); - subvol = dht_subvol_get_cached (this, loc->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", loc->path); - op_errno = EINVAL; - goto err; - } + local = dht_local_init (frame, loc, NULL, GF_FOP_ENTRYLK); + if (!local) { + op_errno = ENOMEM; + goto err; + } - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } - local->inode = inode_ref (loc->inode); - local->call_cnt = 1; + local->call_cnt = 1; - STACK_WIND (frame, dht_entrylk_cbk, - subvol, subvol->fops->entrylk, - volume, loc, basename, cmd, type); + STACK_WIND (frame, dht_entrylk_cbk, + subvol, subvol->fops->entrylk, + volume, loc, basename, cmd, type, xdata); - return 0; + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (entrylk, frame, -1, op_errno, NULL); - return 0; + return 0; } int dht_fentrylk_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, int32_t op_errno) + xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *xdata) { - DHT_STACK_UNWIND (frame, op_ret, op_errno); - return 0; + DHT_STACK_UNWIND (fentrylk, frame, op_ret, op_errno, NULL); + return 0; } int dht_fentrylk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, const char *basename, - entrylk_cmd cmd, entrylk_type type) + const char *volume, fd_t *fd, const char *basename, + entrylk_cmd cmd, entrylk_type type, dict_t *xdata) { - xlator_t *subvol = NULL; + xlator_t *subvol = NULL; int op_errno = -1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); - subvol = dht_subvol_get_cached (this, fd->inode); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for fd=%p", fd); - op_errno = EINVAL; - goto err; - } + subvol = dht_subvol_get_cached (this, fd->inode); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } - STACK_WIND (frame, dht_fentrylk_cbk, - subvol, subvol->fops->fentrylk, - volume, fd, basename, cmd, type); + STACK_WIND (frame, dht_fentrylk_cbk, + subvol, subvol->fops->fentrylk, + volume, fd, basename, cmd, type, xdata); - return 0; + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (fentrylk, frame, -1, op_errno, NULL); - return 0; + return 0; } int dht_forget (xlator_t *this, inode_t *inode) { - uint64_t tmp_layout = 0; - dht_layout_t *layout = NULL; + uint64_t ctx_int = 0; + dht_inode_ctx_t *ctx = NULL; + dht_layout_t *layout = NULL; - inode_ctx_get (inode, this, &tmp_layout); + inode_ctx_del (inode, this, &ctx_int); - if (!tmp_layout) - return 0; + if (!ctx_int) + return 0; - layout = (dht_layout_t *)(long)tmp_layout; - if (!layout->preset) - FREE (layout); + ctx = (dht_inode_ctx_t *) (long) ctx_int; - return 0; -} + layout = ctx->layout; + ctx->layout = NULL; + dht_layout_unref (this, layout); + GF_FREE (ctx); + return 0; +} int -dht_init_subvolumes (xlator_t *this, dht_conf_t *conf) +dht_notify (xlator_t *this, int event, void *data, ...) { - xlator_list_t *subvols = NULL; - int cnt = 0; - + xlator_t *subvol = NULL; + int cnt = -1; + int i = -1; + dht_conf_t *conf = NULL; + int ret = -1; + int propagate = 0; + + int had_heard_from_all = 0; + int have_heard_from_all = 0; + struct timeval time = {0,}; + gf_defrag_info_t *defrag = NULL; + dict_t *dict = NULL; + gf_defrag_type cmd = 0; + dict_t *output = NULL; + va_list ap; - for (subvols = this->children; subvols; subvols = subvols->next) - cnt++; - conf->subvolumes = CALLOC (cnt, sizeof (xlator_t *)); - if (!conf->subvolumes) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - return -1; + conf = this->private; + if (!conf) + return ret; + + /* had all subvolumes reported status once till now? */ + had_heard_from_all = 1; + for (i = 0; i < conf->subvolume_cnt; i++) { + if (!conf->last_event[i]) { + had_heard_from_all = 0; + } } - conf->subvolume_cnt = cnt; - cnt = 0; - for (subvols = this->children; subvols; subvols = subvols->next) - conf->subvolumes[cnt++] = subvols->xlator; + switch (event) { + case GF_EVENT_CHILD_UP: + subvol = data; - conf->subvolume_status = CALLOC (cnt, sizeof (char)); - if (!conf->subvolume_status) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - return -1; - } + conf->gen++; - return 0; -} + for (i = 0; i < conf->subvolume_cnt; i++) { + if (subvol == conf->subvolumes[i]) { + cnt = i; + break; + } + } + if (cnt == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "got GF_EVENT_CHILD_UP bad subvolume %s", + subvol->name); + break; + } -int -dht_notify (xlator_t *this, int event, void *data, ...) -{ - xlator_t *subvol = NULL; - int cnt = -1; - int i = -1; - dht_conf_t *conf = NULL; - int ret = -1; + gettimeofday (&time, NULL); + LOCK (&conf->subvolume_lock); + { + conf->subvolume_status[cnt] = 1; + conf->last_event[cnt] = event; + conf->subvol_up_time[cnt] = time.tv_sec; + } + UNLOCK (&conf->subvolume_lock); + /* one of the node came back up, do a stat update */ + dht_get_du_info_for_subvol (this, cnt); - conf = this->private; + break; - switch (event) { - case GF_EVENT_CHILD_UP: - subvol = data; + case GF_EVENT_CHILD_MODIFIED: + subvol = data; - conf->gen++; + conf->gen++; + propagate = 1; - for (i = 0; i < conf->subvolume_cnt; i++) { - if (subvol == conf->subvolumes[i]) { - cnt = i; - break; - } - } + break; - if (cnt == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "got GF_EVENT_CHILD_UP bad subvolume %s", - subvol->name); - break; - } + case GF_EVENT_CHILD_DOWN: + subvol = data; - LOCK (&conf->subvolume_lock); - { - conf->subvolume_status[cnt] = 1; - } - UNLOCK (&conf->subvolume_lock); + if (conf->assert_no_child_down) { + gf_log (this->name, GF_LOG_WARNING, + "Received CHILD_DOWN. Exiting"); + if (conf->defrag) { + gf_defrag_stop (conf->defrag, NULL); + } else { + kill (getpid(), SIGTERM); + } + } - /* one of the node came back up, do a stat update */ - dht_get_du_info_for_subvol (this, cnt); + for (i = 0; i < conf->subvolume_cnt; i++) { + if (subvol == conf->subvolumes[i]) { + cnt = i; + break; + } + } - break; + if (cnt == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "got GF_EVENT_CHILD_DOWN bad subvolume %s", + subvol->name); + break; + } - case GF_EVENT_CHILD_DOWN: - subvol = data; + LOCK (&conf->subvolume_lock); + { + conf->subvolume_status[cnt] = 0; + conf->last_event[cnt] = event; + conf->subvol_up_time[cnt] = 0; + } + UNLOCK (&conf->subvolume_lock); - for (i = 0; i < conf->subvolume_cnt; i++) { - if (subvol == conf->subvolumes[i]) { - cnt = i; - break; - } - } + break; - if (cnt == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "got GF_EVENT_CHILD_DOWN bad subvolume %s", - subvol->name); - break; - } + case GF_EVENT_CHILD_CONNECTING: + subvol = data; - LOCK (&conf->subvolume_lock); - { - conf->subvolume_status[cnt] = 0; - } - UNLOCK (&conf->subvolume_lock); + for (i = 0; i < conf->subvolume_cnt; i++) { + if (subvol == conf->subvolumes[i]) { + cnt = i; + break; + } + } - break; - } + if (cnt == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "got GF_EVENT_CHILD_CONNECTING bad subvolume %s", + subvol->name); + break; + } - ret = default_notify (this, event, data); + LOCK (&conf->subvolume_lock); + { + conf->last_event[cnt] = event; + } + UNLOCK (&conf->subvolume_lock); + + break; + case GF_EVENT_VOLUME_DEFRAG: + { + if (!conf->defrag) { + return ret; + } + defrag = conf->defrag; + + dict = data; + va_start (ap, data); + output = va_arg (ap, dict_t*); + + ret = dict_get_int32 (dict, "rebalance-command", + (int32_t*)&cmd); + if (ret) + return ret; + LOCK (&defrag->lock); + { + if (defrag->is_exiting) + goto unlock; + if (cmd == GF_DEFRAG_CMD_STATUS) + gf_defrag_status_get (defrag, output); + else if (cmd == GF_DEFRAG_CMD_STOP) + gf_defrag_stop (defrag, output); + } +unlock: + UNLOCK (&defrag->lock); + return 0; + break; + } - return ret; + default: + propagate = 1; + break; + } + + + /* have all subvolumes reported status once by now? */ + have_heard_from_all = 1; + for (i = 0; i < conf->subvolume_cnt; i++) { + if (!conf->last_event[i]) + have_heard_from_all = 0; + } + + /* if all subvols have reported status, no need to hide anything + or wait for anything else. Just propagate blindly */ + if (have_heard_from_all) { + propagate = 1; + + } + + + if (!had_heard_from_all && have_heard_from_all) { + /* This is the first event which completes aggregation + of events from all subvolumes. If at least one subvol + had come up, propagate CHILD_UP, but only this time + */ + event = GF_EVENT_CHILD_DOWN; + + for (i = 0; i < conf->subvolume_cnt; i++) { + if (conf->last_event[i] == GF_EVENT_CHILD_UP) { + event = GF_EVENT_CHILD_UP; + break; + } + + if (conf->last_event[i] == GF_EVENT_CHILD_CONNECTING) { + event = GF_EVENT_CHILD_CONNECTING; + /* continue to check other events for CHILD_UP */ + } + } + + /* rebalance is started with assert_no_child_down. So we do + * not need to handle CHILD_DOWN event here. + */ + if (conf->defrag) { + ret = gf_thread_create (&conf->defrag->th, NULL, + gf_defrag_start, this); + if (ret) { + conf->defrag = NULL; + GF_FREE (conf->defrag); + kill (getpid(), SIGTERM); + } + } + } + + ret = 0; + if (propagate) + ret = default_notify (this, event, data); + + return ret; } +int +dht_inode_ctx_layout_get (inode_t *inode, xlator_t *this, dht_layout_t **layout) +{ + dht_inode_ctx_t *ctx = NULL; + int ret = -1; + + ret = dht_inode_ctx_get (inode, this, &ctx); + + if (!ret && ctx) { + if (ctx->layout) { + if (layout) + *layout = ctx->layout; + ret = 0; + } else { + ret = -1; + } + } + + return ret; +} diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h index 63a8bb213..5ccd66799 100644 --- a/xlators/cluster/dht/src/dht-common.h +++ b/xlators/cluster/dht/src/dht-common.h @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef _CONFIG_H @@ -22,221 +13,775 @@ #include "config.h" #endif +#include <regex.h> + +#include "dht-mem-types.h" +#include "libxlator.h" +#include "syncop.h" + #ifndef _DHT_H #define _DHT_H +#define GF_XATTR_FIX_LAYOUT_KEY "distribute.fix.layout" +#define GF_DHT_LOOKUP_UNHASHED_ON 1 +#define GF_DHT_LOOKUP_UNHASHED_AUTO 2 +#define DHT_PATHINFO_HEADER "DISTRIBUTE:" + +#include <fnmatch.h> typedef int (*dht_selfheal_dir_cbk_t) (call_frame_t *frame, void *cookie, - xlator_t *this, - int32_t op_ret, int32_t op_errno); + xlator_t *this, + int32_t op_ret, int32_t op_errno, + dict_t *xdata); +typedef int (*dht_defrag_cbk_fn_t) (xlator_t *this, call_frame_t *frame, + int ret); struct dht_layout { - int cnt; - int preset; - int gen; - int type; + int spread_cnt; /* layout spread count per directory, + is controlled by 'setxattr()' with + special key */ + int cnt; + int preset; + int gen; + int type; + int ref; /* use with dht_conf_t->layout_lock */ + int search_unhashed; struct { - int err; /* 0 = normal - -1 = dir exists and no xattr - >0 = dir lookup failed with errno - */ - uint32_t start; - uint32_t stop; - xlator_t *xlator; - } list[0]; + int err; /* 0 = normal + -1 = dir exists and no xattr + >0 = dir lookup failed with errno + */ + uint32_t start; + uint32_t stop; + xlator_t *xlator; + } list[]; }; -typedef struct dht_layout dht_layout_t; +typedef struct dht_layout dht_layout_t; + +struct dht_stat_time { + uint32_t atime; + uint32_t atime_nsec; + uint32_t ctime; + uint32_t ctime_nsec; + uint32_t mtime; + uint32_t mtime_nsec; +}; + +typedef struct dht_stat_time dht_stat_time_t; +struct dht_inode_ctx { + dht_layout_t *layout; + dht_stat_time_t time; +}; + +typedef struct dht_inode_ctx dht_inode_ctx_t; + + +typedef enum { + DHT_HASH_TYPE_DM, + DHT_HASH_TYPE_DM_USER, +} dht_hashfn_type_t; + +/* rebalance related */ +struct dht_rebalance_ { + xlator_t *from_subvol; + xlator_t *target_node; + off_t offset; + size_t size; + int32_t flags; + int count; + struct iobref *iobref; + struct iovec *vector; + struct iatt stbuf; + dht_defrag_cbk_fn_t target_op_fn; + dict_t *xdata; +}; struct dht_local { - int call_cnt; - loc_t loc; - loc_t loc2; - int op_ret; - int op_errno; - int layout_mismatch; - struct stat stbuf; - struct statvfs statvfs; - fd_t *fd; - inode_t *inode; - dict_t *xattr; - dict_t *xattr_req; - dht_layout_t *layout; - size_t size; - ino_t st_ino; - xlator_t *src_hashed, *src_cached; - xlator_t *dst_hashed, *dst_cached; - xlator_t *cached_subvol; - xlator_t *hashed_subvol; - char need_selfheal; + int call_cnt; + loc_t loc; + loc_t loc2; + int op_ret; + int op_errno; + int layout_mismatch; + /* Use stbuf as the postbuf, when we require both + * pre and post attrs */ + struct iatt stbuf; + struct iatt prebuf; + struct iatt preoldparent; + struct iatt postoldparent; + struct iatt preparent; + struct iatt postparent; + struct statvfs statvfs; + fd_t *fd; + inode_t *inode; + dict_t *params; + dict_t *xattr; + dict_t *xattr_req; + dht_layout_t *layout; + size_t size; + ino_t ia_ino; + xlator_t *src_hashed, *src_cached; + xlator_t *dst_hashed, *dst_cached; + xlator_t *cached_subvol; + xlator_t *hashed_subvol; + char need_selfheal; int file_count; int dir_count; - struct { - fop_mknod_cbk_t linkfile_cbk; - struct stat stbuf; - loc_t loc; - inode_t *inode; - dict_t *xattr; - xlator_t *srcvol; - } linkfile; - struct { - uint32_t hole_cnt; - uint32_t overlaps_cnt; - uint32_t missing; - uint32_t down; - uint32_t misc; - dht_selfheal_dir_cbk_t dir_cbk; - dht_layout_t *layout; - } selfheal; - - /* needed by nufa */ - int32_t flags; - mode_t mode; - dev_t rdev; + call_frame_t *main_frame; + int fop_succeeded; + struct { + fop_mknod_cbk_t linkfile_cbk; + struct iatt stbuf; + loc_t loc; + inode_t *inode; + dict_t *xattr; + xlator_t *srcvol; + } linkfile; + struct { + uint32_t hole_cnt; + uint32_t overlaps_cnt; + uint32_t down; + uint32_t misc; + dht_selfheal_dir_cbk_t dir_cbk; + dht_layout_t *layout; + } selfheal; + uint32_t uid; + uint32_t gid; + + /* needed by nufa */ + int32_t flags; + mode_t mode; + dev_t rdev; + mode_t umask; + + /* need for file-info */ + char *xattr_val; + char *key; + + /* which xattr request? */ + char xsel[256]; + int32_t alloc_len; + + char *newpath; + + /* gfid related */ + uuid_t gfid; + + /*Marker Related*/ + struct marker_str marker; + + /* flag used to make sure we need to return estale in + {lookup,revalidate}_cbk */ + char return_estale; + char need_lookup_everywhere; + + glusterfs_fop_t fop; + + gf_boolean_t linked; + xlator_t *link_subvol; + + struct dht_rebalance_ rebalance; + xlator_t *first_up_subvol; + }; typedef struct dht_local dht_local_t; /* du - disk-usage */ struct dht_du { double avail_percent; + double avail_inodes; uint64_t avail_space; uint32_t log; }; typedef struct dht_du dht_du_t; +enum gf_defrag_type { + GF_DEFRAG_CMD_START = 1, + GF_DEFRAG_CMD_STOP = 1 + 1, + GF_DEFRAG_CMD_STATUS = 1 + 2, + GF_DEFRAG_CMD_START_LAYOUT_FIX = 1 + 3, + GF_DEFRAG_CMD_START_FORCE = 1 + 4, +}; +typedef enum gf_defrag_type gf_defrag_type; + +enum gf_defrag_status_t { + GF_DEFRAG_STATUS_NOT_STARTED, + GF_DEFRAG_STATUS_STARTED, + GF_DEFRAG_STATUS_STOPPED, + GF_DEFRAG_STATUS_COMPLETE, + GF_DEFRAG_STATUS_FAILED, + GF_DEFRAG_STATUS_LAYOUT_FIX_STARTED, + GF_DEFRAG_STATUS_LAYOUT_FIX_STOPPED, + GF_DEFRAG_STATUS_LAYOUT_FIX_COMPLETE, + GF_DEFRAG_STATUS_LAYOUT_FIX_FAILED, +}; +typedef enum gf_defrag_status_t gf_defrag_status_t; + +typedef struct gf_defrag_pattern_list gf_defrag_pattern_list_t; + +struct gf_defrag_pattern_list { + char path_pattern[256]; + uint64_t size; + gf_defrag_pattern_list_t *next; +}; + +struct gf_defrag_info_ { + uint64_t total_files; + uint64_t total_data; + uint64_t num_files_lookedup; + uint64_t total_failures; + uint64_t skipped; + gf_lock_t lock; + int cmd; + pthread_t th; + gf_defrag_status_t defrag_status; + struct rpc_clnt *rpc; + uint32_t connected; + uint32_t is_exiting; + pid_t pid; + inode_t *root_inode; + uuid_t node_uuid; + struct timeval start_time; + gf_boolean_t stats; + gf_defrag_pattern_list_t *defrag_pattern; +}; + +typedef struct gf_defrag_info_ gf_defrag_info_t; + struct dht_conf { - gf_lock_t subvolume_lock; + gf_lock_t subvolume_lock; int subvolume_cnt; xlator_t **subvolumes; - xlator_t *local_volume; /* Needed by NUFA */ - char *subvolume_status; - dht_layout_t **file_layouts; - dht_layout_t **dir_layouts; - dht_layout_t *default_dir_layout; - gf_boolean_t search_unhashed; - int gen; + char *subvolume_status; + int *last_event; + dht_layout_t **file_layouts; + dht_layout_t **dir_layouts; + gf_boolean_t search_unhashed; + int gen; dht_du_t *du_stats; - uint32_t min_free_disk; + double min_free_disk; + double min_free_inodes; + char disk_unit; int32_t refresh_interval; gf_boolean_t unhashed_sticky_bit; - struct timeval last_stat_fetch; + struct timeval last_stat_fetch; + gf_lock_t layout_lock; + void *private; /* Can be used by wrapper xlators over + dht */ + gf_boolean_t use_readdirp; + char vol_uuid[UUID_SIZE + 1]; + gf_boolean_t assert_no_child_down; + time_t *subvol_up_time; + + /* This is the count used as the distribute layout for a directory */ + /* Will be a global flag to control the layout spread count */ + uint32_t dir_spread_cnt; + + /* to keep track of nodes which are decomissioned */ + xlator_t **decommissioned_bricks; + int decommission_in_progress; + int decommission_subvols_cnt; + + /* defrag related */ + gf_defrag_info_t *defrag; + + /* Request to filter directory entries in readdir request */ + + gf_boolean_t readdir_optimize; + + /* Support regex-based name reinterpretation. */ + regex_t rsync_regex; + gf_boolean_t rsync_regex_valid; + regex_t extra_regex; + gf_boolean_t extra_regex_valid; + + /* Support variable xattr names. */ + char *xattr_name; + char *link_xattr_name; + char *wild_xattr_name; }; typedef struct dht_conf dht_conf_t; struct dht_disk_layout { - uint32_t cnt; - uint32_t type; - struct { - uint32_t start; - uint32_t stop; - } list[1]; + uint32_t cnt; + uint32_t type; + struct { + uint32_t start; + uint32_t stop; + } list[1]; }; typedef struct dht_disk_layout dht_disk_layout_t; - -#define ENTRY_MISSING(op_ret, op_errno) (op_ret == -1 && op_errno == ENOENT) -#define is_fs_root(loc) (strcmp (loc->path, "/") == 0) +typedef enum { + GF_DHT_MIGRATE_DATA, + GF_DHT_MIGRATE_DATA_EVEN_IF_LINK_EXISTS, + GF_DHT_MIGRATE_HARDLINK, + GF_DHT_MIGRATE_HARDLINK_IN_PROGRESS +} gf_dht_migrate_data_type_t; + +#define ENTRY_MISSING(op_ret, op_errno) (op_ret == -1 && op_errno == ENOENT) -#define is_revalidate(loc) (inode_ctx_get (loc->inode, this, NULL) == 0) +#define is_revalidate(loc) (dht_inode_ctx_layout_get (loc->inode, this, NULL) == 0) #define is_last_call(cnt) (cnt == 0) -#define DHT_LINKFILE_MODE (S_ISVTX) -#define check_is_linkfile(i,s,x) ((s->st_mode & ~S_IFMT) == DHT_LINKFILE_MODE) +#define DHT_MIGRATION_IN_PROGRESS 1 +#define DHT_MIGRATION_COMPLETED 2 + +#define DHT_LINKFILE_MODE (S_ISVTX) + +#define check_is_linkfile(i,s,x,n) ( \ + ((st_mode_from_ia ((s)->ia_prot, (s)->ia_type) & ~S_IFMT) \ + == DHT_LINKFILE_MODE) && \ + dict_get (x, n)) + +#define IS_DHT_MIGRATION_PHASE2(buf) ( \ + IA_ISREG ((buf)->ia_type) && \ + ((st_mode_from_ia ((buf)->ia_prot, (buf)->ia_type) & \ + ~S_IFMT) == DHT_LINKFILE_MODE)) -#define check_is_dir(i,s,x) (S_ISDIR(s->st_mode)) +#define IS_DHT_MIGRATION_PHASE1(buf) ( \ + IA_ISREG ((buf)->ia_type) && \ + ((buf)->ia_prot.sticky == 1) && \ + ((buf)->ia_prot.sgid == 1)) + +#define DHT_STRIP_PHASE1_FLAGS(buf) do { \ + if ((buf) && IS_DHT_MIGRATION_PHASE1(buf)) { \ + (buf)->ia_prot.sticky = 0; \ + (buf)->ia_prot.sgid = 0; \ + } \ + } while (0) + +#define check_is_dir(i,s,x) (IA_ISDIR(s->ia_type)) #define layout_is_sane(layout) ((layout) && (layout->cnt > 0)) -#define DHT_STACK_UNWIND(frame, params ...) do { \ - dht_local_t *__local = NULL; \ - __local = frame->local; \ - frame->local = NULL; \ - STACK_UNWIND (frame, params); \ - dht_local_wipe (__local); \ - } while (0) - -#define DHT_STACK_DESTROY(frame) do { \ - dht_local_t *__local = NULL; \ - __local = frame->local; \ - frame->local = NULL; \ - STACK_DESTROY (frame->root); \ - dht_local_wipe (__local); \ - } while (0) - -dht_layout_t *dht_layout_new (xlator_t *this, int cnt); -dht_layout_t *dht_layout_get (xlator_t *this, inode_t *inode); -dht_layout_t *dht_layout_for_subvol (xlator_t *this, xlator_t *subvol); -xlator_t *dht_layout_search (xlator_t *this, dht_layout_t *layout, - const char *name); -int dht_layout_normalize (xlator_t *this, loc_t *loc, dht_layout_t *layout); -int dht_layout_anomalies (xlator_t *this, loc_t *loc, dht_layout_t *layout, - uint32_t *holes_p, uint32_t *overlaps_p, - uint32_t *missing_p, uint32_t *down_p, - uint32_t *misc_p); -int dht_layout_dir_mismatch (xlator_t *this, dht_layout_t *layout, - xlator_t *subvol, loc_t *loc, dict_t *xattr); +#define DHT_STACK_UNWIND(fop, frame, params ...) do { \ + dht_local_t *__local = NULL; \ + xlator_t *__xl = NULL; \ + if (frame) { \ + __xl = frame->this; \ + __local = frame->local; \ + frame->local = NULL; \ + } \ + STACK_UNWIND_STRICT (fop, frame, params); \ + dht_local_wipe (__xl, __local); \ + } while (0) + +#define DHT_STACK_DESTROY(frame) do { \ + dht_local_t *__local = NULL; \ + xlator_t *__xl = NULL; \ + __xl = frame->this; \ + __local = frame->local; \ + frame->local = NULL; \ + STACK_DESTROY (frame->root); \ + dht_local_wipe (__xl, __local); \ + } while (0) + +#define DHT_UPDATE_TIME(ctx_sec, ctx_nsec, new_sec, new_nsec, inode, post) do {\ + int32_t sec = 0; \ + sec = new_sec; \ + LOCK (&inode->lock); \ + { \ + new_sec = max(new_sec, ctx_sec); \ + if (sec < new_sec) \ + new_nsec = ctx_nsec; \ + if (sec == new_sec) \ + new_nsec = max (new_nsec, ctx_nsec); \ + if (post) { \ + ctx_sec = new_sec; \ + ctx_nsec = new_nsec; \ + } \ + } \ + UNLOCK (&inode->lock); \ + } while (0) + +#define is_greater_time(a, an, b, bn) (((a) < (b)) || (((a) == (b)) && ((an) < (bn)))) +dht_layout_t *dht_layout_new (xlator_t *this, int cnt); +dht_layout_t *dht_layout_get (xlator_t *this, inode_t *inode); +dht_layout_t *dht_layout_for_subvol (xlator_t *this, xlator_t *subvol); +xlator_t *dht_layout_search (xlator_t *this, dht_layout_t *layout, + const char *name); +int dht_layout_normalize (xlator_t *this, loc_t *loc, dht_layout_t *layout); +int dht_layout_anomalies (xlator_t *this, loc_t *loc, dht_layout_t *layout, + uint32_t *holes_p, uint32_t *overlaps_p, + uint32_t *missing_p, uint32_t *down_p, + uint32_t *misc_p, uint32_t *no_space_p); +int dht_layout_dir_mismatch (xlator_t *this, dht_layout_t *layout, + xlator_t *subvol, loc_t *loc, dict_t *xattr); xlator_t *dht_linkfile_subvol (xlator_t *this, inode_t *inode, - struct stat *buf, dict_t *xattr); -int dht_linkfile_unlink (call_frame_t *frame, xlator_t *this, - xlator_t *subvol, loc_t *loc); + struct iatt *buf, dict_t *xattr); +int dht_linkfile_unlink (call_frame_t *frame, xlator_t *this, + xlator_t *subvol, loc_t *loc); int dht_layouts_init (xlator_t *this, dht_conf_t *conf); int dht_layout_merge (xlator_t *this, dht_layout_t *layout, xlator_t *subvol, - int op_ret, int op_errno, dict_t *xattr); + int op_ret, int op_errno, dict_t *xattr); int dht_disk_layout_extract (xlator_t *this, dht_layout_t *layout, - int pos, int32_t **disk_layout_p); -int dht_disk_layout_merge (xlator_t *this, dht_layout_t *layout, - int pos, int32_t *disk_layout); + int pos, int32_t **disk_layout_p); +int dht_disk_layout_merge (xlator_t *this, dht_layout_t *layout, + int pos, void *disk_layout_raw, int disk_layout_len); int dht_frame_return (call_frame_t *frame); -int dht_itransform (xlator_t *this, xlator_t *subvol, uint64_t x, uint64_t *y); +int dht_itransform (xlator_t *this, xlator_t *subvol, uint64_t x, uint64_t *y); int dht_deitransform (xlator_t *this, uint64_t y, xlator_t **subvol, - uint64_t *x); + uint64_t *x); -void dht_local_wipe (dht_local_t *local); -dht_local_t *dht_local_init (call_frame_t *frame); -int dht_stat_merge (xlator_t *this, struct stat *to, struct stat *from, - xlator_t *subvol); +void dht_local_wipe (xlator_t *this, dht_local_t *local); +dht_local_t *dht_local_init (call_frame_t *frame, loc_t *loc, fd_t *fd, + glusterfs_fop_t fop); +int dht_iatt_merge (xlator_t *this, struct iatt *to, struct iatt *from, + xlator_t *subvol); xlator_t *dht_subvol_get_hashed (xlator_t *this, loc_t *loc); xlator_t *dht_subvol_get_cached (xlator_t *this, inode_t *inode); xlator_t *dht_subvol_next (xlator_t *this, xlator_t *prev); -int dht_subvol_cnt (xlator_t *this, xlator_t *subvol); +xlator_t *dht_subvol_next_available (xlator_t *this, xlator_t *prev); +int dht_subvol_cnt (xlator_t *this, xlator_t *subvol); -int dht_hash_compute (int type, const char *name, uint32_t *hash_p); +int dht_hash_compute (xlator_t *this, int type, const char *name, uint32_t *hash_p); -int dht_linkfile_create (call_frame_t *frame, fop_mknod_cbk_t linkfile_cbk, - xlator_t *tovol, xlator_t *fromvol, loc_t *loc); -int dht_lookup_directory (call_frame_t *frame, xlator_t *this, loc_t *loc); -int dht_lookup_everywhere (call_frame_t *frame, xlator_t *this, loc_t *loc); +int dht_linkfile_create (call_frame_t *frame, fop_mknod_cbk_t linkfile_cbk, + xlator_t *this, xlator_t *tovol, + xlator_t *fromvol, loc_t *loc); +int dht_lookup_directory (call_frame_t *frame, xlator_t *this, loc_t *loc); +int dht_lookup_everywhere (call_frame_t *frame, xlator_t *this, loc_t *loc); int -dht_selfheal_directory (call_frame_t *frame, dht_selfheal_dir_cbk_t cbk, - loc_t *loc, dht_layout_t *layout); +dht_selfheal_directory (call_frame_t *frame, dht_selfheal_dir_cbk_t cbk, + loc_t *loc, dht_layout_t *layout); int dht_selfheal_new_directory (call_frame_t *frame, dht_selfheal_dir_cbk_t cbk, - dht_layout_t *layout); + dht_layout_t *layout); int -dht_selfheal_restore (call_frame_t *frame, dht_selfheal_dir_cbk_t cbk, - loc_t *loc, dht_layout_t *layout); +dht_selfheal_restore (call_frame_t *frame, dht_selfheal_dir_cbk_t cbk, + loc_t *loc, dht_layout_t *layout); int dht_layout_sort_volname (dht_layout_t *layout); -int dht_rename (call_frame_t *frame, xlator_t *this, - loc_t *oldloc, loc_t *newloc); - int dht_get_du_info (call_frame_t *frame, xlator_t *this, loc_t *loc); -int dht_is_subvol_filled (xlator_t *this, xlator_t *subvol); -xlator_t *dht_free_disk_available_subvol (xlator_t *this, xlator_t *subvol); -int dht_get_du_info_for_subvol (xlator_t *this, int subvol_idx); +gf_boolean_t dht_is_subvol_filled (xlator_t *this, xlator_t *subvol); +xlator_t *dht_free_disk_available_subvol (xlator_t *this, xlator_t *subvol, + dht_local_t *layout); +int dht_get_du_info_for_subvol (xlator_t *this, int subvol_idx); + +int dht_layout_preset (xlator_t *this, xlator_t *subvol, inode_t *inode); +int dht_layout_set (xlator_t *this, inode_t *inode, dht_layout_t *layout);; +void dht_layout_unref (xlator_t *this, dht_layout_t *layout); +dht_layout_t *dht_layout_ref (xlator_t *this, dht_layout_t *layout); +xlator_t *dht_first_up_subvol (xlator_t *this); +xlator_t *dht_last_up_subvol (xlator_t *this); + +int dht_build_child_loc (xlator_t *this, loc_t *child, loc_t *parent, char *name); + +int dht_filter_loc_subvol_key (xlator_t *this, loc_t *loc, loc_t *new_loc, + xlator_t **subvol); + +int dht_rename_cleanup (call_frame_t *frame); +int dht_rename_links_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata); + +int dht_fix_directory_layout (call_frame_t *frame, + dht_selfheal_dir_cbk_t dir_cbk, + dht_layout_t *layout); + +int dht_init_subvolumes (xlator_t *this, dht_conf_t *conf); + +/* migration/rebalance */ +int dht_start_rebalance_task (xlator_t *this, call_frame_t *frame); + +int dht_rebalance_in_progress_check (xlator_t *this, call_frame_t *frame); +int dht_rebalance_complete_check (xlator_t *this, call_frame_t *frame); + + +/* FOPS */ +int32_t dht_lookup (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + dict_t *xattr_req); + +int32_t dht_stat (call_frame_t *frame, + xlator_t *this, + loc_t *loc, dict_t *xdata); + +int32_t dht_fstat (call_frame_t *frame, + xlator_t *this, + fd_t *fd, dict_t *xdata); + +int32_t dht_truncate (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + off_t offset, dict_t *xdata); + +int32_t dht_ftruncate (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + off_t offset, dict_t *xdata); + +int32_t dht_access (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + int32_t mask, dict_t *xdata); + +int32_t dht_readlink (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + size_t size, dict_t *xdata); + +int32_t dht_mknod (call_frame_t *frame, xlator_t *this, loc_t *loc, + mode_t mode, dev_t rdev, mode_t umask, dict_t *xdata); + +int32_t dht_mkdir (call_frame_t *frame, xlator_t *this, + loc_t *loc, mode_t mode, mode_t umask, dict_t *xdata); + +int32_t dht_unlink (call_frame_t *frame, + xlator_t *this, + loc_t *loc, int xflag, dict_t *xdata); + +int32_t dht_rmdir (call_frame_t *frame, xlator_t *this, + loc_t *loc, int flags, dict_t *xdata); + +int32_t dht_symlink (call_frame_t *frame, xlator_t *this, + const char *linkpath, loc_t *loc, mode_t umask, + dict_t *xdata); + +int32_t dht_rename (call_frame_t *frame, + xlator_t *this, + loc_t *oldloc, + loc_t *newloc, dict_t *xdata); + +int32_t dht_link (call_frame_t *frame, + xlator_t *this, + loc_t *oldloc, + loc_t *newloc, dict_t *xdata); + +int32_t dht_create (call_frame_t *frame, xlator_t *this, + loc_t *loc, int32_t flags, mode_t mode, + mode_t umask, fd_t *fd, dict_t *params); + +int32_t dht_open (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + int32_t flags, fd_t *fd, dict_t *xdata); + +int32_t dht_readv (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + size_t size, + off_t offset, uint32_t flags, dict_t *xdata); + +int32_t dht_writev (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + struct iovec *vector, + int32_t count, + off_t offset, + uint32_t flags, + struct iobref *iobref, dict_t *xdata); + +int32_t dht_flush (call_frame_t *frame, + xlator_t *this, + fd_t *fd, dict_t *xdata); + +int32_t dht_fsync (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + int32_t datasync, dict_t *xdata); + +int32_t dht_opendir (call_frame_t *frame, + xlator_t *this, + loc_t *loc, fd_t *fd, dict_t *xdata); + +int32_t dht_fsyncdir (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + int32_t datasync, dict_t *xdata); + +int32_t dht_statfs (call_frame_t *frame, + xlator_t *this, + loc_t *loc, dict_t *xdata); + +int32_t dht_setxattr (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + dict_t *dict, + int32_t flags, dict_t *xdata); + +int32_t dht_getxattr (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + const char *name, dict_t *xdata); + +int32_t dht_fsetxattr (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + dict_t *dict, + int32_t flags, dict_t *xdata); + +int32_t dht_fgetxattr (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + const char *name, dict_t *xdata); + +int32_t dht_removexattr (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + const char *name, dict_t *xdata); +int32_t dht_fremovexattr (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + const char *name, dict_t *xdata); + +int32_t dht_lk (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + int32_t cmd, + struct gf_flock *flock, dict_t *xdata); + +int32_t dht_inodelk (call_frame_t *frame, xlator_t *this, + const char *volume, loc_t *loc, int32_t cmd, + struct gf_flock *flock, dict_t *xdata); + +int32_t dht_finodelk (call_frame_t *frame, xlator_t *this, + const char *volume, fd_t *fd, int32_t cmd, + struct gf_flock *flock, dict_t *xdata); + +int32_t dht_entrylk (call_frame_t *frame, xlator_t *this, + const char *volume, loc_t *loc, const char *basename, + entrylk_cmd cmd, entrylk_type type, dict_t *xdata); + +int32_t dht_fentrylk (call_frame_t *frame, xlator_t *this, + const char *volume, fd_t *fd, const char *basename, + entrylk_cmd cmd, entrylk_type type, dict_t *xdata); + +int32_t dht_readdir (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + size_t size, off_t off, dict_t *xdata); + +int32_t dht_readdirp (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + size_t size, off_t off, dict_t *dict); + +int32_t dht_xattrop (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + gf_xattrop_flags_t flags, + dict_t *dict, dict_t *xdata); + +int32_t dht_fxattrop (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + gf_xattrop_flags_t flags, + dict_t *dict, dict_t *xdata); + +int32_t dht_forget (xlator_t *this, inode_t *inode); +int32_t dht_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc, + struct iatt *stbuf, int32_t valid, dict_t *xdata); +int32_t dht_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd, + struct iatt *stbuf, int32_t valid, dict_t *xdata); +int32_t dht_fallocate(call_frame_t *frame, xlator_t *this, fd_t *fd, + int32_t mode, off_t offset, size_t len, dict_t *xdata); +int32_t dht_discard(call_frame_t *frame, xlator_t *this, fd_t *fd, + off_t offset, size_t len, dict_t *xdata); +int32_t dht_zerofill(call_frame_t *frame, xlator_t *this, fd_t *fd, + off_t offset, size_t len, dict_t *xdata); + +int32_t dht_init (xlator_t *this); +void dht_fini (xlator_t *this); +int dht_reconfigure (xlator_t *this, dict_t *options); +int32_t dht_notify (xlator_t *this, int32_t event, void *data, ...); + +/* definitions for nufa/switch */ +int dht_revalidate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, inode_t *inode, + struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent); +int dht_lookup_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, inode_t *inode, + struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent); +int dht_lookup_linkfile_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent); +int dht_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent); +int dht_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, + fd_t *fd, inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata); +int dht_newfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata); + +int +gf_defrag_status_get (gf_defrag_info_t *defrag, dict_t *dict); + +int +gf_defrag_stop (gf_defrag_info_t *defrag, dict_t *output); + +void* +gf_defrag_start (void *this); + +int32_t +gf_defrag_handle_hardlink (xlator_t *this, loc_t *loc, dict_t *xattrs, + struct iatt *stbuf); +int +dht_migrate_file (xlator_t *this, loc_t *loc, xlator_t *from, xlator_t *to, + int flag); +int +dht_inode_ctx_layout_get (inode_t *inode, xlator_t *this, + dht_layout_t **layout_int); +int +dht_inode_ctx_layout_set (inode_t *inode, xlator_t *this, + dht_layout_t* layout_int); +int +dht_inode_ctx_time_update (inode_t *inode, xlator_t *this, struct iatt *stat, + int32_t update_ctx); -int dht_layout_inode_set (xlator_t *this, xlator_t *subvol, inode_t *inode); +int dht_inode_ctx_get (inode_t *inode, xlator_t *this, dht_inode_ctx_t **ctx); +int dht_inode_ctx_set (inode_t *inode, xlator_t *this, dht_inode_ctx_t *ctx); +int +dht_dir_attr_heal (void *data); +int +dht_dir_attr_heal_done (int ret, call_frame_t *sync_frame, void *data); +int +dht_dir_has_layout (dict_t *xattr, char *name); +gf_boolean_t +dht_is_subvol_in_layout (dht_layout_t *layout, xlator_t *xlator); +xlator_t * +dht_subvol_with_free_space_inodes (xlator_t *this, xlator_t *subvol, + dht_layout_t *layout); +xlator_t * +dht_subvol_maxspace_nonzeroinode (xlator_t *this, xlator_t *subvol, + dht_layout_t *layout); +int +dht_linkfile_attr_heal (call_frame_t *frame, xlator_t *this); + +void +dht_layout_dump (dht_layout_t *layout, const char *prefix); +int32_t +dht_priv_dump (xlator_t *this); +int32_t +dht_inodectx_dump (xlator_t *this, inode_t *inode); + +int +dht_inode_ctx_get1 (xlator_t *this, inode_t *inode, xlator_t **subvol); -#endif /* _DHT_H */ +#endif/* _DHT_H */ diff --git a/xlators/cluster/dht/src/dht-diskusage.c b/xlators/cluster/dht/src/dht-diskusage.c index 830cf2d0e..fe3955ecb 100644 --- a/xlators/cluster/dht/src/dht-diskusage.c +++ b/xlators/cluster/dht/src/dht-diskusage.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ @@ -33,40 +24,70 @@ #include <sys/time.h> -int +int dht_du_info_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, struct statvfs *statvfs) + int op_ret, int op_errno, struct statvfs *statvfs, + dict_t *xdata) { dht_conf_t *conf = NULL; - dht_local_t *local = NULL; - call_frame_t *prev = NULL; + call_frame_t *prev = NULL; int this_call_cnt = 0; - int i = 0; - double percent = 0; + int i = 0; + double percent = 0; + double percent_inodes = 0; + uint64_t bytes = 0; - local = frame->local; - conf = this->private; - prev = cookie; - - if (op_ret == -1) - goto out; - - percent = (statvfs->f_bfree * 100) / statvfs->f_blocks; - - LOCK (&conf->subvolume_lock); - { - for (i = 0; i < conf->subvolume_cnt; i++) - if (prev->this == conf->subvolumes[i]) - conf->du_stats[i].avail_percent = percent; - } - UNLOCK (&conf->subvolume_lock); - - out: + conf = this->private; + prev = cookie; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "failed to get disk info from %s", prev->this->name); + goto out; + } + + if (statvfs && statvfs->f_blocks) { + percent = (statvfs->f_bavail * 100) / statvfs->f_blocks; + bytes = (statvfs->f_bavail * statvfs->f_frsize); + } + + if (statvfs && statvfs->f_files) { + percent_inodes = (statvfs->f_ffree * 100) / statvfs->f_files; + } else { + /* set percent inodes to 100 for dynamically allocated inode filesystems + this logic holds good so that, distribute has nothing to worry about + total inodes rather let the 'create()' to be scheduled on the hashed + subvol regardless of the total inodes. since we have no awareness on + loosing inodes this logic fits well + */ + percent_inodes = 100; + } + + LOCK (&conf->subvolume_lock); + { + for (i = 0; i < conf->subvolume_cnt; i++) + if (prev->this == conf->subvolumes[i]) { + conf->du_stats[i].avail_percent = percent; + conf->du_stats[i].avail_space = bytes; + conf->du_stats[i].avail_inodes = percent_inodes; + gf_log (this->name, GF_LOG_DEBUG, + "on subvolume '%s': avail_percent is: " + "%.2f and avail_space is: %"PRIu64" " + "and avail_inodes is: %.2f", + prev->this->name, + conf->du_stats[i].avail_percent, + conf->du_stats[i].avail_space, + conf->du_stats[i].avail_inodes); + } + } + UNLOCK (&conf->subvolume_lock); + +out: this_call_cnt = dht_frame_return (frame); if (is_last_call (this_call_cnt)) DHT_STACK_DESTROY (frame); - return 0; + return 0; } int @@ -75,161 +96,319 @@ dht_get_du_info_for_subvol (xlator_t *this, int subvol_idx) dht_conf_t *conf = NULL; call_frame_t *statfs_frame = NULL; dht_local_t *statfs_local = NULL; - call_pool_t *pool = NULL; + call_pool_t *pool = NULL; + loc_t tmp_loc = {0,}; conf = this->private; - pool = this->ctx->pool; - - statfs_frame = create_frame (this, pool); - if (!statfs_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - statfs_local = dht_local_init (statfs_frame); - if (!statfs_local) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - loc_t tmp_loc = { .inode = NULL, - .path = "/", - }; - - statfs_local->call_cnt = 1; - STACK_WIND (statfs_frame, dht_du_info_cbk, - conf->subvolumes[subvol_idx], - conf->subvolumes[subvol_idx]->fops->statfs, - &tmp_loc); - - return 0; - err: + pool = this->ctx->pool; + + statfs_frame = create_frame (this, pool); + if (!statfs_frame) { + goto err; + } + + /* local->fop value is not used in this case */ + statfs_local = dht_local_init (statfs_frame, NULL, NULL, + GF_FOP_MAXVALUE); + if (!statfs_local) { + goto err; + } + + /* make it root gfid, should be enough to get the proper info back */ + tmp_loc.gfid[15] = 1; + + statfs_local->call_cnt = 1; + STACK_WIND (statfs_frame, dht_du_info_cbk, + conf->subvolumes[subvol_idx], + conf->subvolumes[subvol_idx]->fops->statfs, + &tmp_loc, NULL); + + return 0; +err: if (statfs_frame) DHT_STACK_DESTROY (statfs_frame); - - return -1; + + return -1; } int dht_get_du_info (call_frame_t *frame, xlator_t *this, loc_t *loc) { - int i = 0; + int i = 0; dht_conf_t *conf = NULL; call_frame_t *statfs_frame = NULL; dht_local_t *statfs_local = NULL; - struct timeval tv = {0,}; + struct timeval tv = {0,}; + loc_t tmp_loc = {0,}; conf = this->private; gettimeofday (&tv, NULL); - if (tv.tv_sec > (conf->refresh_interval - + conf->last_stat_fetch.tv_sec)) { - - statfs_frame = copy_frame (frame); - if (!statfs_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - statfs_local = dht_local_init (statfs_frame); - if (!statfs_local) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + /* make it root gfid, should be enough to get the proper + info back */ + tmp_loc.gfid[15] = 1; - loc_copy (&statfs_local->loc, loc); - loc_t tmp_loc = { .inode = NULL, - .path = "/", - }; - - statfs_local->call_cnt = conf->subvolume_cnt; - for (i = 0; i < conf->subvolume_cnt; i++) { - STACK_WIND (statfs_frame, dht_du_info_cbk, - conf->subvolumes[i], - conf->subvolumes[i]->fops->statfs, - &tmp_loc); - } + if (tv.tv_sec > (conf->refresh_interval + + conf->last_stat_fetch.tv_sec)) { - conf->last_stat_fetch.tv_sec = tv.tv_sec; - } - return 0; + statfs_frame = copy_frame (frame); + if (!statfs_frame) { + goto err; + } + + /* In this case, 'local->fop' is not used */ + statfs_local = dht_local_init (statfs_frame, loc, NULL, + GF_FOP_MAXVALUE); + if (!statfs_local) { + goto err; + } + + statfs_local->call_cnt = conf->subvolume_cnt; + for (i = 0; i < conf->subvolume_cnt; i++) { + STACK_WIND (statfs_frame, dht_du_info_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->statfs, + &tmp_loc, NULL); + } + + conf->last_stat_fetch.tv_sec = tv.tv_sec; + } + return 0; err: if (statfs_frame) DHT_STACK_DESTROY (statfs_frame); - return -1; + return -1; } -int +gf_boolean_t dht_is_subvol_filled (xlator_t *this, xlator_t *subvol) { - int i = 0; - int subvol_filled = 0; + int i = 0; dht_conf_t *conf = NULL; + gf_boolean_t subvol_filled_inodes = _gf_false; + gf_boolean_t subvol_filled_space = _gf_false; + gf_boolean_t is_subvol_filled = _gf_false; - conf = this->private; + conf = this->private; + + /* Check for values above specified percent or free disk */ + LOCK (&conf->subvolume_lock); + { + for (i = 0; i < conf->subvolume_cnt; i++) { + if (subvol == conf->subvolumes[i]) { + if (conf->disk_unit == 'p') { + if (conf->du_stats[i].avail_percent < + conf->min_free_disk) { + subvol_filled_space = _gf_true; + break; + } + + } else { + if (conf->du_stats[i].avail_space < + conf->min_free_disk) { + subvol_filled_space = _gf_true; + break; + } + } + if (conf->du_stats[i].avail_inodes < + conf->min_free_inodes) { + subvol_filled_inodes = _gf_true; + break; + } + } + } + } + UNLOCK (&conf->subvolume_lock); + + if (subvol_filled_space && conf->subvolume_status[i]) { + if (!(conf->du_stats[i].log++ % (GF_UNIVERSAL_ANSWER * 10))) { + gf_log (this->name, GF_LOG_WARNING, + "disk space on subvolume '%s' is getting " + "full (%.2f %%), consider adding more nodes", + subvol->name, + (100 - conf->du_stats[i].avail_percent)); + } + } + + if (subvol_filled_inodes && conf->subvolume_status[i]) { + if (!(conf->du_stats[i].log++ % (GF_UNIVERSAL_ANSWER * 10))) { + gf_log (this->name, GF_LOG_CRITICAL, + "inodes on subvolume '%s' are at " + "(%.2f %%), consider adding more nodes", + subvol->name, + (100 - conf->du_stats[i].avail_inodes)); + } + } + + is_subvol_filled = (subvol_filled_space || subvol_filled_inodes); + + return is_subvol_filled; +} + + +/*Get the best subvolume to create the file in*/ +xlator_t * +dht_free_disk_available_subvol (xlator_t *this, xlator_t *subvol, + dht_local_t *local) +{ + xlator_t *avail_subvol = NULL; + dht_conf_t *conf = NULL; + dht_layout_t *layout = NULL; + loc_t *loc = NULL; + + conf = this->private; + if (!local) + goto out; + loc = &local->loc; + if (!local->layout) { + layout = dht_layout_get (this, loc->parent); + + if (!layout) { + gf_log (this->name, GF_LOG_DEBUG, + "layout missing path=%s parent=%s", + loc->path, uuid_utoa (loc->parent->gfid)); + goto out; + } + } else { + layout = dht_layout_ref (this, local->layout); + } - /* Check for values above 90% free disk */ LOCK (&conf->subvolume_lock); - { - for (i = 0; i < conf->subvolume_cnt; i++) { - if ((subvol == conf->subvolumes[i]) && - (conf->du_stats[i].avail_percent < - conf->min_free_disk)) { - subvol_filled = 1; - break; - } + { + avail_subvol = dht_subvol_with_free_space_inodes(this, subvol, + layout); + if(!avail_subvol) + { + avail_subvol = dht_subvol_maxspace_nonzeroinode(this, + subvol, + layout); + } + + } + UNLOCK (&conf->subvolume_lock); +out: + if (!avail_subvol) { + gf_log (this->name, + GF_LOG_DEBUG, + "no subvolume has enough free space and/or inodes\ + to create"); + avail_subvol = subvol; + } + + if (layout) + dht_layout_unref (this, layout); + return avail_subvol; +} + +static inline +int32_t dht_subvol_has_err (xlator_t *this, dht_layout_t *layout) +{ + int ret = -1; + int i = 0; + + if (!this || !layout) + goto out; + + /* check if subvol has layout errors, before selecting it */ + for (i = 0; i < layout->cnt; i++) { + if (!strcmp (layout->list[i].xlator->name, this->name) && + (layout->list[i].err != 0)) { + ret = -1; + goto out; } } - UNLOCK (&conf->subvolume_lock); - - if (subvol_filled) { - if (!(conf->du_stats[i].log++ % GF_UNIVERSAL_ANSWER)) { - gf_log (this->name, GF_LOG_CRITICAL, - "disk space on subvolume '%s' is getting " - "full (%.2f %%), consider adding more nodes", - subvol->name, - (100 - conf->du_stats[i].avail_percent)); + ret = 0; +out: + return ret; +} + +/*Get subvolume which has both space and inodes more than the min criteria*/ +xlator_t * +dht_subvol_with_free_space_inodes(xlator_t *this, xlator_t *subvol, + dht_layout_t *layout) +{ + int i = 0; + double max = 0; + double max_inodes = 0; + int ignore_subvol = 0; + + xlator_t *avail_subvol = NULL; + dht_conf_t *conf = NULL; + + conf = this->private; + + for(i=0; i < conf->subvolume_cnt; i++) { + /* check if subvol has layout errors, before selecting it */ + ignore_subvol = dht_subvol_has_err (conf->subvolumes[i], + layout); + if (ignore_subvol) + continue; + + if ((conf->disk_unit == 'p') && + (conf->du_stats[i].avail_percent > conf->min_free_disk) && + (conf->du_stats[i].avail_inodes > conf->min_free_inodes)) { + if ((conf->du_stats[i].avail_inodes > max_inodes) || + (conf->du_stats[i].avail_percent > max)) { + max = conf->du_stats[i].avail_percent; + max_inodes = conf->du_stats[i].avail_inodes; + avail_subvol = conf->subvolumes[i]; + } + } + + if ((conf->disk_unit != 'p') && + (conf->du_stats[i].avail_space > conf->min_free_disk) && + (conf->du_stats[i].avail_inodes > conf->min_free_inodes)) { + if ((conf->du_stats[i].avail_inodes > max_inodes) || + (conf->du_stats[i].avail_space > max)) { + max = conf->du_stats[i].avail_space; + max_inodes = conf->du_stats[i].avail_inodes; + avail_subvol = conf->subvolumes[i]; + } } } - return subvol_filled; + return avail_subvol; } + +/* Get subvol which has atleast one inode and maximum space */ xlator_t * -dht_free_disk_available_subvol (xlator_t *this, xlator_t *subvol) +dht_subvol_maxspace_nonzeroinode (xlator_t *this, xlator_t *subvol, + dht_layout_t *layout) { int i = 0; - double max_avail = 0; + double max = 0; + int ignore_subvol = 0; + xlator_t *avail_subvol = NULL; - dht_conf_t *conf = NULL; + dht_conf_t *conf = NULL; conf = this->private; - avail_subvol = subvol; - LOCK (&conf->subvolume_lock); - { - for (i = 0; i < conf->subvolume_cnt; i++) { - if (conf->du_stats[i].avail_percent > max_avail) { - max_avail = conf->du_stats[i].avail_percent; + for (i = 0; i < conf->subvolume_cnt; i++) { + /* check if subvol has layout errors, before selecting it */ + ignore_subvol = dht_subvol_has_err (conf->subvolumes[i], + layout); + if (ignore_subvol) + continue; + + if (conf->disk_unit == 'p') { + if ((conf->du_stats[i].avail_percent > max) + && (conf->du_stats[i].avail_inodes > 0 )) { + max = conf->du_stats[i].avail_percent; avail_subvol = conf->subvolumes[i]; } - } + } else { + if ((conf->du_stats[i].avail_space > max) + && (conf->du_stats[i].avail_inodes > 0)) { + max = conf->du_stats[i].avail_space; + avail_subvol = conf->subvolumes[i]; + } + } } - UNLOCK (&conf->subvolume_lock); - - if (max_avail < conf->min_free_disk) - avail_subvol = subvol; - if (avail_subvol == subvol) { - gf_log (this->name, GF_LOG_WARNING, - "No subvolume has enough free space to create"); - } - return avail_subvol; } diff --git a/xlators/cluster/dht/src/dht-hashfn.c b/xlators/cluster/dht/src/dht-hashfn.c index 31cb828a4..656cf23a0 100644 --- a/xlators/cluster/dht/src/dht-hashfn.c +++ b/xlators/cluster/dht/src/dht-hashfn.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef _CONFIG_H @@ -29,58 +20,92 @@ #include "hashfn.h" -typedef enum { - DHT_HASH_TYPE_DM, -} dht_hashfn_type_t; - - int dht_hash_compute_internal (int type, const char *name, uint32_t *hash_p) { - int ret = 0; - uint32_t hash = 0; - - switch (type) { - case DHT_HASH_TYPE_DM: - hash = gf_dm_hashfn (name, strlen (name)); - break; - default: - ret = -1; - break; - } - - if (ret == 0) { - *hash_p = hash; - } - - return ret; + int ret = 0; + uint32_t hash = 0; + + switch (type) { + case DHT_HASH_TYPE_DM: + case DHT_HASH_TYPE_DM_USER: + hash = gf_dm_hashfn (name, strlen (name)); + break; + default: + ret = -1; + break; + } + + if (ret == 0) { + *hash_p = hash; + } + + return ret; } -#define MAKE_RSYNC_FRIENDLY_NAME(rsync_frndly_name, name) do { \ - rsync_frndly_name = (char *) name; \ - if (name[0] == '.') { \ - char *dot = 0; \ - int namelen = 0; \ - \ - dot = strrchr (name, '.'); \ - if (dot && dot > (name + 1) && *(dot + 1)) { \ - namelen = (dot - name); \ - rsync_frndly_name = alloca (namelen); \ - strncpy (rsync_frndly_name, name + 1, \ - namelen); \ - rsync_frndly_name[namelen - 1] = 0; \ - } \ - } \ - } while (0); - +static inline +gf_boolean_t +dht_munge_name (const char *original, char *modified, size_t len, regex_t *re) +{ + regmatch_t matches[2]; + size_t new_len; + + if (regexec(re,original,2,matches,0) != REG_NOMATCH) { + if (matches[1].rm_so != -1) { + new_len = matches[1].rm_eo - matches[1].rm_so; + /* Equal would fail due to the NUL at the end. */ + if (new_len < len) { + memcpy (modified,original+matches[1].rm_so, + new_len); + modified[new_len] = '\0'; + return _gf_true; + } + } + } + + /* This is guaranteed safe because of how the dest was allocated. */ + strcpy(modified,original); + return _gf_false; +} int -dht_hash_compute (int type, const char *name, uint32_t *hash_p) +dht_hash_compute (xlator_t *this, int type, const char *name, uint32_t *hash_p) { - char *rsync_friendly_name = NULL; - - MAKE_RSYNC_FRIENDLY_NAME (rsync_friendly_name, name); - - return dht_hash_compute_internal (type, rsync_friendly_name, hash_p); + char *rsync_friendly_name = NULL; + dht_conf_t *priv = this->private; + size_t len = 0; + gf_boolean_t munged = _gf_false; + + /* + * It wouldn't be safe to use alloca in an inline function that doesn't + * actually get inlined, and it wouldn't be efficient to do a real + * allocation, so we use alloca here (if needed) and pass that to the + * inline. + */ + + if (priv->extra_regex_valid) { + len = strlen(name) + 1; + rsync_friendly_name = alloca(len); + munged = dht_munge_name (name, rsync_friendly_name, len, + &priv->extra_regex); + } + + if (!munged && priv->rsync_regex_valid) { + len = strlen(name) + 1; + rsync_friendly_name = alloca(len); + gf_log (this->name, GF_LOG_TRACE, "trying regex for %s", name); + munged = dht_munge_name (name, rsync_friendly_name, len, + &priv->rsync_regex); + if (munged) { + gf_log (this->name, GF_LOG_DEBUG, + "munged down to %s", rsync_friendly_name); + } + } + + if (!munged) { + rsync_friendly_name = (char *)name; + } + + return dht_hash_compute_internal (type, rsync_friendly_name, hash_p); } diff --git a/xlators/cluster/dht/src/dht-helper.c b/xlators/cluster/dht/src/dht-helper.c index 136dbe9b8..311a48112 100644 --- a/xlators/cluster/dht/src/dht-helper.c +++ b/xlators/cluster/dht/src/dht-helper.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef _CONFIG_H @@ -27,177 +18,406 @@ #include "xlator.h" #include "dht-common.h" +static inline int +dht_inode_ctx_set1 (xlator_t *this, inode_t *inode, xlator_t *subvol) +{ + uint64_t tmp_subvol = 0; + + tmp_subvol = (long)subvol; + return inode_ctx_set1 (inode, this, &tmp_subvol); +} + +int +dht_inode_ctx_get1 (xlator_t *this, inode_t *inode, xlator_t **subvol) +{ + int ret = -1; + uint64_t tmp_subvol = 0; + + ret = inode_ctx_get1 (inode, this, &tmp_subvol); + if (tmp_subvol && subvol) + *subvol = (xlator_t *)tmp_subvol; + + return ret; +} + int dht_frame_return (call_frame_t *frame) { - dht_local_t *local = NULL; - int this_call_cnt = -1; + dht_local_t *local = NULL; + int this_call_cnt = -1; + + if (!frame) + return -1; + + local = frame->local; - if (!frame) - return -1; + LOCK (&frame->lock); + { + this_call_cnt = --local->call_cnt; + } + UNLOCK (&frame->lock); + + return this_call_cnt; +} - local = frame->local; - LOCK (&frame->lock); - { - this_call_cnt = --local->call_cnt; +static uint64_t +dht_bits_for (uint64_t num) +{ + uint64_t bits = 0, ctrl = 1; + + while (ctrl < num) { + ctrl *= 2; + bits ++; } - UNLOCK (&frame->lock); - return this_call_cnt; + return bits; } +/* + * A slightly "updated" version of the algorithm described in the commit log + * is used here. + * + * The only enhancement is that: + * + * - The number of bits used by the backend filesystem for HUGE d_off which + * is described as 63, and + * - The number of bits used by the d_off presented by the transformation + * upwards which is described as 64, are both made "configurable." + */ + + +#define BACKEND_D_OFF_BITS 63 +#define PRESENT_D_OFF_BITS 63 + +#define ONE 1ULL +#define MASK (~0ULL) +#define PRESENT_MASK (MASK >> (64 - PRESENT_D_OFF_BITS)) +#define BACKEND_MASK (MASK >> (64 - BACKEND_D_OFF_BITS)) + +#define TOP_BIT (ONE << (PRESENT_D_OFF_BITS - 1)) +#define SHIFT_BITS (max (0, (BACKEND_D_OFF_BITS - PRESENT_D_OFF_BITS + 1))) int dht_itransform (xlator_t *this, xlator_t *subvol, uint64_t x, uint64_t *y_p) { - dht_conf_t *conf = NULL; - int cnt = 0; - int max = 0; - uint64_t y = 0; + dht_conf_t *conf = NULL; + int cnt = 0; + int max = 0; + uint64_t y = 0; + uint64_t hi_mask = 0; + uint64_t off_mask = 0; + int max_bits = 0; + + if (x == ((uint64_t) -1)) { + y = (uint64_t) -1; + goto out; + } + conf = this->private; + if (!conf) + goto out; + + max = conf->subvolume_cnt; + cnt = dht_subvol_cnt (this, subvol); - if (x == ((uint64_t) -1)) { - y = (uint64_t) -1; + if (max == 1) { + y = x; goto out; } - conf = this->private; + max_bits = dht_bits_for (max); - max = conf->subvolume_cnt; - cnt = dht_subvol_cnt (this, subvol); + hi_mask = ~(PRESENT_MASK >> (max_bits + 1)); - y = ((x * max) + cnt); + if (x & hi_mask) { + /* HUGE d_off */ + off_mask = MASK << max_bits; + y = TOP_BIT | ((x >> SHIFT_BITS) & off_mask) | cnt; + } else { + /* small d_off */ + y = ((x * max) + cnt); + } out: - if (y_p) - *y_p = y; + if (y_p) + *y_p = y; - return 0; + return 0; } +int +dht_filter_loc_subvol_key (xlator_t *this, loc_t *loc, loc_t *new_loc, + xlator_t **subvol) +{ + char *new_name = NULL; + char *new_path = NULL; + xlator_list_t *trav = NULL; + char key[1024] = {0,}; + int ret = 0; /* not found */ + + /* Why do other tasks if first required 'char' itself is not there */ + if (!new_loc || !loc || !loc->name || !strchr (loc->name, '@')) + goto out; + + trav = this->children; + while (trav) { + snprintf (key, 1024, "*@%s:%s", this->name, trav->xlator->name); + if (fnmatch (key, loc->name, FNM_NOESCAPE) == 0) { + new_name = GF_CALLOC(strlen (loc->name), + sizeof (char), + gf_common_mt_char); + if (!new_name) + goto out; + if (fnmatch (key, loc->path, FNM_NOESCAPE) == 0) { + new_path = GF_CALLOC(strlen (loc->path), + sizeof (char), + gf_common_mt_char); + if (!new_path) + goto out; + strncpy (new_path, loc->path, (strlen (loc->path) - + strlen (key) + 1)); + } + strncpy (new_name, loc->name, (strlen (loc->name) - + strlen (key) + 1)); + + if (new_loc) { + new_loc->path = ((new_path) ? new_path: + gf_strdup (loc->path)); + new_loc->name = new_name; + new_loc->inode = inode_ref (loc->inode); + new_loc->parent = inode_ref (loc->parent); + } + *subvol = trav->xlator; + ret = 1; /* success */ + goto out; + } + trav = trav->next; + } +out: + if (!ret) { + /* !success */ + GF_FREE (new_path); + GF_FREE (new_name); + } + return ret; +} int dht_deitransform (xlator_t *this, uint64_t y, xlator_t **subvol_p, - uint64_t *x_p) + uint64_t *x_p) { - dht_conf_t *conf = NULL; - int cnt = 0; - int max = 0; - uint64_t x = 0; - xlator_t *subvol = 0; + dht_conf_t *conf = NULL; + int cnt = 0; + int max = 0; + uint64_t x = 0; + xlator_t *subvol = 0; + int max_bits = 0; + uint64_t off_mask = 0; + uint64_t host_mask = 0; + + if (!this->private) + return -1; + + conf = this->private; + max = conf->subvolume_cnt; + + if (max == 1) { + x = y; + cnt = 0; + goto out; + } + if (y & TOP_BIT) { + /* HUGE d_off */ + max_bits = dht_bits_for (max); + off_mask = (MASK << max_bits); + host_mask = ~(off_mask); - conf = this->private; - max = conf->subvolume_cnt; + x = ((y & ~TOP_BIT) & off_mask) << SHIFT_BITS; - cnt = y % max; - x = y / max; + cnt = y & host_mask; + } else { + /* small d_off */ + cnt = y % max; + x = y / max; + } - subvol = conf->subvolumes[cnt]; +out: + subvol = conf->subvolumes[cnt]; - if (subvol_p) - *subvol_p = subvol; + if (subvol_p) + *subvol_p = subvol; - if (x_p) - *x_p = x; + if (x_p) + *x_p = x; - return 0; + return 0; } void -dht_local_wipe (dht_local_t *local) +dht_local_wipe (xlator_t *this, dht_local_t *local) { - if (!local) - return; + if (!local) + return; - loc_wipe (&local->loc); - loc_wipe (&local->loc2); + loc_wipe (&local->loc); + loc_wipe (&local->loc2); - if (local->xattr) - dict_unref (local->xattr); + if (local->xattr) + dict_unref (local->xattr); - if (local->inode) - inode_unref (local->inode); + if (local->inode) + inode_unref (local->inode); - if (local->layout) - FREE (local->layout); + if (local->layout) { + dht_layout_unref (this, local->layout); + local->layout = NULL; + } - loc_wipe (&local->linkfile.loc); + loc_wipe (&local->linkfile.loc); - if (local->linkfile.xattr) - dict_unref (local->linkfile.xattr); + if (local->linkfile.xattr) + dict_unref (local->linkfile.xattr); - if (local->linkfile.inode) - inode_unref (local->linkfile.inode); + if (local->linkfile.inode) + inode_unref (local->linkfile.inode); - if (local->fd) { - fd_unref (local->fd); - local->fd = NULL; - } - - if (local->xattr_req) - dict_unref (local->xattr_req); + if (local->fd) { + fd_unref (local->fd); + local->fd = NULL; + } + + if (local->params) { + dict_unref (local->params); + local->params = NULL; + } + + if (local->xattr_req) + dict_unref (local->xattr_req); + + if (local->selfheal.layout) { + dht_layout_unref (this, local->selfheal.layout); + local->selfheal.layout = NULL; + } + + GF_FREE (local->newpath); + + GF_FREE (local->key); - FREE (local); + GF_FREE (local->rebalance.vector); + + if (local->rebalance.iobref) + iobref_unref (local->rebalance.iobref); + + mem_put (local); } dht_local_t * -dht_local_init (call_frame_t *frame) +dht_local_init (call_frame_t *frame, loc_t *loc, fd_t *fd, glusterfs_fop_t fop) { - dht_local_t *local = NULL; + dht_local_t *local = NULL; + inode_t *inode = NULL; + int ret = 0; + + local = mem_get0 (THIS->local_pool); + if (!local) + goto out; - /* TODO: use mem-pool */ - local = CALLOC (1, sizeof (*local)); + if (loc) { + ret = loc_copy (&local->loc, loc); + if (ret) + goto out; - if (!local) - return NULL; + inode = loc->inode; + } - local->op_ret = -1; - local->op_errno = EUCLEAN; + if (fd) { + local->fd = fd_ref (fd); + if (!inode) + inode = fd->inode; + } - frame->local = local; + local->op_ret = -1; + local->op_errno = EUCLEAN; + local->fop = fop; - return local; -} + if (inode) { + local->layout = dht_layout_get (frame->this, inode); + local->cached_subvol = dht_subvol_get_cached (frame->this, + inode); + } + frame->local = local; -char * -basestr (const char *str) +out: + if (ret) { + if (local) + mem_put (local); + local = NULL; + } + return local; +} + +xlator_t * +dht_first_up_subvol (xlator_t *this) { - char *basestr = NULL; + dht_conf_t *conf = NULL; + xlator_t *child = NULL; + int i = 0; + time_t time = 0; + + conf = this->private; + if (!conf) + goto out; - basestr = strrchr (str, '/'); - if (basestr) - basestr ++; + LOCK (&conf->subvolume_lock); + { + for (i = 0; i < conf->subvolume_cnt; i++) { + if (conf->subvol_up_time[i]) { + if (!time) { + time = conf->subvol_up_time[i]; + child = conf->subvolumes[i]; + } else if (time > conf->subvol_up_time[i]) { + time = conf->subvol_up_time[i]; + child = conf->subvolumes[i]; + } + } + } + } + UNLOCK (&conf->subvolume_lock); - return basestr; +out: + return child; } xlator_t * -dht_first_up_child (xlator_t *this) +dht_last_up_subvol (xlator_t *this) { - dht_conf_t *conf = NULL; - xlator_t *child = NULL; - int i = 0; - - conf = this->private; - - LOCK (&conf->subvolume_lock); - { - for (i = 0; i < conf->subvolume_cnt; i++) { - if (conf->subvolume_status[i]) { - child = conf->subvolumes[i]; - break; - } - } - } - UNLOCK (&conf->subvolume_lock); - - return child; + dht_conf_t *conf = NULL; + xlator_t *child = NULL; + int i = 0; + + conf = this->private; + if (!conf) + goto out; + + LOCK (&conf->subvolume_lock); + { + for (i = conf->subvolume_cnt-1; i >= 0; i--) { + if (conf->subvolume_status[i]) { + child = conf->subvolumes[i]; + break; + } + } + } + UNLOCK (&conf->subvolume_lock); + +out: + return child; } xlator_t * @@ -206,17 +426,23 @@ dht_subvol_get_hashed (xlator_t *this, loc_t *loc) dht_layout_t *layout = NULL; xlator_t *subvol = NULL; - if (is_fs_root (loc)) { - subvol = dht_first_up_child (this); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO (this->name, loc, out); + + if (__is_root_gfid (loc->gfid)) { + subvol = dht_first_up_subvol (this); goto out; } + GF_VALIDATE_OR_GOTO (this->name, loc->parent, out); + GF_VALIDATE_OR_GOTO (this->name, loc->name, out); + layout = dht_layout_get (this, loc->parent); if (!layout) { gf_log (this->name, GF_LOG_DEBUG, - "layout missing path=%s parent=%"PRId64, - loc->path, loc->parent->ino); + "layout missing path=%s parent=%s", + loc->path, uuid_utoa (loc->parent->gfid)); goto out; } @@ -230,6 +456,10 @@ dht_subvol_get_hashed (xlator_t *this, loc_t *loc) } out: + if (layout) { + dht_layout_unref (this, layout); + } + return subvol; } @@ -240,6 +470,8 @@ dht_subvol_get_cached (xlator_t *this, inode_t *inode) dht_layout_t *layout = NULL; xlator_t *subvol = NULL; + GF_VALIDATE_OR_GOTO (this->name, this, out); + GF_VALIDATE_OR_GOTO (this->name, inode, out); layout = dht_layout_get (this, inode); @@ -247,9 +479,13 @@ dht_subvol_get_cached (xlator_t *this, inode_t *inode) goto out; } - subvol = layout->list[0].xlator; + subvol = layout->list[0].xlator; out: + if (layout) { + dht_layout_unref (this, layout); + } + return subvol; } @@ -257,70 +493,655 @@ out: xlator_t * dht_subvol_next (xlator_t *this, xlator_t *prev) { - dht_conf_t *conf = NULL; - int i = 0; - xlator_t *next = NULL; - - conf = this->private; - - for (i = 0; i < conf->subvolume_cnt; i++) { - if (conf->subvolumes[i] == prev) { - if ((i + 1) < conf->subvolume_cnt) - next = conf->subvolumes[i + 1]; - break; - } - } + dht_conf_t *conf = NULL; + int i = 0; + xlator_t *next = NULL; + + conf = this->private; + if (!conf) + goto out; - return next; + for (i = 0; i < conf->subvolume_cnt; i++) { + if (conf->subvolumes[i] == prev) { + if ((i + 1) < conf->subvolume_cnt) + next = conf->subvolumes[i + 1]; + break; + } + } + +out: + return next; } +/* This func wraps around, if prev is actually the last subvol. + */ +xlator_t * +dht_subvol_next_available (xlator_t *this, xlator_t *prev) +{ + dht_conf_t *conf = NULL; + int i = 0; + xlator_t *next = NULL; + + conf = this->private; + if (!conf) + goto out; + + for (i = 0; i < conf->subvolume_cnt; i++) { + if (conf->subvolumes[i] == prev) { + /* if prev is last in conf->subvolumes, then wrap + * around. + */ + if ((i + 1) < conf->subvolume_cnt) { + next = conf->subvolumes[i + 1]; + } else { + next = conf->subvolumes[0]; + } + break; + } + } +out: + return next; +} int dht_subvol_cnt (xlator_t *this, xlator_t *subvol) { - int i = 0; - int ret = -1; - dht_conf_t *conf = NULL; + int i = 0; + int ret = -1; + dht_conf_t *conf = NULL; + conf = this->private; + if (!conf) + goto out; - conf = this->private; + for (i = 0; i < conf->subvolume_cnt; i++) { + if (subvol == conf->subvolumes[i]) { + ret = i; + break; + } + } - for (i = 0; i < conf->subvolume_cnt; i++) { - if (subvol == conf->subvolumes[i]) { - ret = i; - break; - } - } +out: + return ret; +} + + +#define set_if_greater(a, b) do { \ + if ((a) < (b)) \ + (a) = (b); \ + } while (0) + + +#define set_if_greater_time(a, an, b, bn) do { \ + if (((a) < (b)) || (((a) == (b)) && ((an) < (bn)))){ \ + (a) = (b); \ + (an) = (bn); \ + } \ + } while (0) \ + + +int +dht_iatt_merge (xlator_t *this, struct iatt *to, + struct iatt *from, xlator_t *subvol) +{ + if (!from || !to) + return 0; + + to->ia_dev = from->ia_dev; + + uuid_copy (to->ia_gfid, from->ia_gfid); + + to->ia_ino = from->ia_ino; + to->ia_prot = from->ia_prot; + to->ia_type = from->ia_type; + to->ia_nlink = from->ia_nlink; + to->ia_rdev = from->ia_rdev; + to->ia_size += from->ia_size; + to->ia_blksize = from->ia_blksize; + to->ia_blocks += from->ia_blocks; + + set_if_greater (to->ia_uid, from->ia_uid); + set_if_greater (to->ia_gid, from->ia_gid); + + set_if_greater_time(to->ia_atime, to->ia_atime_nsec, + from->ia_atime, from->ia_atime_nsec); + set_if_greater_time (to->ia_mtime, to->ia_mtime_nsec, + from->ia_mtime, from->ia_mtime_nsec); + set_if_greater_time (to->ia_ctime, to->ia_ctime_nsec, + from->ia_ctime, from->ia_ctime_nsec); + + return 0; +} + +int +dht_build_child_loc (xlator_t *this, loc_t *child, loc_t *parent, char *name) +{ + if (!child) { + goto err; + } + + if (strcmp (parent->path, "/") == 0) + gf_asprintf ((char **)&child->path, "/%s", name); + else + gf_asprintf ((char **)&child->path, "%s/%s", parent->path, name); + + if (!child->path) { + goto err; + } + + child->name = strrchr (child->path, '/'); + if (child->name) + child->name++; + + child->parent = inode_ref (parent->inode); + child->inode = inode_new (parent->inode->table); + + if (!child->inode) { + goto err; + } + + return 0; +err: + loc_wipe (child); + return -1; +} + + + +int +dht_init_subvolumes (xlator_t *this, dht_conf_t *conf) +{ + xlator_list_t *subvols = NULL; + int cnt = 0; + + if (!conf) + return -1; + + for (subvols = this->children; subvols; subvols = subvols->next) + cnt++; + + conf->subvolumes = GF_CALLOC (cnt, sizeof (xlator_t *), + gf_dht_mt_xlator_t); + if (!conf->subvolumes) { + return -1; + } + conf->subvolume_cnt = cnt; - return ret; + cnt = 0; + for (subvols = this->children; subvols; subvols = subvols->next) + conf->subvolumes[cnt++] = subvols->xlator; + + conf->subvolume_status = GF_CALLOC (cnt, sizeof (char), + gf_dht_mt_char); + if (!conf->subvolume_status) { + return -1; + } + + conf->last_event = GF_CALLOC (cnt, sizeof (int), + gf_dht_mt_char); + if (!conf->last_event) { + return -1; + } + + conf->subvol_up_time = GF_CALLOC (cnt, sizeof (time_t), + gf_dht_mt_subvol_time); + if (!conf->subvol_up_time) { + return -1; + } + + conf->du_stats = GF_CALLOC (conf->subvolume_cnt, sizeof (dht_du_t), + gf_dht_mt_dht_du_t); + if (!conf->du_stats) { + return -1; + } + + conf->decommissioned_bricks = GF_CALLOC (cnt, sizeof (xlator_t *), + gf_dht_mt_xlator_t); + if (!conf->decommissioned_bricks) { + return -1; + } + + return 0; } -#define set_if_greater(a, b) do { \ - if ((a) < (b)) \ - (a) = (b); \ - } while (0) + + +static int +dht_migration_complete_check_done (int op_ret, call_frame_t *frame, void *data) +{ + dht_local_t *local = NULL; + + local = frame->local; + + local->rebalance.target_op_fn (THIS, frame, op_ret); + + return 0; +} + + +int +dht_migration_complete_check_task (void *data) +{ + int ret = -1; + xlator_t *src_node = NULL; + xlator_t *dst_node = NULL; + dht_local_t *local = NULL; + dict_t *dict = NULL; + dht_layout_t *layout = NULL; + struct iatt stbuf = {0,}; + xlator_t *this = NULL; + call_frame_t *frame = NULL; + loc_t tmp_loc = {0,}; + char *path = NULL; + dht_conf_t *conf = NULL; + inode_t *inode = NULL; + fd_t *iter_fd = NULL; + uint64_t tmp_subvol = 0; + int open_failed = 0; + + this = THIS; + frame = data; + local = frame->local; + conf = this->private; + + src_node = local->cached_subvol; + + if (!local->loc.inode && !local->fd) + goto out; + + inode = (!local->fd) ? local->loc.inode : local->fd->inode; + + /* getxattr on cached_subvol for 'linkto' value. Do path based getxattr + * as root:root. If a fd is already open, access check wont be done*/ + + if (!local->loc.inode) { + ret = syncop_fgetxattr (src_node, local->fd, &dict, + conf->link_xattr_name); + } else { + SYNCTASK_SETID (0, 0); + ret = syncop_getxattr (src_node, &local->loc, &dict, + conf->link_xattr_name); + SYNCTASK_SETID (frame->root->uid, frame->root->gid); + } + + if (!ret) + dst_node = dht_linkfile_subvol (this, NULL, NULL, dict); + + if (ret) { + if ((errno != ENOENT) || (!local->loc.inode)) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to get the 'linkto' xattr %s", + local->loc.path, strerror (errno)); + goto out; + } + /* Need to do lookup on hashed subvol, then get the file */ + ret = syncop_lookup (this, &local->loc, NULL, &stbuf, NULL, + NULL); + if (ret) + goto out; + dst_node = dht_subvol_get_cached (this, local->loc.inode); + } + + if (!dst_node) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to get the destination node", + local->loc.path); + ret = -1; + goto out; + } + + /* lookup on dst */ + if (local->loc.inode) { + ret = syncop_lookup (dst_node, &local->loc, NULL, &stbuf, NULL, NULL); + + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to lookup the file on %s", + local->loc.path, dst_node->name); + goto out; + } + + if (uuid_compare (stbuf.ia_gfid, local->loc.inode->gfid)) { + gf_log (this->name, GF_LOG_ERROR, + "%s: gfid different on the target file on %s", + local->loc.path, dst_node->name); + ret = -1; + goto out; + } + } + + /* update inode ctx (the layout) */ + dht_layout_unref (this, local->layout); + + ret = dht_layout_preset (this, dst_node, inode); + if (ret != 0) { + gf_log (this->name, GF_LOG_DEBUG, + "%s: could not set preset layout for subvol %s", + local->loc.path, dst_node->name); + ret = -1; + goto out; + } + + layout = dht_layout_for_subvol (this, dst_node); + if (!layout) { + gf_log (this->name, GF_LOG_INFO, + "%s: no pre-set layout for subvolume %s", + local->loc.path, dst_node ? dst_node->name : "<nil>"); + ret = -1; + goto out; + } + + ret = dht_layout_set (this, inode, layout); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to set the new layout", + local->loc.path); + goto out; + } + + local->cached_subvol = dst_node; + ret = 0; + + /* once we detect the migration complete, the inode-ctx2 is no more + required.. delete the ctx and also, it means, open() already + done on all the fd of inode */ + ret = inode_ctx_reset1 (inode, this, &tmp_subvol); + if (tmp_subvol) + goto out; + + if (list_empty (&inode->fd_list)) + goto out; + + /* perform open as root:root. There is window between linkfile + * creation(root:root) and setattr with the correct uid/gid + */ + SYNCTASK_SETID(0, 0); + + /* perform 'open()' on all the fd's present on the inode */ + tmp_loc.inode = inode; + inode_path (inode, NULL, &path); + if (path) + tmp_loc.path = path; + list_for_each_entry (iter_fd, &inode->fd_list, inode_list) { + if (fd_is_anonymous (iter_fd)) + continue; + + ret = syncop_open (dst_node, &tmp_loc, + iter_fd->flags, iter_fd); + if (ret == -1) { + gf_log (this->name, GF_LOG_ERROR, "failed to open " + "the fd (%p, flags=0%o) on file %s @ %s", + iter_fd, iter_fd->flags, path, dst_node->name); + open_failed = 1; + } + } + GF_FREE (path); + + SYNCTASK_SETID (frame->root->uid, frame->root->gid); + if (open_failed) { + ret = -1; + goto out; + } + ret = 0; +out: + + return ret; +} int -dht_stat_merge (xlator_t *this, struct stat *to, - struct stat *from, xlator_t *subvol) +dht_rebalance_complete_check (xlator_t *this, call_frame_t *frame) { - to->st_dev = from->st_dev; + int ret = -1; - dht_itransform (this, subvol, from->st_ino, &to->st_ino); + ret = synctask_new (this->ctx->env, dht_migration_complete_check_task, + dht_migration_complete_check_done, + frame, frame); + return ret; +} - to->st_mode = from->st_mode; - to->st_nlink = from->st_nlink; - to->st_uid = from->st_uid; - to->st_gid = from->st_gid; - to->st_rdev = from->st_rdev; - to->st_size += from->st_size; - to->st_blksize = from->st_blksize; - to->st_blocks += from->st_blocks; +/* During 'in-progress' state, both nodes should have the file */ +static int +dht_inprogress_check_done (int op_ret, call_frame_t *sync_frame, void *data) +{ + dht_local_t *local = NULL; - set_if_greater (to->st_atime, from->st_atime); - set_if_greater (to->st_mtime, from->st_mtime); - set_if_greater (to->st_ctime, from->st_ctime); + local = sync_frame->local; - return 0; + local->rebalance.target_op_fn (THIS, sync_frame, op_ret); + + return 0; +} + +static int +dht_rebalance_inprogress_task (void *data) +{ + int ret = -1; + xlator_t *src_node = NULL; + xlator_t *dst_node = NULL; + dht_local_t *local = NULL; + dict_t *dict = NULL; + call_frame_t *frame = NULL; + xlator_t *this = NULL; + char *path = NULL; + struct iatt stbuf = {0,}; + loc_t tmp_loc = {0,}; + dht_conf_t *conf = NULL; + inode_t *inode = NULL; + fd_t *iter_fd = NULL; + int open_failed = 0; + + this = THIS; + frame = data; + local = frame->local; + conf = this->private; + + src_node = local->cached_subvol; + + if (!local->loc.inode && !local->fd) + goto out; + + inode = (!local->fd) ? local->loc.inode : local->fd->inode; + + /* getxattr on cached_subvol for 'linkto' value. Do path based getxattr + * as root:root. If a fd is already open, access check wont be done*/ + if (local->loc.inode) { + SYNCTASK_SETID (0, 0); + ret = syncop_getxattr (src_node, &local->loc, &dict, + conf->link_xattr_name); + SYNCTASK_SETID (frame->root->uid, frame->root->gid); + } else { + ret = syncop_fgetxattr (src_node, local->fd, &dict, + conf->link_xattr_name); + } + + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to get the 'linkto' xattr %s", + local->loc.path, strerror (errno)); + goto out; + } + + dst_node = dht_linkfile_subvol (this, NULL, NULL, dict); + if (!dst_node) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to get the 'linkto' xattr from dict", + local->loc.path); + ret = -1; + goto out; + } + + local->rebalance.target_node = dst_node; + + if (local->loc.inode) { + /* lookup on dst */ + ret = syncop_lookup (dst_node, &local->loc, NULL, + &stbuf, NULL, NULL); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to lookup the file on %s", + local->loc.path, dst_node->name); + goto out; + } + + if (uuid_compare (stbuf.ia_gfid, local->loc.inode->gfid)) { + gf_log (this->name, GF_LOG_ERROR, + "%s: gfid different on the target file on %s", + local->loc.path, dst_node->name); + ret = -1; + goto out; + } + } + + ret = 0; + + if (list_empty (&inode->fd_list)) + goto done; + + /* perform open as root:root. There is window between linkfile + * creation(root:root) and setattr with the correct uid/gid + */ + SYNCTASK_SETID (0, 0); + + tmp_loc.inode = inode; + inode_path (inode, NULL, &path); + if (path) + tmp_loc.path = path; + + list_for_each_entry (iter_fd, &inode->fd_list, inode_list) { + if (fd_is_anonymous (iter_fd)) + continue; + + ret = syncop_open (dst_node, &tmp_loc, + iter_fd->flags, iter_fd); + if (ret == -1) { + gf_log (this->name, GF_LOG_ERROR, "failed to send open " + "the fd (%p, flags=0%o) on file %s @ %s", + iter_fd, iter_fd->flags, path, dst_node->name); + open_failed = 1; + } + } + GF_FREE (path); + + SYNCTASK_SETID (frame->root->uid, frame->root->gid); + + if (open_failed) { + ret = -1; + goto out; + } + +done: + ret = dht_inode_ctx_set1 (this, inode, dst_node); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to set inode-ctx target file at %s", + local->loc.path, dst_node->name); + goto out; + } + + ret = 0; +out: + return ret; +} + +int +dht_rebalance_in_progress_check (xlator_t *this, call_frame_t *frame) +{ + + int ret = -1; + + ret = synctask_new (this->ctx->env, dht_rebalance_inprogress_task, + dht_inprogress_check_done, + frame, frame); + return ret; +} + +int +dht_inode_ctx_layout_set (inode_t *inode, xlator_t *this, + dht_layout_t *layout_int) +{ + dht_inode_ctx_t *ctx = NULL; + int ret = -1; + + ret = dht_inode_ctx_get (inode, this, &ctx); + if (!ret && ctx) { + ctx->layout = layout_int; + } else { + ctx = GF_CALLOC (1, sizeof (*ctx), gf_dht_mt_inode_ctx_t); + if (!ctx) + return ret; + ctx->layout = layout_int; + } + + ret = dht_inode_ctx_set (inode, this, ctx); + + return ret; +} + +int +dht_inode_ctx_time_update (inode_t *inode, xlator_t *this, struct iatt *stat, + int32_t post) +{ + dht_inode_ctx_t *ctx = NULL; + dht_stat_time_t *time = 0; + int ret = -1; + + GF_VALIDATE_OR_GOTO (this->name, stat, out); + GF_VALIDATE_OR_GOTO (this->name, inode, out); + + ret = dht_inode_ctx_get (inode, this, &ctx); + + if (ret) { + ctx = GF_CALLOC (1, sizeof (*ctx), gf_dht_mt_inode_ctx_t); + if (!ctx) + return -1; + } + + time = &ctx->time; + + DHT_UPDATE_TIME(time->mtime, time->mtime_nsec, + stat->ia_mtime, stat->ia_mtime_nsec, inode, post); + DHT_UPDATE_TIME(time->ctime, time->ctime_nsec, + stat->ia_ctime, stat->ia_ctime_nsec, inode, post); + DHT_UPDATE_TIME(time->atime, time->atime_nsec, + stat->ia_atime, stat->ia_atime_nsec, inode, post); + + ret = dht_inode_ctx_set (inode, this, ctx); +out: + return 0; +} + +int +dht_inode_ctx_get (inode_t *inode, xlator_t *this, dht_inode_ctx_t **ctx) +{ + int ret = -1; + uint64_t ctx_int = 0; + + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO (this->name, inode, out); + + ret = inode_ctx_get (inode, this, &ctx_int); + + if (ret) + return ret; + + if (ctx) + *ctx = (dht_inode_ctx_t *) ctx_int; +out: + return ret; +} + +int dht_inode_ctx_set (inode_t *inode, xlator_t *this, dht_inode_ctx_t *ctx) +{ + int ret = -1; + uint64_t ctx_int = 0; + + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO (this->name, inode, out); + GF_VALIDATE_OR_GOTO (this->name, ctx, out); + + ctx_int = (long)ctx; + ret = inode_ctx_set (inode, this, &ctx_int); +out: + return ret; } diff --git a/xlators/cluster/dht/src/dht-inode-read.c b/xlators/cluster/dht/src/dht-inode-read.c new file mode 100644 index 000000000..ece84151a --- /dev/null +++ b/xlators/cluster/dht/src/dht-inode-read.c @@ -0,0 +1,1139 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "dht-common.h" + +int dht_access2 (xlator_t *this, call_frame_t *frame, int ret); +int dht_readv2 (xlator_t *this, call_frame_t *frame, int ret); +int dht_attr2 (xlator_t *this, call_frame_t *frame, int ret); +int dht_open2 (xlator_t *this, call_frame_t *frame, int ret); +int dht_flush2 (xlator_t *this, call_frame_t *frame, int ret); +int dht_lk2 (xlator_t *this, call_frame_t *frame, int ret); +int dht_fsync2 (xlator_t *this, call_frame_t *frame, int ret); + +int +dht_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, fd_t *fd, dict_t *xdata) +{ + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + int ret = 0; + + local = frame->local; + prev = cookie; + + local->op_errno = op_errno; + if ((op_ret == -1) && (op_errno != ENOENT)) { + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + goto out; + } + + if (!op_ret || (local->call_cnt != 1)) + goto out; + + /* rebalance would have happened */ + local->rebalance.target_op_fn = dht_open2; + ret = dht_rebalance_complete_check (this, frame); + if (!ret) + return 0; + +out: + DHT_STACK_UNWIND (open, frame, op_ret, op_errno, local->fd, xdata); + + return 0; +} + +int +dht_open2 (xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + int op_errno = EINVAL; + + local = frame->local; + if (!local) + goto out; + + op_errno = ENOENT; + if (op_ret) + goto out; + + local->call_cnt = 2; + subvol = local->cached_subvol; + + STACK_WIND (frame, dht_open_cbk, subvol, subvol->fops->open, + &local->loc, local->rebalance.flags, local->fd, + NULL); + return 0; + +out: + DHT_STACK_UNWIND (stat, frame, -1, op_errno, NULL, NULL); + return 0; +} + +int +dht_open (call_frame_t *frame, xlator_t *this, + loc_t *loc, int flags, fd_t *fd, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + local = dht_local_init (frame, loc, fd, GF_FOP_OPEN); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + local->rebalance.flags = flags; + local->call_cnt = 1; + + STACK_WIND (frame, dht_open_cbk, subvol, subvol->fops->open, + loc, flags, fd, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (open, frame, -1, op_errno, NULL, NULL); + + return 0; +} + +int +dht_file_attr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *stbuf, dict_t *xdata) +{ + xlator_t *subvol = 0; + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + int ret = -1; + inode_t *inode = NULL; + + GF_VALIDATE_OR_GOTO ("dht", frame, err); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", cookie, out); + + local = frame->local; + prev = cookie; + + if ((op_ret == -1) && (op_errno != ENOENT)) { + local->op_errno = op_errno; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + goto out; + } + + if (local->call_cnt != 1) + goto out; + + local->op_errno = op_errno; + /* Check if the rebalance phase2 is true */ + if ((op_ret == -1) || IS_DHT_MIGRATION_PHASE2 (stbuf)) { + inode = (local->fd) ? local->fd->inode : local->loc.inode; + ret = dht_inode_ctx_get1 (this, inode, &subvol); + if (!subvol) { + /* Phase 2 of migration */ + local->rebalance.target_op_fn = dht_attr2; + ret = dht_rebalance_complete_check (this, frame); + if (!ret) + return 0; + } else { + /* value is already set in fd_ctx, that means no need + to check for whether its complete or not. */ + dht_attr2 (this, frame, 0); + return 0; + } + } + +out: + DHT_STRIP_PHASE1_FLAGS (stbuf); + DHT_STACK_UNWIND (stat, frame, op_ret, op_errno, stbuf, xdata); +err: + return 0; +} + +int +dht_attr2 (xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + int op_errno = EINVAL; + + local = frame->local; + if (!local) + goto out; + + op_errno = local->op_errno; + if (op_ret == -1) + goto out; + + subvol = local->cached_subvol; + local->call_cnt = 2; + + if (local->fop == GF_FOP_FSTAT) { + STACK_WIND (frame, dht_file_attr_cbk, subvol, + subvol->fops->fstat, local->fd, NULL); + } else { + STACK_WIND (frame, dht_file_attr_cbk, subvol, + subvol->fops->stat, &local->loc, NULL); + } + return 0; + +out: + DHT_STACK_UNWIND (stat, frame, -1, op_errno, NULL, NULL); + return 0; +} + +int +dht_attr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *stbuf, dict_t *xdata) +{ + dht_local_t *local = NULL; + int this_call_cnt = 0; + call_frame_t *prev = NULL; + + GF_VALIDATE_OR_GOTO ("dht", frame, err); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", cookie, out); + + local = frame->local; + prev = cookie; + + LOCK (&frame->lock); + { + if (op_ret == -1) { + local->op_errno = op_errno; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + + goto unlock; + } + + dht_iatt_merge (this, &local->stbuf, stbuf, prev->this); + + local->op_ret = 0; + } +unlock: + UNLOCK (&frame->lock); +out: + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + DHT_STACK_UNWIND (stat, frame, local->op_ret, local->op_errno, + &local->stbuf, xdata); + } +err: + return 0; +} + +int +dht_stat (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + dht_layout_t *layout = NULL; + int i = 0; + int call_cnt = 0; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); + VALIDATE_OR_GOTO (loc->path, err); + + + local = dht_local_init (frame, loc, NULL, GF_FOP_STAT); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + layout = local->layout; + if (!layout) { + gf_log (this->name, GF_LOG_DEBUG, + "no layout for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } + + if (IA_ISREG (loc->inode->ia_type)) { + local->call_cnt = 1; + + subvol = local->cached_subvol; + + STACK_WIND (frame, dht_file_attr_cbk, subvol, + subvol->fops->stat, loc, xdata); + + return 0; + } + + local->call_cnt = call_cnt = layout->cnt; + + for (i = 0; i < call_cnt; i++) { + subvol = layout->list[i].xlator; + + STACK_WIND (frame, dht_attr_cbk, + subvol, subvol->fops->stat, + loc, xdata); + } + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (stat, frame, -1, op_errno, NULL, NULL); + + return 0; +} + + +int +dht_fstat (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + dht_layout_t *layout = NULL; + int i = 0; + int call_cnt = 0; + + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + local = dht_local_init (frame, NULL, fd, GF_FOP_FSTAT); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + layout = local->layout; + if (!layout) { + gf_log (this->name, GF_LOG_DEBUG, + "no layout for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + if (IA_ISREG (fd->inode->ia_type)) { + local->call_cnt = 1; + + subvol = local->cached_subvol; + + STACK_WIND (frame, dht_file_attr_cbk, subvol, + subvol->fops->fstat, fd, xdata); + + return 0; + } + + local->call_cnt = call_cnt = layout->cnt; + + for (i = 0; i < call_cnt; i++) { + subvol = layout->list[i].xlator; + STACK_WIND (frame, dht_attr_cbk, + subvol, subvol->fops->fstat, + fd, xdata); + } + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (fstat, frame, -1, op_errno, NULL, NULL); + + return 0; +} + +int +dht_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, + struct iovec *vector, int count, struct iatt *stbuf, + struct iobref *iobref, dict_t *xdata) +{ + dht_local_t *local = NULL; + int ret = 0; + inode_t *inode = NULL; + xlator_t *subvol = 0; + + local = frame->local; + if (!local) { + op_ret = -1; + op_errno = EINVAL; + goto out; + } + + /* This is already second try, no need for re-check */ + if (local->call_cnt != 1) + goto out; + + if ((op_ret == -1) && (op_errno != ENOENT)) + goto out; + + local->op_errno = op_errno; + if ((op_ret == -1) || IS_DHT_MIGRATION_PHASE2 (stbuf)) { + /* File would be migrated to other node */ + ret = dht_inode_ctx_get1 (this, inode, &subvol); + if (!subvol) { + local->rebalance.target_op_fn = dht_readv2; + ret = dht_rebalance_complete_check (this, frame); + if (!ret) + return 0; + } else { + /* value is already set in fd_ctx, that means no need + to check for whether its complete or not. */ + dht_readv2 (this, frame, 0); + return 0; + } + } + +out: + DHT_STRIP_PHASE1_FLAGS (stbuf); + DHT_STACK_UNWIND (readv, frame, op_ret, op_errno, vector, count, stbuf, + iobref, xdata); + + return 0; +} + +int +dht_readv2 (xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + int op_errno = EINVAL; + + local = frame->local; + if (!local) + goto out; + + op_errno = local->op_errno; + if (op_ret == -1) + goto out; + + local->call_cnt = 2; + subvol = local->cached_subvol; + + STACK_WIND (frame, dht_readv_cbk, subvol, subvol->fops->readv, + local->fd, local->rebalance.size, local->rebalance.offset, + local->rebalance.flags, NULL); + + return 0; + +out: + DHT_STACK_UNWIND (readv, frame, -1, op_errno, NULL, 0, NULL, NULL, NULL); + return 0; +} + +int +dht_readv (call_frame_t *frame, xlator_t *this, + fd_t *fd, size_t size, off_t off, uint32_t flags, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + local = dht_local_init (frame, NULL, fd, GF_FOP_READ); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + local->rebalance.offset = off; + local->rebalance.size = size; + local->rebalance.flags = flags; + local->call_cnt = 1; + + STACK_WIND (frame, dht_readv_cbk, + subvol, subvol->fops->readv, + fd, size, off, flags, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (readv, frame, -1, op_errno, NULL, 0, NULL, NULL, NULL); + + return 0; +} + +int +dht_access_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xdata) +{ + int ret = -1; + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + call_frame_t *prev = NULL; + + local = frame->local; + prev = cookie; + + if (!prev || !prev->this) + goto out; + if (local->call_cnt != 1) + goto out; + if ((op_ret == -1) && (op_errno == ENOTCONN) && + IA_ISDIR(local->loc.inode->ia_type)) { + + subvol = dht_subvol_next_available (this, prev->this); + if (!subvol) + goto out; + + /* check if we are done with visiting every node */ + if (subvol == local->cached_subvol) { + goto out; + } + + STACK_WIND (frame, dht_access_cbk, subvol, subvol->fops->access, + &local->loc, local->rebalance.flags, NULL); + return 0; + } + if ((op_ret == -1) && (op_errno == ENOENT)) { + /* File would be migrated to other node */ + local->op_errno = op_errno; + local->rebalance.target_op_fn = dht_access2; + ret = dht_rebalance_complete_check (frame->this, frame); + if (!ret) + return 0; + } + +out: + DHT_STACK_UNWIND (access, frame, op_ret, op_errno, xdata); + return 0; +} + +int +dht_access2 (xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + int op_errno = EINVAL; + + local = frame->local; + if (!local) + goto out; + + op_errno = local->op_errno; + if (op_ret == -1) + goto out; + + local->call_cnt = 2; + subvol = local->cached_subvol; + + STACK_WIND (frame, dht_access_cbk, subvol, subvol->fops->access, + &local->loc, local->rebalance.flags, NULL); + + return 0; + +out: + DHT_STACK_UNWIND (access, frame, -1, op_errno, NULL); + return 0; +} + + +int +dht_access (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t mask, + dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); + VALIDATE_OR_GOTO (loc->path, err); + + local = dht_local_init (frame, loc, NULL, GF_FOP_ACCESS); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + local->rebalance.flags = mask; + local->call_cnt = 1; + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } + + STACK_WIND (frame, dht_access_cbk, subvol, subvol->fops->access, + loc, mask, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (access, frame, -1, op_errno, NULL); + + return 0; +} + + +int +dht_flush_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xdata) +{ + dht_local_t *local = NULL; + inode_t *inode = NULL; + xlator_t *subvol = 0; + + local = frame->local; + + local->op_errno = op_errno; + + if (local->call_cnt != 1) + goto out; + + /* If context is set, then send flush() it to the destination */ + dht_inode_ctx_get1 (this, inode, &subvol); + if (subvol) { + dht_flush2 (this, frame, 0); + return 0; + } + +out: + DHT_STACK_UNWIND (flush, frame, op_ret, op_errno, xdata); + + return 0; +} + +int +dht_flush2 (xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + + local = frame->local; + + dht_inode_ctx_get1 (this, local->fd->inode, &subvol); + + if (!subvol) + subvol = local->cached_subvol; + + local->call_cnt = 2; /* This is the second attempt */ + + STACK_WIND (frame, dht_flush_cbk, + subvol, subvol->fops->flush, local->fd, NULL); + + return 0; +} + + +int +dht_flush (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + local = dht_local_init (frame, NULL, fd, GF_FOP_FLUSH); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + local->call_cnt = 1; + + STACK_WIND (frame, dht_flush_cbk, + subvol, subvol->fops->flush, fd, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (flush, frame, -1, op_errno, NULL); + + return 0; +} + + +int +dht_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, + int op_errno, struct iatt *prebuf, struct iatt *postbuf, + dict_t *xdata) +{ + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + int ret = -1; + inode_t *inode = NULL; + xlator_t *subvol = 0; + + local = frame->local; + prev = cookie; + + local->op_errno = op_errno; + if (op_ret == -1 && (op_errno != ENOENT)) { + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + goto out; + } + + if (local->call_cnt != 1) { + if (local->stbuf.ia_blocks) { + dht_iatt_merge (this, postbuf, &local->stbuf, NULL); + dht_iatt_merge (this, prebuf, &local->prebuf, NULL); + } + goto out; + } + + local->op_errno = op_errno; + dht_inode_ctx_get1 (this, inode, &subvol); + if (!subvol) { + local->rebalance.target_op_fn = dht_fsync2; + + /* Check if the rebalance phase1 is true */ + if (IS_DHT_MIGRATION_PHASE1 (postbuf)) { + dht_iatt_merge (this, &local->stbuf, postbuf, NULL); + dht_iatt_merge (this, &local->prebuf, prebuf, NULL); + + ret = dht_rebalance_in_progress_check (this, frame); + } + + /* Check if the rebalance phase2 is true */ + if (IS_DHT_MIGRATION_PHASE2 (postbuf)) { + ret = dht_rebalance_complete_check (this, frame); + } + if (!ret) + return 0; + } else { + dht_fsync2 (this, frame, 0); + return 0; + } + +out: + DHT_STRIP_PHASE1_FLAGS (postbuf); + DHT_STRIP_PHASE1_FLAGS (prebuf); + DHT_STACK_UNWIND (fsync, frame, op_ret, op_errno, + prebuf, postbuf, xdata); + + return 0; +} + +int +dht_fsync2 (xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + + local = frame->local; + + dht_inode_ctx_get1 (this, local->fd->inode, &subvol); + if (!subvol) + subvol = local->cached_subvol; + + local->call_cnt = 2; /* This is the second attempt */ + + STACK_WIND (frame, dht_fsync_cbk, subvol, subvol->fops->fsync, + local->fd, local->rebalance.flags, NULL); + + return 0; +} + +int +dht_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int datasync, + dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + local = dht_local_init (frame, NULL, fd, GF_FOP_FSYNC); + if (!local) { + op_errno = ENOMEM; + + goto err; + } + + local->call_cnt = 1; + local->rebalance.flags = datasync; + + subvol = local->cached_subvol; + + STACK_WIND (frame, dht_fsync_cbk, subvol, subvol->fops->fsync, + fd, datasync, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (fsync, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; +} + + +/* TODO: for 'lk()' call, we need some other special error, may be ESTALE to + indicate that lock migration happened on the fd, so we can consider it as + phase 2 of migration */ +int +dht_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct gf_flock *flock, dict_t *xdata) +{ + DHT_STACK_UNWIND (lk, frame, op_ret, op_errno, flock, xdata); + + return 0; +} + + +int +dht_lk (call_frame_t *frame, xlator_t *this, + fd_t *fd, int cmd, struct gf_flock *flock, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + subvol = dht_subvol_get_cached (this, fd->inode); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + /* TODO: for rebalance, we need to preserve the fop arguments */ + STACK_WIND (frame, dht_lk_cbk, subvol, subvol->fops->lk, fd, + cmd, flock, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (lk, frame, -1, op_errno, NULL, NULL); + + return 0; +} + +/* Symlinks are currently not migrated, so no need for any check here */ +int +dht_readlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, const char *path, + struct iatt *stbuf, dict_t *xdata) +{ + dht_local_t *local = NULL; + + local = frame->local; + if (op_ret == -1) + goto err; + + if (!local) { + op_ret = -1; + op_errno = EINVAL; + } + +err: + DHT_STRIP_PHASE1_FLAGS (stbuf); + DHT_STACK_UNWIND (readlink, frame, op_ret, op_errno, path, stbuf, xdata); + + return 0; +} + + +int +dht_readlink (call_frame_t *frame, xlator_t *this, loc_t *loc, size_t size, + dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); + VALIDATE_OR_GOTO (loc->path, err); + + local = dht_local_init (frame, loc, NULL, GF_FOP_READLINK); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } + + STACK_WIND (frame, dht_readlink_cbk, + subvol, subvol->fops->readlink, + loc, size, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (readlink, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; +} + +/* Currently no translators on top of 'distribute' will be using + * below fops, hence not implementing 'migration' related checks + */ + +int +dht_xattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *dict, dict_t *xdata) +{ + DHT_STACK_UNWIND (xattrop, frame, op_ret, op_errno, dict, xdata); + return 0; +} + + +int +dht_xattrop (call_frame_t *frame, xlator_t *this, loc_t *loc, + gf_xattrop_flags_t flags, dict_t *dict, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); + VALIDATE_OR_GOTO (loc->path, err); + + local = dht_local_init (frame, loc, NULL, GF_FOP_XATTROP); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } + + local->call_cnt = 1; + + STACK_WIND (frame, + dht_xattrop_cbk, + subvol, subvol->fops->xattrop, + loc, flags, dict, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (xattrop, frame, -1, op_errno, NULL, NULL); + + return 0; +} + + +int +dht_fxattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *dict, dict_t *xdata) +{ + DHT_STACK_UNWIND (fxattrop, frame, op_ret, op_errno, dict, xdata); + return 0; +} + + +int +dht_fxattrop (call_frame_t *frame, xlator_t *this, + fd_t *fd, gf_xattrop_flags_t flags, dict_t *dict, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + subvol = dht_subvol_get_cached (this, fd->inode); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + STACK_WIND (frame, + dht_fxattrop_cbk, + subvol, subvol->fops->fxattrop, + fd, flags, dict, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (fxattrop, frame, -1, op_errno, NULL, NULL); + + return 0; +} + + +int +dht_inodelk_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *xdata) + +{ + DHT_STACK_UNWIND (inodelk, frame, op_ret, op_errno, xdata); + return 0; +} + + +int32_t +dht_inodelk (call_frame_t *frame, xlator_t *this, const char *volume, + loc_t *loc, int32_t cmd, struct gf_flock *lock, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); + VALIDATE_OR_GOTO (loc->path, err); + + local = dht_local_init (frame, loc, NULL, GF_FOP_INODELK); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } + + local->call_cnt = 1; + + STACK_WIND (frame, + dht_inodelk_cbk, + subvol, subvol->fops->inodelk, + volume, loc, cmd, lock, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (inodelk, frame, -1, op_errno, NULL); + + return 0; +} + + +int +dht_finodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) + +{ + DHT_STACK_UNWIND (finodelk, frame, op_ret, op_errno, xdata); + return 0; +} + + +int +dht_finodelk (call_frame_t *frame, xlator_t *this, const char *volume, + fd_t *fd, int32_t cmd, struct gf_flock *lock, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + subvol = dht_subvol_get_cached (this, fd->inode); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + + STACK_WIND (frame, dht_finodelk_cbk, subvol, subvol->fops->finodelk, + volume, fd, cmd, lock, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (finodelk, frame, -1, op_errno, NULL); + + return 0; +} diff --git a/xlators/cluster/dht/src/dht-inode-write.c b/xlators/cluster/dht/src/dht-inode-write.c new file mode 100644 index 000000000..4b3f3a049 --- /dev/null +++ b/xlators/cluster/dht/src/dht-inode-write.c @@ -0,0 +1,1013 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "dht-common.h" + +int dht_writev2 (xlator_t *this, call_frame_t *frame, int ret); +int dht_truncate2 (xlator_t *this, call_frame_t *frame, int ret); +int dht_setattr2 (xlator_t *this, call_frame_t *frame, int ret); +int dht_fallocate2(xlator_t *this, call_frame_t *frame, int op_ret); +int dht_discard2(xlator_t *this, call_frame_t *frame, int op_ret); +int dht_zerofill2(xlator_t *this, call_frame_t *frame, int op_ret); + +int +dht_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + dht_local_t *local = NULL; + int ret = -1; + xlator_t *subvol = NULL; + + if (op_ret == -1 && (op_errno != ENOENT)) { + goto out; + } + + local = frame->local; + if (!local) { + op_ret = -1; + op_errno = EINVAL; + goto out; + } + + if (local->call_cnt != 1) { + /* preserve the modes of source */ + if (local->stbuf.ia_blocks) { + dht_iatt_merge (this, postbuf, &local->stbuf, NULL); + dht_iatt_merge (this, prebuf, &local->prebuf, NULL); + } + goto out; + } + + local->rebalance.target_op_fn = dht_writev2; + + local->op_errno = op_errno; + /* Phase 2 of migration */ + if (IS_DHT_MIGRATION_PHASE2 (postbuf)) { + ret = dht_rebalance_complete_check (this, frame); + if (!ret) + return 0; + } + + /* Check if the rebalance phase1 is true */ + if (IS_DHT_MIGRATION_PHASE1 (postbuf)) { + dht_iatt_merge (this, &local->stbuf, postbuf, NULL); + dht_iatt_merge (this, &local->prebuf, prebuf, NULL); + + ret = dht_inode_ctx_get1 (this, local->fd->inode, &subvol); + if (subvol) { + dht_writev2 (this, frame, 0); + return 0; + } + ret = dht_rebalance_in_progress_check (this, frame); + if (!ret) + return 0; + } + +out: + DHT_STRIP_PHASE1_FLAGS (postbuf); + DHT_STRIP_PHASE1_FLAGS (prebuf); + + DHT_STACK_UNWIND (writev, frame, op_ret, op_errno, prebuf, postbuf, + xdata); + + return 0; +} + +int +dht_writev2 (xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + + local = frame->local; + + dht_inode_ctx_get1 (this, local->fd->inode, &subvol); + + if (!subvol) + subvol = local->cached_subvol; + + local->call_cnt = 2; /* This is the second attempt */ + + STACK_WIND (frame, dht_writev_cbk, + subvol, subvol->fops->writev, + local->fd, local->rebalance.vector, local->rebalance.count, + local->rebalance.offset, local->rebalance.flags, + local->rebalance.iobref, NULL); + + return 0; +} + +int +dht_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, + struct iovec *vector, int count, off_t off, uint32_t flags, + struct iobref *iobref, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + local = dht_local_init (frame, NULL, fd, GF_FOP_WRITE); + if (!local) { + + op_errno = ENOMEM; + goto err; + } + + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + + local->rebalance.vector = iov_dup (vector, count); + local->rebalance.offset = off; + local->rebalance.count = count; + local->rebalance.flags = flags; + local->rebalance.iobref = iobref_ref (iobref); + local->call_cnt = 1; + + STACK_WIND (frame, dht_writev_cbk, + subvol, subvol->fops->writev, + fd, vector, count, off, flags, iobref, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (writev, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; +} + + + +int +dht_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + int ret = -1; + xlator_t *subvol = NULL; + inode_t *inode = NULL; + + GF_VALIDATE_OR_GOTO ("dht", frame, err); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", cookie, out); + + local = frame->local; + prev = cookie; + + if ((op_ret == -1) && (op_errno != ENOENT)) { + local->op_errno = op_errno; + local->op_ret = -1; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + + goto out; + } + + if (local->call_cnt != 1) { + if (local->stbuf.ia_blocks) { + dht_iatt_merge (this, postbuf, &local->stbuf, NULL); + dht_iatt_merge (this, prebuf, &local->prebuf, NULL); + } + goto out; + } + + local->rebalance.target_op_fn = dht_truncate2; + + local->op_errno = op_errno; + /* Phase 2 of migration */ + if ((op_ret == -1) || IS_DHT_MIGRATION_PHASE2 (postbuf)) { + ret = dht_rebalance_complete_check (this, frame); + if (!ret) + return 0; + } + + /* Check if the rebalance phase1 is true */ + if (IS_DHT_MIGRATION_PHASE1 (postbuf)) { + dht_iatt_merge (this, &local->stbuf, postbuf, NULL); + dht_iatt_merge (this, &local->prebuf, prebuf, NULL); + inode = (local->fd) ? local->fd->inode : local->loc.inode; + dht_inode_ctx_get1 (this, inode, &subvol); + if (subvol) { + dht_truncate2 (this, frame, 0); + return 0; + } + ret = dht_rebalance_in_progress_check (this, frame); + if (!ret) + return 0; + } + +out: + DHT_STRIP_PHASE1_FLAGS (postbuf); + DHT_STRIP_PHASE1_FLAGS (prebuf); + DHT_STACK_UNWIND (truncate, frame, op_ret, op_errno, + prebuf, postbuf, xdata); +err: + return 0; +} + + +int +dht_truncate2 (xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + inode_t *inode = NULL; + + local = frame->local; + + inode = local->fd ? local->fd->inode : local->loc.inode; + + dht_inode_ctx_get1 (this, inode, &subvol); + if (!subvol) + subvol = local->cached_subvol; + + local->call_cnt = 2; /* This is the second attempt */ + + if (local->fop == GF_FOP_TRUNCATE) { + STACK_WIND (frame, dht_truncate_cbk, subvol, + subvol->fops->truncate, &local->loc, + local->rebalance.offset, NULL); + } else { + STACK_WIND (frame, dht_truncate_cbk, subvol, + subvol->fops->ftruncate, local->fd, + local->rebalance.offset, NULL); + } + + return 0; +} + +int +dht_truncate (call_frame_t *frame, xlator_t *this, loc_t *loc, off_t offset, + dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); + VALIDATE_OR_GOTO (loc->path, err); + + local = dht_local_init (frame, loc, NULL, GF_FOP_TRUNCATE); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + local->rebalance.offset = offset; + local->call_cnt = 1; + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } + + STACK_WIND (frame, dht_truncate_cbk, + subvol, subvol->fops->truncate, + loc, offset, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (truncate, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; +} + +int +dht_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, + dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + local = dht_local_init (frame, NULL, fd, GF_FOP_FTRUNCATE); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + local->rebalance.offset = offset; + local->call_cnt = 1; + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + STACK_WIND (frame, dht_truncate_cbk, + subvol, subvol->fops->ftruncate, + fd, offset, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (ftruncate, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; +} + + +int +dht_fallocate_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + int ret = -1; + xlator_t *subvol = NULL; + + GF_VALIDATE_OR_GOTO ("dht", frame, err); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", cookie, out); + + local = frame->local; + prev = cookie; + + if ((op_ret == -1) && (op_errno != ENOENT)) { + local->op_errno = op_errno; + local->op_ret = -1; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + + goto out; + } + + if (local->call_cnt != 1) { + if (local->stbuf.ia_blocks) { + dht_iatt_merge (this, postbuf, &local->stbuf, NULL); + dht_iatt_merge (this, prebuf, &local->prebuf, NULL); + } + goto out; + } + local->rebalance.target_op_fn = dht_fallocate2; + + /* Phase 2 of migration */ + if ((op_ret == -1) || IS_DHT_MIGRATION_PHASE2 (postbuf)) { + ret = dht_rebalance_complete_check (this, frame); + if (!ret) + return 0; + } + + /* Check if the rebalance phase1 is true */ + if (IS_DHT_MIGRATION_PHASE1 (postbuf)) { + dht_iatt_merge (this, &local->stbuf, postbuf, NULL); + dht_iatt_merge (this, &local->prebuf, prebuf, NULL); + dht_inode_ctx_get1 (this, local->fd->inode, &subvol); + if (subvol) { + dht_fallocate2 (this, frame, 0); + return 0; + } + ret = dht_rebalance_in_progress_check (this, frame); + if (!ret) + return 0; + } + +out: + DHT_STRIP_PHASE1_FLAGS (postbuf); + DHT_STRIP_PHASE1_FLAGS (prebuf); + DHT_STACK_UNWIND (fallocate, frame, op_ret, op_errno, + prebuf, postbuf, xdata); +err: + return 0; +} + +int +dht_fallocate2(xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + + local = frame->local; + + dht_inode_ctx_get1 (this, local->fd->inode, &subvol); + + if (!subvol) + subvol = local->cached_subvol; + + local->call_cnt = 2; /* This is the second attempt */ + + STACK_WIND(frame, dht_fallocate_cbk, subvol, subvol->fops->fallocate, + local->fd, local->rebalance.flags, local->rebalance.offset, + local->rebalance.size, NULL); + + return 0; +} + +int +dht_fallocate(call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t mode, + off_t offset, size_t len, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + local = dht_local_init (frame, NULL, fd, GF_FOP_FALLOCATE); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + local->rebalance.flags = mode; + local->rebalance.offset = offset; + local->rebalance.size = len; + + local->call_cnt = 1; + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + STACK_WIND (frame, dht_fallocate_cbk, + subvol, subvol->fops->fallocate, + fd, mode, offset, len, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (fallocate, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; +} + + +int +dht_discard_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + int ret = -1; + xlator_t *subvol = NULL; + + GF_VALIDATE_OR_GOTO ("dht", frame, err); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", cookie, out); + + local = frame->local; + prev = cookie; + + if ((op_ret == -1) && (op_errno != ENOENT)) { + local->op_errno = op_errno; + local->op_ret = -1; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + + goto out; + } + + if (local->call_cnt != 1) { + if (local->stbuf.ia_blocks) { + dht_iatt_merge (this, postbuf, &local->stbuf, NULL); + dht_iatt_merge (this, prebuf, &local->prebuf, NULL); + } + goto out; + } + local->rebalance.target_op_fn = dht_discard2; + + /* Phase 2 of migration */ + if ((op_ret == -1) || IS_DHT_MIGRATION_PHASE2 (postbuf)) { + ret = dht_rebalance_complete_check (this, frame); + if (!ret) + return 0; + } + + /* Check if the rebalance phase1 is true */ + if (IS_DHT_MIGRATION_PHASE1 (postbuf)) { + dht_iatt_merge (this, &local->stbuf, postbuf, NULL); + dht_iatt_merge (this, &local->prebuf, prebuf, NULL); + dht_inode_ctx_get1 (this, local->fd->inode, &subvol); + if (subvol) { + dht_discard2 (this, frame, 0); + return 0; + } + ret = dht_rebalance_in_progress_check (this, frame); + if (!ret) + return 0; + } + +out: + DHT_STRIP_PHASE1_FLAGS (postbuf); + DHT_STRIP_PHASE1_FLAGS (prebuf); + DHT_STACK_UNWIND (discard, frame, op_ret, op_errno, + prebuf, postbuf, xdata); +err: + return 0; +} + +int +dht_discard2(xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + + local = frame->local; + + dht_inode_ctx_get1 (this, local->fd->inode, &subvol); + + if (!subvol) + subvol = local->cached_subvol; + + local->call_cnt = 2; /* This is the second attempt */ + + STACK_WIND(frame, dht_discard_cbk, subvol, subvol->fops->discard, + local->fd, local->rebalance.offset, local->rebalance.size, + NULL); + + return 0; +} + +int +dht_discard(call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, + size_t len, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + local = dht_local_init (frame, NULL, fd, GF_FOP_DISCARD); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + local->rebalance.offset = offset; + local->rebalance.size = len; + + local->call_cnt = 1; + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + STACK_WIND (frame, dht_discard_cbk, subvol, subvol->fops->discard, + fd, offset, len, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (discard, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; +} + +int +dht_zerofill_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + int ret = -1; + + GF_VALIDATE_OR_GOTO ("dht", frame, err); + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", frame->local, out); + GF_VALIDATE_OR_GOTO ("dht", cookie, out); + + local = frame->local; + prev = cookie; + + if ((op_ret == -1) && (op_errno != ENOENT)) { + local->op_errno = op_errno; + local->op_ret = -1; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + goto out; + } + + if (local->call_cnt != 1) { + if (local->stbuf.ia_blocks) { + dht_iatt_merge (this, postbuf, &local->stbuf, NULL); + dht_iatt_merge (this, prebuf, &local->prebuf, NULL); + } + goto out; + } + local->rebalance.target_op_fn = dht_zerofill2; + /* Phase 2 of migration */ + if ((op_ret == -1) || IS_DHT_MIGRATION_PHASE2 (postbuf)) { + ret = dht_rebalance_complete_check (this, frame); + if (!ret) + return 0; + } + + /* Check if the rebalance phase1 is true */ + if (IS_DHT_MIGRATION_PHASE1 (postbuf)) { + dht_iatt_merge (this, &local->stbuf, postbuf, NULL); + dht_iatt_merge (this, &local->prebuf, prebuf, NULL); + ret = fd_ctx_get (local->fd, this, NULL); + if (!ret) { + dht_zerofill2 (this, frame, 0); + return 0; + } + ret = dht_rebalance_in_progress_check (this, frame); + if (!ret) + return 0; + } + +out: + DHT_STRIP_PHASE1_FLAGS (postbuf); + DHT_STRIP_PHASE1_FLAGS (prebuf); + DHT_STACK_UNWIND (zerofill, frame, op_ret, op_errno, + prebuf, postbuf, xdata); +err: + return 0; +} + +int +dht_zerofill2(xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + uint64_t tmp_subvol = 0; + int ret = -1; + + local = frame->local; + + if (local->fd) + ret = fd_ctx_get (local->fd, this, &tmp_subvol); + if (!ret) + subvol = (xlator_t *)(long)tmp_subvol; + + if (!subvol) + subvol = local->cached_subvol; + + local->call_cnt = 2; /* This is the second attempt */ + + STACK_WIND(frame, dht_zerofill_cbk, subvol, subvol->fops->zerofill, + local->fd, local->rebalance.offset, local->rebalance.size, + NULL); + + return 0; +} + +int +dht_zerofill(call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, + size_t len, dict_t *xdata) +{ + xlator_t *subvol = NULL; + int op_errno = -1; + dht_local_t *local = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + local = dht_local_init (frame, NULL, fd, GF_FOP_ZEROFILL); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + local->rebalance.offset = offset; + local->rebalance.size = len; + + local->call_cnt = 1; + subvol = local->cached_subvol; + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no cached subvolume for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + STACK_WIND (frame, dht_zerofill_cbk, subvol, subvol->fops->zerofill, + fd, offset, len, xdata); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (zerofill, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; +} + + + +/* handle cases of migration here for 'setattr()' calls */ +int +dht_file_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + int ret = -1; + + local = frame->local; + prev = cookie; + + local->op_errno = op_errno; + if ((op_ret == -1) && (op_errno != ENOENT)) { + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + goto out; + } + + if (local->call_cnt != 1) + goto out; + + local->rebalance.target_op_fn = dht_setattr2; + + /* Phase 2 of migration */ + if ((op_ret == -1) || IS_DHT_MIGRATION_PHASE2 (postbuf)) { + ret = dht_rebalance_complete_check (this, frame); + if (!ret) + return 0; + } + + /* At the end of the migration process, whatever 'attr' we + have on source file will be migrated to destination file + in one shot, hence we don't need to check for in progress + state here (ie, PHASE1) */ +out: + DHT_STRIP_PHASE1_FLAGS (postbuf); + DHT_STRIP_PHASE1_FLAGS (prebuf); + DHT_STACK_UNWIND (setattr, frame, op_ret, op_errno, + prebuf, postbuf, xdata); + + return 0; +} + +int +dht_setattr2 (xlator_t *this, call_frame_t *frame, int op_ret) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + inode_t *inode = NULL; + + local = frame->local; + + inode = (local->fd) ? local->fd->inode : local->loc.inode; + + dht_inode_ctx_get1 (this, inode, &subvol); + + if (!subvol) + subvol = local->cached_subvol; + + local->call_cnt = 2; /* This is the second attempt */ + + if (local->fop == GF_FOP_SETATTR) { + STACK_WIND (frame, dht_file_setattr_cbk, subvol, + subvol->fops->setattr, &local->loc, + &local->rebalance.stbuf, local->rebalance.flags, + NULL); + } else { + STACK_WIND (frame, dht_file_setattr_cbk, subvol, + subvol->fops->fsetattr, local->fd, + &local->rebalance.stbuf, local->rebalance.flags, + NULL); + } + + return 0; +} + + +/* Keep the existing code same for all the cases other than regular file */ +int +dht_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *statpre, + struct iatt *statpost, dict_t *xdata) +{ + dht_local_t *local = NULL; + int this_call_cnt = 0; + call_frame_t *prev = NULL; + + + local = frame->local; + prev = cookie; + + LOCK (&frame->lock); + { + if (op_ret == -1) { + local->op_errno = op_errno; + gf_log (this->name, GF_LOG_DEBUG, + "subvolume %s returned -1 (%s)", + prev->this->name, strerror (op_errno)); + goto unlock; + } + + dht_iatt_merge (this, &local->prebuf, statpre, prev->this); + dht_iatt_merge (this, &local->stbuf, statpost, prev->this); + + local->op_ret = 0; + } +unlock: + UNLOCK (&frame->lock); + + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) + DHT_STACK_UNWIND (setattr, frame, local->op_ret, local->op_errno, + &local->prebuf, &local->stbuf, xdata); + + return 0; +} + + +int +dht_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc, + struct iatt *stbuf, int32_t valid, dict_t *xdata) +{ + xlator_t *subvol = NULL; + dht_layout_t *layout = NULL; + dht_local_t *local = NULL; + int op_errno = -1; + int i = -1; + int call_cnt = 0; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); + VALIDATE_OR_GOTO (loc->path, err); + + local = dht_local_init (frame, loc, NULL, GF_FOP_SETATTR); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + layout = local->layout; + if (!layout) { + gf_log (this->name, GF_LOG_DEBUG, + "no layout for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } + + if (!layout_is_sane (layout)) { + gf_log (this->name, GF_LOG_DEBUG, + "layout is not sane for path=%s", loc->path); + op_errno = EINVAL; + goto err; + } + + if (IA_ISREG (loc->inode->ia_type)) { + /* in the regular file _cbk(), we need to check for + migration possibilities */ + local->rebalance.stbuf = *stbuf; + local->rebalance.flags = valid; + local->call_cnt = 1; + subvol = local->cached_subvol; + + STACK_WIND (frame, dht_file_setattr_cbk, subvol, + subvol->fops->setattr, + loc, stbuf, valid, xdata); + + return 0; + } + + local->call_cnt = call_cnt = layout->cnt; + + for (i = 0; i < call_cnt; i++) { + STACK_WIND (frame, dht_setattr_cbk, + layout->list[i].xlator, + layout->list[i].xlator->fops->setattr, + loc, stbuf, valid, xdata); + } + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (setattr, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; +} + + +int +dht_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iatt *stbuf, + int32_t valid, dict_t *xdata) +{ + xlator_t *subvol = NULL; + dht_layout_t *layout = NULL; + dht_local_t *local = NULL; + int op_errno = -1; + int i = -1; + int call_cnt = 0; + + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + local = dht_local_init (frame, NULL, fd, GF_FOP_FSETATTR); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + layout = local->layout; + if (!layout) { + gf_log (this->name, GF_LOG_DEBUG, + "no layout for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + if (!layout_is_sane (layout)) { + gf_log (this->name, GF_LOG_DEBUG, + "layout is not sane for fd=%p", fd); + op_errno = EINVAL; + goto err; + } + + if (IA_ISREG (fd->inode->ia_type)) { + /* in the regular file _cbk(), we need to check for + migration possibilities */ + local->rebalance.stbuf = *stbuf; + local->rebalance.flags = valid; + local->call_cnt = 1; + subvol = local->cached_subvol; + + STACK_WIND (frame, dht_file_setattr_cbk, subvol, + subvol->fops->fsetattr, + fd, stbuf, valid, xdata); + + return 0; + } + + local->call_cnt = call_cnt = layout->cnt; + + for (i = 0; i < call_cnt; i++) { + STACK_WIND (frame, dht_setattr_cbk, + layout->list[i].xlator, + layout->list[i].xlator->fops->fsetattr, + fd, stbuf, valid, xdata); + } + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (fsetattr, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; +} diff --git a/xlators/cluster/dht/src/dht-layout.c b/xlators/cluster/dht/src/dht-layout.c index f2e3de14b..38e9970a7 100644 --- a/xlators/cluster/dht/src/dht-layout.c +++ b/xlators/cluster/dht/src/dht-layout.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef _CONFIG_H @@ -38,583 +29,763 @@ dht_layout_t * dht_layout_new (xlator_t *this, int cnt) { - dht_layout_t *layout = NULL; + dht_layout_t *layout = NULL; dht_conf_t *conf = NULL; conf = this->private; - layout = CALLOC (1, layout_size (cnt)); - if (!layout) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto out; - } + layout = GF_CALLOC (1, layout_size (cnt), + gf_dht_mt_dht_layout_t); + if (!layout) { + goto out; + } - layout->cnt = cnt; - if (conf) + layout->type = DHT_HASH_TYPE_DM; + layout->cnt = cnt; + + if (conf) { + layout->spread_cnt = conf->dir_spread_cnt; layout->gen = conf->gen; + } + + layout->ref = 1; out: - return layout; + return layout; } dht_layout_t * dht_layout_get (xlator_t *this, inode_t *inode) { - uint64_t layout = 0; - int ret = -1; + dht_conf_t *conf = NULL; + dht_layout_t *layout = NULL; - ret = inode_ctx_get (inode, this, &layout); + conf = this->private; + if (!conf) + goto out; + + LOCK (&conf->layout_lock); + { + dht_inode_ctx_layout_get (inode, this, &layout); + if (layout) { + layout->ref++; + } + } + UNLOCK (&conf->layout_lock); - return (dht_layout_t *)(long)layout; +out: + return layout; } -xlator_t * -dht_layout_search (xlator_t *this, dht_layout_t *layout, const char *name) +int +dht_layout_set (xlator_t *this, inode_t *inode, dht_layout_t *layout) { - uint32_t hash = 0; - xlator_t *subvol = NULL; - int i = 0; - int ret = 0; + dht_conf_t *conf = NULL; + int oldret = -1; + int ret = 0; + dht_layout_t *old_layout; + conf = this->private; + if (!conf) + goto out; - ret = dht_hash_compute (layout->type, name, &hash); - if (ret != 0) { - gf_log (this->name, GF_LOG_DEBUG, - "hash computation failed for type=%d name=%s", - layout->type, name); - goto out; - } + LOCK (&conf->layout_lock); + { + oldret = dht_inode_ctx_layout_get (inode, this, &old_layout); + layout->ref++; + dht_inode_ctx_layout_set (inode, this, layout); + } + UNLOCK (&conf->layout_lock); - for (i = 0; i < layout->cnt; i++) { - if (layout->list[i].start <= hash - && layout->list[i].stop >= hash) { - subvol = layout->list[i].xlator; - break; - } - } - - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume for hash (value) = %u", hash); - } + if (!oldret) { + dht_layout_unref (this, old_layout); + } out: - return subvol; + return ret; } -dht_layout_t * -dht_layout_for_subvol (xlator_t *this, xlator_t *subvol) +void +dht_layout_unref (xlator_t *this, dht_layout_t *layout) { - dht_conf_t *conf = NULL; - dht_layout_t *layout = NULL; - int i = 0; + dht_conf_t *conf = NULL; + int ref = 0; + if (!layout || layout->preset || !this->private) + return; - conf = this->private; + conf = this->private; - for (i = 0; i < conf->subvolume_cnt; i++) { - if (conf->subvolumes[i] == subvol) { - layout = conf->file_layouts[i]; - break; - } - } + LOCK (&conf->layout_lock); + { + ref = --layout->ref; + } + UNLOCK (&conf->layout_lock); - return layout; + if (!ref) + GF_FREE (layout); } -int -dht_layouts_init (xlator_t *this, dht_conf_t *conf) +dht_layout_t * +dht_layout_ref (xlator_t *this, dht_layout_t *layout) { - dht_layout_t *layout = NULL; - int i = 0; - int ret = -1; - - - conf->file_layouts = CALLOC (conf->subvolume_cnt, - sizeof (dht_layout_t *)); - if (!conf->file_layouts) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto out; - } + dht_conf_t *conf = NULL; - for (i = 0; i < conf->subvolume_cnt; i++) { - layout = dht_layout_new (this, 1); + if (layout->preset || !this->private) + return layout; - if (!layout) { - goto out; - } + conf = this->private; + LOCK (&conf->layout_lock); + { + layout->ref++; + } + UNLOCK (&conf->layout_lock); - layout->preset = 1; + return layout; +} - layout->list[0].xlator = conf->subvolumes[i]; - conf->file_layouts[i] = layout; - } +xlator_t * +dht_layout_search (xlator_t *this, dht_layout_t *layout, const char *name) +{ + uint32_t hash = 0; + xlator_t *subvol = NULL; + int i = 0; + int ret = 0; + + + ret = dht_hash_compute (this, layout->type, name, &hash); + if (ret != 0) { + gf_log (this->name, GF_LOG_WARNING, + "hash computation failed for type=%d name=%s", + layout->type, name); + goto out; + } + + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].start <= hash + && layout->list[i].stop >= hash) { + subvol = layout->list[i].xlator; + break; + } + } + + if (!subvol) { + gf_log (this->name, GF_LOG_WARNING, + "no subvolume for hash (value) = %u", hash); + } - ret = 0; out: - return ret; + return subvol; } -int -dht_disk_layout_extract (xlator_t *this, dht_layout_t *layout, - int pos, int32_t **disk_layout_p) +dht_layout_t * +dht_layout_for_subvol (xlator_t *this, xlator_t *subvol) { - int ret = -1; - int32_t *disk_layout = NULL; - - disk_layout = CALLOC (5, sizeof (int)); - if (!disk_layout) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto out; - } + dht_conf_t *conf = NULL; + dht_layout_t *layout = NULL; + int i = 0; - disk_layout[0] = hton32 (1); - disk_layout[1] = hton32 (layout->type); - disk_layout[2] = hton32 (layout->list[pos].start); - disk_layout[3] = hton32 (layout->list[pos].stop); + conf = this->private; + if (!conf) + goto out; - if (disk_layout_p) - *disk_layout_p = disk_layout; - ret = 0; + for (i = 0; i < conf->subvolume_cnt; i++) { + if (conf->subvolumes[i] == subvol) { + layout = conf->file_layouts[i]; + break; + } + } out: - return ret; + return layout; } int -dht_disk_layout_merge (xlator_t *this, dht_layout_t *layout, - int pos, int32_t *disk_layout) +dht_layouts_init (xlator_t *this, dht_conf_t *conf) { - int cnt = 0; - int type = 0; - int start_off = 0; - int stop_off = 0; + dht_layout_t *layout = NULL; + int i = 0; + int ret = -1; - /* TODO: assert disk_layout_ptr is of required length */ + if (!conf) + goto out; - cnt = ntoh32 (disk_layout[0]); - if (cnt != 1) { - gf_log (this->name, GF_LOG_DEBUG, - "disk layout has invalid count %d", cnt); - return -1; - } + conf->file_layouts = GF_CALLOC (conf->subvolume_cnt, + sizeof (dht_layout_t *), + gf_dht_mt_dht_layout_t); + if (!conf->file_layouts) { + goto out; + } + + for (i = 0; i < conf->subvolume_cnt; i++) { + layout = dht_layout_new (this, 1); + + if (!layout) { + goto out; + } - /* TODO: assert type is compatible */ - type = ntoh32 (disk_layout[1]); - start_off = ntoh32 (disk_layout[2]); - stop_off = ntoh32 (disk_layout[3]); + layout->preset = 1; - layout->list[pos].start = start_off; - layout->list[pos].stop = stop_off; + layout->list[0].xlator = conf->subvolumes[i]; - gf_log (this->name, GF_LOG_TRACE, - "merged to layout: %u - %u (type %d) from %s", - start_off, stop_off, type, - layout->list[pos].xlator->name); + conf->file_layouts[i] = layout; + } - return 0; + ret = 0; +out: + return ret; } int -dht_layout_merge (xlator_t *this, dht_layout_t *layout, xlator_t *subvol, - int op_ret, int op_errno, dict_t *xattr) +dht_disk_layout_extract (xlator_t *this, dht_layout_t *layout, + int pos, int32_t **disk_layout_p) { - int i = 0; - int ret = -1; - int err = -1; - int32_t *disk_layout = NULL; + int ret = -1; + int32_t *disk_layout = NULL; + disk_layout = GF_CALLOC (5, sizeof (int), + gf_dht_mt_int32_t); + if (!disk_layout) { + goto out; + } - if (op_ret != 0) { - err = op_errno; - } + disk_layout[0] = hton32 (1); + disk_layout[1] = hton32 (layout->type); + disk_layout[2] = hton32 (layout->list[pos].start); + disk_layout[3] = hton32 (layout->list[pos].stop); - for (i = 0; i < layout->cnt; i++) { - if (layout->list[i].xlator == NULL) { - layout->list[i].err = err; - layout->list[i].xlator = subvol; - break; - } - } + if (disk_layout_p) + *disk_layout_p = disk_layout; + else + GF_FREE (disk_layout); - if (op_ret != 0) { - ret = 0; - goto out; - } + ret = 0; + +out: + return ret; +} - if (xattr) { - /* during lookup and not mkdir */ - ret = dict_get_ptr (xattr, "trusted.glusterfs.dht", - VOID(&disk_layout)); - } - if (ret != 0) { - layout->list[i].err = -1; - gf_log (this->name, GF_LOG_TRACE, - "missing disk layout on %s. err = %d", - subvol->name, err); - ret = 0; - goto out; +int +dht_disk_layout_merge (xlator_t *this, dht_layout_t *layout, + int pos, void *disk_layout_raw, int disk_layout_len) +{ + int cnt = 0; + int type = 0; + int start_off = 0; + int stop_off = 0; + int disk_layout[4]; + + if (!disk_layout_raw) { + gf_log (this->name, GF_LOG_CRITICAL, + "error no layout on disk for merge"); + return -1; } - ret = dht_disk_layout_merge (this, layout, i, disk_layout); - if (ret != 0) { - gf_log (this->name, GF_LOG_DEBUG, - "layout merge from subvolume %s failed", - subvol->name); - goto out; + GF_ASSERT (disk_layout_len == sizeof (disk_layout)); + + memcpy (disk_layout, disk_layout_raw, disk_layout_len); + + cnt = ntoh32 (disk_layout[0]); + if (cnt != 1) { + gf_log (this->name, GF_LOG_ERROR, + "disk layout has invalid count %d", cnt); + return -1; + } + + type = ntoh32 (disk_layout[1]); + switch (type) { + case DHT_HASH_TYPE_DM_USER: + gf_log (this->name, GF_LOG_DEBUG, "found user-set layout"); + layout->type = type; + /* Fall through. */ + case DHT_HASH_TYPE_DM: + break; + default: + gf_log (this->name, GF_LOG_CRITICAL, + "Catastrophic error layout with unknown type found %d", + disk_layout[1]); + return -1; } - layout->list[i].err = 0; + + start_off = ntoh32 (disk_layout[2]); + stop_off = ntoh32 (disk_layout[3]); + + layout->list[pos].start = start_off; + layout->list[pos].stop = stop_off; + + gf_log (this->name, GF_LOG_TRACE, + "merged to layout: %u - %u (type %d) from %s", + start_off, stop_off, type, + layout->list[pos].xlator->name); + + return 0; +} + + +int +dht_layout_merge (xlator_t *this, dht_layout_t *layout, xlator_t *subvol, + int op_ret, int op_errno, dict_t *xattr) +{ + int i = 0; + int ret = -1; + int err = -1; + void *disk_layout_raw = NULL; + int disk_layout_len = 0; + dht_conf_t *conf = this->private; + + if (op_ret != 0) { + err = op_errno; + } + + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].xlator == NULL) { + layout->list[i].err = err; + layout->list[i].xlator = subvol; + break; + } + } + + if (op_ret != 0) { + ret = 0; + goto out; + } + + if (xattr) { + /* during lookup and not mkdir */ + ret = dict_get_ptr_and_len (xattr, conf->xattr_name, + &disk_layout_raw, &disk_layout_len); + } + + if (ret != 0) { + layout->list[i].err = 0; + gf_log (this->name, GF_LOG_TRACE, + "missing disk layout on %s. err = %d", + subvol->name, err); + ret = 0; + goto out; + } + + ret = dht_disk_layout_merge (this, layout, i, disk_layout_raw, + disk_layout_len); + if (ret != 0) { + gf_log (this->name, GF_LOG_WARNING, + "layout merge from subvolume %s failed", + subvol->name); + goto out; + } + layout->list[i].err = 0; out: - return ret; + return ret; } void dht_layout_entry_swap (dht_layout_t *layout, int i, int j) { - uint32_t start_swap = 0; - uint32_t stop_swap = 0; - xlator_t *xlator_swap = 0; - int err_swap = 0; - - - start_swap = layout->list[i].start; - stop_swap = layout->list[i].stop; - xlator_swap = layout->list[i].xlator; - err_swap = layout->list[i].err; - - layout->list[i].start = layout->list[j].start; - layout->list[i].stop = layout->list[j].stop; - layout->list[i].xlator = layout->list[j].xlator; - layout->list[i].err = layout->list[j].err; - - layout->list[j].start = start_swap; - layout->list[j].stop = stop_swap; - layout->list[j].xlator = xlator_swap; - layout->list[j].err = err_swap; + uint32_t start_swap = 0; + uint32_t stop_swap = 0; + xlator_t *xlator_swap = 0; + int err_swap = 0; + + start_swap = layout->list[i].start; + stop_swap = layout->list[i].stop; + xlator_swap = layout->list[i].xlator; + err_swap = layout->list[i].err; + + layout->list[i].start = layout->list[j].start; + layout->list[i].stop = layout->list[j].stop; + layout->list[i].xlator = layout->list[j].xlator; + layout->list[i].err = layout->list[j].err; + + layout->list[j].start = start_swap; + layout->list[j].stop = stop_swap; + layout->list[j].xlator = xlator_swap; + layout->list[j].err = err_swap; +} + +void +dht_layout_range_swap (dht_layout_t *layout, int i, int j) +{ + uint32_t start_swap = 0; + uint32_t stop_swap = 0; + + start_swap = layout->list[i].start; + stop_swap = layout->list[i].stop; + + layout->list[i].start = layout->list[j].start; + layout->list[i].stop = layout->list[j].stop; + + layout->list[j].start = start_swap; + layout->list[j].stop = stop_swap; } int64_t dht_layout_entry_cmp_volname (dht_layout_t *layout, int i, int j) { - return (strcmp (layout->list[i].xlator->name, - layout->list[j].xlator->name)); + return (strcmp (layout->list[i].xlator->name, + layout->list[j].xlator->name)); +} + + +gf_boolean_t +dht_is_subvol_in_layout (dht_layout_t *layout, xlator_t *xlator) +{ + int i = 0; + + for (i = 0; i < layout->cnt; i++) { + if (!strcmp (layout->list[i].xlator->name, xlator->name)) + return _gf_true; + } + return _gf_false; } int64_t dht_layout_entry_cmp (dht_layout_t *layout, int i, int j) { - int64_t diff = 0; - - if (layout->list[i].err || layout->list[j].err) - diff = layout->list[i].err - layout->list[j].err; - else - diff = (int64_t) layout->list[i].start - - (int64_t) layout->list[j].start; + int64_t diff = 0; + + /* swap zero'ed out layouts to front, if needed */ + if (!layout->list[j].start && !layout->list[j].stop) { + diff = (int64_t) layout->list[i].stop + - (int64_t) layout->list[j].stop; + goto out; + } + if (layout->list[i].err || layout->list[j].err) + diff = layout->list[i].err - layout->list[j].err; + else + diff = (int64_t) layout->list[i].start + - (int64_t) layout->list[j].start; - return diff; +out: + return diff; } int dht_layout_sort (dht_layout_t *layout) { - int i = 0; - int j = 0; - int64_t ret = 0; - - /* TODO: O(n^2) -- bad bad */ - - for (i = 0; i < layout->cnt - 1; i++) { - for (j = i + 1; j < layout->cnt; j++) { - ret = dht_layout_entry_cmp (layout, i, j); - if (ret > 0) - dht_layout_entry_swap (layout, i, j); - } - } + int i = 0; + int j = 0; + int64_t ret = 0; - return 0; + /* TODO: O(n^2) -- bad bad */ + + for (i = 0; i < layout->cnt - 1; i++) { + for (j = i + 1; j < layout->cnt; j++) { + ret = dht_layout_entry_cmp (layout, i, j); + if (ret > 0) + dht_layout_entry_swap (layout, i, j); + } + } + + return 0; } int dht_layout_sort_volname (dht_layout_t *layout) { - int i = 0; - int j = 0; - int64_t ret = 0; - - /* TODO: O(n^2) -- bad bad */ - - for (i = 0; i < layout->cnt - 1; i++) { - for (j = i + 1; j < layout->cnt; j++) { - ret = dht_layout_entry_cmp_volname (layout, i, j); - if (ret > 0) - dht_layout_entry_swap (layout, i, j); - } - } + int i = 0; + int j = 0; + int64_t ret = 0; + + /* TODO: O(n^2) -- bad bad */ - return 0; + for (i = 0; i < layout->cnt - 1; i++) { + for (j = i + 1; j < layout->cnt; j++) { + ret = dht_layout_entry_cmp_volname (layout, i, j); + if (ret > 0) + dht_layout_entry_swap (layout, i, j); + } + } + + return 0; } int dht_layout_anomalies (xlator_t *this, loc_t *loc, dht_layout_t *layout, - uint32_t *holes_p, uint32_t *overlaps_p, - uint32_t *missing_p, uint32_t *down_p, uint32_t *misc_p) + uint32_t *holes_p, uint32_t *overlaps_p, + uint32_t *missing_p, uint32_t *down_p, uint32_t *misc_p, + uint32_t *no_space_p) { - dht_conf_t *conf = NULL; - uint32_t holes = 0; - uint32_t overlaps = 0; - uint32_t missing = 0; - uint32_t down = 0; - uint32_t misc = 0; - uint32_t hole_cnt = 0; - uint32_t overlap_cnt = 0; - int i = 0; - int ret = 0; - uint32_t prev_stop = 0; - uint32_t last_stop = 0; - char is_virgin = 1; - - - conf = this->private; - - /* TODO: explain WTF is happening */ - - last_stop = layout->list[0].start - 1; - prev_stop = last_stop; - - for (i = 0; i < layout->cnt; i++) { - if (layout->list[i].err) { - switch (layout->list[i].err) { - case -1: - case ENOENT: - missing++; - break; - case ENOTCONN: - down++; - break; - case ENOSPC: - down++; - break; - default: - misc++; - } - continue; - } - - is_virgin = 0; - - if ((prev_stop + 1) < layout->list[i].start) { - hole_cnt++; - holes += (layout->list[i].start - (prev_stop + 1)); - } - - if ((prev_stop + 1) > layout->list[i].start) { - overlap_cnt++; - overlaps += ((prev_stop + 1) - layout->list[i].start); - } - prev_stop = layout->list[i].stop; - } + uint32_t overlaps = 0; + uint32_t missing = 0; + uint32_t down = 0; + uint32_t misc = 0; + uint32_t hole_cnt = 0; + uint32_t overlap_cnt = 0; + int i = 0; + int ret = 0; + uint32_t prev_stop = 0; + uint32_t last_stop = 0; + char is_virgin = 1; + uint32_t no_space = 0; + + /* TODO: explain what is happening */ + + last_stop = layout->list[0].start - 1; + prev_stop = last_stop; + + for (i = 0; i < layout->cnt; i++) { + switch (layout->list[i].err) { + case -1: + case ENOENT: + missing++; + continue; + case ENOTCONN: + down++; + continue; + case ENOSPC: + no_space++; + continue; + case 0: + /* if err == 0 and start == stop, then it is a non misc++; + * participating subvolume(spread-cnt). Then, do not + * check for anomalies. If start != stop, then treat it + * as misc err */ + if (layout->list[i].start == layout->list[i].stop) { + continue; + } + break; + default: + misc++; + continue; + } + + is_virgin = 0; + + if ((prev_stop + 1) < layout->list[i].start) { + hole_cnt++; + } - if ((last_stop - prev_stop) || is_virgin) - hole_cnt++; - holes += (last_stop - prev_stop); + if ((prev_stop + 1) > layout->list[i].start) { + overlap_cnt++; + overlaps += ((prev_stop + 1) - layout->list[i].start); + } + prev_stop = layout->list[i].stop; + } + + if ((last_stop - prev_stop) || is_virgin) + hole_cnt++; + + if (holes_p) + *holes_p = hole_cnt; - if (holes_p) - *holes_p = hole_cnt; + if (overlaps_p) + *overlaps_p = overlap_cnt; - if (overlaps_p) - *overlaps_p = overlap_cnt; + if (missing_p) + *missing_p = missing; - if (missing_p) - *missing_p = missing; + if (down_p) + *down_p = down; - if (down_p) - *down_p = down; + if (misc_p) + *misc_p = misc; - if (misc_p) - *misc_p = misc; + if (no_space_p) + *no_space_p = no_space; - return ret; + return ret; } int dht_layout_normalize (xlator_t *this, loc_t *loc, dht_layout_t *layout) { - int ret = 0; - int i = 0; - uint32_t holes = 0; - uint32_t overlaps = 0; - uint32_t missing = 0; - uint32_t down = 0; - uint32_t misc = 0; - - - ret = dht_layout_sort (layout); - if (ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "sort failed?! how the ...."); - goto out; - } - - ret = dht_layout_anomalies (this, loc, layout, - &holes, &overlaps, - &missing, &down, &misc); - if (ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "error while finding anomalies in %s -- not good news", - loc->path); - goto out; - } - - if (holes || overlaps) { - if (missing == layout->cnt) { - gf_log (this->name, GF_LOG_DEBUG, - "directory %s looked up first time", - loc->path); - } else { - gf_log (this->name, GF_LOG_DEBUG, - "found anomalies in %s. holes=%d overlaps=%d", - loc->path, holes, overlaps); - } - ret = 1; - } + int ret = 0; + int i = 0; + uint32_t holes = 0; + uint32_t overlaps = 0; + uint32_t missing = 0; + uint32_t down = 0; + uint32_t misc = 0; + + ret = dht_layout_sort (layout); + if (ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "sort failed?! how the ...."); + goto out; + } + + ret = dht_layout_anomalies (this, loc, layout, + &holes, &overlaps, + &missing, &down, &misc, NULL); + if (ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "error while finding anomalies in %s -- not good news", + loc->path); + goto out; + } + + if (holes || overlaps) { + if (missing == layout->cnt) { + gf_log (this->name, GF_LOG_DEBUG, + "directory %s looked up first time", + loc->path); + } else { + gf_log (this->name, GF_LOG_INFO, + "found anomalies in %s. holes=%d overlaps=%d", + loc->path, holes, overlaps); + } + ret = -1; + } + + for (i = 0; i < layout->cnt; i++) { + /* TODO During DHT selfheal rewrite (almost) find a better place + * to detect this - probably in dht_layout_anomalies() + */ + if (layout->list[i].err > 0) { + gf_log_callingfn (this->name, GF_LOG_DEBUG, + "path=%s err=%s on subvol=%s", + loc->path, + strerror (layout->list[i].err), + (layout->list[i].xlator ? + layout->list[i].xlator->name + : "<>")); + if ((layout->list[i].err == ENOENT) && (ret >= 0)) { + ret++; + } + } + } - for (i = 0; i < layout->cnt; i++) { - /* TODO During DHT selfheal rewrite (almost) find a better place to - * detect this - probably in dht_layout_anomalies() - */ - if (layout->list[i].err > 0) { - gf_log (this->name, GF_LOG_DEBUG, - "path=%s err=%s on subvol=%s", - loc->path, strerror (layout->list[i].err), - (layout->list[i].xlator ? - layout->list[i].xlator->name : "<>")); - if (layout->list[i].err == ENOENT) - ret = 1; - } - } out: - return ret; + return ret; } +int +dht_dir_has_layout (dict_t *xattr, char *name) +{ + + void *disk_layout_raw = NULL; + + return dict_get_ptr (xattr, name, &disk_layout_raw); +} int dht_layout_dir_mismatch (xlator_t *this, dht_layout_t *layout, xlator_t *subvol, - loc_t *loc, dict_t *xattr) + loc_t *loc, dict_t *xattr) { - int idx = 0; - int pos = -1; - int ret = 0; - int err = 0; - int dict_ret = 0; - int32_t *disk_layout = NULL; - int32_t count = -1; - uint32_t start_off = -1; - uint32_t stop_off = -1; - - - for (idx = 0; idx < layout->cnt; idx++) { - if (layout->list[idx].xlator == subvol) { - pos = idx; - break; - } - } - - if (pos == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "%s - no layout info for subvolume %s", - loc->path, subvol->name); - ret = 1; - goto out; - } + int idx = 0; + int pos = -1; + int ret = 0; + int err = 0; + int dict_ret = 0; + int32_t disk_layout[4]; + void *disk_layout_raw = NULL; + int32_t count = -1; + uint32_t start_off = -1; + uint32_t stop_off = -1; + dht_conf_t *conf = this->private; + + + for (idx = 0; idx < layout->cnt; idx++) { + if (layout->list[idx].xlator == subvol) { + pos = idx; + break; + } + } + + if (pos == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s - no layout info for subvolume %s", + loc->path, subvol->name); + ret = 1; + goto out; + } err = layout->list[pos].err; - if (!xattr) { + if (!xattr) { if (err == 0) { - gf_log (this->name, GF_LOG_DEBUG, + gf_log (this->name, GF_LOG_INFO, "%s - xattr dictionary is NULL", loc->path); ret = -1; } - goto out; - } + goto out; + } + + dict_ret = dict_get_ptr (xattr, conf->xattr_name, + &disk_layout_raw); - dict_ret = dict_get_ptr (xattr, "trusted.glusterfs.dht", - VOID(&disk_layout)); - - if (dict_ret < 0) { + if (dict_ret < 0) { if (err == 0) { - gf_log (this->name, GF_LOG_DEBUG, + gf_log (this->name, GF_LOG_INFO, "%s - disk layout missing", loc->path); ret = -1; } - goto out; - } - - count = ntoh32 (disk_layout[0]); - if (count != 1) { - gf_log (this->name, GF_LOG_DEBUG, - "%s - disk layout has invalid count %d", - loc->path, count); - ret = -1; - goto out; - } - - start_off = ntoh32 (disk_layout[2]); - stop_off = ntoh32 (disk_layout[3]); - - if ((layout->list[pos].start != start_off) - || (layout->list[pos].stop != stop_off)) { - gf_log (this->name, GF_LOG_DEBUG, - "subvol: %s; inode layout - %"PRId32" - %"PRId32"; " - "disk layout - %"PRId32" - %"PRId32, - layout->list[pos].xlator->name, - layout->list[pos].start, layout->list[pos].stop, - start_off, stop_off); - ret = 1; - } else { - ret = 0; - } + goto out; + } + + memcpy (disk_layout, disk_layout_raw, sizeof (disk_layout)); + + count = ntoh32 (disk_layout[0]); + if (count != 1) { + gf_log (this->name, GF_LOG_ERROR, + "%s - disk layout has invalid count %d", + loc->path, count); + ret = -1; + goto out; + } + + start_off = ntoh32 (disk_layout[2]); + stop_off = ntoh32 (disk_layout[3]); + + if ((layout->list[pos].start != start_off) + || (layout->list[pos].stop != stop_off)) { + gf_log (this->name, GF_LOG_INFO, + "subvol: %s; inode layout - %"PRIu32" - %"PRIu32"; " + "disk layout - %"PRIu32" - %"PRIu32, + layout->list[pos].xlator->name, + layout->list[pos].start, layout->list[pos].stop, + start_off, stop_off); + ret = 1; + } else { + ret = 0; + } out: - return ret; + return ret; } int -dht_layout_inode_set (xlator_t *this, xlator_t *subvol, inode_t *inode) +dht_layout_preset (xlator_t *this, xlator_t *subvol, inode_t *inode) { dht_layout_t *layout = NULL; - int ret = -1; - - layout = dht_layout_for_subvol (this, subvol); - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no pre-set layout for subvolume %s", - subvol ? subvol->name : "<nil>"); - ret = -1; - goto out; - } + int ret = -1; + dht_conf_t *conf = NULL; + + conf = this->private; + if (!conf) + goto out; + + layout = dht_layout_for_subvol (this, subvol); + if (!layout) { + gf_log (this->name, GF_LOG_INFO, + "no pre-set layout for subvolume %s", + subvol ? subvol->name : "<nil>"); + ret = -1; + goto out; + } + + LOCK (&conf->layout_lock); + { + dht_inode_ctx_layout_set (inode, this, layout); + } + UNLOCK (&conf->layout_lock); - inode_ctx_put (inode, this, (uint64_t)(long)layout); - ret = 0; out: return ret; diff --git a/xlators/cluster/dht/src/dht-linkfile.c b/xlators/cluster/dht/src/dht-linkfile.c index 213d3f2bf..dbc9d0b3c 100644 --- a/xlators/cluster/dht/src/dht-linkfile.c +++ b/xlators/cluster/dht/src/dht-linkfile.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef _CONFIG_H @@ -28,197 +19,310 @@ #include "compat.h" #include "dht-common.h" - - int -dht_linkfile_xattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno) +dht_linkfile_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent) { - dht_local_t *local = NULL; - - - local = frame->local; - local->linkfile.linkfile_cbk (frame, cookie, this, op_ret, op_errno, - local->linkfile.inode, - &local->linkfile.stbuf); - - return 0; + char is_linkfile = 0; + dht_conf_t *conf = NULL; + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + + local = frame->local; + prev = cookie; + conf = this->private; + + if (op_ret) + goto out; + + is_linkfile = check_is_linkfile (inode, stbuf, xattr, + conf->link_xattr_name); + if (!is_linkfile) + gf_log (this->name, GF_LOG_WARNING, "got non-linkfile %s:%s", + prev->this->name, local->loc.path); +out: + local->linkfile.linkfile_cbk (frame, cookie, this, op_ret, op_errno, + inode, stbuf, postparent, postparent, + xattr); + return 0; } - +#define is_equal(a, b) (a == b) int dht_linkfile_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf) + int op_ret, int op_errno, inode_t *inode, + struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - dht_local_t *local = NULL; - call_frame_t *prev = NULL; - dict_t *xattr = NULL; - data_t *str_data = NULL; - int ret = -1; - - local = frame->local; - prev = cookie; - - if (op_ret == -1) - goto err; - - xattr = get_new_dict (); - if (!xattr) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } - - local->linkfile.xattr = dict_ref (xattr); - local->linkfile.inode = inode_ref (inode); - - str_data = str_to_data (local->linkfile.srcvol->name); - if (!str_data) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } - - ret = dict_set (xattr, "trusted.glusterfs.dht.linkto", str_data); - if (ret < 0) { - gf_log (this->name, GF_LOG_DEBUG, - "failed to initialize linkfile data"); - op_errno = EINVAL; - } - str_data = NULL; - - local->linkfile.stbuf = *stbuf; - - STACK_WIND (frame, dht_linkfile_xattr_cbk, - prev->this, prev->this->fops->setxattr, - &local->linkfile.loc, local->linkfile.xattr, 0); - - return 0; - -err: - if (str_data) { - data_destroy (str_data); - str_data = NULL; - } - - local->linkfile.linkfile_cbk (frame, cookie, this, - op_ret, op_errno, inode, stbuf); - return 0; + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + call_frame_t *prev = NULL; + dict_t *xattrs = NULL; + dht_conf_t *conf = NULL; + int ret = -1; + + local = frame->local; + + if (!op_ret) + local->linked = _gf_true; + + FRAME_SU_UNDO (frame, dht_local_t); + + if (op_ret && (op_errno == EEXIST)) { + conf = this->private; + prev = cookie; + subvol = prev->this; + if (!subvol) + goto out; + xattrs = dict_new (); + if (!xattrs) + goto out; + ret = dict_set_uint32 (xattrs, conf->link_xattr_name, 256); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to set linkto key"); + goto out; + } + + STACK_WIND (frame, dht_linkfile_lookup_cbk, subvol, + subvol->fops->lookup, &local->loc, xattrs); + if (xattrs) + dict_unref (xattrs); + return 0; + } +out: + local->linkfile.linkfile_cbk (frame, cookie, this, op_ret, op_errno, + inode, stbuf, preparent, postparent, + xdata); + if (xattrs) + dict_unref (xattrs); + return 0; } int dht_linkfile_create (call_frame_t *frame, fop_mknod_cbk_t linkfile_cbk, - xlator_t *tovol, xlator_t *fromvol, loc_t *loc) + xlator_t *this, + xlator_t *tovol, xlator_t *fromvol, loc_t *loc) { - dht_local_t *local = NULL; - - - local = frame->local; - local->linkfile.linkfile_cbk = linkfile_cbk; - local->linkfile.srcvol = tovol; - loc_copy (&local->linkfile.loc, loc); + dht_local_t *local = NULL; + dict_t *dict = NULL; + int need_unref = 0; + int ret = 0; + dht_conf_t *conf = this->private; + + local = frame->local; + local->linkfile.linkfile_cbk = linkfile_cbk; + local->linkfile.srcvol = tovol; + + local->linked = _gf_false; + + dict = local->params; + if (!dict) { + dict = dict_new (); + if (!dict) + goto out; + need_unref = 1; + } + + if (!uuid_is_null (local->gfid)) { + ret = dict_set_static_bin (dict, "gfid-req", local->gfid, 16); + if (ret) + gf_log ("dht-linkfile", GF_LOG_INFO, + "%s: gfid set failed", loc->path); + } + + ret = dict_set_str (dict, GLUSTERFS_INTERNAL_FOP_KEY, "yes"); + if (ret) + gf_log ("dht-linkfile", GF_LOG_INFO, + "%s: internal-fop set failed", loc->path); + + ret = dict_set_str (dict, conf->link_xattr_name, tovol->name); + + if (ret < 0) { + gf_log (frame->this->name, GF_LOG_INFO, + "%s: failed to initialize linkfile data", + loc->path); + goto out; + } + + local->link_subvol = fromvol; + /* Always create as root:root. dht_linkfile_attr_heal fixes the + * ownsership */ + FRAME_SU_DO (frame, dht_local_t); + STACK_WIND (frame, dht_linkfile_create_cbk, + fromvol, fromvol->fops->mknod, loc, + S_IFREG | DHT_LINKFILE_MODE, 0, 0, dict); + + if (need_unref && dict) + dict_unref (dict); + + return 0; +out: + local->linkfile.linkfile_cbk (frame, NULL, frame->this, -1, ENOMEM, + loc->inode, NULL, NULL, NULL, NULL); - STACK_WIND (frame, dht_linkfile_create_cbk, - fromvol, fromvol->fops->mknod, loc, - S_IFREG | DHT_LINKFILE_MODE, 0); + if (need_unref && dict) + dict_unref (dict); - return 0; + return 0; } int dht_linkfile_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) + int32_t op_ret, int32_t op_errno, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) { - dht_local_t *local = NULL; - call_frame_t *prev = NULL; - xlator_t *subvol = NULL; + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + xlator_t *subvol = NULL; - local = frame->local; - prev = cookie; - subvol = prev->this; + local = frame->local; + prev = cookie; + subvol = prev->this; - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "unlinking linkfile %s on %s failed (%s)", - local->loc.path, subvol->name, strerror (op_errno)); - } + if (op_ret == -1) { + gf_log (this->name, GF_LOG_INFO, + "unlinking linkfile %s on %s failed (%s)", + local->loc.path, subvol->name, strerror (op_errno)); + } - DHT_STACK_DESTROY (frame); + DHT_STACK_DESTROY (frame); - return 0; + return 0; } int dht_linkfile_unlink (call_frame_t *frame, xlator_t *this, - xlator_t *subvol, loc_t *loc) + xlator_t *subvol, loc_t *loc) { - call_frame_t *unlink_frame = NULL; - dht_local_t *unlink_local = NULL; - - unlink_frame = copy_frame (frame); - if (!unlink_frame) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - unlink_local = dht_local_init (unlink_frame); - if (!unlink_local) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - loc_copy (&unlink_local->loc, loc); - - STACK_WIND (unlink_frame, dht_linkfile_unlink_cbk, - subvol, subvol->fops->unlink, - &unlink_local->loc); - - return 0; + call_frame_t *unlink_frame = NULL; + dht_local_t *unlink_local = NULL; + + unlink_frame = copy_frame (frame); + if (!unlink_frame) { + goto err; + } + + /* Using non-fop value here, as anyways, 'local->fop' is not used in + this particular case */ + unlink_local = dht_local_init (unlink_frame, loc, NULL, + GF_FOP_MAXVALUE); + if (!unlink_local) { + goto err; + } + + STACK_WIND (unlink_frame, dht_linkfile_unlink_cbk, + subvol, subvol->fops->unlink, + &unlink_local->loc, 0, NULL); + + return 0; err: - if (unlink_frame) - DHT_STACK_DESTROY (unlink_frame); + if (unlink_frame) + DHT_STACK_DESTROY (unlink_frame); - return -1; + return -1; } xlator_t * -dht_linkfile_subvol (xlator_t *this, inode_t *inode, struct stat *stbuf, - dict_t *xattr) +dht_linkfile_subvol (xlator_t *this, inode_t *inode, struct iatt *stbuf, + dict_t *xattr) { - dht_conf_t *conf = NULL; - xlator_t *subvol = NULL; - void *volname = NULL; - int i = 0, ret = 0; - + dht_conf_t *conf = NULL; + xlator_t *subvol = NULL; + void *volname = NULL; + int i = 0, ret = 0; - conf = this->private; + conf = this->private; - if (!xattr) - goto out; + if (!xattr) + goto out; - ret = dict_get_ptr (xattr, "trusted.glusterfs.dht.linkto", &volname); + ret = dict_get_ptr (xattr, conf->link_xattr_name, &volname); - if ((-1 == ret) || !volname) - goto out; + if ((-1 == ret) || !volname) + goto out; - for (i = 0; i < conf->subvolume_cnt; i++) { - if (strcmp (conf->subvolumes[i]->name, (char *)volname) == 0) { - subvol = conf->subvolumes[i]; - break; - } - } + for (i = 0; i < conf->subvolume_cnt; i++) { + if (strcmp (conf->subvolumes[i]->name, (char *)volname) == 0) { + subvol = conf->subvolumes[i]; + break; + } + } out: - return subvol; + return subvol; +} + +int +dht_linkfile_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *statpre, + struct iatt *statpost, dict_t *xdata) +{ + dht_local_t *local = NULL; + loc_t *loc = NULL; + + local = frame->local; + loc = &local->loc; + + if (op_ret) + gf_log (this->name, GF_LOG_ERROR, "setattr of uid/gid on %s" + " :<gfid:%s> failed (%s)", + (loc->path? loc->path: "NULL"), + uuid_utoa(local->gfid), strerror(op_errno)); + + DHT_STACK_DESTROY (frame); + + return 0; } +int +dht_linkfile_attr_heal (call_frame_t *frame, xlator_t *this) +{ + int ret = -1; + call_frame_t *copy = NULL; + dht_local_t *local = NULL; + dht_local_t *copy_local = NULL; + xlator_t *subvol = NULL; + struct iatt stbuf = {0,}; + + local = frame->local; + + GF_VALIDATE_OR_GOTO ("dht", local, out); + GF_VALIDATE_OR_GOTO ("dht", local->link_subvol, out); + + if (local->stbuf.ia_type == IA_INVAL) + return 0; + + uuid_copy (local->loc.gfid, local->stbuf.ia_gfid); + copy = copy_frame (frame); + + if (!copy) + goto out; + + copy_local = dht_local_init (copy, &local->loc, NULL, 0); + + if (!copy_local) + goto out; + + stbuf = local->stbuf; + subvol = local->link_subvol; + + copy->local = copy_local; + + FRAME_SU_DO (copy, dht_local_t); + + STACK_WIND (copy, dht_linkfile_setattr_cbk, subvol, + subvol->fops->setattr, ©_local->loc, + &stbuf, (GF_SET_ATTR_UID | GF_SET_ATTR_GID), NULL); + ret = 0; +out: + return ret; +} diff --git a/xlators/cluster/dht/src/dht-mem-types.h b/xlators/cluster/dht/src/dht-mem-types.h new file mode 100644 index 000000000..e893eb48f --- /dev/null +++ b/xlators/cluster/dht/src/dht-mem-types.h @@ -0,0 +1,35 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + + +#ifndef __DHT_MEM_TYPES_H__ +#define __DHT_MEM_TYPES_H__ + +#include "mem-types.h" + +enum gf_dht_mem_types_ { + gf_dht_mt_dht_du_t = gf_common_mt_end + 1, + gf_dht_mt_dht_conf_t, + gf_dht_mt_char, + gf_dht_mt_int32_t, + gf_dht_mt_xlator_t, + gf_dht_mt_dht_layout_t, + gf_switch_mt_dht_conf_t, + gf_switch_mt_dht_du_t, + gf_switch_mt_switch_sched_array, + gf_switch_mt_switch_struct, + gf_dht_mt_subvol_time, + gf_dht_mt_loc_t, + gf_defrag_info_mt, + gf_dht_mt_inode_ctx_t, + gf_dht_mt_ctx_stat_time_t, + gf_dht_mt_end +}; +#endif diff --git a/xlators/cluster/dht/src/dht-rebalance.c b/xlators/cluster/dht/src/dht-rebalance.c new file mode 100644 index 000000000..bcb19f23e --- /dev/null +++ b/xlators/cluster/dht/src/dht-rebalance.c @@ -0,0 +1,1815 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "dht-common.h" +#include "xlator.h" +#include <fnmatch.h> + +#define GF_DISK_SECTOR_SIZE 512 +#define DHT_REBALANCE_PID 4242 /* Change it if required */ +#define DHT_REBALANCE_BLKSIZE (128 * 1024) + +static int +dht_write_with_holes (xlator_t *to, fd_t *fd, struct iovec *vec, int count, + int32_t size, off_t offset, struct iobref *iobref) +{ + int i = 0; + int ret = -1; + int start_idx = 0; + int tmp_offset = 0; + int write_needed = 0; + int buf_len = 0; + int size_pending = 0; + char *buf = NULL; + + /* loop through each vector */ + for (i = 0; i < count; i++) { + buf = vec[i].iov_base; + buf_len = vec[i].iov_len; + + for (start_idx = 0; (start_idx + GF_DISK_SECTOR_SIZE) <= buf_len; + start_idx += GF_DISK_SECTOR_SIZE) { + + if (mem_0filled (buf + start_idx, GF_DISK_SECTOR_SIZE) != 0) { + write_needed = 1; + continue; + } + + if (write_needed) { + ret = syncop_write (to, fd, (buf + tmp_offset), + (start_idx - tmp_offset), + (offset + tmp_offset), + iobref, 0); + /* 'path' will be logged in calling function */ + if (ret < 0) { + gf_log (THIS->name, GF_LOG_WARNING, + "failed to write (%s)", + strerror (errno)); + goto out; + } + + write_needed = 0; + } + tmp_offset = start_idx + GF_DISK_SECTOR_SIZE; + } + + if ((start_idx < buf_len) || write_needed) { + /* This means, last chunk is not yet written.. write it */ + ret = syncop_write (to, fd, (buf + tmp_offset), + (buf_len - tmp_offset), + (offset + tmp_offset), iobref, 0); + if (ret < 0) { + /* 'path' will be logged in calling function */ + gf_log (THIS->name, GF_LOG_WARNING, + "failed to write (%s)", + strerror (errno)); + goto out; + } + } + + size_pending = (size - buf_len); + if (!size_pending) + break; + } + + ret = size; +out: + return ret; + +} + +int32_t +gf_defrag_handle_hardlink (xlator_t *this, loc_t *loc, dict_t *xattrs, + struct iatt *stbuf) +{ + int32_t ret = -1; + xlator_t *cached_subvol = NULL; + xlator_t *hashed_subvol = NULL; + xlator_t *linkto_subvol = NULL; + data_t *data = NULL; + struct iatt iatt = {0,}; + int32_t op_errno = 0; + dht_conf_t *conf = NULL; + + GF_VALIDATE_OR_GOTO ("defrag", loc, out); + GF_VALIDATE_OR_GOTO ("defrag", loc->name, out); + GF_VALIDATE_OR_GOTO ("defrag", stbuf, out); + GF_VALIDATE_OR_GOTO ("defrag", this, out); + GF_VALIDATE_OR_GOTO ("defrag", xattrs, out); + GF_VALIDATE_OR_GOTO ("defrag", this->private, out); + + conf = this->private; + + if (uuid_is_null (loc->pargfid)) { + gf_log ("", GF_LOG_ERROR, "loc->pargfid is NULL for " + "%s", loc->path); + goto out; + } + + if (uuid_is_null (loc->gfid)) { + gf_log ("", GF_LOG_ERROR, "loc->gfid is NULL for " + "%s", loc->path); + goto out; + } + + cached_subvol = dht_subvol_get_cached (this, loc->inode); + if (!cached_subvol) { + gf_log (this->name, GF_LOG_ERROR, "Failed to get cached subvol" + " for %s on %s", loc->name, this->name); + goto out; + } + + hashed_subvol = dht_subvol_get_hashed (this, loc); + if (!hashed_subvol) { + gf_log (this->name, GF_LOG_ERROR, "Failed to get hashed subvol" + " for %s on %s", loc->name, this->name); + goto out; + } + + gf_log (this->name, GF_LOG_INFO, "Attempting to migrate hardlink %s " + "with gfid %s from %s -> %s", loc->name, uuid_utoa (loc->gfid), + cached_subvol->name, hashed_subvol->name); + data = dict_get (xattrs, conf->link_xattr_name); + /* set linkto on cached -> hashed if not present, else link it */ + if (!data) { + ret = dict_set_str (xattrs, conf->link_xattr_name, + hashed_subvol->name); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to set " + "linkto xattr in dict for %s", loc->name); + goto out; + } + + ret = syncop_setxattr (cached_subvol, loc, xattrs, 0); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Linkto setxattr " + "failed %s -> %s (%s)", cached_subvol->name, + loc->name, strerror (errno)); + goto out; + } + goto out; + } else { + linkto_subvol = dht_linkfile_subvol (this, NULL, NULL, xattrs); + if (!linkto_subvol) { + gf_log (this->name, GF_LOG_ERROR, "Failed to get " + "linkto subvol for %s", loc->name); + } else { + hashed_subvol = linkto_subvol; + } + + ret = syncop_link (hashed_subvol, loc, loc); + if (ret) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, "link of %s -> %s" + " failed on subvol %s (%s)", loc->name, + uuid_utoa(loc->gfid), + hashed_subvol->name, strerror (op_errno)); + if (op_errno != EEXIST) + goto out; + } + } + ret = syncop_lookup (hashed_subvol, loc, NULL, &iatt, NULL, NULL); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed lookup %s on %s (%s)" + , loc->name, hashed_subvol->name, strerror (errno)); + goto out; + } + + if (iatt.ia_nlink == stbuf->ia_nlink) { + ret = dht_migrate_file (this, loc, cached_subvol, hashed_subvol, + GF_DHT_MIGRATE_HARDLINK_IN_PROGRESS); + if (ret) + goto out; + } + ret = 0; +out: + return ret; +} + + +static inline int +__is_file_migratable (xlator_t *this, loc_t *loc, + struct iatt *stbuf, dict_t *xattrs, int flags) +{ + int ret = -1; + + if (IA_ISDIR (stbuf->ia_type)) { + gf_log (this->name, GF_LOG_WARNING, + "%s: migrate-file called on directory", loc->path); + ret = -1; + goto out; + } + + if (flags == GF_DHT_MIGRATE_HARDLINK_IN_PROGRESS) { + ret = 0; + goto out; + } + if (stbuf->ia_nlink > 1) { + /* support for decomission */ + if (flags == GF_DHT_MIGRATE_HARDLINK) { + ret = gf_defrag_handle_hardlink (this, loc, + xattrs, stbuf); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to migrate file with link", + loc->path); + } + } else { + gf_log (this->name, GF_LOG_WARNING, + "%s: file has hardlinks", loc->path); + } + ret = ENOTSUP; + goto out; + } + + ret = 0; + +out: + return ret; +} + +static inline int +__dht_rebalance_create_dst_file (xlator_t *to, xlator_t *from, loc_t *loc, struct iatt *stbuf, + dict_t *dict, fd_t **dst_fd, dict_t *xattr) +{ + xlator_t *this = NULL; + int ret = -1; + fd_t *fd = NULL; + struct iatt new_stbuf = {0,}; + dht_conf_t *conf = NULL; + + this = THIS; + conf = this->private; + + ret = dict_set_static_bin (dict, "gfid-req", stbuf->ia_gfid, 16); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to set gfid in dict for create", loc->path); + goto out; + } + + ret = dict_set_str (dict, conf->link_xattr_name, from->name); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to set gfid in dict for create", loc->path); + goto out; + } + + fd = fd_create (loc->inode, DHT_REBALANCE_PID); + if (!fd) { + gf_log (this->name, GF_LOG_ERROR, + "%s: fd create failed (destination) (%s)", + loc->path, strerror (errno)); + ret = -1; + goto out; + } + + ret = syncop_lookup (to, loc, NULL, &new_stbuf, NULL, NULL); + if (!ret) { + /* File exits in the destination, check if gfid matches */ + if (uuid_compare (stbuf->ia_gfid, new_stbuf.ia_gfid) != 0) { + gf_log (this->name, GF_LOG_ERROR, + "file %s exits in %s with different gfid", + loc->path, to->name); + fd_unref (fd); + goto out; + } + } + if ((ret == -1) && (errno != ENOENT)) { + /* File exists in destination, but not accessible */ + gf_log (THIS->name, GF_LOG_WARNING, + "%s: failed to lookup file (%s)", + loc->path, strerror (errno)); + goto out; + } + + /* Create the destination with LINKFILE mode, and linkto xattr, + if the linkfile already exists, it will just open the file */ + ret = syncop_create (to, loc, O_RDWR, DHT_LINKFILE_MODE, fd, + dict, &new_stbuf); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "failed to create %s on %s (%s)", + loc->path, to->name, strerror (errno)); + goto out; + } + + ret = syncop_fsetxattr (to, fd, xattr, 0); + if (ret == -1) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to set xattr on %s (%s)", + loc->path, to->name, strerror (errno)); + + ret = syncop_ftruncate (to, fd, stbuf->ia_size); + if (ret < 0) + gf_log (this->name, GF_LOG_ERROR, + "ftruncate failed for %s on %s (%s)", + loc->path, to->name, strerror (errno)); + + ret = syncop_fsetattr (to, fd, stbuf, + (GF_SET_ATTR_UID | GF_SET_ATTR_GID), + NULL, NULL); + if (ret < 0) + gf_log (this->name, GF_LOG_ERROR, + "chown failed for %s on %s (%s)", + loc->path, to->name, strerror (errno)); + + if (dst_fd) + *dst_fd = fd; + + /* success */ + ret = 0; + +out: + return ret; +} + +static inline int +__dht_check_free_space (xlator_t *to, xlator_t *from, loc_t *loc, + struct iatt *stbuf, int flag) +{ + struct statvfs src_statfs = {0,}; + struct statvfs dst_statfs = {0,}; + int ret = -1; + xlator_t *this = NULL; + + uint64_t src_statfs_blocks = 1; + uint64_t dst_statfs_blocks = 1; + + this = THIS; + + ret = syncop_statfs (from, loc, &src_statfs); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "failed to get statfs of %s on %s (%s)", + loc->path, from->name, strerror (errno)); + goto out; + } + + ret = syncop_statfs (to, loc, &dst_statfs); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "failed to get statfs of %s on %s (%s)", + loc->path, to->name, strerror (errno)); + goto out; + } + + /* if force option is given, do not check for space @ dst. + * Check only if space is avail for the file */ + if (flag != GF_DHT_MIGRATE_DATA) + goto check_avail_space; + + /* Check: + During rebalance `migrate-data` - Destination subvol experiences + a `reduction` in 'blocks' of free space, at the same time source + subvol gains certain 'blocks' of free space. A valid check is + necessary here to avoid errorneous move to destination where + the space could be scantily available. + */ + if (stbuf) { + dst_statfs_blocks = ((dst_statfs.f_bavail * + dst_statfs.f_bsize) / + GF_DISK_SECTOR_SIZE); + src_statfs_blocks = ((src_statfs.f_bavail * + src_statfs.f_bsize) / + GF_DISK_SECTOR_SIZE); + if ((dst_statfs_blocks - stbuf->ia_blocks) < + (src_statfs_blocks + stbuf->ia_blocks)) { + gf_log (this->name, GF_LOG_WARNING, + "data movement attempted from node (%s) with" + " higher disk space to a node (%s) with " + "lesser disk space (%s)", from->name, + to->name, loc->path); + + /* this is not a 'failure', but we don't want to + consider this as 'success' too :-/ */ + ret = 1; + goto out; + } + } +check_avail_space: + if (((dst_statfs.f_bavail * dst_statfs.f_bsize) / + GF_DISK_SECTOR_SIZE) < stbuf->ia_blocks) { + gf_log (this->name, GF_LOG_ERROR, + "data movement attempted from node (%s) with " + "to node (%s) which does not have required free space" + " for %s", from->name, to->name, loc->path); + ret = 1; + goto out; + } + + ret = 0; +out: + return ret; +} + +static inline int +__dht_rebalance_migrate_data (xlator_t *from, xlator_t *to, fd_t *src, fd_t *dst, + uint64_t ia_size, int hole_exists) +{ + int ret = 0; + int count = 0; + off_t offset = 0; + struct iovec *vector = NULL; + struct iobref *iobref = NULL; + uint64_t total = 0; + size_t read_size = 0; + + /* if file size is '0', no need to enter this loop */ + while (total < ia_size) { + read_size = (((ia_size - total) > DHT_REBALANCE_BLKSIZE) ? + DHT_REBALANCE_BLKSIZE : (ia_size - total)); + ret = syncop_readv (from, src, read_size, + offset, 0, &vector, &count, &iobref); + if (!ret || (ret < 0)) { + break; + } + + if (hole_exists) + ret = dht_write_with_holes (to, dst, vector, count, + ret, offset, iobref); + else + ret = syncop_writev (to, dst, vector, count, + offset, iobref, 0); + if (ret < 0) { + break; + } + offset += ret; + total += ret; + + GF_FREE (vector); + if (iobref) + iobref_unref (iobref); + iobref = NULL; + vector = NULL; + } + if (iobref) + iobref_unref (iobref); + GF_FREE (vector); + + if (ret >= 0) + ret = 0; + + return ret; +} + + +static inline int +__dht_rebalance_open_src_file (xlator_t *from, xlator_t *to, loc_t *loc, + struct iatt *stbuf, fd_t **src_fd) +{ + int ret = 0; + fd_t *fd = NULL; + dict_t *dict = NULL; + xlator_t *this = NULL; + struct iatt iatt = {0,}; + dht_conf_t *conf = NULL; + + this = THIS; + conf = this->private; + + fd = fd_create (loc->inode, DHT_REBALANCE_PID); + if (!fd) { + gf_log (this->name, GF_LOG_ERROR, + "%s: fd create failed (source)", loc->path); + ret = -1; + goto out; + } + + ret = syncop_open (from, loc, O_RDWR, fd); + if (ret == -1) { + gf_log (this->name, GF_LOG_ERROR, + "failed to open file %s on %s (%s)", + loc->path, from->name, strerror (errno)); + goto out; + } + + ret = -1; + dict = dict_new (); + if (!dict) + goto out; + + ret = dict_set_str (dict, conf->link_xattr_name, to->name); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "failed to set xattr in dict for %s (linkto:%s)", + loc->path, to->name); + goto out; + } + + /* Once the migration starts, the source should have 'linkto' key set + to show which is the target, so other clients can work around it */ + ret = syncop_setxattr (from, loc, dict, 0); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "failed to set xattr on %s in %s (%s)", + loc->path, from->name, strerror (errno)); + goto out; + } + + /* mode should be (+S+T) to indicate migration is in progress */ + iatt.ia_prot = stbuf->ia_prot; + iatt.ia_type = stbuf->ia_type; + iatt.ia_prot.sticky = 1; + iatt.ia_prot.sgid = 1; + + ret = syncop_setattr (from, loc, &iatt, GF_SET_ATTR_MODE, NULL, NULL); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "failed to set mode on %s in %s (%s)", + loc->path, from->name, strerror (errno)); + goto out; + } + + if (src_fd) + *src_fd = fd; + + /* success */ + ret = 0; +out: + if (dict) + dict_unref (dict); + + return ret; +} + +int +migrate_special_files (xlator_t *this, xlator_t *from, xlator_t *to, loc_t *loc, + struct iatt *buf) +{ + int ret = -1; + dict_t *rsp_dict = NULL; + dict_t *dict = NULL; + char *link = NULL; + struct iatt stbuf = {0,}; + dht_conf_t *conf = this->private; + + dict = dict_new (); + if (!dict) + goto out; + + ret = dict_set_int32 (dict, conf->link_xattr_name, 256); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to set 'linkto' key in dict", loc->path); + goto out; + } + + /* check in the destination if the file is link file */ + ret = syncop_lookup (to, loc, dict, &stbuf, &rsp_dict, NULL); + if ((ret == -1) && (errno != ENOENT)) { + gf_log (this->name, GF_LOG_WARNING, "%s: lookup failed (%s)", + loc->path, strerror (errno)); + goto out; + } + + /* we no more require this key */ + dict_del (dict, conf->link_xattr_name); + + /* file exists in target node, only if it is 'linkfile' its valid, + otherwise, error out */ + if (!ret) { + if (!check_is_linkfile (loc->inode, &stbuf, rsp_dict, + conf->link_xattr_name)) { + gf_log (this->name, GF_LOG_WARNING, + "%s: file exists in destination", loc->path); + ret = -1; + goto out; + } + + /* as file is linkfile, delete it */ + ret = syncop_unlink (to, loc); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to delete the linkfile (%s)", + loc->path, strerror (errno)); + goto out; + } + } + + /* Set the gfid of the source file in dict */ + ret = dict_set_static_bin (dict, "gfid-req", buf->ia_gfid, 16); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to set gfid in dict for create", loc->path); + goto out; + } + + /* Create the file in target */ + if (IA_ISLNK (buf->ia_type)) { + /* Handle symlinks separately */ + ret = syncop_readlink (from, loc, &link, buf->ia_size); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "%s: readlink on symlink failed (%s)", + loc->path, strerror (errno)); + goto out; + } + + ret = syncop_symlink (to, loc, link, dict, 0); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "%s: creating symlink failed (%s)", + loc->path, strerror (errno)); + goto out; + } + + goto done; + } + + ret = syncop_mknod (to, loc, st_mode_from_ia (buf->ia_prot, + buf->ia_type), + makedev (ia_major (buf->ia_rdev), + ia_minor (buf->ia_rdev)), dict, 0); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, "%s: mknod failed (%s)", + loc->path, strerror (errno)); + goto out; + } + +done: + ret = syncop_setattr (to, loc, buf, + (GF_SET_ATTR_UID | GF_SET_ATTR_GID | + GF_SET_ATTR_MODE), NULL, NULL); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to perform setattr on %s (%s)", + loc->path, to->name, strerror (errno)); + } + + ret = syncop_unlink (from, loc); + if (ret) + gf_log (this->name, GF_LOG_WARNING, "%s: unlink failed (%s)", + loc->path, strerror (errno)); + +out: + if (dict) + dict_unref (dict); + + if (rsp_dict) + dict_unref (rsp_dict); + + return ret; +} + +/* + return values: + + -1 : failure + 0 : successfully migrated data + 1 : not a failure, but we can't migrate data as of now +*/ +int +dht_migrate_file (xlator_t *this, loc_t *loc, xlator_t *from, xlator_t *to, + int flag) +{ + int ret = -1; + struct iatt new_stbuf = {0,}; + struct iatt stbuf = {0,}; + struct iatt empty_iatt = {0,}; + ia_prot_t src_ia_prot = {0,}; + fd_t *src_fd = NULL; + fd_t *dst_fd = NULL; + dict_t *dict = NULL; + dict_t *xattr = NULL; + dict_t *xattr_rsp = NULL; + int file_has_holes = 0; + dht_conf_t *conf = this->private; + + gf_log (this->name, GF_LOG_INFO, "%s: attempting to move from %s to %s", + loc->path, from->name, to->name); + + dict = dict_new (); + if (!dict) + goto out; + + ret = dict_set_int32 (dict, conf->link_xattr_name, 256); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to set 'linkto' key in dict", loc->path); + goto out; + } + + /* Phase 1 - Data migration is in progress from now on */ + ret = syncop_lookup (from, loc, dict, &stbuf, &xattr_rsp, NULL); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "%s: lookup failed on %s (%s)", + loc->path, from->name, strerror (errno)); + goto out; + } + + /* we no more require this key */ + dict_del (dict, conf->link_xattr_name); + + /* preserve source mode, so set the same to the destination */ + src_ia_prot = stbuf.ia_prot; + + /* Check if file can be migrated */ + ret = __is_file_migratable (this, loc, &stbuf, xattr_rsp, flag); + if (ret) + goto out; + + /* Take care of the special files */ + if (!IA_ISREG (stbuf.ia_type)) { + /* Special files */ + ret = migrate_special_files (this, from, to, loc, &stbuf); + goto out; + } + + /* TODO: move all xattr related operations to fd based operations */ + ret = syncop_listxattr (from, loc, &xattr); + if (ret == -1) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to get xattr from %s (%s)", + loc->path, from->name, strerror (errno)); + + /* create the destination, with required modes/xattr */ + ret = __dht_rebalance_create_dst_file (to, from, loc, &stbuf, + dict, &dst_fd, xattr); + if (ret) + goto out; + + ret = __dht_check_free_space (to, from, loc, &stbuf, flag); + if (ret) { + goto out; + } + + /* Open the source, and also update mode/xattr */ + ret = __dht_rebalance_open_src_file (from, to, loc, &stbuf, &src_fd); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "failed to open %s on %s", + loc->path, from->name); + goto out; + } + + + ret = syncop_fstat (from, src_fd, &stbuf); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "failed to lookup %s on %s (%s)", + loc->path, from->name, strerror (errno)); + goto out; + } + + /* Try to preserve 'holes' while migrating data */ + if (stbuf.ia_size > (stbuf.ia_blocks * GF_DISK_SECTOR_SIZE)) + file_has_holes = 1; + + /* All I/O happens in this function */ + ret = __dht_rebalance_migrate_data (from, to, src_fd, dst_fd, + stbuf.ia_size, file_has_holes); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "%s: failed to migrate data", + loc->path); + /* reset the destination back to 0 */ + ret = syncop_ftruncate (to, dst_fd, 0); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "%s: failed to reset target size back to 0 (%s)", + loc->path, strerror (errno)); + } + + ret = -1; + goto out; + } + + /* TODO: Sync the locks */ + + ret = syncop_fsync (to, dst_fd, 0); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to fsync on %s (%s)", + loc->path, to->name, strerror (errno)); + + + /* Phase 2 - Data-Migration Complete, Housekeeping updates pending */ + + ret = syncop_fstat (from, src_fd, &new_stbuf); + if (ret < 0) { + /* Failed to get the stat info */ + gf_log (this->name, GF_LOG_ERROR, + "failed to fstat file %s on %s (%s)", + loc->path, from->name, strerror (errno)); + goto out; + } + + /* source would have both sticky bit and sgid bit set, reset it to 0, + and set the source permission on destination, if it was not set + prior to setting rebalance-modes in source */ + if (!src_ia_prot.sticky) + new_stbuf.ia_prot.sticky = 0; + + if (!src_ia_prot.sgid) + new_stbuf.ia_prot.sgid = 0; + + /* TODO: if the source actually had sticky bit, or sgid bit set, + we are not handling it */ + + ret = syncop_fsetattr (to, dst_fd, &new_stbuf, + (GF_SET_ATTR_UID | GF_SET_ATTR_GID | + GF_SET_ATTR_MODE), NULL, NULL); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to perform setattr on %s (%s)", + loc->path, to->name, strerror (errno)); + goto out; + } + + /* Because 'futimes' is not portable */ + ret = syncop_setattr (to, loc, &new_stbuf, + (GF_SET_ATTR_MTIME | GF_SET_ATTR_ATIME), + NULL, NULL); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to perform setattr on %s (%s)", + loc->path, to->name, strerror (errno)); + } + + /* Make the source as a linkfile first before deleting it */ + empty_iatt.ia_prot.sticky = 1; + ret = syncop_fsetattr (from, src_fd, &empty_iatt, + GF_SET_ATTR_MODE, NULL, NULL); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, \ + "%s: failed to perform setattr on %s (%s)", + loc->path, from->name, strerror (errno)); + goto out; + } + + /* Free up the data blocks on the source node, as the whole + file is migrated */ + ret = syncop_ftruncate (from, src_fd, 0); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to perform truncate on %s (%s)", + loc->path, from->name, strerror (errno)); + } + + /* remove the 'linkto' xattr from the destination */ + ret = syncop_fremovexattr (to, dst_fd, conf->link_xattr_name); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to perform removexattr on %s (%s)", + loc->path, to->name, strerror (errno)); + } + + /* Do a stat and check the gfid before unlink */ + ret = syncop_stat (from, loc, &empty_iatt); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to do a stat on %s (%s)", + loc->path, from->name, strerror (errno)); + goto out; + } + + if (uuid_compare (empty_iatt.ia_gfid, loc->gfid) == 0) { + /* take out the source from namespace */ + ret = syncop_unlink (from, loc); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to perform unlink on %s (%s)", + loc->path, from->name, strerror (errno)); + goto out; + } + } + + ret = syncop_lookup (this, loc, NULL, NULL, NULL, NULL); + if (ret) { + gf_log (this->name, GF_LOG_DEBUG, + "%s: failed to lookup the file on subvolumes (%s)", + loc->path, strerror (errno)); + } + + gf_log (this->name, GF_LOG_INFO, + "completed migration of %s from subvolume %s to %s", + loc->path, from->name, to->name); + + ret = 0; +out: + if (dict) + dict_unref (dict); + + if (xattr) + dict_unref (xattr); + if (xattr_rsp) + dict_unref (xattr_rsp); + + if (dst_fd) + syncop_close (dst_fd); + if (src_fd) + syncop_close (src_fd); + + return ret; +} + +static int +rebalance_task (void *data) +{ + int ret = -1; + dht_local_t *local = NULL; + call_frame_t *frame = NULL; + + frame = data; + + local = frame->local; + + /* This function is 'synchrounous', hence if it returns, + we are done with the task */ + ret = dht_migrate_file (THIS, &local->loc, local->rebalance.from_subvol, + local->rebalance.target_node, local->flags); + + return ret; +} + +static int +rebalance_task_completion (int op_ret, call_frame_t *sync_frame, void *data) +{ + int ret = -1; + uint64_t layout_int = 0; + dht_layout_t *layout = 0; + xlator_t *this = NULL; + dht_local_t *local = NULL; + int32_t op_errno = EINVAL; + + this = THIS; + local = sync_frame->local; + + if (!op_ret) { + /* Make sure we have valid 'layout' in inode ctx + after the operation */ + ret = inode_ctx_del (local->loc.inode, this, &layout_int); + if (!ret && layout_int) { + layout = (dht_layout_t *)(long)layout_int; + dht_layout_unref (this, layout); + } + + ret = dht_layout_preset (this, local->rebalance.target_node, + local->loc.inode); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to set inode ctx", local->loc.path); + } + + if (op_ret == -1) { + /* Failure of migration process, mostly due to write process. + as we can't preserve the exact errno, lets say there was + no space to migrate-data + */ + op_errno = ENOSPC; + } + + if (op_ret == 1) { + /* migration didn't happen, but is not a failure, let the user + understand that he doesn't have permission to migrate the + file. + */ + op_ret = -1; + op_errno = EPERM; + } + + DHT_STACK_UNWIND (setxattr, sync_frame, op_ret, op_errno, NULL); + return 0; +} + +int +dht_start_rebalance_task (xlator_t *this, call_frame_t *frame) +{ + int ret = -1; + + ret = synctask_new (this->ctx->env, rebalance_task, + rebalance_task_completion, + frame, frame); + return ret; +} + +int +gf_listener_stop (xlator_t *this) +{ + glusterfs_ctx_t *ctx = NULL; + cmd_args_t *cmd_args = NULL; + int ret = 0; + + ctx = this->ctx; + GF_ASSERT (ctx); + cmd_args = &ctx->cmd_args; + if (cmd_args->sock_file) { + ret = unlink (cmd_args->sock_file); + if (ret && (ENOENT == errno)) { + ret = 0; + } + } + + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to unlink listener " + "socket %s, error: %s", cmd_args->sock_file, + strerror (errno)); + } + return ret; +} + +void +dht_build_root_inode (xlator_t *this, inode_t **inode) +{ + inode_table_t *itable = NULL; + uuid_t root_gfid = {0, }; + + itable = inode_table_new (0, this); + if (!itable) + return; + + root_gfid[15] = 1; + *inode = inode_find (itable, root_gfid); +} + +void +dht_build_root_loc (inode_t *inode, loc_t *loc) +{ + loc->path = "/"; + loc->inode = inode; + loc->inode->ia_type = IA_IFDIR; + memset (loc->gfid, 0, 16); + loc->gfid[15] = 1; +} + + +/* return values: 1 -> error, bug ignore and continue + 0 -> proceed + -1 -> error, handle it */ +int32_t +gf_defrag_handle_migrate_error (int32_t op_errno, gf_defrag_info_t *defrag) +{ + /* if errno is not ENOSPC or ENOTCONN, we can still continue + with rebalance process */ + if ((errno != ENOSPC) || (errno != ENOTCONN)) + return 1; + + if (errno == ENOTCONN) { + /* Most probably mount point went missing (mostly due + to a brick down), say rebalance failure to user, + let him restart it if everything is fine */ + defrag->defrag_status = GF_DEFRAG_STATUS_FAILED; + return -1; + } + + if (errno == ENOSPC) { + /* rebalance process itself failed, may be + remote brick went down, or write failed due to + disk full etc etc.. */ + defrag->defrag_status = GF_DEFRAG_STATUS_FAILED; + return -1; + } + + return 0; +} + +static gf_boolean_t +gf_defrag_pattern_match (gf_defrag_info_t *defrag, char *name, uint64_t size) +{ + gf_defrag_pattern_list_t *trav = NULL; + gf_boolean_t match = _gf_false; + gf_boolean_t ret = _gf_false; + + GF_VALIDATE_OR_GOTO ("dht", defrag, out); + + trav = defrag->defrag_pattern; + while (trav) { + if (!fnmatch (trav->path_pattern, name, FNM_NOESCAPE)) { + match = _gf_true; + break; + } + trav = trav->next; + } + + if ((match == _gf_true) && (size >= trav->size)) + ret = _gf_true; + + out: + return ret; +} + +/* We do a depth first traversal of directories. But before we move into + * subdirs, we complete the data migration of those directories whose layouts + * have been fixed + */ + +int +gf_defrag_migrate_data (xlator_t *this, gf_defrag_info_t *defrag, loc_t *loc, + dict_t *migrate_data) +{ + int ret = -1; + loc_t entry_loc = {0,}; + fd_t *fd = NULL; + gf_dirent_t entries; + gf_dirent_t *tmp = NULL; + gf_dirent_t *entry = NULL; + gf_boolean_t free_entries = _gf_false; + off_t offset = 0; + dict_t *dict = NULL; + struct iatt iatt = {0,}; + int32_t op_errno = 0; + char *uuid_str = NULL; + uuid_t node_uuid = {0,}; + int readdir_operrno = 0; + struct timeval dir_start = {0,}; + struct timeval end = {0,}; + double elapsed = {0,}; + struct timeval start = {0,}; + int32_t err = 0; + + gf_log (this->name, GF_LOG_INFO, "migrate data called on %s", + loc->path); + gettimeofday (&dir_start, NULL); + + fd = fd_create (loc->inode, defrag->pid); + if (!fd) { + gf_log (this->name, GF_LOG_ERROR, "Failed to create fd"); + goto out; + } + + ret = syncop_opendir (this, loc, fd); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to open dir %s", + loc->path); + goto out; + } + + INIT_LIST_HEAD (&entries.list); + + while ((ret = syncop_readdirp (this, fd, 131072, offset, NULL, + &entries)) != 0) { + + if (ret < 0) { + + gf_log (this->name, GF_LOG_ERROR, "Readdir returned %s." + " Aborting migrate-data", + strerror(readdir_operrno)); + goto out; + } + + /* Need to keep track of ENOENT errno, that means, there is no + need to send more readdirp() */ + readdir_operrno = errno; + + if (list_empty (&entries.list)) + break; + + free_entries = _gf_true; + + list_for_each_entry_safe (entry, tmp, &entries.list, list) { + if (defrag->defrag_status != GF_DEFRAG_STATUS_STARTED) { + ret = 1; + goto out; + } + + offset = entry->d_off; + + if (!strcmp (entry->d_name, ".") || + !strcmp (entry->d_name, "..")) + continue; + + if (IA_ISDIR (entry->d_stat.ia_type)) + continue; + + defrag->num_files_lookedup++; + if (defrag->stats == _gf_true) { + gettimeofday (&start, NULL); + } + if (defrag->defrag_pattern && + (gf_defrag_pattern_match (defrag, entry->d_name, + entry->d_stat.ia_size) + == _gf_false)) { + continue; + } + loc_wipe (&entry_loc); + ret =dht_build_child_loc (this, &entry_loc, loc, + entry->d_name); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Child loc" + " build failed"); + goto out; + } + + if (uuid_is_null (entry->d_stat.ia_gfid)) { + gf_log (this->name, GF_LOG_ERROR, "%s/%s" + " gfid not present", loc->path, + entry->d_name); + continue; + } + + uuid_copy (entry_loc.gfid, entry->d_stat.ia_gfid); + + if (uuid_is_null (loc->gfid)) { + gf_log (this->name, GF_LOG_ERROR, "%s/%s" + " gfid not present", loc->path, + entry->d_name); + continue; + } + + uuid_copy (entry_loc.pargfid, loc->gfid); + + entry_loc.inode->ia_type = entry->d_stat.ia_type; + + ret = syncop_lookup (this, &entry_loc, NULL, &iatt, + NULL, NULL); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "%s" + " lookup failed", entry_loc.path); + continue; + } + + ret = syncop_getxattr (this, &entry_loc, &dict, + GF_XATTR_NODE_UUID_KEY); + if(ret < 0) { + gf_log (this->name, GF_LOG_ERROR, "Failed to " + "get node-uuid for %s", entry_loc.path); + continue; + } + + ret = dict_get_str (dict, GF_XATTR_NODE_UUID_KEY, + &uuid_str); + if(ret < 0) { + gf_log (this->name, GF_LOG_ERROR, "Failed to " + "get node-uuid from dict for %s", + entry_loc.path); + continue; + } + + if (uuid_parse (uuid_str, node_uuid)) { + gf_log (this->name, GF_LOG_ERROR, "uuid_parse " + "failed for %s", entry_loc.path); + continue; + } + + /* if file belongs to different node, skip migration + * the other node will take responsibility of migration + */ + if (uuid_compare (node_uuid, defrag->node_uuid)) { + gf_log (this->name, GF_LOG_TRACE, "%s does not" + "belong to this node", entry_loc.path); + continue; + } + + uuid_str = NULL; + + dict_del (dict, GF_XATTR_NODE_UUID_KEY); + + + /* if distribute is present, it will honor this key. + * -1 is returned if distribute is not present or file + * doesn't have a link-file. If file has link-file, the + * path of link-file will be the value, and also that + * guarantees that file has to be mostly migrated */ + + ret = syncop_getxattr (this, &entry_loc, &dict, + GF_XATTR_LINKINFO_KEY); + if (ret < 0) { + gf_log (this->name, GF_LOG_TRACE, "failed to " + "get link-to key for %s", + entry_loc.path); + continue; + } + + ret = syncop_setxattr (this, &entry_loc, migrate_data, + 0); + if (ret) { + err = op_errno; + /* errno is overloaded. See + * rebalance_task_completion () */ + if (err != ENOSPC) { + gf_log (this->name, GF_LOG_DEBUG, + "migrate-data skipped for %s" + " due to space constraints", + entry_loc.path); + defrag->skipped +=1; + } else{ + gf_log (this->name, GF_LOG_ERROR, + "migrate-data failed for %s", + entry_loc.path); + defrag->total_failures +=1; + } + } + + if (ret == -1) { + op_errno = errno; + ret = gf_defrag_handle_migrate_error (op_errno, + defrag); + + if (!ret) + gf_log (this->name, GF_LOG_DEBUG, + "migrate-data on %s failed: %s", + entry_loc.path, + strerror (op_errno)); + else if (ret == 1) + continue; + else if (ret == -1) + goto out; + } + + LOCK (&defrag->lock); + { + defrag->total_files += 1; + defrag->total_data += iatt.ia_size; + } + UNLOCK (&defrag->lock); + if (defrag->stats == _gf_true) { + gettimeofday (&end, NULL); + elapsed = (end.tv_sec - start.tv_sec) * 1e6 + + (end.tv_usec - start.tv_usec); + gf_log (this->name, GF_LOG_INFO, "Migration of " + "file:%s size:%"PRIu64" bytes took %.2f" + "secs", entry_loc.path, iatt.ia_size, + elapsed/1e6); + } + } + + gf_dirent_free (&entries); + free_entries = _gf_false; + INIT_LIST_HEAD (&entries.list); + + if (readdir_operrno == ENOENT) + break; + } + + gettimeofday (&end, NULL); + elapsed = (end.tv_sec - dir_start.tv_sec) * 1e6 + + (end.tv_usec - dir_start.tv_usec); + gf_log (this->name, GF_LOG_INFO, "Migration operation on dir %s took " + "%.2f secs", loc->path, elapsed/1e6); + ret = 0; +out: + if (free_entries) + gf_dirent_free (&entries); + + loc_wipe (&entry_loc); + + if (dict) + dict_unref(dict); + + if (fd) + fd_unref (fd); + return ret; + +} + + +int +gf_defrag_fix_layout (xlator_t *this, gf_defrag_info_t *defrag, loc_t *loc, + dict_t *fix_layout, dict_t *migrate_data) +{ + int ret = -1; + loc_t entry_loc = {0,}; + fd_t *fd = NULL; + gf_dirent_t entries; + gf_dirent_t *tmp = NULL; + gf_dirent_t *entry = NULL; + gf_boolean_t free_entries = _gf_false; + dict_t *dict = NULL; + off_t offset = 0; + struct iatt iatt = {0,}; + int readdirp_errno = 0; + + ret = syncop_lookup (this, loc, NULL, &iatt, NULL, NULL); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Lookup failed on %s", + loc->path); + goto out; + } + + if (defrag->cmd != GF_DEFRAG_CMD_START_LAYOUT_FIX) { + ret = gf_defrag_migrate_data (this, defrag, loc, migrate_data); + if (ret) + goto out; + } + + gf_log (this->name, GF_LOG_TRACE, "fix layout called on %s", loc->path); + + fd = fd_create (loc->inode, defrag->pid); + if (!fd) { + gf_log (this->name, GF_LOG_ERROR, "Failed to create fd"); + ret = -1; + goto out; + } + + ret = syncop_opendir (this, loc, fd); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to open dir %s", + loc->path); + ret = -1; + goto out; + } + + INIT_LIST_HEAD (&entries.list); + while ((ret = syncop_readdirp (this, fd, 131072, offset, NULL, + &entries)) != 0) + { + + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, "Readdir returned %s" + ". Aborting fix-layout",strerror(errno)); + goto out; + } + + /* Need to keep track of ENOENT errno, that means, there is no + need to send more readdirp() */ + readdirp_errno = errno; + + if (list_empty (&entries.list)) + break; + + free_entries = _gf_true; + + list_for_each_entry_safe (entry, tmp, &entries.list, list) { + if (defrag->defrag_status != GF_DEFRAG_STATUS_STARTED) { + ret = 1; + goto out; + } + + offset = entry->d_off; + + if (!strcmp (entry->d_name, ".") || + !strcmp (entry->d_name, "..")) + continue; + + if (!IA_ISDIR (entry->d_stat.ia_type)) + continue; + + loc_wipe (&entry_loc); + ret =dht_build_child_loc (this, &entry_loc, loc, + entry->d_name); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Child loc" + " build failed"); + goto out; + } + + if (uuid_is_null (entry->d_stat.ia_gfid)) { + gf_log (this->name, GF_LOG_ERROR, "%s/%s" + " gfid not present", loc->path, + entry->d_name); + continue; + } + + entry_loc.inode->ia_type = entry->d_stat.ia_type; + + uuid_copy (entry_loc.gfid, entry->d_stat.ia_gfid); + if (uuid_is_null (loc->gfid)) { + gf_log (this->name, GF_LOG_ERROR, "%s/%s" + " gfid not present", loc->path, + entry->d_name); + continue; + } + + uuid_copy (entry_loc.pargfid, loc->gfid); + + ret = syncop_lookup (this, &entry_loc, NULL, &iatt, + NULL, NULL); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "%s" + " lookup failed", entry_loc.path); + continue; + } + + ret = syncop_setxattr (this, &entry_loc, fix_layout, + 0); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Setxattr " + "failed for %s", entry_loc.path); + defrag->defrag_status = + GF_DEFRAG_STATUS_FAILED; + defrag->total_failures ++; + goto out; + } + ret = gf_defrag_fix_layout (this, defrag, &entry_loc, + fix_layout, migrate_data); + + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Fix layout " + "failed for %s", entry_loc.path); + defrag->total_failures++; + goto out; + } + + } + gf_dirent_free (&entries); + free_entries = _gf_false; + INIT_LIST_HEAD (&entries.list); + if (readdirp_errno == ENOENT) + break; + } + + ret = 0; +out: + if (free_entries) + gf_dirent_free (&entries); + + loc_wipe (&entry_loc); + + if (dict) + dict_unref(dict); + + if (fd) + fd_unref (fd); + + return ret; + +} + + +int +gf_defrag_start_crawl (void *data) +{ + xlator_t *this = NULL; + dht_conf_t *conf = NULL; + gf_defrag_info_t *defrag = NULL; + int ret = -1; + loc_t loc = {0,}; + struct iatt iatt = {0,}; + struct iatt parent = {0,}; + dict_t *fix_layout = NULL; + dict_t *migrate_data = NULL; + dict_t *status = NULL; + glusterfs_ctx_t *ctx = NULL; + + this = data; + if (!this) + goto out; + + ctx = this->ctx; + if (!ctx) + goto out; + + conf = this->private; + if (!conf) + goto out; + + defrag = conf->defrag; + if (!defrag) + goto out; + + gettimeofday (&defrag->start_time, NULL); + dht_build_root_inode (this, &defrag->root_inode); + if (!defrag->root_inode) + goto out; + + dht_build_root_loc (defrag->root_inode, &loc); + + /* fix-layout on '/' first */ + + ret = syncop_lookup (this, &loc, NULL, &iatt, NULL, &parent); + + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "look up on / failed"); + goto out; + } + + fix_layout = dict_new (); + if (!fix_layout) { + ret = -1; + goto out; + } + + ret = dict_set_str (fix_layout, GF_XATTR_FIX_LAYOUT_KEY, "yes"); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to set dict str"); + goto out; + } + + ret = syncop_setxattr (this, &loc, fix_layout, 0); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "fix layout on %s failed", + loc.path); + defrag->total_failures++; + goto out; + } + + if (defrag->cmd != GF_DEFRAG_CMD_START_LAYOUT_FIX) { + migrate_data = dict_new (); + if (!migrate_data) { + ret = -1; + goto out; + } + if (defrag->cmd == GF_DEFRAG_CMD_START_FORCE) + ret = dict_set_str (migrate_data, + "distribute.migrate-data", "force"); + else + ret = dict_set_str (migrate_data, + "distribute.migrate-data", + "non-force"); + if (ret) + goto out; + } + ret = gf_defrag_fix_layout (this, defrag, &loc, fix_layout, + migrate_data); + if ((defrag->defrag_status != GF_DEFRAG_STATUS_STOPPED) && + (defrag->defrag_status != GF_DEFRAG_STATUS_FAILED)) { + defrag->defrag_status = GF_DEFRAG_STATUS_COMPLETE; + } + + + +out: + LOCK (&defrag->lock); + { + status = dict_new (); + gf_defrag_status_get (defrag, status); + if (ctx->notify) + ctx->notify (GF_EN_DEFRAG_STATUS, status); + if (status) + dict_unref (status); + defrag->is_exiting = 1; + } + UNLOCK (&defrag->lock); + + if (defrag) { + GF_FREE (defrag); + conf->defrag = NULL; + } + + return ret; +} + + +static int +gf_defrag_done (int ret, call_frame_t *sync_frame, void *data) +{ + gf_listener_stop (sync_frame->this); + + STACK_DESTROY (sync_frame->root); + kill (getpid(), SIGTERM); + return 0; +} + +void * +gf_defrag_start (void *data) +{ + int ret = -1; + call_frame_t *frame = NULL; + dht_conf_t *conf = NULL; + gf_defrag_info_t *defrag = NULL; + xlator_t *this = NULL; + + this = data; + conf = this->private; + if (!conf) + goto out; + + defrag = conf->defrag; + if (!defrag) + goto out; + + frame = create_frame (this, this->ctx->pool); + if (!frame) + goto out; + + frame->root->pid = GF_CLIENT_PID_DEFRAG; + + defrag->pid = frame->root->pid; + + defrag->defrag_status = GF_DEFRAG_STATUS_STARTED; + + ret = synctask_new (this->ctx->env, gf_defrag_start_crawl, + gf_defrag_done, frame, this); + + if (ret) + gf_log (this->name, GF_LOG_ERROR, "Could not create" + " task for rebalance"); +out: + return NULL; +} + +int +gf_defrag_status_get (gf_defrag_info_t *defrag, dict_t *dict) +{ + int ret = 0; + uint64_t files = 0; + uint64_t size = 0; + uint64_t lookup = 0; + uint64_t failures = 0; + uint64_t skipped = 0; + char *status = ""; + double elapsed = 0; + struct timeval end = {0,}; + + + if (!defrag) + goto out; + + ret = 0; + if (defrag->defrag_status == GF_DEFRAG_STATUS_NOT_STARTED) + goto out; + + files = defrag->total_files; + size = defrag->total_data; + lookup = defrag->num_files_lookedup; + failures = defrag->total_failures; + skipped = defrag->skipped; + + gettimeofday (&end, NULL); + + elapsed = end.tv_sec - defrag->start_time.tv_sec; + + if (!dict) + goto log; + + ret = dict_set_uint64 (dict, "files", files); + if (ret) + gf_log (THIS->name, GF_LOG_WARNING, + "failed to set file count"); + + ret = dict_set_uint64 (dict, "size", size); + if (ret) + gf_log (THIS->name, GF_LOG_WARNING, + "failed to set size of xfer"); + + ret = dict_set_uint64 (dict, "lookups", lookup); + if (ret) + gf_log (THIS->name, GF_LOG_WARNING, + "failed to set lookedup file count"); + + + ret = dict_set_int32 (dict, "status", defrag->defrag_status); + if (ret) + gf_log (THIS->name, GF_LOG_WARNING, + "failed to set status"); + if (elapsed) { + ret = dict_set_double (dict, "run-time", elapsed); + if (ret) + gf_log (THIS->name, GF_LOG_WARNING, + "failed to set run-time"); + } + + ret = dict_set_uint64 (dict, "failures", failures); + if (ret) + gf_log (THIS->name, GF_LOG_WARNING, + "failed to set failure count"); + + ret = dict_set_uint64 (dict, "skipped", skipped); + if (ret) + gf_log (THIS->name, GF_LOG_WARNING, + "failed to set skipped file count"); +log: + switch (defrag->defrag_status) { + case GF_DEFRAG_STATUS_NOT_STARTED: + status = "not started"; + break; + case GF_DEFRAG_STATUS_STARTED: + status = "in progress"; + break; + case GF_DEFRAG_STATUS_STOPPED: + status = "stopped"; + break; + case GF_DEFRAG_STATUS_COMPLETE: + status = "completed"; + break; + case GF_DEFRAG_STATUS_FAILED: + status = "failed"; + break; + default: + break; + } + + gf_log (THIS->name, GF_LOG_INFO, "Rebalance is %s. Time taken is %.2f " + "secs", status, elapsed); + gf_log (THIS->name, GF_LOG_INFO, "Files migrated: %"PRIu64", size: %" + PRIu64", lookups: %"PRIu64", failures: %"PRIu64", skipped: " + "%"PRIu64, files, size, lookup, failures, skipped); + + +out: + return 0; +} + +int +gf_defrag_stop (gf_defrag_info_t *defrag, dict_t *output) +{ + /* TODO: set a variable 'stop_defrag' here, it should be checked + in defrag loop */ + int ret = -1; + GF_ASSERT (defrag); + + if (defrag->defrag_status == GF_DEFRAG_STATUS_NOT_STARTED) { + goto out; + } + + gf_log ("", GF_LOG_INFO, "Received stop command on rebalance"); + defrag->defrag_status = GF_DEFRAG_STATUS_STOPPED; + + if (output) + gf_defrag_status_get (defrag, output); + ret = 0; +out: + gf_log ("", GF_LOG_DEBUG, "Returning %d", ret); + return ret; +} diff --git a/xlators/cluster/dht/src/dht-rename.c b/xlators/cluster/dht/src/dht-rename.c index 6c34dabad..5d6f4f232 100644 --- a/xlators/cluster/dht/src/dht-rename.c +++ b/xlators/cluster/dht/src/dht-rename.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ /* TODO: link(oldpath, newpath) fails if newpath already exists. DHT should @@ -33,373 +24,735 @@ int dht_rename_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *stbuf) + int32_t op_ret, int32_t op_errno, struct iatt *stbuf, + struct iatt *preoldparent, struct iatt *postoldparent, + struct iatt *prenewparent, struct iatt *postnewparent, + dict_t *xdata) { - dht_local_t *local = NULL; - int this_call_cnt = 0; - call_frame_t *prev = NULL; + dht_local_t *local = NULL; + int this_call_cnt = 0; + call_frame_t *prev = NULL; + + local = frame->local; + prev = cookie; + + if (op_ret == -1) { + /* TODO: undo the damage */ + + gf_log (this->name, GF_LOG_INFO, + "rename %s -> %s on %s failed (%s)", + local->loc.path, local->loc2.path, + prev->this->name, strerror (op_errno)); + + local->op_ret = op_ret; + local->op_errno = op_errno; + goto unwind; + } + /* TODO: construct proper stbuf for dir */ + /* + * FIXME: is this the correct way to build stbuf and + * parent bufs? + */ + dht_iatt_merge (this, &local->stbuf, stbuf, prev->this); + dht_iatt_merge (this, &local->preoldparent, preoldparent, + prev->this); + dht_iatt_merge (this, &local->postoldparent, postoldparent, + prev->this); + dht_iatt_merge (this, &local->preparent, prenewparent, + prev->this); + dht_iatt_merge (this, &local->postparent, postnewparent, + prev->this); - local = frame->local; - prev = cookie; - - if (op_ret == -1) { - /* TODO: undo the damage */ - - gf_log (this->name, GF_LOG_DEBUG, - "rename %s -> %s on %s failed (%s)", - local->loc.path, local->loc2.path, - prev->this->name, strerror (op_errno)); - - local->op_ret = op_ret; - local->op_errno = op_errno; - } else { - /* TODO: construct proper stbuf for dir */ - local->stbuf = *stbuf; - } +unwind: + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + WIPE (&local->preoldparent); + WIPE (&local->postoldparent); + WIPE (&local->preparent); + WIPE (&local->postparent); + + DHT_STRIP_PHASE1_FLAGS (&local->stbuf); + DHT_STACK_UNWIND (rename, frame, local->op_ret, local->op_errno, + &local->stbuf, &local->preoldparent, + &local->postoldparent, + &local->preparent, &local->postparent, xdata); + } + + return 0; +} - this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) { - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf); - } - return 0; +int +dht_rename_hashed_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *stbuf, + struct iatt *preoldparent, + struct iatt *postoldparent, + struct iatt *prenewparent, + struct iatt *postnewparent, dict_t *xdata) +{ + dht_conf_t *conf = NULL; + dht_local_t *local = NULL; + int call_cnt = 0; + call_frame_t *prev = NULL; + int i = 0; + + conf = this->private; + local = frame->local; + prev = cookie; + + if (op_ret == -1) { + /* TODO: undo the damage */ + + gf_log (this->name, GF_LOG_INFO, + "rename %s -> %s on %s failed (%s)", + local->loc.path, local->loc2.path, + prev->this->name, strerror (op_errno)); + + local->op_ret = op_ret; + local->op_errno = op_errno; + goto unwind; + } + /* TODO: construct proper stbuf for dir */ + /* + * FIXME: is this the correct way to build stbuf and + * parent bufs? + */ + dht_iatt_merge (this, &local->stbuf, stbuf, prev->this); + dht_iatt_merge (this, &local->preoldparent, preoldparent, + prev->this); + dht_iatt_merge (this, &local->postoldparent, postoldparent, + prev->this); + dht_iatt_merge (this, &local->preparent, prenewparent, + prev->this); + dht_iatt_merge (this, &local->postparent, postnewparent, + prev->this); + + call_cnt = local->call_cnt = conf->subvolume_cnt - 1; + + if (!local->call_cnt) + goto unwind; + + for (i = 0; i < conf->subvolume_cnt; i++) { + if (conf->subvolumes[i] == local->dst_hashed) + continue; + STACK_WIND (frame, dht_rename_dir_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->rename, + &local->loc, &local->loc2, NULL); + if (!--call_cnt) + break; + } + + + return 0; +unwind: + WIPE (&local->preoldparent); + WIPE (&local->postoldparent); + WIPE (&local->preparent); + WIPE (&local->postparent); + + DHT_STRIP_PHASE1_FLAGS (&local->stbuf); + DHT_STACK_UNWIND (rename, frame, local->op_ret, local->op_errno, + &local->stbuf, &local->preoldparent, + &local->postoldparent, + &local->preparent, &local->postparent, NULL); + + return 0; } - int dht_rename_dir_do (call_frame_t *frame, xlator_t *this) { - dht_local_t *local = NULL; - dht_conf_t *conf = NULL; - int i = 0; - - conf = this->private; - local = frame->local; + dht_local_t *local = NULL; - if (local->op_ret == -1) - goto err; + local = frame->local; - local->call_cnt = conf->subvolume_cnt; - local->op_ret = 0; + if (local->op_ret == -1) + goto err; - for (i = 0; i < conf->subvolume_cnt; i++) { - STACK_WIND (frame, dht_rename_dir_cbk, - conf->subvolumes[i], - conf->subvolumes[i]->fops->rename, - &local->loc, &local->loc2); - } + local->op_ret = 0; - return 0; + STACK_WIND (frame, dht_rename_hashed_dir_cbk, + local->dst_hashed, + local->dst_hashed->fops->rename, + &local->loc, &local->loc2, NULL); + return 0; err: - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno); - return 0; + DHT_STACK_UNWIND (rename, frame, local->op_ret, local->op_errno, NULL, NULL, + NULL, NULL, NULL, NULL); + return 0; } int dht_rename_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, gf_dirent_t *entries) + int op_ret, int op_errno, gf_dirent_t *entries, + dict_t *xdata) { - dht_local_t *local = NULL; - int this_call_cnt = -1; - call_frame_t *prev = NULL; + dht_local_t *local = NULL; + int this_call_cnt = -1; + call_frame_t *prev = NULL; - local = frame->local; - prev = cookie; + local = frame->local; + prev = cookie; - if (op_ret > 2) { - gf_log (this->name, GF_LOG_TRACE, - "readdir on %s for %s returned %d entries", - prev->this->name, local->loc.path, op_ret); - local->op_ret = -1; - local->op_errno = ENOTEMPTY; - } + if (op_ret > 2) { + gf_log (this->name, GF_LOG_TRACE, + "readdir on %s for %s returned %d entries", + prev->this->name, local->loc.path, op_ret); + local->op_ret = -1; + local->op_errno = ENOTEMPTY; + } - this_call_cnt = dht_frame_return (frame); + this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) { - dht_rename_dir_do (frame, this); - } + if (is_last_call (this_call_cnt)) { + dht_rename_dir_do (frame, this); + } - return 0; + return 0; } int dht_rename_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, fd_t *fd) + int op_ret, int op_errno, fd_t *fd, dict_t *xdata) { - dht_local_t *local = NULL; - int this_call_cnt = -1; - call_frame_t *prev = NULL; + dht_local_t *local = NULL; + int this_call_cnt = -1; + call_frame_t *prev = NULL; - local = frame->local; - prev = cookie; + local = frame->local; + prev = cookie; - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "opendir on %s for %s failed (%s)", - prev->this->name, local->loc.path, - strerror (op_errno)); - goto err; - } + if (op_ret == -1) { + gf_log (this->name, GF_LOG_INFO, + "opendir on %s for %s failed (%s)", + prev->this->name, local->loc.path, + strerror (op_errno)); + goto err; + } - STACK_WIND (frame, dht_rename_readdir_cbk, - prev->this, prev->this->fops->readdir, - local->fd, 4096, 0); + STACK_WIND (frame, dht_rename_readdir_cbk, + prev->this, prev->this->fops->readdir, + local->fd, 4096, 0, NULL); - return 0; + return 0; err: - this_call_cnt = dht_frame_return (frame); + this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) { - dht_rename_dir_do (frame, this); - } + if (is_last_call (this_call_cnt)) { + dht_rename_dir_do (frame, this); + } - return 0; + return 0; } int dht_rename_dir (call_frame_t *frame, xlator_t *this) { - dht_conf_t *conf = NULL; - dht_local_t *local = NULL; - int i = 0; - int op_errno = -1; + dht_conf_t *conf = NULL; + dht_local_t *local = NULL; + int i = 0; + int op_errno = -1; - conf = frame->this->private; - local = frame->local; + conf = frame->this->private; + local = frame->local; - local->call_cnt = conf->subvolume_cnt; + local->call_cnt = conf->subvolume_cnt; - local->fd = fd_create (local->loc.inode, frame->root->pid); - if (!local->fd) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } + for (i = 0; i < conf->subvolume_cnt; i++) { + if (!conf->subvolume_status[i]) { + gf_log (this->name, GF_LOG_INFO, + "one of the subvolumes down (%s)", + conf->subvolumes[i]->name); + op_errno = ENOTCONN; + goto err; + } + } - local->op_ret = 0; + local->fd = fd_create (local->loc.inode, frame->root->pid); + if (!local->fd) { + op_errno = ENOMEM; + goto err; + } - if (!local->dst_cached) { - dht_rename_dir_do (frame, this); - return 0; - } + local->op_ret = 0; - for (i = 0; i < conf->subvolume_cnt; i++) { - STACK_WIND (frame, dht_rename_opendir_cbk, - conf->subvolumes[i], - conf->subvolumes[i]->fops->opendir, - &local->loc2, local->fd); - } + if (!local->dst_cached) { + dht_rename_dir_do (frame, this); + return 0; + } - return 0; + for (i = 0; i < conf->subvolume_cnt; i++) { + STACK_WIND (frame, dht_rename_opendir_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->opendir, + &local->loc2, local->fd, NULL); + } + + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL); - return 0; + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (rename, frame, -1, op_errno, NULL, NULL, NULL, NULL, + NULL, NULL); + return 0; } +#define DHT_MARK_FOP_INTERNAL(xattr) do { \ + int tmp = -1; \ + if (!xattr) { \ + xattr = dict_new (); \ + if (!xattr) \ + break; \ + } \ + tmp = dict_set_str (xattr, GLUSTERFS_INTERNAL_FOP_KEY, "yes"); \ + if (tmp) { \ + gf_log (this->name, GF_LOG_ERROR, "Failed to set" \ + " internal dict key for %s", local->loc.path); \ + } \ + }while (0) +int +dht_rename_done (call_frame_t *frame, xlator_t *this) +{ + dht_local_t *local = NULL; + + local = frame->local; + if (local->linked == _gf_true) { + local->linked = _gf_false; + dht_linkfile_attr_heal (frame, this); + } + DHT_STRIP_PHASE1_FLAGS (&local->stbuf); + DHT_STACK_UNWIND (rename, frame, local->op_ret, local->op_errno, + &local->stbuf, &local->preoldparent, + &local->postoldparent, &local->preparent, + &local->postparent, NULL); + + return 0; +} int dht_rename_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) + int32_t op_ret, int32_t op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - dht_local_t *local = NULL; - call_frame_t *prev = NULL; - int this_call_cnt = 0; + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + int this_call_cnt = 0; + + local = frame->local; + prev = cookie; + + if (!local) { + gf_log (this->name, GF_LOG_ERROR, + "!local, should not happen"); + goto out; + } + + this_call_cnt = dht_frame_return (frame); + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "%s: unlink on %s failed (%s)", + local->loc.path, prev->this->name, strerror (op_errno)); + } + + WIPE (&local->preoldparent); + WIPE (&local->postoldparent); + WIPE (&local->preparent); + WIPE (&local->postparent); + + if (is_last_call (this_call_cnt)) { + dht_rename_done (frame, this); + } + +out: + return 0; +} - local = frame->local; - prev = cookie; - this_call_cnt = dht_frame_return (frame); +int +dht_rename_cleanup (call_frame_t *frame) +{ + dht_local_t *local = NULL; + xlator_t *this = NULL; + xlator_t *src_hashed = NULL; + xlator_t *src_cached = NULL; + xlator_t *dst_hashed = NULL; + xlator_t *dst_cached = NULL; + int call_cnt = 0; + dict_t *xattr = NULL; + + local = frame->local; + this = frame->this; + + src_hashed = local->src_hashed; + src_cached = local->src_cached; + dst_hashed = local->dst_hashed; + dst_cached = local->dst_cached; + + if (src_cached == dst_cached) + goto nolinks; + + if (dst_hashed != src_hashed && dst_hashed != src_cached) + call_cnt++; + + if (src_cached != dst_hashed) + call_cnt++; + + local->call_cnt = call_cnt; + + if (!call_cnt) + goto nolinks; + + DHT_MARK_FOP_INTERNAL (xattr); + + if (dst_hashed != src_hashed && dst_hashed != src_cached) { + gf_log (this->name, GF_LOG_TRACE, + "unlinking linkfile %s @ %s => %s", + local->loc.path, dst_hashed->name, src_cached->name); + STACK_WIND (frame, dht_rename_unlink_cbk, + dst_hashed, dst_hashed->fops->unlink, + &local->loc, 0, xattr); + } + + if (src_cached != dst_hashed) { + gf_log (this->name, GF_LOG_TRACE, + "unlinking link %s => %s (%s)", local->loc.path, + local->loc2.path, src_cached->name); + STACK_WIND (frame, dht_rename_unlink_cbk, + src_cached, src_cached->fops->unlink, + &local->loc2, 0, xattr); + } + + if (xattr) + dict_unref (xattr); + + return 0; + +nolinks: + WIPE (&local->preoldparent); + WIPE (&local->postoldparent); + WIPE (&local->preparent); + WIPE (&local->postparent); + + DHT_STRIP_PHASE1_FLAGS (&local->stbuf); + DHT_STACK_UNWIND (rename, frame, local->op_ret, local->op_errno, + &local->stbuf, &local->preoldparent, + &local->postoldparent, &local->preparent, + &local->postparent, NULL); + + return 0; +} - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "unlink on %s failed (%s)", - prev->this->name, strerror (op_errno)); - } - if (is_last_call (this_call_cnt)) - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf); +int +dht_rename_links_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) +{ + call_frame_t *prev = NULL; + dht_local_t *local = NULL; - return 0; + prev = cookie; + local = frame->local; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "link/file %s on %s failed (%s)", + local->loc.path, prev->this->name, strerror (op_errno)); + } + + if (local->linked == _gf_true) { + local->linked = _gf_false; + dht_linkfile_attr_heal (frame, this); + } + DHT_STACK_DESTROY (frame); + + return 0; } int dht_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct stat *stbuf) + int32_t op_ret, int32_t op_errno, struct iatt *stbuf, + struct iatt *preoldparent, struct iatt *postoldparent, + struct iatt *prenewparent, struct iatt *postnewparent, + dict_t *xdata) { - dht_local_t *local = NULL; - call_frame_t *prev = NULL; - xlator_t *src_hashed = NULL; - xlator_t *src_cached = NULL; - xlator_t *dst_hashed = NULL; - xlator_t *dst_cached = NULL; - xlator_t *rename_subvol = NULL; + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + xlator_t *src_hashed = NULL; + xlator_t *src_cached = NULL; + xlator_t *dst_hashed = NULL; + xlator_t *dst_cached = NULL; + xlator_t *rename_subvol = NULL; + call_frame_t *link_frame = NULL; + dht_local_t *link_local = NULL; + dict_t *xattr = NULL; + + local = frame->local; + prev = cookie; + + src_hashed = local->src_hashed; + src_cached = local->src_cached; + dst_hashed = local->dst_hashed; + dst_cached = local->dst_cached; + + if (local->linked == _gf_true) + FRAME_SU_UNDO (frame, dht_local_t); + if (op_ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "%s: rename on %s failed (%s)", local->loc.path, + prev->this->name, strerror (op_errno)); + local->op_ret = op_ret; + local->op_errno = op_errno; + goto cleanup; + } + + if ((src_cached == dst_cached) && (dst_hashed != dst_cached)) { + link_frame = copy_frame (frame); + if (!link_frame) { + goto err; + } + + /* fop value sent as maxvalue because it is not used + anywhere in this case */ + link_local = dht_local_init (link_frame, &local->loc2, NULL, + GF_FOP_MAXVALUE); + if (!link_local) { + goto err; + } + + if (link_local->loc.inode) + inode_unref (link_local->loc.inode); + link_local->loc.inode = inode_ref (local->loc.inode); + uuid_copy (link_local->gfid, local->loc.inode->gfid); + + dht_linkfile_create (link_frame, dht_rename_links_create_cbk, + this, src_cached, dst_hashed, + &link_local->loc); + } - local = frame->local; - prev = cookie; - - src_hashed = local->src_hashed; - src_cached = local->src_cached; - dst_hashed = local->dst_hashed; - dst_cached = local->dst_cached; +err: + /* Merge attrs only from src_cached. In case there of src_cached != + * dst_hashed, this ignores linkfile attrs. */ + if (prev->this == src_cached) { + dht_iatt_merge (this, &local->stbuf, stbuf, prev->this); + dht_iatt_merge (this, &local->preoldparent, preoldparent, + prev->this); + dht_iatt_merge (this, &local->postoldparent, postoldparent, + prev->this); + dht_iatt_merge (this, &local->preparent, prenewparent, + prev->this); + dht_iatt_merge (this, &local->postparent, postnewparent, + prev->this); + } + + + /* NOTE: rename_subvol is the same subvolume from which dht_rename_cbk + * is called. since rename has already happened on rename_subvol, + * unlink should not be sent for oldpath (either linkfile or cached-file) + * on rename_subvol. */ + if (src_cached == dst_cached) + rename_subvol = src_cached; + else + rename_subvol = dst_hashed; + + /* TODO: delete files in background */ + + if (src_cached != dst_hashed && src_cached != dst_cached) + local->call_cnt++; + + if (src_hashed != rename_subvol && src_hashed != src_cached) + local->call_cnt++; + + if (dst_cached && dst_cached != dst_hashed && dst_cached != src_cached) + local->call_cnt++; + + if (local->call_cnt == 0) + goto unwind; + + DHT_MARK_FOP_INTERNAL (xattr); + + if (src_cached != dst_hashed && src_cached != dst_cached) { + gf_log (this->name, GF_LOG_TRACE, + "deleting old src datafile %s @ %s", + local->loc.path, src_cached->name); + + STACK_WIND (frame, dht_rename_unlink_cbk, + src_cached, src_cached->fops->unlink, + &local->loc, 0, xattr); + } + + if (src_hashed != rename_subvol && src_hashed != src_cached) { + gf_log (this->name, GF_LOG_TRACE, + "deleting old src linkfile %s @ %s", + local->loc.path, src_hashed->name); + + STACK_WIND (frame, dht_rename_unlink_cbk, + src_hashed, src_hashed->fops->unlink, + &local->loc, 0, xattr); + } + + if (dst_cached + && (dst_cached != dst_hashed) + && (dst_cached != src_cached)) { + gf_log (this->name, GF_LOG_TRACE, + "deleting old dst datafile %s @ %s", + local->loc2.path, dst_cached->name); + + STACK_WIND (frame, dht_rename_unlink_cbk, + dst_cached, dst_cached->fops->unlink, + &local->loc2, 0, xattr); + } + if (xattr) + dict_unref (xattr); + return 0; - if (op_ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "rename on %s failed (%s)", prev->this->name, - strerror (op_errno)); - local->op_ret = op_ret; - local->op_errno = op_errno; - goto unwind; - } - - /* NOTE: rename_subvol is the same subvolume from which dht_rename_cbk - * is called. since rename has already happened on rename_subvol, - * unlink should not be sent for oldpath (either linkfile or cached-file) - * on rename_subvol. */ - if (src_cached == dst_cached) - rename_subvol = src_cached; - else - rename_subvol = dst_hashed; +unwind: + WIPE (&local->preoldparent); + WIPE (&local->postoldparent); + WIPE (&local->preparent); + WIPE (&local->postparent); + if (xattr) + dict_unref (xattr); - /* TODO: delete files in background */ + dht_rename_done (frame, this); - if (src_cached != dst_hashed && src_cached != dst_cached) - local->call_cnt++; + return 0; - if (src_hashed != rename_subvol && src_hashed != src_cached) - local->call_cnt++; +cleanup: + if (xattr) + dict_unref (xattr); + dht_rename_cleanup (frame); - if (dst_cached && dst_cached != dst_hashed && dst_cached != src_cached) - local->call_cnt++; + return 0; +} - if (local->call_cnt == 0) - goto unwind; - if (src_cached != dst_hashed && src_cached != dst_cached) { - gf_log (this->name, GF_LOG_TRACE, - "deleting old src datafile %s @ %s", - local->loc.path, src_cached->name); +int +dht_do_rename (call_frame_t *frame) +{ + dht_local_t *local = NULL; + xlator_t *dst_hashed = NULL; + xlator_t *src_cached = NULL; + xlator_t *dst_cached = NULL; + xlator_t *this = NULL; + xlator_t *rename_subvol = NULL; - STACK_WIND (frame, dht_rename_unlink_cbk, - src_cached, src_cached->fops->unlink, - &local->loc); - } - if (src_hashed != rename_subvol && src_hashed != src_cached) { - gf_log (this->name, GF_LOG_TRACE, - "deleting old src linkfile %s @ %s", - local->loc.path, src_hashed->name); + local = frame->local; + this = frame->this; - STACK_WIND (frame, dht_rename_unlink_cbk, - src_hashed, src_hashed->fops->unlink, - &local->loc); - } + dst_hashed = local->dst_hashed; + dst_cached = local->dst_cached; + src_cached = local->src_cached; - if (dst_cached - && (dst_cached != dst_hashed) - && (dst_cached != src_cached)) { - gf_log (this->name, GF_LOG_TRACE, - "deleting old dst datafile %s @ %s", - local->loc2.path, dst_cached->name); + if (src_cached == dst_cached) + rename_subvol = src_cached; + else + rename_subvol = dst_hashed; - STACK_WIND (frame, dht_rename_unlink_cbk, - dst_cached, dst_cached->fops->unlink, - &local->loc2); - } - return 0; + gf_log (this->name, GF_LOG_TRACE, + "renaming %s => %s (%s)", + local->loc.path, local->loc2.path, rename_subvol->name); -unwind: - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf); + if (local->linked == _gf_true) + FRAME_SU_DO (frame, dht_local_t); + STACK_WIND (frame, dht_rename_cbk, + rename_subvol, rename_subvol->fops->rename, + &local->loc, &local->loc2, NULL); - return 0; + return 0; } int -dht_do_rename (call_frame_t *frame) +dht_rename_links_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) { - dht_local_t *local = NULL; - xlator_t *dst_hashed = NULL; - xlator_t *src_cached = NULL; - xlator_t *dst_cached = NULL; - xlator_t *this = NULL; - xlator_t *rename_subvol = NULL; + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + int this_call_cnt = 0; - local = frame->local; - this = frame->this; + local = frame->local; + prev = cookie; - dst_hashed = local->dst_hashed; - dst_cached = local->dst_cached; - src_cached = local->src_cached; + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "link/file on %s failed (%s)", + prev->this->name, strerror (op_errno)); + local->op_ret = -1; + if (op_errno != ENOENT) + local->op_errno = op_errno; + } else if (local->src_cached == prev->this) { + /* merge of attr returned only from linkfile creation */ + dht_iatt_merge (this, &local->stbuf, stbuf, prev->this); + } - if (src_cached == dst_cached) - rename_subvol = src_cached; - else - rename_subvol = dst_hashed; + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + if (local->op_ret == -1) + goto cleanup; - gf_log (this->name, GF_LOG_TRACE, - "renaming %s => %s (%s)", - local->loc.path, local->loc2.path, rename_subvol->name); + dht_do_rename (frame); + } - STACK_WIND (frame, dht_rename_cbk, - rename_subvol, rename_subvol->fops->rename, - &local->loc, &local->loc2); + return 0; - return 0; +cleanup: + dht_rename_cleanup (frame); + + return 0; } int -dht_rename_links_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, - inode_t *inode, struct stat *stbuf) +dht_rename_unlink_links_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) { dht_local_t *local = NULL; call_frame_t *prev = NULL; - int this_call_cnt = 0; local = frame->local; prev = cookie; - - if (op_ret == -1) { + + if ((op_ret == -1) && (op_errno != ENOENT)) { gf_log (this->name, GF_LOG_DEBUG, - "link/file on %s failed (%s)", - prev->this->name, strerror (op_errno)); + "unlink of %s on %s failed (%s)", + local->loc2.path, prev->this->name, + strerror (op_errno)); local->op_ret = -1; local->op_errno = op_errno; } - this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) { - if (local->op_ret == -1) - goto unwind; - - dht_do_rename (frame); - } + if (local->op_ret == -1) + goto cleanup; + + dht_do_rename (frame); return 0; -unwind: - DHT_STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf); +cleanup: + dht_rename_cleanup (frame); return 0; } @@ -408,39 +761,54 @@ unwind: int dht_rename_create_links (call_frame_t *frame) { - dht_local_t *local = NULL; - xlator_t *this = NULL; - xlator_t *src_hashed = NULL; - xlator_t *src_cached = NULL; - xlator_t *dst_hashed = NULL; - xlator_t *dst_cached = NULL; - int call_cnt = 0; + dht_local_t *local = NULL; + xlator_t *this = NULL; + xlator_t *src_hashed = NULL; + xlator_t *src_cached = NULL; + xlator_t *dst_hashed = NULL; + xlator_t *dst_cached = NULL; + int call_cnt = 0; + dict_t *xattr = NULL; - local = frame->local; - this = frame->this; + local = frame->local; + this = frame->this; - src_hashed = local->src_hashed; - src_cached = local->src_cached; - dst_hashed = local->dst_hashed; - dst_cached = local->dst_cached; + src_hashed = local->src_hashed; + src_cached = local->src_cached; + dst_hashed = local->dst_hashed; + dst_cached = local->dst_cached; - if (src_cached == dst_cached) - goto nolinks; + DHT_MARK_FOP_INTERNAL (xattr); - if (dst_hashed != src_hashed && dst_hashed != src_cached) - call_cnt++; + if (src_cached == dst_cached) { + if (dst_hashed == dst_cached) + goto nolinks; - if (src_cached != dst_hashed) - call_cnt++; + gf_log (this->name, GF_LOG_TRACE, + "unlinking dst linkfile %s @ %s", + local->loc2.path, dst_hashed->name); - local->call_cnt = call_cnt; + STACK_WIND (frame, dht_rename_unlink_links_cbk, + dst_hashed, dst_hashed->fops->unlink, + &local->loc2, 0, xattr); + return 0; + } - if (dst_hashed != src_hashed && dst_hashed != src_cached) { - gf_log (this->name, GF_LOG_TRACE, - "linkfile %s @ %s => %s", - local->loc.path, dst_hashed->name, src_cached->name); - dht_linkfile_create (frame, dht_rename_links_cbk, + if (dst_hashed != src_hashed && dst_hashed != src_cached) + call_cnt++; + + if (src_cached != dst_hashed) + call_cnt++; + + local->call_cnt = call_cnt; + + if (dst_hashed != src_hashed && dst_hashed != src_cached) { + gf_log (this->name, GF_LOG_TRACE, + "linkfile %s @ %s => %s", + local->loc.path, dst_hashed->name, src_cached->name); + memcpy (local->gfid, local->loc.inode->gfid, 16); + dht_linkfile_create (frame, dht_rename_links_cbk, this, src_cached, dst_hashed, &local->loc); } @@ -450,113 +818,107 @@ dht_rename_create_links (call_frame_t *frame) local->loc2.path, src_cached->name); STACK_WIND (frame, dht_rename_links_cbk, src_cached, src_cached->fops->link, - &local->loc, &local->loc2); + &local->loc, &local->loc2, xattr); } nolinks: - if (!call_cnt) { - /* skip to next step */ - dht_do_rename (frame); - } - - return 0; + if (!call_cnt) { + /* skip to next step */ + dht_do_rename (frame); + } + if (xattr) + dict_unref (xattr); + + return 0; } int dht_rename (call_frame_t *frame, xlator_t *this, - loc_t *oldloc, loc_t *newloc) + loc_t *oldloc, loc_t *newloc, dict_t *xdata) { - xlator_t *src_cached = NULL; - xlator_t *src_hashed = NULL; - xlator_t *dst_cached = NULL; - xlator_t *dst_hashed = NULL; - int op_errno = -1; - int ret = -1; - dht_local_t *local = NULL; - - - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (oldloc, err); - VALIDATE_OR_GOTO (newloc, err); - - src_hashed = dht_subvol_get_hashed (this, oldloc); - if (!src_hashed) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume in layout for path=%s", - oldloc->path); - op_errno = EINVAL; - goto err; - } - - src_cached = dht_subvol_get_cached (this, oldloc->inode); - if (!src_cached) { - gf_log (this->name, GF_LOG_DEBUG, - "no cached subvolume for path=%s", oldloc->path); - op_errno = EINVAL; - goto err; - } - - dst_hashed = dht_subvol_get_hashed (this, newloc); - if (!dst_hashed) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume in layout for path=%s", - newloc->path); - op_errno = EINVAL; - goto err; - } - - if (newloc->inode) - dst_cached = dht_subvol_get_cached (this, newloc->inode); - - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - ret = loc_copy (&local->loc, oldloc); - if (ret == -1) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - ret = loc_copy (&local->loc2, newloc); - if (ret == -1) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - local->src_hashed = src_hashed; - local->src_cached = src_cached; - local->dst_hashed = dst_hashed; - local->dst_cached = dst_cached; - - gf_log (this->name, GF_LOG_TRACE, - "renaming %s (hash=%s/cache=%s) => %s (hash=%s/cache=%s)", - oldloc->path, src_hashed->name, src_cached->name, - newloc->path, dst_hashed->name, - dst_cached ? dst_cached->name : "<nul>"); - - if (S_ISDIR (oldloc->inode->st_mode)) { - dht_rename_dir (frame, this); - } else { - local->op_ret = 0; - dht_rename_create_links (frame); - } - - return 0; + xlator_t *src_cached = NULL; + xlator_t *src_hashed = NULL; + xlator_t *dst_cached = NULL; + xlator_t *dst_hashed = NULL; + int op_errno = -1; + int ret = -1; + dht_local_t *local = NULL; + + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (oldloc, err); + VALIDATE_OR_GOTO (newloc, err); + + src_hashed = dht_subvol_get_hashed (this, oldloc); + if (!src_hashed) { + gf_log (this->name, GF_LOG_INFO, + "no subvolume in layout for path=%s", + oldloc->path); + op_errno = EINVAL; + goto err; + } + + src_cached = dht_subvol_get_cached (this, oldloc->inode); + if (!src_cached) { + gf_log (this->name, GF_LOG_INFO, + "no cached subvolume for path=%s", oldloc->path); + op_errno = EINVAL; + goto err; + } + + dst_hashed = dht_subvol_get_hashed (this, newloc); + if (!dst_hashed) { + gf_log (this->name, GF_LOG_INFO, + "no subvolume in layout for path=%s", + newloc->path); + op_errno = EINVAL; + goto err; + } + + if (newloc->inode) + dst_cached = dht_subvol_get_cached (this, newloc->inode); + + local = dht_local_init (frame, oldloc, NULL, GF_FOP_RENAME); + if (!local) { + op_errno = ENOMEM; + goto err; + } + /* cached_subvol will be set from dht_local_init, reset it to NULL, + as the logic of handling rename is different */ + local->cached_subvol = NULL; + + ret = loc_copy (&local->loc2, newloc); + if (ret == -1) { + op_errno = ENOMEM; + goto err; + } + + local->src_hashed = src_hashed; + local->src_cached = src_cached; + local->dst_hashed = dst_hashed; + local->dst_cached = dst_cached; + + gf_log (this->name, GF_LOG_TRACE, + "renaming %s (hash=%s/cache=%s) => %s (hash=%s/cache=%s)", + oldloc->path, src_hashed->name, src_cached->name, + newloc->path, dst_hashed->name, + dst_cached ? dst_cached->name : "<nul>"); + + if (IA_ISDIR (oldloc->inode->ia_type)) { + dht_rename_dir (frame, this); + } else { + local->op_ret = 0; + dht_rename_create_links (frame); + } + + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (rename, frame, -1, op_errno, NULL, NULL, NULL, NULL, + NULL, NULL); - return 0; + return 0; } diff --git a/xlators/cluster/dht/src/dht-selfheal.c b/xlators/cluster/dht/src/dht-selfheal.c index df8b2047b..3fe96b1c7 100644 --- a/xlators/cluster/dht/src/dht-selfheal.c +++ b/xlators/cluster/dht/src/dht-selfheal.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef _CONFIG_H @@ -26,459 +17,1013 @@ #include "glusterfs.h" #include "xlator.h" #include "dht-common.h" +#include "glusterfs-acl.h" + +#define DHT_SET_LAYOUT_RANGE(layout,i,srt,chunk,cnt,path) do { \ + layout->list[i].start = srt; \ + layout->list[i].stop = srt + chunk - 1; \ + \ + gf_log (this->name, GF_LOG_TRACE, \ + "gave fix: %u - %u on %s for %s", \ + layout->list[i].start, layout->list[i].stop, \ + layout->list[i].xlator->name, path); \ + } while (0) + +#define DHT_RESET_LAYOUT_RANGE(layout) do { \ + int cnt = 0; \ + for (cnt = 0; cnt < layout->cnt; cnt++ ) { \ + layout->list[cnt].start = 0; \ + layout->list[cnt].stop = 0; \ + } \ + } while (0) + +static uint32_t +dht_overlap_calc (dht_layout_t *old, int o, dht_layout_t *new, int n) +{ + if (o >= old->cnt || n >= new->cnt) + return 0; + + if (old->list[o].err > 0 || new->list[n].err > 0) + return 0; + + if (old->list[o].start == old->list[o].stop) { + return 0; + } + + if (new->list[n].start == new->list[n].stop) { + return 0; + } + + if ((old->list[o].start > new->list[n].stop) || + (old->list[o].stop < new->list[n].start)) + return 0; + + return min (old->list[o].stop, new->list[n].stop) - + max (old->list[o].start, new->list[n].start) + 1; +} int dht_selfheal_dir_finish (call_frame_t *frame, xlator_t *this, int ret) { - dht_local_t *local = NULL; - + dht_local_t *local = NULL; - local = frame->local; - local->selfheal.dir_cbk (frame, NULL, frame->this, ret, - local->op_errno); + local = frame->local; + local->selfheal.dir_cbk (frame, NULL, frame->this, ret, + local->op_errno, NULL); - return 0; + return 0; } int dht_selfheal_dir_xattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno) + int op_ret, int op_errno, dict_t *xdata) { - dht_local_t *local = NULL; - call_frame_t *prev = NULL; - xlator_t *subvol = NULL; - int i = 0; - dht_layout_t *layout = NULL; - int err = 0; - int this_call_cnt = 0; - - local = frame->local; - layout = local->selfheal.layout; - prev = cookie; - subvol = prev->this; - - if (op_ret == 0) - err = 0; - else - err = op_errno; - - for (i = 0; i < layout->cnt; i++) { - if (layout->list[i].xlator == subvol) { - layout->list[i].err = err; - break; - } - } + dht_local_t *local = NULL; + call_frame_t *prev = NULL; + xlator_t *subvol = NULL; + int i = 0; + dht_layout_t *layout = NULL; + int err = 0; + int this_call_cnt = 0; + + local = frame->local; + layout = local->selfheal.layout; + prev = cookie; + subvol = prev->this; + + if (op_ret == 0) + err = 0; + else + err = op_errno; + + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].xlator == subvol) { + layout->list[i].err = err; + break; + } + } - this_call_cnt = dht_frame_return (frame); + this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) { - dht_selfheal_dir_finish (frame, this, 0); - } + if (is_last_call (this_call_cnt)) { + dht_selfheal_dir_finish (frame, this, 0); + } - return 0; + return 0; } int dht_selfheal_dir_xattr_persubvol (call_frame_t *frame, loc_t *loc, - dht_layout_t *layout, int i) + dht_layout_t *layout, int i, + xlator_t *req_subvol) { - xlator_t *subvol = NULL; - dict_t *xattr = NULL; - int ret = 0; - xlator_t *this = NULL; - int32_t *disk_layout = NULL; - - - subvol = layout->list[i].xlator; - this = frame->this; + xlator_t *subvol = NULL; + dict_t *xattr = NULL; + int ret = 0; + xlator_t *this = NULL; + int32_t *disk_layout = NULL; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; + + local = frame->local; + if (req_subvol) + subvol = req_subvol; + else + subvol = layout->list[i].xlator; + this = frame->this; + + GF_VALIDATE_OR_GOTO ("", this, err); + GF_VALIDATE_OR_GOTO (this->name, layout, err); + GF_VALIDATE_OR_GOTO (this->name, local, err); + GF_VALIDATE_OR_GOTO (this->name, subvol, err); + VALIDATE_OR_GOTO (this->private, err); + + conf = this->private; + + xattr = get_new_dict (); + if (!xattr) { + goto err; + } - xattr = get_new_dict (); - if (!xattr) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + ret = dht_disk_layout_extract (this, layout, i, &disk_layout); + if (ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "%s: (subvol %s) failed to extract disk layout", + loc->path, subvol->name); + goto err; + } - ret = dht_disk_layout_extract (this, layout, i, &disk_layout); - if (ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "failed to extract disk layout"); - goto err; - } + ret = dict_set_bin (xattr, conf->xattr_name, disk_layout, 4 * 4); + if (ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "%s: (subvol %s) failed to set xattr dictionary", + loc->path, subvol->name); + goto err; + } + disk_layout = NULL; - ret = dict_set_bin (xattr, "trusted.glusterfs.dht", - disk_layout, 4 * 4); - if (ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "failed to set xattr dictionary"); - goto err; - } - disk_layout = NULL; + gf_log (this->name, GF_LOG_TRACE, + "setting hash range %u - %u (type %d) on subvolume %s for %s", + layout->list[i].start, layout->list[i].stop, + layout->type, subvol->name, loc->path); - gf_log (this->name, GF_LOG_TRACE, - "setting hash range %u - %u (type %d) on subvolume %s for %s", - layout->list[i].start, layout->list[i].stop, - layout->type, subvol->name, loc->path); + dict_ref (xattr); - dict_ref (xattr); + if (!uuid_is_null (local->gfid)) + uuid_copy (loc->gfid, local->gfid); - STACK_WIND (frame, dht_selfheal_dir_xattr_cbk, - subvol, subvol->fops->setxattr, - loc, xattr, 0); + STACK_WIND (frame, dht_selfheal_dir_xattr_cbk, + subvol, subvol->fops->setxattr, + loc, xattr, 0, NULL); - dict_unref (xattr); + dict_unref (xattr); - return 0; + return 0; err: - if (xattr) - dict_destroy (xattr); + if (xattr) + dict_destroy (xattr); - if (disk_layout) - FREE (disk_layout); + GF_FREE (disk_layout); - dht_selfheal_dir_xattr_cbk (frame, subvol, frame->this, - -1, ENOMEM); - return 0; + dht_selfheal_dir_xattr_cbk (frame, subvol, frame->this, + -1, ENOMEM, NULL); + return 0; } +int +dht_fix_dir_xattr (call_frame_t *frame, loc_t *loc, dht_layout_t *layout) +{ + dht_local_t *local = NULL; + int i = 0; + int count = 0; + xlator_t *this = NULL; + dht_conf_t *conf = NULL; + dht_layout_t *dummy = NULL; + + local = frame->local; + this = frame->this; + conf = this->private; + + gf_log (this->name, GF_LOG_DEBUG, + "writing the new range for all subvolumes"); + + local->call_cnt = count = conf->subvolume_cnt; + + for (i = 0; i < layout->cnt; i++) { + dht_selfheal_dir_xattr_persubvol (frame, loc, layout, i, NULL); + + if (--count == 0) + goto out; + } + /* if we are here, subvolcount > layout_count. subvols-per-directory + * option might be set here. We need to clear out layout from the + * non-participating subvolumes, else it will result in overlaps */ + dummy = dht_layout_new (this, 1); + if (!dummy) + goto out; + for (i = 0; i < conf->subvolume_cnt; i++) { + if (_gf_false == + dht_is_subvol_in_layout (layout, conf->subvolumes[i])) { + dht_selfheal_dir_xattr_persubvol (frame, loc, dummy, 0, + conf->subvolumes[i]); + if (--count == 0) + break; + } + } + + dht_layout_unref (this, dummy); +out: + return 0; +} int dht_selfheal_dir_xattr (call_frame_t *frame, loc_t *loc, dht_layout_t *layout) { - dht_local_t *local = NULL; - int missing_xattr = 0; - int i = 0; - int ret = 0; - xlator_t *this = NULL; - - local = frame->local; - this = frame->this; - - for (i = 0; i < layout->cnt; i++) { - if (layout->list[i].err != -1 || !layout->list[i].stop) { - /* err != -1 would mean xattr present on the directory - * or the directory is itself non existant. - * !layout->list[i].stop would mean layout absent - */ - continue; - } - missing_xattr++; - } + dht_local_t *local = NULL; + int missing_xattr = 0; + int i = 0; + xlator_t *this = NULL; + dht_conf_t *conf = NULL; + dht_layout_t *dummy = NULL; + + local = frame->local; + this = frame->this; + conf = this->private; + + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].err != -1 || !layout->list[i].stop) { + /* err != -1 would mean xattr present on the directory + * or the directory is non existent. + * !layout->list[i].stop would mean layout absent + */ + + continue; + } + missing_xattr++; + } - gf_log (this->name, GF_LOG_TRACE, - "%d subvolumes missing xattr for %s", - missing_xattr, loc->path); + gf_log (this->name, GF_LOG_TRACE, + "%d subvolumes missing xattr for %s", + missing_xattr, loc->path); - if (missing_xattr == 0) { - dht_selfheal_dir_finish (frame, this, 0); - return 0; - } + if (missing_xattr == 0) { + dht_selfheal_dir_finish (frame, this, 0); + return 0; + } - local->call_cnt = missing_xattr; + local->call_cnt = missing_xattr; - for (i = 0; i < layout->cnt; i++) { - if (layout->list[i].err != -1 || !layout->list[i].stop) - continue; + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].err != -1 || !layout->list[i].stop) + continue; - ret = dht_selfheal_dir_xattr_persubvol (frame, loc, layout, i); + dht_selfheal_dir_xattr_persubvol (frame, loc, layout, i, NULL); - if (--missing_xattr == 0) - break; - } - return 0; + if (--missing_xattr == 0) + break; + } + dummy = dht_layout_new (this, 1); + if (!dummy) + goto out; + for (i = 0; i < conf->subvolume_cnt; i++) { + if (_gf_false == + dht_is_subvol_in_layout (layout, conf->subvolumes[i])) { + dht_selfheal_dir_xattr_persubvol (frame, loc, dummy, 0, + conf->subvolumes[i]); + } + } + dht_layout_unref (this, dummy); +out: + return 0; +} + +int +dht_selfheal_dir_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *statpre, + struct iatt *statpost, dict_t *xdata) +{ + dht_local_t *local = NULL; + dht_layout_t *layout = NULL; + int this_call_cnt = 0; + + local = frame->local; + layout = local->selfheal.layout; + + this_call_cnt = dht_frame_return (frame); + + if (is_last_call (this_call_cnt)) { + dht_selfheal_dir_xattr (frame, &local->loc, layout); + } + + return 0; } int +dht_selfheal_dir_setattr (call_frame_t *frame, loc_t *loc, struct iatt *stbuf, + int32_t valid, dht_layout_t *layout) +{ + int missing_attr = 0; + int i = 0; + dht_local_t *local = NULL; + xlator_t *this = NULL; + + local = frame->local; + this = frame->this; + + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].err == -1) + missing_attr++; + } + + if (missing_attr == 0) { + dht_selfheal_dir_xattr (frame, loc, layout); + return 0; + } + + if (!uuid_is_null (local->gfid)) + uuid_copy (loc->gfid, local->gfid); + + local->call_cnt = missing_attr; + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].err == -1) { + gf_log (this->name, GF_LOG_TRACE, + "setattr for %s on subvol %s", + loc->path, layout->list[i].xlator->name); + + STACK_WIND (frame, dht_selfheal_dir_setattr_cbk, + layout->list[i].xlator, + layout->list[i].xlator->fops->setattr, + loc, stbuf, valid, NULL); + } + } + + return 0; +} + +int dht_selfheal_dir_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf) + int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent, + dict_t *xdata) { - dht_local_t *local = NULL; - dht_layout_t *layout = NULL; - call_frame_t *prev = NULL; - xlator_t *subvol = NULL; - int i = 0; - int this_call_cnt = 0; - - - local = frame->local; - layout = local->selfheal.layout; - prev = cookie; - subvol = prev->this; - - if ((op_ret == 0) || (op_errno == EEXIST)) { - for (i = 0; i < layout->cnt; i++) { - if (layout->list[i].xlator == subvol) { - layout->list[i].err = -1; - break; - } - } - } + dht_local_t *local = NULL; + dht_layout_t *layout = NULL; + call_frame_t *prev = NULL; + xlator_t *subvol = NULL; + int i = 0; + int this_call_cnt = 0; - this_call_cnt = dht_frame_return (frame); - if (is_last_call (this_call_cnt)) { - dht_selfheal_dir_xattr (frame, &local->loc, layout); - } + local = frame->local; + layout = local->selfheal.layout; + prev = cookie; + subvol = prev->this; - return 0; + if ((op_ret == 0) || ((op_ret == -1) && (op_errno == EEXIST))) { + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].xlator == subvol) { + layout->list[i].err = -1; + break; + } + } + } + + if (op_ret) { + gf_log (this->name, ((op_errno == EEXIST) ? GF_LOG_DEBUG : + GF_LOG_WARNING), + "selfhealing directory %s failed: %s", + local->loc.path, strerror (op_errno)); + goto out; + } + + dht_iatt_merge (this, &local->stbuf, stbuf, prev->this); + dht_iatt_merge (this, &local->preparent, preparent, prev->this); + dht_iatt_merge (this, &local->postparent, postparent, prev->this); + +out: + this_call_cnt = dht_frame_return (frame); + + if (is_last_call (this_call_cnt)) { + dht_selfheal_dir_setattr (frame, &local->loc, &local->stbuf, 0xffffff, layout); + } + + return 0; } +void +dht_selfheal_dir_mkdir_setacl (dict_t *xattr, dict_t *dict) +{ + data_t *acl_default = NULL; + data_t *acl_access = NULL; + xlator_t *this = NULL; + int ret = -1; + + GF_ASSERT (xattr); + GF_ASSERT (dict); + + this = THIS; + GF_ASSERT (this); + + acl_default = dict_get (xattr, POSIX_ACL_DEFAULT_XATTR); + + if (!acl_default) { + gf_log (this->name, GF_LOG_DEBUG, + "ACL_DEFAULT xattr not present"); + goto cont; + } + ret = dict_set (dict, POSIX_ACL_DEFAULT_XATTR, acl_default); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "Could not set ACL_DEFAULT xattr"); +cont: + acl_access = dict_get (xattr, POSIX_ACL_ACCESS_XATTR); + if (!acl_access) { + gf_log (this->name, GF_LOG_DEBUG, + "ACL_ACCESS xattr not present"); + goto out; + } + ret = dict_set (dict, POSIX_ACL_ACCESS_XATTR, acl_access); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "Could not set ACL_ACCESS xattr"); + +out: + return; +} int dht_selfheal_dir_mkdir (call_frame_t *frame, loc_t *loc, - dht_layout_t *layout, int force) + dht_layout_t *layout, int force) { - int missing_dirs = 0; - int i = 0; - dht_local_t *local = NULL; - xlator_t *this = NULL; + int missing_dirs = 0; + int i = 0; + int ret = -1; + dht_local_t *local = NULL; + xlator_t *this = NULL; + dict_t *dict = NULL; + + local = frame->local; + this = frame->this; + + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].err == ENOENT || force) + missing_dirs++; + } + if (missing_dirs == 0) { + dht_selfheal_dir_setattr (frame, loc, &local->stbuf, 0xffffffff, layout); + return 0; + } - local = frame->local; - this = frame->this; + local->call_cnt = missing_dirs; + if (!uuid_is_null (local->gfid)) { + dict = dict_new (); + if (!dict) + return -1; + + ret = dict_set_static_bin (dict, "gfid-req", local->gfid, 16); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to set gfid in dict", loc->path); + } else if (local->params) { + /* Send the dictionary from higher layers directly */ + dict = dict_ref (local->params); + } + /* Set acls */ + if (local->xattr && dict) + dht_selfheal_dir_mkdir_setacl (local->xattr, dict); + + if (!dict) + gf_log (this->name, GF_LOG_WARNING, + "dict is NULL, need to make sure gfids are same"); + + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].err == ENOENT || force) { + gf_log (this->name, GF_LOG_DEBUG, + "creating directory %s on subvol %s", + loc->path, layout->list[i].xlator->name); + + STACK_WIND (frame, dht_selfheal_dir_mkdir_cbk, + layout->list[i].xlator, + layout->list[i].xlator->fops->mkdir, + loc, + st_mode_from_ia (local->stbuf.ia_prot, + local->stbuf.ia_type), + 0, dict); + } + } - for (i = 0; i < layout->cnt; i++) { - if (layout->list[i].err == ENOENT || force) - missing_dirs++; - } + if (dict) + dict_unref (dict); - if (missing_dirs == 0) { - dht_selfheal_dir_xattr (frame, loc, layout); - return 0; - } + return 0; +} - local->call_cnt = missing_dirs; - for (i = 0; i < layout->cnt; i++) { - if (layout->list[i].err == ENOENT || force) { - gf_log (this->name, GF_LOG_TRACE, - "creating directory %s on subvol %s", - loc->path, layout->list[i].xlator->name); - - STACK_WIND (frame, dht_selfheal_dir_mkdir_cbk, - layout->list[i].xlator, - layout->list[i].xlator->fops->mkdir, - loc, local->stbuf.st_mode); - } - } - return 0; +int +dht_selfheal_layout_alloc_start (xlator_t *this, loc_t *loc, + dht_layout_t *layout) +{ + int start = 0; + uint32_t hashval = 0; + int ret = 0; + + ret = dht_hash_compute (this, layout->type, loc->path, &hashval); + if (ret == 0) { + start = (hashval % layout->cnt); + } + + return start; } -void -dht_selfheal_layout_new_directory (call_frame_t *frame, loc_t *loc, - dht_layout_t *layout) +static inline int +dht_get_layout_count (xlator_t *this, dht_layout_t *layout, int new_layout) { - dht_conf_t *conf = NULL; - xlator_t *this = NULL; - uint32_t chunk = 0; - int i = 0; - uint32_t start = 0; - int cnt = 0; - int err = 0; - - this = frame->this; - conf = this->private; - - for (i = 0; i < layout->cnt; i++) { - err = layout->list[i].err; - if (err == -1 || err == 0) { - layout->list[i].err = -1; - cnt++; - } - } + int i = 0; + int j = 0; + int err = 0; + int count = 0; + dht_conf_t *conf = NULL; + + /* Gets in use only for replace-brick, remove-brick */ + conf = this->private; + for (i = 0; i < layout->cnt; i++) { + for (j = 0; j < conf->subvolume_cnt; j++) { + if (conf->decommissioned_bricks[j] && + conf->decommissioned_bricks[j] == layout->list[i].xlator) { + layout->list[i].err = EINVAL; + break; + } + } + } + + for (i = 0; i < layout->cnt; i++) { + err = layout->list[i].err; + if (err == -1 || err == 0 || err == ENOENT) { + /* Setting list[i].err = -1 is an indication for + dht_selfheal_layout_new_directory() to assign + a range. We set it to -1 based on any one of + the three criteria: + + - err == -1 already, which means directory + existed but layout was not set on it. + + - err == 0, which means directory exists and + has an old layout piece which will be + overwritten now. + + - err == ENOENT, which means directory does + not exist (possibly racing with mkdir or + finishing half done mkdir). The missing + directory will be attempted to be recreated. + + It is important to note that it is safe + to race with mkdir() as self-heal and + mkdir are idempotent operations. Both will + strive to set the directory and layouts to + the same final state. + */ + count++; + if (!err) + layout->list[i].err = -1; + } + } /* no subvolume has enough space, but can't stop directory creation */ - if (!cnt) { + if (!count || !new_layout) { for (i = 0; i < layout->cnt; i++) { err = layout->list[i].err; if (err == ENOSPC) { layout->list[i].err = -1; - cnt++; + count++; } } } - chunk = ((unsigned long) 0xffffffff) / cnt; - - start = 0; - for (i = 0; i < layout->cnt; i++) { - err = layout->list[i].err; - if (err == -1) { - layout->list[i].start = start; - layout->list[i].stop = start + chunk - 1; - - start = start + chunk; - - gf_log (this->name, GF_LOG_TRACE, - "gave fix: %u - %u on %s for %s", - layout->list[i].start, layout->list[i].stop, - layout->list[i].xlator->name, loc->path); - if (--cnt == 0) { - layout->list[i].stop = 0xffffffff; - break; - } - } + /* if layout->spread_cnt is set, check if it is <= available + * subvolumes (down brick and decommissioned bricks are considered + * un-availbale). Else return count (available up bricks) */ + count = ((layout->spread_cnt && + (layout->spread_cnt <= count)) ? + layout->spread_cnt : ((count) ? count : 1)); + + return count; +} + + +void dht_selfheal_layout_new_directory (call_frame_t *frame, loc_t *loc, + dht_layout_t *new_layout); + +void dht_layout_entry_swap (dht_layout_t *layout, int i, int j); +void dht_layout_range_swap (dht_layout_t *layout, int i, int j); + +/* + * It's a bit icky using local variables in a macro, but it makes the rest + * of the code a lot clearer. + */ +#define OV_ENTRY(x,y) table[x*new->cnt+y] + +void +dht_selfheal_layout_maximize_overlap (call_frame_t *frame, loc_t *loc, + dht_layout_t *new, dht_layout_t *old) +{ + int i = 0; + int j = 0; + uint32_t curr_overlap = 0; + uint32_t max_overlap = 0; + int max_overlap_idx = -1; + uint32_t overlap = 0; + uint32_t *table = NULL; + + dht_layout_sort_volname (old); + /* Now both old_layout->list[] and new_layout->list[] + are match the same xlators/subvolumes. i.e, + old_layout->[i] and new_layout->[i] are referring + to the same subvolumes + */ + + /* Build a table of overlaps between new[i] and old[j]. */ + table = alloca(sizeof(overlap)*old->cnt*new->cnt); + if (!table) { + return; + } + memset(table,0,sizeof(overlap)*old->cnt*new->cnt); + for (i = 0; i < new->cnt; ++i) { + for (j = 0; j < old->cnt; ++j) { + OV_ENTRY(i,j) = dht_overlap_calc(old,j,new,i); + } + } + + for (i = 0; i < new->cnt; i++) { + if (new->list[i].err > 0) { + /* Subvol might be marked for decommission + with EINVAL, or some other serious error + marked with positive errno. + */ + continue; + } + + max_overlap = 0; + max_overlap_idx = i; + for (j = (i + 1); j < new->cnt; ++j) { + if (new->list[j].err > 0) { + /* Subvol might be marked for decommission + with EINVAL, or some other serious error + marked with positive errno. + */ + continue; + } + /* Calculate the overlap now. */ + curr_overlap = OV_ENTRY(i,i) + OV_ENTRY(j,j); + /* Calculate the overlap after the proposed swap. */ + overlap = OV_ENTRY(i,j) + OV_ENTRY(j,i); + /* Are we better than status quo? */ + if (overlap > curr_overlap) { + overlap -= curr_overlap; + /* Are we better than the previous choice? */ + if (overlap > max_overlap) { + max_overlap = overlap; + max_overlap_idx = j; + } + } + } + + if (max_overlap_idx != i) { + dht_layout_range_swap (new, i, max_overlap_idx); + /* Need to swap the table values too. */ + for (j = 0; j < old->cnt; ++j) { + overlap = OV_ENTRY(i,j); + OV_ENTRY(i,j) = OV_ENTRY(max_overlap_idx,j); + OV_ENTRY(max_overlap_idx,j) = overlap; + } + } } } +dht_layout_t * +dht_fix_layout_of_directory (call_frame_t *frame, loc_t *loc, + dht_layout_t *layout) +{ + int i = 0; + xlator_t *this = NULL; + dht_layout_t *new_layout = NULL; + dht_conf_t *priv = NULL; + dht_local_t *local = NULL; + uint32_t subvol_down = 0; + int ret = 0; + + this = frame->this; + priv = this->private; + local = frame->local; + + if (layout->type == DHT_HASH_TYPE_DM_USER) { + gf_log (THIS->name, GF_LOG_DEBUG, "leaving %s alone", + loc->path); + goto done; + } + + new_layout = dht_layout_new (this, priv->subvolume_cnt); + if (!new_layout) + goto done; + + /* If a subvolume is down, do not re-write the layout. */ + ret = dht_layout_anomalies (this, loc, layout, NULL, NULL, NULL, + &subvol_down, NULL, NULL); + + if (subvol_down || (ret == -1)) { + gf_log (this->name, GF_LOG_WARNING, "%u subvolume(s) are down" + ". Skipping fix layout.", subvol_down); + GF_FREE (new_layout); + return NULL; + } + + for (i = 0; i < new_layout->cnt; i++) { + if (layout->list[i].err != ENOSPC) + new_layout->list[i].err = layout->list[i].err; + else + new_layout->list[i].err = -1; + + new_layout->list[i].xlator = layout->list[i].xlator; + } + + /* First give it a layout as though it is a new directory. This + ensures rotation to kick in */ + dht_layout_sort_volname (new_layout); + dht_selfheal_layout_new_directory (frame, loc, new_layout); + + /* Now selectively re-assign ranges only when it helps */ + dht_selfheal_layout_maximize_overlap (frame, loc, new_layout, layout); + +done: + if (new_layout) { + /* Now that the new layout has all the proper layout, change the + inode context */ + dht_layout_set (this, loc->inode, new_layout); + + /* Make sure the extra 'ref' for existing layout is removed */ + dht_layout_unref (this, local->layout); + + local->layout = new_layout; + } + + return local->layout; +} + + +void +dht_selfheal_layout_new_directory (call_frame_t *frame, loc_t *loc, + dht_layout_t *layout) +{ + xlator_t *this = NULL; + uint32_t chunk = 0; + int i = 0; + uint32_t start = 0; + int cnt = 0; + int err = 0; + int start_subvol = 0; + + this = frame->this; + + cnt = dht_get_layout_count (this, layout, 1); + + chunk = ((unsigned long) 0xffffffff) / ((cnt) ? cnt : 1); + + start_subvol = dht_selfheal_layout_alloc_start (this, loc, layout); + + /* clear out the range, as we are re-computing here */ + DHT_RESET_LAYOUT_RANGE (layout); + for (i = start_subvol; i < layout->cnt; i++) { + err = layout->list[i].err; + if (err == -1 || err == ENOENT) { + DHT_SET_LAYOUT_RANGE(layout, i, start, chunk, + cnt, loc->path); + if (--cnt == 0) { + layout->list[i].stop = 0xffffffff; + goto done; + } + start += chunk; + } + } + + for (i = 0; i < start_subvol; i++) { + err = layout->list[i].err; + if (err == -1 || err == ENOENT) { + DHT_SET_LAYOUT_RANGE(layout, i, start, chunk, + cnt, loc->path); + if (--cnt == 0) { + layout->list[i].stop = 0xffffffff; + goto done; + } + start += chunk; + } + } + +done: + return; +} + int dht_selfheal_dir_getafix (call_frame_t *frame, loc_t *loc, - dht_layout_t *layout) + dht_layout_t *layout) { - dht_conf_t *conf = NULL; - xlator_t *this = NULL; - dht_local_t *local = NULL; - int missing = -1; - int down = -1; - int holes = -1; - int ret = -1; - int i = -1; - int overlaps = -1; - - this = frame->this; - conf = this->private; - local = frame->local; - - missing = local->selfheal.missing; - down = local->selfheal.down; - holes = local->selfheal.hole_cnt; - overlaps = local->selfheal.overlaps_cnt; - - if ((missing + down) == conf->subvolume_cnt) { - dht_selfheal_layout_new_directory (frame, loc, layout); - ret = 0; - } + dht_local_t *local = NULL; + uint32_t holes = 0; + int ret = -1; + int i = -1; + uint32_t overlaps = 0; - if (holes <= down) { - /* the down subvol might fill up the holes */ - ret = 0; - } + local = frame->local; - if (holes || missing || overlaps) { - dht_selfheal_layout_new_directory (frame, loc, layout); - ret = 0; - } + holes = local->selfheal.hole_cnt; + overlaps = local->selfheal.overlaps_cnt; - for (i = 0; i < layout->cnt; i++) { - /* directory not present */ - if (layout->list[i].err == ENOENT) { - ret = 0; - break; - } - } + if (holes || overlaps) { + dht_selfheal_layout_new_directory (frame, loc, layout); + ret = 0; + } - /* TODO: give a fix to these non-virgins */ + for (i = 0; i < layout->cnt; i++) { + /* directory not present */ + if (layout->list[i].err == ENOENT) { + ret = 0; + break; + } + } - return ret; + /* TODO: give a fix to these non-virgins */ + + return ret; } int -dht_selfheal_new_directory (call_frame_t *frame, - dht_selfheal_dir_cbk_t dir_cbk, - dht_layout_t *layout) +dht_selfheal_new_directory (call_frame_t *frame, + dht_selfheal_dir_cbk_t dir_cbk, + dht_layout_t *layout) { - dht_local_t *local = NULL; + dht_local_t *local = NULL; - local = frame->local; + local = frame->local; - local->selfheal.dir_cbk = dir_cbk; - local->selfheal.layout = layout; + local->selfheal.dir_cbk = dir_cbk; + local->selfheal.layout = dht_layout_ref (frame->this, layout); - dht_layout_sort_volname (layout); - dht_selfheal_layout_new_directory (frame, &local->loc, layout); - dht_selfheal_dir_xattr (frame, &local->loc, layout); - return 0; + dht_layout_sort_volname (layout); + dht_selfheal_layout_new_directory (frame, &local->loc, layout); + dht_selfheal_dir_xattr (frame, &local->loc, layout); + return 0; +} + +int +dht_fix_directory_layout (call_frame_t *frame, + dht_selfheal_dir_cbk_t dir_cbk, + dht_layout_t *layout) +{ + dht_local_t *local = NULL; + dht_layout_t *tmp_layout = NULL; + + local = frame->local; + + local->selfheal.dir_cbk = dir_cbk; + local->selfheal.layout = dht_layout_ref (frame->this, layout); + + /* No layout sorting required here */ + tmp_layout = dht_fix_layout_of_directory (frame, &local->loc, layout); + if (!tmp_layout) { + return -1; + } + dht_fix_dir_xattr (frame, &local->loc, tmp_layout); + + return 0; } int dht_selfheal_directory (call_frame_t *frame, dht_selfheal_dir_cbk_t dir_cbk, - loc_t *loc, dht_layout_t *layout) + loc_t *loc, dht_layout_t *layout) { - dht_local_t *local = NULL; - uint32_t holes = 0; - uint32_t overlaps = 0; - uint32_t missing = 0; - uint32_t down = 0; - uint32_t misc = 0; - int ret = 0; - xlator_t *this = NULL; - - local = frame->local; - this = frame->this; - - ret = dht_layout_anomalies (this, loc, layout, - &local->selfheal.hole_cnt, - &local->selfheal.overlaps_cnt, - &local->selfheal.missing, - &local->selfheal.down, - &local->selfheal.misc); - - holes = local->selfheal.hole_cnt; - overlaps = local->selfheal.overlaps_cnt; - missing = local->selfheal.missing; - down = local->selfheal.down; - misc = local->selfheal.misc; - - local->selfheal.dir_cbk = dir_cbk; - local->selfheal.layout = layout; - - if (down) { - gf_log (this->name, GF_LOG_DEBUG, - "%d subvolumes down -- not fixing", down); - ret = 0; - goto sorry_no_fix; - } + dht_local_t *local = NULL; + uint32_t down = 0; + uint32_t misc = 0; + int ret = 0; + xlator_t *this = NULL; + + local = frame->local; + this = frame->this; + + dht_layout_anomalies (this, loc, layout, + &local->selfheal.hole_cnt, + &local->selfheal.overlaps_cnt, + NULL, &local->selfheal.down, + &local->selfheal.misc, NULL); + + down = local->selfheal.down; + misc = local->selfheal.misc; + + local->selfheal.dir_cbk = dir_cbk; + local->selfheal.layout = dht_layout_ref (this, layout); + + if (down) { + gf_log (this->name, GF_LOG_WARNING, + "%d subvolumes down -- not fixing", down); + ret = 0; + goto sorry_no_fix; + } - if (misc) { - gf_log (this->name, GF_LOG_DEBUG, - "%d subvolumes have unrecoverable errors", misc); - ret = 0; - goto sorry_no_fix; - } + if (misc) { + gf_log (this->name, GF_LOG_WARNING, + "%d subvolumes have unrecoverable errors", misc); + ret = 0; + goto sorry_no_fix; + } - dht_layout_sort_volname (layout); - ret = dht_selfheal_dir_getafix (frame, loc, layout); + dht_layout_sort_volname (layout); + ret = dht_selfheal_dir_getafix (frame, loc, layout); - if (ret == -1) { - gf_log (this->name, GF_LOG_DEBUG, - "not able to form layout for the directory"); - goto sorry_no_fix; - } + if (ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "not able to form layout for the directory"); + goto sorry_no_fix; + } - dht_selfheal_dir_mkdir (frame, loc, layout, 0); + dht_selfheal_dir_mkdir (frame, loc, layout, 0); - return 0; + return 0; sorry_no_fix: - /* TODO: need to put appropriate local->op_errno */ - dht_selfheal_dir_finish (frame, this, ret); + /* TODO: need to put appropriate local->op_errno */ + dht_selfheal_dir_finish (frame, this, ret); - return 0; + return 0; } int dht_selfheal_restore (call_frame_t *frame, dht_selfheal_dir_cbk_t dir_cbk, - loc_t *loc, dht_layout_t *layout) + loc_t *loc, dht_layout_t *layout) { - int ret = 0; - dht_local_t *local = NULL; + int ret = 0; + dht_local_t *local = NULL; + local = frame->local; - local = frame->local; + local->selfheal.dir_cbk = dir_cbk; + local->selfheal.layout = dht_layout_ref (frame->this, layout); - local->selfheal.dir_cbk = dir_cbk; - local->selfheal.layout = layout; + ret = dht_selfheal_dir_mkdir (frame, loc, layout, 1); - ret = dht_selfheal_dir_mkdir (frame, loc, layout, 1); + return ret; +} - return 0; +int +dht_dir_attr_heal (void *data) +{ + call_frame_t *frame = NULL; + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + xlator_t *this = NULL; + dht_conf_t *conf = NULL; + int call_cnt = 0; + int ret = -1; + int i = 0; + + GF_VALIDATE_OR_GOTO ("dht", data, out); + + frame = data; + local = frame->local; + this = frame->this; + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", local, out); + conf = this->private; + GF_VALIDATE_OR_GOTO ("dht", conf, out); + + call_cnt = conf->subvolume_cnt; + + for (i = 0; i < call_cnt; i++) { + subvol = conf->subvolumes[i]; + if (!subvol || (subvol == dht_first_up_subvol (this))) + continue; + ret = syncop_setattr (subvol, &local->loc, &local->stbuf, + (GF_SET_ATTR_UID | GF_SET_ATTR_GID), + NULL, NULL); + if (ret) + gf_log ("dht", GF_LOG_ERROR, "Failed to set uid/gid on" + " %s on %s subvol (%s)", local->loc.path, + subvol->name, strerror (errno)); + } +out: + return 0; +} + +int +dht_dir_attr_heal_done (int ret, call_frame_t *sync_frame, void *data) +{ + DHT_STACK_DESTROY (sync_frame); + return 0; } diff --git a/xlators/cluster/dht/src/dht-shared.c b/xlators/cluster/dht/src/dht-shared.c new file mode 100644 index 000000000..70aac7710 --- /dev/null +++ b/xlators/cluster/dht/src/dht-shared.c @@ -0,0 +1,758 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +/* TODO: add NS locking */ + +#include "statedump.h" +#include "dht-common.h" + +/* TODO: + - use volumename in xattr instead of "dht" + - use NS locks + - handle all cases in self heal layout reconstruction + - complete linkfile selfheal +*/ +struct volume_options options[]; + +void +dht_layout_dump (dht_layout_t *layout, const char *prefix) +{ + + char key[GF_DUMP_MAX_BUF_LEN]; + int i = 0; + + if (!layout) + goto out; + if (!prefix) + goto out; + + gf_proc_dump_build_key(key, prefix, "cnt"); + gf_proc_dump_write(key, "%d", layout->cnt); + gf_proc_dump_build_key(key, prefix, "preset"); + gf_proc_dump_write(key, "%d", layout->preset); + gf_proc_dump_build_key(key, prefix, "gen"); + gf_proc_dump_write(key, "%d", layout->gen); + if (layout->type != IA_INVAL) { + gf_proc_dump_build_key(key, prefix, "inode type"); + gf_proc_dump_write(key, "%d", layout->type); + } + + if (!IA_ISDIR (layout->type)) + goto out; + + for (i = 0; i < layout->cnt; i++) { + gf_proc_dump_build_key(key, prefix,"list[%d].err", i); + gf_proc_dump_write(key, "%d", layout->list[i].err); + gf_proc_dump_build_key(key, prefix,"list[%d].start", i); + gf_proc_dump_write(key, "%u", layout->list[i].start); + gf_proc_dump_build_key(key, prefix,"list[%d].stop", i); + gf_proc_dump_write(key, "%u", layout->list[i].stop); + if (layout->list[i].xlator) { + gf_proc_dump_build_key(key, prefix, + "list[%d].xlator.type", i); + gf_proc_dump_write(key, "%s", + layout->list[i].xlator->type); + gf_proc_dump_build_key(key, prefix, + "list[%d].xlator.name", i); + gf_proc_dump_write(key, "%s", + layout->list[i].xlator->name); + } + } + +out: + return; +} + + +int32_t +dht_priv_dump (xlator_t *this) +{ + char key_prefix[GF_DUMP_MAX_BUF_LEN]; + char key[GF_DUMP_MAX_BUF_LEN]; + int i = 0; + dht_conf_t *conf = NULL; + int ret = -1; + + if (!this) + goto out; + + conf = this->private; + if (!conf) + goto out; + + ret = TRY_LOCK(&conf->subvolume_lock); + if (ret != 0) { + return ret; + } + + gf_proc_dump_add_section("xlator.cluster.dht.%s.priv", this->name); + gf_proc_dump_build_key(key_prefix,"xlator.cluster.dht","%s.priv", + this->name); + gf_proc_dump_write("subvol_cnt","%d", conf->subvolume_cnt); + for (i = 0; i < conf->subvolume_cnt; i++) { + sprintf (key, "subvolumes[%d]", i); + gf_proc_dump_write(key, "%s.%s", conf->subvolumes[i]->type, + conf->subvolumes[i]->name); + if (conf->file_layouts && conf->file_layouts[i]){ + sprintf (key, "file_layouts[%d]", i); + dht_layout_dump(conf->file_layouts[i], key); + } + if (conf->dir_layouts && conf->dir_layouts[i]) { + sprintf (key, "dir_layouts[%d]", i); + dht_layout_dump(conf->dir_layouts[i], key); + } + if (conf->subvolume_status) { + + sprintf (key, "subvolume_status[%d]", i); + gf_proc_dump_write(key, "%d", + (int)conf->subvolume_status[i]); + } + + } + + gf_proc_dump_write("search_unhashed", "%d", conf->search_unhashed); + gf_proc_dump_write("gen", "%d", conf->gen); + gf_proc_dump_write("min_free_disk", "%lf", conf->min_free_disk); + gf_proc_dump_write("min_free_inodes", "%lf", conf->min_free_inodes); + gf_proc_dump_write("disk_unit", "%c", conf->disk_unit); + gf_proc_dump_write("refresh_interval", "%d", conf->refresh_interval); + gf_proc_dump_write("unhashed_sticky_bit", "%d", conf->unhashed_sticky_bit); + if (conf ->du_stats) { + gf_proc_dump_write("du_stats.avail_percent", "%lf", + conf->du_stats->avail_percent); + gf_proc_dump_write("du_stats.avail_space", "%lu", + conf->du_stats->avail_space); + gf_proc_dump_write("du_stats.avail_inodes", "%lf", + conf->du_stats->avail_inodes); + gf_proc_dump_write("du_stats.log", "%lu", conf->du_stats->log); + } + + if (conf->last_stat_fetch.tv_sec) + gf_proc_dump_write("last_stat_fetch", "%s", + ctime(&conf->last_stat_fetch.tv_sec)); + + UNLOCK(&conf->subvolume_lock); + +out: + return ret; +} + +int32_t +dht_inodectx_dump (xlator_t *this, inode_t *inode) +{ + int ret = -1; + dht_layout_t *layout = NULL; + + if (!this) + goto out; + if (!inode) + goto out; + + ret = dht_inode_ctx_layout_get (inode, this, &layout); + + if ((ret != 0) || !layout) + return ret; + + gf_proc_dump_add_section("xlator.cluster.dht.%s.inode", this->name); + dht_layout_dump(layout, "layout"); + +out: + return ret; +} + +void +dht_fini (xlator_t *this) +{ + int i = 0; + dht_conf_t *conf = NULL; + + GF_VALIDATE_OR_GOTO ("dht", this, out); + + conf = this->private; + this->private = NULL; + if (conf) { + if (conf->file_layouts) { + for (i = 0; i < conf->subvolume_cnt; i++) { + GF_FREE (conf->file_layouts[i]); + } + GF_FREE (conf->file_layouts); + } + + GF_FREE (conf->subvolumes); + + GF_FREE (conf->subvolume_status); + + GF_FREE (conf); + } +out: + return; +} + +int32_t +mem_acct_init (xlator_t *this) +{ + int ret = -1; + + GF_VALIDATE_OR_GOTO ("dht", this, out); + + ret = xlator_mem_acct_init (this, gf_dht_mt_end + 1); + + if (ret != 0) { + gf_log (this->name, GF_LOG_ERROR, "Memory accounting init" + "failed"); + return ret; + } +out: + return ret; +} + + +int +dht_parse_decommissioned_bricks (xlator_t *this, dht_conf_t *conf, + const char *bricks) +{ + int i = 0; + int ret = -1; + char *tmpstr = NULL; + char *dup_brick = NULL; + char *node = NULL; + + if (!conf || !bricks) + goto out; + + dup_brick = gf_strdup (bricks); + node = strtok_r (dup_brick, ",", &tmpstr); + while (node) { + for (i = 0; i < conf->subvolume_cnt; i++) { + if (!strcmp (conf->subvolumes[i]->name, node)) { + conf->decommissioned_bricks[i] = + conf->subvolumes[i]; + conf->decommission_subvols_cnt++; + gf_log (this->name, GF_LOG_INFO, + "decommissioning subvolume %s", + conf->subvolumes[i]->name); + break; + } + } + if (i == conf->subvolume_cnt) { + /* Wrong node given. */ + goto out; + } + node = strtok_r (NULL, ",", &tmpstr); + } + + ret = 0; + conf->decommission_in_progress = 1; +out: + GF_FREE (dup_brick); + + return ret; +} + + +int +dht_decommissioned_remove (xlator_t *this, dht_conf_t *conf) +{ + int i = 0; + int ret = -1; + + if (!conf) + goto out; + + for (i = 0; i < conf->subvolume_cnt; i++) { + if (conf->decommissioned_bricks[i]) { + conf->decommissioned_bricks[i] = NULL; + conf->decommission_subvols_cnt--; + } + } + + ret = 0; +out: + + return ret; +} +void +dht_init_regex (xlator_t *this, dict_t *odict, char *name, + regex_t *re, gf_boolean_t *re_valid) +{ + char *temp_str; + + if (dict_get_str (odict, name, &temp_str) != 0) { + if (strcmp(name,"rsync-hash-regex")) { + return; + } + temp_str = "^\\.(.+)\\.[^.]+$"; + } + + if (*re_valid) { + regfree(re); + *re_valid = _gf_false; + } + + if (!strcmp(temp_str,"none")) { + return; + } + + if (regcomp(re,temp_str,REG_EXTENDED) == 0) { + gf_log (this->name, GF_LOG_INFO, + "using regex %s = %s", name, temp_str); + *re_valid = _gf_true; + } + else { + gf_log (this->name, GF_LOG_WARNING, + "compiling regex %s failed", temp_str); + } +} + +int +dht_reconfigure (xlator_t *this, dict_t *options) +{ + dht_conf_t *conf = NULL; + char *temp_str = NULL; + gf_boolean_t search_unhashed; + int ret = -1; + + GF_VALIDATE_OR_GOTO ("dht", this, out); + GF_VALIDATE_OR_GOTO ("dht", options, out); + + conf = this->private; + if (!conf) + return 0; + + if (dict_get_str (options, "lookup-unhashed", &temp_str) == 0) { + /* If option is not "auto", other options _should_ be boolean*/ + if (strcasecmp (temp_str, "auto")) { + if (!gf_string2boolean (temp_str, &search_unhashed)) { + gf_log(this->name, GF_LOG_DEBUG, "Reconfigure:" + " lookup-unhashed reconfigured (%s)", + temp_str); + conf->search_unhashed = search_unhashed; + } else { + gf_log(this->name, GF_LOG_ERROR, "Reconfigure:" + " lookup-unhashed should be boolean," + " not (%s), defaulting to (%d)", + temp_str, conf->search_unhashed); + //return -1; + ret = -1; + goto out; + } + } else { + gf_log(this->name, GF_LOG_DEBUG, "Reconfigure:" + " lookup-unhashed reconfigured auto "); + conf->search_unhashed = GF_DHT_LOOKUP_UNHASHED_AUTO; + } + } + + GF_OPTION_RECONF ("min-free-disk", conf->min_free_disk, options, + percent_or_size, out); + /* option can be any one of percent or bytes */ + conf->disk_unit = 0; + if (conf->min_free_disk < 100.0) + conf->disk_unit = 'p'; + + GF_OPTION_RECONF ("min-free-inodes", conf->min_free_inodes, options, + percent, out); + + GF_OPTION_RECONF ("directory-layout-spread", conf->dir_spread_cnt, + options, uint32, out); + + GF_OPTION_RECONF ("readdir-optimize", conf->readdir_optimize, options, + bool, out); + if (conf->defrag) { + GF_OPTION_RECONF ("rebalance-stats", conf->defrag->stats, + options, bool, out); + } + + if (dict_get_str (options, "decommissioned-bricks", &temp_str) == 0) { + ret = dht_parse_decommissioned_bricks (this, conf, temp_str); + if (ret == -1) + goto out; + } else { + ret = dht_decommissioned_remove (this, conf); + if (ret == -1) + goto out; + } + + dht_init_regex (this, options, "rsync-hash-regex", + &conf->rsync_regex, &conf->rsync_regex_valid); + dht_init_regex (this, options, "extra-hash-regex", + &conf->extra_regex, &conf->extra_regex_valid); + + ret = 0; +out: + return ret; +} + +static int +gf_defrag_pattern_list_fill (xlator_t *this, gf_defrag_info_t *defrag, char *data) +{ + int ret = -1; + char *tmp_str = NULL; + char *tmp_str1 = NULL; + char *dup_str = NULL; + char *num = NULL; + char *pattern_str = NULL; + char *pattern = NULL; + gf_defrag_pattern_list_t *temp_list = NULL; + gf_defrag_pattern_list_t *pattern_list = NULL; + + if (!this || !defrag || !data) + goto out; + + /* Get the pattern for pattern list. "pattern:<optional-size>" + * eg: *avi, *pdf:10MB, *:1TB + */ + pattern_str = strtok_r (data, ",", &tmp_str); + while (pattern_str) { + dup_str = gf_strdup (pattern_str); + pattern_list = GF_CALLOC (1, sizeof (gf_defrag_pattern_list_t), + 1); + if (!pattern_list) { + goto out; + } + pattern = strtok_r (dup_str, ":", &tmp_str1); + num = strtok_r (NULL, ":", &tmp_str1); + if (!pattern) + goto out; + if (!num) { + if (gf_string2bytesize(pattern, &pattern_list->size) + == 0) { + pattern = "*"; + } + } else if (gf_string2bytesize (num, &pattern_list->size) != 0) { + gf_log (this->name, GF_LOG_ERROR, + "invalid number format \"%s\"", num); + goto out; + } + memcpy (pattern_list->path_pattern, pattern, strlen (dup_str)); + + if (!defrag->defrag_pattern) + temp_list = NULL; + else + temp_list = defrag->defrag_pattern; + + pattern_list->next = temp_list; + + defrag->defrag_pattern = pattern_list; + pattern_list = NULL; + + GF_FREE (dup_str); + dup_str = NULL; + + pattern_str = strtok_r (NULL, ",", &tmp_str); + } + + ret = 0; +out: + if (ret) + GF_FREE (pattern_list); + GF_FREE (dup_str); + + return ret; +} + +int +dht_init (xlator_t *this) +{ + dht_conf_t *conf = NULL; + char *temp_str = NULL; + int ret = -1; + int i = 0; + gf_defrag_info_t *defrag = NULL; + int cmd = 0; + char *node_uuid = NULL; + + + GF_VALIDATE_OR_GOTO ("dht", this, err); + + if (!this->children) { + gf_log (this->name, GF_LOG_CRITICAL, + "Distribute needs more than one subvolume"); + return -1; + } + + if (!this->parents) { + gf_log (this->name, GF_LOG_WARNING, + "dangling volume. check volfile"); + } + + conf = GF_CALLOC (1, sizeof (*conf), gf_dht_mt_dht_conf_t); + if (!conf) { + goto err; + } + + ret = dict_get_int32 (this->options, "rebalance-cmd", &cmd); + + if (cmd) { + defrag = GF_CALLOC (1, sizeof (gf_defrag_info_t), + gf_defrag_info_mt); + + GF_VALIDATE_OR_GOTO (this->name, defrag, err); + + LOCK_INIT (&defrag->lock); + + defrag->is_exiting = 0; + + conf->defrag = defrag; + + ret = dict_get_str (this->options, "node-uuid", &node_uuid); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "node-uuid not " + "specified"); + goto err; + } + + if (uuid_parse (node_uuid, defrag->node_uuid)) { + gf_log (this->name, GF_LOG_ERROR, "Cannot parse " + "glusterd node uuid"); + goto err; + } + + defrag->cmd = cmd; + + defrag->stats = _gf_false; + } + + conf->search_unhashed = GF_DHT_LOOKUP_UNHASHED_ON; + if (dict_get_str (this->options, "lookup-unhashed", &temp_str) == 0) { + /* If option is not "auto", other options _should_ be boolean */ + if (strcasecmp (temp_str, "auto")) + gf_string2boolean (temp_str, &conf->search_unhashed); + else + conf->search_unhashed = GF_DHT_LOOKUP_UNHASHED_AUTO; + } + + GF_OPTION_INIT ("unhashed-sticky-bit", conf->unhashed_sticky_bit, bool, + err); + + GF_OPTION_INIT ("use-readdirp", conf->use_readdirp, bool, err); + + GF_OPTION_INIT ("min-free-disk", conf->min_free_disk, percent_or_size, + err); + + GF_OPTION_INIT ("min-free-inodes", conf->min_free_inodes, percent, + err); + + conf->dir_spread_cnt = conf->subvolume_cnt; + GF_OPTION_INIT ("directory-layout-spread", conf->dir_spread_cnt, + uint32, err); + + GF_OPTION_INIT ("assert-no-child-down", conf->assert_no_child_down, + bool, err); + + GF_OPTION_INIT ("readdir-optimize", conf->readdir_optimize, bool, err); + + if (defrag) { + GF_OPTION_INIT ("rebalance-stats", defrag->stats, bool, err); + if (dict_get_str (this->options, "rebalance-filter", &temp_str) + == 0) { + if (gf_defrag_pattern_list_fill (this, defrag, temp_str) + == -1) { + gf_log (this->name, GF_LOG_ERROR, "Cannot parse" + " rebalance-filter (%s)", temp_str); + goto err; + } + } + } + + /* option can be any one of percent or bytes */ + conf->disk_unit = 0; + if (conf->min_free_disk < 100) + conf->disk_unit = 'p'; + + ret = dht_init_subvolumes (this, conf); + if (ret == -1) { + goto err; + } + + if (dict_get_str (this->options, "decommissioned-bricks", &temp_str) == 0) { + ret = dht_parse_decommissioned_bricks (this, conf, temp_str); + if (ret == -1) + goto err; + } + + dht_init_regex (this, this->options, "rsync-hash-regex", + &conf->rsync_regex, &conf->rsync_regex_valid); + dht_init_regex (this, this->options, "extra-hash-regex", + &conf->extra_regex, &conf->extra_regex_valid); + + ret = dht_layouts_init (this, conf); + if (ret == -1) { + goto err; + } + + LOCK_INIT (&conf->subvolume_lock); + LOCK_INIT (&conf->layout_lock); + + conf->gen = 1; + + this->local_pool = mem_pool_new (dht_local_t, 512); + if (!this->local_pool) { + gf_log (this->name, GF_LOG_ERROR, + "failed to create local_t's memory pool"); + goto err; + } + + GF_OPTION_INIT ("xattr-name", conf->xattr_name, str, err); + gf_asprintf (&conf->link_xattr_name, "%s.linkto", conf->xattr_name); + gf_asprintf (&conf->wild_xattr_name, "%s*", conf->xattr_name); + if (!conf->link_xattr_name || !conf->wild_xattr_name) { + goto err; + } + + this->private = conf; + + return 0; + +err: + if (conf) { + if (conf->file_layouts) { + for (i = 0; i < conf->subvolume_cnt; i++) { + GF_FREE (conf->file_layouts[i]); + } + GF_FREE (conf->file_layouts); + } + + GF_FREE (conf->subvolumes); + + GF_FREE (conf->subvolume_status); + + GF_FREE (conf->du_stats); + + GF_FREE (conf->defrag); + + GF_FREE (conf->xattr_name); + GF_FREE (conf->link_xattr_name); + GF_FREE (conf->wild_xattr_name); + + GF_FREE (conf); + } + + return -1; +} + + +struct volume_options options[] = { + { .key = {"lookup-unhashed"}, + .value = {"auto", "yes", "no", "enable", "disable", "1", "0", + "on", "off"}, + .type = GF_OPTION_TYPE_STR, + .default_value = "on", + .description = "This option if set to ON, does a lookup through " + "all the sub-volumes, in case a lookup didn't return any result " + "from the hash subvolume. If set to OFF, it does not do a lookup " + "on the remaining subvolumes." + }, + { .key = {"min-free-disk"}, + .type = GF_OPTION_TYPE_PERCENT_OR_SIZET, + .default_value = "10%", + .description = "Percentage/Size of disk space, after which the " + "process starts balancing out the cluster, and logs will appear " + "in log files", + }, + { .key = {"min-free-inodes"}, + .type = GF_OPTION_TYPE_PERCENT, + .default_value = "5%", + .description = "after system has only N% of inodes, warnings " + "starts to appear in log files", + }, + { .key = {"unhashed-sticky-bit"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + }, + { .key = {"use-readdirp"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "This option if set to ON, forces the use of " + "readdirp, and hence also displays the stats of the files." + }, + { .key = {"assert-no-child-down"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + .description = "This option if set to ON, in the event of " + "CHILD_DOWN, will call exit." + }, + { .key = {"directory-layout-spread"}, + .type = GF_OPTION_TYPE_INT, + .min = 1, + .validate = GF_OPT_VALIDATE_MIN, + .description = "Specifies the directory layout spread." + }, + { .key = {"decommissioned-bricks"}, + .type = GF_OPTION_TYPE_ANY, + .description = "This option if set to ON, decommissions " + "the brick, so that no new data is allowed to be created " + "on that brick." + }, + { .key = {"rebalance-cmd"}, + .type = GF_OPTION_TYPE_INT, + }, + { .key = {"node-uuid"}, + .type = GF_OPTION_TYPE_STR, + }, + { .key = {"rebalance-stats"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + .description = "This option if set to ON displays and logs the " + " time taken for migration of each file, during the rebalance " + "process. If set to OFF, the rebalance logs will only display the " + "time spent in each directory." + }, + { .key = {"readdir-optimize"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + .description = "This option if set to ON enables the optimization " + "that allows DHT to requests non-first subvolumes to filter out " + "directory entries." + }, + { .key = {"rsync-hash-regex"}, + .type = GF_OPTION_TYPE_STR, + /* Setting a default here doesn't work. See dht_init_regex. */ + .description = "Regular expression for stripping temporary-file " + "suffix and prefix used by rsync, to prevent relocation when the " + "file is renamed." + }, + { .key = {"extra-hash-regex"}, + .type = GF_OPTION_TYPE_STR, + /* Setting a default here doesn't work. See dht_init_regex. */ + .description = "Regular expression for stripping temporary-file " + "suffix and prefix used by an application, to prevent relocation when " + "the file is renamed." + }, + { .key = {"rebalance-filter"}, + .type = GF_OPTION_TYPE_STR, + }, + + { .key = {"xattr-name"}, + .type = GF_OPTION_TYPE_STR, + .default_value = "trusted.glusterfs.dht", + .description = "Base for extended attributes used by this " + "translator instance, to avoid conflicts with others above or " + "below it." + }, + + /* NUFA option */ + { .key = {"local-volume-name"}, + .type = GF_OPTION_TYPE_XLATOR + }, + + /* switch option */ + { .key = {"pattern.switch.case"}, + .type = GF_OPTION_TYPE_ANY + }, + + { .key = {NULL} }, +}; diff --git a/xlators/cluster/dht/src/dht.c b/xlators/cluster/dht/src/dht.c index 21f468b85..fc0ca2f77 100644 --- a/xlators/cluster/dht/src/dht.c +++ b/xlators/cluster/dht/src/dht.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ @@ -23,230 +14,76 @@ #include "config.h" #endif -/* TODO: add NS locking */ - -#include "dht-common.c" - -/* TODO: - - use volumename in xattr instead of "dht" - - use NS locks - - handle all cases in self heal layout reconstruction - - complete linkfile selfheal -*/ - - - -int -notify (xlator_t *this, int event, void *data, ...) -{ - int ret = -1; - - ret = dht_notify (this, event, data); - - return ret; -} - -void -fini (xlator_t *this) -{ - int i = 0; - dht_conf_t *conf = NULL; - - conf = this->private; - - if (conf) { - if (conf->file_layouts) { - for (i = 0; i < conf->subvolume_cnt; i++) { - FREE (conf->file_layouts[i]); - } - FREE (conf->file_layouts); - } - - if (conf->default_dir_layout) - FREE (conf->default_dir_layout); - - if (conf->subvolumes) - FREE (conf->subvolumes); - - if (conf->subvolume_status) - FREE (conf->subvolume_status); - - FREE (conf); - } - - return; -} - -int -init (xlator_t *this) -{ - dht_conf_t *conf = NULL; - char *lookup_unhashed_str = NULL; - int ret = -1; - int i = 0; - - if (!this->children) { - gf_log (this->name, GF_LOG_CRITICAL, - "Distribute needs more than one subvolume"); - return -1; - } - - if (!this->parents) { - gf_log (this->name, GF_LOG_WARNING, - "dangling volume. check volfile"); - } - - conf = CALLOC (1, sizeof (*conf)); - if (!conf) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - conf->search_unhashed = 0; - - if (dict_get_str (this->options, "lookup-unhashed", - &lookup_unhashed_str) == 0) { - gf_string2boolean (lookup_unhashed_str, - &conf->search_unhashed); - } - - conf->unhashed_sticky_bit = 0; - - if (dict_get_str (this->options, "unhashed-sticky-bit", - &lookup_unhashed_str) == 0) { - gf_string2boolean (lookup_unhashed_str, - &conf->unhashed_sticky_bit); - } - - conf->min_free_disk = 10; - - if (dict_get_str (this->options, "min-free-disk", - &lookup_unhashed_str) == 0) { - gf_string2percent (lookup_unhashed_str, - &conf->min_free_disk); - } - - - ret = dht_init_subvolumes (this, conf); - if (ret == -1) { - goto err; - } - - ret = dht_layouts_init (this, conf); - if (ret == -1) { - goto err; - } - - conf->du_stats = CALLOC (conf->subvolume_cnt, sizeof (dht_du_t)); - if (!conf->du_stats) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - LOCK_INIT (&conf->subvolume_lock); - - conf->gen = 1; - - this->private = conf; - - return 0; - -err: - if (conf) { - if (conf->file_layouts) { - for (i = 0; i < conf->subvolume_cnt; i++) { - FREE (conf->file_layouts[i]); - } - FREE (conf->file_layouts); - } - - if (conf->default_dir_layout) - FREE (conf->default_dir_layout); - - if (conf->subvolumes) - FREE (conf->subvolumes); - - if (conf->subvolume_status) - FREE (conf->subvolume_status); - - if (conf->du_stats) - FREE (conf->du_stats); - - FREE (conf); - } - - return -1; -} +#include "statedump.h" +#include "dht-common.h" +class_methods_t class_methods = { + .init = dht_init, + .fini = dht_fini, + .reconfigure = dht_reconfigure, + .notify = dht_notify +}; struct xlator_fops fops = { - .lookup = dht_lookup, - .mknod = dht_mknod, - .create = dht_create, - - .stat = dht_stat, - .chmod = dht_chmod, - .chown = dht_chown, - .fchown = dht_fchown, - .fchmod = dht_fchmod, - .fstat = dht_fstat, - .utimens = dht_utimens, - .truncate = dht_truncate, - .ftruncate = dht_ftruncate, - .access = dht_access, - .readlink = dht_readlink, - .setxattr = dht_setxattr, - .getxattr = dht_getxattr, - .removexattr = dht_removexattr, - .open = dht_open, - .readv = dht_readv, - .writev = dht_writev, - .flush = dht_flush, - .fsync = dht_fsync, - .statfs = dht_statfs, - .lk = dht_lk, - .opendir = dht_opendir, - .readdir = dht_readdir, - .fsyncdir = dht_fsyncdir, - .symlink = dht_symlink, - .unlink = dht_unlink, - .link = dht_link, - .mkdir = dht_mkdir, - .rmdir = dht_rmdir, - .rename = dht_rename, - .inodelk = dht_inodelk, - .finodelk = dht_finodelk, - .entrylk = dht_entrylk, - .fentrylk = dht_fentrylk, - .xattrop = dht_xattrop, - .fxattrop = dht_fxattrop, -#if 0 - .setdents = dht_setdents, - .getdents = dht_getdents, - .checksum = dht_checksum, -#endif + .lookup = dht_lookup, + .mknod = dht_mknod, + .create = dht_create, + + .open = dht_open, + .statfs = dht_statfs, + .opendir = dht_opendir, + .readdir = dht_readdir, + .readdirp = dht_readdirp, + .fsyncdir = dht_fsyncdir, + .symlink = dht_symlink, + .unlink = dht_unlink, + .link = dht_link, + .mkdir = dht_mkdir, + .rmdir = dht_rmdir, + .rename = dht_rename, + .entrylk = dht_entrylk, + .fentrylk = dht_fentrylk, + + /* Inode read operations */ + .stat = dht_stat, + .fstat = dht_fstat, + .access = dht_access, + .readlink = dht_readlink, + .getxattr = dht_getxattr, + .fgetxattr = dht_fgetxattr, + .readv = dht_readv, + .flush = dht_flush, + .fsync = dht_fsync, + .inodelk = dht_inodelk, + .finodelk = dht_finodelk, + .lk = dht_lk, + + /* Inode write operations */ + .fremovexattr = dht_fremovexattr, + .removexattr = dht_removexattr, + .setxattr = dht_setxattr, + .fsetxattr = dht_fsetxattr, + .truncate = dht_truncate, + .ftruncate = dht_ftruncate, + .writev = dht_writev, + .xattrop = dht_xattrop, + .fxattrop = dht_fxattrop, + .setattr = dht_setattr, + .fsetattr = dht_fsetattr, + .fallocate = dht_fallocate, + .discard = dht_discard, + .zerofill = dht_zerofill, }; - -struct xlator_mops mops = { +struct xlator_dumpops dumpops = { + .priv = dht_priv_dump, + .inodectx = dht_inodectx_dump, }; struct xlator_cbks cbks = { -// .release = dht_release, +// .release = dht_release, // .releasedir = dht_releasedir, - .forget = dht_forget -}; - - -struct volume_options options[] = { - { .key = {"lookup-unhashed"}, - .type = GF_OPTION_TYPE_BOOL - }, - { .key = {"min-free-disk"}, - .type = GF_OPTION_TYPE_PERCENT - }, - { .key = {NULL} }, + .forget = dht_forget }; +; diff --git a/xlators/cluster/dht/src/nufa.c b/xlators/cluster/dht/src/nufa.c index a61daf879..e934acdf0 100644 --- a/xlators/cluster/dht/src/nufa.c +++ b/xlators/cluster/dht/src/nufa.c @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ @@ -23,16 +14,18 @@ #include "config.h" #endif -#include "dht-common.c" +#include "dht-common.h" /* TODO: all 'TODO's in dht.c holds good */ -int +extern struct volume_options options[]; + +int nufa_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf, dict_t *xattr) + int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent) { - dht_layout_t *layout = NULL; xlator_t *subvol = NULL; char is_linkfile = 0; char is_dir = 0; @@ -41,8 +34,8 @@ nufa_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, loc_t *loc = NULL; int i = 0; call_frame_t *prev = NULL; - int call_cnt = 0; - + int call_cnt = 0; + int ret = 0; conf = this->private; @@ -50,58 +43,52 @@ nufa_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, local = frame->local; loc = &local->loc; - if (ENTRY_MISSING (op_ret, op_errno)) { - if (conf->search_unhashed) { - local->op_errno = ENOENT; - dht_lookup_everywhere (frame, this, loc); - return 0; - } - } + if (ENTRY_MISSING (op_ret, op_errno)) { + if (conf->search_unhashed) { + local->op_errno = ENOENT; + dht_lookup_everywhere (frame, this, loc); + return 0; + } + } if (op_ret == -1) goto out; - is_linkfile = check_is_linkfile (inode, stbuf, xattr); + is_linkfile = check_is_linkfile (inode, stbuf, xattr, + conf->link_xattr_name); is_dir = check_is_dir (inode, stbuf, xattr); if (!is_dir && !is_linkfile) { /* non-directory and not a linkfile */ + ret = dht_layout_preset (this, prev->this, inode); + if (ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "could not set pre-set layout for subvol %s", + prev->this->name); + op_ret = -1; + op_errno = EINVAL; + goto err; + } - dht_itransform (this, prev->this, stbuf->st_ino, - &stbuf->st_ino); - - layout = dht_layout_for_subvol (this, prev->this); - if (!layout) { - gf_log (this->name, GF_LOG_DEBUG, - "no pre-set layout for subvolume %s", - prev->this->name); - op_ret = -1; - op_errno = EINVAL; - goto err; - } - - inode_ctx_put (inode, this, (uint64_t)(long)layout); goto out; } if (is_dir) { call_cnt = conf->subvolume_cnt; - local->call_cnt = call_cnt; + local->call_cnt = call_cnt; local->inode = inode_ref (inode); local->xattr = dict_ref (xattr); - local->op_ret = 0; - local->op_errno = 0; + local->op_ret = 0; + local->op_errno = 0; - local->layout = dht_layout_new (this, conf->subvolume_cnt); - if (!local->layout) { - op_ret = -1; - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_DEBUG, - "memory allocation failed :("); - goto err; - } + local->layout = dht_layout_new (this, conf->subvolume_cnt); + if (!local->layout) { + op_ret = -1; + op_errno = ENOMEM; + goto err; + } for (i = 0; i < call_cnt; i++) { STACK_WIND (frame, dht_lookup_dir_cbk, @@ -118,51 +105,52 @@ nufa_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, gf_log (this->name, GF_LOG_DEBUG, "linkfile not having link subvolume. path=%s", loc->path); - dht_lookup_everywhere (frame, this, loc); - return 0; + dht_lookup_everywhere (frame, this, loc); + return 0; } - STACK_WIND (frame, dht_lookup_linkfile_cbk, - subvol, subvol->fops->lookup, - &local->loc, local->xattr_req); + STACK_WIND (frame, dht_lookup_linkfile_cbk, + subvol, subvol->fops->lookup, + &local->loc, local->xattr_req); } return 0; out: - if (!local->hashed_subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume in layout for path=%s", - local->loc.path); - op_errno = EINVAL; - goto err; - } - - STACK_WIND (frame, dht_lookup_cbk, - local->hashed_subvol, local->hashed_subvol->fops->lookup, - &local->loc, local->xattr_req); - - return 0; - - err: - DHT_STACK_UNWIND (frame, op_ret, op_errno, inode, stbuf, xattr); + if (!local->hashed_subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s", + local->loc.path); + local->op_errno = ENOENT; + dht_lookup_everywhere (frame, this, loc); + return 0; + } + + STACK_WIND (frame, dht_lookup_cbk, + local->hashed_subvol, local->hashed_subvol->fops->lookup, + &local->loc, local->xattr_req); + + return 0; + +err: + DHT_STACK_UNWIND (lookup, frame, op_ret, op_errno, + inode, stbuf, xattr, postparent); return 0; } int nufa_lookup (call_frame_t *frame, xlator_t *this, - loc_t *loc, dict_t *xattr_req) + loc_t *loc, dict_t *xattr_req) { xlator_t *hashed_subvol = NULL; - xlator_t *cached_subvol = NULL; xlator_t *subvol = NULL; dht_local_t *local = NULL; - dht_conf_t *conf = NULL; + dht_conf_t *conf = NULL; int ret = -1; int op_errno = -1; - dht_layout_t *layout = NULL; - int i = 0; - int call_cnt = 0; + dht_layout_t *layout = NULL; + int i = 0; + int call_cnt = 0; VALIDATE_OR_GOTO (frame, err); @@ -171,40 +159,26 @@ nufa_lookup (call_frame_t *frame, xlator_t *this, VALIDATE_OR_GOTO (loc->inode, err); VALIDATE_OR_GOTO (loc->path, err); - conf = this->private; - - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } + conf = this->private; - ret = loc_dup (loc, &local->loc); - if (ret == -1) { - op_errno = errno; - gf_log (this->name, GF_LOG_DEBUG, - "copying location failed for path=%s", - loc->path); + local = dht_local_init (frame, loc, NULL, GF_FOP_LOOKUP); + if (!local) { + op_errno = ENOMEM; goto err; } - if (xattr_req) { - local->xattr_req = dict_ref (xattr_req); - } else { - local->xattr_req = dict_new (); - } + if (xattr_req) { + local->xattr_req = dict_ref (xattr_req); + } else { + local->xattr_req = dict_new (); + } - hashed_subvol = dht_subvol_get_hashed (this, &local->loc); - cached_subvol = dht_subvol_get_cached (this, local->loc.inode); - - local->cached_subvol = cached_subvol; - local->hashed_subvol = hashed_subvol; + hashed_subvol = dht_subvol_get_hashed (this, &local->loc); - if (is_revalidate (loc)) { - layout = dht_layout_get (this, loc->inode); + local->hashed_subvol = hashed_subvol; + if (is_revalidate (loc)) { + layout = local->layout; if (!layout) { gf_log (this->name, GF_LOG_DEBUG, "revalidate without cache. path=%s", @@ -213,514 +187,490 @@ nufa_lookup (call_frame_t *frame, xlator_t *this, goto err; } - if (layout->gen && (layout->gen < conf->gen)) { - gf_log (this->name, GF_LOG_DEBUG, - "incomplete layout failure for path=%s", - loc->path); - op_errno = ESTALE; - goto err; - } - - local->inode = inode_ref (loc->inode); - local->st_ino = loc->inode->ino; - - local->call_cnt = layout->cnt; - call_cnt = local->call_cnt; - - /* NOTE: we don't require 'trusted.glusterfs.dht.linkto' attribute, - * revalidates directly go to the cached-subvolume. - */ - ret = dict_set_uint32 (local->xattr_req, - "trusted.glusterfs.dht", 4 * 4); - - for (i = 0; i < layout->cnt; i++) { - subvol = layout->list[i].xlator; - - STACK_WIND (frame, dht_revalidate_cbk, - subvol, subvol->fops->lookup, - loc, local->xattr_req); - - if (!--call_cnt) - break; - } - } else { - ret = dict_set_uint32 (local->xattr_req, - "trusted.glusterfs.dht", 4 * 4); - - ret = dict_set_uint32 (local->xattr_req, - "trusted.glusterfs.dht.linkto", 256); - - /* Send it to only local volume */ - STACK_WIND (frame, nufa_local_lookup_cbk, - conf->local_volume, - conf->local_volume->fops->lookup, - loc, local->xattr_req); - } + if (layout->gen && (layout->gen < conf->gen)) { + gf_log (this->name, GF_LOG_DEBUG, + "incomplete layout failure for path=%s", + loc->path); + dht_layout_unref (this, local->layout); + goto do_fresh_lookup; + } + + local->inode = inode_ref (loc->inode); + + local->call_cnt = layout->cnt; + call_cnt = local->call_cnt; + + /* NOTE: we don't require 'trusted.glusterfs.dht.linkto' attribute, + * revalidates directly go to the cached-subvolume. + */ + ret = dict_set_uint32 (local->xattr_req, + conf->xattr_name, 4 * 4); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to set dict value."); + op_errno = -1; + goto err; + } + + for (i = 0; i < layout->cnt; i++) { + subvol = layout->list[i].xlator; + + STACK_WIND (frame, dht_revalidate_cbk, + subvol, subvol->fops->lookup, + loc, local->xattr_req); + + if (!--call_cnt) + break; + } + } else { + do_fresh_lookup: + ret = dict_set_uint32 (local->xattr_req, + conf->xattr_name, 4 * 4); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to set dict value."); + op_errno = -1; + goto err; + } + + ret = dict_set_uint32 (local->xattr_req, + conf->link_xattr_name, 256); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to set dict value."); + op_errno = -1; + goto err; + } + + /* Send it to only local volume */ + STACK_WIND (frame, nufa_local_lookup_cbk, + (xlator_t *)conf->private, + ((xlator_t *)conf->private)->fops->lookup, + loc, local->xattr_req); + } return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL); - return 0; + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (lookup, frame, -1, op_errno, NULL, NULL, NULL, + NULL); + return 0; } int -nufa_create_linkfile_create_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf) +nufa_create_linkfile_create_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - dht_local_t *local = NULL; - call_frame_t *prev = NULL; - dht_conf_t *conf = NULL; - - local = frame->local; - prev = cookie; - conf = this->private; - - if (op_ret == -1) - goto err; - - STACK_WIND (frame, dht_create_cbk, - local->cached_subvol, local->cached_subvol->fops->create, - &local->loc, local->flags, local->mode, local->fd); - - return 0; - - err: - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL); - return 0; + dht_local_t *local = NULL; + + local = frame->local; + + if (op_ret == -1) + goto err; + + STACK_WIND (frame, dht_create_cbk, + local->cached_subvol, local->cached_subvol->fops->create, + &local->loc, local->flags, local->mode, local->umask, + local->fd, local->params); + + return 0; + +err: + DHT_STACK_UNWIND (create, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL, NULL); + return 0; } int nufa_create (call_frame_t *frame, xlator_t *this, - loc_t *loc, int32_t flags, mode_t mode, fd_t *fd) + loc_t *loc, int32_t flags, mode_t mode, + mode_t umask, fd_t *fd, dict_t *params) { - dht_local_t *local = NULL; - dht_conf_t *conf = NULL; - xlator_t *subvol = NULL; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; + xlator_t *subvol = NULL; xlator_t *avail_subvol = NULL; - int op_errno = -1; - int ret = -1; + int op_errno = -1; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); - conf = this->private; + conf = this->private; dht_get_du_info (frame, this, loc); - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - subvol = dht_subvol_get_hashed (this, loc); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume in layout for path=%s", - loc->path); - op_errno = ENOENT; - goto err; - } - - avail_subvol = conf->local_volume; - if (dht_is_subvol_filled (this, conf->local_volume)) { - avail_subvol = - dht_free_disk_available_subvol (this, - conf->local_volume); + local = dht_local_init (frame, loc, fd, GF_FOP_CREATE); + if (!local) { + op_errno = ENOMEM; + goto err; } - + + subvol = dht_subvol_get_hashed (this, loc); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s", + loc->path); + op_errno = ENOENT; + goto err; + } + + avail_subvol = conf->private; + if (dht_is_subvol_filled (this, (xlator_t *)conf->private)) { + avail_subvol = + dht_free_disk_available_subvol (this, + (xlator_t *)conf->private, + local); + } + if (subvol != avail_subvol) { /* create a link file instead of actual file */ - ret = loc_copy (&local->loc, loc); - if (ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } - - local->fd = fd_ref (fd); + local->params = dict_ref (params); local->mode = mode; local->flags = flags; - + local->umask = umask; local->cached_subvol = avail_subvol; - dht_linkfile_create (frame, - nufa_create_linkfile_create_cbk, - avail_subvol, subvol, loc); + dht_linkfile_create (frame, nufa_create_linkfile_create_cbk, + this, avail_subvol, subvol, loc); return 0; } gf_log (this->name, GF_LOG_TRACE, "creating %s on %s", loc->path, subvol->name); - + STACK_WIND (frame, dht_create_cbk, subvol, subvol->fops->create, - loc, flags, mode, fd); - + loc, flags, mode, umask, fd, params); + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (create, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL, NULL); - return 0; + return 0; } int nufa_mknod_linkfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, - inode_t *inode, struct stat *stbuf) + int op_ret, int op_errno, inode_t *inode, + struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - dht_local_t *local = NULL; - call_frame_t *prev = NULL; - dht_conf_t *conf = NULL; - - local = frame->local; - prev = cookie; - conf = this->private; - - if (op_ret >= 0) { - STACK_WIND (frame, dht_newfile_cbk, - local->cached_subvol, - local->cached_subvol->fops->mknod, - &local->loc, local->mode, local->rdev); - - return 0; - } - - DHT_STACK_UNWIND (frame, op_ret, op_errno, inode, stbuf); - return 0; + dht_local_t *local = NULL; + + local = frame->local; + if (!local || !local->cached_subvol) { + op_errno = EINVAL; + op_ret = -1; + goto err; + } + + if (op_ret >= 0) { + STACK_WIND_COOKIE (frame, dht_newfile_cbk, + (void *)local->cached_subvol, local->cached_subvol, + local->cached_subvol->fops->mknod, + &local->loc, local->mode, local->rdev, + local->umask, local->params); + + return 0; + } +err: + WIPE (postparent); + WIPE (preparent); + + DHT_STACK_UNWIND (link, frame, op_ret, op_errno, + inode, stbuf, preparent, postparent, xdata); + return 0; } int nufa_mknod (call_frame_t *frame, xlator_t *this, - loc_t *loc, mode_t mode, dev_t rdev) + loc_t *loc, mode_t mode, dev_t rdev, mode_t umask, dict_t *params) { - dht_local_t *local = NULL; - dht_conf_t *conf = NULL; - xlator_t *subvol = NULL; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; + xlator_t *subvol = NULL; xlator_t *avail_subvol = NULL; - int op_errno = -1; - int ret = -1; + int op_errno = -1; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); - conf = this->private; + conf = this->private; dht_get_du_info (frame, this, loc); - local = dht_local_init (frame); - if (!local) { - op_errno = ENOMEM; - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; - } - - subvol = dht_subvol_get_hashed (this, loc); - if (!subvol) { - gf_log (this->name, GF_LOG_DEBUG, - "no subvolume in layout for path=%s", - loc->path); - op_errno = ENOENT; - goto err; - } + local = dht_local_init (frame, loc, NULL, GF_FOP_MKNOD); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + subvol = dht_subvol_get_hashed (this, loc); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s", + loc->path); + op_errno = ENOENT; + goto err; + } /* Consider the disksize in consideration */ - avail_subvol = conf->local_volume; - if (dht_is_subvol_filled (this, conf->local_volume)) { - avail_subvol = - dht_free_disk_available_subvol (this, - conf->local_volume); + avail_subvol = conf->private; + if (dht_is_subvol_filled (this, (xlator_t *)conf->private)) { + avail_subvol = + dht_free_disk_available_subvol (this, + (xlator_t *)conf->private, + local); } - if (avail_subvol != subvol) { - /* Create linkfile first */ - ret = loc_copy (&local->loc, loc); - if (ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - op_errno = ENOMEM; - goto err; - } - - local->mode = mode; - local->rdev = rdev; - local->cached_subvol = avail_subvol; - - dht_linkfile_create (frame, nufa_mknod_linkfile_cbk, + if (avail_subvol != subvol) { + /* Create linkfile first */ + + local->params = dict_ref (params); + local->mode = mode; + local->umask = umask; + local->rdev = rdev; + local->cached_subvol = avail_subvol; + + dht_linkfile_create (frame, nufa_mknod_linkfile_cbk, this, avail_subvol, subvol, loc); - return 0; - } + return 0; + } - gf_log (this->name, GF_LOG_TRACE, - "creating %s on %s", loc->path, subvol->name); + gf_log (this->name, GF_LOG_TRACE, + "creating %s on %s", loc->path, subvol->name); - STACK_WIND (frame, dht_newfile_cbk, - subvol, subvol->fops->mknod, - loc, mode, rdev); + STACK_WIND_COOKIE (frame, dht_newfile_cbk, (void *)subvol, subvol, + subvol->fops->mknod, loc, mode, rdev, umask, + params); - return 0; + return 0; err: - op_errno = (op_errno == -1) ? errno : op_errno; - DHT_STACK_UNWIND (frame, -1, op_errno, NULL, NULL); + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (mknod, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL); - return 0; + return 0; } -int -notify (xlator_t *this, int event, void *data, ...) +gf_boolean_t +same_first_part (char *str1, char term1, char *str2, char term2) { - int ret = -1; - - ret = dht_notify (this, event, data); - - return ret; + gf_boolean_t ended1; + gf_boolean_t ended2; + + for (;;) { + ended1 = ((*str1 == '\0') || (*str1 == term1)); + ended2 = ((*str2 == '\0') || (*str2 == term2)); + if (ended1 && ended2) { + return _gf_true; + } + if (ended1 || ended2 || (*str1 != *str2)) { + return _gf_false; + } + ++str1; + ++str2; + } } -void -fini (xlator_t *this) +typedef struct nufa_args { + xlator_t *this; + char *volname; + gf_boolean_t addr_match; +} nufa_args_t; + +static void +nufa_find_local_brick (xlator_t *xl, void *data) { - int i = 0; - dht_conf_t *conf = NULL; + nufa_args_t *args = data; + xlator_t *this = args->this; + char *local_volname = args->volname; + gf_boolean_t addr_match = args->addr_match; + char *brick_host = NULL; + dht_conf_t *conf = this->private; + int ret = -1; + + /*This means a local subvol was already found. We pick the first brick + * that is local*/ + if (conf->private) + return; + + if (strcmp (xl->name, local_volname) == 0) { + conf->private = xl; + gf_log (this->name, GF_LOG_INFO, "Using specified subvol %s", + local_volname); + return; + } - conf = this->private; + if (!addr_match) + return; + + ret = dict_get_str (xl->options, "remote-host", &brick_host); + if ((ret == 0) && + (gf_is_same_address (local_volname, brick_host) || + gf_is_local_addr (brick_host))) { + conf->private = xl; + gf_log (this->name, GF_LOG_INFO, "Using the first local " + "subvol %s", xl->name); + return; + } - if (conf) { - if (conf->file_layouts) { - for (i = 0; i < conf->subvolume_cnt; i++) { - FREE (conf->file_layouts[i]); - } - FREE (conf->file_layouts); - } +} - if (conf->default_dir_layout) - FREE (conf->default_dir_layout); +static void +nufa_to_dht (xlator_t *this) +{ + GF_ASSERT (this); + GF_ASSERT (this->fops); - if (conf->subvolumes) - FREE (conf->subvolumes); + this->fops->lookup = dht_lookup; + this->fops->create = dht_create; + this->fops->mknod = dht_mknod; +} - if (conf->subvolume_status) - FREE (conf->subvolume_status); +int +nufa_find_local_subvol (xlator_t *this, + void (*fn) (xlator_t *each, void* data), void *data) +{ + int ret = -1; + dht_conf_t *conf = this->private; + xlator_list_t *trav = NULL; + xlator_t *parent = NULL; + xlator_t *candidate = NULL; + + xlator_foreach_depth_first (this, fn, data); + if (!conf->private) { + gf_log (this->name, GF_LOG_ERROR, "Couldn't find a local " + "brick"); + return -1; + } - FREE (conf); + candidate = conf->private; + trav = candidate->parents; + while (trav) { + + parent = trav->xlator; + if (strcmp (parent->type, "cluster/nufa") == 0) { + gf_log (this->name, GF_LOG_INFO, "Found local subvol, " + "%s", candidate->name); + ret = 0; + conf->private = candidate; + break; + } + + candidate = parent; + trav = parent->parents; } - return; + return ret; } int -init (xlator_t *this) +nufa_init (xlator_t *this) { - dht_conf_t *conf = NULL; - xlator_list_t *trav = NULL; - data_t *data = NULL; - char *local_volname = NULL; - char *lookup_unhashed_str = NULL; + data_t *data = NULL; + char *local_volname = NULL; int ret = -1; - int i = 0; - char my_hostname[256]; - - if (!this->children) { - gf_log (this->name, GF_LOG_CRITICAL, - "NUFA needs more than one subvolume"); - return -1; - } - - if (!this->parents) { - gf_log (this->name, GF_LOG_WARNING, - "dangling volume. check volfile"); - } - - conf = CALLOC (1, sizeof (*conf)); - if (!conf) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; + char my_hostname[256]; + gf_boolean_t addr_match = _gf_false; + nufa_args_t args = {0, }; + + ret = dht_init(this); + if (ret) { + return ret; } - conf->search_unhashed = 0; + if ((data = dict_get (this->options, "local-volume-name"))) { + local_volname = data->data; - if (dict_get_str (this->options, "lookup-unhashed", - &lookup_unhashed_str) == 0) { - gf_string2boolean (lookup_unhashed_str, - &conf->search_unhashed); - } + } else { + addr_match = _gf_true; + local_volname = "localhost"; + ret = gethostname (my_hostname, 256); + if (ret == 0) + local_volname = my_hostname; - ret = dht_init_subvolumes (this, conf); - if (ret == -1) { - goto err; - } + else + gf_log (this->name, GF_LOG_WARNING, + "could not find hostname (%s)", + strerror (errno)); - ret = dht_layouts_init (this, conf); - if (ret == -1) { - goto err; } - LOCK_INIT (&conf->subvolume_lock); - - conf->gen = 1; - - local_volname = "localhost"; - ret = gethostname (my_hostname, 256); - if (ret < 0) { - gf_log (this->name, GF_LOG_WARNING, - "could not find hostname (%s)", - strerror (errno)); - } - - if (ret == 0) - local_volname = my_hostname; - - data = dict_get (this->options, "local-volume-name"); - if (data) { - local_volname = data->data; - } - - trav = this->children; - while (trav) { - if (strcmp (trav->xlator->name, local_volname) == 0) - break; - trav = trav->next; - } - - if (!trav) { - gf_log (this->name, GF_LOG_ERROR, - "Could not find subvolume named '%s'. " - "Please define volume with the name as the hostname " - "or override it with 'option local-volume-name'", - local_volname); - goto err; - } - /* The volume specified exists */ - conf->local_volume = trav->xlator; - - conf->min_free_disk = 10; - - data = dict_get (this->options, "min-free-disk"); - if (data) { - gf_string2percent (data->data, &conf->min_free_disk); - } - - conf->du_stats = CALLOC (conf->subvolume_cnt, sizeof (dht_du_t)); - if (!conf->du_stats) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory"); - goto err; + args.this = this; + args.volname = local_volname; + args.addr_match = addr_match; + ret = nufa_find_local_subvol (this, nufa_find_local_brick, &args); + if (ret) { + gf_log (this->name, GF_LOG_INFO, + "Unable to find local subvolume, switching " + "to dht mode"); + nufa_to_dht (this); } - - this->private = conf; - return 0; - -err: - if (conf) { - if (conf->file_layouts) { - for (i = 0; i < conf->subvolume_cnt; i++) { - FREE (conf->file_layouts[i]); - } - FREE (conf->file_layouts); - } - - if (conf->default_dir_layout) - FREE (conf->default_dir_layout); - - if (conf->subvolumes) - FREE (conf->subvolumes); - - if (conf->subvolume_status) - FREE (conf->subvolume_status); - - if (conf->du_stats) - FREE (conf->du_stats); - - FREE (conf); - } - - return -1; } -struct xlator_fops fops = { - .lookup = nufa_lookup, - .create = nufa_create, - .mknod = nufa_mknod, - - .stat = dht_stat, - .chmod = dht_chmod, - .chown = dht_chown, - .fchown = dht_fchown, - .fchmod = dht_fchmod, - .fstat = dht_fstat, - .utimens = dht_utimens, - .truncate = dht_truncate, - .ftruncate = dht_ftruncate, - .access = dht_access, - .readlink = dht_readlink, - .setxattr = dht_setxattr, - .getxattr = dht_getxattr, - .removexattr = dht_removexattr, - .open = dht_open, - .readv = dht_readv, - .writev = dht_writev, - .flush = dht_flush, - .fsync = dht_fsync, - .statfs = dht_statfs, - .lk = dht_lk, - .opendir = dht_opendir, - .readdir = dht_readdir, - .fsyncdir = dht_fsyncdir, - .symlink = dht_symlink, - .unlink = dht_unlink, - .link = dht_link, - .mkdir = dht_mkdir, - .rmdir = dht_rmdir, - .rename = dht_rename, - .inodelk = dht_inodelk, - .finodelk = dht_finodelk, - .entrylk = dht_entrylk, - .fentrylk = dht_fentrylk, - .xattrop = dht_xattrop, - .fxattrop = dht_fxattrop, -#if 0 - .setdents = dht_setdents, - .getdents = dht_getdents, - .checksum = dht_checksum, -#endif +class_methods_t class_methods = { + .init = nufa_init, + .fini = dht_fini, + .reconfigure = dht_reconfigure, + .notify = dht_notify }; -struct xlator_mops mops = { +struct xlator_fops fops = { + .lookup = nufa_lookup, + .create = nufa_create, + .mknod = nufa_mknod, + + .stat = dht_stat, + .fstat = dht_fstat, + .truncate = dht_truncate, + .ftruncate = dht_ftruncate, + .access = dht_access, + .readlink = dht_readlink, + .setxattr = dht_setxattr, + .getxattr = dht_getxattr, + .removexattr = dht_removexattr, + .open = dht_open, + .readv = dht_readv, + .writev = dht_writev, + .flush = dht_flush, + .fsync = dht_fsync, + .statfs = dht_statfs, + .lk = dht_lk, + .opendir = dht_opendir, + .readdir = dht_readdir, + .readdirp = dht_readdirp, + .fsyncdir = dht_fsyncdir, + .symlink = dht_symlink, + .unlink = dht_unlink, + .link = dht_link, + .mkdir = dht_mkdir, + .rmdir = dht_rmdir, + .rename = dht_rename, + .inodelk = dht_inodelk, + .finodelk = dht_finodelk, + .entrylk = dht_entrylk, + .fentrylk = dht_fentrylk, + .xattrop = dht_xattrop, + .fxattrop = dht_fxattrop, + .setattr = dht_setattr, }; struct xlator_cbks cbks = { -// .release = dht_release, -// .releasedir = dht_releasedir, - .forget = dht_forget -}; - - -struct volume_options options[] = { - { .key = {"local-volume-name"}, - .type = GF_OPTION_TYPE_XLATOR - }, - { .key = {"lookup-unhashed"}, - .type = GF_OPTION_TYPE_BOOL - }, - { .key = {"min-free-disk"}, - .type = GF_OPTION_TYPE_PERCENT - }, - { .key = {NULL} }, + .forget = dht_forget }; diff --git a/xlators/cluster/dht/src/switch.c b/xlators/cluster/dht/src/switch.c new file mode 100644 index 000000000..d3ea90ba8 --- /dev/null +++ b/xlators/cluster/dht/src/switch.c @@ -0,0 +1,904 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "dht-common.h" +#include "dht-mem-types.h" + +#include <sys/time.h> +#include <stdlib.h> +#include <fnmatch.h> +#include <string.h> + +extern struct volume_options options[]; + +struct switch_sched_array { + xlator_t *xl; + int32_t eligible; + int32_t considered; +}; + +/* Select one of this struct based on the path's pattern match */ +struct switch_struct { + struct switch_struct *next; + struct switch_sched_array *array; + int32_t node_index; /* Index of the node in + this pattern. */ + int32_t num_child; /* Total num of child nodes + with this pattern. */ + char path_pattern[256]; +}; + +/* TODO: all 'TODO's in dht.c holds good */ +/* This function should return child node as '*:subvolumes' is inserterd */ + +static int32_t +gf_switch_valid_child (xlator_t *this, const char *child) +{ + xlator_list_t *children = NULL; + int32_t ret = 0; + + children = this->children; + while (children) { + if (!strcmp (child, children->xlator->name)) { + ret = 1; + break; + } + children = children->next; + } + + return ret; +} + +static xlator_t * +get_switch_matching_subvol (const char *path, dht_conf_t *conf, + xlator_t *hashed_subvol) +{ + struct switch_struct *cond = NULL; + struct switch_struct *trav = NULL; + char *pathname = NULL; + int idx = 0; + xlator_t *subvol = NULL; + + cond = conf->private; + subvol = hashed_subvol; + if (!cond) + goto out; + + pathname = gf_strdup (path); + if (!pathname) + goto out; + + trav = cond; + while (trav) { + if (fnmatch (trav->path_pattern, + pathname, FNM_NOESCAPE) == 0) { + for (idx = 0; idx < trav->num_child; idx++) { + if (trav->array[idx].xl == hashed_subvol) + goto out; + } + idx = trav->node_index++; + trav->node_index %= trav->num_child; + subvol = trav->array[idx].xl; + goto out; + } + trav = trav->next; + } +out: + GF_FREE (pathname); + + return subvol; +} + + +int +switch_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent) +{ + xlator_t *subvol = NULL; + char is_linkfile = 0; + char is_dir = 0; + dht_conf_t *conf = NULL; + dht_local_t *local = NULL; + loc_t *loc = NULL; + int i = 0; + call_frame_t *prev = NULL; + int call_cnt = 0; + int ret = 0; + + conf = this->private; + + prev = cookie; + local = frame->local; + loc = &local->loc; + + if (ENTRY_MISSING (op_ret, op_errno)) { + if (conf->search_unhashed) { + local->op_errno = ENOENT; + dht_lookup_everywhere (frame, this, loc); + return 0; + } + } + + if (op_ret == -1) + goto out; + + is_linkfile = check_is_linkfile (inode, stbuf, xattr, + conf->link_xattr_name); + is_dir = check_is_dir (inode, stbuf, xattr); + + if (!is_dir && !is_linkfile) { + /* non-directory and not a linkfile */ + + ret = dht_layout_preset (this, prev->this, inode); + if (ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "could not set pre-set layout for subvol %s", + prev->this->name); + op_ret = -1; + op_errno = EINVAL; + goto err; + } + + goto out; + } + + if (is_dir) { + call_cnt = conf->subvolume_cnt; + local->call_cnt = call_cnt; + + local->inode = inode_ref (inode); + local->xattr = dict_ref (xattr); + + local->op_ret = 0; + local->op_errno = 0; + + local->layout = dht_layout_new (this, conf->subvolume_cnt); + if (!local->layout) { + op_ret = -1; + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_DEBUG, + "memory allocation failed :("); + goto err; + } + + for (i = 0; i < call_cnt; i++) { + STACK_WIND (frame, dht_lookup_dir_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->lookup, + &local->loc, local->xattr_req); + } + } + + if (is_linkfile) { + subvol = dht_linkfile_subvol (this, inode, stbuf, xattr); + + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "linkfile not having link subvolume. path=%s", + loc->path); + dht_lookup_everywhere (frame, this, loc); + return 0; + } + + STACK_WIND (frame, dht_lookup_linkfile_cbk, + subvol, subvol->fops->lookup, + &local->loc, local->xattr_req); + } + + return 0; + +out: + if (!local->hashed_subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s", + local->loc.path); + local->op_errno = ENOENT; + dht_lookup_everywhere (frame, this, loc); + return 0; + } + + STACK_WIND (frame, dht_lookup_cbk, + local->hashed_subvol, local->hashed_subvol->fops->lookup, + &local->loc, local->xattr_req); + + return 0; + +err: + DHT_STACK_UNWIND (lookup, frame, op_ret, op_errno, + inode, stbuf, xattr, NULL); + return 0; +} + +int +switch_lookup (call_frame_t *frame, xlator_t *this, + loc_t *loc, dict_t *xattr_req) +{ + xlator_t *hashed_subvol = NULL; + xlator_t *cached_subvol = NULL; + xlator_t *subvol = NULL; + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; + int ret = -1; + int op_errno = -1; + dht_layout_t *layout = NULL; + int i = 0; + int call_cnt = 0; + + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); + VALIDATE_OR_GOTO (loc->path, err); + + conf = this->private; + + local = dht_local_init (frame, loc, NULL, GF_FOP_LOOKUP); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + if (xattr_req) { + local->xattr_req = dict_ref (xattr_req); + } else { + local->xattr_req = dict_new (); + } + + hashed_subvol = dht_subvol_get_hashed (this, &local->loc); + cached_subvol = local->cached_subvol; + + local->hashed_subvol = hashed_subvol; + + if (is_revalidate (loc)) { + layout = local->layout; + if (!layout) { + gf_log (this->name, GF_LOG_DEBUG, + "revalidate without cache. path=%s", + loc->path); + op_errno = EINVAL; + goto err; + } + + if (layout->gen && (layout->gen < conf->gen)) { + gf_log (this->name, GF_LOG_DEBUG, + "incomplete layout failure for path=%s", + loc->path); + dht_layout_unref (this, local->layout); + goto do_fresh_lookup; + } + + local->inode = inode_ref (loc->inode); + + local->call_cnt = layout->cnt; + call_cnt = local->call_cnt; + + /* NOTE: we don't require 'trusted.glusterfs.dht.linkto' + * attribute, revalidates directly go to the cached-subvolume. + */ + ret = dict_set_uint32 (local->xattr_req, + conf->xattr_name, 4 * 4); + if (ret < 0) + gf_log (this->name, GF_LOG_WARNING, + "failed to set dict value for %s", + conf->xattr_name); + + for (i = 0; i < layout->cnt; i++) { + subvol = layout->list[i].xlator; + + STACK_WIND (frame, dht_revalidate_cbk, + subvol, subvol->fops->lookup, + loc, local->xattr_req); + + if (!--call_cnt) + break; + } + } else { + do_fresh_lookup: + ret = dict_set_uint32 (local->xattr_req, + conf->xattr_name, 4 * 4); + if (ret < 0) + gf_log (this->name, GF_LOG_WARNING, + "failed to set dict value for %s", + conf->xattr_name); + + ret = dict_set_uint32 (local->xattr_req, + conf->link_xattr_name, 256); + if (ret < 0) + gf_log (this->name, GF_LOG_WARNING, + "failed to set dict value for %s", + conf->link_xattr_name); + + if (!hashed_subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s, " + "checking on all the subvols to see if " + "it is a directory", loc->path); + call_cnt = conf->subvolume_cnt; + local->call_cnt = call_cnt; + + local->layout = dht_layout_new (this, + conf->subvolume_cnt); + if (!local->layout) { + op_errno = ENOMEM; + goto err; + } + + for (i = 0; i < call_cnt; i++) { + STACK_WIND (frame, dht_lookup_dir_cbk, + conf->subvolumes[i], + conf->subvolumes[i]->fops->lookup, + &local->loc, local->xattr_req); + } + return 0; + } + + /* */ + cached_subvol = get_switch_matching_subvol (loc->path, conf, + hashed_subvol); + if (cached_subvol == hashed_subvol) { + STACK_WIND (frame, dht_lookup_cbk, + hashed_subvol, + hashed_subvol->fops->lookup, + loc, local->xattr_req); + } else { + STACK_WIND (frame, switch_local_lookup_cbk, + cached_subvol, + cached_subvol->fops->lookup, + loc, local->xattr_req); + } + } + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (lookup, frame, -1, op_errno, + NULL, NULL, NULL, NULL); + return 0; +} + +int +switch_create_linkfile_create_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + dht_local_t *local = NULL; + + local = frame->local; + + if (op_ret == -1) + goto err; + + STACK_WIND (frame, dht_create_cbk, + local->cached_subvol, local->cached_subvol->fops->create, + &local->loc, local->flags, local->mode, local->umask, + local->fd, local->params); + + return 0; + +err: + DHT_STACK_UNWIND (create, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL, NULL); + return 0; +} + +int +switch_create (call_frame_t *frame, xlator_t *this, + loc_t *loc, int32_t flags, mode_t mode, + mode_t umask, fd_t *fd, dict_t *params) +{ + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; + xlator_t *subvol = NULL; + xlator_t *avail_subvol = NULL; + int op_errno = -1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + + conf = this->private; + + dht_get_du_info (frame, this, loc); + + local = dht_local_init (frame, loc, fd, GF_FOP_CREATE); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + subvol = dht_subvol_get_hashed (this, loc); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s", + loc->path); + op_errno = ENOENT; + goto err; + } + + avail_subvol = get_switch_matching_subvol (loc->path, conf, subvol); + if (dht_is_subvol_filled (this, avail_subvol)) { + avail_subvol = + dht_free_disk_available_subvol (this, avail_subvol, + local); + } + + if (subvol != avail_subvol) { + /* create a link file instead of actual file */ + local->mode = mode; + local->flags = flags; + local->umask = umask; + local->cached_subvol = avail_subvol; + dht_linkfile_create (frame, switch_create_linkfile_create_cbk, + this, avail_subvol, subvol, loc); + return 0; + } + + gf_log (this->name, GF_LOG_TRACE, + "creating %s on %s", loc->path, subvol->name); + + STACK_WIND (frame, dht_create_cbk, + subvol, subvol->fops->create, + loc, flags, mode, umask, fd, params); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (create, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL, NULL); + + return 0; +} + +int +switch_mknod_linkfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, inode_t *inode, + struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + dht_local_t *local = NULL; + + local = frame->local; + if (!local || !local->cached_subvol) { + op_errno = EINVAL; + op_ret = -1; + goto err; + } + + if (op_ret >= 0) { + STACK_WIND_COOKIE (frame, dht_newfile_cbk, + (void *)local->cached_subvol, local->cached_subvol, + local->cached_subvol->fops->mknod, + &local->loc, local->mode, local->rdev, + local->umask, local->params); + + return 0; + } +err: + DHT_STACK_UNWIND (link, frame, op_ret, op_errno, + inode, stbuf, preparent, postparent, xdata); + return 0; +} + + +int +switch_mknod (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode, + dev_t rdev, mode_t umask, dict_t *params) +{ + dht_local_t *local = NULL; + dht_conf_t *conf = NULL; + xlator_t *subvol = NULL; + xlator_t *avail_subvol = NULL; + int op_errno = -1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + + conf = this->private; + + dht_get_du_info (frame, this, loc); + + local = dht_local_init (frame, loc, NULL, GF_FOP_MKNOD); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + subvol = dht_subvol_get_hashed (this, loc); + if (!subvol) { + gf_log (this->name, GF_LOG_DEBUG, + "no subvolume in layout for path=%s", + loc->path); + op_errno = ENOENT; + goto err; + } + + /* Consider the disksize in consideration */ + avail_subvol = get_switch_matching_subvol (loc->path, conf, subvol); + if (dht_is_subvol_filled (this, avail_subvol)) { + avail_subvol = + dht_free_disk_available_subvol (this, avail_subvol, + local); + } + + if (avail_subvol != subvol) { + /* Create linkfile first */ + + local->params = dict_ref (params); + local->mode = mode; + local->umask = umask; + local->rdev = rdev; + local->cached_subvol = avail_subvol; + + dht_linkfile_create (frame, switch_mknod_linkfile_cbk, + this, avail_subvol, subvol, loc); + return 0; + } + + gf_log (this->name, GF_LOG_TRACE, + "creating %s on %s", loc->path, subvol->name); + + STACK_WIND_COOKIE (frame, dht_newfile_cbk, (void *)subvol, subvol, + subvol->fops->mknod, loc, mode, rdev, umask, + params); + + return 0; + +err: + op_errno = (op_errno == -1) ? errno : op_errno; + DHT_STACK_UNWIND (mknod, frame, -1, op_errno, + NULL, NULL, NULL, NULL, NULL); + + return 0; +} + + +void +switch_fini (xlator_t *this) +{ + dht_conf_t *conf = NULL; + struct switch_struct *trav = NULL; + struct switch_struct *prev = NULL; + + conf = this->private; + + if (conf) { + trav = (struct switch_struct *)conf->private; + conf->private = NULL; + while (trav) { + GF_FREE (trav->array); + prev = trav; + trav = trav->next; + GF_FREE (prev); + } + } + + dht_fini(this); +} + +int +set_switch_pattern (xlator_t *this, dht_conf_t *conf, + const char *pattern_str) +{ + int flag = 0; + int idx = 0; + int index = 0; + int child_count = 0; + char *tmp = NULL; + char *tmp1 = NULL; + char *child = NULL; + char *tmp_str = NULL; + char *tmp_str1 = NULL; + char *dup_str = NULL; + char *dup_childs = NULL; + char *switch_str = NULL; + char *pattern = NULL; + char *childs = NULL; + char *option_string = NULL; + struct switch_struct *switch_buf = NULL; + struct switch_struct *switch_opt = NULL; + struct switch_struct *trav = NULL; + struct switch_sched_array *switch_buf_array = NULL; + xlator_list_t *trav_xl = NULL; + + trav_xl = this->children; + while (trav_xl) { + index++; + trav_xl = trav_xl->next; + } + child_count = index; + switch_buf_array = GF_CALLOC ((index + 1), + sizeof (struct switch_sched_array), + gf_switch_mt_switch_sched_array); + if (!switch_buf_array) + goto err; + + trav_xl = this->children; + index = 0; + + while (trav_xl) { + switch_buf_array[index].xl = trav_xl->xlator; + switch_buf_array[index].eligible = 1; + trav_xl = trav_xl->next; + index++; + } + + /* *jpg:child1,child2;*mpg:child3;*:child4,child5,child6 */ + + /* Get the pattern for considering switch case. + "option block-size *avi:10MB" etc */ + option_string = gf_strdup (pattern_str); + switch_str = strtok_r (option_string, ";", &tmp_str); + while (switch_str) { + dup_str = gf_strdup (switch_str); + switch_opt = GF_CALLOC (1, sizeof (struct switch_struct), + gf_switch_mt_switch_struct); + if (!switch_opt) { + GF_FREE (dup_str); + goto err; + } + + pattern = strtok_r (dup_str, ":", &tmp_str1); + childs = strtok_r (NULL, ":", &tmp_str1); + if (strncmp (pattern, "*", 2) == 0) { + gf_log ("switch", GF_LOG_INFO, + "'*' pattern will be taken by default " + "for all the unconfigured child nodes," + " hence neglecting current option"); + switch_str = strtok_r (NULL, ";", &tmp_str); + GF_FREE (switch_opt); + GF_FREE (dup_str); + continue; + } + memcpy (switch_opt->path_pattern, pattern, strlen (pattern)); + if (childs) { + dup_childs = gf_strdup (childs); + child = strtok_r (dup_childs, ",", &tmp); + while (child) { + if (gf_switch_valid_child (this, child)) { + idx++; + child = strtok_r (NULL, ",", &tmp); + } else { + gf_log (this->name, GF_LOG_ERROR, + "%s is not a subvolume of %s. " + "pattern can only be scheduled " + "only to a subvolume of %s", + child, this->name, this->name); + goto err; + } + } + GF_FREE (dup_childs); + child = strtok_r (childs, ",", &tmp1); + switch_opt->num_child = idx; + switch_opt->array = GF_CALLOC (1, (idx * + sizeof (struct switch_sched_array)), + gf_switch_mt_switch_sched_array); + if (!switch_opt->array) + goto err; + idx = 0; + while (child) { + for (index = 0; index < child_count; index++) { + if (strcmp (switch_buf_array[index].xl->name, + child) == 0) { + gf_log ("switch", GF_LOG_DEBUG, + "'%s' pattern will be " + "scheduled to \"%s\"", + switch_opt->path_pattern, child); + /* + if (switch_buf_array[index-1].considered) { + gf_log ("switch", GF_LOG_DEBUG, + "ambiguity found, exiting"); + return -1; + } + */ + switch_opt->array[idx].xl = switch_buf_array[index].xl; + switch_buf_array[index].considered = 1; + idx++; + break; + } + } + child = strtok_r (NULL, ",", &tmp1); + } + } else { + /* error */ + gf_log ("switch", GF_LOG_ERROR, + "Check \"scheduler.switch.case\" " + "option in unify volume. Exiting"); + goto err; + } + GF_FREE (dup_str); + + /* Link it to the main structure */ + if (switch_buf) { + /* there are already few entries */ + trav = switch_buf; + while (trav->next) + trav = trav->next; + trav->next = switch_opt; + } else { + /* First entry */ + switch_buf = switch_opt; + } + switch_opt = NULL; + switch_str = strtok_r (NULL, ";", &tmp_str); + } + + /* Now, all the pattern based considerations done, so for all the + * remaining pattern, '*' to all the remaining child nodes + */ + { + for (index=0; index < child_count; index++) { + /* check for considered flag */ + if (switch_buf_array[index].considered) + continue; + flag++; + } + if (!flag) { + gf_log ("switch", GF_LOG_ERROR, + "No nodes left for pattern '*'. Exiting"); + goto err; + } + switch_opt = GF_CALLOC (1, sizeof (struct switch_struct), + gf_switch_mt_switch_struct); + if (!switch_opt) + goto err; + + /* Add the '*' pattern to the array */ + memcpy (switch_opt->path_pattern, "*", 2); + switch_opt->num_child = flag; + switch_opt->array = + GF_CALLOC (1, + flag * sizeof (struct switch_sched_array), + gf_switch_mt_switch_sched_array); + if (!switch_opt->array) + goto err; + flag = 0; + for (index=0; index < child_count; index++) { + /* check for considered flag */ + if (switch_buf_array[index].considered) + continue; + gf_log ("switch", GF_LOG_DEBUG, + "'%s' pattern will be scheduled to \"%s\"", + switch_opt->path_pattern, + switch_buf_array[index].xl->name); + switch_opt->array[flag].xl = + switch_buf_array[index].xl; + switch_buf_array[index].considered = 1; + flag++; + } + if (switch_buf) { + /* there are already few entries */ + trav = switch_buf; + while (trav->next) + trav = trav->next; + trav->next = switch_opt; + } else { + /* First entry */ + switch_buf = switch_opt; + } + switch_opt = NULL; + } + /* */ + conf->private = switch_buf; + + return 0; +err: + GF_FREE (switch_buf_array); + GF_FREE (switch_opt); + + if (switch_buf) { + trav = switch_buf; + while (trav) { + GF_FREE (trav->array); + switch_opt = trav; + trav = trav->next; + GF_FREE (switch_opt); + } + } + return -1; +} + + +int32_t +switch_init (xlator_t *this) +{ + dht_conf_t *conf = NULL; + data_t *data = NULL; + int ret = -1; + + ret = dht_init(this); + if (ret) { + return ret; + } + conf = this->private; + + data = dict_get (this->options, "pattern.switch.case"); + if (data) { + /* TODO: */ + ret = set_switch_pattern (this, conf, data->data); + if (ret) { + goto err; + } + } + + this->private = conf; + return 0; + +err: + dht_fini(this); + return -1; +} + + +class_methods_t class_methods = { + .init = switch_init, + .fini = switch_fini, + .reconfigure = dht_reconfigure, + .notify = dht_notify +}; + + +struct xlator_fops fops = { + .lookup = switch_lookup, + .create = switch_create, + .mknod = switch_mknod, + + .stat = dht_stat, + .fstat = dht_fstat, + .truncate = dht_truncate, + .ftruncate = dht_ftruncate, + .access = dht_access, + .readlink = dht_readlink, + .setxattr = dht_setxattr, + .getxattr = dht_getxattr, + .removexattr = dht_removexattr, + .open = dht_open, + .readv = dht_readv, + .writev = dht_writev, + .flush = dht_flush, + .fsync = dht_fsync, + .statfs = dht_statfs, + .lk = dht_lk, + .opendir = dht_opendir, + .readdir = dht_readdir, + .readdirp = dht_readdirp, + .fsyncdir = dht_fsyncdir, + .symlink = dht_symlink, + .unlink = dht_unlink, + .link = dht_link, + .mkdir = dht_mkdir, + .rmdir = dht_rmdir, + .rename = dht_rename, + .inodelk = dht_inodelk, + .finodelk = dht_finodelk, + .entrylk = dht_entrylk, + .fentrylk = dht_fentrylk, + .xattrop = dht_xattrop, + .fxattrop = dht_fxattrop, + .setattr = dht_setattr, +}; + + +struct xlator_cbks cbks = { + .forget = dht_forget +}; diff --git a/xlators/cluster/ha/src/Makefile.am b/xlators/cluster/ha/src/Makefile.am index 5f78a2965..5c1364b7f 100644 --- a/xlators/cluster/ha/src/Makefile.am +++ b/xlators/cluster/ha/src/Makefile.am @@ -1,15 +1,16 @@ xlator_LTLIBRARIES = ha.la xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/testing/cluster -ha_la_LDFLAGS = -module -avoidversion +ha_la_LDFLAGS = -module -avoid-version ha_la_SOURCES = ha-helpers.c ha.c ha_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la noinst_HEADERS = ha.h -AM_CFLAGS = -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -Wall -D$(GF_HOST_OS) \ - -I$(top_srcdir)/libglusterfs/src -shared -nostartfiles $(GF_CFLAGS) +AM_CPPFLAGS = $(GF_CPPFLAGS) -I$(top_srcdir)/libglusterfs/src + +AM_CFLAGS = -Wall $(GF_CFLAGS) CLEANFILES = diff --git a/xlators/cluster/ha/src/ha-helpers.c b/xlators/cluster/ha/src/ha-helpers.c index 4bc7d5e20..19be1ed27 100644 --- a/xlators/cluster/ha/src/ha-helpers.c +++ b/xlators/cluster/ha/src/ha-helpers.c @@ -1,22 +1,12 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. -*/ + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ #include "xlator.h" #include "call-stub.h" #include "defaults.h" @@ -49,12 +39,14 @@ int ha_alloc_init_fd (call_frame_t *frame, fd_t *fd) goto out; } hafdp = (hafd_t *)(long)tmp_hafdp; - local = frame->local = CALLOC (1, sizeof (*local)); + local = frame->local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); if (local == NULL) { ret = -ENOMEM; goto out; } - local->state = CALLOC (1, child_count); + local->state = GF_CALLOC (1, child_count, + gf_ha_mt_child_count); if (local->state == NULL) { ret = -ENOMEM; goto out; @@ -141,11 +133,17 @@ int ha_handle_cbk (call_frame_t *frame, void *cookie, int op_ret, int op_errno) } } } - if (local->stub) + if (local->stub) { call_stub_destroy (local->stub); + local->stub = NULL; + } + if (local->fd) { - FREE (local->state); + GF_FREE (local->state); + local->state = NULL; + fd_unref (local->fd); + local->fd = NULL; } return 0; } @@ -164,7 +162,8 @@ int ha_alloc_init_inode (call_frame_t *frame, inode_t *inode) local = frame->local; if (local == NULL) { - local = frame->local = CALLOC (1, sizeof (*local)); + local = frame->local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); if (local == NULL) { ret = -ENOMEM; goto out; diff --git a/xlators/cluster/ha/src/ha-mem-types.h b/xlators/cluster/ha/src/ha-mem-types.h new file mode 100644 index 000000000..e5e97d237 --- /dev/null +++ b/xlators/cluster/ha/src/ha-mem-types.h @@ -0,0 +1,26 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#ifndef __HA_MEM_TYPES_H__ +#define __HA_MEM_TYPES_H__ + +#include "mem-types.h" + +enum gf_ha_mem_types_ { + gf_ha_mt_ha_local_t = gf_common_mt_end + 1, + gf_ha_mt_hafd_t, + gf_ha_mt_char, + gf_ha_mt_child_count, + gf_ha_mt_xlator_t, + gf_ha_mt_ha_private_t, + gf_ha_mt_end +}; +#endif + diff --git a/xlators/cluster/ha/src/ha.c b/xlators/cluster/ha/src/ha.c index e7391eead..3eccb516b 100644 --- a/xlators/cluster/ha/src/ha.c +++ b/xlators/cluster/ha/src/ha.c @@ -1,22 +1,12 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. -*/ + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ /* generate errors randomly, code is simple now, better alogorithm * can be written to decide what error to be returned and when */ @@ -41,6 +31,41 @@ * - do not alloc the call-stub in case only one subvol is up. */ +void +ha_local_wipe (ha_local_t *local) +{ + if (local->stub) { + call_stub_destroy (local->stub); + local->stub = NULL; + } + + if (local->state) { + GF_FREE (local->state); + local->state = NULL; + } + + if (local->dict) { + dict_unref (local->dict); + local->dict = NULL; + } + + loc_wipe (&local->loc); + + if (local->fd) { + fd_unref (local->fd); + local->fd = NULL; + } + + if (local->inode) { + inode_unref (local->inode); + local->inode = NULL; + } + + GF_FREE (local); + return; +} + + int ha_forget (xlator_t *this, inode_t *inode) @@ -49,7 +74,7 @@ ha_forget (xlator_t *this, char *state = NULL; if (!inode_ctx_del (inode, this, &stateino)) { state = ((char *)(long)stateino); - FREE (state); + GF_FREE (state); } return 0; @@ -63,8 +88,9 @@ ha_lookup_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf, - dict_t *dict) + struct iatt *buf, + dict_t *dict, + struct iatt *postparent) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -106,6 +132,7 @@ ha_lookup_cbk (call_frame_t *frame, if (local->op_ret == -1 && op_ret == 0) { local->op_ret = 0; local->buf = *buf; + local->postparent = *postparent; if (dict) local->dict = dict_ref (dict); } @@ -127,7 +154,8 @@ ha_lookup_cbk (call_frame_t *frame, local->op_errno, inode, &local->buf, - ctx); + ctx, + &local->postparent); if (inode) inode_unref (inode); if (ctx) @@ -148,19 +176,33 @@ ha_lookup (call_frame_t *frame, char *state = NULL; xlator_t **children = NULL; int ret = -1; + int32_t op_errno = EINVAL; local = frame->local; pvt = this->private; child_count = pvt->child_count; children = pvt->children; - frame->local = local = CALLOC (1, sizeof (*local)); + frame->local = local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!local) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto unwind; + } + child_count = pvt->child_count; local->inode = inode_ref (loc->inode); ret = inode_ctx_get (loc->inode, this, NULL); if (ret) { - state = CALLOC (1, child_count); + state = GF_CALLOC (1, child_count, gf_ha_mt_child_count); + if (state == NULL) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto unwind; + } + inode_ctx_put (loc->inode, this, (uint64_t)(long)state); } else local->revalidate = 1; @@ -178,6 +220,14 @@ ha_lookup (call_frame_t *frame, xattr_req); } return 0; + +unwind: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL, NULL); + + ha_local_wipe (local); + return 0; } int32_t @@ -186,7 +236,7 @@ ha_stat_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) + struct iatt *buf) { int ret = -1; @@ -229,135 +279,25 @@ err: return 0; } - int32_t -ha_chmod_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) -{ - int ret = -1; - - ret = ha_handle_cbk (frame, cookie, op_ret, op_errno); - - if (ret == 0) { - STACK_UNWIND (frame, - op_ret, - op_errno, - buf); - } - return 0; -} - int32_t -ha_chmod (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode) -{ - ha_local_t *local = NULL; - int op_errno = 0; - - op_errno = ha_alloc_init_inode (frame, loc->inode); - if (op_errno < 0) { - op_errno = -op_errno; - goto err; - } - local = frame->local; - local->stub = fop_chmod_stub (frame, ha_chmod, loc, mode); - - STACK_WIND_COOKIE (frame, - ha_chmod_cbk, - (void *)(long)local->active, - HA_ACTIVE_CHILD(this, local), - HA_ACTIVE_CHILD(this, local)->fops->chmod, - loc, - mode); - return 0; -err: - STACK_UNWIND (frame, -1, op_errno, NULL); - return 0; -} - - int32_t -ha_fchmod_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) +ha_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *statpre, + struct iatt *statpost) { int ret = -1; ret = ha_handle_cbk (frame, cookie, op_ret, op_errno); if (ret == 0) { - STACK_UNWIND (frame, - op_ret, - op_errno, - buf); + STACK_UNWIND (frame, op_ret, op_errno, statpre, statpost); } return 0; } -int32_t -ha_fchmod (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - mode_t mode) -{ - ha_local_t *local = NULL; - int op_errno = 0; - - op_errno = ha_alloc_init_fd (frame, fd); - if (op_errno < 0) { - op_errno = -op_errno; - goto err; - } - local = frame->local; - local->stub = fop_fchmod_stub (frame, ha_fchmod, fd, mode); - - STACK_WIND_COOKIE (frame, - ha_fchmod_cbk, - (void *)(long)local->active, - HA_ACTIVE_CHILD(this, local), - HA_ACTIVE_CHILD(this, local)->fops->fchmod, - fd, - mode); - return 0; -err: - STACK_UNWIND (frame, -1, op_errno, NULL); - return 0; -} - - int32_t -ha_chown_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) -{ - int ret = -1; - - ret = ha_handle_cbk (frame, cookie, op_ret, op_errno); - - if (ret == 0) { - STACK_UNWIND (frame, - op_ret, - op_errno, - buf); - } - return 0; -} int32_t -ha_chown (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - uid_t uid, - gid_t gid) +ha_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc, struct iatt *stbuf, + int32_t valid) { ha_local_t *local = NULL; int op_errno = 0; @@ -368,49 +308,24 @@ ha_chown (call_frame_t *frame, goto err; } local = frame->local; - local->stub = fop_chown_stub (frame, ha_chown, loc, uid, gid); + local->stub = fop_setattr_stub (frame, ha_setattr, loc, stbuf, valid); - STACK_WIND_COOKIE (frame, - ha_chown_cbk, + STACK_WIND_COOKIE (frame, + ha_setattr_cbk, (void *)(long)local->active, HA_ACTIVE_CHILD(this, local), - HA_ACTIVE_CHILD(this, local)->fops->chown, - loc, - uid, - gid); + HA_ACTIVE_CHILD(this, local)->fops->setattr, + loc, stbuf, valid); return 0; err: - STACK_UNWIND (frame, -1, ENOTCONN, NULL); + STACK_UNWIND (frame, -1, op_errno, NULL, NULL); return 0; } - int32_t -ha_fchown_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) -{ - int ret = -1; - - ret = ha_handle_cbk (frame, cookie, op_ret, op_errno); - if (ret == 0) { - STACK_UNWIND (frame, - op_ret, - op_errno, - buf); - } - return 0; -} - -int32_t -ha_fchown (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - uid_t uid, - gid_t gid) +int32_t +ha_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iatt *stbuf, + int32_t valid) { ha_local_t *local = NULL; int op_errno = 0; @@ -421,29 +336,29 @@ ha_fchown (call_frame_t *frame, goto err; } local = frame->local; - local->stub = fop_fchown_stub (frame, ha_fchown, fd, uid, gid); + local->stub = fop_fsetattr_stub (frame, ha_fsetattr, fd, stbuf, valid); STACK_WIND_COOKIE (frame, - ha_fchown_cbk, + ha_setattr_cbk, (void *)(long)local->active, HA_ACTIVE_CHILD(this, local), - HA_ACTIVE_CHILD(this, local)->fops->fchown, - fd, - uid, - gid); + HA_ACTIVE_CHILD(this, local)->fops->fsetattr, + fd, stbuf, valid); return 0; err: - STACK_UNWIND (frame, -1, op_errno, NULL); + STACK_UNWIND (frame, -1, op_errno, NULL, NULL); return 0; } - int32_t + +int32_t ha_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) + struct iatt *prebuf, + struct iatt *postbuf) { int ret = -1; @@ -452,7 +367,8 @@ ha_truncate_cbk (call_frame_t *frame, STACK_UNWIND (frame, op_ret, op_errno, - buf); + prebuf, + postbuf); } return 0; } @@ -473,6 +389,11 @@ ha_truncate (call_frame_t *frame, } local = frame->local; local->stub = fop_truncate_stub (frame, ha_truncate, loc, offset); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } STACK_WIND_COOKIE (frame, ha_truncate_cbk, @@ -483,7 +404,7 @@ ha_truncate (call_frame_t *frame, offset); return 0; err: - STACK_UNWIND (frame, -1, op_errno, NULL); + STACK_UNWIND (frame, -1, op_errno, NULL, NULL); return 0; } @@ -493,7 +414,8 @@ ha_ftruncate_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) + struct iatt *prebuf, + struct iatt *postbuf) { int ret = -1; @@ -503,7 +425,7 @@ ha_ftruncate_cbk (call_frame_t *frame, STACK_UNWIND (frame, op_ret, op_errno, - buf); + prebuf, postbuf); } return 0; } @@ -524,6 +446,11 @@ ha_ftruncate (call_frame_t *frame, } local = frame->local; local->stub = fop_ftruncate_stub (frame, ha_ftruncate, fd, offset); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } STACK_WIND_COOKIE (frame, ha_ftruncate_cbk, @@ -534,58 +461,12 @@ ha_ftruncate (call_frame_t *frame, offset); return 0; err: - STACK_UNWIND (frame, -1, op_errno, NULL); - return 0; -} - -int32_t -ha_utimens_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) -{ - int ret = -1; + local = frame->local; + frame->local = NULL; - ret = ha_handle_cbk (frame, cookie, op_ret, op_errno); - - if (ret == 0) { - STACK_UNWIND (frame, - op_ret, - op_errno, - buf); - } - return 0; -} - -int32_t -ha_utimens (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - struct timespec tv[2]) -{ - ha_local_t *local = NULL; - int op_errno = 0; - - op_errno = ha_alloc_init_inode (frame, loc->inode); - if (op_errno < 0) { - op_errno = -op_errno; - goto err; - } - local = frame->local; - local->stub = fop_utimens_stub (frame, ha_utimens, loc, tv); + STACK_UNWIND (frame, -1, op_errno, NULL, NULL); - STACK_WIND_COOKIE (frame, - ha_utimens_cbk, - (void *)(long)local->active, - HA_ACTIVE_CHILD(this, local), - HA_ACTIVE_CHILD(this, local)->fops->utimens, - loc, - tv); - return 0; -err: - STACK_UNWIND (frame, -1, op_errno, NULL); + ha_local_wipe (local); return 0; } @@ -624,6 +505,11 @@ ha_access (call_frame_t *frame, } local = frame->local; local->stub = fop_access_stub (frame, ha_access, loc, mask); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } STACK_WIND_COOKIE (frame, ha_access_cbk, @@ -634,7 +520,12 @@ ha_access (call_frame_t *frame, mask); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno); + + ha_local_wipe (local); return 0; } @@ -645,7 +536,8 @@ ha_readlink_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - const char *path) + const char *path, + struct iatt *sbuf) { int ret = -1; @@ -655,7 +547,8 @@ ha_readlink_cbk (call_frame_t *frame, STACK_UNWIND (frame, op_ret, op_errno, - path); + path, + sbuf); } return 0; } @@ -686,7 +579,7 @@ ha_readlink (call_frame_t *frame, size); return 0; err: - STACK_UNWIND (frame, -1, op_errno, NULL); + STACK_UNWIND (frame, -1, op_errno, NULL, NULL); return 0; } @@ -697,8 +590,9 @@ ha_mknod_lookup_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf, - dict_t *dict) + struct iatt *buf, + dict_t *dict, + struct iatt *postparent) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -742,12 +636,13 @@ ha_mknod_lookup_cbk (call_frame_t *frame, if (cnt == 0) { call_stub_t *stub = local->stub; - FREE (local->state); + GF_FREE (local->state); STACK_UNWIND (frame, local->op_ret, local->op_errno, local->stub->args.mknod.loc.inode, - &local->buf); + &local->buf, &local->preparent, + &local->postparent); call_stub_destroy (stub); } return 0; @@ -760,7 +655,9 @@ ha_mknod_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf) + struct iatt *buf, + struct iatt *preparent, + struct iatt *postparent) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -798,6 +695,8 @@ ha_mknod_cbk (call_frame_t *frame, local->op_ret = 0; local->first_success = 1; local->buf = *buf; + local->preparent = *preparent; + local->postparent = *postparent; } cnt = --local->call_count; for (i = local->active + 1; i < child_count; i++) { @@ -807,9 +706,11 @@ ha_mknod_cbk (call_frame_t *frame, if (cnt == 0 || i == child_count) { call_stub_t *stub = local->stub; - FREE (local->state); + GF_FREE (local->state); stub = local->stub; - STACK_UNWIND (frame, local->op_ret, local->op_errno, local->stub->args.mknod.loc.inode, &local->buf); + STACK_UNWIND (frame, local->op_ret, local->op_errno, + local->stub->args.mknod.loc.inode, &local->buf, + &local->preparent, &local->postparent); call_stub_destroy (stub); return 0; } @@ -854,20 +755,46 @@ ha_mknod (call_frame_t *frame, ha_private_t *pvt = NULL; int child_count = 0, i = 0; char *stateino = NULL; + int32_t op_errno = EINVAL; local = frame->local; pvt = this->private; child_count = pvt->child_count; - frame->local = local = CALLOC (1, sizeof (*local)); + frame->local = local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!local) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + local->stub = fop_mknod_stub (frame, ha_mknod, loc, mode, rdev); + if (!local->stub) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; local->op_errno = ENOTCONN; - local->state = CALLOC (1, child_count); + local->state = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!local->state) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + memcpy (local->state, pvt->state, child_count); local->active = -1; - stateino = CALLOC (1, child_count); + stateino = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!stateino) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + inode_ctx_put (loc->inode, this, (uint64_t)(long)stateino); for (i = 0; i < child_count; i++) { @@ -884,6 +811,14 @@ ha_mknod (call_frame_t *frame, HA_ACTIVE_CHILD(this, local)->fops->mknod, loc, mode, rdev); return 0; + +err: + local = frame->local; + frame->local = NULL; + + STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL, NULL); + ha_local_wipe (local); + return 0; } @@ -894,8 +829,9 @@ ha_mkdir_lookup_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf, - dict_t *dict) + struct iatt *buf, + dict_t *dict, + struct iatt *postparent) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -931,12 +867,12 @@ ha_mkdir_lookup_cbk (call_frame_t *frame, if (cnt == 0) { call_stub_t *stub = local->stub; - FREE (local->state); + GF_FREE (local->state); STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->stub->args.mkdir.loc.inode, - &local->buf); + local->stub->args.mkdir.loc.inode, &local->buf, + &local->preparent, &local->postparent); call_stub_destroy (stub); } return 0; @@ -949,7 +885,9 @@ ha_mkdir_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf) + struct iatt *buf, + struct iatt *preparent, + struct iatt *postparent) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -983,6 +921,8 @@ ha_mkdir_cbk (call_frame_t *frame, local->op_ret = 0; local->first_success = 1; local->buf = *buf; + local->preparent = *preparent; + local->postparent = *postparent; } cnt = --local->call_count; for (i = local->active + 1; i < child_count; i++) { @@ -992,9 +932,11 @@ ha_mkdir_cbk (call_frame_t *frame, if (cnt == 0 || i == child_count) { call_stub_t *stub = local->stub; - FREE (local->state); + GF_FREE (local->state); stub = local->stub; - STACK_UNWIND (frame, local->op_ret, local->op_errno, local->stub->args.mkdir.loc.inode, &local->buf); + STACK_UNWIND (frame, local->op_ret, local->op_errno, + local->stub->args.mkdir.loc.inode, &local->buf, + &local->preparent, &local->postparent); call_stub_destroy (stub); return 0; } @@ -1037,20 +979,46 @@ ha_mkdir (call_frame_t *frame, ha_private_t *pvt = NULL; int child_count = 0, i = 0; char *stateino = NULL; + int32_t op_errno = EINVAL; local = frame->local; pvt = this->private; child_count = pvt->child_count; - frame->local = local = CALLOC (1, sizeof (*local)); + frame->local = local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!frame->local) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + local->stub = fop_mkdir_stub (frame, ha_mkdir, loc, mode); + if (!local->stub) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; local->op_errno = ENOTCONN; - local->state = CALLOC (1, child_count); + local->state = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!local->state) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + memcpy (local->state, pvt->state, child_count); local->active = -1; - stateino = CALLOC (1, child_count); + stateino = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!stateino) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + inode_ctx_put (loc->inode, this, (uint64_t)(long)stateino); for (i = 0; i < child_count; i++) { if (local->state[i]) { @@ -1066,6 +1034,13 @@ ha_mkdir (call_frame_t *frame, HA_ACTIVE_CHILD(this, local)->fops->mkdir, loc, mode); return 0; +err: + local = frame->local; + frame->local = NULL; + + STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL, NULL); + ha_local_wipe (local); + return 0; } int32_t @@ -1073,13 +1048,15 @@ ha_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, - int32_t op_errno) + int32_t op_errno, + struct iatt *preparent, + struct iatt *postparent) { int ret = -1; ret = ha_handle_cbk (frame, cookie, op_ret, op_errno); if (ret == 0) { - STACK_UNWIND (frame, op_ret, op_errno); + STACK_UNWIND (frame, op_ret, op_errno, preparent, postparent); } return 0; } @@ -1100,6 +1077,11 @@ ha_unlink (call_frame_t *frame, } local = frame->local; local->stub = fop_unlink_stub (frame, ha_unlink, loc); + if (!local->stub) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } STACK_WIND_COOKIE (frame, ha_unlink_cbk, @@ -1109,7 +1091,7 @@ ha_unlink (call_frame_t *frame, loc); return 0; err: - STACK_UNWIND (frame, -1, op_errno); + STACK_UNWIND (frame, -1, op_errno, NULL, NULL); return 0; } @@ -1118,7 +1100,9 @@ ha_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, - int32_t op_errno) + int32_t op_errno, + struct iatt *preparent, + struct iatt *postparent) { int ret = -1; @@ -1127,7 +1111,9 @@ ha_rmdir_cbk (call_frame_t *frame, if (ret == 0) { STACK_UNWIND (frame, op_ret, - op_errno); + op_errno, + preparent, + postparent); } return 0; } @@ -1147,6 +1133,11 @@ ha_rmdir (call_frame_t *frame, } local = frame->local; local->stub = fop_rmdir_stub (frame, ha_rmdir, loc); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } STACK_WIND_COOKIE (frame, ha_rmdir_cbk, @@ -1156,7 +1147,7 @@ ha_rmdir (call_frame_t *frame, loc); return 0; err: - STACK_UNWIND (frame, -1, op_errno); + STACK_UNWIND (frame, -1, op_errno, NULL, NULL); return 0; } @@ -1168,8 +1159,9 @@ ha_symlink_lookup_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf, - dict_t *dict) + struct iatt *buf, + dict_t *dict, + struct iatt *postparent) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -1205,12 +1197,12 @@ ha_symlink_lookup_cbk (call_frame_t *frame, if (cnt == 0) { call_stub_t *stub = local->stub; - FREE (local->state); + GF_FREE (local->state); STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->stub->args.symlink.loc.inode, - &local->buf); + local->stub->args.symlink.loc.inode, &local->buf, + &local->preparent, &local->postparent); call_stub_destroy (stub); } return 0; @@ -1223,7 +1215,9 @@ ha_symlink_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf) + struct iatt *buf, + struct iatt *preparent, + struct iatt *postparent) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -1256,6 +1250,8 @@ ha_symlink_cbk (call_frame_t *frame, local->op_ret = 0; local->first_success = 1; local->buf = *buf; + local->preparent = *preparent; + local->postparent = *postparent; } cnt = --local->call_count; for (i = local->active + 1; i < child_count; i++) { @@ -1265,10 +1261,11 @@ ha_symlink_cbk (call_frame_t *frame, if (cnt == 0 || i == child_count) { call_stub_t *stub = local->stub; - FREE (local->state); + GF_FREE (local->state); stub = local->stub; STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->stub->args.symlink.loc.inode, &local->buf); + local->stub->args.symlink.loc.inode, &local->buf, + &local->preparent, &local->postparent); call_stub_destroy (stub); return 0; } @@ -1311,20 +1308,46 @@ ha_symlink (call_frame_t *frame, ha_private_t *pvt = NULL; int child_count = 0, i = 0; char *stateino = NULL; + int32_t op_errno = EINVAL; local = frame->local; pvt = this->private; child_count = pvt->child_count; - frame->local = local = CALLOC (1, sizeof (*local)); + frame->local = local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!local) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + local->stub = fop_symlink_stub (frame, ha_symlink, linkname, loc); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + local->op_ret = -1; local->op_errno = ENOTCONN; - local->state = CALLOC (1, child_count); + local->state = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!local->state) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + memcpy (local->state, pvt->state, child_count); local->active = -1; - stateino = CALLOC (1, child_count); + stateino = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!stateino) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + inode_ctx_put (loc->inode, this, (uint64_t)(long)stateino); for (i = 0; i < child_count; i++) { @@ -1342,6 +1365,12 @@ ha_symlink (call_frame_t *frame, HA_ACTIVE_CHILD(this, local)->fops->symlink, linkname, loc); return 0; +err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL, NULL); + ha_local_wipe (local); + return 0; } int32_t @@ -1350,14 +1379,19 @@ ha_rename_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) + struct iatt *buf, + struct iatt *preoldparent, + struct iatt *postoldparent, + struct iatt *prenewparent, + struct iatt *postnewparent) { int ret = -1; ret = ha_handle_cbk (frame, cookie, op_ret, op_errno); if (ret == 0) { - STACK_UNWIND (frame, op_ret, op_errno, buf); + STACK_UNWIND (frame, op_ret, op_errno, buf, preoldparent, + postoldparent, prenewparent, postnewparent); } return 0; } @@ -1378,6 +1412,12 @@ ha_rename (call_frame_t *frame, } local = frame->local; local->stub = fop_rename_stub (frame, ha_rename, oldloc, newloc); + if (!local->stub) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + STACK_WIND_COOKIE (frame, ha_rename_cbk, (void *)(long)local->active, @@ -1386,7 +1426,7 @@ ha_rename (call_frame_t *frame, oldloc, newloc); return 0; err: - STACK_UNWIND (frame, -1, op_errno, NULL); + STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL); return 0; } @@ -1397,8 +1437,9 @@ ha_link_lookup_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf, - dict_t *dict) + struct iatt *buf, + dict_t *dict, + struct iatt *postparent) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -1434,12 +1475,12 @@ ha_link_lookup_cbk (call_frame_t *frame, if (cnt == 0) { call_stub_t *stub = local->stub; - FREE (local->state); + GF_FREE (local->state); STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->stub->args.link.oldloc.inode, - &local->buf); + local->stub->args.link.oldloc.inode, &local->buf, + &local->preparent, &local->postparent); call_stub_destroy (stub); } return 0; @@ -1452,7 +1493,9 @@ ha_link_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf) + struct iatt *buf, + struct iatt *preparent, + struct iatt *postparent) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -1485,6 +1528,8 @@ ha_link_cbk (call_frame_t *frame, local->op_ret = 0; local->first_success = 1; local->buf = *buf; + local->preparent = *preparent; + local->postparent = *postparent; } cnt = --local->call_count; for (i = local->active + 1; i < child_count; i++) { @@ -1494,9 +1539,11 @@ ha_link_cbk (call_frame_t *frame, if (cnt == 0 || i == child_count) { call_stub_t *stub = local->stub; - FREE (local->state); + GF_FREE (local->state); stub = local->stub; - STACK_UNWIND (frame, local->op_ret, local->op_errno, local->stub->args.link.oldloc.inode, &local->buf); + STACK_UNWIND (frame, local->op_ret, local->op_errno, + local->stub->args.link.oldloc.inode, &local->buf, + &local->preparent, &local->postparent); call_stub_destroy (stub); return 0; } @@ -1539,7 +1586,7 @@ ha_link (call_frame_t *frame, ha_private_t *pvt = NULL; int child_count = 0, i = 0; char *stateino = NULL; - int32_t ret = 0; + int32_t ret = 0, op_errno = 0; uint64_t tmp_stateino = 0; ret = inode_ctx_get (newloc->inode, this, &tmp_stateino); @@ -1551,7 +1598,8 @@ ha_link (call_frame_t *frame, if (stateino == NULL) { gf_log (this->name, GF_LOG_ERROR, "newloc->inode's ctx is NULL, returning EINVAL"); - STACK_UNWIND (frame, -1, EINVAL, oldloc->inode, NULL); + STACK_UNWIND (frame, -1, EINVAL, oldloc->inode, NULL, NULL, + NULL); return 0; } @@ -1559,11 +1607,30 @@ ha_link (call_frame_t *frame, pvt = this->private; child_count = pvt->child_count; - frame->local = local = CALLOC (1, sizeof (*local)); + frame->local = local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!frame->local) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + local->stub = fop_link_stub (frame, ha_link, oldloc, newloc); + if (!local->stub) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; local->op_errno = ENOTCONN; - local->state = CALLOC (1, child_count); + local->state = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!local->state) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + memcpy (local->state, pvt->state, child_count); local->active = -1; @@ -1582,6 +1649,11 @@ ha_link (call_frame_t *frame, oldloc, newloc); return 0; +err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL, NULL); + return 0; } int32_t @@ -1592,7 +1664,9 @@ ha_create_cbk (call_frame_t *frame, int32_t op_errno, fd_t *fd, inode_t *inode, - struct stat *buf) + struct iatt *buf, + struct iatt *preparent, + struct iatt *postparent) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -1640,6 +1714,8 @@ ha_create_cbk (call_frame_t *frame, if (local->op_ret == -1) { local->op_ret = 0; local->buf = *buf; + local->preparent = *preparent; + local->postparent = *postparent; local->first_success = 1; } local->stub->args.create.flags &= (~O_EXCL); @@ -1658,8 +1734,9 @@ ha_create_cbk (call_frame_t *frame, call_stub_t *stub = local->stub; STACK_UNWIND (frame, local->op_ret, local->op_errno, stub->args.create.fd, - stub->args.create.loc.inode, &local->buf); - FREE (state); + stub->args.create.loc.inode, &local->buf, + &local->preparent, &local->postparent); + GF_FREE (state); call_stub_destroy (stub); return 0; } @@ -1695,6 +1772,7 @@ ha_create (call_frame_t *frame, char *stateino = NULL; xlator_t **children = NULL; hafd_t *hafdp = NULL; + int32_t op_errno = EINVAL; local = frame->local; pvt = this->private; @@ -1702,9 +1780,28 @@ ha_create (call_frame_t *frame, children = pvt->children; if (local == NULL) { - local = frame->local = CALLOC (1, sizeof (*local)); + frame->local = local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!local) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + local->stub = fop_create_stub (frame, ha_create, loc, flags, mode, fd); - local->state = CALLOC (1, child_count); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + + local->state = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!local->state) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + local->active = -1; local->op_ret = -1; local->op_errno = ENOTCONN; @@ -1718,10 +1815,34 @@ ha_create (call_frame_t *frame, } } /* FIXME handle active -1 */ - stateino = CALLOC (1, child_count); - hafdp = CALLOC (1, sizeof (*hafdp)); - hafdp->fdstate = CALLOC (1, child_count); - hafdp->path = strdup(loc->path); + stateino = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!stateino) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + + hafdp = GF_CALLOC (1, sizeof (*hafdp), gf_ha_mt_hafd_t); + if (!hafdp) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + + hafdp->fdstate = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!hafdp->fdstate) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + + hafdp->path = gf_strdup(loc->path); + if (!hafdp->path) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + LOCK_INIT (&hafdp->lock); fd_ctx_set (fd, this, (uint64_t)(long)hafdp); inode_ctx_put (loc->inode, this, (uint64_t)(long)stateino); @@ -1733,6 +1854,26 @@ ha_create (call_frame_t *frame, children[local->active]->fops->create, loc, flags, mode, fd); return 0; +err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL); + ha_local_wipe (local); + + if (stateino) { + GF_FREE (stateino); + stateino = NULL; + } + + if (hafdp) { + GF_FREE (hafdp->fdstate); + + GF_FREE (hafdp->path); + + GF_FREE (hafdp); + } + + return 0; } int32_t @@ -1789,7 +1930,7 @@ int32_t ha_open (call_frame_t *frame, xlator_t *this, loc_t *loc, - int32_t flags, fd_t *fd) + int32_t flags, fd_t *fd, int wbflags) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -1798,6 +1939,7 @@ ha_open (call_frame_t *frame, int cnt = 0, i, child_count = 0, ret = 0; hafd_t *hafdp = NULL; uint64_t tmp_stateino = 0; + int32_t op_errno = ENOMEM; local = frame->local; pvt = this->private; @@ -1805,14 +1947,39 @@ ha_open (call_frame_t *frame, child_count = pvt->child_count; - local = frame->local = CALLOC (1, sizeof (*local)); + frame->local = local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!local) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + local->op_ret = -1; local->op_errno = ENOTCONN; local->fd = fd; - hafdp = CALLOC (1, sizeof (*hafdp)); - hafdp->fdstate = CALLOC (1, child_count); - hafdp->path = strdup (loc->path); + hafdp = GF_CALLOC (1, sizeof (*hafdp), gf_ha_mt_hafd_t); + if (!hafdp) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + + hafdp->fdstate = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!hafdp->fdstate) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + + hafdp->path = gf_strdup (loc->path); + if (!hafdp->path) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + hafdp->active = -1; if (pvt->pref_subvol == -1) { hafdp->active = fd->inode->ino % child_count; @@ -1833,12 +2000,33 @@ ha_open (call_frame_t *frame, ha_open_cbk, children[i], children[i]->fops->open, - loc, flags, fd); + loc, flags, fd, wbflags); if (--cnt == 0) break; } } return 0; +err: + local = frame->local; + frame->local = NULL; + + STACK_UNWIND (frame, -1, op_errno, fd); + if (hafdp) { + if (hafdp->fdstate) { + GF_FREE (hafdp->fdstate); + hafdp->fdstate = NULL; + } + + if (hafdp->path) { + GF_FREE (hafdp->path); + hafdp->path = NULL; + } + + GF_FREE (hafdp); + } + + ha_local_wipe (local); + return 0; } int32_t @@ -1849,7 +2037,7 @@ ha_readv_cbk (call_frame_t *frame, int32_t op_errno, struct iovec *vector, int32_t count, - struct stat *stbuf, + struct iatt *stbuf, struct iobref *iobref) { int ret = 0; @@ -1885,6 +2073,11 @@ ha_readv (call_frame_t *frame, } local = frame->local; local->stub = fop_readv_stub (frame, ha_readv, fd, size, offset); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } STACK_WIND_COOKIE (frame, ha_readv_cbk, @@ -1896,7 +2089,12 @@ ha_readv (call_frame_t *frame, offset); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno, NULL, 0, NULL, NULL); + + ha_local_wipe (local); return 0; } @@ -1906,7 +2104,8 @@ ha_writev_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *stbuf) + struct iatt *prebuf, + struct iatt *postbuf) { int ret = 0; ret = ha_handle_cbk (frame, cookie, op_ret, op_errno); @@ -1915,7 +2114,8 @@ ha_writev_cbk (call_frame_t *frame, STACK_UNWIND (frame, op_ret, op_errno, - stbuf); + prebuf, + postbuf); } return 0; } @@ -1938,7 +2138,13 @@ ha_writev (call_frame_t *frame, goto err; } local = frame->local; - local->stub = fop_writev_stub (frame, ha_writev, fd, vector, count, off, iobref); + local->stub = fop_writev_stub (frame, ha_writev, fd, vector, count, off, + iobref); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } STACK_WIND_COOKIE (frame, ha_writev_cbk, @@ -1952,7 +2158,12 @@ ha_writev (call_frame_t *frame, iobref); return 0; err: - STACK_UNWIND (frame, -1, op_errno, NULL); + local = frame->local; + frame->local = NULL; + + STACK_UNWIND (frame, -1, op_errno, NULL, NULL); + + ha_local_wipe (local); return 0; } @@ -1989,6 +2200,12 @@ ha_flush (call_frame_t *frame, } local = frame->local; local->stub = fop_flush_stub (frame, ha_flush, fd); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + STACK_WIND_COOKIE (frame, ha_flush_cbk, (void *)(long)local->active, @@ -1997,7 +2214,12 @@ ha_flush (call_frame_t *frame, fd); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno); + + ha_local_wipe (local); return 0; } @@ -2007,7 +2229,9 @@ ha_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, - int32_t op_errno) + int32_t op_errno, + struct iatt *prebuf, + struct iatt *postbuf) { int ret = 0; ret = ha_handle_cbk (frame, cookie, op_ret, op_errno); @@ -2036,6 +2260,12 @@ ha_fsync (call_frame_t *frame, } local = frame->local; local->stub = fop_fsync_stub (frame, ha_fsync, fd, flags); + if (!local->stub) { + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + op_errno = ENOMEM; + goto err; + } + STACK_WIND_COOKIE (frame, ha_fsync_cbk, (void *)(long)local->active, @@ -2045,7 +2275,12 @@ ha_fsync (call_frame_t *frame, flags); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno); + + ha_local_wipe (local); return 0; } @@ -2055,7 +2290,7 @@ ha_fstat_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) + struct iatt *buf) { int ret = 0; @@ -2086,6 +2321,12 @@ ha_fstat (call_frame_t *frame, } local = frame->local; local->stub = fop_fstat_stub (frame, ha_fstat, fd); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + STACK_WIND_COOKIE (frame, ha_fstat_cbk, (void *)(long)local->active, @@ -2094,7 +2335,12 @@ ha_fstat (call_frame_t *frame, fd); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno, NULL); + + ha_local_wipe (local); return 0; } @@ -2160,20 +2406,46 @@ ha_opendir (call_frame_t *frame, int cnt = 0, i, child_count = 0, ret = 0; hafd_t *hafdp = NULL; uint64_t tmp_stateino = 0; + int32_t op_errno = EINVAL; local = frame->local; pvt = this->private; children = pvt->children; child_count = pvt->child_count; - local = frame->local = CALLOC (1, sizeof (*local)); + frame->local = local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!local) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + local->op_ret = -1; local->op_errno = ENOTCONN; local->fd = fd; - hafdp = CALLOC (1, sizeof (*hafdp)); - hafdp->fdstate = CALLOC (1, child_count); - hafdp->path = strdup (loc->path); + hafdp = GF_CALLOC (1, sizeof (*hafdp), gf_ha_mt_hafd_t); + if (!hafdp) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + + hafdp->fdstate = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!hafdp->fdstate) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + + hafdp->path = gf_strdup (loc->path); + if (!hafdp->path) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + LOCK_INIT (&hafdp->lock); fd_ctx_set (fd, this, (uint64_t)(long)hafdp); ret = inode_ctx_get (loc->inode, this, &tmp_stateino); @@ -2198,6 +2470,26 @@ ha_opendir (call_frame_t *frame, } } return 0; +err: + local = frame->local; + frame->local = NULL; + + STACK_UNWIND (frame, -1, op_errno, NULL); + ha_local_wipe (local); + if (hafdp) { + if (hafdp->fdstate) { + GF_FREE (hafdp->fdstate); + hafdp->fdstate = NULL; + } + + if (hafdp->path) { + GF_FREE (hafdp->path); + hafdp->path = NULL; + } + + GF_FREE (hafdp); + } + return 0; } int32_t @@ -2239,7 +2531,14 @@ ha_getdents (call_frame_t *frame, goto err; } local = frame->local; - local->stub = fop_getdents_stub (frame, ha_getdents, fd, size, offset, flag); + local->stub = fop_getdents_stub (frame, ha_getdents, fd, size, offset, + flag); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + STACK_WIND_COOKIE (frame, ha_getdents_cbk, (void *)(long)local->active, @@ -2251,7 +2550,12 @@ ha_getdents (call_frame_t *frame, flag); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno, NULL, 0); + + ha_local_wipe (local); return 0; } @@ -2292,7 +2596,13 @@ ha_setdents (call_frame_t *frame, } local = frame->local; - local->stub = fop_setdents_stub (frame, ha_setdents, fd, flags, entries, count); + local->stub = fop_setdents_stub (frame, ha_setdents, fd, flags, entries, + count); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } STACK_WIND_COOKIE (frame, ha_setdents_cbk, @@ -2305,7 +2615,12 @@ ha_setdents (call_frame_t *frame, count); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno); + + ha_local_wipe (local); return 0; } @@ -2343,6 +2658,12 @@ ha_fsyncdir (call_frame_t *frame, } local = frame->local; local->stub = fop_fsyncdir_stub (frame, ha_fsyncdir, fd, flags); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + STACK_WIND_COOKIE (frame, ha_fsyncdir_cbk, (void *)(long)local->active, @@ -2352,7 +2673,12 @@ ha_fsyncdir (call_frame_t *frame, flags); return 0; err: - STACK_UNWIND (frame, -1, op_errno); + local = frame->local; + frame->local = NULL; + + STACK_UNWIND (frame, -1, op_errno, NULL, NULL); + + ha_local_wipe (local); return 0; } @@ -2365,15 +2691,27 @@ ha_statfs_cbk (call_frame_t *frame, int32_t op_errno, struct statvfs *buf) { - int ret = -1; + ha_local_t *local = NULL; + ha_private_t *priv = NULL; - ret = ha_handle_cbk (frame, cookie, op_ret, op_errno); - if (ret == 0) { - STACK_UNWIND (frame, - op_ret, - op_errno, - buf); - } + local = frame->local; + if (-1 == op_ret) { + local->active = (local->active + 1) % priv->child_count; + local->tries--; + if (!local->tries) + goto out; + + STACK_WIND (frame, ha_statfs_cbk, + HA_ACTIVE_CHILD(this, local), + HA_ACTIVE_CHILD(this, local)->fops->statfs, + &local->loc); + return 0; + } + + out: + loc_wipe (&local->loc); + STACK_UNWIND (frame, op_ret, op_errno, buf); + return 0; } @@ -2382,23 +2720,29 @@ ha_statfs (call_frame_t *frame, xlator_t *this, loc_t *loc) { - ha_local_t *local = NULL; - int op_errno = 0; - - op_errno = ha_alloc_init_inode (frame, loc->inode); - if (op_errno < 0) { - op_errno = -op_errno; - goto err; - } - local = frame->local; - - local->stub = fop_statfs_stub (frame, ha_statfs, loc); - STACK_WIND_COOKIE (frame, - ha_statfs_cbk, - (void *)(long)local->active, - HA_ACTIVE_CHILD(this, local), - HA_ACTIVE_CHILD(this, local)->fops->statfs, - loc); + ha_private_t *priv = NULL; + ha_local_t *local = NULL; + int op_errno = 0; + + /* The normal way of handling failover doesn't work here + * as loc->inode may be null in this case. + */ + local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!local) { + op_errno = ENOMEM; + goto err; + } + priv = this->private; + frame->local = local; + local->active = priv->pref_subvol; + if (-1 == local->active) + local->active = 0; + local->tries = priv->child_count; + loc_copy (&local->loc, loc); + + STACK_WIND (frame, ha_statfs_cbk, HA_ACTIVE_CHILD(this, local), + HA_ACTIVE_CHILD(this, local)->fops->statfs, loc); return 0; err: STACK_UNWIND (frame, -1, op_errno, NULL); @@ -2441,6 +2785,12 @@ ha_setxattr (call_frame_t *frame, } local = frame->local; local->stub = fop_setxattr_stub (frame, ha_setxattr, loc, dict, flags); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + STACK_WIND_COOKIE (frame, ha_setxattr_cbk, (void *)(long)local->active, @@ -2451,7 +2801,12 @@ ha_setxattr (call_frame_t *frame, flags); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno); + + ha_local_wipe (local); return 0; } @@ -2492,6 +2847,12 @@ ha_getxattr (call_frame_t *frame, } local = frame->local; local->stub = fop_getxattr_stub (frame, ha_getxattr, loc, name); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + STACK_WIND_COOKIE (frame, ha_getxattr_cbk, (void *)(long)local->active, @@ -2501,7 +2862,12 @@ ha_getxattr (call_frame_t *frame, name); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno, NULL); + + ha_local_wipe (local); return 0; } @@ -2540,6 +2906,11 @@ ha_xattrop (call_frame_t *frame, local = frame->local; local->stub = fop_xattrop_stub (frame, ha_xattrop, loc, flags, dict); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } STACK_WIND_COOKIE (frame, ha_xattrop_cbk, @@ -2551,7 +2922,12 @@ ha_xattrop (call_frame_t *frame, dict); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno, dict); + + ha_local_wipe (local); return 0; } @@ -2587,6 +2963,11 @@ ha_fxattrop (call_frame_t *frame, } local = frame->local; local->stub = fop_fxattrop_stub (frame, ha_fxattrop, fd, flags, dict); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } STACK_WIND_COOKIE (frame, ha_fxattrop_cbk, @@ -2598,7 +2979,12 @@ ha_fxattrop (call_frame_t *frame, dict); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno, dict); + + ha_local_wipe (local); return 0; } @@ -2636,6 +3022,11 @@ ha_removexattr (call_frame_t *frame, local = frame->local; local->stub = fop_removexattr_stub (frame, ha_removexattr, loc, name); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } STACK_WIND_COOKIE (frame, ha_removexattr_cbk, @@ -2646,7 +3037,12 @@ ha_removexattr (call_frame_t *frame, name); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno); + + ha_local_wipe (local); return 0; } @@ -2656,7 +3052,7 @@ ha_lk_setlk_unlck_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct flock *lock) + struct gf_flock *lock) { ha_local_t *local = NULL; int cnt = 0; @@ -2672,7 +3068,7 @@ ha_lk_setlk_unlck_cbk (call_frame_t *frame, if (cnt == 0) { stub = local->stub; - FREE (local->state); + GF_FREE (local->state); if (stub->args.lk.lock.l_type == F_UNLCK) { STACK_UNWIND (frame, local->op_ret, local->op_errno, &stub->args.lk.lock); } else { @@ -2689,7 +3085,7 @@ ha_lk_setlk_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct flock *lock) + struct gf_flock *lock) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -2721,7 +3117,7 @@ ha_lk_setlk_cbk (call_frame_t *frame, } if (i == child_count) { call_stub_t *stub = local->stub; - FREE (local->state); + GF_FREE (local->state); STACK_UNWIND (frame, 0, op_errno, &stub->args.lk.lock); call_stub_destroy (stub); return 0; @@ -2745,7 +3141,7 @@ ha_lk_setlk_cbk (call_frame_t *frame, cnt++; } if (cnt) { - struct flock lock; + struct gf_flock lock; lock = local->stub->args.lk.lock; for (i = 0; i < child_count; i++) { if (state[i]) { @@ -2762,7 +3158,7 @@ ha_lk_setlk_cbk (call_frame_t *frame, } return 0; } else { - FREE (local->state); + GF_FREE (local->state); call_stub_destroy (local->stub); STACK_UNWIND (frame, op_ret, @@ -2779,7 +3175,7 @@ ha_lk_getlk_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct flock *lock) + struct gf_flock *lock) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -2796,7 +3192,7 @@ ha_lk_getlk_cbk (call_frame_t *frame, prev_frame = cookie; if (op_ret == 0) { - FREE (local->state); + GF_FREE (local->state); call_stub_destroy (local->stub); STACK_UNWIND (frame, 0, 0, lock); return 0; @@ -2813,7 +3209,7 @@ ha_lk_getlk_cbk (call_frame_t *frame, } if (i == child_count) { - FREE (local->state); + GF_FREE (local->state); call_stub_destroy (local->stub); STACK_UNWIND (frame, op_ret, op_errno, lock); return 0; @@ -2834,7 +3230,7 @@ ha_lk (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t cmd, - struct flock *lock) + struct gf_flock *lock) { ha_local_t *local = NULL; ha_private_t *pvt = NULL; @@ -2843,6 +3239,7 @@ ha_lk (call_frame_t *frame, int child_count = 0, i = 0, cnt = 0, ret = 0; xlator_t **children = NULL; uint64_t tmp_hafdp = 0; + int32_t op_errno = EINVAL; local = frame->local; pvt = this->private; @@ -2853,7 +3250,14 @@ ha_lk (call_frame_t *frame, gf_log (this->name, GF_LOG_ERROR, "fd_ctx_get failed"); if (local == NULL) { - local = frame->local = CALLOC (1, sizeof (*local)); + local = frame->local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!local) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + local->active = -1; local->op_ret = -1; local->op_errno = ENOTCONN; @@ -2861,12 +3265,24 @@ ha_lk (call_frame_t *frame, hafdp = (hafd_t *)(long)tmp_hafdp; if (local->active == -1) { - STACK_UNWIND (frame, -1, ENOTCONN, NULL); - return 0; + op_errno = ENOTCONN; + goto err; } local->stub = fop_lk_stub (frame, ha_lk, fd, cmd, lock); - local->state = CALLOC (1, child_count); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + + local->state = GF_CALLOC (1, child_count, gf_ha_mt_char); + if (!local->state) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + state = hafdp->fdstate; LOCK (&hafdp->lock); memcpy (local->state, state, child_count); @@ -2914,6 +3330,14 @@ ha_lk (call_frame_t *frame, lock); } return 0; +err: + local = frame->local; + frame->local = NULL; + + STACK_UNWIND (frame, -1, op_errno, NULL); + + ha_local_wipe (local); + return 0; } int32_t @@ -2940,7 +3364,7 @@ ha_inodelk (call_frame_t *frame, const char *volume, loc_t *loc, int32_t cmd, - struct flock *lock) + struct gf_flock *lock) { ha_local_t *local = NULL; int op_errno = 0; @@ -3038,6 +3462,11 @@ ha_checksum (call_frame_t *frame, } local = frame->local; local->stub = fop_checksum_stub (frame, ha_checksum, loc, flag); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } STACK_WIND_COOKIE (frame, ha_checksum_cbk, @@ -3048,17 +3477,18 @@ ha_checksum (call_frame_t *frame, flag); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, op_errno, NULL, NULL); + + ha_local_wipe (local); return 0; } int32_t -ha_readdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - gf_dirent_t *entries) +ha_common_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, gf_dirent_t *entries) { int ret = 0; @@ -3069,11 +3499,15 @@ ha_readdir_cbk (call_frame_t *frame, } int32_t -ha_readdir (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t off) +ha_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t off); + +int32_t +ha_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t off); +int32_t +ha_do_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t off, int whichop) { ha_local_t *local = NULL; int op_errno = 0; @@ -3084,19 +3518,58 @@ ha_readdir (call_frame_t *frame, goto err; } local = frame->local; - local->stub = fop_readdir_stub (frame, ha_readdir, fd, size, off); - STACK_WIND_COOKIE (frame, - ha_readdir_cbk, - (void *)(long)local->active, - HA_ACTIVE_CHILD(this, local), - HA_ACTIVE_CHILD(this, local)->fops->readdir, - fd, size, off); + if (whichop == GF_FOP_READDIR) + local->stub = fop_readdir_stub (frame, ha_readdir, fd, size, + off); + else + local->stub = fop_readdirp_stub (frame, ha_readdirp, fd, size, + off); + if (!local->stub) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } + + if (whichop == GF_FOP_READDIR) + STACK_WIND_COOKIE (frame, ha_common_readdir_cbk, + (void *)(long)local->active, + HA_ACTIVE_CHILD(this, local), + HA_ACTIVE_CHILD(this, local)->fops->readdir, + fd, size, off); + else + STACK_WIND_COOKIE (frame, ha_common_readdir_cbk, + (void *)(long)local->active, + HA_ACTIVE_CHILD(this, local), + HA_ACTIVE_CHILD(this, local)->fops->readdirp, + fd, size, off); return 0; err: + local = frame->local; + frame->local = NULL; + STACK_UNWIND (frame, -1, ENOTCONN, NULL); + + ha_local_wipe (local); return 0; } + +int32_t +ha_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t off) +{ + ha_do_readdir (frame, this, fd, size, off, GF_FOP_READDIR); + return 0; +} + +int32_t +ha_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t off) +{ + ha_do_readdir (frame, this, fd, size, off, GF_FOP_READDIRP); + return 0; +} + /* Management operations */ int32_t @@ -3157,8 +3630,16 @@ ha_stats (call_frame_t *frame, ha_private_t *pvt = NULL; xlator_t **children = NULL; int i = 0; + int32_t op_errno = EINVAL; + + local = frame->local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!local) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } - local = frame->local = CALLOC (1, sizeof (*local)); pvt = this->private; children = pvt->children; for (i = 0; i < pvt->child_count; i++) { @@ -3167,8 +3648,8 @@ ha_stats (call_frame_t *frame, } if (i == pvt->child_count) { - STACK_UNWIND (frame, -1, ENOTCONN, NULL); - return 0; + op_errno = ENOTCONN; + goto err; } local->flags = flags; @@ -3178,6 +3659,16 @@ ha_stats (call_frame_t *frame, children[i]->mops->stats, flags); return 0; + +err: + local = frame->local; + frame->local = NULL; + + STACK_UNWIND (frame, -1, ENOTCONN, NULL); + + ha_local_wipe (local); + return 0; + } @@ -3241,20 +3732,27 @@ ha_getspec (call_frame_t *frame, ha_private_t *pvt = NULL; xlator_t **children = NULL; int i = 0; + int32_t op_errno = EINVAL; + + local = frame->local = GF_CALLOC (1, sizeof (*local), + gf_ha_mt_ha_local_t); + if (!local) { + op_errno = ENOMEM; + gf_log (this->name, GF_LOG_ERROR, "out of memory"); + goto err; + } - local = frame->local = CALLOC (1, sizeof (*local)); pvt = this->private; children = pvt->children; - local = frame->local = CALLOC (1, sizeof (*local)); for (i = 0; i < pvt->child_count; i++) { if (pvt->state[i]) break; } if (i == pvt->child_count) { - STACK_UNWIND (frame, -1, ENOTCONN, NULL); - return 0; + op_errno = ENOTCONN; + goto err; } local->flags = flags; local->pattern = (char *)key; @@ -3265,6 +3763,15 @@ ha_getspec (call_frame_t *frame, children[i]->mops->getspec, key, flags); return 0; +err: + local = frame->local; + frame->local = NULL; + + STACK_UNWIND (frame, -1, ENOTCONN, NULL); + + ha_local_wipe (local); + return 0; + } int32_t @@ -3282,8 +3789,8 @@ ha_closedir (xlator_t *this, } hafdp = (hafd_t *)(long)tmp_hafdp; - FREE (hafdp->fdstate); - FREE (hafdp->path); + GF_FREE (hafdp->fdstate); + GF_FREE (hafdp->path); LOCK_DESTROY (&hafdp->lock); return 0; } @@ -3303,8 +3810,8 @@ ha_close (xlator_t *this, } hafdp = (hafd_t *)(long)tmp_hafdp; - FREE (hafdp->fdstate); - FREE (hafdp->path); + GF_FREE (hafdp->fdstate); + GF_FREE (hafdp->path); LOCK_DESTROY (&hafdp->lock); return 0; } @@ -3375,6 +3882,25 @@ notify (xlator_t *this, return 0; } +int32_t +mem_acct_init (xlator_t *this) +{ + int ret = -1; + + if (!this) + return ret; + + ret = xlator_mem_acct_init (this, gf_ha_mt_end + 1); + + if (ret != 0) { + gf_log (this->name, GF_LOG_ERROR, "Memory accounting init" + "failed"); + return ret; + } + + return ret; +} + int init (xlator_t *this) { @@ -3382,6 +3908,7 @@ init (xlator_t *this) xlator_list_t *trav = NULL; int count = 0, ret = 0; + if (!this->children) { gf_log (this->name,GF_LOG_ERROR, "FATAL: ha should have one or more child defined"); @@ -3394,7 +3921,7 @@ init (xlator_t *this) } trav = this->children; - pvt = CALLOC (1, sizeof (ha_private_t)); + pvt = GF_CALLOC (1, sizeof (ha_private_t), gf_ha_mt_ha_private_t); ret = dict_get_int32 (this->options, "preferred-subvolume", &pvt->pref_subvol); @@ -3409,7 +3936,8 @@ init (xlator_t *this) } pvt->child_count = count; - pvt->children = CALLOC (count, sizeof (xlator_t*)); + pvt->children = GF_CALLOC (count, sizeof (xlator_t*), + gf_ha_mt_xlator_t); trav = this->children; count = 0; @@ -3419,7 +3947,7 @@ init (xlator_t *this) trav = trav->next; } - pvt->state = CALLOC (1, count); + pvt->state = GF_CALLOC (1, count, gf_ha_mt_char); this->private = pvt; return 0; } @@ -3429,7 +3957,7 @@ fini (xlator_t *this) { ha_private_t *priv = NULL; priv = this->private; - FREE (priv); + GF_FREE (priv); return; } @@ -3445,10 +3973,7 @@ struct xlator_fops fops = { .symlink = ha_symlink, .rename = ha_rename, .link = ha_link, - .chmod = ha_chmod, - .chown = ha_chown, .truncate = ha_truncate, - .utimens = ha_utimens, .create = ha_create, .open = ha_open, .readv = ha_readv, @@ -3461,24 +3986,20 @@ struct xlator_fops fops = { .removexattr = ha_removexattr, .opendir = ha_opendir, .readdir = ha_readdir, + .readdirp = ha_readdirp, .getdents = ha_getdents, .fsyncdir = ha_fsyncdir, .access = ha_access, .ftruncate = ha_ftruncate, .fstat = ha_fstat, .lk = ha_lk, - .fchmod = ha_fchmod, - .fchown = ha_fchown, .setdents = ha_setdents, .lookup_cbk = ha_lookup_cbk, .checksum = ha_checksum, .xattrop = ha_xattrop, - .fxattrop = ha_fxattrop -}; - -struct xlator_mops mops = { - .stats = ha_stats, - .getspec = ha_getspec, + .fxattrop = ha_fxattrop, + .setattr = ha_setattr, + .fsetattr = ha_fsetattr, }; struct xlator_cbks cbks = { diff --git a/xlators/cluster/ha/src/ha.h b/xlators/cluster/ha/src/ha.h index 7e4898ceb..e2ed7eaa6 100644 --- a/xlators/cluster/ha/src/ha.h +++ b/xlators/cluster/ha/src/ha.h @@ -1,25 +1,17 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. -*/ + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ #ifndef __HA_H_ #define __HA_H_ +#include "ha-mem-types.h" + typedef struct { call_stub_t *stub; int32_t op_ret, op_errno; @@ -27,8 +19,10 @@ typedef struct { int32_t call_count; char *state, *pattern; dict_t *dict; - loc_t *loc; - struct stat buf; + loc_t loc; + struct iatt buf; + struct iatt postparent; + struct iatt preparent; fd_t *fd; inode_t *inode; int32_t flags; diff --git a/xlators/cluster/map/src/Makefile.am b/xlators/cluster/map/src/Makefile.am index 26e19137a..a278b05e2 100644 --- a/xlators/cluster/map/src/Makefile.am +++ b/xlators/cluster/map/src/Makefile.am @@ -1,15 +1,16 @@ xlator_LTLIBRARIES = map.la xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/testing/cluster -map_la_LDFLAGS = -module -avoidversion +map_la_LDFLAGS = -module -avoid-version map_la_SOURCES = map.c map-helper.c map_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la noinst_HEADERS = map.h -AM_CFLAGS = -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -Wall -D$(GF_HOST_OS) \ - -I$(top_srcdir)/libglusterfs/src -shared -nostartfiles $(GF_CFLAGS) +AM_CPPFLAGS = $(GF_CPPFLAGS) -I$(top_srcdir)/libglusterfs/src + +AM_CFLAGS = -Wall $(GF_CFLAGS) CLEANFILES = diff --git a/xlators/cluster/map/src/map-helper.c b/xlators/cluster/map/src/map-helper.c index 365eeb490..851397b68 100644 --- a/xlators/cluster/map/src/map-helper.c +++ b/xlators/cluster/map/src/map-helper.c @@ -1,22 +1,12 @@ /* - Copyright (c) 2009-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. -*/ + Copyright (c) 2009-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ #ifndef _CONFIG_H #define _CONFIG_H #include "config.h" @@ -256,14 +246,15 @@ verify_dir_and_assign_subvol (xlator_t *this, goto out; } - tmp_map = CALLOC (1, sizeof (struct map_pattern)); + tmp_map = GF_CALLOC (1, sizeof (struct map_pattern), + gf_map_mt_map_pattern); tmp_map->xl = trav->xlator; tmp_map->dir_len = strlen (directory); /* make sure that the top level directory starts * with '/' and ends without '/' */ - tmp_map->directory = strdup (directory); + tmp_map->directory = gf_strdup (directory); if (directory[tmp_map->dir_len - 1] == '/') { tmp_map->dir_len--; } diff --git a/xlators/cluster/map/src/map-mem-types.h b/xlators/cluster/map/src/map-mem-types.h new file mode 100644 index 000000000..3e89f4736 --- /dev/null +++ b/xlators/cluster/map/src/map-mem-types.h @@ -0,0 +1,24 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#ifndef __MAP_MEM_TYPES_H__ +#define __MAP_MEM_TYPES_H__ + +#include "mem-types.h" + +enum gf_map_mem_types_ { + gf_map_mt_map_private_t = gf_common_mt_end + 1, + gf_map_mt_map_local_t, + gf_map_mt_map_xlator_array, + gf_map_mt_map_pattern, + gf_map_mt_end +}; +#endif + diff --git a/xlators/cluster/map/src/map.c b/xlators/cluster/map/src/map.c index 98d6b33b0..6150a33ce 100644 --- a/xlators/cluster/map/src/map.c +++ b/xlators/cluster/map/src/map.c @@ -1,22 +1,12 @@ /* - Copyright (c) 2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. -*/ + Copyright (c) 2010-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ #ifndef _CONFIG_H #define _CONFIG_H #include "config.h" @@ -36,87 +26,53 @@ map_stat_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) + struct iatt *buf) { call_frame_t *prev = NULL; prev = cookie; - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); + map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino); STACK_UNWIND (frame, op_ret, op_errno, buf); return 0; } - static int32_t -map_chmod_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) +map_setattr_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + struct iatt *statpre, + struct iatt *statpost) { call_frame_t *prev = NULL; prev = cookie; - - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); - - STACK_UNWIND (frame, op_ret, op_errno, buf); - return 0; -} + map_itransform (this, prev->this, statpre->ia_ino, &statpre->ia_ino); + map_itransform (this, prev->this, statpost->ia_ino, &statpost->ia_ino); -static int32_t -map_fchmod_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) -{ - call_frame_t *prev = NULL; - prev = cookie; - - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); - - STACK_UNWIND (frame, op_ret, op_errno, buf); + STACK_UNWIND (frame, op_ret, op_errno, statpre, statpost); return 0; } - static int32_t -map_chown_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) +map_fsetattr_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + struct iatt *statpre, + struct iatt *statpost) { call_frame_t *prev = NULL; prev = cookie; - - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); - - STACK_UNWIND (frame, op_ret, op_errno, buf); - return 0; -} + map_itransform (this, prev->this, statpre->ia_ino, &statpre->ia_ino); + map_itransform (this, prev->this, statpost->ia_ino, &statpost->ia_ino); -static int32_t -map_fchown_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) -{ - call_frame_t *prev = NULL; - prev = cookie; - - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); - - STACK_UNWIND (frame, op_ret, op_errno, buf); + STACK_UNWIND (frame, op_ret, op_errno, statpre, statpost); return 0; } @@ -126,14 +82,15 @@ map_truncate_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) + struct iatt *prebuf, + struct iatt *postbuf) { call_frame_t *prev = NULL; prev = cookie; - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); + map_itransform (this, prev->this, postbuf->ia_ino, &postbuf->ia_ino); - STACK_UNWIND (frame, op_ret, op_errno, buf); + STACK_UNWIND (frame, op_ret, op_errno, prebuf, postbuf); return 0; } @@ -143,31 +100,15 @@ map_ftruncate_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) -{ - call_frame_t *prev = NULL; - prev = cookie; - - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); - - STACK_UNWIND (frame, op_ret, op_errno, buf); - return 0; -} - -int32_t -map_utimens_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) + struct iatt *prebuf, + struct iatt *postbuf) { call_frame_t *prev = NULL; prev = cookie; - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); + map_itransform (this, prev->this, postbuf->ia_ino, &postbuf->ia_ino); - STACK_UNWIND (frame, op_ret, op_errno, buf); + STACK_UNWIND (frame, op_ret, op_errno, prebuf, postbuf); return 0; } @@ -189,9 +130,10 @@ map_readlink_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - const char *path) + const char *path, + struct iatt *sbuf) { - STACK_UNWIND (frame, op_ret, op_errno, path); + STACK_UNWIND (frame, op_ret, op_errno, path, sbuf); return 0; } @@ -200,9 +142,11 @@ map_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, - int32_t op_errno) + int32_t op_errno, + struct iatt *preparent, + struct iatt *postparent) { - STACK_UNWIND (frame, op_ret, op_errno); + STACK_UNWIND (frame, op_ret, op_errno, preparent, postparent); return 0; } @@ -211,9 +155,11 @@ map_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, - int32_t op_errno) + int32_t op_errno, + struct iatt *preparent, + struct iatt *postparent) { - STACK_UNWIND (frame, op_ret, op_errno); + STACK_UNWIND (frame, op_ret, op_errno, preparent, postparent); return 0; } @@ -224,12 +170,16 @@ map_rename_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) + struct iatt *buf, + struct iatt *preoldparent, + struct iatt *postoldparent, + struct iatt *prenewparent, + struct iatt *postnewparent) { call_frame_t *prev = NULL; prev = cookie; - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); + map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino); STACK_UNWIND (frame, op_ret, op_errno, buf); return 0; @@ -242,12 +192,14 @@ map_link_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf) + struct iatt *buf, + struct iatt *preparent, + struct iatt *postparent) { call_frame_t *prev = NULL; prev = cookie; - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); + map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino); STACK_UNWIND (frame, op_ret, op_errno, inode, buf); return 0; @@ -273,13 +225,13 @@ map_readv_cbk (call_frame_t *frame, int32_t op_errno, struct iovec *vector, int32_t count, - struct stat *stbuf, + struct iatt *stbuf, struct iobref *iobref) { call_frame_t *prev = NULL; prev = cookie; - map_itransform (this, prev->this, stbuf->st_ino, &stbuf->st_ino); + map_itransform (this, prev->this, stbuf->ia_ino, &stbuf->ia_ino); STACK_UNWIND (frame, op_ret, op_errno, vector, count, stbuf, iobref); return 0; @@ -291,14 +243,15 @@ map_writev_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *stbuf) + struct iatt *prebuf, + struct iatt *postbuf) { call_frame_t *prev = NULL; prev = cookie; - map_itransform (this, prev->this, stbuf->st_ino, &stbuf->st_ino); + map_itransform (this, prev->this, postbuf->ia_ino, &postbuf->ia_ino); - STACK_UNWIND (frame, op_ret, op_errno, stbuf); + STACK_UNWIND (frame, op_ret, op_errno, prebuf, postbuf); return 0; } @@ -319,9 +272,11 @@ map_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, - int32_t op_errno) + int32_t op_errno, + struct iatt *prebuf, + struct iatt *postbuf) { - STACK_UNWIND (frame, op_ret, op_errno); + STACK_UNWIND (frame, op_ret, op_errno, prebuf, postbuf); return 0; } @@ -332,12 +287,12 @@ map_fstat_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct stat *buf) + struct iatt *buf) { call_frame_t *prev = NULL; prev = cookie; - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); + map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino); STACK_UNWIND (frame, op_ret, op_errno, buf); return 0; @@ -473,7 +428,7 @@ map_lk_cbk (call_frame_t *frame, xlator_t *this, int32_t op_ret, int32_t op_errno, - struct flock *lock) + struct gf_flock *lock) { STACK_UNWIND (frame, op_ret, op_errno, lock); return 0; @@ -527,12 +482,14 @@ map_newentry_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf) + struct iatt *buf, + struct iatt *preparent, + struct iatt *postparent) { call_frame_t *prev = NULL; prev = cookie; - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); + map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino); STACK_UNWIND (frame, op_ret, op_errno, inode, buf); return 0; @@ -548,12 +505,14 @@ map_create_cbk (call_frame_t *frame, int32_t op_errno, fd_t *fd, inode_t *inode, - struct stat *buf) + struct iatt *buf, + struct iatt *preparent, + struct iatt *postparent) { call_frame_t *prev = NULL; prev = cookie; - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); + map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino); STACK_UNWIND (frame, op_ret, op_errno, fd, inode, buf); return 0; @@ -655,13 +614,14 @@ map_single_lookup_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf, - dict_t *dict) + struct iatt *buf, + dict_t *dict, + struct iatt *postparent) { call_frame_t *prev = NULL; prev = cookie; - map_itransform (this, prev->this, buf->st_ino, &buf->st_ino); + map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino); STACK_UNWIND (frame, op_ret, op_errno, inode, buf, dict); @@ -675,8 +635,9 @@ map_root_lookup_cbk (call_frame_t *frame, int32_t op_ret, int32_t op_errno, inode_t *inode, - struct stat *buf, - dict_t *dict) + struct iatt *buf, + dict_t *dict, + struct iatt *postparent) { int callcnt = 0; map_local_t *local = NULL; @@ -779,9 +740,36 @@ map_single_readdir_cbk (call_frame_t *frame, } +int32_t +map_single_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, gf_dirent_t *entries) +{ + call_frame_t *prev = NULL; + gf_dirent_t *orig_entry = NULL; + + prev = cookie; + + list_for_each_entry (orig_entry, &entries->list, list) { + map_itransform (this, prev->this, orig_entry->d_ino, + &orig_entry->d_ino); + orig_entry->d_stat.ia_ino = orig_entry->d_ino; + } + STACK_UNWIND (frame, op_ret, op_errno, entries); + return 0; +} + int map_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, gf_dirent_t *orig_entries) + int op_ret, int op_errno, gf_dirent_t *orig_entries); + +int +map_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, gf_dirent_t *orig_entries); + +int +map_generic_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, gf_dirent_t *orig_entries, + int whichop) { map_local_t *local = NULL; gf_dirent_t entries; @@ -816,6 +804,8 @@ map_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, map_itransform (this, subvol, orig_entry->d_off, &entry->d_off); + if (whichop == GF_FOP_READDIRP) + entry->d_stat.ia_ino = entry->d_ino; entry->d_type = orig_entry->d_type; entry->d_len = orig_entry->d_len; @@ -841,9 +831,14 @@ done: goto unwind; } - STACK_WIND (frame, map_readdir_cbk, - next_subvol, next_subvol->fops->readdir, - local->fd, local->size, 0); + if (whichop == GF_FOP_READDIR) + STACK_WIND (frame, map_readdir_cbk, next_subvol, + next_subvol->fops->readdir, local->fd, + local->size, 0); + else + STACK_WIND (frame, map_readdirp_cbk, next_subvol, + next_subvol->fops->readdirp, local->fd, + local->size, 0); return 0; } @@ -864,6 +859,26 @@ unwind: } +int +map_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, gf_dirent_t *orig_entries) +{ + map_generic_readdir_cbk (frame, cookie, this, op_ret, op_errno, + orig_entries, GF_FOP_READDIR); + return 0; +} + + +int +map_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, gf_dirent_t *orig_entries) +{ + map_generic_readdir_cbk (frame, cookie, this, op_ret, op_errno, + orig_entries, GF_FOP_READDIRP); + return 0; +} + + /* Management operations */ static int32_t @@ -880,23 +895,6 @@ map_checksum_cbk (call_frame_t *frame, } -int32_t -map_lock_notify_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -} - - -int32_t -map_lock_fnotify_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -} - /* Fops starts here */ int32_t @@ -928,21 +926,22 @@ map_stat (call_frame_t *frame, return 0; } - int32_t -map_chmod (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode) +map_setattr (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + struct iatt *stbuf, + int32_t valid) { int32_t op_errno = 1; xlator_t *subvol = NULL; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); + GF_VALIDATE_OR_GOTO ("map", this, err); + GF_VALIDATE_OR_GOTO (this->name, frame, err); + GF_VALIDATE_OR_GOTO (this->name, loc, err); + GF_VALIDATE_OR_GOTO (this->name, loc->inode, err); + GF_VALIDATE_OR_GOTO (this->name, loc->path, err); + GF_VALIDATE_OR_GOTO (this->name, stbuf, err); subvol = get_mapping_subvol_from_ctx (this, loc->inode); if (!subvol) { @@ -950,8 +949,8 @@ map_chmod (call_frame_t *frame, goto err; } - STACK_WIND (frame, map_chmod_cbk, subvol, - subvol->fops->chmod, loc, mode); + STACK_WIND (frame, map_setattr_cbk, subvol, + subvol->fops->setattr, loc, stbuf, valid); return 0; err: STACK_UNWIND (frame, -1, op_errno, NULL, NULL); @@ -960,18 +959,19 @@ map_chmod (call_frame_t *frame, } int32_t -map_fchmod (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - mode_t mode) +map_fsetattr (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + struct iatt *stbuf, + int32_t valid) { int32_t op_errno = 1; xlator_t *subvol = NULL; - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); - VALIDATE_OR_GOTO (fd->inode, err); + GF_VALIDATE_OR_GOTO ("map", this, err); + GF_VALIDATE_OR_GOTO (this->name, frame, err); + GF_VALIDATE_OR_GOTO (this->name, fd, err); + GF_VALIDATE_OR_GOTO (this->name, stbuf, err); subvol = get_mapping_subvol_from_ctx (this, fd->inode); if (!subvol) { @@ -979,71 +979,8 @@ map_fchmod (call_frame_t *frame, goto err; } - STACK_WIND (frame, map_fchmod_cbk, subvol, - subvol->fops->fchmod, fd, mode); - - return 0; - err: - STACK_UNWIND (frame, -1, op_errno, NULL, NULL); - - return 0; -} - -int32_t -map_chown (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - uid_t uid, - gid_t gid) -{ - int32_t op_errno = 1; - xlator_t *subvol = NULL; - - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); - - subvol = get_mapping_subvol_from_ctx (this, loc->inode); - if (!subvol) { - op_errno = EINVAL; - goto err; - } - - STACK_WIND (frame, map_chown_cbk, subvol, - subvol->fops->chown, loc, uid, gid); - return 0; - err: - STACK_UNWIND (frame, -1, op_errno, NULL, NULL); - - return 0; -} - -int32_t -map_fchown (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - uid_t uid, - gid_t gid) -{ - int32_t op_errno = 1; - xlator_t *subvol = NULL; - - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (fd, err); - VALIDATE_OR_GOTO (fd->inode, err); - - subvol = get_mapping_subvol_from_ctx (this, fd->inode); - if (!subvol) { - op_errno = EINVAL; - goto err; - } - - STACK_WIND (frame, map_fchown_cbk, subvol, - subvol->fops->fchown, fd, uid, gid); - + STACK_WIND (frame, map_fsetattr_cbk, subvol, + subvol->fops->fsetattr, fd, stbuf, valid); return 0; err: STACK_UNWIND (frame, -1, op_errno, NULL, NULL); @@ -1113,37 +1050,6 @@ map_ftruncate (call_frame_t *frame, } int32_t -map_utimens (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - struct timespec tv[2]) -{ - int32_t op_errno = 1; - xlator_t *subvol = NULL; - - VALIDATE_OR_GOTO (frame, err); - VALIDATE_OR_GOTO (this, err); - VALIDATE_OR_GOTO (loc, err); - VALIDATE_OR_GOTO (loc->inode, err); - VALIDATE_OR_GOTO (loc->path, err); - - subvol = get_mapping_subvol_from_ctx (this, loc->inode); - if (!subvol) { - op_errno = EINVAL; - goto err; - } - - STACK_WIND (frame, map_utimens_cbk, subvol, - subvol->fops->utimens, loc, tv); - - return 0; - err: - STACK_UNWIND (frame, -1, op_errno, NULL, NULL); - - return 0; -} - -int32_t map_access (call_frame_t *frame, xlator_t *this, loc_t *loc, @@ -1353,7 +1259,7 @@ int32_t map_open (call_frame_t *frame, xlator_t *this, loc_t *loc, - int32_t flags, fd_t *fd) + int32_t flags, fd_t *fd, int wbflags) { int32_t op_errno = 1; xlator_t *subvol = NULL; @@ -1371,7 +1277,7 @@ map_open (call_frame_t *frame, } STACK_WIND (frame, map_open_cbk, subvol, - subvol->fops->open, loc, flags, fd); + subvol->fops->open, loc, flags, fd, wbflags); return 0; err: @@ -1854,7 +1760,7 @@ map_lk (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t cmd, - struct flock *lock) + struct gf_flock *lock) { int32_t op_errno = 1; xlator_t *subvol = NULL; @@ -1883,7 +1789,7 @@ map_lk (call_frame_t *frame, int32_t map_inodelk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, int32_t cmd, struct flock *lock) + const char *volume, loc_t *loc, int32_t cmd, struct gf_flock *lock) { int32_t op_errno = 1; xlator_t *subvol = NULL; @@ -1913,7 +1819,7 @@ map_inodelk (call_frame_t *frame, xlator_t *this, int32_t map_finodelk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, int32_t cmd, struct flock *lock) + const char *volume, fd_t *fd, int32_t cmd, struct gf_flock *lock) { int32_t op_errno = 1; xlator_t *subvol = NULL; @@ -2231,7 +2137,8 @@ map_lookup (call_frame_t *frame, return 0; root_inode: - local = CALLOC (1, sizeof (map_local_t)); + local = GF_CALLOC (1, sizeof (map_local_t), + gf_map_mt_map_local_t); frame->local = local; local->call_count = priv->child_count; @@ -2283,7 +2190,8 @@ map_statfs (call_frame_t *frame, return 0; root_inode: - local = CALLOC (1, sizeof (map_local_t)); + local = GF_CALLOC (1, sizeof (map_local_t), + gf_map_mt_map_local_t); priv = this->private; frame->local = local; @@ -2335,7 +2243,8 @@ map_opendir (call_frame_t *frame, return 0; root_inode: - local = CALLOC (1, sizeof (map_local_t)); + local = GF_CALLOC (1, sizeof (map_local_t), + gf_map_mt_map_local_t); priv = this->private; frame->local = local; @@ -2359,11 +2268,8 @@ map_opendir (call_frame_t *frame, int32_t -map_readdir (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t yoff) +map_do_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t yoff, int whichop) { int32_t op_errno = EINVAL; xlator_t *subvol = NULL; @@ -2386,14 +2292,19 @@ map_readdir (call_frame_t *frame, } /* Just one callback */ - STACK_WIND (frame, map_single_readdir_cbk, subvol, - subvol->fops->readdir, fd, size, yoff); + if (whichop == GF_FOP_READDIR) + STACK_WIND (frame, map_single_readdir_cbk, subvol, + subvol->fops->readdir, fd, size, yoff); + else + STACK_WIND (frame, map_single_readdirp_cbk, subvol, + subvol->fops->readdirp, fd, size, yoff); return 0; root_inode: /* readdir on '/' */ - local = CALLOC (1, sizeof (map_local_t)); + local = GF_CALLOC (1, sizeof (map_local_t), + gf_map_mt_map_local_t); if (!local) { gf_log (this->name, GF_LOG_ERROR, "memory allocation failed :("); @@ -2411,8 +2322,12 @@ map_readdir (call_frame_t *frame, map_deitransform (this, yoff, &xvol, (uint64_t *)&xoff); - STACK_WIND (frame, map_readdir_cbk, xvol, - xvol->fops->readdir, fd, size, xoff); + if (whichop == GF_FOP_READDIR) + STACK_WIND (frame, map_readdir_cbk, xvol, xvol->fops->readdir, + fd, size, xoff); + else + STACK_WIND (frame, map_readdirp_cbk, xvol, xvol->fops->readdirp, + fd, size, xoff); return 0; err: @@ -2422,6 +2337,24 @@ map_readdir (call_frame_t *frame, } + +int32_t +map_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t yoff) +{ + map_do_readdir (frame, this, fd, size, yoff, GF_FOP_READDIR); + return 0; +} + +int32_t +map_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t yoff) +{ + map_do_readdir (frame, this, fd, size, yoff, GF_FOP_READDIRP); + return 0; +} + + void fini (xlator_t *this) { @@ -2432,22 +2365,40 @@ fini (xlator_t *this) priv = this->private; if (priv) { - if (priv->xlarray) - FREE (priv->xlarray); + GF_FREE (priv->xlarray); trav_map = priv->map; while (trav_map) { tmp_map = trav_map; trav_map = trav_map->next; - FREE (tmp_map); + GF_FREE (tmp_map); } - FREE(priv); + GF_FREE(priv); } return; } +int32_t +mem_acct_init (xlator_t *this) +{ + int ret = -1; + + if (!this) + return ret; + + ret = xlator_mem_acct_init (this, gf_map_mt_end + 1); + + if (ret != 0) { + gf_log (this->name, GF_LOG_ERROR, "Memory accounting init" + "failed"); + return ret; + } + + return ret; +} + int init (xlator_t *this) { @@ -2464,6 +2415,7 @@ init (xlator_t *this) char *subvol_str = NULL; char *map_xl = NULL; + if (!this->children) { gf_log (this->name,GF_LOG_ERROR, "FATAL: map should have one or more child defined"); @@ -2475,7 +2427,8 @@ init (xlator_t *this) "dangling volume. check volfile "); } - priv = CALLOC (1, sizeof (map_private_t)); + priv = GF_CALLOC (1, sizeof (map_private_t), + gf_map_mt_map_private_t); this->private = priv; /* allocate xlator array */ @@ -2484,7 +2437,8 @@ init (xlator_t *this) count++; trav = trav->next; } - priv->xlarray = CALLOC (1, sizeof (struct map_xlator_array) * count); + priv->xlarray = GF_CALLOC (1, sizeof (struct map_xlator_array) * count, + gf_map_mt_map_xlator_array); priv->child_count = count; /* build xlator array */ @@ -2504,7 +2458,7 @@ init (xlator_t *this) } map_pair_str = strtok_r (pattern_string, ";", &tmp_str); while (map_pair_str) { - dup_map_pair = strdup (map_pair_str); + dup_map_pair = gf_strdup (map_pair_str); dir_str = strtok_r (dup_map_pair, ":", &tmp_str1); if (!dir_str) { gf_log (this->name, GF_LOG_ERROR, @@ -2526,7 +2480,7 @@ init (xlator_t *this) goto err; } - FREE (dup_map_pair); + GF_FREE (dup_map_pair); map_pair_str = strtok_r (NULL, ";", &tmp_str); } @@ -2557,12 +2511,7 @@ struct xlator_fops fops = { .create = map_create, .stat = map_stat, - .chmod = map_chmod, - .chown = map_chown, - .fchown = map_fchown, - .fchmod = map_fchmod, .fstat = map_fstat, - .utimens = map_utimens, .truncate = map_truncate, .ftruncate = map_ftruncate, .access = map_access, @@ -2581,6 +2530,7 @@ struct xlator_fops fops = { .lk = map_lk, .opendir = map_opendir, .readdir = map_readdir, + .readdirp = map_readdirp, .fsyncdir = map_fsyncdir, .symlink = map_symlink, .unlink = map_unlink, @@ -2597,9 +2547,8 @@ struct xlator_fops fops = { .setdents = map_setdents, .getdents = map_getdents, .checksum = map_checksum, -}; - -struct xlator_mops mops = { + .setattr = map_setattr, + .fsetattr = map_fsetattr, }; struct xlator_cbks cbks = { diff --git a/xlators/cluster/map/src/map.h b/xlators/cluster/map/src/map.h index 72b4f5640..7703a543e 100644 --- a/xlators/cluster/map/src/map.h +++ b/xlators/cluster/map/src/map.h @@ -1,26 +1,17 @@ /* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ - #ifndef __MAP_H__ #define __MAP_H__ #include "xlator.h" +#include "map-mem-types.h" struct map_pattern { struct map_pattern *next; @@ -46,7 +37,7 @@ typedef struct { int32_t op_errno; int call_count; struct statvfs statvfs; - struct stat stbuf; + struct iatt stbuf; inode_t *inode; dict_t *dict; fd_t *fd; diff --git a/xlators/cluster/stripe/src/Makefile.am b/xlators/cluster/stripe/src/Makefile.am index 60e0a1568..2d151422a 100644 --- a/xlators/cluster/stripe/src/Makefile.am +++ b/xlators/cluster/stripe/src/Makefile.am @@ -2,13 +2,19 @@ xlator_LTLIBRARIES = stripe.la xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/cluster -stripe_la_LDFLAGS = -module -avoidversion +stripe_la_LDFLAGS = -module -avoid-version + +stripe_la_SOURCES = stripe.c stripe-helpers.c \ + $(top_builddir)/xlators/lib/src/libxlator.c -stripe_la_SOURCES = stripe.c stripe_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la -AM_CFLAGS = -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -Wall -D$(GF_HOST_OS)\ - -I$(top_srcdir)/libglusterfs/src -shared -nostartfiles $(GF_CFLAGS) +noinst_HEADERS = stripe.h stripe-mem-types.h $(top_builddir)/xlators/lib/src/libxlator.h + +AM_CPPFLAGS = $(GF_CPPFLAGS) -I$(top_srcdir)/libglusterfs/src \ + -I$(top_srcdir)/xlators/lib/src + +AM_CFLAGS = -Wall $(GF_CFLAGS) CLEANFILES = diff --git a/xlators/cluster/stripe/src/stripe-helpers.c b/xlators/cluster/stripe/src/stripe-helpers.c new file mode 100644 index 000000000..a83abdc72 --- /dev/null +++ b/xlators/cluster/stripe/src/stripe-helpers.c @@ -0,0 +1,675 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#include <fnmatch.h> + +#include "stripe.h" +#include "byte-order.h" +#include "mem-types.h" + +void +stripe_local_wipe (stripe_local_t *local) +{ + if (!local) + goto out; + + loc_wipe (&local->loc); + loc_wipe (&local->loc2); + + if (local->fd) + fd_unref (local->fd); + + if (local->inode) + inode_unref (local->inode); + + if (local->xattr) + dict_unref (local->xattr); + + if (local->xdata) + dict_unref (local->xdata); + +out: + return; +} + + + +int +stripe_aggregate (dict_t *this, char *key, data_t *value, void *data) +{ + dict_t *dst = NULL; + int64_t *ptr = 0, *size = NULL; + int32_t ret = -1; + + dst = data; + + if (strcmp (key, GF_XATTR_QUOTA_SIZE_KEY) == 0) { + ret = dict_get_bin (dst, key, (void **)&size); + if (ret < 0) { + size = GF_CALLOC (1, sizeof (int64_t), + gf_common_mt_char); + if (size == NULL) { + gf_log ("stripe", GF_LOG_WARNING, + "memory allocation failed"); + goto out; + } + ret = dict_set_bin (dst, key, size, sizeof (int64_t)); + if (ret < 0) { + gf_log ("stripe", GF_LOG_WARNING, + "stripe aggregate dict set failed"); + GF_FREE (size); + goto out; + } + } + + ptr = data_to_bin (value); + if (ptr == NULL) { + gf_log ("stripe", GF_LOG_WARNING, "data to bin failed"); + goto out; + } + + *size = hton64 (ntoh64 (*size) + ntoh64 (*ptr)); + } else if (strcmp (key, GF_CONTENT_KEY)) { + /* No need to aggregate 'CONTENT' data */ + ret = dict_set (dst, key, value); + if (ret) + gf_log ("stripe", GF_LOG_WARNING, "xattr dict set failed"); + } + +out: + return 0; +} + + +void +stripe_aggregate_xattr (dict_t *dst, dict_t *src) +{ + if ((dst == NULL) || (src == NULL)) { + goto out; + } + + dict_foreach (src, stripe_aggregate, dst); +out: + return; +} + + +int32_t +stripe_xattr_aggregate (char *buffer, stripe_local_t *local, int32_t *total) +{ + int32_t i = 0; + int32_t ret = -1; + int32_t len = 0; + char *sbuf = NULL; + stripe_xattr_sort_t *xattr = NULL; + + if (!buffer || !local || !local->xattr_list) + goto out; + + sbuf = buffer; + + for (i = 0; i < local->nallocs; i++) { + xattr = local->xattr_list + i; + len = xattr->xattr_len; + + if (len && xattr && xattr->xattr_value) { + memcpy (buffer, xattr->xattr_value, len); + buffer += len; + *buffer++ = ' '; + } + } + + *--buffer = '\0'; + if (total) + *total = buffer - sbuf; + ret = 0; + + out: + return ret; +} + +int32_t +stripe_free_xattr_str (stripe_local_t *local) +{ + int32_t i = 0; + int32_t ret = -1; + stripe_xattr_sort_t *xattr = NULL; + + if (!local || !local->xattr_list) + goto out; + + for (i = 0; i < local->nallocs; i++) { + xattr = local->xattr_list + i; + + if (xattr && xattr->xattr_value) + GF_FREE (xattr->xattr_value); + } + + ret = 0; + out: + return ret; +} + + +int32_t +stripe_fill_lockinfo_xattr (xlator_t *this, stripe_local_t *local, + void **xattr_serz) +{ + int32_t ret = -1, i = 0, len = 0; + dict_t *tmp1 = NULL, *tmp2 = NULL; + char *buf = NULL; + stripe_xattr_sort_t *xattr = NULL; + + if (xattr_serz == NULL) { + goto out; + } + + tmp2 = dict_new (); + + if (tmp2 == NULL) { + goto out; + } + + for (i = 0; i < local->nallocs; i++) { + xattr = local->xattr_list + i; + len = xattr->xattr_len; + + if (len && xattr && xattr->xattr_value) { + ret = dict_reset (tmp2); + if (ret < 0) { + gf_log (this->name, GF_LOG_DEBUG, + "dict_reset failed (%s)", + strerror (-ret)); + } + + ret = dict_unserialize (xattr->xattr_value, + xattr->xattr_len, + &tmp2); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "dict_unserialize failed (%s)", + strerror (-ret)); + ret = -1; + goto out; + } + + tmp1 = dict_copy (tmp2, tmp1); + if (tmp1 == NULL) { + gf_log (this->name, GF_LOG_WARNING, + "dict_copy failed (%s)", + strerror (-ret)); + ret = -1; + goto out; + } + } + } + + len = dict_serialized_length (tmp1); + if (len > 0) { + buf = GF_CALLOC (1, len, gf_common_mt_dict_t); + if (buf == NULL) { + ret = -1; + goto out; + } + + ret = dict_serialize (tmp1, buf); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "dict_serialize failed (%s)", strerror (-ret)); + ret = -1; + goto out; + } + + *xattr_serz = buf; + } + + ret = 0; +out: + if (tmp1 != NULL) { + dict_unref (tmp1); + } + + if (tmp2 != NULL) { + dict_unref (tmp2); + } + + return ret; +} + + +int32_t +stripe_fill_pathinfo_xattr (xlator_t *this, stripe_local_t *local, + char **xattr_serz) +{ + int ret = -1; + int32_t padding = 0; + int32_t tlen = 0; + char stripe_size_str[20] = {0,}; + char *pathinfo_serz = NULL; + + if (!local) { + gf_log (this->name, GF_LOG_ERROR, "Possible NULL deref"); + goto out; + } + + (void) snprintf (stripe_size_str, 20, "%ld", + (local->fctx) ? local->fctx->stripe_size : 0); + + /* extra bytes for decorations (brackets and <>'s) */ + padding = strlen (this->name) + strlen (STRIPE_PATHINFO_HEADER) + + strlen (stripe_size_str) + 7; + local->xattr_total_len += (padding + 2); + + pathinfo_serz = GF_CALLOC (local->xattr_total_len, sizeof (char), + gf_common_mt_char); + if (!pathinfo_serz) + goto out; + + /* xlator info */ + (void) sprintf (pathinfo_serz, "(<"STRIPE_PATHINFO_HEADER"%s:[%s]> ", + this->name, stripe_size_str); + + ret = stripe_xattr_aggregate (pathinfo_serz + padding, local, &tlen); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Cannot aggregate pathinfo list"); + goto out; + } + + *(pathinfo_serz + padding + tlen) = ')'; + *(pathinfo_serz + padding + tlen + 1) = '\0'; + + *xattr_serz = pathinfo_serz; + + ret = 0; + out: + return ret; +} + +/** + * stripe_get_matching_bs - Get the matching block size for the given path. + */ +int32_t +stripe_get_matching_bs (const char *path, stripe_private_t *priv) +{ + struct stripe_options *trav = NULL; + uint64_t block_size = 0; + + GF_VALIDATE_OR_GOTO ("stripe", priv, out); + GF_VALIDATE_OR_GOTO ("stripe", path, out); + + LOCK (&priv->lock); + { + block_size = priv->block_size; + trav = priv->pattern; + while (trav) { + if (!fnmatch (trav->path_pattern, path, FNM_NOESCAPE)) { + block_size = trav->block_size; + break; + } + trav = trav->next; + } + } + UNLOCK (&priv->lock); + +out: + return block_size; +} + +int32_t +stripe_ctx_handle (xlator_t *this, call_frame_t *prev, stripe_local_t *local, + dict_t *dict) +{ + char key[256] = {0,}; + data_t *data = NULL; + int32_t index = 0; + stripe_private_t *priv = NULL; + + priv = this->private; + + + if (!local->fctx) { + local->fctx = GF_CALLOC (1, sizeof (stripe_fd_ctx_t), + gf_stripe_mt_stripe_fd_ctx_t); + if (!local->fctx) { + local->op_errno = ENOMEM; + local->op_ret = -1; + goto out; + } + + local->fctx->static_array = 0; + } + /* Stripe block size */ + sprintf (key, "trusted.%s.stripe-size", this->name); + data = dict_get (dict, key); + if (!data) { + local->xattr_self_heal_needed = 1; + gf_log (this->name, GF_LOG_ERROR, + "Failed to get stripe-size"); + goto out; + } else { + if (!local->fctx->stripe_size) { + local->fctx->stripe_size = + data_to_int64 (data); + } + + if (local->fctx->stripe_size != data_to_int64 (data)) { + gf_log (this->name, GF_LOG_WARNING, + "stripe-size mismatch in blocks"); + local->xattr_self_heal_needed = 1; + } + } + + /* Stripe count */ + sprintf (key, "trusted.%s.stripe-count", this->name); + data = dict_get (dict, key); + + if (!data) { + local->xattr_self_heal_needed = 1; + gf_log (this->name, GF_LOG_ERROR, + "Failed to get stripe-count"); + goto out; + } + if (!local->fctx->xl_array) { + local->fctx->stripe_count = data_to_int32 (data); + if (!local->fctx->stripe_count) { + gf_log (this->name, GF_LOG_ERROR, + "error with stripe-count xattr"); + local->op_ret = -1; + local->op_errno = EIO; + goto out; + } + + local->fctx->xl_array = GF_CALLOC (local->fctx->stripe_count, + sizeof (xlator_t *), + gf_stripe_mt_xlator_t); + + if (!local->fctx->xl_array) { + local->op_errno = ENOMEM; + local->op_ret = -1; + goto out; + } + } + if (local->fctx->stripe_count != data_to_int32 (data)) { + gf_log (this->name, GF_LOG_ERROR, + "error with stripe-count xattr (%d != %d)", + local->fctx->stripe_count, data_to_int32 (data)); + local->op_ret = -1; + local->op_errno = EIO; + goto out; + } + + /* index */ + sprintf (key, "trusted.%s.stripe-index", this->name); + data = dict_get (dict, key); + if (!data) { + local->xattr_self_heal_needed = 1; + gf_log (this->name, GF_LOG_ERROR, + "Failed to get stripe-index"); + goto out; + } + index = data_to_int32 (data); + if (index > priv->child_count) { + gf_log (this->name, GF_LOG_ERROR, + "error with stripe-index xattr (%d)", index); + local->op_ret = -1; + local->op_errno = EIO; + goto out; + } + if (local->fctx->xl_array) { + if (!local->fctx->xl_array[index]) + local->fctx->xl_array[index] = prev->this; + } + + sprintf(key, "trusted.%s.stripe-coalesce", this->name); + data = dict_get(dict, key); + if (!data) { + /* + * The file was probably created prior to coalesce support. + * Assume non-coalesce mode for this file to maintain backwards + * compatibility. + */ + gf_log(this->name, GF_LOG_DEBUG, "missing stripe-coalesce " + "attr, assume non-coalesce mode"); + local->fctx->stripe_coalesce = 0; + } else { + local->fctx->stripe_coalesce = data_to_int32(data); + } + + +out: + return 0; +} + +int32_t +stripe_xattr_request_build (xlator_t *this, dict_t *dict, uint64_t stripe_size, + uint32_t stripe_count, uint32_t stripe_index, + uint32_t stripe_coalesce) +{ + char key[256] = {0,}; + int32_t ret = -1; + + sprintf (key, "trusted.%s.stripe-size", this->name); + ret = dict_set_int64 (dict, key, stripe_size); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "failed to set %s in xattr_req dict", key); + goto out; + } + + sprintf (key, "trusted.%s.stripe-count", this->name); + ret = dict_set_int32 (dict, key, stripe_count); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "failed to set %s in xattr_req dict", key); + goto out; + } + + sprintf (key, "trusted.%s.stripe-index", this->name); + ret = dict_set_int32 (dict, key, stripe_index); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "failed to set %s in xattr_req dict", key); + goto out; + } + + sprintf(key, "trusted.%s.stripe-coalesce", this->name); + ret = dict_set_int32(dict, key, stripe_coalesce); + if (ret) { + gf_log(this->name, GF_LOG_WARNING, + "failed to set %s in xattr_req_dict", key); + goto out; + } +out: + return ret; +} + + +static int +set_default_block_size (stripe_private_t *priv, char *num) +{ + + int ret = -1; + GF_VALIDATE_OR_GOTO ("stripe", THIS, out); + GF_VALIDATE_OR_GOTO (THIS->name, priv, out); + GF_VALIDATE_OR_GOTO (THIS->name, num, out); + + + if (gf_string2bytesize (num, &priv->block_size) != 0) { + gf_log (THIS->name, GF_LOG_ERROR, + "invalid number format \"%s\"", num); + goto out; + } + + ret = 0; + + out: + return ret; + +} + + +int +set_stripe_block_size (xlator_t *this, stripe_private_t *priv, char *data) +{ + int ret = -1; + char *tmp_str = NULL; + char *tmp_str1 = NULL; + char *dup_str = NULL; + char *stripe_str = NULL; + char *pattern = NULL; + char *num = NULL; + struct stripe_options *temp_stripeopt = NULL; + struct stripe_options *stripe_opt = NULL; + + if (!this || !priv || !data) + goto out; + + /* Get the pattern for striping. + "option block-size *avi:10MB" etc */ + stripe_str = strtok_r (data, ",", &tmp_str); + while (stripe_str) { + dup_str = gf_strdup (stripe_str); + stripe_opt = GF_CALLOC (1, sizeof (struct stripe_options), + gf_stripe_mt_stripe_options); + if (!stripe_opt) { + goto out; + } + + pattern = strtok_r (dup_str, ":", &tmp_str1); + num = strtok_r (NULL, ":", &tmp_str1); + if (!num) { + num = pattern; + pattern = "*"; + ret = set_default_block_size (priv, num); + if (ret) + goto out; + } + if (gf_string2bytesize (num, &stripe_opt->block_size) != 0) { + gf_log (this->name, GF_LOG_ERROR, + "invalid number format \"%s\"", num); + goto out; + } + + if (stripe_opt->block_size < STRIPE_MIN_BLOCK_SIZE) { + gf_log (this->name, GF_LOG_ERROR, "Invalid Block-size: " + "%s. Should be atleast %llu bytes", num, + STRIPE_MIN_BLOCK_SIZE); + goto out; + } + if (stripe_opt->block_size % 512) { + gf_log (this->name, GF_LOG_ERROR, "Block-size: %s should" + " be a multiple of 512 bytes", num); + goto out; + } + + memcpy (stripe_opt->path_pattern, pattern, strlen (pattern)); + + gf_log (this->name, GF_LOG_DEBUG, + "block-size : pattern %s : size %"PRId64, + stripe_opt->path_pattern, stripe_opt->block_size); + + if (priv->pattern) + temp_stripeopt = NULL; + else + temp_stripeopt = priv->pattern; + + stripe_opt->next = temp_stripeopt; + + priv->pattern = stripe_opt; + stripe_opt = NULL; + + GF_FREE (dup_str); + dup_str = NULL; + + stripe_str = strtok_r (NULL, ",", &tmp_str); + } + + ret = 0; +out: + + GF_FREE (dup_str); + + GF_FREE (stripe_opt); + + return ret; +} + +int32_t +stripe_iatt_merge (struct iatt *from, struct iatt *to) +{ + if (to->ia_size < from->ia_size) + to->ia_size = from->ia_size; + if (to->ia_mtime < from->ia_mtime) + to->ia_mtime = from->ia_mtime; + if (to->ia_ctime < from->ia_ctime) + to->ia_ctime = from->ia_ctime; + if (to->ia_atime < from->ia_atime) + to->ia_atime = from->ia_atime; + return 0; +} + +off_t +coalesced_offset(off_t offset, uint64_t stripe_size, int stripe_count) +{ + size_t line_size = 0; + uint64_t stripe_num = 0; + off_t coalesced_offset = 0; + + line_size = stripe_size * stripe_count; + stripe_num = offset / line_size; + + coalesced_offset = (stripe_num * stripe_size) + + (offset % stripe_size); + + return coalesced_offset; +} + +off_t +uncoalesced_size(off_t size, uint64_t stripe_size, int stripe_count, + int stripe_index) +{ + uint64_t nr_full_stripe_chunks = 0, mod = 0; + + if (!size) + return size; + + /* + * Estimate the number of fully written stripes from the + * local file size. Each stripe_size chunk corresponds to + * a stripe. + */ + nr_full_stripe_chunks = (size / stripe_size) * stripe_count; + mod = size % stripe_size; + + if (!mod) { + /* + * There is no remainder, thus we could have overestimated + * the size of the file in terms of chunks. Trim the number + * of chunks by the following stripe members and leave it + * up to those nodes to respond with a larger size (if + * necessary). + */ + nr_full_stripe_chunks -= stripe_count - + (stripe_index + 1); + size = nr_full_stripe_chunks * stripe_size; + } else { + /* + * There is a remainder and thus we own the last chunk of the + * file. Add the preceding stripe members of the final stripe + * along with the remainder to calculate the exact size. + */ + nr_full_stripe_chunks += stripe_index; + size = nr_full_stripe_chunks * stripe_size + mod; + } + + return size; +} + diff --git a/xlators/cluster/stripe/src/stripe-mem-types.h b/xlators/cluster/stripe/src/stripe-mem-types.h new file mode 100644 index 000000000..e9ac9cf46 --- /dev/null +++ b/xlators/cluster/stripe/src/stripe-mem-types.h @@ -0,0 +1,31 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + + +#ifndef __STRIPE_MEM_TYPES_H__ +#define __STRIPE_MEM_TYPES_H__ + +#include "mem-types.h" + +enum gf_stripe_mem_types_ { + gf_stripe_mt_iovec = gf_common_mt_end + 1, + gf_stripe_mt_stripe_replies, + gf_stripe_mt_stripe_fd_ctx_t, + gf_stripe_mt_char, + gf_stripe_mt_int8_t, + gf_stripe_mt_int32_t, + gf_stripe_mt_xlator_t, + gf_stripe_mt_stripe_private_t, + gf_stripe_mt_stripe_options, + gf_stripe_mt_xattr_sort_t, + gf_stripe_mt_end +}; +#endif + diff --git a/xlators/cluster/stripe/src/stripe.c b/xlators/cluster/stripe/src/stripe.c index c1d93b41b..69b510e23 100644 --- a/xlators/cluster/stripe/src/stripe.c +++ b/xlators/cluster/stripe/src/stripe.c @@ -1,3292 +1,5814 @@ /* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> This file is part of GlusterFS. - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ /** * xlators/cluster/stripe: - * Stripe translator, stripes the data accross its child nodes, - * as per the options given in the volfile. The striping works - * fairly simple. It writes files at different offset as per - * calculation. So, 'ls -l' output at the real posix level will - * show file size bigger than the actual size. But when one does + * Stripe translator, stripes the data across its child nodes, + * as per the options given in the volfile. The striping works + * fairly simple. It writes files at different offset as per + * calculation. So, 'ls -l' output at the real posix level will + * show file size bigger than the actual size. But when one does * 'df' or 'du <file>', real size of the file on the server is shown. * * WARNING: * Stripe translator can't regenerate data if a child node gets disconnected. - * So, no 'self-heal' for stripe. Hence the advice, use stripe only when its - * very much necessary, or else, use it in combination with AFR, to have a - * backup copy. + * So, no 'self-heal' for stripe. Hence the advice, use stripe only when its + * very much necessary, or else, use it in combination with AFR, to have a + * backup copy. */ +#include <fnmatch.h> -#ifndef _CONFIG_H -#define _CONFIG_H -#include "config.h" -#endif +#include "stripe.h" +#include "libxlator.h" +#include "byte-order.h" +#include "statedump.h" -#include "xlator.h" -#include "logging.h" -#include "defaults.h" -#include "compat.h" -#include "compat-errno.h" -#include <fnmatch.h> -#include <signal.h> +struct volume_options options[]; -#define STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR(_loc) do { \ - if (!(_loc && _loc->inode)) { \ - STACK_UNWIND (frame, -1, EINVAL, NULL, NULL, NULL); \ - return 0; \ - } \ -} while(0) +int32_t +stripe_sh_chown_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *preop, struct iatt *postop, dict_t *xdata) +{ + int callcnt = -1; + stripe_local_t *local = NULL; + + if (!this || !frame || !frame->local) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + } + UNLOCK (&frame->lock); + + if (!callcnt) { + STRIPE_STACK_DESTROY (frame); + } +out: + return 0; +} -/** - * struct stripe_options : This keeps the pattern and the block-size - * information, which is used for striping on a file. - */ -struct stripe_options { - struct stripe_options *next; - char path_pattern[256]; - uint64_t block_size; -}; +int32_t +stripe_sh_make_entry_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; -/** - * Private structure for stripe translator - */ -struct stripe_private { - struct stripe_options *pattern; - xlator_t **xl_array; - uint64_t block_size; - gf_lock_t lock; - uint8_t nodes_down; - int8_t first_child_down; - int8_t child_count; - int8_t state[256]; /* Current state of the child node, - 0 for down, 1 for up */ - gf_boolean_t xattr_supported; /* 0 for no, 1 for yes, default yes */ -}; + if (!frame || !frame->local || !cookie || !this) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } -/** - * Used to keep info about the replies received from fops->readv calls - */ -struct readv_replies { - struct iovec *vector; - int32_t count; //count of vector - int32_t op_ret; //op_ret of readv - int32_t op_errno; - struct stat stbuf; /* 'stbuf' is also a part of reply */ -}; + prev = cookie; + local = frame->local; -/** - * Local structure to be passed with all the frames in case of STACK_WIND - */ -struct stripe_local; /* this itself is used inside the structure; */ - -struct stripe_local { - struct stripe_local *next; - call_frame_t *orig_frame; - - /* Used by _cbk functions */ - struct stat stbuf; - struct readv_replies *replies; - struct statvfs statvfs_buf; - dir_entry_t *entry; - struct xlator_stats stats; - - int8_t revalidate; - int8_t failed; - int8_t unwind; - - int32_t node_index; - int32_t call_count; - int32_t wind_count; /* used instead of child_cound - in case of read and write */ - int32_t op_ret; - int32_t op_errno; - int32_t count; - int32_t flags; - char *name; - inode_t *inode; - - loc_t loc; - loc_t loc2; - - /* For File I/O fops */ - dict_t *dict; - - /* General usage */ - off_t offset; - off_t stripe_size; - - int8_t *list; - struct flock lock; - fd_t *fd; - void *value; - struct iobref *iobref; -}; + STACK_WIND (frame, stripe_sh_chown_cbk, prev->this, + prev->this->fops->setattr, &local->loc, + &local->stbuf, (GF_SET_ATTR_UID | GF_SET_ATTR_GID), NULL); -typedef struct stripe_local stripe_local_t; -typedef struct stripe_private stripe_private_t; +out: + return 0; +} -/** - * stripe_get_matching_bs - Get the matching block size for the given path. - */ -int32_t -stripe_get_matching_bs (const char *path, - struct stripe_options *opts, - uint64_t default_bs) -{ - struct stripe_options *trav = NULL; - char *pathname = NULL; - uint64_t block_size = 0; - - block_size = default_bs; - pathname = strdup (path); - trav = opts; - - while (trav) { - if (fnmatch (trav->path_pattern, - pathname, FNM_NOESCAPE) == 0) { - block_size = trav->block_size; - break; - } - trav = trav->next; - } - free (pathname); - - return block_size; +int32_t +stripe_entry_self_heal (call_frame_t *frame, xlator_t *this, + stripe_local_t *local) +{ + xlator_list_t *trav = NULL; + call_frame_t *rframe = NULL; + stripe_local_t *rlocal = NULL; + stripe_private_t *priv = NULL; + dict_t *xdata = NULL; + int ret = 0; + + if (!local || !this || !frame) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + if (!(IA_ISREG (local->stbuf.ia_type) || + IA_ISDIR (local->stbuf.ia_type))) + return 0; + + priv = this->private; + trav = this->children; + rframe = copy_frame (frame); + if (!rframe) { + goto out; + } + rlocal = mem_get0 (this->local_pool); + if (!rlocal) { + goto out; + } + rframe->local = rlocal; + rlocal->call_count = priv->child_count; + loc_copy (&rlocal->loc, &local->loc); + memcpy (&rlocal->stbuf, &local->stbuf, sizeof (struct iatt)); + + xdata = dict_new (); + if (!xdata) + goto out; + + ret = dict_set_static_bin (xdata, "gfid-req", local->stbuf.ia_gfid, 16); + if (ret) + gf_log (this->name, GF_LOG_WARNING, + "%s: failed to set gfid-req", local->loc.path); + + while (trav) { + if (IA_ISREG (local->stbuf.ia_type)) { + STACK_WIND (rframe, stripe_sh_make_entry_cbk, + trav->xlator, trav->xlator->fops->mknod, + &local->loc, + st_mode_from_ia (local->stbuf.ia_prot, + local->stbuf.ia_type), + 0, 0, xdata); + } + if (IA_ISDIR (local->stbuf.ia_type)) { + STACK_WIND (rframe, stripe_sh_make_entry_cbk, + trav->xlator, trav->xlator->fops->mkdir, + &local->loc, + st_mode_from_ia (local->stbuf.ia_prot, + local->stbuf.ia_type), + 0, xdata); + } + trav = trav->next; + } + + if (xdata) + dict_unref (xdata); + return 0; + +out: + if (rframe) + STRIPE_STACK_DESTROY (rframe); + if (xdata) + dict_unref (xdata); + + return 0; } -/* - * stripe_common_cbk - - */ int32_t -stripe_common_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) +stripe_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, dict_t *xdata, struct iatt *postparent) { - STACK_UNWIND (frame, op_ret, op_errno); - return 0; + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + int ret = 0; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + if (op_errno != ENOENT) + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, + strerror (op_errno)); + if (local->op_errno != ESTALE) + local->op_errno = op_errno; + if (((op_errno != ENOENT) && (op_errno != ENOTCONN)) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + if (op_errno == ENOENT) + local->entry_self_heal_needed = 1; + } + + if (op_ret >= 0) { + local->op_ret = 0; + if (IA_ISREG (buf->ia_type)) { + ret = stripe_ctx_handle (this, prev, local, + xdata); + if (ret) + gf_log (this->name, GF_LOG_ERROR, + "Error getting fctx info from" + " dict"); + } + + if (FIRST_CHILD(this) == prev->this) { + local->stbuf = *buf; + local->postparent = *postparent; + local->inode = inode_ref (inode); + if (xdata) + local->xdata = dict_ref (xdata); + if (local->xattr) { + stripe_aggregate_xattr (local->xdata, + local->xattr); + dict_unref (local->xattr); + local->xattr = NULL; + } + } + + if (!local->xdata && !local->xattr) { + local->xattr = dict_ref (xdata); + } else if (local->xdata) { + stripe_aggregate_xattr (local->xdata, xdata); + } else if (local->xattr) { + stripe_aggregate_xattr (local->xattr, xdata); + } + + local->stbuf_blocks += buf->ia_blocks; + local->postparent_blocks += postparent->ia_blocks; + + correct_file_size(buf, local->fctx, prev); + + if (local->stbuf_size < buf->ia_size) + local->stbuf_size = buf->ia_size; + if (local->postparent_size < postparent->ia_size) + local->postparent_size = postparent->ia_size; + + if (uuid_is_null (local->ia_gfid)) + uuid_copy (local->ia_gfid, buf->ia_gfid); + + /* Make sure the gfid on all the nodes are same */ + if (uuid_compare (local->ia_gfid, buf->ia_gfid)) { + gf_log (this->name, GF_LOG_WARNING, + "%s: gfid different on subvolume %s", + local->loc.path, prev->this->name); + } + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->op_ret == 0 && local->entry_self_heal_needed && + !uuid_is_null (local->loc.inode->gfid)) + stripe_entry_self_heal (frame, this, local); + + if (local->failed) + local->op_ret = -1; + + if (local->op_ret != -1) { + local->stbuf.ia_blocks = local->stbuf_blocks; + local->stbuf.ia_size = local->stbuf_size; + local->postparent.ia_blocks = local->postparent_blocks; + local->postparent.ia_size = local->postparent_size; + inode_ctx_put (local->inode, this, + (uint64_t) (long)local->fctx); + } + + STRIPE_STACK_UNWIND (lookup, frame, local->op_ret, + local->op_errno, local->inode, + &local->stbuf, local->xdata, + &local->postparent); + } +out: + return 0; } -/** - * stripe_stack_unwind_cbk - This function is used for all the _cbk without - * any extra arguments (other than the minimum given) - * This is called from functions like fsync,unlink,rmdir etc. - * - */ -int32_t -stripe_stack_unwind_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) +int32_t +stripe_lookup (call_frame_t *frame, xlator_t *this, loc_t *loc, + dict_t *xdata) { - int32_t callcnt = 0; - stripe_local_t *local = frame->local; + stripe_local_t *local = NULL; + xlator_list_t *trav = NULL; + stripe_private_t *priv = NULL; + int32_t op_errno = EINVAL; + int64_t filesize = 0; + int ret = 0; + uint64_t tmpctx = 0; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + trav = this->children; + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + loc_copy (&local->loc, loc); + + inode_ctx_get (local->inode, this, &tmpctx); + if (tmpctx) + local->fctx = (stripe_fd_ctx_t*) (long)tmpctx; + + /* quick-read friendly changes */ + if (xdata && dict_get (xdata, GF_CONTENT_KEY)) { + ret = dict_get_int64 (xdata, GF_CONTENT_KEY, &filesize); + if (!ret && (filesize > priv->block_size)) + dict_del (xdata, GF_CONTENT_KEY); + } + + /* get stripe-size xattr on lookup. This would be required for + * open/read/write/pathinfo calls. Hence we send down the request + * even when type == IA_INVAL */ + + /* + * We aren't guaranteed to have xdata here. We need the format info for + * the file, so allocate xdata if necessary. + */ + if (!xdata) + xdata = dict_new(); + else + xdata = dict_ref(xdata); + + if (xdata && (IA_ISREG (loc->inode->ia_type) || + (loc->inode->ia_type == IA_INVAL))) { + ret = stripe_xattr_request_build (this, xdata, 8, 4, 4, 0); + if (ret) + gf_log (this->name , GF_LOG_ERROR, "Failed to build" + " xattr request for %s", loc->path); + + } + + /* Everytime in stripe lookup, all child nodes + should be looked up */ + local->call_count = priv->child_count; + while (trav) { + STACK_WIND (frame, stripe_lookup_cbk, trav->xlator, + trav->xlator->fops->lookup, loc, xdata); + trav = trav->next; + } + + dict_unref(xdata); + + return 0; +err: + STRIPE_STACK_UNWIND (lookup, frame, -1, op_errno, NULL, NULL, NULL, NULL); + return 0; +} - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->op_errno = op_errno; - if (op_errno == ENOTCONN) - local->failed = 1; - } - if (op_ret >= 0) - local->op_ret = op_ret; + +int32_t +stripe_stat_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *buf, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + } + + if (op_ret == 0) { + local->op_ret = 0; + + if (FIRST_CHILD(this) == prev->this) { + local->stbuf = *buf; + } + + local->stbuf_blocks += buf->ia_blocks; + + correct_file_size(buf, local->fctx, prev); + + if (local->stbuf_size < buf->ia_size) + local->stbuf_size = buf->ia_size; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + if (local->op_ret != -1) { + local->stbuf.ia_size = local->stbuf_size; + local->stbuf.ia_blocks = local->stbuf_blocks; + } + + STRIPE_STACK_UNWIND (stat, frame, local->op_ret, + local->op_errno, &local->stbuf, NULL); + } +out: + return 0; +} + +int32_t +stripe_stat (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata) +{ + xlator_list_t *trav = NULL; + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + stripe_fd_ctx_t *fctx = NULL; + int32_t op_errno = EINVAL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + trav = this->children; + + if (priv->first_child_down) { + op_errno = ENOTCONN; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + local->call_count = priv->child_count; + + if (IA_ISREG(loc->inode->ia_type)) { + inode_ctx_get(loc->inode, this, (uint64_t *) &fctx); + if (!fctx) + goto err; + local->fctx = fctx; } - UNLOCK (&frame->lock); - if (!callcnt) { - if (local->failed) - local->op_ret = -1; + while (trav) { + STACK_WIND (frame, stripe_stat_cbk, trav->xlator, + trav->xlator->fops->stat, loc, NULL); + trav = trav->next; + } - if (local->loc.path) - loc_wipe (&local->loc); - if (local->loc2.path) - loc_wipe (&local->loc2); + return 0; - STACK_UNWIND (frame, local->op_ret, local->op_errno); - } - return 0; +err: + STRIPE_STACK_UNWIND (stat, frame, -1, op_errno, NULL, NULL); + return 0; } -int32_t -stripe_common_buf_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) + +int32_t +stripe_statfs_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct statvfs *stbuf, dict_t *xdata) { - STACK_UNWIND (frame, op_ret, op_errno, buf); - return 0; + stripe_local_t *local = NULL; + int32_t callcnt = 0; + + if (!this || !frame || !frame->local) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + local = frame->local; + + LOCK(&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret && (op_errno != ENOTCONN)) { + local->op_errno = op_errno; + } + if (op_ret == 0) { + struct statvfs *dict_buf = &local->statvfs_buf; + dict_buf->f_bsize = stbuf->f_bsize; + dict_buf->f_frsize = stbuf->f_frsize; + dict_buf->f_blocks += stbuf->f_blocks; + dict_buf->f_bfree += stbuf->f_bfree; + dict_buf->f_bavail += stbuf->f_bavail; + dict_buf->f_files += stbuf->f_files; + dict_buf->f_ffree += stbuf->f_ffree; + dict_buf->f_favail += stbuf->f_favail; + dict_buf->f_fsid = stbuf->f_fsid; + dict_buf->f_flag = stbuf->f_flag; + dict_buf->f_namemax = stbuf->f_namemax; + local->op_ret = 0; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + STRIPE_STACK_UNWIND (statfs, frame, local->op_ret, + local->op_errno, &local->statvfs_buf, NULL); + } +out: + return 0; } -/** - * stripe_stack_unwind_buf_cbk - This function is used for all the _cbk with - * 'struct stat *buf' as extra argument (other than minimum) - * This is called from functions like, chmod, fchmod, chown, fchown, - * truncate, ftruncate, utimens etc. - * - * @cookie - this argument should be always 'xlator_t *' of child node - */ -int32_t -stripe_stack_unwind_buf_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) +int32_t +stripe_statfs (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata) { - int32_t callcnt = 0; - stripe_local_t *local = frame->local; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->op_errno = op_errno; - if (op_errno == ENOTCONN) - local->failed = 1; - } - - if (op_ret == 0) { - local->op_ret = 0; - if (local->stbuf.st_blksize == 0) { - local->stbuf = *buf; - /* Because st_blocks gets added again */ - local->stbuf.st_blocks = 0; - } - - if (FIRST_CHILD(this) == - ((call_frame_t *)cookie)->this) { - /* Always, pass the inode number of - first child to the above layer */ - local->stbuf.st_ino = buf->st_ino; - local->stbuf.st_mtime = buf->st_mtime; - } - - local->stbuf.st_blocks += buf->st_blocks; - if (local->stbuf.st_size < buf->st_size) - local->stbuf.st_size = buf->st_size; - if (local->stbuf.st_blksize != buf->st_blksize) { - /* TODO: add to blocks in terms of - original block size */ - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->failed) - local->op_ret = -1; + stripe_local_t *local = NULL; + xlator_list_t *trav = NULL; + stripe_private_t *priv = NULL; + int32_t op_errno = EINVAL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + + trav = this->children; + priv = this->private; + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + local->op_errno = ENOTCONN; + frame->local = local; + + local->call_count = priv->child_count; + while (trav) { + STACK_WIND (frame, stripe_statfs_cbk, trav->xlator, + trav->xlator->fops->statfs, loc, NULL); + trav = trav->next; + } + + return 0; +err: + STRIPE_STACK_UNWIND (statfs, frame, -1, op_errno, NULL, NULL); + return 0; +} - if (local->loc.path) - loc_wipe (&local->loc); - if (local->loc2.path) - loc_wipe (&local->loc2); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf); - } - return 0; +int32_t +stripe_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + } + + if (op_ret == 0) { + local->op_ret = 0; + if (FIRST_CHILD(this) == prev->this) { + local->pre_buf = *prebuf; + local->post_buf = *postbuf; + } + + local->prebuf_blocks += prebuf->ia_blocks; + local->postbuf_blocks += postbuf->ia_blocks; + + correct_file_size(prebuf, local->fctx, prev); + correct_file_size(postbuf, local->fctx, prev); + + if (local->prebuf_size < prebuf->ia_size) + local->prebuf_size = prebuf->ia_size; + + if (local->postbuf_size < postbuf->ia_size) + local->postbuf_size = postbuf->ia_size; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + if (local->op_ret != -1) { + local->pre_buf.ia_blocks = local->prebuf_blocks; + local->pre_buf.ia_size = local->prebuf_size; + local->post_buf.ia_blocks = local->postbuf_blocks; + local->post_buf.ia_size = local->postbuf_size; + } + + STRIPE_STACK_UNWIND (truncate, frame, local->op_ret, + local->op_errno, &local->pre_buf, + &local->post_buf, NULL); + } +out: + return 0; } -/* In case of symlink, mknod, the file is created on just first node */ -int32_t -stripe_common_inode_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf) +int32_t +stripe_truncate (call_frame_t *frame, xlator_t *this, loc_t *loc, off_t offset, dict_t *xdata) { - STACK_UNWIND (frame, op_ret, op_errno, inode, buf); - return 0; -} + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + stripe_fd_ctx_t *fctx = NULL; + int32_t op_errno = EINVAL; + int i, eof_idx; + off_t dest_offset, tmp_offset; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + + if (priv->first_child_down) { + op_errno = ENOTCONN; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + local->call_count = priv->child_count; + + inode_ctx_get(loc->inode, this, (uint64_t *) &fctx); + if (!fctx) { + gf_log(this->name, GF_LOG_ERROR, "no stripe context"); + op_errno = EINVAL; + goto err; + } -/** - * stripe_stack_unwind_inode_cbk - This is called by the function like, - * link (), symlink (), mkdir (), mknod () - * This creates a inode for new inode. It keeps a list of all - * the inodes received from the child nodes. It is used while - * forwarding any fops to child nodes. - * - */ -int32_t -stripe_stack_unwind_inode_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf) -{ - int32_t callcnt = 0; - stripe_local_t *local = frame->local; + local->fctx = fctx; + eof_idx = (offset / fctx->stripe_size) % fctx->stripe_count; - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->op_errno = op_errno; - if (op_errno == ENOTCONN) - local->failed = 1; + for (i = 0; i < fctx->stripe_count; i++) { + if (!fctx->xl_array[i]) { + gf_log(this->name, GF_LOG_ERROR, + "no xlator at index %d", i); + op_errno = EINVAL; + goto err; } - - if (op_ret >= 0) { - local->op_ret = 0; - - if (local->stbuf.st_blksize == 0) { - local->inode = inode; - local->stbuf = *buf; - /* Because st_blocks gets added again */ - local->stbuf.st_blocks = 0; - } - if (FIRST_CHILD(this) == - ((call_frame_t *)cookie)->this) { - local->stbuf.st_ino = buf->st_ino; - local->stbuf.st_mtime = buf->st_mtime; - } - local->stbuf.st_blocks += buf->st_blocks; - if (local->stbuf.st_size < buf->st_size) - local->stbuf.st_size = buf->st_size; - if (local->stbuf.st_blksize != buf->st_blksize) { - /* TODO: add to blocks in terms of - original block size */ - } + if (fctx->stripe_coalesce) { + /* + * The node that owns EOF is truncated to the exact + * coalesced offset. Nodes prior to this index should + * be rounded up to the size of the complete stripe, + * while nodes after this index should be rounded down + * to the size of the previous stripe. + */ + if (i < eof_idx) + tmp_offset = roof(offset, fctx->stripe_size * + fctx->stripe_count); + else if (i > eof_idx) + tmp_offset = floor(offset, fctx->stripe_size * + fctx->stripe_count); + else + tmp_offset = offset; + + dest_offset = coalesced_offset(tmp_offset, + fctx->stripe_size, fctx->stripe_count); + } else { + dest_offset = offset; } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->failed) - local->op_ret = -1; - STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->inode, &local->stbuf); + STACK_WIND(frame, stripe_truncate_cbk, fctx->xl_array[i], + fctx->xl_array[i]->fops->truncate, loc, dest_offset, + NULL); } - return 0; + return 0; +err: + STRIPE_STACK_UNWIND (truncate, frame, -1, op_errno, NULL, NULL, NULL); + return 0; } -int32_t -stripe_stack_unwind_inode_lookup_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf, - dict_t *dict) -{ - int32_t callcnt = 0; - dict_t *tmp_dict = NULL; - stripe_local_t *local = frame->local; - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - if (op_errno != ENOENT) - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - if (local->op_errno != ESTALE) - local->op_errno = op_errno; - if ((op_errno == ENOTCONN) - || (op_errno == ESTALE)) - local->failed = 1; - } - - if (op_ret >= 0) { - local->op_ret = 0; - - if (local->stbuf.st_blksize == 0) { - local->inode = inode; - local->stbuf = *buf; - /* Because st_blocks gets added again */ - local->stbuf.st_blocks = 0; - } - if (FIRST_CHILD(this) == - ((call_frame_t *)cookie)->this) { - local->stbuf.st_ino = buf->st_ino; - local->stbuf.st_mtime = buf->st_mtime; - if (local->dict) - dict_unref (local->dict); - local->dict = dict_ref (dict); - } else { - if (!local->dict) - local->dict = dict_ref (dict); - } - local->stbuf.st_blocks += buf->st_blocks; - if (local->stbuf.st_size < buf->st_size) - local->stbuf.st_size = buf->st_size; - if (local->stbuf.st_blksize != buf->st_blksize) { - /* TODO: add to blocks in terms of - original block size */ - } - } - } - UNLOCK (&frame->lock); +int32_t +stripe_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *preop, struct iatt *postop, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + } + + if (op_ret == 0) { + local->op_ret = 0; + + if (FIRST_CHILD(this) == prev->this) { + local->pre_buf = *preop; + local->post_buf = *postop; + } + + local->prebuf_blocks += preop->ia_blocks; + local->postbuf_blocks += postop->ia_blocks; + + correct_file_size(preop, local->fctx, prev); + correct_file_size(postop, local->fctx, prev); + + if (local->prebuf_size < preop->ia_size) + local->prebuf_size = preop->ia_size; + if (local->postbuf_size < postop->ia_size) + local->postbuf_size = postop->ia_size; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + if (local->op_ret != -1) { + local->pre_buf.ia_blocks = local->prebuf_blocks; + local->pre_buf.ia_size = local->prebuf_size; + local->post_buf.ia_blocks = local->postbuf_blocks; + local->post_buf.ia_size = local->postbuf_size; + } + + STRIPE_STACK_UNWIND (setattr, frame, local->op_ret, + local->op_errno, &local->pre_buf, + &local->post_buf, NULL); + } +out: + return 0; +} - if (!callcnt) { - if (local->failed) - local->op_ret = -1; - tmp_dict = local->dict; - STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->inode, &local->stbuf, local->dict); - if (tmp_dict) - dict_unref (tmp_dict); +int32_t +stripe_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc, + struct iatt *stbuf, int32_t valid, dict_t *xdata) +{ + xlator_list_t *trav = NULL; + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + stripe_fd_ctx_t *fctx = NULL; + int32_t op_errno = EINVAL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + trav = this->children; + + if (priv->first_child_down) { + op_errno = ENOTCONN; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + if (!IA_ISDIR (loc->inode->ia_type) && + !IA_ISREG (loc->inode->ia_type)) { + local->call_count = 1; + STACK_WIND (frame, stripe_setattr_cbk, FIRST_CHILD (this), + FIRST_CHILD (this)->fops->setattr, + loc, stbuf, valid, NULL); + return 0; + } + + if (IA_ISREG(loc->inode->ia_type)) { + inode_ctx_get(loc->inode, this, (uint64_t *) &fctx); + if (!fctx) + goto err; + local->fctx = fctx; } - return 0; + local->call_count = priv->child_count; + while (trav) { + STACK_WIND (frame, stripe_setattr_cbk, + trav->xlator, trav->xlator->fops->setattr, + loc, stbuf, valid, NULL); + trav = trav->next; + } + + return 0; +err: + STRIPE_STACK_UNWIND (setattr, frame, -1, op_errno, NULL, NULL, NULL); + return 0; } -/** - * stripe_lookup - - */ -int32_t -stripe_lookup (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - dict_t *xattr_req) -{ - stripe_local_t *local = NULL; - xlator_list_t *trav = NULL; - stripe_private_t *priv = this->private; - char send_lookup_to_all = 0; - - if (!(loc && loc->inode)) { - gf_log (this->name, GF_LOG_ERROR, - "wrong argument, returning EINVAL"); - STACK_UNWIND (frame, -1, EINVAL, NULL, NULL, NULL); - return 0; - } - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - - if ((!loc->inode->st_mode) || - S_ISDIR (loc->inode->st_mode) || - S_ISREG (loc->inode->st_mode)) - send_lookup_to_all = 1; - - if (send_lookup_to_all) { - /* Everytime in stripe lookup, all child nodes - should be looked up */ - local->call_count = priv->child_count; - trav = this->children; - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_inode_lookup_cbk, - trav->xlator, - trav->xlator->fops->lookup, - loc, xattr_req); - trav = trav->next; - } - } else { - local->call_count = 1; - - STACK_WIND (frame, - stripe_stack_unwind_inode_lookup_cbk, - FIRST_CHILD(this), - FIRST_CHILD(this)->fops->lookup, - loc, xattr_req); - } - - return 0; +int32_t +stripe_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd, + struct iatt *stbuf, int32_t valid, dict_t *xdata) +{ + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + xlator_list_t *trav = NULL; + int32_t op_errno = EINVAL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + priv = this->private; + trav = this->children; + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + local->call_count = priv->child_count; + + while (trav) { + STACK_WIND (frame, stripe_setattr_cbk, trav->xlator, + trav->xlator->fops->fsetattr, fd, stbuf, valid, NULL); + trav = trav->next; + } + + return 0; +err: + STRIPE_STACK_UNWIND (fsetattr, frame, -1, op_errno, NULL, NULL, NULL); + return 0; } -/** - * stripe_stat - - */ int32_t -stripe_stat (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - int send_lookup_to_all = 0; - xlator_list_t *trav = NULL; - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode)) - send_lookup_to_all = 1; - - if (!send_lookup_to_all) { - STACK_WIND (frame, - stripe_common_buf_cbk, - FIRST_CHILD(this), - FIRST_CHILD(this)->fops->stat, - loc); - } else { - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->inode = loc->inode; - local->call_count = priv->child_count; - - trav = this->children; - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_buf_cbk, - trav->xlator, - trav->xlator->fops->stat, - loc); - trav = trav->next; - } - } - return 0; +stripe_stack_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *buf, + struct iatt *preoldparent, struct iatt *postoldparent, + struct iatt *prenewparent, struct iatt *postnewparent, + dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + } + + if (op_ret == 0) { + local->op_ret = 0; + + local->stbuf.ia_blocks += buf->ia_blocks; + local->preparent.ia_blocks += preoldparent->ia_blocks; + local->postparent.ia_blocks += postoldparent->ia_blocks; + local->pre_buf.ia_blocks += prenewparent->ia_blocks; + local->post_buf.ia_blocks += postnewparent->ia_blocks; + + correct_file_size(buf, local->fctx, prev); + + if (local->stbuf.ia_size < buf->ia_size) + local->stbuf.ia_size = buf->ia_size; + + if (local->preparent.ia_size < preoldparent->ia_size) + local->preparent.ia_size = preoldparent->ia_size; + + if (local->postparent.ia_size < postoldparent->ia_size) + local->postparent.ia_size = postoldparent->ia_size; + + if (local->pre_buf.ia_size < prenewparent->ia_size) + local->pre_buf.ia_size = prenewparent->ia_size; + + if (local->post_buf.ia_size < postnewparent->ia_size) + local->post_buf.ia_size = postnewparent->ia_size; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + STRIPE_STACK_UNWIND (rename, frame, local->op_ret, local->op_errno, + &local->stbuf, &local->preparent, + &local->postparent, &local->pre_buf, + &local->post_buf, NULL); + } +out: + return 0; } - -/** - * stripe_chmod - - */ int32_t -stripe_chmod (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode) +stripe_first_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *buf, + struct iatt *preoldparent, struct iatt *postoldparent, + struct iatt *prenewparent, struct iatt *postnewparent, + dict_t *xdata) { - int send_fop_to_all = 0; - xlator_list_t *trav = NULL; - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); + stripe_local_t *local = NULL; + xlator_list_t *trav = NULL; + + if (!this || !frame || !frame->local) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + op_errno = EINVAL; + goto unwind; + } + + if (op_ret == -1) { + goto unwind; + } + + local = frame->local; + trav = this->children; + + local->stbuf = *buf; + local->preparent = *preoldparent; + local->postparent = *postoldparent; + local->pre_buf = *prenewparent; + local->post_buf = *postnewparent; + + local->op_ret = 0; + local->call_count--; + + trav = trav->next; /* Skip first child */ + while (trav) { + STACK_WIND (frame, stripe_stack_rename_cbk, + trav->xlator, trav->xlator->fops->rename, + &local->loc, &local->loc2, NULL); + trav = trav->next; + } + return 0; + +unwind: + STRIPE_STACK_UNWIND (rename, frame, -1, op_errno, buf, preoldparent, + postoldparent, prenewparent, postnewparent, NULL); + return 0; +} - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning ENOTCONN"); - STACK_UNWIND (frame, -1, ENOTCONN, NULL); - return 0; +int32_t +stripe_rename (call_frame_t *frame, xlator_t *this, loc_t *oldloc, + loc_t *newloc, dict_t *xdata) +{ + stripe_private_t *priv = NULL; + stripe_local_t *local = NULL; + xlator_list_t *trav = NULL; + stripe_fd_ctx_t *fctx = NULL; + int32_t op_errno = EINVAL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (oldloc, err); + VALIDATE_OR_GOTO (oldloc->path, err); + VALIDATE_OR_GOTO (oldloc->inode, err); + VALIDATE_OR_GOTO (newloc, err); + + priv = this->private; + trav = this->children; + + /* If any one node is down, don't allow rename */ + if (priv->nodes_down) { + op_errno = ENOTCONN; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + loc_copy (&local->loc, oldloc); + loc_copy (&local->loc2, newloc); + + local->call_count = priv->child_count; + + if (IA_ISREG(oldloc->inode->ia_type)) { + inode_ctx_get(oldloc->inode, this, (uint64_t *) &fctx); + if (!fctx) + goto err; + local->fctx = fctx; } - if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode)) - send_fop_to_all = 1; - - if (!send_fop_to_all) { - STACK_WIND (frame, - stripe_common_buf_cbk, - FIRST_CHILD(this), - FIRST_CHILD(this)->fops->chmod, - loc, mode); - } else { - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->inode = loc->inode; - local->call_count = priv->child_count; - - trav = this->children; - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_buf_cbk, - trav->xlator, - trav->xlator->fops->chmod, - loc, mode); - trav = trav->next; - } - } - return 0; -} + frame->local = local; + STACK_WIND (frame, stripe_first_rename_cbk, trav->xlator, + trav->xlator->fops->rename, oldloc, newloc, NULL); -/** - * stripe_chown - - */ + return 0; +err: + STRIPE_STACK_UNWIND (rename, frame, -1, op_errno, NULL, NULL, NULL, + NULL, NULL, NULL); + return 0; +} int32_t -stripe_chown (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - uid_t uid, - gid_t gid) +stripe_first_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - int send_fop_to_all = 0; - xlator_list_t *trav = NULL; - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning ENOTCONN"); - STACK_UNWIND (frame, -1, ENOTCONN, NULL); - return 0; - } + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, "%s returned %s", + prev->this->name, strerror (op_errno)); + goto out; + } + local->op_ret = 0; + local->preparent = *preparent; + local->postparent = *postparent; + local->preparent_blocks += preparent->ia_blocks; + local->postparent_blocks += postparent->ia_blocks; + + STRIPE_STACK_UNWIND(unlink, frame, local->op_ret, local->op_errno, + &local->preparent, &local->postparent, xdata); + return 0; +out: + STRIPE_STACK_UNWIND (unlink, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; +} - if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode)) - send_fop_to_all = 1; - - trav = this->children; - if (!send_fop_to_all) { - STACK_WIND (frame, - stripe_common_buf_cbk, - trav->xlator, - trav->xlator->fops->chown, - loc, uid, gid); - } else { - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->inode = loc->inode; - local->call_count = priv->child_count; - - trav = this->children; - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_buf_cbk, - trav->xlator, - trav->xlator->fops->chown, - loc, uid, gid); - trav = trav->next; - } - } - return 0; -} -/** - * stripe_statfs_cbk - - */ int32_t -stripe_statfs_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct statvfs *stbuf) -{ - stripe_local_t *local = (stripe_local_t *)frame->local; - int32_t callcnt; - LOCK(&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret != 0 && op_errno != ENOTCONN) { - local->op_errno = op_errno; - } - if (op_ret == 0) { - struct statvfs *dict_buf = &local->statvfs_buf; - dict_buf->f_bsize = stbuf->f_bsize; - dict_buf->f_frsize = stbuf->f_frsize; - dict_buf->f_blocks += stbuf->f_blocks; - dict_buf->f_bfree += stbuf->f_bfree; - dict_buf->f_bavail += stbuf->f_bavail; - dict_buf->f_files += stbuf->f_files; - dict_buf->f_ffree += stbuf->f_ffree; - dict_buf->f_favail += stbuf->f_favail; - dict_buf->f_fsid = stbuf->f_fsid; - dict_buf->f_flag = stbuf->f_flag; - dict_buf->f_namemax = stbuf->f_namemax; - local->op_ret = 0; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - STACK_UNWIND (frame, local->op_ret, - local->op_errno, &local->statvfs_buf); - } - - return 0; +stripe_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, "%s returned %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if (op_errno != ENOENT) { + local->failed = 1; + local->op_ret = op_ret; + } + } + } + UNLOCK (&frame->lock); + + if (callcnt == 1) { + if (local->failed) { + op_errno = local->op_errno; + goto out; + } + STACK_WIND(frame, stripe_first_unlink_cbk, FIRST_CHILD (this), + FIRST_CHILD (this)->fops->unlink, &local->loc, + local->xflag, local->xdata); + } + return 0; +out: + STRIPE_STACK_UNWIND (unlink, frame, -1, op_errno, NULL, NULL, NULL); + + return 0; } - -/** - * stripe_statfs - - */ int32_t -stripe_statfs (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - stripe_local_t *local = NULL; - xlator_list_t *trav = this->children; - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - local->op_errno = ENOTCONN; - frame->local = local; - - local->call_count = ((stripe_private_t *)this->private)->child_count; - while (trav) { - STACK_WIND (frame, - stripe_statfs_cbk, - trav->xlator, - trav->xlator->fops->statfs, - loc); - trav = trav->next; - } - - return 0; +stripe_unlink (call_frame_t *frame, xlator_t *this, loc_t *loc, + int xflag, dict_t *xdata) +{ + xlator_list_t *trav = NULL; + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + int32_t op_errno = EINVAL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + trav = this->children; + + if (priv->first_child_down) { + op_errno = ENOTCONN; + goto err; + } + + /* Don't unlink a file if a node is down */ + if (priv->nodes_down) { + op_errno = ENOTCONN; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + loc_copy (&local->loc, loc); + local->xflag = xflag; + + if (xdata) + local->xdata = dict_ref (xdata); + + frame->local = local; + local->call_count = priv->child_count; + trav = trav->next; /* Skip the first child */ + + while (trav) { + STACK_WIND (frame, stripe_unlink_cbk, + trav->xlator, trav->xlator->fops->unlink, + loc, xflag, xdata); + trav = trav->next; + } + + return 0; +err: + STRIPE_STACK_UNWIND (unlink, frame, -1, op_errno, NULL, NULL, NULL); + return 0; } -/** - * stripe_truncate - - */ int32_t -stripe_truncate (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - off_t offset) +stripe_first_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno,struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - int send_fop_to_all = 0; - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; + stripe_local_t *local = NULL; - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); + if (!this || !frame || !frame->local) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + op_errno = EINVAL; + goto err; + } - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning ENOTCONN"); - STACK_UNWIND (frame, -1, ENOTCONN, NULL); - return 0; - } + if (op_ret == -1) { + goto err; + } - if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode)) - send_fop_to_all = 1; - - if (!send_fop_to_all) { - STACK_WIND (frame, - stripe_common_buf_cbk, - trav->xlator, - trav->xlator->fops->truncate, - loc, - offset); - } else { - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->inode = loc->inode; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_buf_cbk, - trav->xlator, - trav->xlator->fops->truncate, - loc, - offset); - trav = trav->next; - } - } + local = frame->local; + local->op_ret = 0; - return 0; -} + local->call_count--; /* First child successful */ + local->preparent = *preparent; + local->postparent = *postparent; + local->preparent_size = preparent->ia_size; + local->postparent_size = postparent->ia_size; + local->preparent_blocks += preparent->ia_blocks; + local->postparent_blocks += postparent->ia_blocks; -/** - * stripe_utimens - - */ -int32_t -stripe_utimens (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - struct timespec tv[2]) -{ - int send_fop_to_all = 0; - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning ENOTCONN"); - STACK_UNWIND (frame, -1, ENOTCONN, NULL); - return 0; - } + STRIPE_STACK_UNWIND (rmdir, frame, local->op_ret, local->op_errno, + &local->preparent, &local->postparent, xdata); + return 0; +err: + STRIPE_STACK_UNWIND (rmdir, frame, op_ret, op_errno, NULL, NULL, NULL); + return 0; - if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode)) - send_fop_to_all = 1; - - if (!send_fop_to_all) { - STACK_WIND (frame, - stripe_common_buf_cbk, - trav->xlator, - trav->xlator->fops->utimens, - loc, tv); - } else { - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->inode = loc->inode; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_buf_cbk, - trav->xlator, - trav->xlator->fops->utimens, - loc, tv); - trav = trav->next; - } - } - return 0; } - -int32_t -stripe_first_rename_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) +int32_t +stripe_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - stripe_local_t *local = frame->local; - xlator_list_t *trav = this->children; + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, "%s returned %s", + prev->this->name, strerror (op_errno)); + if (op_errno != ENOENT) + local->failed = 1; + } + } + UNLOCK (&frame->lock); + + if (callcnt == 1) { + if (local->failed) + goto out; + STACK_WIND (frame, stripe_first_rmdir_cbk, FIRST_CHILD (this), + FIRST_CHILD (this)->fops->rmdir, &local->loc, + local->flags, NULL); + } + return 0; +out: + STRIPE_STACK_UNWIND (rmdir, frame, -1, op_errno, NULL, NULL, NULL); + return 0; +} - if (op_ret == -1) - { - STACK_UNWIND (frame, op_ret, op_errno, buf); - return 0; - } +int32_t +stripe_rmdir (call_frame_t *frame, xlator_t *this, loc_t *loc, int flags, dict_t *xdata) +{ + xlator_list_t *trav = NULL; + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + int32_t op_errno = EINVAL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + trav = this->children; + + /* don't delete a directory if any of the subvolume is down */ + if (priv->nodes_down) { + op_errno = ENOTCONN; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + loc_copy (&local->loc, loc); + local->flags = flags; + local->call_count = priv->child_count; + trav = trav->next; /* skip the first child */ + + while (trav) { + STACK_WIND (frame, stripe_rmdir_cbk, trav->xlator, + trav->xlator->fops->rmdir, loc, flags, NULL); + trav = trav->next; + } + + return 0; +err: + STRIPE_STACK_UNWIND (rmdir, frame, -1, op_errno, NULL, NULL, NULL); + return 0; +} - local->op_ret = 0; - local->stbuf = *buf; - local->call_count--; - trav = trav->next; /* Skip first child */ - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_buf_cbk, - trav->xlator, - trav->xlator->fops->rename, - &local->loc, &local->loc2); - trav = trav->next; - } - return 0; +int32_t +stripe_mknod_ifreg_fail_unlink_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, + int32_t op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + + if (!this || !frame || !frame->local) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + } + UNLOCK (&frame->lock); + + if (!callcnt) { + STRIPE_STACK_UNWIND (mknod, frame, local->op_ret, local->op_errno, + local->inode, &local->stbuf, + &local->preparent, &local->postparent, NULL); + } +out: + return 0; } + + /** - * stripe_rename - */ int32_t -stripe_rename (call_frame_t *frame, - xlator_t *this, - loc_t *oldloc, - loc_t *newloc) +stripe_mknod_ifreg_setxattr_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, + int32_t op_errno, dict_t *xdata) { - stripe_private_t *priv = this->private; - stripe_local_t *local = NULL; - xlator_list_t *trav = this->children; + int32_t callcnt = 0; + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + xlator_list_t *trav = NULL; + call_frame_t *prev = NULL; - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (oldloc); + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning ENOTCONN"); - STACK_UNWIND (frame, -1, EIO, NULL); - return 0; - } + prev = cookie; + priv = this->private; + local = frame->local; - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - local->inode = oldloc->inode; - loc_copy (&local->loc, oldloc); - loc_copy (&local->loc2, newloc); + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_ret = -1; + local->op_errno = op_errno; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->op_ret == -1) { + local->call_count = priv->child_count; + while (trav) { + STACK_WIND (frame, + stripe_mknod_ifreg_fail_unlink_cbk, + trav->xlator, + trav->xlator->fops->unlink, + &local->loc, 0, NULL); + trav = trav->next; + } + return 0; + } + + STRIPE_STACK_UNWIND (mknod, frame, local->op_ret, local->op_errno, + local->inode, &local->stbuf, + &local->preparent, &local->postparent, NULL); + } +out: + return 0; +} - local->call_count = priv->child_count; - - frame->local = local; +int32_t +stripe_mknod_ifreg_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + call_frame_t *prev = NULL; + xlator_list_t *trav = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + priv = this->private; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + local->op_errno = op_errno; + } + if (op_ret >= 0) { + local->op_ret = op_ret; + + /* Can be used as a mechanism to understand if mknod + was successful in at least one place */ + if (uuid_is_null (local->ia_gfid)) + uuid_copy (local->ia_gfid, buf->ia_gfid); + + if (stripe_ctx_handle(this, prev, local, xdata)) + gf_log(this->name, GF_LOG_ERROR, + "Error getting fctx info from dict"); + + local->stbuf_blocks += buf->ia_blocks; + local->preparent_blocks += preparent->ia_blocks; + local->postparent_blocks += postparent->ia_blocks; + + correct_file_size(buf, local->fctx, prev); + + if (local->stbuf_size < buf->ia_size) + local->stbuf_size = buf->ia_size; + if (local->preparent_size < preparent->ia_size) + local->preparent_size = preparent->ia_size; + if (local->postparent_size < postparent->ia_size) + local->postparent_size = postparent->ia_size; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + if ((local->op_ret == -1) && !uuid_is_null (local->ia_gfid)) { + /* ia_gfid set means, at least on one node 'mknod' + is successful */ + local->call_count = priv->child_count; + trav = this->children; + while (trav) { + STACK_WIND (frame, + stripe_mknod_ifreg_fail_unlink_cbk, + trav->xlator, + trav->xlator->fops->unlink, + &local->loc, 0, NULL); + trav = trav->next; + } + return 0; + } + + + if (local->op_ret != -1) { + local->preparent.ia_blocks = local->preparent_blocks; + local->preparent.ia_size = local->preparent_size; + local->postparent.ia_blocks = local->postparent_blocks; + local->postparent.ia_size = local->postparent_size; + local->stbuf.ia_size = local->stbuf_size; + local->stbuf.ia_blocks = local->stbuf_blocks; + inode_ctx_put (local->inode, this, + (uint64_t)(long) local->fctx); + + } + STRIPE_STACK_UNWIND (mknod, frame, local->op_ret, local->op_errno, + local->inode, &local->stbuf, + &local->preparent, &local->postparent, NULL); + } +out: + return 0; +} - STACK_WIND (frame, - stripe_first_rename_cbk, - trav->xlator, - trav->xlator->fops->rename, - oldloc, newloc); - return 0; +int32_t +stripe_mknod_first_ifreg_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + call_frame_t *prev = NULL; + xlator_list_t *trav = NULL; + int i = 1; + dict_t *dict = NULL; + int ret = 0; + int need_unref = 0; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + priv = this->private; + local = frame->local; + trav = this->children; + + local->call_count--; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->failed = 1; + local->op_errno = op_errno; + goto out; + } + + local->op_ret = op_ret; + + local->stbuf = *buf; + local->preparent = *preparent; + local->postparent = *postparent; + + if (uuid_is_null (local->ia_gfid)) + uuid_copy (local->ia_gfid, buf->ia_gfid); + local->preparent.ia_blocks = local->preparent_blocks; + local->preparent.ia_size = local->preparent_size; + local->postparent.ia_blocks = local->postparent_blocks; + local->postparent.ia_size = local->postparent_size; + local->stbuf.ia_size = local->stbuf_size; + local->stbuf.ia_blocks = local->stbuf_blocks; + + trav = trav->next; + while (trav) { + if (priv->xattr_supported) { + dict = dict_new (); + if (!dict) { + gf_log (this->name, GF_LOG_ERROR, + "failed to allocate dict %s", local->loc.path); + } + need_unref = 1; + + dict_copy (local->xattr, dict); + + ret = stripe_xattr_request_build (this, dict, + local->stripe_size, + priv->child_count, i, + priv->coalesce); + if (ret) + gf_log (this->name, GF_LOG_ERROR, + "Failed to build xattr request"); + + } else { + dict = local->xattr; + } + + STACK_WIND (frame, stripe_mknod_ifreg_cbk, + trav->xlator, trav->xlator->fops->mknod, + &local->loc, local->mode, local->rdev, 0, dict); + trav = trav->next; + i++; + + if (dict && need_unref) + dict_unref (dict); + } + + return 0; + +out: + + STRIPE_STACK_UNWIND (mknod, frame, op_ret, op_errno, NULL, NULL, NULL, NULL, NULL); + return 0; } -/** - * stripe_access - - */ int32_t -stripe_access (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t mask) +stripe_single_mknod_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); + STRIPE_STACK_UNWIND (mknod, frame, op_ret, op_errno, inode, buf, + preparent, postparent, xdata); + return 0; +} - STACK_WIND (frame, - stripe_common_cbk, - FIRST_CHILD(this), - FIRST_CHILD(this)->fops->access, - loc, mask); - return 0; +int +stripe_mknod (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode, + dev_t rdev, mode_t umask, dict_t *xdata) +{ + stripe_private_t *priv = NULL; + stripe_local_t *local = NULL; + int32_t op_errno = EINVAL; + int32_t i = 0; + dict_t *dict = NULL; + int ret = 0; + int need_unref = 0; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + + if (priv->first_child_down) { + op_errno = ENOTCONN; + goto err; + } + + if (S_ISREG(mode)) { + /* NOTE: on older kernels (older than 2.6.9), + creat() fops is sent as mknod() + open(). Hence handling + S_IFREG files is necessary */ + if (priv->nodes_down) { + gf_log (this->name, GF_LOG_WARNING, + "Some node down, returning EIO"); + op_errno = EIO; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + local->op_errno = ENOTCONN; + local->stripe_size = stripe_get_matching_bs (loc->path, priv); + frame->local = local; + local->inode = inode_ref (loc->inode); + loc_copy (&local->loc, loc); + local->xattr = dict_copy_with_ref (xdata, NULL); + local->mode = mode; + local->umask = umask; + local->rdev = rdev; + + /* Everytime in stripe lookup, all child nodes should + be looked up */ + local->call_count = priv->child_count; + + if (priv->xattr_supported) { + dict = dict_new (); + if (!dict) { + gf_log (this->name, GF_LOG_ERROR, + "failed to allocate dict %s", loc->path); + } + need_unref = 1; + + dict_copy (xdata, dict); + + ret = stripe_xattr_request_build (this, dict, + local->stripe_size, + priv->child_count, + i, priv->coalesce); + if (ret) + gf_log (this->name, GF_LOG_ERROR, + "failed to build xattr request"); + } else { + dict = xdata; + } + + STACK_WIND (frame, stripe_mknod_first_ifreg_cbk, + FIRST_CHILD (this), FIRST_CHILD (this)->fops->mknod, + loc, mode, rdev, umask, dict); + + if (dict && need_unref) + dict_unref (dict); + return 0; + } + + STACK_WIND (frame, stripe_single_mknod_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->mknod, + loc, mode, rdev, umask, xdata); + + return 0; +err: + STRIPE_STACK_UNWIND (mknod, frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL); + return 0; } -/** - * stripe_readlink_cbk - - */ -int32_t -stripe_readlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - const char *path) +int32_t +stripe_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - STACK_UNWIND (frame, op_ret, op_errno, path); - - return 0; + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + } + + if (op_ret >= 0) { + local->op_ret = 0; + + local->stbuf_blocks += buf->ia_blocks; + local->preparent_blocks += preparent->ia_blocks; + local->postparent_blocks += postparent->ia_blocks; + + if (local->stbuf_size < buf->ia_size) + local->stbuf_size = buf->ia_size; + if (local->preparent_size < preparent->ia_size) + local->preparent_size = preparent->ia_size; + if (local->postparent_size < postparent->ia_size) + local->postparent_size = postparent->ia_size; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed != -1) { + local->preparent.ia_blocks = local->preparent_blocks; + local->preparent.ia_size = local->preparent_size; + local->postparent.ia_blocks = local->postparent_blocks; + local->postparent.ia_size = local->postparent_size; + local->stbuf.ia_size = local->stbuf_size; + local->stbuf.ia_blocks = local->stbuf_blocks; + } + STRIPE_STACK_UNWIND (mkdir, frame, local->op_ret, + local->op_errno, local->inode, + &local->stbuf, &local->preparent, + &local->postparent, NULL); + } +out: + return 0; } -/** - * stripe_readlink - - */ int32_t -stripe_readlink (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - size_t size) +stripe_first_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - stripe_private_t *priv = this->private; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + xlator_list_t *trav = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + trav = this->children; + + local->call_count--; /* first child is successful */ + trav = trav->next; /* skip first child */ + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + goto out; + } + + local->op_ret = 0; + + local->inode = inode_ref (inode); + local->stbuf = *buf; + local->postparent = *postparent; + local->preparent = *preparent; + + local->stbuf_blocks += buf->ia_blocks; + local->preparent_blocks += preparent->ia_blocks; + local->postparent_blocks += postparent->ia_blocks; + + local->stbuf_size = buf->ia_size; + local->preparent_size = preparent->ia_size; + local->postparent_size = postparent->ia_size; + + while (trav) { + STACK_WIND (frame, stripe_mkdir_cbk, trav->xlator, + trav->xlator->fops->mkdir, &local->loc, local->mode, + local->umask, local->xdata); + trav = trav->next; + } + return 0; +out: + STRIPE_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL, + NULL, NULL); + + return 0; - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning ENOTCONN"); - STACK_UNWIND (frame, -1, ENOTCONN, NULL); - return 0; - } +} - STACK_WIND (frame, - stripe_readlink_cbk, - FIRST_CHILD(this), - FIRST_CHILD(this)->fops->readlink, - loc, size); - return 0; +int +stripe_mkdir (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode, + mode_t umask, dict_t *xdata) +{ + stripe_private_t *priv = NULL; + stripe_local_t *local = NULL; + xlator_list_t *trav = NULL; + int32_t op_errno = 1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + trav = this->children; + + if (priv->first_child_down) { + op_errno = ENOTCONN; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + local->call_count = priv->child_count; + if (xdata) + local->xdata = dict_ref (xdata); + local->mode = mode; + local->umask = umask; + loc_copy (&local->loc, loc); + frame->local = local; + + /* Everytime in stripe lookup, all child nodes should be looked up */ + STACK_WIND (frame, stripe_first_mkdir_cbk, trav->xlator, + trav->xlator->fops->mkdir, loc, mode, umask, xdata); + + return 0; +err: + STRIPE_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL); + return 0; } -/** - * stripe_unlink - - */ int32_t -stripe_unlink (call_frame_t *frame, - xlator_t *this, - loc_t *loc) +stripe_link_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - int send_fop_to_all = 0; - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + stripe_fd_ctx_t *fctx = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + } + + if (op_ret >= 0) { + local->op_ret = 0; + + if (IA_ISREG(inode->ia_type)) { + inode_ctx_get(inode, this, (uint64_t *) &fctx); + if (!fctx) { + gf_log(this->name, GF_LOG_ERROR, + "failed to get stripe context"); + op_ret = -1; + op_errno = EINVAL; + } + } - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); + if (FIRST_CHILD(this) == prev->this) { + local->inode = inode_ref (inode); + local->stbuf = *buf; + local->postparent = *postparent; + local->preparent = *preparent; + } + local->stbuf_blocks += buf->ia_blocks; + local->preparent_blocks += preparent->ia_blocks; + local->postparent_blocks += postparent->ia_blocks; + + correct_file_size(buf, fctx, prev); + + if (local->stbuf_size < buf->ia_size) + local->stbuf_size = buf->ia_size; + if (local->preparent_size < preparent->ia_size) + local->preparent_size = preparent->ia_size; + if (local->postparent_size < postparent->ia_size) + local->postparent_size = postparent->ia_size; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + if (local->op_ret != -1) { + local->preparent.ia_blocks = local->preparent_blocks; + local->preparent.ia_size = local->preparent_size; + local->postparent.ia_blocks = local->postparent_blocks; + local->postparent.ia_size = local->postparent_size; + local->stbuf.ia_size = local->stbuf_size; + local->stbuf.ia_blocks = local->stbuf_blocks; + } + STRIPE_STACK_UNWIND (link, frame, local->op_ret, + local->op_errno, local->inode, + &local->stbuf, &local->preparent, + &local->postparent, NULL); + } +out: + return 0; +} - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning EIO"); - STACK_UNWIND (frame, -1, EIO); - return 0; - } - - if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode)) - send_fop_to_all = 1; - - if (!send_fop_to_all) { - STACK_WIND (frame, - stripe_common_cbk, - trav->xlator, - trav->xlator->fops->unlink, - loc); - } else { - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_cbk, - trav->xlator, - trav->xlator->fops->unlink, - loc); - trav = trav->next; - } - } +int32_t +stripe_link (call_frame_t *frame, xlator_t *this, loc_t *oldloc, loc_t *newloc, dict_t *xdata) +{ + xlator_list_t *trav = NULL; + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + int32_t op_errno = 1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (oldloc, err); + VALIDATE_OR_GOTO (oldloc->path, err); + VALIDATE_OR_GOTO (oldloc->inode, err); + + priv = this->private; + trav = this->children; + + /* If any one node is down, don't allow link operation */ + if (priv->nodes_down) { + op_errno = ENOTCONN; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + local->call_count = priv->child_count; + + /* Everytime in stripe lookup, all child + nodes should be looked up */ + while (trav) { + STACK_WIND (frame, stripe_link_cbk, + trav->xlator, trav->xlator->fops->link, + oldloc, newloc, NULL); + trav = trav->next; + } + + return 0; +err: + STRIPE_STACK_UNWIND (link, frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL); + return 0; +} - return 0; +int32_t +stripe_create_fail_unlink_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, + int32_t op_errno, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + + if (!this || !frame || !frame->local) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + } + UNLOCK (&frame->lock); + + if (!callcnt) { + STRIPE_STACK_UNWIND (create, frame, local->op_ret, local->op_errno, + local->fd, local->inode, &local->stbuf, + &local->preparent, &local->postparent, NULL); + } +out: + return 0; } -int32_t -stripe_first_rmdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) +int32_t +stripe_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, fd_t *fd, + inode_t *inode, struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) { - xlator_list_t *trav = this->children; - stripe_local_t *local = frame->local; + int32_t callcnt = 0; + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + call_frame_t *prev = NULL; + xlator_list_t *trav = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + priv = this->private; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->failed = 1; + local->op_errno = op_errno; + } + + if (op_ret >= 0) { + if (IA_ISREG(buf->ia_type)) { + if (stripe_ctx_handle(this, prev, local, xdata)) + gf_log(this->name, GF_LOG_ERROR, + "Error getting fctx info from " + "dict"); + } - if (op_ret == -1) - { - STACK_UNWIND (frame, op_ret, op_errno); - return 0; - } + local->op_ret = op_ret; + + local->stbuf_blocks += buf->ia_blocks; + local->preparent_blocks += preparent->ia_blocks; + local->postparent_blocks += postparent->ia_blocks; + + correct_file_size(buf, local->fctx, prev); + + if (local->stbuf_size < buf->ia_size) + local->stbuf_size = buf->ia_size; + if (local->preparent_size < preparent->ia_size) + local->preparent_size = preparent->ia_size; + if (local->postparent_size < postparent->ia_size) + local->postparent_size = postparent->ia_size; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + if (local->op_ret == -1) { + local->call_count = priv->child_count; + trav = this->children; + while (trav) { + STACK_WIND (frame, + stripe_create_fail_unlink_cbk, + trav->xlator, + trav->xlator->fops->unlink, + &local->loc, 0, NULL); + trav = trav->next; + } + + return 0; + } + + if (local->op_ret >= 0) { + local->preparent.ia_blocks = local->preparent_blocks; + local->preparent.ia_size = local->preparent_size; + local->postparent.ia_blocks = local->postparent_blocks; + local->postparent.ia_size = local->postparent_size; + local->stbuf.ia_size = local->stbuf_size; + local->stbuf.ia_blocks = local->stbuf_blocks; + + stripe_copy_xl_array(local->fctx->xl_array, + priv->xl_array, + local->fctx->stripe_count); + inode_ctx_put(local->inode, this, + (uint64_t) local->fctx); + } + + /* Create itself has failed.. so return + without setxattring */ + STRIPE_STACK_UNWIND (create, frame, local->op_ret, + local->op_errno, local->fd, + local->inode, &local->stbuf, + &local->preparent, &local->postparent, NULL); + } + +out: + return 0; +} - local->call_count--; /* First child successful */ - trav = trav->next; /* Skip first child */ - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_cbk, - trav->xlator, - trav->xlator->fops->rmdir, - &local->loc); - trav = trav->next; - } - return 0; +int32_t +stripe_first_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, fd_t *fd, + inode_t *inode, struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + call_frame_t *prev = NULL; + xlator_list_t *trav = NULL; + int i = 1; + dict_t *dict = NULL; + loc_t *loc = NULL; + int32_t need_unref = 0; + int32_t ret = -1; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + priv = this->private; + local = frame->local; + trav = this->children; + loc = &local->loc; + + --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->failed = 1; + local->op_errno = op_errno; + } + + local->op_ret = 0; + /* Get the mapping in inode private */ + /* Get the stat buf right */ + local->stbuf = *buf; + local->preparent = *preparent; + local->postparent = *postparent; + + local->stbuf_blocks += buf->ia_blocks; + local->preparent_blocks += preparent->ia_blocks; + local->postparent_blocks += postparent->ia_blocks; + + if (local->stbuf_size < buf->ia_size) + local->stbuf_size = buf->ia_size; + if (local->preparent_size < preparent->ia_size) + local->preparent_size = preparent->ia_size; + if (local->postparent_size < postparent->ia_size) + local->postparent_size = postparent->ia_size; + + if (local->failed) + local->op_ret = -1; + + if (local->op_ret == -1) { + local->call_count = 1; + STACK_WIND (frame, stripe_create_fail_unlink_cbk, + FIRST_CHILD (this), FIRST_CHILD (this)->fops->unlink, + &local->loc, 0, NULL); + return 0; + } + + if (local->op_ret >= 0) { + local->preparent.ia_blocks = local->preparent_blocks; + local->preparent.ia_size = local->preparent_size; + local->postparent.ia_blocks = local->postparent_blocks; + local->postparent.ia_size = local->postparent_size; + local->stbuf.ia_size = local->stbuf_size; + local->stbuf.ia_blocks = local->stbuf_blocks; + } + + /* Send a setxattr request to nodes where the + files are created */ + trav = trav->next; + while (trav) { + if (priv->xattr_supported) { + dict = dict_new (); + if (!dict) { + gf_log (this->name, GF_LOG_ERROR, + "failed to allocate dict %s", loc->path); + } + need_unref = 1; + + dict_copy (local->xattr, dict); + + ret = stripe_xattr_request_build (this, dict, + local->stripe_size, + priv->child_count, + i, priv->coalesce); + if (ret) + gf_log (this->name, GF_LOG_ERROR, + "failed to build xattr request"); + } else { + dict = local->xattr; + } + + STACK_WIND (frame, stripe_create_cbk, trav->xlator, + trav->xlator->fops->create, &local->loc, + local->flags, local->mode, local->umask, local->fd, + dict); + trav = trav->next; + if (need_unref && dict) + dict_unref (dict); + i++; + } + +out: + return 0; } + + /** - * stripe_rmdir - + * stripe_create - If a block-size is specified for the 'name', create the + * file in all the child nodes. If not, create it in only first child. + * + * @name- complete path of the file to be created. */ int32_t -stripe_rmdir (call_frame_t *frame, - xlator_t *this, - loc_t *loc) +stripe_create (call_frame_t *frame, xlator_t *this, loc_t *loc, + int32_t flags, mode_t mode, mode_t umask, fd_t *fd, dict_t *xdata) { - stripe_local_t *local = NULL; - xlator_list_t *trav = this->children; - stripe_private_t *priv = this->private; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning EIO"); - STACK_UNWIND (frame, -1, EIO); - return 0; - } - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->inode = loc->inode; - loc_copy (&local->loc, loc); - local->call_count = priv->child_count; - - STACK_WIND (frame, - stripe_first_rmdir_cbk, - trav->xlator, - trav->xlator->fops->rmdir, - loc); + stripe_private_t *priv = NULL; + stripe_local_t *local = NULL; + int32_t op_errno = EINVAL; + int ret = 0; + int need_unref = 0; + int i = 0; + dict_t *dict = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + + /* files created in O_APPEND mode does not allow lseek() on fd */ + flags &= ~O_APPEND; + + if (priv->first_child_down || priv->nodes_down) { + gf_log (this->name, GF_LOG_DEBUG, + "First node down, returning EIO"); + op_errno = EIO; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + local->op_errno = ENOTCONN; + local->stripe_size = stripe_get_matching_bs (loc->path, priv); + frame->local = local; + local->inode = inode_ref (loc->inode); + loc_copy (&local->loc, loc); + local->fd = fd_ref (fd); + local->flags = flags; + local->mode = mode; + local->umask = umask; + if (xdata) + local->xattr = dict_ref (xdata); + + local->call_count = priv->child_count; + /* Send a setxattr request to nodes where the + files are created */ + + if (priv->xattr_supported) { + dict = dict_new (); + if (!dict) { + gf_log (this->name, GF_LOG_ERROR, + "failed to allocate dict %s", loc->path); + } + need_unref = 1; + + dict_copy (xdata, dict); + + ret = stripe_xattr_request_build (this, dict, + local->stripe_size, + priv->child_count, + i, priv->coalesce); + if (ret) + gf_log (this->name, GF_LOG_ERROR, + "failed to build xattr request"); + } else { + dict = xdata; + } + + + STACK_WIND (frame, stripe_first_create_cbk, FIRST_CHILD (this), + FIRST_CHILD (this)->fops->create, loc, flags, mode, + umask, fd, dict); + + if (need_unref && dict) + dict_unref (dict); + + + return 0; +err: + STRIPE_STACK_UNWIND (create, frame, -1, op_errno, NULL, NULL, NULL, + NULL, NULL, xdata); + return 0; +} - return 0; +int32_t +stripe_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, fd_t *fd, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + local->op_errno = op_errno; + } + + if (op_ret >= 0) + local->op_ret = op_ret; + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + STRIPE_STACK_UNWIND (open, frame, local->op_ret, + local->op_errno, local->fd, xdata); + } +out: + return 0; } /** - * stripe_setxattr - + * stripe_open - */ int32_t -stripe_setxattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - dict_t *dict, - int32_t flags) +stripe_open (call_frame_t *frame, xlator_t *this, loc_t *loc, + int32_t flags, fd_t *fd, dict_t *xdata) { - stripe_private_t *priv = this->private; + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + xlator_list_t *trav = NULL; + int32_t op_errno = 1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + trav = this->children; + + if (priv->first_child_down) { + op_errno = ENOTCONN; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + /* files opened in O_APPEND mode does not allow lseek() on fd */ + flags &= ~O_APPEND; + + local->fd = fd_ref (fd); + frame->local = local; + loc_copy (&local->loc, loc); + + /* Striped files */ + local->flags = flags; + local->call_count = priv->child_count; + local->stripe_size = stripe_get_matching_bs (loc->path, priv); + + while (trav) { + STACK_WIND (frame, stripe_open_cbk, trav->xlator, + trav->xlator->fops->open, + &local->loc, local->flags, local->fd, + xdata); + trav = trav->next; + } + return 0; +err: + STRIPE_STACK_UNWIND (open, frame, -1, op_errno, NULL, NULL); + return 0; +} - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning ENOTCONN"); - STACK_UNWIND (frame, -1, ENOTCONN); - return 0; - } +int32_t +stripe_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, fd_t *fd, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_ret = -1; + local->op_errno = op_errno; + } + + if (op_ret >= 0) + local->op_ret = op_ret; + } + UNLOCK (&frame->lock); + + if (!callcnt) { + STRIPE_STACK_UNWIND (opendir, frame, local->op_ret, + local->op_errno, local->fd, NULL); + } +out: + return 0; +} - STACK_WIND (frame, - stripe_common_cbk, - FIRST_CHILD(this), - FIRST_CHILD(this)->fops->setxattr, - loc, dict, flags); - return 0; +int32_t +stripe_opendir (call_frame_t *frame, xlator_t *this, loc_t *loc, fd_t *fd, dict_t *xdata) +{ + xlator_list_t *trav = NULL; + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + int32_t op_errno = EINVAL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + trav = this->children; + + if (priv->first_child_down) { + op_errno = ENOTCONN; + goto err; + } + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + frame->local = local; + local->call_count = priv->child_count; + local->fd = fd_ref (fd); + + while (trav) { + STACK_WIND (frame, stripe_opendir_cbk, trav->xlator, + trav->xlator->fops->opendir, loc, fd, NULL); + trav = trav->next; + } + + return 0; +err: + STRIPE_STACK_UNWIND (opendir, frame, -1, op_errno, NULL, NULL); + return 0; } +int32_t +stripe_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct gf_flock *lock, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + } + if (op_ret >= 0) { + if (FIRST_CHILD(this) == prev->this) { + /* First successful call, copy the *lock */ + local->op_ret = op_ret; + local->lock = *lock; + } + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + STRIPE_STACK_UNWIND (lk, frame, local->op_ret, + local->op_errno, &local->lock, NULL); + } +out: + return 0; +} -int32_t -stripe_mknod_ifreg_fail_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) +int32_t +stripe_lk (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t cmd, + struct gf_flock *lock, dict_t *xdata) { - int32_t callcnt = 0; - stripe_local_t *local = frame->local; + stripe_local_t *local = NULL; + xlator_list_t *trav = NULL; + stripe_private_t *priv = NULL; + int32_t op_errno = EINVAL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + trav = this->children; + priv = this->private; + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + local->call_count = priv->child_count; + + while (trav) { + STACK_WIND (frame, stripe_lk_cbk, trav->xlator, + trav->xlator->fops->lk, fd, cmd, lock, NULL); + trav = trav->next; + } + + return 0; +err: + STRIPE_STACK_UNWIND (lk, frame, -1, op_errno, NULL, NULL); + return 0; +} - LOCK (&frame->lock); - { - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - if (!callcnt) { - loc_wipe (&local->loc); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->inode, &local->stbuf); - } +int32_t +stripe_flush_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + } + if (op_ret >= 0) + local->op_ret = op_ret; + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + STRIPE_STACK_UNWIND (flush, frame, local->op_ret, + local->op_errno, NULL); + } +out: + return 0; +} - return 0; +int32_t +stripe_flush (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata) +{ + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + xlator_list_t *trav = NULL; + int32_t op_errno = 1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + priv = this->private; + trav = this->children; + + if (priv->first_child_down) { + op_errno = ENOTCONN; + goto err; + } + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + local->call_count = priv->child_count; + + while (trav) { + STACK_WIND (frame, stripe_flush_cbk, trav->xlator, + trav->xlator->fops->flush, fd, NULL); + trav = trav->next; + } + + return 0; +err: + STRIPE_STACK_UNWIND (flush, frame, -1, op_errno, NULL); + return 0; } -/** - */ + int32_t -stripe_mknod_ifreg_setxattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) +stripe_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) { - int32_t callcnt = 0; - stripe_local_t *local = frame->local; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + } + if (op_ret >= 0) { + local->op_ret = op_ret; + if (FIRST_CHILD(this) == prev->this) { + local->pre_buf = *prebuf; + local->post_buf = *postbuf; + } + local->prebuf_blocks += prebuf->ia_blocks; + local->postbuf_blocks += postbuf->ia_blocks; + + correct_file_size(prebuf, local->fctx, prev); + correct_file_size(postbuf, local->fctx, prev); + + if (local->prebuf_size < prebuf->ia_size) + local->prebuf_size = prebuf->ia_size; + + if (local->postbuf_size < postbuf->ia_size) + local->postbuf_size = postbuf->ia_size; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + if (local->op_ret != -1) { + local->pre_buf.ia_blocks = local->prebuf_blocks; + local->pre_buf.ia_size = local->prebuf_size; + local->post_buf.ia_blocks = local->postbuf_blocks; + local->post_buf.ia_size = local->postbuf_size; + } + + STRIPE_STACK_UNWIND (fsync, frame, local->op_ret, + local->op_errno, &local->pre_buf, + &local->post_buf, NULL); + } +out: + return 0; +} - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->op_ret = -1; - local->op_errno = op_errno; - } +int32_t +stripe_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags, dict_t *xdata) +{ + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + xlator_list_t *trav = NULL; + stripe_fd_ctx_t *fctx = NULL; + int32_t op_errno = 1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + priv = this->private; + trav = this->children; + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + inode_ctx_get(fd->inode, this, (uint64_t *) &fctx); + if (!fctx) { + op_errno = EINVAL; + goto err; } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->op_ret == -1) { - local->call_count = priv->child_count; - while (trav) { - STACK_WIND (frame, - stripe_mknod_ifreg_fail_unlink_cbk, - trav->xlator, - trav->xlator->fops->unlink, - &local->loc); - trav = trav->next; - } - return 0; - } + local->fctx = fctx; + + local->op_ret = -1; + frame->local = local; + local->call_count = priv->child_count; + + while (trav) { + STACK_WIND (frame, stripe_fsync_cbk, trav->xlator, + trav->xlator->fops->fsync, fd, flags, NULL); + trav = trav->next; + } + + return 0; +err: + STRIPE_STACK_UNWIND (fsync, frame, -1, op_errno, NULL, NULL, NULL); + return 0; +} - loc_wipe (&local->loc); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->inode, &local->stbuf); - } - return 0; +int32_t +stripe_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *buf, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + } + + if (op_ret == 0) { + local->op_ret = 0; + + if (FIRST_CHILD(this) == prev->this) + local->stbuf = *buf; + + local->stbuf_blocks += buf->ia_blocks; + + correct_file_size(buf, local->fctx, prev); + + if (local->stbuf_size < buf->ia_size) + local->stbuf_size = buf->ia_size; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + if (local->op_ret != -1) { + local->stbuf.ia_size = local->stbuf_size; + local->stbuf.ia_blocks = local->stbuf_blocks; + } + + STRIPE_STACK_UNWIND (fstat, frame, local->op_ret, + local->op_errno, &local->stbuf, NULL); + } + +out: + return 0; } -/** - */ int32_t -stripe_mknod_ifreg_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf) +stripe_fstat (call_frame_t *frame, + xlator_t *this, + fd_t *fd, dict_t *xdata) { - int ret = 0; - int32_t callcnt = 0; - stripe_local_t *local = frame->local; - stripe_private_t *priv = this->private; + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + xlator_list_t *trav = NULL; + stripe_fd_ctx_t *fctx = NULL; + int32_t op_errno = 1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + priv = this->private; + trav = this->children; + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + local->call_count = priv->child_count; + + if (IA_ISREG(fd->inode->ia_type)) { + inode_ctx_get(fd->inode, this, (uint64_t *) &fctx); + if (!fctx) + goto err; + local->fctx = fctx; + } - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->failed = 1; - local->op_errno = op_errno; - } - - if (op_ret >= 0) { - local->op_ret = op_ret; - /* Get the mapping in inode private */ - /* Get the stat buf right */ - if (local->stbuf.st_blksize == 0) { - local->stbuf = *buf; - /* Because st_blocks gets added again */ - local->stbuf.st_blocks = 0; - } + while (trav) { + STACK_WIND (frame, stripe_fstat_cbk, trav->xlator, + trav->xlator->fops->fstat, fd, NULL); + trav = trav->next; + } - /* Always, pass the inode number of first child - to the above layer */ - if (FIRST_CHILD(this) == - ((call_frame_t *)cookie)->this) - local->stbuf.st_ino = buf->st_ino; - - local->stbuf.st_blocks += buf->st_blocks; - if (local->stbuf.st_size < buf->st_size) - local->stbuf.st_size = buf->st_size; - if (local->stbuf.st_blksize != buf->st_blksize) { - /* TODO: add to blocks in terms of - original block size */ - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->failed) - local->op_ret = -1; - - if ((local->op_ret != -1) && priv->xattr_supported) { - /* Send a setxattr request to nodes where the - files are created */ - int32_t index = 0; - char size_key[256] = {0,}; - char index_key[256] = {0,}; - char count_key[256] = {0,}; - xlator_list_t *trav = this->children; - dict_t *dict = NULL; - - sprintf (size_key, - "trusted.%s.stripe-size", this->name); - sprintf (count_key, - "trusted.%s.stripe-count", this->name); - sprintf (index_key, - "trusted.%s.stripe-index", this->name); - - local->call_count = priv->child_count; - - while (trav) { - dict = get_new_dict (); - dict_ref (dict); - /* TODO: check return value */ - ret = dict_set_int64 (dict, size_key, - local->stripe_size); - ret = dict_set_int32 (dict, count_key, - local->call_count); - ret = dict_set_int32 (dict, index_key, index); - - STACK_WIND (frame, - stripe_mknod_ifreg_setxattr_cbk, - trav->xlator, - trav->xlator->fops->setxattr, - &local->loc, dict, 0); - - dict_unref (dict); - index++; - trav = trav->next; - } - } else { - /* Create itself has failed.. so return - without setxattring */ - loc_wipe (&local->loc); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->inode, &local->stbuf); - } - } - - return 0; + return 0; +err: + STRIPE_STACK_UNWIND (fstat, frame, -1, op_errno, NULL, NULL); + return 0; } -/** - * stripe_mknod - - */ int32_t -stripe_mknod (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode, - dev_t rdev) -{ - stripe_private_t *priv = this->private; - stripe_local_t *local = NULL; - xlator_list_t *trav = NULL; - - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning EIO"); - STACK_UNWIND (frame, -1, EIO, NULL, NULL); - return 0; +stripe_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, dict_t *xdata) +{ + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + stripe_fd_ctx_t *fctx = NULL; + int i, eof_idx; + off_t dest_offset, tmp_offset; + int32_t op_errno = 1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + priv = this->private; + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + local->call_count = priv->child_count; + + inode_ctx_get(fd->inode, this, (uint64_t *) &fctx); + if (!fctx) { + gf_log(this->name, GF_LOG_ERROR, "no stripe context"); + op_errno = EINVAL; + goto err; + } + if (!fctx->stripe_count) { + gf_log(this->name, GF_LOG_ERROR, "no stripe count"); + op_errno = EINVAL; + goto err; } - if (S_ISREG(mode)) { - /* NOTE: on older kernels (older than 2.6.9), - creat() fops is sent as mknod() + open(). Hence handling - S_IFREG files is necessary */ - if (priv->nodes_down) { - gf_log (this->name, GF_LOG_WARNING, - "Some node down, returning EIO"); - STACK_UNWIND (frame, -1, EIO, loc->inode, NULL); - return 0; + local->fctx = fctx; + eof_idx = (offset / fctx->stripe_size) % fctx->stripe_count; + + for (i = 0; i < fctx->stripe_count; i++) { + if (!fctx->xl_array[i]) { + gf_log(this->name, GF_LOG_ERROR, "no xlator at index " + "%d", i); + op_errno = EINVAL; + goto err; } - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - local->op_errno = ENOTCONN; - local->stripe_size = stripe_get_matching_bs (loc->path, - priv->pattern, - priv->block_size); - frame->local = local; - local->inode = loc->inode; - loc_copy (&local->loc, loc); - - /* Everytime in stripe lookup, all child nodes should - be looked up */ - local->call_count = - ((stripe_private_t *)this->private)->child_count; - - trav = this->children; - while (trav) { - STACK_WIND (frame, - stripe_mknod_ifreg_cbk, - trav->xlator, - trav->xlator->fops->mknod, - loc, mode, rdev); - trav = trav->next; + + if (fctx->stripe_coalesce) { + if (i < eof_idx) + tmp_offset = roof(offset, fctx->stripe_size * + fctx->stripe_count); + else if (i > eof_idx) + tmp_offset = floor(offset, fctx->stripe_size * + fctx->stripe_count); + else + tmp_offset = offset; + + dest_offset = coalesced_offset(tmp_offset, + fctx->stripe_size, fctx->stripe_count); + } else { + dest_offset = offset; } - /* This case is handled, no need to continue further. */ - return 0; + STACK_WIND(frame, stripe_truncate_cbk, fctx->xl_array[i], + fctx->xl_array[i]->fops->ftruncate, fd, dest_offset, + NULL); } + return 0; +err: + STRIPE_STACK_UNWIND (ftruncate, frame, -1, op_errno, NULL, NULL, NULL); + return 0; +} - STACK_WIND (frame, - stripe_common_inode_cbk, - FIRST_CHILD(this), - FIRST_CHILD(this)->fops->mknod, - loc, mode, rdev); - return 0; +int32_t +stripe_fsyncdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_DEBUG, + "%s returned %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + if ((op_errno != ENOENT) || + (prev->this == FIRST_CHILD (this))) + local->failed = 1; + } + if (op_ret >= 0) + local->op_ret = op_ret; + } + UNLOCK (&frame->lock); + + if (!callcnt) { + if (local->failed) + local->op_ret = -1; + + STRIPE_STACK_UNWIND (fsyncdir, frame, local->op_ret, + local->op_errno, NULL); + } +out: + return 0; } - -/** - * stripe_mkdir - - */ int32_t -stripe_mkdir (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode) -{ - stripe_private_t *priv = this->private; - stripe_local_t *local = NULL; - xlator_list_t *trav = NULL; - - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning EIO"); - STACK_UNWIND (frame, -1, EIO, NULL, NULL); - return 0; - } +stripe_fsyncdir (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags, dict_t *xdata) +{ + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + xlator_list_t *trav = NULL; + int32_t op_errno = 1; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + priv = this->private; + trav = this->children; + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + local->call_count = priv->child_count; + + while (trav) { + STACK_WIND (frame, stripe_fsyncdir_cbk, trav->xlator, + trav->xlator->fops->fsyncdir, fd, flags, NULL); + trav = trav->next; + } + + return 0; +err: + STRIPE_STACK_UNWIND (fsyncdir, frame, -1, op_errno, NULL); + return 0; +} - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - local->call_count = priv->child_count; - frame->local = local; - - /* Everytime in stripe lookup, all child nodes should be looked up */ - trav = this->children; - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_inode_cbk, - trav->xlator, - trav->xlator->fops->mkdir, - loc, mode); - trav = trav->next; - } - return 0; +int32_t +stripe_readv_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *buf, dict_t *xdata) +{ + int32_t i = 0; + int32_t callcnt = 0; + int32_t count = 0; + stripe_local_t *local = NULL; + struct iovec *vec = NULL; + struct iatt tmp_stbuf = {0,}; + struct iobref *tmp_iobref = NULL; + struct iobuf *iobuf = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + local = frame->local; + prev = cookie; + + LOCK (&frame->lock); + { + callcnt = --local->call_count; + if (op_ret != -1) { + correct_file_size(buf, local->fctx, prev); + if (local->stbuf_size < buf->ia_size) + local->stbuf_size = buf->ia_size; + } + } + UNLOCK (&frame->lock); + + if (!callcnt) { + op_ret = 0; + + /* Keep extra space for filling in '\0's */ + vec = GF_CALLOC ((local->count * 2), sizeof (struct iovec), + gf_stripe_mt_iovec); + if (!vec) { + op_ret = -1; + goto done; + } + + for (i = 0; i < local->wind_count; i++) { + if (local->replies[i].op_ret) { + memcpy ((vec + count), local->replies[i].vector, + (local->replies[i].count * sizeof (struct iovec))); + count += local->replies[i].count; + op_ret += local->replies[i].op_ret; + } + if ((local->replies[i].op_ret < + local->replies[i].requested_size) && + (local->stbuf_size > (local->offset + op_ret))) { + /* Fill in 0s here */ + vec[count].iov_len = + (local->replies[i].requested_size - + local->replies[i].op_ret); + iobuf = iobuf_get2 (this->ctx->iobuf_pool, + vec[count].iov_len); + if (!iobuf) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory."); + op_ret = -1; + op_errno = ENOMEM; + goto done; + } + memset (iobuf->ptr, 0, vec[count].iov_len); + vec[count].iov_base = iobuf->ptr; + + iobref_add (local->iobref, iobuf); + iobuf_unref(iobuf); + + op_ret += vec[count].iov_len; + count++; + } + GF_FREE (local->replies[i].vector); + } + + /* FIXME: notice that st_ino, and st_dev (gen) will be + * different than what inode will have. Make sure this doesn't + * cause any bugs at higher levels */ + memcpy (&tmp_stbuf, &local->replies[0].stbuf, + sizeof (struct iatt)); + tmp_stbuf.ia_size = local->stbuf_size; + + done: + GF_FREE (local->replies); + tmp_iobref = local->iobref; + STRIPE_STACK_UNWIND (readv, frame, op_ret, op_errno, vec, + count, &tmp_stbuf, tmp_iobref, NULL); + + iobref_unref (tmp_iobref); + GF_FREE (vec); + } +out: + return 0; } - /** - * stripe_symlink - + * stripe_readv_cbk - get all the striped reads, and order it properly, send it + * to above layer after putting it in a single vector. */ int32_t -stripe_symlink (call_frame_t *frame, - xlator_t *this, - const char *linkpath, - loc_t *loc) -{ - stripe_private_t *priv = this->private; - - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning EIO"); - STACK_UNWIND (frame, -1, EIO, NULL, NULL); - return 0; - } +stripe_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iovec *vector, + int32_t count, struct iatt *stbuf, struct iobref *iobref, dict_t *xdata) +{ + int32_t index = 0; + int32_t callcnt = 0; + int32_t final_count = 0; + int32_t need_to_check_proper_size = 0; + call_frame_t *mframe = NULL; + stripe_local_t *mlocal = NULL; + stripe_local_t *local = NULL; + struct iovec *final_vec = NULL; + struct iatt tmp_stbuf = {0,}; + struct iatt *tmp_stbuf_p = NULL; //need it for a warning + struct iobref *tmp_iobref = NULL; + stripe_fd_ctx_t *fctx = NULL; + call_frame_t *prev = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto end; + } + + local = frame->local; + index = local->node_index; + prev = cookie; + mframe = local->orig_frame; + if (!mframe) + goto out; + + mlocal = mframe->local; + if (!mlocal) + goto out; + + fctx = mlocal->fctx; + + LOCK (&mframe->lock); + { + mlocal->replies[index].op_ret = op_ret; + mlocal->replies[index].op_errno = op_errno; + mlocal->replies[index].requested_size = local->readv_size; + if (op_ret >= 0) { + mlocal->replies[index].stbuf = *stbuf; + mlocal->replies[index].count = count; + mlocal->replies[index].vector = iov_dup (vector, count); + + correct_file_size(stbuf, fctx, prev); + + if (local->stbuf_size < stbuf->ia_size) + local->stbuf_size = stbuf->ia_size; + local->stbuf_blocks += stbuf->ia_blocks; + + if (!mlocal->iobref) + mlocal->iobref = iobref_new (); + iobref_merge (mlocal->iobref, iobref); + } + callcnt = ++mlocal->call_count; + } + UNLOCK(&mframe->lock); + + if (callcnt == mlocal->wind_count) { + op_ret = 0; + + for (index=0; index < mlocal->wind_count; index++) { + /* check whether each stripe returned + * 'expected' number of bytes */ + if (mlocal->replies[index].op_ret == -1) { + op_ret = -1; + op_errno = mlocal->replies[index].op_errno; + break; + } + /* TODO: handle the 'holes' within the read range + properly */ + if (mlocal->replies[index].op_ret < + mlocal->replies[index].requested_size) { + need_to_check_proper_size = 1; + } + + op_ret += mlocal->replies[index].op_ret; + mlocal->count += mlocal->replies[index].count; + } + if (op_ret == -1) + goto done; + if (need_to_check_proper_size) + goto check_size; + + final_vec = GF_CALLOC (mlocal->count, sizeof (struct iovec), + gf_stripe_mt_iovec); + + if (!final_vec) { + op_ret = -1; + goto done; + } + + for (index = 0; index < mlocal->wind_count; index++) { + memcpy ((final_vec + final_count), + mlocal->replies[index].vector, + (mlocal->replies[index].count * + sizeof (struct iovec))); + final_count += mlocal->replies[index].count; + GF_FREE (mlocal->replies[index].vector); + } + + /* FIXME: notice that st_ino, and st_dev (gen) will be + * different than what inode will have. Make sure this doesn't + * cause any bugs at higher levels */ + memcpy (&tmp_stbuf, &mlocal->replies[0].stbuf, + sizeof (struct iatt)); + tmp_stbuf.ia_size = local->stbuf_size; + tmp_stbuf.ia_blocks = local->stbuf_blocks; + + done: + /* */ + GF_FREE (mlocal->replies); + tmp_iobref = mlocal->iobref; + /* work around for nfs truncated read. Bug 3774 */ + tmp_stbuf_p = &tmp_stbuf; + WIPE (tmp_stbuf_p); + STRIPE_STACK_UNWIND (readv, mframe, op_ret, op_errno, final_vec, + final_count, &tmp_stbuf, tmp_iobref, NULL); + + iobref_unref (tmp_iobref); + GF_FREE (final_vec); + } + + goto out; + +check_size: + mlocal->call_count = fctx->stripe_count; + + for (index = 0; index < fctx->stripe_count; index++) { + STACK_WIND (mframe, stripe_readv_fstat_cbk, + (fctx->xl_array[index]), + (fctx->xl_array[index])->fops->fstat, + mlocal->fd, NULL); + } + +out: + STRIPE_STACK_DESTROY (frame); +end: + return 0; +} - /* send symlink to only first node */ - STACK_WIND (frame, - stripe_common_inode_cbk, - FIRST_CHILD(this), - FIRST_CHILD(this)->fops->symlink, - linkpath, loc); - return 0; +int32_t +stripe_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, + size_t size, off_t offset, uint32_t flags, dict_t *xdata) +{ + int32_t op_errno = EINVAL; + int32_t idx = 0; + int32_t index = 0; + int32_t num_stripe = 0; + int32_t off_index = 0; + size_t frame_size = 0; + off_t rounded_end = 0; + uint64_t tmp_fctx = 0; + uint64_t stripe_size = 0; + off_t rounded_start = 0; + off_t frame_offset = offset; + off_t dest_offset = 0; + stripe_local_t *local = NULL; + call_frame_t *rframe = NULL; + stripe_local_t *rlocal = NULL; + stripe_fd_ctx_t *fctx = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + inode_ctx_get (fd->inode, this, &tmp_fctx); + if (!tmp_fctx) { + op_errno = EBADFD; + goto err; + } + fctx = (stripe_fd_ctx_t *)(long)tmp_fctx; + stripe_size = fctx->stripe_size; + + STRIPE_VALIDATE_FCTX (fctx, err); + + if (!stripe_size) { + gf_log (this->name, GF_LOG_DEBUG, + "Wrong stripe size for the file"); + goto err; + } + /* The file is stripe across the child nodes. Send the read request + * to the child nodes appropriately after checking which region of + * the file is in which child node. Always '0-<stripe_size>' part of + * the file resides in the first child. + */ + rounded_start = floor (offset, stripe_size); + rounded_end = roof (offset+size, stripe_size); + num_stripe = (rounded_end- rounded_start)/stripe_size; + + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + frame->local = local; + + /* This is where all the vectors should be copied. */ + local->replies = GF_CALLOC (num_stripe, sizeof (struct stripe_replies), + gf_stripe_mt_stripe_replies); + if (!local->replies) { + op_errno = ENOMEM; + goto err; + } + + off_index = (offset / stripe_size) % fctx->stripe_count; + local->wind_count = num_stripe; + local->readv_size = size; + local->offset = offset; + local->fd = fd_ref (fd); + local->fctx = fctx; + + for (index = off_index; index < (num_stripe + off_index); index++) { + rframe = copy_frame (frame); + rlocal = mem_get0 (this->local_pool); + if (!rlocal) { + op_errno = ENOMEM; + goto err; + } + + frame_size = min (roof (frame_offset+1, stripe_size), + (offset + size)) - frame_offset; + + rlocal->node_index = index - off_index; + rlocal->orig_frame = frame; + rlocal->readv_size = frame_size; + rframe->local = rlocal; + idx = (index % fctx->stripe_count); + + if (fctx->stripe_coalesce) + dest_offset = coalesced_offset(frame_offset, + stripe_size, fctx->stripe_count); + else + dest_offset = frame_offset; + + STACK_WIND (rframe, stripe_readv_cbk, fctx->xl_array[idx], + fctx->xl_array[idx]->fops->readv, + fd, frame_size, dest_offset, flags, xdata); + + frame_offset += frame_size; + } + + return 0; +err: + if (rframe) + STRIPE_STACK_DESTROY (rframe); + + STRIPE_STACK_UNWIND (readv, frame, -1, op_errno, NULL, 0, NULL, NULL, NULL); + return 0; } -/** - * stripe_link - - */ + int32_t -stripe_link (call_frame_t *frame, - xlator_t *this, - loc_t *oldloc, - loc_t *newloc) -{ - int send_fop_to_all = 0; - stripe_private_t *priv = this->private; - stripe_local_t *local = NULL; - xlator_list_t *trav = this->children; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (oldloc); - - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning EIO"); - STACK_UNWIND (frame, -1, EIO, NULL, NULL); - return 0; - } +stripe_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + stripe_local_t *mlocal = NULL; + call_frame_t *prev = NULL; + call_frame_t *mframe = NULL; + struct stripe_replies *reply = NULL; + int32_t i = 0; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + mframe = local->orig_frame; + mlocal = mframe->local; + + LOCK(&frame->lock); + { + callcnt = ++mlocal->call_count; + + mlocal->replies[local->node_index].op_ret = op_ret; + mlocal->replies[local->node_index].op_errno = op_errno; + + if (op_ret >= 0) { + mlocal->post_buf = *postbuf; + mlocal->pre_buf = *prebuf; + + mlocal->prebuf_blocks += prebuf->ia_blocks; + mlocal->postbuf_blocks += postbuf->ia_blocks; + + correct_file_size(prebuf, mlocal->fctx, prev); + correct_file_size(postbuf, mlocal->fctx, prev); + + if (mlocal->prebuf_size < prebuf->ia_size) + mlocal->prebuf_size = prebuf->ia_size; + if (mlocal->postbuf_size < postbuf->ia_size) + mlocal->postbuf_size = postbuf->ia_size; + } + } + UNLOCK (&frame->lock); + + if ((callcnt == mlocal->wind_count) && mlocal->unwind) { + mlocal->pre_buf.ia_size = mlocal->prebuf_size; + mlocal->pre_buf.ia_blocks = mlocal->prebuf_blocks; + mlocal->post_buf.ia_size = mlocal->postbuf_size; + mlocal->post_buf.ia_blocks = mlocal->postbuf_blocks; + + /* + * Only return the number of consecutively written bytes up until + * the first error. Only return an error if it occurs first. + * + * When a short write occurs, the application should retry at the + * appropriate offset, at which point we'll potentially pass back + * the error. + */ + for (i = 0, reply = mlocal->replies; i < mlocal->wind_count; + i++, reply++) { + if (reply->op_ret == -1) { + gf_log(this->name, GF_LOG_DEBUG, "reply %d " + "returned error %s", i, + strerror(reply->op_errno)); + if (!mlocal->op_ret) { + mlocal->op_ret = -1; + mlocal->op_errno = reply->op_errno; + } + break; + } + mlocal->op_ret += reply->op_ret; - if (S_ISREG (oldloc->inode->st_mode)) - send_fop_to_all = 1; - - if (!send_fop_to_all) { - STACK_WIND (frame, - stripe_common_inode_cbk, - trav->xlator, - trav->xlator->fops->link, - oldloc, newloc); - } else { - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->call_count = priv->child_count; - - /* Everytime in stripe lookup, all child - nodes should be looked up */ - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_inode_cbk, - trav->xlator, - trav->xlator->fops->link, - oldloc, newloc); - trav = trav->next; + if (reply->op_ret < reply->requested_size) + break; } - } - return 0; + GF_FREE(mlocal->replies); + + STRIPE_STACK_UNWIND (writev, mframe, mlocal->op_ret, + mlocal->op_errno, &mlocal->pre_buf, + &mlocal->post_buf, NULL); + } +out: + STRIPE_STACK_DESTROY(frame); + return 0; } -int32_t -stripe_create_fail_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) +int32_t +stripe_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, + struct iovec *vector, int32_t count, off_t offset, + uint32_t flags, struct iobref *iobref, dict_t *xdata) { - int32_t callcnt = 0; - fd_t *lfd = NULL; - stripe_local_t *local = frame->local; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; + struct iovec *tmp_vec = NULL; + stripe_local_t *local = NULL; + stripe_fd_ctx_t *fctx = NULL; + int32_t op_errno = 1; + int32_t idx = 0; + int32_t total_size = 0; + int32_t offset_offset = 0; + int32_t remaining_size = 0; + int32_t tmp_count = count; + off_t fill_size = 0; + uint64_t stripe_size = 0; + uint64_t tmp_fctx = 0; + off_t dest_offset = 0; + off_t rounded_start = 0; + off_t rounded_end = 0; + int32_t total_chunks = 0; + call_frame_t *wframe = NULL; + stripe_local_t *wlocal = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + inode_ctx_get (fd->inode, this, &tmp_fctx); + if (!tmp_fctx) { + op_errno = EINVAL; + goto err; + } + fctx = (stripe_fd_ctx_t *)(long)tmp_fctx; + stripe_size = fctx->stripe_size; + + STRIPE_VALIDATE_FCTX (fctx, err); + + /* File has to be stripped across the child nodes */ + for (idx = 0; idx< count; idx ++) { + total_size += vector[idx].iov_len; + } + remaining_size = total_size; + + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + frame->local = local; + local->stripe_size = stripe_size; + local->fctx = fctx; + + if (!stripe_size) { + gf_log (this->name, GF_LOG_DEBUG, + "Wrong stripe size for the file"); + op_errno = EINVAL; + goto err; + } + + rounded_start = floor(offset, stripe_size); + rounded_end = roof(offset + total_size, stripe_size); + total_chunks = (rounded_end - rounded_start) / stripe_size; + local->replies = GF_CALLOC(total_chunks, sizeof(struct stripe_replies), + gf_stripe_mt_stripe_replies); + if (!local->replies) { + op_errno = ENOMEM; + goto err; } - UNLOCK (&frame->lock); - - if (!callcnt) { - lfd = local->fd; - loc_wipe (&local->loc); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->fd, local->inode, &local->stbuf); - fd_unref (lfd); - } - return 0; + + total_chunks = 0; + while (1) { + wframe = copy_frame(frame); + wlocal = mem_get0(this->local_pool); + if (!wlocal) { + op_errno = ENOMEM; + goto err; + } + wlocal->orig_frame = frame; + wframe->local = wlocal; + + /* Send striped chunk of the vector to child + nodes appropriately. */ + idx = (((offset + offset_offset) / + local->stripe_size) % fctx->stripe_count); + + fill_size = (local->stripe_size - + ((offset + offset_offset) % local->stripe_size)); + if (fill_size > remaining_size) + fill_size = remaining_size; + + remaining_size -= fill_size; + + tmp_count = iov_subset (vector, count, offset_offset, + offset_offset + fill_size, NULL); + tmp_vec = GF_CALLOC (tmp_count, sizeof (struct iovec), + gf_stripe_mt_iovec); + if (!tmp_vec) { + op_errno = ENOMEM; + goto err; + } + tmp_count = iov_subset (vector, count, offset_offset, + offset_offset + fill_size, tmp_vec); + + local->wind_count++; + if (remaining_size == 0) + local->unwind = 1; + + /* + * Store off the request index (with respect to the chunk of the + * initial offset) and the size of the request. This is required + * in the callback to calculate an appropriate return value in + * the event of a write failure in one or more requests. + */ + wlocal->node_index = total_chunks; + local->replies[total_chunks].requested_size = fill_size; + + dest_offset = offset + offset_offset; + if (fctx->stripe_coalesce) + dest_offset = coalesced_offset(dest_offset, + local->stripe_size, fctx->stripe_count); + + STACK_WIND (wframe, stripe_writev_cbk, fctx->xl_array[idx], + fctx->xl_array[idx]->fops->writev, fd, tmp_vec, + tmp_count, dest_offset, flags, iobref, + xdata); + + GF_FREE (tmp_vec); + offset_offset += fill_size; + total_chunks++; + if (remaining_size == 0) + break; + } + + return 0; +err: + if (wframe) + STRIPE_STACK_DESTROY(wframe); + + STRIPE_STACK_UNWIND (writev, frame, -1, op_errno, NULL, NULL, NULL); + return 0; } -/** - * stripe_create_setxattr_cbk - - */ int32_t -stripe_create_setxattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) +stripe_fallocate_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) { - fd_t *lfd = NULL; - int32_t callcnt = 0; - stripe_local_t *local = frame->local; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->op_ret = -1; - local->op_errno = op_errno; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->op_ret == -1) { - local->call_count = priv->child_count; - while (trav) { - STACK_WIND (frame, - stripe_create_fail_unlink_cbk, - trav->xlator, - trav->xlator->fops->unlink, - &local->loc); - trav = trav->next; - } - - return 0; + int32_t callcnt = 0; + stripe_local_t *local = NULL; + stripe_local_t *mlocal = NULL; + call_frame_t *prev = NULL; + call_frame_t *mframe = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + mframe = local->orig_frame; + mlocal = mframe->local; + + LOCK(&frame->lock); + { + callcnt = ++mlocal->call_count; + + if (op_ret == 0) { + mlocal->post_buf = *postbuf; + mlocal->pre_buf = *prebuf; + + mlocal->prebuf_blocks += prebuf->ia_blocks; + mlocal->postbuf_blocks += postbuf->ia_blocks; + + correct_file_size(prebuf, mlocal->fctx, prev); + correct_file_size(postbuf, mlocal->fctx, prev); + + if (mlocal->prebuf_size < prebuf->ia_size) + mlocal->prebuf_size = prebuf->ia_size; + if (mlocal->postbuf_size < postbuf->ia_size) + mlocal->postbuf_size = postbuf->ia_size; + } + + /* return the first failure */ + if (mlocal->op_ret == 0) { + mlocal->op_ret = op_ret; + mlocal->op_errno = op_errno; } - - lfd = local->fd; - loc_wipe (&local->loc); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->fd, local->inode, &local->stbuf); - fd_unref (lfd); - } - - return 0; + } + UNLOCK (&frame->lock); + + if ((callcnt == mlocal->wind_count) && mlocal->unwind) { + mlocal->pre_buf.ia_size = mlocal->prebuf_size; + mlocal->pre_buf.ia_blocks = mlocal->prebuf_blocks; + mlocal->post_buf.ia_size = mlocal->postbuf_size; + mlocal->post_buf.ia_blocks = mlocal->postbuf_blocks; + + STRIPE_STACK_UNWIND (fallocate, mframe, mlocal->op_ret, + mlocal->op_errno, &mlocal->pre_buf, + &mlocal->post_buf, NULL); + } +out: + STRIPE_STACK_DESTROY(frame); + return 0; } -/** - * stripe_create_cbk - - */ int32_t -stripe_create_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd, - inode_t *inode, - struct stat *buf) +stripe_fallocate(call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t mode, + off_t offset, size_t len, dict_t *xdata) { - int32_t callcnt = 0; - stripe_local_t *local = frame->local; - stripe_private_t *priv = this->private; - fd_t *lfd = NULL; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->failed = 1; - local->op_errno = op_errno; - } - - if (op_ret >= 0) { - local->op_ret = op_ret; - /* Get the mapping in inode private */ - /* Get the stat buf right */ - if (local->stbuf.st_blksize == 0) { - local->stbuf = *buf; - /* Because st_blocks gets added again */ - local->stbuf.st_blocks = 0; - } - - /* Always, pass the inode number of first - child to the above layer */ - if (FIRST_CHILD(this) == - ((call_frame_t *)cookie)->this) - local->stbuf.st_ino = buf->st_ino; - - local->stbuf.st_blocks += buf->st_blocks; - if (local->stbuf.st_size < buf->st_size) - local->stbuf.st_size = buf->st_size; - if (local->stbuf.st_blksize != buf->st_blksize) { - /* TODO: add to blocks in terms of - original block size */ - } + stripe_local_t *local = NULL; + stripe_fd_ctx_t *fctx = NULL; + int32_t op_errno = 1; + int32_t idx = 0; + int32_t offset_offset = 0; + int32_t remaining_size = 0; + off_t fill_size = 0; + uint64_t stripe_size = 0; + uint64_t tmp_fctx = 0; + off_t dest_offset = 0; + call_frame_t *fframe = NULL; + stripe_local_t *flocal = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + inode_ctx_get (fd->inode, this, &tmp_fctx); + if (!tmp_fctx) { + op_errno = EINVAL; + goto err; + } + fctx = (stripe_fd_ctx_t *)(long)tmp_fctx; + stripe_size = fctx->stripe_size; + + STRIPE_VALIDATE_FCTX (fctx, err); + + remaining_size = len; + + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + frame->local = local; + local->stripe_size = stripe_size; + local->fctx = fctx; + + if (!stripe_size) { + gf_log (this->name, GF_LOG_DEBUG, + "Wrong stripe size for the file"); + op_errno = EINVAL; + goto err; + } + + while (1) { + fframe = copy_frame(frame); + flocal = mem_get0(this->local_pool); + if (!flocal) { + op_errno = ENOMEM; + goto err; } - } - UNLOCK (&frame->lock); + flocal->orig_frame = frame; + fframe->local = flocal; + + /* send fallocate request to the associated child node */ + idx = (((offset + offset_offset) / + local->stripe_size) % fctx->stripe_count); + + fill_size = (local->stripe_size - + ((offset + offset_offset) % local->stripe_size)); + if (fill_size > remaining_size) + fill_size = remaining_size; + + remaining_size -= fill_size; + + local->wind_count++; + if (remaining_size == 0) + local->unwind = 1; + + dest_offset = offset + offset_offset; + if (fctx->stripe_coalesce) + dest_offset = coalesced_offset(dest_offset, + local->stripe_size, fctx->stripe_count); + + /* + * TODO: Create a separate handler for coalesce mode that sends a + * single fallocate per-child (since the ranges are linear). + */ + STACK_WIND(fframe, stripe_fallocate_cbk, fctx->xl_array[idx], + fctx->xl_array[idx]->fops->fallocate, fd, mode, + dest_offset, fill_size, xdata); + + offset_offset += fill_size; + if (remaining_size == 0) + break; + } + + return 0; +err: + if (fframe) + STRIPE_STACK_DESTROY(fframe); + + STRIPE_STACK_UNWIND (fallocate, frame, -1, op_errno, NULL, NULL, NULL); + return 0; +} - if (!callcnt) { - if (local->failed) - local->op_ret = -1; - if (local->op_ret >= 0) { - fd_ctx_set (local->fd, this, local->stripe_size); +int32_t +stripe_discard_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + stripe_local_t *mlocal = NULL; + call_frame_t *prev = NULL; + call_frame_t *mframe = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + mframe = local->orig_frame; + mlocal = mframe->local; + + LOCK(&frame->lock); + { + callcnt = ++mlocal->call_count; + + if (op_ret == 0) { + mlocal->post_buf = *postbuf; + mlocal->pre_buf = *prebuf; + + mlocal->prebuf_blocks += prebuf->ia_blocks; + mlocal->postbuf_blocks += postbuf->ia_blocks; + + correct_file_size(prebuf, mlocal->fctx, prev); + correct_file_size(postbuf, mlocal->fctx, prev); + + if (mlocal->prebuf_size < prebuf->ia_size) + mlocal->prebuf_size = prebuf->ia_size; + if (mlocal->postbuf_size < postbuf->ia_size) + mlocal->postbuf_size = postbuf->ia_size; + } + + /* return the first failure */ + if (mlocal->op_ret == 0) { + mlocal->op_ret = op_ret; + mlocal->op_errno = op_errno; } + } + UNLOCK (&frame->lock); + + if ((callcnt == mlocal->wind_count) && mlocal->unwind) { + mlocal->pre_buf.ia_size = mlocal->prebuf_size; + mlocal->pre_buf.ia_blocks = mlocal->prebuf_blocks; + mlocal->post_buf.ia_size = mlocal->postbuf_size; + mlocal->post_buf.ia_blocks = mlocal->postbuf_blocks; + + STRIPE_STACK_UNWIND (discard, mframe, mlocal->op_ret, + mlocal->op_errno, &mlocal->pre_buf, + &mlocal->post_buf, NULL); + } +out: + STRIPE_STACK_DESTROY(frame); + return 0; +} - if ((local->op_ret != -1) && - local->stripe_size && priv->xattr_supported) { - /* Send a setxattr request to nodes where - the files are created */ - int ret = 0; - int32_t index = 0; - char size_key[256] = {0,}; - char index_key[256] = {0,}; - char count_key[256] = {0,}; - xlator_list_t *trav = this->children; - dict_t *dict = NULL; - - sprintf (size_key, - "trusted.%s.stripe-size", this->name); - sprintf (count_key, - "trusted.%s.stripe-count", this->name); - sprintf (index_key, - "trusted.%s.stripe-index", this->name); - - local->call_count = priv->child_count; - - while (trav) { - dict = get_new_dict (); - dict_ref (dict); - - /* TODO: check return values */ - ret = dict_set_int64 (dict, size_key, - local->stripe_size); - ret = dict_set_int32 (dict, count_key, - local->call_count); - ret = dict_set_int32 (dict, index_key, index); - - STACK_WIND (frame, - stripe_create_setxattr_cbk, - trav->xlator, - trav->xlator->fops->setxattr, - &local->loc, - dict, - 0); - - dict_unref (dict); - index++; - trav = trav->next; - } - } else { - /* Create itself has failed.. so return - without setxattring */ - lfd = local->fd; - loc_wipe (&local->loc); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - local->fd, local->inode, &local->stbuf); - - fd_unref (lfd); +int32_t +stripe_discard(call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, + size_t len, dict_t *xdata) +{ + stripe_local_t *local = NULL; + stripe_fd_ctx_t *fctx = NULL; + int32_t op_errno = 1; + int32_t idx = 0; + int32_t offset_offset = 0; + int32_t remaining_size = 0; + off_t fill_size = 0; + uint64_t stripe_size = 0; + uint64_t tmp_fctx = 0; + off_t dest_offset = 0; + call_frame_t *fframe = NULL; + stripe_local_t *flocal = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + inode_ctx_get (fd->inode, this, &tmp_fctx); + if (!tmp_fctx) { + op_errno = EINVAL; + goto err; + } + fctx = (stripe_fd_ctx_t *)(long)tmp_fctx; + stripe_size = fctx->stripe_size; + + STRIPE_VALIDATE_FCTX (fctx, err); + + remaining_size = len; + + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + frame->local = local; + local->stripe_size = stripe_size; + local->fctx = fctx; + + if (!stripe_size) { + gf_log (this->name, GF_LOG_DEBUG, + "Wrong stripe size for the file"); + op_errno = EINVAL; + goto err; + } + + while (1) { + fframe = copy_frame(frame); + flocal = mem_get0(this->local_pool); + if (!flocal) { + op_errno = ENOMEM; + goto err; } - } - - return 0; + flocal->orig_frame = frame; + fframe->local = flocal; + + /* send discard request to the associated child node */ + idx = (((offset + offset_offset) / + local->stripe_size) % fctx->stripe_count); + + fill_size = (local->stripe_size - + ((offset + offset_offset) % local->stripe_size)); + if (fill_size > remaining_size) + fill_size = remaining_size; + + remaining_size -= fill_size; + + local->wind_count++; + if (remaining_size == 0) + local->unwind = 1; + + dest_offset = offset + offset_offset; + if (fctx->stripe_coalesce) + dest_offset = coalesced_offset(dest_offset, + local->stripe_size, fctx->stripe_count); + + /* + * TODO: Create a separate handler for coalesce mode that sends a + * single discard per-child (since the ranges are linear). + */ + STACK_WIND(fframe, stripe_discard_cbk, fctx->xl_array[idx], + fctx->xl_array[idx]->fops->discard, fd, dest_offset, + fill_size, xdata); + + offset_offset += fill_size; + if (remaining_size == 0) + break; + } + + return 0; +err: + if (fframe) + STRIPE_STACK_DESTROY(fframe); + + STRIPE_STACK_UNWIND (discard, frame, -1, op_errno, NULL, NULL, NULL); + return 0; } - -/** - * stripe_create - If a block-size is specified for the 'name', create the - * file in all the child nodes. If not, create it in only first child. - * - * @name- complete path of the file to be created. - */ int32_t -stripe_create (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t flags, - mode_t mode, - fd_t *fd) -{ - stripe_private_t *priv = this->private; - stripe_local_t *local = NULL; - xlator_list_t *trav = NULL; - - /* files created in O_APPEND mode does not allow lseek() on fd */ - flags &= ~O_APPEND; - - if (priv->first_child_down || priv->nodes_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning EIO"); - STACK_UNWIND (frame, -1, EIO, fd, loc->inode, NULL); - return 0; - } - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - local->op_errno = ENOTCONN; - local->stripe_size = stripe_get_matching_bs (loc->path, - priv->pattern, - priv->block_size); - frame->local = local; - local->inode = loc->inode; - loc_copy (&local->loc, loc); - local->fd = fd_ref (fd); - - local->call_count = ((stripe_private_t *)this->private)->child_count; - - trav = this->children; - while (trav) { - STACK_WIND (frame, - stripe_create_cbk, - trav->xlator, - trav->xlator->fops->create, - loc, flags, mode, fd); - trav = trav->next; - } - - return 0; +stripe_zerofill_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *prebuf, + struct iatt *postbuf, dict_t *xdata) +{ + int32_t callcnt = 0; + stripe_local_t *local = NULL; + stripe_local_t *mlocal = NULL; + call_frame_t *prev = NULL; + call_frame_t *mframe = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + + prev = cookie; + local = frame->local; + mframe = local->orig_frame; + mlocal = mframe->local; + + LOCK(&frame->lock); + { + callcnt = ++mlocal->call_count; + + if (op_ret == 0) { + mlocal->post_buf = *postbuf; + mlocal->pre_buf = *prebuf; + + mlocal->prebuf_blocks += prebuf->ia_blocks; + mlocal->postbuf_blocks += postbuf->ia_blocks; + + correct_file_size(prebuf, mlocal->fctx, prev); + correct_file_size(postbuf, mlocal->fctx, prev); + + if (mlocal->prebuf_size < prebuf->ia_size) + mlocal->prebuf_size = prebuf->ia_size; + if (mlocal->postbuf_size < postbuf->ia_size) + mlocal->postbuf_size = postbuf->ia_size; + } + + /* return the first failure */ + if (mlocal->op_ret == 0) { + mlocal->op_ret = op_ret; + mlocal->op_errno = op_errno; + } + } + UNLOCK (&frame->lock); + + if ((callcnt == mlocal->wind_count) && mlocal->unwind) { + mlocal->pre_buf.ia_size = mlocal->prebuf_size; + mlocal->pre_buf.ia_blocks = mlocal->prebuf_blocks; + mlocal->post_buf.ia_size = mlocal->postbuf_size; + mlocal->post_buf.ia_blocks = mlocal->postbuf_blocks; + + STRIPE_STACK_UNWIND (zerofill, mframe, mlocal->op_ret, + mlocal->op_errno, &mlocal->pre_buf, + &mlocal->post_buf, NULL); + } +out: + STRIPE_STACK_DESTROY(frame); + return 0; } -/** - * stripe_open_cbk - - */ int32_t -stripe_open_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd) +stripe_zerofill(call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, + size_t len, dict_t *xdata) { - int32_t callcnt = 0; - stripe_local_t *local = frame->local; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - local->failed = 1; - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->op_ret = -1; - local->op_errno = op_errno; - } - - if (op_ret >= 0) - local->op_ret = op_ret; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->failed) - local->op_ret = -1; - - if (local->op_ret >= 0) { - fd_ctx_set (local->fd, this, local->stripe_size); - } - loc_wipe (&local->loc); - STACK_UNWIND (frame, local->op_ret, local->op_errno, fd); - } + stripe_local_t *local = NULL; + stripe_fd_ctx_t *fctx = NULL; + int32_t op_errno = 1; + int32_t idx = 0; + int32_t offset_offset = 0; + int32_t remaining_size = 0; + off_t fill_size = 0; + uint64_t stripe_size = 0; + uint64_t tmp_fctx = 0; + off_t dest_offset = 0; + call_frame_t *fframe = NULL; + stripe_local_t *flocal = NULL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + VALIDATE_OR_GOTO (fd->inode, err); + + inode_ctx_get (fd->inode, this, &tmp_fctx); + if (!tmp_fctx) { + op_errno = EINVAL; + goto err; + } + fctx = (stripe_fd_ctx_t *)(long)tmp_fctx; + stripe_size = fctx->stripe_size; + + STRIPE_VALIDATE_FCTX (fctx, err); + + remaining_size = len; + + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + fctx = (stripe_fd_ctx_t *)(long)tmp_fctx; + stripe_size = fctx->stripe_size; + + STRIPE_VALIDATE_FCTX (fctx, err); + + remaining_size = len; + + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + fctx = (stripe_fd_ctx_t *)(long)tmp_fctx; + stripe_size = fctx->stripe_size; + + STRIPE_VALIDATE_FCTX (fctx, err); + + remaining_size = len; + + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + frame->local = local; + local->stripe_size = stripe_size; + local->fctx = fctx; + + if (!stripe_size) { + gf_log (this->name, GF_LOG_DEBUG, + "Wrong stripe size for the file"); + op_errno = EINVAL; + goto err; + } + + while (1) { + fframe = copy_frame(frame); + flocal = mem_get0(this->local_pool); + if (!flocal) { + op_errno = ENOMEM; + goto err; + } + flocal->orig_frame = frame; + fframe->local = flocal; + + idx = (((offset + offset_offset) / + local->stripe_size) % fctx->stripe_count); + + fill_size = (local->stripe_size - + ((offset + offset_offset) % local->stripe_size)); + if (fill_size > remaining_size) + fill_size = remaining_size; + + remaining_size -= fill_size; + + local->wind_count++; + if (remaining_size == 0) + local->unwind = 1; + + dest_offset = offset + offset_offset; + if (fctx->stripe_coalesce) + dest_offset = coalesced_offset(dest_offset, + local->stripe_size, + fctx->stripe_count); + + STACK_WIND(fframe, stripe_zerofill_cbk, fctx->xl_array[idx], + fctx->xl_array[idx]->fops->zerofill, fd, + dest_offset, fill_size, xdata); + offset_offset += fill_size; + if (remaining_size == 0) + break; + } + + return 0; +err: + if (fframe) + STRIPE_STACK_DESTROY(fframe); + + STRIPE_STACK_UNWIND (zerofill, frame, -1, op_errno, NULL, NULL, NULL); + return 0; +} +int32_t +stripe_release (xlator_t *this, fd_t *fd) +{ return 0; } - -/** - * stripe_getxattr_cbk - - */ -int32_t -stripe_open_getxattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dict_t *dict) +int +stripe_forget (xlator_t *this, inode_t *inode) { - int32_t callcnt = 0; - stripe_local_t *local = frame->local; - xlator_list_t *trav = this->children; - stripe_private_t *priv = this->private; + uint64_t tmp_fctx = 0; + stripe_fd_ctx_t *fctx = NULL; - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->op_ret = -1; - local->op_errno = op_errno; - if (op_errno == ENOTCONN) - local->failed = 1; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (!local->failed && (local->op_ret != -1)) { - /* If getxattr doesn't fails, call open */ - char size_key[256] = {0,}; - data_t *stripe_size_data = NULL; - - sprintf (size_key, - "trusted.%s.stripe-size", this->name); - stripe_size_data = dict_get (dict, size_key); - - if (stripe_size_data) { - local->stripe_size = - data_to_int64 (stripe_size_data); - /* - if (local->stripe_size != priv->block_size) { - gf_log (this->name, GF_LOG_WARNING, - "file(%s) is having different " - "block-size", local->loc.path); - } - */ - } else { - /* if the file was created using earlier - versions of stripe */ - gf_log (this->name, GF_LOG_CRITICAL, - "[CRITICAL] Seems like file(%s) " - "created using earlier version", - local->loc.path); - } - } - - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_open_cbk, - trav->xlator, - trav->xlator->fops->open, - &local->loc, local->flags, local->fd); - trav = trav->next; - } - } + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (inode, err); - return 0; -} + (void) inode_ctx_del (inode, this, &tmp_fctx); + if (!tmp_fctx) { + goto err; + } -/** - * stripe_open - - */ -int32_t -stripe_open (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t flags, - fd_t *fd) -{ - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* files opened in O_APPEND mode does not allow lseek() on fd */ - flags &= ~O_APPEND; - - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning ENOTCONN"); - STACK_UNWIND (frame, -1, ENOTCONN, NULL); - return 0; - } + fctx = (stripe_fd_ctx_t *)(long)tmp_fctx; - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->fd = fd; - frame->local = local; - local->inode = loc->inode; - loc_copy (&local->loc, loc); - - /* Striped files */ - local->flags = flags; - local->call_count = priv->child_count; - local->stripe_size = stripe_get_matching_bs (loc->path, - priv->pattern, - priv->block_size); - - if (priv->xattr_supported) { - while (trav) { - STACK_WIND (frame, - stripe_open_getxattr_cbk, - trav->xlator, - trav->xlator->fops->getxattr, - loc, NULL); - trav = trav->next; - } - } else { - while (trav) { - STACK_WIND (frame, - stripe_open_cbk, - trav->xlator, - trav->xlator->fops->open, - &local->loc, local->flags, local->fd); - trav = trav->next; - } - } + if (!fctx->static_array) + GF_FREE (fctx->xl_array); - return 0; + GF_FREE (fctx); +err: + return 0; } -/** - * stripe_opendir_cbk - - */ int32_t -stripe_opendir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd) +notify (xlator_t *this, int32_t event, void *data, ...) { - int32_t callcnt = 0; - stripe_local_t *local = frame->local; + stripe_private_t *priv = NULL; + int down_client = 0; + int i = 0; + gf_boolean_t heard_from_all_children = _gf_false; + + if (!this) + return 0; + + priv = this->private; + if (!priv) + return 0; + + switch (event) + { + case GF_EVENT_CHILD_UP: + { + /* get an index number to set */ + for (i = 0; i < priv->child_count; i++) { + if (data == priv->xl_array[i]) + break; + } + + if (priv->child_count == i) { + gf_log (this->name, GF_LOG_ERROR, + "got GF_EVENT_CHILD_UP bad subvolume %s", + data? ((xlator_t *)data)->name: NULL); + break; + } + + LOCK (&priv->lock); + { + if (data == FIRST_CHILD (this)) + priv->first_child_down = 0; + priv->last_event[i] = event; + } + UNLOCK (&priv->lock); + } + break; + case GF_EVENT_CHILD_CONNECTING: + { + // 'CONNECTING' doesn't ensure its CHILD_UP, so do nothing + goto out; + } + case GF_EVENT_CHILD_DOWN: + { + /* get an index number to set */ + for (i = 0; i < priv->child_count; i++) { + if (data == priv->xl_array[i]) + break; + } + + if (priv->child_count == i) { + gf_log (this->name, GF_LOG_ERROR, + "got GF_EVENT_CHILD_DOWN bad subvolume %s", + data? ((xlator_t *)data)->name: NULL); + break; + } + + LOCK (&priv->lock); + { + if (data == FIRST_CHILD (this)) + priv->first_child_down = 1; + priv->last_event[i] = event; + } + UNLOCK (&priv->lock); + } + break; + + default: + { + /* */ + default_notify (this, event, data); + goto out; + } + break; + } + + // Consider child as down if it's last_event is not CHILD_UP + for (i = 0, down_client = 0; i < priv->child_count; i++) + if (priv->last_event[i] != GF_EVENT_CHILD_UP) + down_client++; + + LOCK (&priv->lock); + { + priv->nodes_down = down_client; + } + UNLOCK (&priv->lock); + + heard_from_all_children = _gf_true; + for (i = 0; i < priv->child_count; i++) + if (!priv->last_event[i]) + heard_from_all_children = _gf_false; + + if (heard_from_all_children) + default_notify (this, event, data); +out: + return 0; +} - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->op_ret = -1; - local->failed = 1; - local->op_errno = op_errno; - } - - if (op_ret >= 0) - local->op_ret = op_ret; - } - UNLOCK (&frame->lock); +int +stripe_setxattr_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int op_ret, int op_errno, dict_t *xdata) +{ + int ret = -1; + int call_cnt = 0; + stripe_local_t *local = NULL; + + if (!frame || !frame->local || !this) { + gf_log ("", GF_LOG_ERROR, "Possible NULL deref"); + return ret; + } + + local = frame->local; + + LOCK (&frame->lock); + { + call_cnt = --local->wind_count; + + /** + * We overwrite ->op_* values here for subsequent faliure + * conditions, hence we propogate the last errno down the + * stack. + */ + if (op_ret < 0) { + local->op_ret = op_ret; + local->op_errno = op_errno; + goto unlock; + } + } + + unlock: + UNLOCK (&frame->lock); + + if (!call_cnt) { + STRIPE_STACK_UNWIND (setxattr, frame, local->op_ret, + local->op_errno, xdata); + } + + return 0; +} - if (!callcnt) { - STACK_UNWIND (frame, local->op_ret, - local->op_errno, local->fd); - } +#ifdef HAVE_BD_XLATOR +int +stripe_is_bd (dict_t *this, char *key, data_t *value, void *data) +{ + gf_boolean_t *is_bd = data; - return 0; -} + if (data == NULL) + return 0; + if (XATTR_IS_BD (key)) + *is_bd = _gf_true; -/** - * stripe_opendir - - */ -int32_t -stripe_opendir (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - fd_t *fd) + return 0; +} + +inline gf_boolean_t +stripe_setxattr_is_bd (dict_t *dict) { - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; + gf_boolean_t is_bd = _gf_false; - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); + if (dict == NULL) + goto out; - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning EIO"); - STACK_UNWIND (frame, -1, EIO, NULL); - return 0; - } + dict_foreach (dict, stripe_is_bd, &is_bd); +out: + return is_bd; +} +#else +#define stripe_setxattr_is_bd(dict) _gf_false +#endif - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - frame->local = local; - local->inode = loc->inode; - local->fd = fd; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_opendir_cbk, - trav->xlator, - trav->xlator->fops->opendir, - loc, fd); - trav = trav->next; - } - - return 0; +int +stripe_setxattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, dict_t *dict, int flags, dict_t *xdata) +{ + int32_t op_errno = EINVAL; + xlator_list_t *trav = NULL; + stripe_private_t *priv = NULL; + stripe_local_t *local = NULL; + int i = 0; + gf_boolean_t is_bd = _gf_false; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->inode, err); + + GF_IF_INTERNAL_XATTR_GOTO ("trusted.*stripe*", dict, + op_errno, err); + + priv = this->private; + trav = this->children; + + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + frame->local = local; + local->wind_count = priv->child_count; + local->op_ret = local->op_errno = 0; + + is_bd = stripe_setxattr_is_bd (dict); + + /** + * Set xattrs for directories on all subvolumes. Additionally + * this power is only given to a special client. Bd xlator + * also needs xattrs for regular files (ie LVs) + */ + if (((frame->root->pid == GF_CLIENT_PID_GSYNCD) && + IA_ISDIR (loc->inode->ia_type)) || is_bd) { + for (i = 0; i < priv->child_count; i++, trav = trav->next) { + STACK_WIND (frame, stripe_setxattr_cbk, + trav->xlator, trav->xlator->fops->setxattr, + loc, dict, flags, xdata); + } + } else { + local->wind_count = 1; + STACK_WIND (frame, stripe_setxattr_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->setxattr, + loc, dict, flags, xdata); + } + + return 0; +err: + STRIPE_STACK_UNWIND (setxattr, frame, -1, op_errno, NULL); + return 0; } -/** - * stripe_getxattr_cbk - - */ -int32_t -stripe_getxattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dict_t *value) +int +stripe_fsetxattr_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int op_ret, int op_errno, dict_t *xdata) { - STACK_UNWIND (frame, op_ret, op_errno, value); - return 0; + STRIPE_STACK_UNWIND (fsetxattr, frame, op_ret, op_errno, xdata); + return 0; } -/** - * stripe_getxattr - - */ -int32_t -stripe_getxattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - const char *name) +int +stripe_is_special_key (dict_t *this, + char *key, + data_t *value, + void *data) { - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); + gf_boolean_t *is_special = NULL; - STACK_WIND (frame, - stripe_getxattr_cbk, - FIRST_CHILD(this), - FIRST_CHILD(this)->fops->getxattr, - loc, name); + if (data == NULL) { + goto out; + } - return 0; + is_special = data; + + if (XATTR_IS_LOCKINFO (key) || XATTR_IS_BD (key)) + *is_special = _gf_true; + +out: + return 0; } -/** - * stripe_removexattr - - */ int32_t -stripe_removexattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - const char *name) +stripe_fsetxattr_everyone_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *xdata) { - stripe_private_t *priv = this->private; + int call_count = 0; + stripe_local_t *local = NULL; + + local = frame->local; + + LOCK (&frame->lock); + { + call_count = --local->wind_count; + + if (op_ret < 0) { + local->op_ret = op_ret; + local->op_errno = op_errno; + } + } + UNLOCK (&frame->lock); + + if (call_count == 0) { + STRIPE_STACK_UNWIND (fsetxattr, frame, local->op_ret, + local->op_errno, NULL); + } + return 0; +} - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); +int +stripe_fsetxattr_to_everyone (call_frame_t *frame, xlator_t *this, fd_t *fd, + dict_t *dict, int flags, dict_t *xdata) +{ + xlator_list_t *trav = NULL; + stripe_private_t *priv = NULL; + int ret = -1; + stripe_local_t *local = NULL; - if (priv->first_child_down) { - gf_log (this->name, GF_LOG_WARNING, - "First node down, returning ENOTCONN"); - STACK_UNWIND (frame, -1, ENOTCONN, NULL); - return 0; - } + priv = this->private; - STACK_WIND (frame, - stripe_common_cbk, - FIRST_CHILD(this), - FIRST_CHILD(this)->fops->removexattr, - loc, name); + local = mem_get0 (this->local_pool); + if (local == NULL) { + goto out; + } - return 0; -} + frame->local = local; + local->wind_count = priv->child_count; -/** - * stripe_lk_cbk - - */ -int32_t -stripe_lk_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct flock *lock) -{ - int32_t callcnt = 0; - stripe_local_t *local = frame->local; + trav = this->children; - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->op_errno = op_errno; - if (op_errno == ENOTCONN) - local->failed = 1; - } - if (op_ret == 0 && local->op_ret == -1) { - /* First successful call, copy the *lock */ - local->op_ret = 0; - local->lock = *lock; - } - } - UNLOCK (&frame->lock); + while (trav) { + STACK_WIND (frame, stripe_fsetxattr_everyone_cbk, + trav->xlator, trav->xlator->fops->fsetxattr, + fd, dict, flags, xdata); + trav = trav->next; + } - if (!callcnt) { - if (local->failed) - local->op_ret = -1; - STACK_UNWIND (frame, local->op_ret, - local->op_errno, &local->lock); - } - return 0; + ret = 0; +out: + return ret; } +inline gf_boolean_t +stripe_fsetxattr_is_special (dict_t *dict) +{ + gf_boolean_t is_spl = _gf_false; -/** - * stripe_lk - - */ -int32_t -stripe_lk (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t cmd, - struct flock *lock) -{ - stripe_local_t *local = NULL; - xlator_list_t *trav = this->children; - stripe_private_t *priv = this->private; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd); - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_lk_cbk, - trav->xlator, - trav->xlator->fops->lk, - fd, cmd, lock); - trav = trav->next; - } + if (dict == NULL) { + goto out; + } - return 0; + dict_foreach (dict, stripe_is_special_key, &is_spl); + +out: + return is_spl; } -/** - * stripe_writedir - - */ -int32_t -stripe_setdents (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t flags, - dir_entry_t *entries, - int32_t count) -{ - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd); - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_cbk, - trav->xlator, - trav->xlator->fops->setdents, - fd, flags, entries, count); - trav = trav->next; - } +int +stripe_fsetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd, + dict_t *dict, int flags, dict_t *xdata) +{ + int32_t op_ret = -1, ret = -1, op_errno = EINVAL; + gf_boolean_t is_spl = _gf_false; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + GF_IF_INTERNAL_XATTR_GOTO ("trusted.*stripe*", dict, + op_errno, err); + + is_spl = stripe_fsetxattr_is_special (dict); + if (is_spl) { + ret = stripe_fsetxattr_to_everyone (frame, this, fd, dict, + flags, xdata); + if (ret < 0) { + op_errno = ENOMEM; + goto err; + } + + goto out; + } + + STACK_WIND (frame, stripe_fsetxattr_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->fsetxattr, + fd, dict, flags, xdata); +out: + return 0; +err: + STRIPE_STACK_UNWIND (fsetxattr, frame, op_ret, op_errno, NULL); + return 0; +} - return 0; +int +stripe_removexattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) +{ + STRIPE_STACK_UNWIND (removexattr, frame, op_ret, op_errno, xdata); + return 0; } +int +stripe_removexattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *name, dict_t *xdata) +{ + int32_t op_errno = EINVAL; -/** - * stripe_flush - - */ -int32_t -stripe_flush (call_frame_t *frame, - xlator_t *this, - fd_t *fd) -{ - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd); - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_cbk, - trav->xlator, - trav->xlator->fops->flush, - fd); - trav = trav->next; - } + VALIDATE_OR_GOTO (this, err); - return 0; + GF_IF_NATIVE_XATTR_GOTO ("trusted.*stripe*", + name, op_errno, err); + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (loc, err); + + STACK_WIND (frame, stripe_removexattr_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->removexattr, + loc, name, xdata); + return 0; +err: + STRIPE_STACK_UNWIND (removexattr, frame, -1, op_errno, NULL); + return 0; } -/** - * stripe_close - - */ -int32_t -stripe_release (xlator_t *this, - fd_t *fd) +int +stripe_fremovexattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xdata) { - return 0; + STRIPE_STACK_UNWIND (fremovexattr, frame, op_ret, op_errno, xdata); + return 0; } +int +stripe_fremovexattr (call_frame_t *frame, xlator_t *this, + fd_t *fd, const char *name, dict_t *xdata) +{ + int32_t op_ret = -1; + int32_t op_errno = EINVAL; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); + + GF_IF_NATIVE_XATTR_GOTO ("trusted.*stripe*", + name, op_errno, err); + + STACK_WIND (frame, stripe_fremovexattr_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->fremovexattr, + fd, name, xdata); + return 0; + err: + STRIPE_STACK_UNWIND (fremovexattr, frame, op_ret, op_errno, xdata); + return 0; +} -/** - * stripe_fsync - - */ int32_t -stripe_fsync (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t flags) -{ - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd); - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_cbk, - trav->xlator, - trav->xlator->fops->fsync, - fd, flags); - trav = trav->next; - } - - return 0; +stripe_readdirp_lookup_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, + dict_t *xattr, struct iatt *parent) +{ + stripe_local_t *local = NULL; + call_frame_t *main_frame = NULL; + stripe_local_t *main_local = NULL; + gf_dirent_t *entry = NULL; + call_frame_t *prev = NULL; + int done = 0; + + local = frame->local; + prev = cookie; + + entry = local->dirent; + + main_frame = local->orig_frame; + main_local = main_frame->local; + LOCK (&frame->lock); + { + + local->call_count--; + if (!local->call_count) + done = 1; + if (op_ret == -1) { + local->op_errno = op_errno; + local->op_ret = op_ret; + goto unlock; + } + + if (stripe_ctx_handle(this, prev, local, xattr)) + gf_log(this->name, GF_LOG_ERROR, + "Error getting fctx info from dict."); + + correct_file_size(stbuf, local->fctx, prev); + + stripe_iatt_merge (stbuf, &entry->d_stat); + local->stbuf_blocks += stbuf->ia_blocks; + } +unlock: + UNLOCK(&frame->lock); + + if (done) { + inode_ctx_put (entry->inode, this, + (uint64_t) (long)local->fctx); + + done = 0; + LOCK (&main_frame->lock); + { + main_local->wind_count--; + if (!main_local->wind_count) + done = 1; + if (local->op_ret == -1) { + main_local->op_errno = local->op_errno; + main_local->op_ret = local->op_ret; + } + entry->d_stat.ia_blocks = local->stbuf_blocks; + } + UNLOCK (&main_frame->lock); + if (done) { + main_frame->local = NULL; + STRIPE_STACK_UNWIND (readdir, main_frame, + main_local->op_ret, + main_local->op_errno, + &main_local->entries, NULL); + gf_dirent_free (&main_local->entries); + stripe_local_wipe (main_local); + mem_put (main_local); + } + frame->local = NULL; + stripe_local_wipe (local); + mem_put (local); + STRIPE_STACK_DESTROY (frame); + } + + return 0; } - -/** - * stripe_fstat - - */ int32_t -stripe_fstat (call_frame_t *frame, - xlator_t *this, - fd_t *fd) -{ - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd); - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->inode = fd->inode; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_buf_cbk, - trav->xlator, - trav->xlator->fops->fstat, - fd); - trav = trav->next; - } +stripe_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + gf_dirent_t *orig_entries, dict_t *xdata) +{ + stripe_local_t *local = NULL; + call_frame_t *prev = NULL; + gf_dirent_t *local_entry = NULL; + gf_dirent_t *tmp_entry = NULL; + xlator_list_t *trav = NULL; + loc_t loc = {0, }; + int32_t count = 0; + stripe_private_t *priv = NULL; + int32_t subvols = 0; + dict_t *xattrs = NULL; + call_frame_t *local_frame = NULL; + stripe_local_t *local_ent = NULL; + + if (!this || !frame || !frame->local || !cookie) { + gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); + goto out; + } + prev = cookie; + local = frame->local; + trav = this->children; + priv = this->private; + + subvols = priv->child_count; + + LOCK (&frame->lock); + { + if (op_ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "%s returned error %s", + prev->this->name, strerror (op_errno)); + local->op_errno = op_errno; + local->op_ret = op_ret; + goto unlock; + } else { + local->op_ret = op_ret; + list_splice_init (&orig_entries->list, + &local->entries.list); + local->wind_count = op_ret; + } + + } +unlock: + UNLOCK (&frame->lock); + + if (op_ret == -1) + goto out; + + xattrs = dict_new (); + if (xattrs) + (void) stripe_xattr_request_build (this, xattrs, 0, 0, 0, 0); + count = op_ret; + list_for_each_entry_safe (local_entry, tmp_entry, + (&local->entries.list), list) { + + if (!local_entry) + break; + if (!IA_ISREG (local_entry->d_stat.ia_type)) { + LOCK (&frame->lock); + { + local->wind_count--; + count = local->wind_count; + } + UNLOCK (&frame->lock); + continue; + } + + local_frame = copy_frame (frame); + + if (!local_frame) { + op_errno = ENOMEM; + op_ret = -1; + goto out; + } + + local_ent = mem_get0 (this->local_pool); + if (!local_ent) { + op_errno = ENOMEM; + op_ret = -1; + goto out; + } + + loc.inode = inode_ref (local_entry->inode); + + uuid_copy (loc.gfid, local_entry->d_stat.ia_gfid); + + local_ent->orig_frame = frame; + + local_ent->call_count = subvols; + + local_ent->dirent = local_entry; + + local_frame->local = local_ent; + + trav = this->children; + while (trav) { + STACK_WIND (local_frame, stripe_readdirp_lookup_cbk, + trav->xlator, trav->xlator->fops->lookup, + &loc, xattrs); + trav = trav->next; + } + loc_wipe (&loc); + } +out: + if (!count) { + /* all entries are directories */ + frame->local = NULL; + STRIPE_STACK_UNWIND (readdir, frame, local->op_ret, + local->op_errno, &local->entries, NULL); + gf_dirent_free (&local->entries); + stripe_local_wipe (local); + mem_put (local); + } + if (xattrs) + dict_unref (xattrs); + return 0; - return 0; } +int32_t +stripe_readdirp (call_frame_t *frame, xlator_t *this, + fd_t *fd, size_t size, off_t off, dict_t *xdata) +{ + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + xlator_list_t *trav = NULL; + int op_errno = -1; + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (fd, err); -/** - * stripe_fchmod - - */ -int32_t -stripe_fchmod (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - mode_t mode) -{ - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd); - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->inode = fd->inode; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_buf_cbk, - trav->xlator, - trav->xlator->fops->fchmod, - fd, mode); - trav = trav->next; - } + priv = this->private; + trav = this->children; - return 0; -} + if (priv->first_child_down) { + op_errno = ENOTCONN; + goto err; + } + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } -/** - * stripe_fchown - - */ -int32_t -stripe_fchown (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - uid_t uid, - gid_t gid) -{ - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd); - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->inode = fd->inode; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_buf_cbk, - trav->xlator, - trav->xlator->fops->fchown, - fd, uid, gid); - trav = trav->next; - } + frame->local = local; - return 0; -} + local->fd = fd_ref (fd); + local->wind_count = 0; -/** - * stripe_ftruncate - - */ -int32_t -stripe_ftruncate (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - off_t offset) -{ - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd); - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->inode = fd->inode; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_buf_cbk, - trav->xlator, - trav->xlator->fops->ftruncate, - fd, offset); - trav = trav->next; - } + local->count = 0; + local->op_ret = -1; + INIT_LIST_HEAD(&local->entries); - return 0; -} + if (!trav) + goto err; + STACK_WIND (frame, stripe_readdirp_cbk, trav->xlator, + trav->xlator->fops->readdirp, fd, size, off, xdata); + return 0; +err: + op_errno = (op_errno == -1) ? errno : op_errno; + STRIPE_STACK_UNWIND (readdir, frame, -1, op_errno, NULL, NULL); + + return 0; + +} -/** - * stripe_releasedir - - */ int32_t -stripe_releasedir (xlator_t *this, - fd_t *fd) +mem_acct_init (xlator_t *this) { - return 0; + int ret = -1; + + if (!this) + goto out; + + ret = xlator_mem_acct_init (this, gf_stripe_mt_end + 1); + + if (ret != 0) { + gf_log (this->name, GF_LOG_ERROR, "Memory accounting init" + "failed"); + goto out; + } + +out: + return ret; } +static int +clear_pattern_list (stripe_private_t *priv) +{ + struct stripe_options *prev = NULL; + struct stripe_options *trav = NULL; + int ret = -1; + + GF_VALIDATE_OR_GOTO ("stripe", priv, out); + + trav = priv->pattern; + priv->pattern = NULL; + while (trav) { + prev = trav; + trav = trav->next; + GF_FREE (prev); + } + + ret = 0; + out: + return ret; -/** - * stripe_fsyncdir - - */ -int32_t -stripe_fsyncdir (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t flags) -{ - stripe_local_t *local = NULL; - stripe_private_t *priv = this->private; - xlator_list_t *trav = this->children; - - STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd); - - /* Initialization */ - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->op_ret = -1; - frame->local = local; - local->call_count = priv->child_count; - - while (trav) { - STACK_WIND (frame, - stripe_stack_unwind_cbk, - trav->xlator, - trav->xlator->fops->fsyncdir, - fd, - flags); - trav = trav->next; - } - return 0; } +int +reconfigure (xlator_t *this, dict_t *options) +{ + + stripe_private_t *priv = NULL; + data_t *data = NULL; + int ret = -1; + volume_option_t *opt = NULL; + + GF_ASSERT (this); + GF_ASSERT (this->private); + + priv = this->private; + + + ret = 0; + LOCK (&priv->lock); + { + ret = clear_pattern_list (priv); + if (ret) + goto unlock; + + data = dict_get (options, "block-size"); + if (data) { + ret = set_stripe_block_size (this, priv, data->data); + if (ret) + goto unlock; + } else { + opt = xlator_volume_option_get (this, "block-size"); + if (!opt) { + gf_log (this->name, GF_LOG_WARNING, + "option 'block-size' not found"); + ret = -1; + goto unlock; + } + + if (gf_string2bytesize (opt->default_value, &priv->block_size)){ + gf_log (this->name, GF_LOG_ERROR, + "Unable to set default block-size "); + ret = -1; + goto unlock; + } + } + + GF_OPTION_RECONF("coalesce", priv->coalesce, options, bool, + unlock); + } + unlock: + UNLOCK (&priv->lock); + if (ret) + goto out; + + ret = 0; + out: + return ret; + +} + /** - * stripe_single_readv_cbk - This function is used as return fn, when the - * file name doesn't match the pattern specified for striping. + * init - This function is called when xlator-graph gets initialized. + * The option given in volfiles are parsed here. + * @this - */ int32_t -stripe_single_readv_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iovec *vector, - int32_t count, - struct stat *stbuf, - struct iobref *iobref) -{ - STACK_UNWIND (frame, op_ret, op_errno, vector, count, stbuf, iobref); - return 0; +init (xlator_t *this) +{ + stripe_private_t *priv = NULL; + volume_option_t *opt = NULL; + xlator_list_t *trav = NULL; + data_t *data = NULL; + int32_t count = 0; + int ret = -1; + + if (!this) + goto out; + + trav = this->children; + while (trav) { + count++; + trav = trav->next; + } + + if (!count) { + gf_log (this->name, GF_LOG_ERROR, + "stripe configured without \"subvolumes\" option. " + "exiting"); + goto out; + } + + if (!this->parents) { + gf_log (this->name, GF_LOG_WARNING, + "dangling volume. check volfile "); + } + + if (count == 1) { + gf_log (this->name, GF_LOG_ERROR, + "stripe configured with only one \"subvolumes\" option." + " please check the volume. exiting"); + goto out; + } + + priv = GF_CALLOC (1, sizeof (stripe_private_t), + gf_stripe_mt_stripe_private_t); + + if (!priv) + goto out; + priv->xl_array = GF_CALLOC (count, sizeof (xlator_t *), + gf_stripe_mt_xlator_t); + if (!priv->xl_array) + goto out; + + priv->last_event = GF_CALLOC (count, sizeof (int), + gf_stripe_mt_int32_t); + if (!priv->last_event) + goto out; + + priv->child_count = count; + LOCK_INIT (&priv->lock); + + trav = this->children; + count = 0; + while (trav) { + priv->xl_array[count++] = trav->xlator; + trav = trav->next; + } + + if (count > 256) { + gf_log (this->name, GF_LOG_ERROR, + "maximum number of stripe subvolumes supported " + "is 256"); + goto out; + } + + ret = 0; + LOCK (&priv->lock); + { + opt = xlator_volume_option_get (this, "block-size"); + if (!opt) { + gf_log (this->name, GF_LOG_WARNING, + "option 'block-size' not found"); + ret = -1; + goto unlock; + } + if (gf_string2bytesize (opt->default_value, &priv->block_size)){ + gf_log (this->name, GF_LOG_ERROR, + "Unable to set default block-size "); + ret = -1; + goto unlock; + } + /* option stripe-pattern *avi:1GB,*pdf:16K */ + data = dict_get (this->options, "block-size"); + if (data) { + ret = set_stripe_block_size (this, priv, data->data); + if (ret) + goto unlock; + } + } + unlock: + UNLOCK (&priv->lock); + if (ret) + goto out; + + GF_OPTION_INIT ("use-xattr", priv->xattr_supported, bool, out); + /* notify related */ + priv->nodes_down = priv->child_count; + + GF_OPTION_INIT("coalesce", priv->coalesce, bool, out); + + this->local_pool = mem_pool_new (stripe_local_t, 128); + if (!this->local_pool) { + ret = -1; + gf_log (this->name, GF_LOG_ERROR, + "failed to create local_t's memory pool"); + goto out; + } + + this->private = priv; + + ret = 0; +out: + if (ret) { + if (priv) { + GF_FREE (priv->xl_array); + GF_FREE (priv); + } + } + return ret; } /** - * stripe_readv_cbk - get all the striped reads, and order it properly, send it - * to above layer after putting it in a single vector. + * fini - Free all the private variables + * @this - */ +void +fini (xlator_t *this) +{ + stripe_private_t *priv = NULL; + struct stripe_options *prev = NULL; + struct stripe_options *trav = NULL; + + if (!this) + goto out; + + priv = this->private; + if (priv) { + this->private = NULL; + GF_FREE (priv->xl_array); + + trav = priv->pattern; + while (trav) { + prev = trav; + trav = trav->next; + GF_FREE (prev); + } + GF_FREE (priv->last_event); + LOCK_DESTROY (&priv->lock); + GF_FREE (priv); + } + +out: + return; +} + int32_t -stripe_readv_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iovec *vector, - int32_t count, - struct stat *stbuf, - struct iobref *iobref) -{ - int32_t index = 0; - int32_t callcnt = 0; - call_frame_t *main_frame = NULL; - stripe_local_t *main_local = NULL; - stripe_local_t *local = frame->local; - - index = local->node_index; - main_frame = local->orig_frame; - main_local = main_frame->local; - - LOCK (&main_frame->lock); - { - main_local->replies[index].op_ret = op_ret; - main_local->replies[index].op_errno = op_errno; - if (op_ret >= 0) { - main_local->replies[index].stbuf = *stbuf; - main_local->replies[index].count = count; - main_local->replies[index].vector = - iov_dup (vector, count); - - if (!main_local->iobref) - main_local->iobref = iobref_new (); - iobref_merge (main_local->iobref, iobref); - } - callcnt = ++main_local->call_count; - } - UNLOCK(&main_frame->lock); - - if (callcnt == main_local->wind_count) { - int32_t final_count = 0; - struct iovec *final_vec = NULL; - struct stat tmp_stbuf = {0,}; - struct iobref *iobref = NULL; - - op_ret = 0; - memcpy (&tmp_stbuf, &main_local->replies[0].stbuf, - sizeof (struct stat)); - for (index=0; index < main_local->wind_count; index++) { - /* TODO: check whether each stripe returned 'expected' - * number of bytes - */ - if (main_local->replies[index].op_ret == -1) { - op_ret = -1; - op_errno = main_local->replies[index].op_errno; - break; - } - op_ret += main_local->replies[index].op_ret; - final_count += main_local->replies[index].count; - /* TODO: Do I need to send anything more in stbuf? */ - if (tmp_stbuf.st_size < - main_local->replies[index].stbuf.st_size) { - tmp_stbuf.st_size = - main_local->replies[index].stbuf.st_size; - } - } - if (op_ret != -1) { - final_vec = CALLOC (final_count, - sizeof (struct iovec)); - ERR_ABORT (final_vec); - final_count = 0; - - for (index=0; - index < main_local->wind_count; index++) { - memcpy (final_vec + final_count, - main_local->replies[index].vector, - (main_local->replies[index].count * - sizeof (struct iovec))); - final_count += - main_local->replies[index].count; - - free (main_local->replies[index].vector); - } - } else { - final_vec = NULL; - final_count = 0; - } - /* */ - FREE (main_local->replies); - iobref = main_local->iobref; - STACK_UNWIND (main_frame, op_ret, op_errno, - final_vec, final_count, &tmp_stbuf, iobref); - - iobref_unref (iobref); - if (final_vec) - free (final_vec); - } +stripe_getxattr_unwind (call_frame_t *frame, + int op_ret, int op_errno, dict_t *dict, dict_t *xdata) - STACK_DESTROY (frame->root); - return 0; +{ + STRIPE_STACK_UNWIND (getxattr, frame, op_ret, op_errno, dict, xdata); + return 0; } -/** - * stripe_readv - - */ -int32_t -stripe_readv (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t offset) -{ - int32_t index = 0; - int32_t num_stripe = 0; - size_t frame_size = 0; - off_t rounded_end = 0; - uint64_t stripe_size = 0; - off_t rounded_start = 0; - off_t frame_offset = offset; - stripe_local_t *local = NULL; - call_frame_t *rframe = NULL; - stripe_local_t *rlocal = NULL; - xlator_list_t *trav = this->children; - stripe_private_t *priv = this->private; - - fd_ctx_get (fd, this, &stripe_size); - if (!stripe_size) { - STACK_UNWIND (frame, -1, EINVAL, NULL, 0, NULL); - return 0; - } +int +stripe_internal_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xattr, + dict_t *xdata) +{ - /* The file is stripe across the child nodes. Send the read request - * to the child nodes appropriately after checking which region of - * the file is in which child node. Always '0-<stripe_size>' part of - * the file resides in the first child. - */ - rounded_start = floor (offset, stripe_size); - rounded_end = roof (offset+size, stripe_size); - num_stripe = (rounded_end - rounded_start) / stripe_size; - - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - local->wind_count = num_stripe; - frame->local = local; - - /* This is where all the vectors should be copied. */ - local->replies = CALLOC (1, num_stripe * - sizeof (struct readv_replies)); - ERR_ABORT (local->replies); - - for (index = 0; - index < ((offset / stripe_size) % priv->child_count); - index++) { - trav = trav->next; - } - - for (index = 0; index < num_stripe; index++) { - rframe = copy_frame (frame); - rlocal = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (rlocal); - - frame_size = min (roof (frame_offset+1, stripe_size), - (offset + size)) - frame_offset; - - rlocal->node_index = index; - rlocal->orig_frame = frame; - rframe->local = rlocal; - STACK_WIND (rframe, - stripe_readv_cbk, - trav->xlator, - trav->xlator->fops->readv, - fd, frame_size, frame_offset); - - frame_offset += frame_size; - - trav = trav->next ? trav->next : this->children; - } + char size_key[256] = {0,}; + char index_key[256] = {0,}; + char count_key[256] = {0,}; + char coalesce_key[256] = {0,}; - return 0; -} + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (frame->local, out); + if (!xattr || (op_ret == -1)) + goto out; -/** - * stripe_writev_cbk - - */ -int32_t -stripe_writev_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *stbuf) -{ - int32_t callcnt = 0; - stripe_local_t *local = frame->local; - LOCK(&frame->lock); - { - callcnt = ++local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->op_errno = op_errno; - local->op_ret = -1; - } - if (op_ret >= 0) { - local->op_ret += op_ret; - local->stbuf = *stbuf; - } - } - UNLOCK (&frame->lock); + sprintf (size_key, "trusted.%s.stripe-size", this->name); + sprintf (count_key, "trusted.%s.stripe-count", this->name); + sprintf (index_key, "trusted.%s.stripe-index", this->name); + sprintf (coalesce_key, "trusted.%s.stripe-coalesce", this->name); - if ((callcnt == local->wind_count) && local->unwind) { - STACK_UNWIND (frame, local->op_ret, - local->op_errno, &local->stbuf); - } - return 0; -} + dict_del (xattr, size_key); + dict_del (xattr, count_key); + dict_del (xattr, index_key); + dict_del (xattr, coalesce_key); +out: + STRIPE_STACK_UNWIND (getxattr, frame, op_ret, op_errno, xattr, xdata); + + return 0; -/** - * stripe_single_writev_cbk - - */ -int32_t -stripe_single_writev_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *stbuf) -{ - STACK_UNWIND (frame, op_ret, op_errno, stbuf); - return 0; } -/** - * stripe_writev - - */ -int32_t -stripe_writev (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - struct iovec *vector, - int32_t count, - off_t offset, - struct iobref *iobref) -{ - int32_t idx = 0; - int32_t total_size = 0; - int32_t offset_offset = 0; - int32_t remaining_size = 0; - int32_t tmp_count = count; - off_t fill_size = 0; - uint64_t stripe_size = 0; - struct iovec *tmp_vec = vector; - stripe_private_t *priv = this->private; - stripe_local_t *local = NULL; - xlator_list_t *trav = NULL; - - fd_ctx_get (fd, this, &stripe_size); - if (!stripe_size) { - STACK_UNWIND (frame, -1, EINVAL, NULL); - return 0; - } - /* File has to be stripped across the child nodes */ - for (idx = 0; idx< count; idx ++) { - total_size += tmp_vec[idx].iov_len; - } - remaining_size = total_size; - - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - frame->local = local; - local->stripe_size = stripe_size; - - while (1) { - /* Send striped chunk of the vector to child - nodes appropriately. */ - trav = this->children; - - idx = (((offset + offset_offset) / - local->stripe_size) % priv->child_count); - while (idx) { - trav = trav->next; - idx--; - } - fill_size = (local->stripe_size - - ((offset + offset_offset) % local->stripe_size)); - if (fill_size > remaining_size) - fill_size = remaining_size; - - remaining_size -= fill_size; - - tmp_count = iov_subset (vector, count, offset_offset, - offset_offset + fill_size, NULL); - tmp_vec = CALLOC (tmp_count, sizeof (struct iovec)); - ERR_ABORT (tmp_vec); - tmp_count = iov_subset (vector, count, offset_offset, - offset_offset + fill_size, tmp_vec); - - local->wind_count++; - if (remaining_size == 0) - local->unwind = 1; - - STACK_WIND(frame, - stripe_writev_cbk, - trav->xlator, - trav->xlator->fops->writev, - fd, tmp_vec, tmp_count, offset + offset_offset, - iobref); - FREE (tmp_vec); - offset_offset += fill_size; - if (remaining_size == 0) - break; - } +int +stripe_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xattr, dict_t *xdata) +{ + int call_cnt = 0; + stripe_local_t *local = NULL; - return 0; -} + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (frame->local, out); + local = frame->local; + LOCK (&frame->lock); + { + call_cnt = --local->wind_count; + } + UNLOCK (&frame->lock); -/* Management operations */ + if (!xattr || (op_ret < 0)) + goto out; -/** - * stripe_stats_cbk - Add all the fields received from different clients. - * Once all the clients return, send stats to above layer. - * - */ -int32_t -stripe_stats_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct xlator_stats *stats) -{ - int32_t callcnt = 0; - stripe_local_t *local = frame->local; - - LOCK(&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_WARNING, - "%s returned error %s", - ((call_frame_t *)cookie)->this->name, - strerror (op_errno)); - local->op_ret = -1; - local->op_errno = op_errno; - } - if (op_ret == 0) { - if (local->op_ret == -2) { - /* This is to make sure this is the - first time */ - local->stats = *stats; - local->op_ret = 0; - } else { - local->stats.nr_files += stats->nr_files; - local->stats.free_disk += stats->free_disk; - local->stats.disk_usage += stats->disk_usage; - local->stats.nr_clients += stats->nr_clients; - } - } - } - UNLOCK (&frame->lock); + local->op_ret = 0; - if (!callcnt) { - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stats); - } + if (!local->xattr) { + local->xattr = dict_ref (xattr); + } else { + stripe_aggregate_xattr (local->xattr, xattr); + } - return 0; +out: + if (!call_cnt) { + STRIPE_STACK_UNWIND (getxattr, frame, local->op_ret, op_errno, + local->xattr, xdata); + } + + return 0; } -/** - * stripe_stats - - */ int32_t -stripe_stats (call_frame_t *frame, - xlator_t *this, - int32_t flags) -{ - stripe_local_t *local = NULL; - xlator_list_t *trav = this->children; - - local = CALLOC (1, sizeof (stripe_local_t)); - ERR_ABORT (local); - frame->local = local; - local->op_ret = -2; /* to be used as a flag in _cbk */ - local->call_count = ((stripe_private_t*)this->private)->child_count; - while (trav) { - STACK_WIND (frame, - stripe_stats_cbk, - trav->xlator, - trav->xlator->mops->stats, - flags); - trav = trav->next; - } - return 0; +stripe_vgetxattr_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) +{ + stripe_local_t *local = NULL; + int32_t callcnt = 0; + int32_t ret = -1; + long cky = 0; + void *xattr_val = NULL; + void *xattr_serz = NULL; + stripe_xattr_sort_t *xattr = NULL; + dict_t *stripe_xattr = NULL; + + if (!frame || !frame->local || !this) { + gf_log ("", GF_LOG_ERROR, "Possible NULL deref"); + return ret; + } + + local = frame->local; + cky = (long) cookie; + + if (local->xsel[0] == '\0') { + gf_log (this->name, GF_LOG_ERROR, "Empty xattr in cbk"); + return ret; + } + + LOCK (&frame->lock); + { + callcnt = --local->wind_count; + + if (!dict || (op_ret < 0)) + goto out; + + if (!local->xattr_list) + local->xattr_list = (stripe_xattr_sort_t *) + GF_CALLOC (local->nallocs, + sizeof (stripe_xattr_sort_t), + gf_stripe_mt_xattr_sort_t); + + if (local->xattr_list) { + xattr = local->xattr_list + (int32_t) cky; + + ret = dict_get_ptr_and_len (dict, local->xsel, + &xattr_val, + &xattr->xattr_len); + if (xattr->xattr_len == 0) + goto out; + + xattr->pos = cky; + xattr->xattr_value = gf_memdup (xattr_val, + xattr->xattr_len); + + if (xattr->xattr_value != NULL) + local->xattr_total_len += xattr->xattr_len + 1; + } + } + out: + UNLOCK (&frame->lock); + + if (!callcnt) { + if (!local->xattr_total_len) + goto unwind; + + stripe_xattr = dict_new (); + if (!stripe_xattr) + goto unwind; + + /* select filler based on ->xsel */ + if (XATTR_IS_PATHINFO (local->xsel)) + ret = stripe_fill_pathinfo_xattr (this, local, + (char **)&xattr_serz); + else if (XATTR_IS_LOCKINFO (local->xsel)) { + ret = stripe_fill_lockinfo_xattr (this, local, + &xattr_serz); + } else { + gf_log (this->name, GF_LOG_WARNING, + "Unknown xattr in xattr request"); + goto unwind; + } + + if (!ret) { + ret = dict_set_dynptr (stripe_xattr, local->xsel, + xattr_serz, + local->xattr_total_len); + if (ret) + gf_log (this->name, GF_LOG_ERROR, + "Can't set %s key in dict", + local->xsel); + } + + unwind: + STRIPE_STACK_UNWIND (getxattr, frame, op_ret, op_errno, + stripe_xattr, NULL); + + ret = stripe_free_xattr_str (local); + + GF_FREE (local->xattr_list); + + if (stripe_xattr) + dict_unref (stripe_xattr); + } + + return ret; } -/** - * notify - */ int32_t -notify (xlator_t *this, - int32_t event, - void *data, - ...) -{ - stripe_private_t *priv = this->private; - int down_client = 0; - int i = 0; - - if (!priv) - return 0; - - switch (event) - { - case GF_EVENT_CHILD_UP: - { - /* get an index number to set */ - for (i = 0; i < priv->child_count; i++) { - if (data == priv->xl_array[i]) - break; - } - priv->state[i] = 1; - for (i = 0; i < priv->child_count; i++) { - if (!priv->state[i]) - down_client++; - } - - LOCK (&priv->lock); - { - priv->nodes_down = down_client; +stripe_getxattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *name, dict_t *xdata) +{ + stripe_local_t *local = NULL; + xlator_list_t *trav = NULL; + stripe_private_t *priv = NULL; + int32_t op_errno = EINVAL; + int i = 0; + xlator_t **sub_volumes; + int ret = 0; + + VALIDATE_OR_GOTO (frame, err); + VALIDATE_OR_GOTO (this, err); + VALIDATE_OR_GOTO (loc, err); + VALIDATE_OR_GOTO (loc->path, err); + VALIDATE_OR_GOTO (loc->inode, err); + + priv = this->private; + trav = this->children; + + /* Initialization */ + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + local->op_ret = -1; + frame->local = local; + loc_copy (&local->loc, loc); + + + if (name && (strcmp (GF_XATTR_MARKER_KEY, name) == 0) + && (GF_CLIENT_PID_GSYNCD == frame->root->pid)) { + local->marker.call_count = priv->child_count; + + sub_volumes = alloca ( priv->child_count * + sizeof (xlator_t *)); + for (i = 0, trav = this->children; trav ; + trav = trav->next, i++) { + + *(sub_volumes + i) = trav->xlator; + + } + + if (cluster_getmarkerattr (frame, this, loc, name, + local, stripe_getxattr_unwind, + sub_volumes, priv->child_count, + MARKER_UUID_TYPE, marker_uuid_default_gauge, + priv->vol_uuid)) { + op_errno = EINVAL; + goto err; + } + + return 0; + } + + if (name && strncmp (name, GF_XATTR_QUOTA_SIZE_KEY, + strlen (GF_XATTR_QUOTA_SIZE_KEY)) == 0) { + local->wind_count = priv->child_count; + + for (i = 0, trav=this->children; i < priv->child_count; i++, + trav = trav->next) { + STACK_WIND (frame, stripe_getxattr_cbk, + trav->xlator, trav->xlator->fops->getxattr, + loc, name, xdata); + } + + return 0; + } + + if (name && + ((strncmp (name, GF_XATTR_PATHINFO_KEY, + strlen (GF_XATTR_PATHINFO_KEY)) == 0))) { + if (IA_ISREG (loc->inode->ia_type)) { + ret = inode_ctx_get (loc->inode, this, + (uint64_t *) &local->fctx); + if (ret) + gf_log (this->name, GF_LOG_ERROR, + "stripe size unavailable from fctx" + " relying on pathinfo could lead to" + " wrong results"); + } + + local->nallocs = local->wind_count = priv->child_count; + (void) strncpy (local->xsel, name, strlen (name)); + + /** + * for xattrs that need info from all childs, fill ->xsel + * as above and call the filler function in cbk based on + * it + */ + for (i = 0, trav = this->children; i < priv->child_count; i++, + trav = trav->next) { + STACK_WIND_COOKIE (frame, stripe_vgetxattr_cbk, + (void *) (long) i, trav->xlator, + trav->xlator->fops->getxattr, + loc, name, xdata); + } + + return 0; + } + + if (name &&(*priv->vol_uuid)) { + if ((match_uuid_local (name, priv->vol_uuid) == 0) + && (GF_CLIENT_PID_GSYNCD == frame->root->pid)) { + + if (!IA_FILE_OR_DIR (loc->inode->ia_type)) + local->marker.call_count = 1; + else + local->marker.call_count = priv->child_count; + + sub_volumes = alloca (local->marker.call_count * + sizeof (xlator_t *)); + + for (i = 0, trav = this->children; + i < local->marker.call_count; + i++, trav = trav->next) { + *(sub_volumes + i) = trav->xlator; + + } + + if (cluster_getmarkerattr (frame, this, loc, name, + local, + stripe_getxattr_unwind, + sub_volumes, + local->marker.call_count, + MARKER_XTIME_TYPE, + marker_xtime_default_gauge, + priv->vol_uuid)) { + op_errno = EINVAL; + goto err; + } + + return 0; + } + } + + + STACK_WIND (frame, stripe_internal_getxattr_cbk, FIRST_CHILD(this), + FIRST_CHILD(this)->fops->getxattr, loc, name, xdata); + + return 0; + +err: + STRIPE_STACK_UNWIND (getxattr, frame, -1, op_errno, NULL, NULL); + return 0; +} - if (data == FIRST_CHILD (this)) { - priv->first_child_down = 0; - default_notify (this, event, data); - } - } - UNLOCK (&priv->lock); - } - break; - case GF_EVENT_CHILD_DOWN: - { - /* get an index number to set */ - for (i = 0; i < priv->child_count; i++) { - if (data == priv->xl_array[i]) - break; - } - priv->state[i] = 0; - for (i = 0; i < priv->child_count; i++) { - if (!priv->state[i]) - down_client++; - } +inline gf_boolean_t +stripe_is_special_xattr (const char *name) +{ + gf_boolean_t is_spl = _gf_false; + + if (!name) { + goto out; + } + + if (!strncmp (name, GF_XATTR_LOCKINFO_KEY, + strlen (GF_XATTR_LOCKINFO_KEY)) + || !strncmp (name, GF_XATTR_PATHINFO_KEY, + strlen (GF_XATTR_PATHINFO_KEY))) + is_spl = _gf_true; +out: + return is_spl; +} - LOCK (&priv->lock); - { - priv->nodes_down = down_client; +int32_t +stripe_fgetxattr_from_everyone (call_frame_t *frame, xlator_t *this, fd_t *fd, + const char *name, dict_t *xdata) +{ + stripe_local_t *local = NULL; + stripe_private_t *priv = NULL; + int32_t ret = -1, op_errno = 0; + int i = 0; + xlator_list_t *trav = NULL; + + priv = this->private; + + local = mem_get0 (this->local_pool); + if (!local) { + op_errno = ENOMEM; + goto err; + } + + local->op_ret = -1; + frame->local = local; + + strncpy (local->xsel, name, strlen (name)); + local->nallocs = local->wind_count = priv->child_count; + + for (i = 0, trav = this->children; i < priv->child_count; i++, + trav = trav->next) { + STACK_WIND_COOKIE (frame, stripe_vgetxattr_cbk, + (void *) (long) i, trav->xlator, + trav->xlator->fops->fgetxattr, + fd, name, xdata); + } + + return 0; + +err: + STACK_UNWIND_STRICT (fgetxattr, frame, -1, op_errno, NULL, NULL); + return ret; +} - if (data == FIRST_CHILD (this)) { - priv->first_child_down = 1; - default_notify (this, event, data); - } - } - UNLOCK (&priv->lock); - } - break; +int32_t +stripe_fgetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd, + const char *name, dict_t *xdata) +{ + if (stripe_is_special_xattr (name)) { + stripe_fgetxattr_from_everyone (frame, this, fd, name, xdata); + goto out; + } - default: - { - /* */ - default_notify (this, event, data); - } - break; - } + STACK_WIND (frame, stripe_internal_getxattr_cbk, FIRST_CHILD(this), + FIRST_CHILD(this)->fops->fgetxattr, fd, name, xdata); - return 0; +out: + return 0; } -/** - * init - This function is called when xlator-graph gets initialized. - * The option given in volfiles are parsed here. - * @this - - */ + + + int32_t -init (xlator_t *this) +stripe_priv_dump (xlator_t *this) { - stripe_private_t *priv = NULL; - xlator_list_t *trav = NULL; - data_t *data = NULL; - int32_t count = 0; + char key[GF_DUMP_MAX_BUF_LEN]; + int i = 0; + stripe_private_t *priv = NULL; + int ret = -1; + struct stripe_options *options = NULL; - trav = this->children; - while (trav) { - count++; - trav = trav->next; - } + GF_VALIDATE_OR_GOTO ("stripe", this, out); - if (!count) { - gf_log (this->name, GF_LOG_ERROR, - "stripe configured without \"subvolumes\" option. " - "exiting"); - return -1; - } + priv = this->private; + if (!priv) + goto out; - if (!this->parents) { - gf_log (this->name, GF_LOG_WARNING, - "dangling volume. check volfile "); - } - - priv = CALLOC (1, sizeof (stripe_private_t)); - ERR_ABORT (priv); - priv->xl_array = CALLOC (1, count * sizeof (xlator_t *)); - ERR_ABORT (priv->xl_array); - priv->child_count = count; - LOCK_INIT (&priv->lock); - - trav = this->children; - count = 0; - while (trav) { - priv->xl_array[count++] = trav->xlator; - trav = trav->next; - } + ret = TRY_LOCK (&priv->lock); + if (ret != 0) + goto out; - if (count > 256) { - gf_log (this->name, GF_LOG_ERROR, - "maximum number of stripe subvolumes supported " - "is 256"); - return -1; - } + gf_proc_dump_add_section("xlator.cluster.stripe.%s.priv", this->name); + gf_proc_dump_write("child_count","%d", priv->child_count); - priv->block_size = (128 * GF_UNIT_KB); - /* option stripe-pattern *avi:1GB,*pdf:4096 */ - data = dict_get (this->options, "block-size"); - if (!data) { - gf_log (this->name, GF_LOG_DEBUG, - "No \"option block-size <x>\" given, defaulting " - "to 128KB"); - } else { - char *tmp_str = NULL; - char *tmp_str1 = NULL; - char *dup_str = NULL; - char *stripe_str = NULL; - char *pattern = NULL; - char *num = NULL; - struct stripe_options *temp_stripeopt = NULL; - struct stripe_options *stripe_opt = NULL; - - /* Get the pattern for striping. - "option block-size *avi:10MB" etc */ - stripe_str = strtok_r (data->data, ",", &tmp_str); - while (stripe_str) { - dup_str = strdup (stripe_str); - stripe_opt = CALLOC (1, - sizeof (struct stripe_options)); - ERR_ABORT (stripe_opt); - pattern = strtok_r (dup_str, ":", &tmp_str1); - num = strtok_r (NULL, ":", &tmp_str1); - if (num && - (gf_string2bytesize (num, - &stripe_opt->block_size) - != 0)) { - gf_log (this->name, GF_LOG_ERROR, - "invalid number format \"%s\"", - num); - return -1; - } else if (!num && (gf_string2bytesize ( - pattern, - &stripe_opt->block_size) - != 0)) { - /* Possible that there is no pattern given */ - stripe_opt->block_size = (128 * GF_UNIT_KB); - pattern = "*"; - } - memcpy (stripe_opt->path_pattern, - pattern, strlen (pattern)); - - gf_log (this->name, GF_LOG_DEBUG, - "block-size : pattern %s : size %"PRId64, - stripe_opt->path_pattern, - stripe_opt->block_size); - - if (!priv->pattern) { - priv->pattern = stripe_opt; - } else { - temp_stripeopt = priv->pattern; - while (temp_stripeopt->next) - temp_stripeopt = temp_stripeopt->next; - temp_stripeopt->next = stripe_opt; - } - stripe_str = strtok_r (NULL, ",", &tmp_str); - } - } + for (i = 0; i < priv->child_count; i++) { + sprintf (key, "subvolumes[%d]", i); + gf_proc_dump_write (key, "%s.%s", priv->xl_array[i]->type, + priv->xl_array[i]->name); + } - priv->xattr_supported = 1; - data = dict_get (this->options, "use-xattr"); - if (data) { - if (gf_string2boolean (data->data, - &priv->xattr_supported) == -1) { - gf_log (this->name, GF_LOG_ERROR, - "error setting hard check for extended " - "attribute"); - //return -1; - } - } + options = priv->pattern; + while (options != NULL) { + gf_proc_dump_write ("path_pattern", "%s", priv->pattern->path_pattern); + gf_proc_dump_write ("options_block_size", "%ul", options->block_size); - /* notify related */ - priv->nodes_down = priv->child_count; - this->private = priv; + options = options->next; + } - return 0; -} + gf_proc_dump_write ("block_size", "%ul", priv->block_size); + gf_proc_dump_write ("nodes-down", "%d", priv->nodes_down); + gf_proc_dump_write ("first-child_down", "%d", priv->first_child_down); + gf_proc_dump_write ("xattr_supported", "%d", priv->xattr_supported); -/** - * fini - Free all the private variables - * @this - - */ -void -fini (xlator_t *this) -{ - stripe_private_t *priv = this->private; - struct stripe_options *prev = NULL; - struct stripe_options *trav = priv->pattern; - while (trav) { - prev = trav; - trav = trav->next; - FREE (prev); - } - FREE (priv->xl_array); - LOCK_DESTROY (&priv->lock); - FREE (priv); - return; -} + UNLOCK (&priv->lock); +out: + return ret; +} struct xlator_fops fops = { - .stat = stripe_stat, - .unlink = stripe_unlink, - .symlink = stripe_symlink, - .rename = stripe_rename, - .link = stripe_link, - .chmod = stripe_chmod, - .chown = stripe_chown, - .truncate = stripe_truncate, - .utimens = stripe_utimens, - .create = stripe_create, - .open = stripe_open, - .readv = stripe_readv, - .writev = stripe_writev, - .statfs = stripe_statfs, - .flush = stripe_flush, - .fsync = stripe_fsync, - .setxattr = stripe_setxattr, - .getxattr = stripe_getxattr, - .removexattr = stripe_removexattr, - .access = stripe_access, - .ftruncate = stripe_ftruncate, - .fstat = stripe_fstat, - .readlink = stripe_readlink, - .mkdir = stripe_mkdir, - .rmdir = stripe_rmdir, - .lk = stripe_lk, - .opendir = stripe_opendir, - .fsyncdir = stripe_fsyncdir, - .fchmod = stripe_fchmod, - .fchown = stripe_fchown, - .lookup = stripe_lookup, - .setdents = stripe_setdents, - .mknod = stripe_mknod, -}; - -struct xlator_mops mops = { - .stats = stripe_stats, + .stat = stripe_stat, + .unlink = stripe_unlink, + .rename = stripe_rename, + .link = stripe_link, + .truncate = stripe_truncate, + .create = stripe_create, + .open = stripe_open, + .readv = stripe_readv, + .writev = stripe_writev, + .statfs = stripe_statfs, + .flush = stripe_flush, + .fsync = stripe_fsync, + .ftruncate = stripe_ftruncate, + .fstat = stripe_fstat, + .mkdir = stripe_mkdir, + .rmdir = stripe_rmdir, + .lk = stripe_lk, + .opendir = stripe_opendir, + .fsyncdir = stripe_fsyncdir, + .setattr = stripe_setattr, + .fsetattr = stripe_fsetattr, + .lookup = stripe_lookup, + .mknod = stripe_mknod, + .setxattr = stripe_setxattr, + .fsetxattr = stripe_fsetxattr, + .getxattr = stripe_getxattr, + .fgetxattr = stripe_fgetxattr, + .removexattr = stripe_removexattr, + .fremovexattr = stripe_fremovexattr, + .readdirp = stripe_readdirp, + .fallocate = stripe_fallocate, + .discard = stripe_discard, + .zerofill = stripe_zerofill, }; struct xlator_cbks cbks = { - .release = stripe_release, - .releasedir = stripe_releasedir + .release = stripe_release, + .forget = stripe_forget, }; +struct xlator_dumpops dumpops = { + .priv = stripe_priv_dump, +}; struct volume_options options[] = { - { .key = {"block-size"}, - .type = GF_OPTION_TYPE_ANY - }, - { .key = {"use-xattr"}, - .type = GF_OPTION_TYPE_BOOL + { .key = {"block-size"}, + .type = GF_OPTION_TYPE_SIZE_LIST, + .default_value = "128KB", + .min = STRIPE_MIN_BLOCK_SIZE, + .description = "Size of the stripe unit that would be read " + "from or written to the striped servers." + }, + { .key = {"use-xattr"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "true" + }, + { .key = {"coalesce"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "true", + .description = "Enable/Disable coalesce mode to flatten striped " + "files as stored on the server (i.e., eliminate holes " + "caused by the traditional format)." }, - { .key = {NULL} }, + { .key = {NULL} }, }; diff --git a/xlators/cluster/stripe/src/stripe.h b/xlators/cluster/stripe/src/stripe.h new file mode 100644 index 000000000..5673d18f3 --- /dev/null +++ b/xlators/cluster/stripe/src/stripe.h @@ -0,0 +1,288 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + + +#ifndef _STRIPE_H_ +#define _STRIPE_H_ + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "xlator.h" +#include "logging.h" +#include "defaults.h" +#include "common-utils.h" +#include "compat.h" +#include "compat-errno.h" +#include "stripe-mem-types.h" +#include "libxlator.h" +#include <fnmatch.h> +#include <signal.h> + +#define STRIPE_PATHINFO_HEADER "STRIPE:" +#define STRIPE_MIN_BLOCK_SIZE (16*GF_UNIT_KB) + +#define STRIPE_STACK_UNWIND(fop, frame, params ...) do { \ + stripe_local_t *__local = NULL; \ + if (frame) { \ + __local = frame->local; \ + frame->local = NULL; \ + } \ + STACK_UNWIND_STRICT (fop, frame, params); \ + if (__local) { \ + stripe_local_wipe(__local); \ + mem_put (__local); \ + } \ + } while (0) + +#define STRIPE_STACK_DESTROY(frame) do { \ + stripe_local_t *__local = NULL; \ + __local = frame->local; \ + frame->local = NULL; \ + STACK_DESTROY (frame->root); \ + if (__local) { \ + stripe_local_wipe (__local); \ + mem_put (__local); \ + } \ + } while (0) + +#define STRIPE_VALIDATE_FCTX(fctx, label) do { \ + int idx = 0; \ + if (!fctx) { \ + op_errno = EINVAL; \ + goto label; \ + } \ + for (idx = 0; idx < fctx->stripe_count; idx++) { \ + if (!fctx->xl_array[idx]) { \ + gf_log (this->name, GF_LOG_ERROR, \ + "fctx->xl_array[%d] is NULL", \ + idx); \ + op_errno = ESTALE; \ + goto label; \ + } \ + } \ + } while (0) + +typedef struct stripe_xattr_sort { + int pos; + int xattr_len; + char *xattr_value; +} stripe_xattr_sort_t; + +/** + * struct stripe_options : This keeps the pattern and the block-size + * information, which is used for striping on a file. + */ +struct stripe_options { + struct stripe_options *next; + char path_pattern[256]; + uint64_t block_size; +}; + +/** + * Private structure for stripe translator + */ +struct stripe_private { + struct stripe_options *pattern; + xlator_t **xl_array; + uint64_t block_size; + gf_lock_t lock; + uint8_t nodes_down; + int8_t first_child_down; + int *last_event; + int8_t child_count; + gf_boolean_t xattr_supported; /* default yes */ + gf_boolean_t coalesce; + char vol_uuid[UUID_SIZE + 1]; +}; + +/** + * Used to keep info about the replies received from readv/writev calls + */ +struct stripe_replies { + struct iovec *vector; + int32_t count; //count of vector + int32_t op_ret; //op_ret of readv + int32_t op_errno; + int32_t requested_size; + struct iatt stbuf; /* 'stbuf' is also a part of reply */ +}; + +typedef struct _stripe_fd_ctx { + off_t stripe_size; + int stripe_count; + int stripe_coalesce; + int static_array; + xlator_t **xl_array; +} stripe_fd_ctx_t; + + +/** + * Local structure to be passed with all the frames in case of STACK_WIND + */ +struct stripe_local; /* this itself is used inside the structure; */ + +struct stripe_local { + struct stripe_local *next; + call_frame_t *orig_frame; + + stripe_fd_ctx_t *fctx; + + /* Used by _cbk functions */ + struct iatt stbuf; + struct iatt pre_buf; + struct iatt post_buf; + struct iatt preparent; + struct iatt postparent; + + off_t stbuf_size; + off_t prebuf_size; + off_t postbuf_size; + off_t preparent_size; + off_t postparent_size; + + blkcnt_t stbuf_blocks; + blkcnt_t prebuf_blocks; + blkcnt_t postbuf_blocks; + blkcnt_t preparent_blocks; + blkcnt_t postparent_blocks; + + struct stripe_replies *replies; + struct statvfs statvfs_buf; + dir_entry_t *entry; + + int8_t revalidate; + int8_t failed; + int8_t unwind; + + size_t readv_size; + int32_t entry_count; + int32_t node_index; + int32_t call_count; + int32_t wind_count; /* used instead of child_cound + in case of read and write */ + int32_t op_ret; + int32_t op_errno; + int32_t count; + int32_t flags; + char *name; + inode_t *inode; + + loc_t loc; + loc_t loc2; + + mode_t mode; + dev_t rdev; + /* For File I/O fops */ + dict_t *xdata; + + stripe_xattr_sort_t *xattr_list; + int32_t xattr_total_len; + int32_t nallocs; + char xsel[256]; + + struct marker_str marker; + + /* General usage */ + off_t offset; + off_t stripe_size; + + int xattr_self_heal_needed; + int entry_self_heal_needed; + + int8_t *list; + struct gf_flock lock; + fd_t *fd; + void *value; + struct iobref *iobref; + gf_dirent_t entries; + gf_dirent_t *dirent; + dict_t *xattr; + uuid_t ia_gfid; + + int xflag; + mode_t umask; +}; + +typedef struct stripe_local stripe_local_t; +typedef struct stripe_private stripe_private_t; + +/* + * Determine the stripe index of a particular frame based on the translator. + */ +static inline int32_t stripe_get_frame_index(stripe_fd_ctx_t *fctx, + call_frame_t *prev) +{ + int32_t i, idx = -1; + + for (i = 0; i < fctx->stripe_count; i++) { + if (fctx->xl_array[i] == prev->this) { + idx = i; + break; + } + } + + return idx; +} + +static inline void stripe_copy_xl_array(xlator_t **dst, xlator_t **src, + int count) +{ + int i; + + for (i = 0; i < count; i++) + dst[i] = src[i]; +} + +void stripe_local_wipe (stripe_local_t *local); +int32_t stripe_ctx_handle (xlator_t *this, call_frame_t *prev, + stripe_local_t *local, dict_t *dict); +void stripe_aggregate_xattr (dict_t *dst, dict_t *src); +int32_t stripe_xattr_request_build (xlator_t *this, dict_t *dict, + uint64_t stripe_size, uint32_t stripe_count, + uint32_t stripe_index, + uint32_t stripe_coalesce); +int32_t stripe_get_matching_bs (const char *path, stripe_private_t *priv); +int set_stripe_block_size (xlator_t *this, stripe_private_t *priv, char *data); +int32_t stripe_iatt_merge (struct iatt *from, struct iatt *to); +int32_t stripe_fill_pathinfo_xattr (xlator_t *this, stripe_local_t *local, + char **xattr_serz); +int32_t stripe_free_xattr_str (stripe_local_t *local); +int32_t stripe_xattr_aggregate (char *buffer, stripe_local_t *local, + int32_t *total); +off_t coalesced_offset(off_t offset, uint64_t stripe_size, int stripe_count); +off_t uncoalesced_size(off_t size, uint64_t stripe_size, int stripe_count, + int stripe_index); +int32_t +stripe_fill_lockinfo_xattr (xlator_t *this, stripe_local_t *local, + void **xattr_serz); + +/* + * Adjust the size attribute for files if coalesce is enabled. + */ +static inline void correct_file_size(struct iatt *buf, stripe_fd_ctx_t *fctx, + call_frame_t *prev) +{ + int index; + + if (!IA_ISREG(buf->ia_type)) + return; + + if (!fctx || !fctx->stripe_coalesce) + return; + + index = stripe_get_frame_index(fctx, prev); + buf->ia_size = uncoalesced_size(buf->ia_size, fctx->stripe_size, + fctx->stripe_count, index); +} + +#endif /* _STRIPE_H_ */ diff --git a/xlators/cluster/unify/Makefile.am b/xlators/cluster/unify/Makefile.am deleted file mode 100644 index d471a3f92..000000000 --- a/xlators/cluster/unify/Makefile.am +++ /dev/null @@ -1,3 +0,0 @@ -SUBDIRS = src - -CLEANFILES = diff --git a/xlators/cluster/unify/src/Makefile.am b/xlators/cluster/unify/src/Makefile.am deleted file mode 100644 index b9e6f63e9..000000000 --- a/xlators/cluster/unify/src/Makefile.am +++ /dev/null @@ -1,16 +0,0 @@ - -xlator_LTLIBRARIES = unify.la -xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/cluster - -unify_la_LDFLAGS = -module -avoidversion - -unify_la_SOURCES = unify.c unify-self-heal.c -unify_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la - -noinst_HEADERS = unify.h - -AM_CFLAGS = -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -Wall -D$(GF_HOST_OS) \ - -I$(top_srcdir)/libglusterfs/src -shared -nostartfiles $(GF_CFLAGS) - -CLEANFILES = - diff --git a/xlators/cluster/unify/src/unify-self-heal.c b/xlators/cluster/unify/src/unify-self-heal.c deleted file mode 100644 index 4e788fc7a..000000000 --- a/xlators/cluster/unify/src/unify-self-heal.c +++ /dev/null @@ -1,1225 +0,0 @@ -/* - Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. -*/ - -/** - * unify-self-heal.c : - * This file implements few functions which enables 'unify' translator - * to be consistent in its behaviour when - * > a node fails, - * > a node gets added, - * > a failed node comes back - * > a new namespace server is added (ie, an fresh namespace server). - * - * This functionality of 'unify' will enable glusterfs to support storage - * system failure, and maintain consistancy. This works both ways, ie, when - * an entry (either file or directory) is found on namespace server, and not - * on storage nodes, its created in storage nodes and vica-versa. - * - * The two fops, where it can be implemented are 'getdents ()' and 'lookup ()' - * - */ - -#ifndef _CONFIG_H -#define _CONFIG_H -#include "config.h" -#endif - -#include "glusterfs.h" -#include "unify.h" -#include "dict.h" -#include "xlator.h" -#include "hashfn.h" -#include "logging.h" -#include "stack.h" -#include "common-utils.h" - -int32_t -unify_sh_getdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dir_entry_t *entry, - int32_t count); - -int32_t -unify_sh_ns_getdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dir_entry_t *entry, - int32_t count); - -int32_t -unify_bgsh_getdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dir_entry_t *entry, - int32_t count); - -int32_t -unify_bgsh_ns_getdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dir_entry_t *entry, - int32_t count); - -/** - * unify_local_wipe - free all the extra allocation of local->* here. - */ -static void -unify_local_wipe (unify_local_t *local) -{ - /* Free the strdup'd variables in the local structure */ - if (local->name) { - FREE (local->name); - } - - if (local->sh_struct) { - if (local->sh_struct->offset_list) - FREE (local->sh_struct->offset_list); - - if (local->sh_struct->entry_list) - FREE (local->sh_struct->entry_list); - - if (local->sh_struct->count_list) - FREE (local->sh_struct->count_list); - - FREE (local->sh_struct); - } - - loc_wipe (&local->loc1); - loc_wipe (&local->loc2); -} - -int32_t -unify_sh_setdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int32_t callcnt = -1; - unify_local_t *local = frame->local; - inode_t *inode = NULL; - dict_t *tmp_dict = NULL; - dir_entry_t *prev, *entry, *trav; - - LOCK (&frame->lock); - { - /* if local->call_count == 0, that means, setdents on - * storagenodes is still pending. - */ - if (local->call_count) - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - - if (callcnt == 0) { - if (local->sh_struct->entry_list[0]) { - prev = entry = local->sh_struct->entry_list[0]; - if (!entry) - return 0; - trav = entry->next; - while (trav) { - prev->next = trav->next; - FREE (trav->name); - if (S_ISLNK (trav->buf.st_mode)) - FREE (trav->link); - FREE (trav); - trav = prev->next; - } - FREE (entry); - } - - if (!local->flags) { - if (local->sh_struct->count_list[0] >= - UNIFY_SELF_HEAL_GETDENTS_COUNT) { - /* count == size, that means, there are more entries - to read from */ - //local->call_count = 0; - local->sh_struct->offset_list[0] += - UNIFY_SELF_HEAL_GETDENTS_COUNT; - STACK_WIND (frame, - unify_sh_ns_getdents_cbk, - NS(this), - NS(this)->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - local->sh_struct->offset_list[0], - GF_GET_DIR_ONLY); - } - } else { - inode = local->loc1.inode; - fd_unref (local->fd); - tmp_dict = local->dict; - - unify_local_wipe (local); - - STACK_UNWIND (frame, local->op_ret, local->op_errno, - inode, &local->stbuf, local->dict); - if (tmp_dict) - dict_unref (tmp_dict); - } - } - - return 0; -} - - -int32_t -unify_sh_ns_getdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dir_entry_t *entry, - int32_t count) -{ - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - long index = 0; - unsigned long final = 0; - dir_entry_t *tmp = CALLOC (1, sizeof (dir_entry_t)); - - local->sh_struct->entry_list[0] = tmp; - local->sh_struct->count_list[0] = count; - if (entry) { - tmp->next = entry->next; - entry->next = NULL; - } - - if ((count < UNIFY_SELF_HEAL_GETDENTS_COUNT) || !entry) { - final = 1; - } - - LOCK (&frame->lock); - { - /* local->call_count will be '0' till now. make it 1 so, it - can be UNWIND'ed for the last call. */ - local->call_count = priv->child_count; - if (final) - local->flags = 1; - } - UNLOCK (&frame->lock); - - for (index = 0; index < priv->child_count; index++) - { - STACK_WIND_COOKIE (frame, - unify_sh_setdents_cbk, - (void *)index, - priv->xl_array[index], - priv->xl_array[index]->fops->setdents, - local->fd, GF_SET_DIR_ONLY, - local->sh_struct->entry_list[0], count); - } - - return 0; -} - -int32_t -unify_sh_ns_setdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int32_t callcnt = -1; - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - long index = (long)cookie; - dir_entry_t *prev, *entry, *trav; - - LOCK (&frame->lock); - { - if (local->sh_struct->entry_list[index]) { - prev = entry = local->sh_struct->entry_list[index]; - trav = entry->next; - while (trav) { - prev->next = trav->next; - FREE (trav->name); - if (S_ISLNK (trav->buf.st_mode)) - FREE (trav->link); - FREE (trav); - trav = prev->next; - } - FREE (entry); - } - } - UNLOCK (&frame->lock); - - if (local->sh_struct->count_list[index] < - UNIFY_SELF_HEAL_GETDENTS_COUNT) { - LOCK (&frame->lock); - { - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - } else { - /* count == size, that means, there are more entries - to read from */ - local->sh_struct->offset_list[index] += - UNIFY_SELF_HEAL_GETDENTS_COUNT; - STACK_WIND_COOKIE (frame, - unify_sh_getdents_cbk, - cookie, - priv->xl_array[index], - priv->xl_array[index]->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - local->sh_struct->offset_list[index], - GF_GET_ALL); - - gf_log (this->name, GF_LOG_DEBUG, - "readdir on (%s) with offset %"PRId64"", - priv->xl_array[index]->name, - local->sh_struct->offset_list[index]); - } - - if (!callcnt) { - /* All storage nodes have done unified setdents on NS node. - * Now, do getdents from NS and do setdents on storage nodes. - */ - - /* sh_struct->offset_list is no longer required for - storage nodes now */ - local->sh_struct->offset_list[0] = 0; /* reset */ - - STACK_WIND (frame, - unify_sh_ns_getdents_cbk, - NS(this), - NS(this)->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - 0, /* In this call, do send '0' as offset */ - GF_GET_DIR_ONLY); - } - - return 0; -} - - -/** - * unify_sh_getdents_cbk - - */ -int32_t -unify_sh_getdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dir_entry_t *entry, - int32_t count) -{ - int32_t callcnt = -1; - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - long index = (long)cookie; - dir_entry_t *tmp = NULL; - - if (op_ret >= 0 && count > 0) { - /* There is some dentry found, just send the dentry to NS */ - tmp = CALLOC (1, sizeof (dir_entry_t)); - local->sh_struct->entry_list[index] = tmp; - local->sh_struct->count_list[index] = count; - if (entry) { - tmp->next = entry->next; - entry->next = NULL; - } - STACK_WIND_COOKIE (frame, - unify_sh_ns_setdents_cbk, - cookie, - NS(this), - NS(this)->fops->setdents, - local->fd, - GF_SET_IF_NOT_PRESENT, - local->sh_struct->entry_list[index], - count); - return 0; - } - - if (count < UNIFY_SELF_HEAL_GETDENTS_COUNT) { - LOCK (&frame->lock); - { - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - } else { - /* count == size, that means, there are more entries - to read from */ - local->sh_struct->offset_list[index] += - UNIFY_SELF_HEAL_GETDENTS_COUNT; - STACK_WIND_COOKIE (frame, - unify_sh_getdents_cbk, - cookie, - priv->xl_array[index], - priv->xl_array[index]->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - local->sh_struct->offset_list[index], - GF_GET_ALL); - - gf_log (this->name, GF_LOG_DEBUG, - "readdir on (%s) with offset %"PRId64"", - priv->xl_array[index]->name, - local->sh_struct->offset_list[index]); - } - - if (!callcnt) { - /* All storage nodes have done unified setdents on NS node. - * Now, do getdents from NS and do setdents on storage nodes. - */ - - /* sh_struct->offset_list is no longer required for - storage nodes now */ - local->sh_struct->offset_list[0] = 0; /* reset */ - - STACK_WIND (frame, - unify_sh_ns_getdents_cbk, - NS(this), - NS(this)->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - 0, /* In this call, do send '0' as offset */ - GF_GET_DIR_ONLY); - } - - return 0; -} - -/** - * unify_sh_opendir_cbk - - * - * @cookie: - */ -int32_t -unify_sh_opendir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd) -{ - int32_t callcnt = 0; - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - int16_t index = 0; - inode_t *inode = NULL; - dict_t *tmp_dict = NULL; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret >= 0) { - local->op_ret = op_ret; - } else { - gf_log (this->name, GF_LOG_WARNING, "failed"); - local->failed = 1; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - local->call_count = priv->child_count + 1; - - if (!local->failed) { - /* send getdents() namespace after finishing - storage nodes */ - local->call_count--; - - fd_bind (fd); - - if (local->call_count) { - /* Used as the offset index. This list keeps - * track of offset sent to each node during - * STACK_WIND. - */ - local->sh_struct->offset_list = - calloc (priv->child_count, - sizeof (off_t)); - ERR_ABORT (local->sh_struct->offset_list); - - local->sh_struct->entry_list = - calloc (priv->child_count, - sizeof (dir_entry_t *)); - ERR_ABORT (local->sh_struct->entry_list); - - local->sh_struct->count_list = - calloc (priv->child_count, - sizeof (int)); - ERR_ABORT (local->sh_struct->count_list); - - /* Send getdents on all the fds */ - for (index = 0; - index < priv->child_count; index++) { - STACK_WIND_COOKIE (frame, - unify_sh_getdents_cbk, - (void *)(long)index, - priv->xl_array[index], - priv->xl_array[index]->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - 0, /* In this call, do send '0' as offset */ - GF_GET_ALL); - } - - /* did stack wind, so no need to unwind here */ - return 0; - } /* (local->call_count) */ - } /* (!local->failed) */ - - /* Opendir failed on one node. */ - inode = local->loc1.inode; - fd_unref (local->fd); - tmp_dict = local->dict; - - unify_local_wipe (local); - /* Only 'self-heal' failed, lookup() was successful. */ - local->op_ret = 0; - - /* This is lookup_cbk ()'s UNWIND. */ - STACK_UNWIND (frame, local->op_ret, local->op_errno, inode, - &local->stbuf, local->dict); - if (tmp_dict) - dict_unref (tmp_dict); - } - - return 0; -} - -/** - * gf_sh_checksum_cbk - - * - * @frame: frame used in lookup. get a copy of it, and use that copy. - * @this: pointer to unify xlator. - * @inode: pointer to inode, for which the consistency check is required. - * - */ -int32_t -unify_sh_checksum_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - uint8_t *file_checksum, - uint8_t *dir_checksum) -{ - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - int16_t index = 0; - int32_t callcnt = 0; - inode_t *inode = NULL; - dict_t *tmp_dict = NULL; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret >= 0) { - if (NS(this) == (xlator_t *)cookie) { - memcpy (local->sh_struct->ns_file_checksum, - file_checksum, ZR_FILENAME_MAX); - memcpy (local->sh_struct->ns_dir_checksum, - dir_checksum, ZR_FILENAME_MAX); - } else { - if (local->entry_count == 0) { - /* Initialize the dir_checksum to be - * used for comparision with other - * storage nodes. Should be done for - * the first successful call *only*. - */ - /* Using 'entry_count' as a flag */ - local->entry_count = 1; - memcpy (local->sh_struct->dir_checksum, - dir_checksum, ZR_FILENAME_MAX); - } - - /* Reply from the storage nodes */ - for (index = 0; - index < ZR_FILENAME_MAX; index++) { - /* Files should be present in - only one node */ - local->sh_struct->file_checksum[index] ^= file_checksum[index]; - - /* directory structure should be - same accross */ - if (local->sh_struct->dir_checksum[index] != dir_checksum[index]) - local->failed = 1; - } - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - for (index = 0; index < ZR_FILENAME_MAX ; index++) { - if (local->sh_struct->file_checksum[index] != - local->sh_struct->ns_file_checksum[index]) { - local->failed = 1; - break; - } - if (local->sh_struct->dir_checksum[index] != - local->sh_struct->ns_dir_checksum[index]) { - local->failed = 1; - break; - } - } - - if (local->failed) { - /* Log it, it should be a rare event */ - gf_log (this->name, GF_LOG_WARNING, - "Self-heal triggered on directory %s", - local->loc1.path); - - /* Any self heal will be done at directory level */ - local->call_count = 0; - local->op_ret = -1; - local->failed = 0; - - local->fd = fd_create (local->loc1.inode, - frame->root->pid); - - local->call_count = priv->child_count + 1; - - for (index = 0; - index < (priv->child_count + 1); index++) { - STACK_WIND_COOKIE (frame, - unify_sh_opendir_cbk, - priv->xl_array[index]->name, - priv->xl_array[index], - priv->xl_array[index]->fops->opendir, - &local->loc1, - local->fd); - } - /* opendir can be done on the directory */ - return 0; - } - - /* no mismatch */ - inode = local->loc1.inode; - tmp_dict = local->dict; - - unify_local_wipe (local); - - /* This is lookup_cbk ()'s UNWIND. */ - STACK_UNWIND (frame, - local->op_ret, - local->op_errno, - inode, - &local->stbuf, - local->dict); - if (tmp_dict) - dict_unref (tmp_dict); - } - - return 0; -} - -/* Foreground self-heal part over */ - -/* Background self-heal part */ - -int32_t -unify_bgsh_setdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int32_t callcnt = -1; - unify_local_t *local = frame->local; - dir_entry_t *prev, *entry, *trav; - - LOCK (&frame->lock); - { - /* if local->call_count == 0, that means, setdents - on storagenodes is still pending. */ - if (local->call_count) - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - - - if (callcnt == 0) { - if (local->sh_struct->entry_list[0]) { - prev = entry = local->sh_struct->entry_list[0]; - trav = entry->next; - while (trav) { - prev->next = trav->next; - FREE (trav->name); - if (S_ISLNK (trav->buf.st_mode)) - FREE (trav->link); - FREE (trav); - trav = prev->next; - } - FREE (entry); - } - - if (!local->flags) { - if (local->sh_struct->count_list[0] >= - UNIFY_SELF_HEAL_GETDENTS_COUNT) { - /* count == size, that means, there are more - entries to read from */ - //local->call_count = 0; - local->sh_struct->offset_list[0] += - UNIFY_SELF_HEAL_GETDENTS_COUNT; - STACK_WIND (frame, - unify_bgsh_ns_getdents_cbk, - NS(this), - NS(this)->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - local->sh_struct->offset_list[0], - GF_GET_DIR_ONLY); - } - } else { - fd_unref (local->fd); - unify_local_wipe (local); - STACK_DESTROY (frame->root); - } - } - - return 0; -} - - -int32_t -unify_bgsh_ns_getdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dir_entry_t *entry, - int32_t count) -{ - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - long index = 0; - unsigned long final = 0; - dir_entry_t *tmp = CALLOC (1, sizeof (dir_entry_t)); - - local->sh_struct->entry_list[0] = tmp; - local->sh_struct->count_list[0] = count; - if (entry) { - tmp->next = entry->next; - entry->next = NULL; - } - - if ((count < UNIFY_SELF_HEAL_GETDENTS_COUNT) || !entry) { - final = 1; - } - - LOCK (&frame->lock); - { - /* local->call_count will be '0' till now. make it 1 so, - it can be UNWIND'ed for the last call. */ - local->call_count = priv->child_count; - if (final) - local->flags = 1; - } - UNLOCK (&frame->lock); - - for (index = 0; index < priv->child_count; index++) - { - STACK_WIND_COOKIE (frame, - unify_bgsh_setdents_cbk, - (void *)index, - priv->xl_array[index], - priv->xl_array[index]->fops->setdents, - local->fd, GF_SET_DIR_ONLY, - local->sh_struct->entry_list[0], count); - } - - return 0; -} - -int32_t -unify_bgsh_ns_setdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int32_t callcnt = -1; - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - long index = (long)cookie; - dir_entry_t *prev, *entry, *trav; - - if (local->sh_struct->entry_list[index]) { - prev = entry = local->sh_struct->entry_list[index]; - if (!entry) - return 0; - trav = entry->next; - while (trav) { - prev->next = trav->next; - FREE (trav->name); - if (S_ISLNK (trav->buf.st_mode)) - FREE (trav->link); - FREE (trav); - trav = prev->next; - } - FREE (entry); - } - - if (local->sh_struct->count_list[index] < - UNIFY_SELF_HEAL_GETDENTS_COUNT) { - LOCK (&frame->lock); - { - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - } else { - /* count == size, that means, there are more entries - to read from */ - local->sh_struct->offset_list[index] += - UNIFY_SELF_HEAL_GETDENTS_COUNT; - STACK_WIND_COOKIE (frame, - unify_bgsh_getdents_cbk, - cookie, - priv->xl_array[index], - priv->xl_array[index]->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - local->sh_struct->offset_list[index], - GF_GET_ALL); - - gf_log (this->name, GF_LOG_DEBUG, - "readdir on (%s) with offset %"PRId64"", - priv->xl_array[index]->name, - local->sh_struct->offset_list[index]); - } - - if (!callcnt) { - /* All storage nodes have done unified setdents on NS node. - * Now, do getdents from NS and do setdents on storage nodes. - */ - - /* sh_struct->offset_list is no longer required for - storage nodes now */ - local->sh_struct->offset_list[0] = 0; /* reset */ - - STACK_WIND (frame, - unify_bgsh_ns_getdents_cbk, - NS(this), - NS(this)->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - 0, /* In this call, do send '0' as offset */ - GF_GET_DIR_ONLY); - } - - return 0; -} - - -/** - * unify_bgsh_getdents_cbk - - */ -int32_t -unify_bgsh_getdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dir_entry_t *entry, - int32_t count) -{ - int32_t callcnt = -1; - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - long index = (long)cookie; - dir_entry_t *tmp = NULL; - - if (op_ret >= 0 && count > 0) { - /* There is some dentry found, just send the dentry to NS */ - tmp = CALLOC (1, sizeof (dir_entry_t)); - local->sh_struct->entry_list[index] = tmp; - local->sh_struct->count_list[index] = count; - if (entry) { - tmp->next = entry->next; - entry->next = NULL; - } - STACK_WIND_COOKIE (frame, - unify_bgsh_ns_setdents_cbk, - cookie, - NS(this), - NS(this)->fops->setdents, - local->fd, - GF_SET_IF_NOT_PRESENT, - local->sh_struct->entry_list[index], - count); - return 0; - } - - if (count < UNIFY_SELF_HEAL_GETDENTS_COUNT) { - LOCK (&frame->lock); - { - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - } else { - /* count == size, that means, there are more entries to read from */ - local->sh_struct->offset_list[index] += - UNIFY_SELF_HEAL_GETDENTS_COUNT; - - STACK_WIND_COOKIE (frame, - unify_bgsh_getdents_cbk, - cookie, - priv->xl_array[index], - priv->xl_array[index]->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - local->sh_struct->offset_list[index], - GF_GET_ALL); - - gf_log (this->name, GF_LOG_DEBUG, - "readdir on (%s) with offset %"PRId64"", - priv->xl_array[index]->name, - local->sh_struct->offset_list[index]); - } - - if (!callcnt) { - /* All storage nodes have done unified setdents on NS node. - * Now, do getdents from NS and do setdents on storage nodes. - */ - - /* sh_struct->offset_list is no longer required for - storage nodes now */ - local->sh_struct->offset_list[0] = 0; /* reset */ - - STACK_WIND (frame, - unify_bgsh_ns_getdents_cbk, - NS(this), - NS(this)->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - 0, /* In this call, do send '0' as offset */ - GF_GET_DIR_ONLY); - } - - return 0; -} - -/** - * unify_bgsh_opendir_cbk - - * - * @cookie: - */ -int32_t -unify_bgsh_opendir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd) -{ - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - int32_t callcnt = 0; - int16_t index = 0; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret >= 0) { - local->op_ret = op_ret; - } else { - local->failed = 1; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - local->call_count = priv->child_count + 1; - - if (!local->failed) { - /* send getdents() namespace after finishing - storage nodes */ - local->call_count--; - callcnt = local->call_count; - - fd_bind (fd); - - if (local->call_count) { - /* Used as the offset index. This list keeps - track of offset sent to each node during - STACK_WIND. */ - local->sh_struct->offset_list = - calloc (priv->child_count, - sizeof (off_t)); - ERR_ABORT (local->sh_struct->offset_list); - - local->sh_struct->entry_list = - calloc (priv->child_count, - sizeof (dir_entry_t *)); - ERR_ABORT (local->sh_struct->entry_list); - - local->sh_struct->count_list = - calloc (priv->child_count, - sizeof (int)); - ERR_ABORT (local->sh_struct->count_list); - - /* Send getdents on all the fds */ - for (index = 0; - index < priv->child_count; index++) { - STACK_WIND_COOKIE (frame, - unify_bgsh_getdents_cbk, - (void *)(long)index, - priv->xl_array[index], - priv->xl_array[index]->fops->getdents, - local->fd, - UNIFY_SELF_HEAL_GETDENTS_COUNT, - 0, /* In this call, do send '0' as offset */ - GF_GET_ALL); - } - /* did a stack wind, so no need to unwind here */ - return 0; - } /* (local->call_count) */ - } /* (!local->failed) */ - - /* Opendir failed on one node. */ - fd_unref (local->fd); - - unify_local_wipe (local); - STACK_DESTROY (frame->root); - } - - return 0; -} - -/** - * gf_bgsh_checksum_cbk - - * - * @frame: frame used in lookup. get a copy of it, and use that copy. - * @this: pointer to unify xlator. - * @inode: pointer to inode, for which the consistency check is required. - * - */ -int32_t -unify_bgsh_checksum_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - uint8_t *file_checksum, - uint8_t *dir_checksum) -{ - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - int16_t index = 0; - int32_t callcnt = 0; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret >= 0) { - if (NS(this) == (xlator_t *)cookie) { - memcpy (local->sh_struct->ns_file_checksum, - file_checksum, ZR_FILENAME_MAX); - memcpy (local->sh_struct->ns_dir_checksum, - dir_checksum, ZR_FILENAME_MAX); - } else { - if (local->entry_count == 0) { - /* Initialize the dir_checksum to be - * used for comparision with other - * storage nodes. Should be done for - * the first successful call *only*. - */ - /* Using 'entry_count' as a flag */ - local->entry_count = 1; - memcpy (local->sh_struct->dir_checksum, - dir_checksum, ZR_FILENAME_MAX); - } - - /* Reply from the storage nodes */ - for (index = 0; - index < ZR_FILENAME_MAX; index++) { - /* Files should be present in only - one node */ - local->sh_struct->file_checksum[index] ^= file_checksum[index]; - - /* directory structure should be same - accross */ - if (local->sh_struct->dir_checksum[index] != dir_checksum[index]) - local->failed = 1; - } - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - for (index = 0; index < ZR_FILENAME_MAX ; index++) { - if (local->sh_struct->file_checksum[index] != - local->sh_struct->ns_file_checksum[index]) { - local->failed = 1; - break; - } - if (local->sh_struct->dir_checksum[index] != - local->sh_struct->ns_dir_checksum[index]) { - local->failed = 1; - break; - } - } - - if (local->failed) { - /* Log it, it should be a rare event */ - gf_log (this->name, GF_LOG_WARNING, - "Self-heal triggered on directory %s", - local->loc1.path); - - /* Any self heal will be done at the directory level */ - local->op_ret = -1; - local->failed = 0; - - local->fd = fd_create (local->loc1.inode, - frame->root->pid); - local->call_count = priv->child_count + 1; - - for (index = 0; - index < (priv->child_count + 1); index++) { - STACK_WIND_COOKIE (frame, - unify_bgsh_opendir_cbk, - priv->xl_array[index]->name, - priv->xl_array[index], - priv->xl_array[index]->fops->opendir, - &local->loc1, - local->fd); - } - - /* opendir can be done on the directory */ - return 0; - } - - /* no mismatch */ - unify_local_wipe (local); - STACK_DESTROY (frame->root); - } - - return 0; -} - -/* Background self-heal part over */ - - - - -/** - * zr_unify_self_heal - - * - * @frame: frame used in lookup. get a copy of it, and use that copy. - * @this: pointer to unify xlator. - * @inode: pointer to inode, for which the consistency check is required. - * - */ -int32_t -zr_unify_self_heal (call_frame_t *frame, - xlator_t *this, - unify_local_t *local) -{ - unify_private_t *priv = this->private; - call_frame_t *bg_frame = NULL; - unify_local_t *bg_local = NULL; - inode_t *tmp_inode = NULL; - dict_t *tmp_dict = NULL; - int16_t index = 0; - - if (local->inode_generation < priv->inode_generation) { - /* Any self heal will be done at the directory level */ - /* Update the inode's generation to the current generation - value. */ - local->inode_generation = priv->inode_generation; - inode_ctx_put (local->loc1.inode, this, - (uint64_t)(long)local->inode_generation); - - if (priv->self_heal == ZR_UNIFY_FG_SELF_HEAL) { - local->op_ret = 0; - local->failed = 0; - local->call_count = priv->child_count + 1; - local->sh_struct = - calloc (1, sizeof (struct unify_self_heal_struct)); - - /* +1 is for NS */ - for (index = 0; - index < (priv->child_count + 1); index++) { - STACK_WIND_COOKIE (frame, - unify_sh_checksum_cbk, - priv->xl_array[index], - priv->xl_array[index], - priv->xl_array[index]->fops->checksum, - &local->loc1, - 0); - } - - /* Self-heal in foreground, hence no need - to UNWIND here */ - return 0; - } - - /* Self Heal done in background */ - bg_frame = copy_frame (frame); - INIT_LOCAL (bg_frame, bg_local); - loc_copy (&bg_local->loc1, &local->loc1); - bg_local->op_ret = 0; - bg_local->failed = 0; - bg_local->call_count = priv->child_count + 1; - bg_local->sh_struct = - calloc (1, sizeof (struct unify_self_heal_struct)); - - /* +1 is for NS */ - for (index = 0; index < (priv->child_count + 1); index++) { - STACK_WIND_COOKIE (bg_frame, - unify_bgsh_checksum_cbk, - priv->xl_array[index], - priv->xl_array[index], - priv->xl_array[index]->fops->checksum, - &bg_local->loc1, - 0); - } - } - - /* generation number matches, self heal already done or - * self heal done in background: just do STACK_UNWIND - */ - tmp_inode = local->loc1.inode; - tmp_dict = local->dict; - - unify_local_wipe (local); - - /* This is lookup_cbk ()'s UNWIND. */ - STACK_UNWIND (frame, - local->op_ret, - local->op_errno, - tmp_inode, - &local->stbuf, - local->dict); - - if (tmp_dict) - dict_unref (tmp_dict); - - return 0; -} - diff --git a/xlators/cluster/unify/src/unify.c b/xlators/cluster/unify/src/unify.c deleted file mode 100644 index 610cfd6f6..000000000 --- a/xlators/cluster/unify/src/unify.c +++ /dev/null @@ -1,4506 +0,0 @@ -/* - Copyright (c) 2006-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. -*/ - -/** - * xlators/cluster/unify: - * - This xlator is one of the main translator in GlusterFS, which - * actually does the clustering work of the file system. One need to - * understand that, unify assumes file to be existing in only one of - * the child node, and directories to be present on all the nodes. - * - * NOTE: - * Now, unify has support for global namespace, which is used to keep a - * global view of fs's namespace tree. The stat for directories are taken - * just from the namespace, where as for files, just 'st_ino' is taken from - * Namespace node, and other stat info is taken from the actual storage node. - * Also Namespace node helps to keep consistant inode for files across - * glusterfs (re-)mounts. - */ - -#ifndef _CONFIG_H -#define _CONFIG_H -#include "config.h" -#endif - -#include "glusterfs.h" -#include "unify.h" -#include "dict.h" -#include "xlator.h" -#include "hashfn.h" -#include "logging.h" -#include "stack.h" -#include "defaults.h" -#include "common-utils.h" -#include <signal.h> -#include <libgen.h> -#include "compat-errno.h" -#include "compat.h" - -#define UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR(_loc) do { \ - if (!(_loc && _loc->inode)) { \ - STACK_UNWIND (frame, -1, EINVAL, NULL, NULL, NULL); \ - return 0; \ - } \ -} while(0) - - -#define UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR(_fd) do { \ - if (!(_fd && !fd_ctx_get (_fd, this, NULL))) { \ - STACK_UNWIND (frame, -1, EBADFD, NULL, NULL); \ - return 0; \ - } \ -} while(0) - -#define UNIFY_CHECK_FD_AND_UNWIND_ON_ERR(_fd) do { \ - if (!_fd) { \ - STACK_UNWIND (frame, -1, EBADFD, NULL, NULL); \ - return 0; \ - } \ -} while(0) - -/** - * unify_local_wipe - free all the extra allocation of local->* here. - */ -static void -unify_local_wipe (unify_local_t *local) -{ - /* Free the strdup'd variables in the local structure */ - if (local->name) { - FREE (local->name); - } - loc_wipe (&local->loc1); - loc_wipe (&local->loc2); -} - - - -/* - * unify_normalize_stats - - */ -void -unify_normalize_stats (struct statvfs *buf, - unsigned long bsize, - unsigned long frsize) -{ - double factor; - - if (buf->f_bsize != bsize) { - factor = ((double) buf->f_bsize) / bsize; - buf->f_bsize = bsize; - buf->f_bfree = (fsblkcnt_t) (factor * buf->f_bfree); - buf->f_bavail = (fsblkcnt_t) (factor * buf->f_bavail); - } - - if (buf->f_frsize != frsize) { - factor = ((double) buf->f_frsize) / frsize; - buf->f_frsize = frsize; - buf->f_blocks = (fsblkcnt_t) (factor * buf->f_blocks); - } -} - - -xlator_t * -unify_loc_subvol (loc_t *loc, xlator_t *this) -{ - unify_private_t *priv = NULL; - xlator_t *subvol = NULL; - int16_t *list = NULL; - long index = 0; - xlator_t *subvol_i = NULL; - int ret = 0; - uint64_t tmp_list = 0; - - priv = this->private; - subvol = NS (this); - - if (!S_ISDIR (loc->inode->st_mode)) { - ret = inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - if (!list) - goto out; - - for (index = 0; list[index] != -1; index++) { - subvol_i = priv->xl_array[list[index]]; - if (subvol_i != NS (this)) { - subvol = subvol_i; - break; - } - } - } -out: - return subvol; -} - - - -/** - * unify_statfs_cbk - - */ -int32_t -unify_statfs_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct statvfs *stbuf) -{ - int32_t callcnt = 0; - struct statvfs *dict_buf = NULL; - unsigned long bsize; - unsigned long frsize; - unify_local_t *local = (unify_local_t *)frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - if (op_ret >= 0) { - /* when a call is successfull, add it to local->dict */ - dict_buf = &local->statvfs_buf; - - if (dict_buf->f_bsize != 0) { - bsize = max (dict_buf->f_bsize, - stbuf->f_bsize); - - frsize = max (dict_buf->f_frsize, - stbuf->f_frsize); - unify_normalize_stats(dict_buf, bsize, frsize); - unify_normalize_stats(stbuf, bsize, frsize); - } else { - dict_buf->f_bsize = stbuf->f_bsize; - dict_buf->f_frsize = stbuf->f_frsize; - } - - dict_buf->f_blocks += stbuf->f_blocks; - dict_buf->f_bfree += stbuf->f_bfree; - dict_buf->f_bavail += stbuf->f_bavail; - dict_buf->f_files += stbuf->f_files; - dict_buf->f_ffree += stbuf->f_ffree; - dict_buf->f_favail += stbuf->f_favail; - dict_buf->f_fsid = stbuf->f_fsid; - dict_buf->f_flag = stbuf->f_flag; - dict_buf->f_namemax = stbuf->f_namemax; - local->op_ret = op_ret; - } else { - /* fop on storage node has failed due to some error */ - if (op_errno != ENOTCONN) { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): %s", - prev_frame->this->name, - strerror (op_errno)); - } - local->op_errno = op_errno; - } - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->statvfs_buf); - } - - return 0; -} - -/** - * unify_statfs - - */ -int32_t -unify_statfs (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - unify_local_t *local = NULL; - xlator_list_t *trav = this->children; - - INIT_LOCAL (frame, local); - local->call_count = ((unify_private_t *)this->private)->child_count; - - while(trav) { - STACK_WIND (frame, - unify_statfs_cbk, - trav->xlator, - trav->xlator->fops->statfs, - loc); - trav = trav->next; - } - - return 0; -} - -/** - * unify_buf_cbk - - */ -int32_t -unify_buf_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "%s(): child(%s): path(%s): %s", - gf_fop_list[frame->root->op], - prev_frame->this->name, - (local->loc1.path)?local->loc1.path:"", - strerror (op_errno)); - - local->op_errno = op_errno; - if ((op_errno == ENOENT) && priv->optimist) - local->op_ret = 0; - } - - if (op_ret >= 0) { - local->op_ret = 0; - - if (NS (this) == prev_frame->this) { - local->st_ino = buf->st_ino; - /* If the entry is directory, get the stat - from NS node */ - if (S_ISDIR (buf->st_mode) || - !local->stbuf.st_blksize) { - local->stbuf = *buf; - } - } - - if ((!S_ISDIR (buf->st_mode)) && - (NS (this) != prev_frame->this)) { - /* If file, take the stat info from Storage - node. */ - local->stbuf = *buf; - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - /* If the inode number is not filled, operation should - fail */ - if (!local->st_ino) - local->op_ret = -1; - - local->stbuf.st_ino = local->st_ino; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf); - } - - return 0; -} - -#define check_if_dht_linkfile(s) ((s->st_mode & ~S_IFMT) == S_ISVTX) - -/** - * unify_lookup_cbk - - */ -int32_t -unify_lookup_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf, - dict_t *dict) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - inode_t *tmp_inode = NULL; - dict_t *local_dict = NULL; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - if (local->revalidate && - (op_errno == ESTALE)) { - /* ESTALE takes priority */ - local->op_errno = op_errno; - local->failed = 1; - } - - if ((op_errno != ENOTCONN) - && (op_errno != ENOENT) - && (local->op_errno != ESTALE)) { - /* if local->op_errno is already ESTALE, then - * ESTALE has to propogated to the parent first. - * do not enter here. - */ - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - priv->xl_array[(long)cookie]->name, - local->loc1.path, strerror (op_errno)); - local->op_errno = op_errno; - local->failed = 1; - - } else if (local->revalidate && - (local->op_errno != ESTALE) && - !(priv->optimist && (op_errno == ENOENT))) { - - gf_log (this->name, - (op_errno == ENOTCONN) ? - GF_LOG_DEBUG:GF_LOG_ERROR, - "child(%s): path(%s): %s", - priv->xl_array[(long)cookie]->name, - local->loc1.path, strerror (op_errno)); - local->op_errno = op_errno; - local->failed = 1; - } - } - - if (op_ret == 0) { - local->op_ret = 0; - - if (check_if_dht_linkfile(buf)) { - gf_log (this->name, GF_LOG_CRITICAL, - "file %s may be DHT link file on %s, " - "make sure the backend is not shared " - "between unify and DHT", - local->loc1.path, - priv->xl_array[(long)cookie]->name); - } - - if (local->stbuf.st_mode && local->stbuf.st_blksize) { - /* make sure we already have a stbuf - stored in local->stbuf */ - if (S_ISDIR (local->stbuf.st_mode) && - !S_ISDIR (buf->st_mode)) { - gf_log (this->name, GF_LOG_CRITICAL, - "[CRITICAL] '%s' is directory " - "on namespace, non-directory " - "on node '%s', returning EIO", - local->loc1.path, - priv->xl_array[(long)cookie]->name); - local->return_eio = 1; - } - if (!S_ISDIR (local->stbuf.st_mode) && - S_ISDIR (buf->st_mode)) { - gf_log (this->name, GF_LOG_CRITICAL, - "[CRITICAL] '%s' is directory " - "on node '%s', non-directory " - "on namespace, returning EIO", - local->loc1.path, - priv->xl_array[(long)cookie]->name); - local->return_eio = 1; - } - } - - if (!local->revalidate && !S_ISDIR (buf->st_mode)) { - /* This is the first time lookup on file*/ - if (!local->list) { - /* list is not allocated, allocate - the max possible range */ - local->list = CALLOC (1, 2 * (priv->child_count + 2)); - if (!local->list) { - gf_log (this->name, - GF_LOG_CRITICAL, - "Not enough memory"); - STACK_UNWIND (frame, -1, - ENOMEM, inode, - NULL, NULL); - return 0; - } - } - /* update the index of the list */ - local->list [local->index++] = - (int16_t)(long)cookie; - } - - if (!local->revalidate && S_ISDIR (buf->st_mode)) { - /* fresh lookup of a directory */ - inode_ctx_put (local->loc1.inode, this, - priv->inode_generation); - } - - if ((!local->dict) && dict && - (priv->xl_array[(long)cookie] != NS(this))) { - local->dict = dict_ref (dict); - } - - /* index of NS node is == total child count */ - if (priv->child_count == (int16_t)(long)cookie) { - /* Take the inode number from namespace */ - local->st_ino = buf->st_ino; - if (S_ISDIR (buf->st_mode) || - !(local->stbuf.st_blksize)) { - local->stbuf = *buf; - } - } else if (!S_ISDIR (buf->st_mode)) { - /* If file, then get the stat from - storage node */ - local->stbuf = *buf; - } - - if (local->st_nlink < buf->st_nlink) { - local->st_nlink = buf->st_nlink; - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - local_dict = local->dict; - if (local->return_eio) { - gf_log (this->name, GF_LOG_CRITICAL, - "[CRITICAL] Unable to fix the path (%s) with " - "self-heal, try manual verification. " - "returning EIO.", local->loc1.path); - unify_local_wipe (local); - STACK_UNWIND (frame, -1, EIO, inode, NULL, NULL); - if (local_dict) { - dict_unref (local_dict); - } - return 0; - } - - if (!local->stbuf.st_blksize) { - /* Inode not present */ - local->op_ret = -1; - } else { - if (!local->revalidate && - !S_ISDIR (local->stbuf.st_mode)) { - /* If its a file, big array is useless, - allocate the smaller one */ - int16_t *list = NULL; - list = CALLOC (1, 2 * (local->index + 1)); - ERR_ABORT (list); - memcpy (list, local->list, 2 * local->index); - /* Make the end of the list as -1 */ - FREE (local->list); - local->list = list; - local->list [local->index] = -1; - /* Update the inode's ctx with proper array */ - /* TODO: log on failure */ - inode_ctx_put (local->loc1.inode, this, - (uint64_t)(long)local->list); - } - - if (S_ISDIR(local->loc1.inode->st_mode)) { - /* lookup is done for directory */ - if (local->failed && priv->self_heal) { - /* Triggering self-heal */ - /* means, self-heal required for this - inode */ - local->inode_generation = 0; - priv->inode_generation++; - } - } else { - local->stbuf.st_ino = local->st_ino; - } - - local->stbuf.st_nlink = local->st_nlink; - } - if (local->op_ret == -1) { - if (!local->revalidate && local->list) - FREE (local->list); - } - - if ((local->op_ret >= 0) && local->failed && - local->revalidate) { - /* Done revalidate, but it failed */ - if ((op_errno != ENOTCONN) - && (local->op_errno != ESTALE)) { - gf_log (this->name, GF_LOG_ERROR, - "Revalidate failed for path(%s): %s", - local->loc1.path, strerror (op_errno)); - } - local->op_ret = -1; - } - - if ((priv->self_heal && !priv->optimist) && - (!local->revalidate && (local->op_ret == 0) && - S_ISDIR(local->stbuf.st_mode))) { - /* Let the self heal be done here */ - zr_unify_self_heal (frame, this, local); - local_dict = NULL; - } else { - if (local->failed) { - /* NOTE: directory lookup is sent to all - * subvolumes and success from a subvolume - * might set local->op_ret to 0 (zero) */ - local->op_ret = -1; - } - - /* either no self heal, or op_ret == -1 (failure) */ - tmp_inode = local->loc1.inode; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - tmp_inode, &local->stbuf, local->dict); - } - if (local_dict) { - dict_unref (local_dict); - } - } - - return 0; -} - -/** - * unify_lookup - - */ -int32_t -unify_lookup (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - dict_t *xattr_req) -{ - unify_local_t *local = NULL; - unify_private_t *priv = this->private; - int16_t *list = NULL; - long index = 0; - - if (!(loc && loc->inode)) { - gf_log (this->name, GF_LOG_ERROR, - "%s: Argument not right", loc?loc->path:"(null)"); - STACK_UNWIND (frame, -1, EINVAL, NULL, NULL, NULL); - return 0; - } - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, loc->inode, NULL, NULL); - return 0; - } - - if (inode_ctx_get (loc->inode, this, NULL) - && S_ISDIR (loc->inode->st_mode)) { - local->revalidate = 1; - } - - if (!inode_ctx_get (loc->inode, this, NULL) && - loc->inode->st_mode && - !S_ISDIR (loc->inode->st_mode)) { - uint64_t tmp_list = 0; - /* check if revalidate or fresh lookup */ - inode_ctx_get (loc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - } - - if (local->list) { - list = local->list; - for (index = 0; list[index] != -1; index++); - if (index != 2) { - if (index < 2) { - gf_log (this->name, GF_LOG_ERROR, - "returning ESTALE for %s: file " - "count is %ld", loc->path, index); - /* Print where all the file is present */ - for (index = 0; - local->list[index] != -1; index++) { - gf_log (this->name, GF_LOG_ERROR, - "%s: found on %s", loc->path, - priv->xl_array[list[index]]->name); - } - unify_local_wipe (local); - STACK_UNWIND (frame, -1, ESTALE, - NULL, NULL, NULL); - return 0; - } else { - /* There are more than 2 presences */ - /* Just log and continue */ - gf_log (this->name, GF_LOG_ERROR, - "%s: file count is %ld", - loc->path, index); - /* Print where all the file is present */ - for (index = 0; - local->list[index] != -1; index++) { - gf_log (this->name, GF_LOG_ERROR, - "%s: found on %s", loc->path, - priv->xl_array[list[index]]->name); - } - } - } - - /* is revalidate */ - local->revalidate = 1; - - for (index = 0; list[index] != -1; index++) - local->call_count++; - - for (index = 0; list[index] != -1; index++) { - char need_break = (list[index+1] == -1); - STACK_WIND_COOKIE (frame, - unify_lookup_cbk, - (void *)(long)list[index], //cookie - priv->xl_array [list[index]], - priv->xl_array [list[index]]->fops->lookup, - loc, - xattr_req); - if (need_break) - break; - } - } else { - if (loc->inode->st_mode) { - if (inode_ctx_get (loc->inode, this, NULL)) { - inode_ctx_get (loc->inode, this, - &local->inode_generation); - } - } - /* This is first call, there is no list */ - /* call count should be all child + 1 namespace */ - local->call_count = priv->child_count + 1; - - for (index = 0; index <= priv->child_count; index++) { - STACK_WIND_COOKIE (frame, - unify_lookup_cbk, - (void *)index, //cookie - priv->xl_array[index], - priv->xl_array[index]->fops->lookup, - loc, - xattr_req); - } - } - - return 0; -} - -/** - * unify_stat - if directory, get the stat directly from NameSpace child. - * if file, check for a hint and send it only there (also to NS). - * if its a fresh stat, then do it on all the nodes. - * - * NOTE: for all the call, sending cookie as xlator pointer, which will be - * used in cbk. - */ -int32_t -unify_stat (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - unify_local_t *local = NULL; - unify_private_t *priv = this->private; - int16_t index = 0; - int16_t *list = NULL; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, NULL); - return 0; - } - local->st_ino = loc->inode->ino; - if (S_ISDIR (loc->inode->st_mode)) { - /* Directory */ - local->call_count = 1; - STACK_WIND (frame, unify_buf_cbk, NS(this), - NS(this)->fops->stat, loc); - } else { - /* File */ - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) - local->call_count++; - - for (index = 0; list[index] != -1; index++) { - char need_break = (list[index+1] == -1); - STACK_WIND (frame, - unify_buf_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->stat, - loc); - if (need_break) - break; - } - } - - return 0; -} - -/** - * unify_access_cbk - - */ -int32_t -unify_access_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -} - - -/** - * unify_access - Send request to only namespace, which has all the - * attributes set for the file. - */ -int32_t -unify_access (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t mask) -{ - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - STACK_WIND (frame, - unify_access_cbk, - NS(this), - NS(this)->fops->access, - loc, - mask); - - return 0; -} - -int32_t -unify_mkdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - inode_t *tmp_inode = NULL; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if ((op_ret == -1) && !(priv->optimist && - (op_errno == ENOENT || - op_errno == EEXIST))) { - /* TODO: Decrement the inode_generation of - * this->inode's parent inode, hence the missing - * directory is created properly by self-heal. - * Currently, there is no way to get the parent - * inode directly. - */ - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - priv->xl_array[(long)cookie]->name, - local->loc1.path, strerror (op_errno)); - if (op_errno != EEXIST) - local->failed = 1; - local->op_errno = op_errno; - } - - if (op_ret >= 0) - local->op_ret = 0; - - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (!local->failed) { - inode_ctx_put (local->loc1.inode, this, - priv->inode_generation); - } - - tmp_inode = local->loc1.inode; - unify_local_wipe (local); - - STACK_UNWIND (frame, local->op_ret, local->op_errno, - tmp_inode, &local->stbuf); - } - - return 0; -} - -/** - * unify_ns_mkdir_cbk - - */ -int32_t -unify_ns_mkdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf) -{ - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - long index = 0; - - if (op_ret == -1) { - /* No need to send mkdir request to other servers, - * as namespace action failed - */ - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s): %s", - local->name, strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, NULL); - return 0; - } - - /* Create one inode for this entry */ - local->op_ret = 0; - local->stbuf = *buf; - - local->call_count = priv->child_count; - - /* Send mkdir request to all the nodes now */ - for (index = 0; index < priv->child_count; index++) { - STACK_WIND_COOKIE (frame, - unify_mkdir_cbk, - (void *)index, //cookie - priv->xl_array[index], - priv->xl_array[index]->fops->mkdir, - &local->loc1, - local->mode); - } - - return 0; -} - - -/** - * unify_mkdir - - */ -int32_t -unify_mkdir (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode) -{ - unify_local_t *local = NULL; - - /* Initialization */ - INIT_LOCAL (frame, local); - local->mode = mode; - - loc_copy (&local->loc1, loc); - - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, NULL, NULL); - return 0; - } - - STACK_WIND (frame, - unify_ns_mkdir_cbk, - NS(this), - NS(this)->fops->mkdir, - loc, - mode); - return 0; -} - -/** - * unify_rmdir_cbk - - */ -int32_t -unify_rmdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret == 0 || (priv->optimist && (op_errno == ENOENT))) - local->op_ret = 0; - if (op_ret == -1) - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno); - } - - return 0; -} - -/** - * unify_ns_rmdir_cbk - - */ -int32_t -unify_ns_rmdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int16_t index = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - if (op_ret == -1) { - /* No need to send rmdir request to other servers, - * as namespace action failed - */ - gf_log (this->name, - ((op_errno != ENOTEMPTY) ? - GF_LOG_ERROR : GF_LOG_DEBUG), - "namespace: path(%s): %s", - local->loc1.path, strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno); - return 0; - } - - local->call_count = priv->child_count; - - for (index = 0; index < priv->child_count; index++) { - STACK_WIND (frame, - unify_rmdir_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->rmdir, - &local->loc1); - } - - return 0; -} - -/** - * unify_rmdir - - */ -int32_t -unify_rmdir (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - unify_local_t *local = NULL; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - - loc_copy (&local->loc1, loc); - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM); - return 0; - } - - STACK_WIND (frame, - unify_ns_rmdir_cbk, - NS(this), - NS(this)->fops->rmdir, - loc); - - return 0; -} - -/** - * unify_open_cbk - - */ -int32_t -unify_open_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd) -{ - int32_t callcnt = 0; - unify_local_t *local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret >= 0) { - local->op_ret = op_ret; - if (NS(this) != (xlator_t *)cookie) { - /* Store child node's ptr, used in - all the f*** / FileIO calls */ - fd_ctx_set (fd, this, (uint64_t)(long)cookie); - } - } - if (op_ret == -1) { - local->op_errno = op_errno; - local->failed = 1; - } - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if ((local->failed == 1) && (local->op_ret >= 0)) { - local->call_count = 1; - /* return -1 to user */ - local->op_ret = -1; - //local->op_errno = EIO; - - if (!fd_ctx_get (local->fd, this, NULL)) { - gf_log (this->name, GF_LOG_ERROR, - "Open success on child node, " - "failed on namespace"); - } else { - gf_log (this->name, GF_LOG_ERROR, - "Open success on namespace, " - "failed on child node"); - } - } - - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, - local->op_errno, local->fd); - } - - return 0; -} - -#ifdef GF_DARWIN_HOST_OS -/** - * unify_create_lookup_cbk - - */ -int32_t -unify_open_lookup_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf, - dict_t *dict) -{ - int32_t callcnt = 0; - int16_t index = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if ((op_ret == -1) && (op_errno != ENOENT)) { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - priv->xl_array[(long)cookie]->name, - local->loc1.path, strerror (op_errno)); - local->op_errno = op_errno; - } - - if (op_ret >= 0) { - local->op_ret = op_ret; - local->index++; - if (NS(this) == priv->xl_array[(long)cookie]) { - local->list[0] = (int16_t)(long)cookie; - } else { - local->list[1] = (int16_t)(long)cookie; - } - if (S_ISDIR (buf->st_mode)) - local->failed = 1; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - int16_t file_list[3] = {0,}; - local->op_ret = -1; - - file_list[0] = local->list[0]; - file_list[1] = local->list[1]; - file_list[2] = -1; - - if (local->index != 2) { - /* Lookup failed, can't do open */ - gf_log (this->name, GF_LOG_ERROR, - "%s: present on %d nodes", - local->name, local->index); - - if (local->index < 2) { - unify_local_wipe (local); - gf_log (this->name, GF_LOG_ERROR, - "returning as file found on less " - "than 2 nodes"); - STACK_UNWIND (frame, local->op_ret, - local->op_errno, local->fd); - return 0; - } - } - - if (local->failed) { - /* Open on directory, return EISDIR */ - unify_local_wipe (local); - STACK_UNWIND (frame, -1, EISDIR, local->fd); - return 0; - } - - /* Everything is perfect :) */ - local->call_count = 2; - - for (index = 0; file_list[index] != -1; index++) { - char need_break = (file_list[index+1] == -1); - STACK_WIND_COOKIE (frame, - unify_open_cbk, - priv->xl_array[file_list[index]], - priv->xl_array[file_list[index]], - priv->xl_array[file_list[index]]->fops->open, - &local->loc1, - local->flags, - local->fd); - if (need_break) - break; - } - } - - return 0; -} - - -int32_t -unify_open_readlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - const char *path) -{ - int16_t index = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - if (op_ret == -1) { - STACK_UNWIND (frame, -1, ENOENT); - return 0; - } - - if (path[0] == '/') { - local->name = strdup (path); - ERR_ABORT (local->name); - } else { - char *tmp_str = strdup (local->loc1.path); - char *tmp_base = dirname (tmp_str); - local->name = CALLOC (1, ZR_PATH_MAX); - strcpy (local->name, tmp_base); - strncat (local->name, "/", 1); - strcat (local->name, path); - FREE (tmp_str); - } - - local->list = CALLOC (1, sizeof (int16_t) * 3); - ERR_ABORT (local->list); - local->call_count = priv->child_count + 1; - local->op_ret = -1; - for (index = 0; index <= priv->child_count; index++) { - /* Send the lookup to all the nodes including namespace */ - STACK_WIND_COOKIE (frame, - unify_open_lookup_cbk, - (void *)(long)index, - priv->xl_array[index], - priv->xl_array[index]->fops->lookup, - &local->loc1, - NULL); - } - - return 0; -} -#endif /* GF_DARWIN_HOST_OS */ - -/** - * unify_open - - */ -int32_t -unify_open (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t flags, - fd_t *fd) -{ - unify_private_t *priv = this->private; - unify_local_t *local = NULL; - int16_t *list = NULL; - int16_t index = 0; - int16_t file_list[3] = {0,}; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Init */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - local->fd = fd; - local->flags = flags; - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - local->list = list; - file_list[0] = priv->child_count; /* Thats namespace */ - file_list[2] = -1; - for (index = 0; list[index] != -1; index++) { - local->call_count++; - if (list[index] != priv->child_count) - file_list[1] = list[index]; - } - - if (local->call_count != 2) { - /* If the lookup was done for file */ - gf_log (this->name, GF_LOG_ERROR, - "%s: entry_count is %d", - loc->path, local->call_count); - for (index = 0; local->list[index] != -1; index++) - gf_log (this->name, GF_LOG_ERROR, "%s: found on %s", - loc->path, priv->xl_array[list[index]]->name); - - if (local->call_count < 2) { - gf_log (this->name, GF_LOG_ERROR, - "returning EIO as file found on onlyone node"); - STACK_UNWIND (frame, -1, EIO, fd); - return 0; - } - } - -#ifdef GF_DARWIN_HOST_OS - /* Handle symlink here */ - if (S_ISLNK (loc->inode->st_mode)) { - /* Callcount doesn't matter here */ - STACK_WIND (frame, - unify_open_readlink_cbk, - NS(this), - NS(this)->fops->readlink, - loc, ZR_PATH_MAX); - return 0; - } -#endif /* GF_DARWIN_HOST_OS */ - - local->call_count = 2; - for (index = 0; file_list[index] != -1; index++) { - char need_break = (file_list[index+1] == -1); - STACK_WIND_COOKIE (frame, - unify_open_cbk, - priv->xl_array[file_list[index]], //cookie - priv->xl_array[file_list[index]], - priv->xl_array[file_list[index]]->fops->open, - loc, - flags, - fd); - if (need_break) - break; - } - - return 0; -} - - -int32_t -unify_create_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - unify_local_t *local = frame->local; - inode_t *inode = local->loc1.inode; - - unify_local_wipe (local); - - STACK_UNWIND (frame, local->op_ret, local->op_errno, local->fd, - inode, &local->stbuf); - - return 0; -} - -/** - * unify_create_open_cbk - - */ -int32_t -unify_create_open_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd) -{ - int ret = 0; - int32_t callcnt = 0; - unify_local_t *local = frame->local; - inode_t *inode = NULL; - xlator_t *child = NULL; - uint64_t tmp_value = 0; - - LOCK (&frame->lock); - { - if (op_ret >= 0) { - local->op_ret = op_ret; - if (NS(this) != (xlator_t *)cookie) { - /* Store child node's ptr, used in all - the f*** / FileIO calls */ - /* TODO: log on failure */ - ret = fd_ctx_get (fd, this, &tmp_value); - cookie = (void *)(long)tmp_value; - } else { - /* NOTE: open successful on namespace. - * fd's ctx can be used to identify open - * failure on storage subvolume. cool - * ide ;) */ - local->failed = 0; - } - } else { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - ((xlator_t *)cookie)->name, - local->loc1.path, strerror (op_errno)); - local->op_errno = op_errno; - local->failed = 1; - } - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->failed == 1 && (local->op_ret >= 0)) { - local->call_count = 1; - /* return -1 to user */ - local->op_ret = -1; - local->op_errno = EIO; - local->fd = fd; - local->call_count = 1; - - if (!fd_ctx_get (local->fd, this, &tmp_value)) { - child = (xlator_t *)(long)tmp_value; - - gf_log (this->name, GF_LOG_ERROR, - "Create success on child node, " - "failed on namespace"); - - STACK_WIND (frame, - unify_create_unlink_cbk, - child, - child->fops->unlink, - &local->loc1); - } else { - gf_log (this->name, GF_LOG_ERROR, - "Create success on namespace, " - "failed on child node"); - - STACK_WIND (frame, - unify_create_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - } - return 0; - } - inode = local->loc1.inode; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, fd, - inode, &local->stbuf); - } - return 0; -} - -/** - * unify_create_lookup_cbk - - */ -int32_t -unify_create_lookup_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf, - dict_t *dict) -{ - int32_t callcnt = 0; - int16_t index = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - priv->xl_array[(long)cookie]->name, - local->loc1.path, strerror (op_errno)); - local->op_errno = op_errno; - local->failed = 1; - } - - if (op_ret >= 0) { - local->op_ret = op_ret; - local->list[local->index++] = (int16_t)(long)cookie; - if (NS(this) == priv->xl_array[(long)cookie]) { - local->st_ino = buf->st_ino; - } else { - local->stbuf = *buf; - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - int16_t *list = local->list; - int16_t file_list[3] = {0,}; - local->op_ret = -1; - - local->list [local->index] = -1; - file_list[0] = list[0]; - file_list[1] = list[1]; - file_list[2] = -1; - - local->stbuf.st_ino = local->st_ino; - /* TODO: log on failure */ - inode_ctx_put (local->loc1.inode, this, - (uint64_t)(long)local->list); - - if (local->index != 2) { - /* Lookup failed, can't do open */ - gf_log (this->name, GF_LOG_ERROR, - "%s: present on %d nodes", - local->loc1.path, local->index); - file_list[0] = priv->child_count; - for (index = 0; list[index] != -1; index++) { - gf_log (this->name, GF_LOG_ERROR, - "%s: found on %s", local->loc1.path, - priv->xl_array[list[index]]->name); - if (list[index] != priv->child_count) - file_list[1] = list[index]; - } - - if (local->index < 2) { - unify_local_wipe (local); - gf_log (this->name, GF_LOG_ERROR, - "returning EIO as file found on " - "only one node"); - STACK_UNWIND (frame, -1, EIO, - local->fd, inode, NULL); - return 0; - } - } - /* Everything is perfect :) */ - local->call_count = 2; - - for (index = 0; file_list[index] != -1; index++) { - char need_break = (file_list[index+1] == -1); - STACK_WIND_COOKIE (frame, - unify_create_open_cbk, - priv->xl_array[file_list[index]], - priv->xl_array[file_list[index]], - priv->xl_array[file_list[index]]->fops->open, - &local->loc1, - local->flags, - local->fd); - if (need_break) - break; - } - } - - return 0; -} - - -/** - * unify_create_cbk - - */ -int32_t -unify_create_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd, - inode_t *inode, - struct stat *buf) -{ - int ret = 0; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - inode_t *tmp_inode = NULL; - - if (op_ret == -1) { - /* send unlink () on Namespace */ - local->op_errno = op_errno; - local->op_ret = -1; - local->call_count = 1; - gf_log (this->name, GF_LOG_ERROR, - "create failed on %s (file %s, error %s), " - "sending unlink to namespace", - prev_frame->this->name, - local->loc1.path, strerror (op_errno)); - - STACK_WIND (frame, - unify_create_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - - return 0; - } - - if (op_ret >= 0) { - local->op_ret = op_ret; - local->stbuf = *buf; - /* Just inode number should be from NS node */ - local->stbuf.st_ino = local->st_ino; - - /* TODO: log on failure */ - ret = fd_ctx_set (fd, this, (uint64_t)(long)prev_frame->this); - } - - tmp_inode = local->loc1.inode; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, local->fd, - tmp_inode, &local->stbuf); - - return 0; -} - -/** - * unify_ns_create_cbk - - * - */ -int32_t -unify_ns_create_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd, - inode_t *inode, - struct stat *buf) -{ - struct sched_ops *sched_ops = NULL; - xlator_t *sched_xl = NULL; - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - int16_t *list = NULL; - int16_t index = 0; - - if (op_ret == -1) { - /* No need to send create request to other servers, as - namespace action failed. Handle exclusive create here. */ - if ((op_errno != EEXIST) || - ((op_errno == EEXIST) && - ((local->flags & O_EXCL) == O_EXCL))) { - /* If its just a create call without O_EXCL, - don't do this */ - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s): %s", - local->loc1.path, strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, fd, inode, buf); - return 0; - } - } - - if (op_ret >= 0) { - /* Get the inode number from the NS node */ - local->st_ino = buf->st_ino; - - local->op_ret = -1; - - /* Start the mapping list */ - list = CALLOC (1, sizeof (int16_t) * 3); - ERR_ABORT (list); - inode_ctx_put (inode, this, (uint64_t)(long)list); - list[0] = priv->child_count; - list[2] = -1; - - /* This means, file doesn't exist anywhere in the Filesystem */ - sched_ops = priv->sched_ops; - - /* Send create request to the scheduled node now */ - sched_xl = sched_ops->schedule (this, local->loc1.path); - if (sched_xl == NULL) - { - /* send unlink () on Namespace */ - local->op_errno = ENOTCONN; - local->op_ret = -1; - local->call_count = 1; - gf_log (this->name, GF_LOG_ERROR, - "no node online to schedule create:(file %s) " - "sending unlink to namespace", - (local->loc1.path)?local->loc1.path:""); - - STACK_WIND (frame, - unify_create_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - - return 0; - } - - for (index = 0; index < priv->child_count; index++) - if (sched_xl == priv->xl_array[index]) - break; - list[1] = index; - - STACK_WIND (frame, unify_create_cbk, - sched_xl, sched_xl->fops->create, - &local->loc1, local->flags, local->mode, fd); - } else { - /* File already exists, and there is no O_EXCL flag */ - - gf_log (this->name, GF_LOG_DEBUG, - "File(%s) already exists on namespace, sending " - "open instead", local->loc1.path); - - local->list = CALLOC (1, sizeof (int16_t) * 3); - ERR_ABORT (local->list); - local->call_count = priv->child_count + 1; - local->op_ret = -1; - for (index = 0; index <= priv->child_count; index++) { - /* Send lookup() to all nodes including namespace */ - STACK_WIND_COOKIE (frame, - unify_create_lookup_cbk, - (void *)(long)index, - priv->xl_array[index], - priv->xl_array[index]->fops->lookup, - &local->loc1, - NULL); - } - } - return 0; -} - -/** - * unify_create - create a file in global namespace first, so other - * clients can see them. Create the file in storage nodes in background. - */ -int32_t -unify_create (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t flags, - mode_t mode, - fd_t *fd) -{ - unify_local_t *local = NULL; - - /* Initialization */ - INIT_LOCAL (frame, local); - local->mode = mode; - local->flags = flags; - local->fd = fd; - - loc_copy (&local->loc1, loc); - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, fd, loc->inode, NULL); - return 0; - } - - STACK_WIND (frame, - unify_ns_create_cbk, - NS(this), - NS(this)->fops->create, - loc, - flags | O_EXCL, - mode, - fd); - - return 0; -} - - -/** - * unify_opendir_cbk - - */ -int32_t -unify_opendir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd) -{ - STACK_UNWIND (frame, op_ret, op_errno, fd); - - return 0; -} - -/** - * unify_opendir - - */ -int32_t -unify_opendir (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - fd_t *fd) -{ - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - STACK_WIND (frame, unify_opendir_cbk, - NS(this), NS(this)->fops->opendir, loc, fd); - - return 0; -} - - -/** - * unify_chmod - - */ -int32_t -unify_chmod (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode) -{ - unify_local_t *local = NULL; - unify_private_t *priv = this->private; - int32_t index = 0; - int32_t callcnt = 0; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - - loc_copy (&local->loc1, loc); - local->st_ino = loc->inode->ino; - - if (S_ISDIR (loc->inode->st_mode)) { - local->call_count = priv->child_count + 1; - - for (index = 0; index < (priv->child_count + 1); index++) { - STACK_WIND (frame, - unify_buf_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->chmod, - loc, mode); - } - } else { - inode_ctx_get (loc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - - for (index = 0; local->list[index] != -1; index++) { - local->call_count++; - callcnt++; - } - - for (index = 0; local->list[index] != -1; index++) { - STACK_WIND (frame, - unify_buf_cbk, - priv->xl_array[local->list[index]], - priv->xl_array[local->list[index]]->fops->chmod, - loc, - mode); - if (!--callcnt) - break; - } - } - - return 0; -} - -/** - * unify_chown - - */ -int32_t -unify_chown (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - uid_t uid, - gid_t gid) -{ - unify_local_t *local = NULL; - unify_private_t *priv = this->private; - int32_t index = 0; - int32_t callcnt = 0; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - local->st_ino = loc->inode->ino; - - if (S_ISDIR (loc->inode->st_mode)) { - local->call_count = priv->child_count + 1; - - for (index = 0; index < (priv->child_count + 1); index++) { - STACK_WIND (frame, - unify_buf_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->chown, - loc, uid, gid); - } - } else { - inode_ctx_get (loc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - - for (index = 0; local->list[index] != -1; index++) { - local->call_count++; - callcnt++; - } - - for (index = 0; local->list[index] != -1; index++) { - STACK_WIND (frame, - unify_buf_cbk, - priv->xl_array[local->list[index]], - priv->xl_array[local->list[index]]->fops->chown, - loc, uid, gid); - if (!--callcnt) - break; - } - } - - return 0; -} - - -/** - * unify_truncate_cbk - - */ -int32_t -unify_truncate_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - prev_frame->this->name, - (local->loc1.path)?local->loc1.path:"", - strerror (op_errno)); - local->op_errno = op_errno; - if (!((op_errno == ENOENT) && priv->optimist)) - local->op_ret = -1; - } - - if (op_ret >= 0) { - if (NS (this) == prev_frame->this) { - local->st_ino = buf->st_ino; - /* If the entry is directory, get the - stat from NS node */ - if (S_ISDIR (buf->st_mode) || - !local->stbuf.st_blksize) { - local->stbuf = *buf; - } - } - - if ((!S_ISDIR (buf->st_mode)) && - (NS (this) != prev_frame->this)) { - /* If file, take the stat info from - Storage node. */ - local->stbuf = *buf; - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->st_ino) - local->stbuf.st_ino = local->st_ino; - else - local->op_ret = -1; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf); - } - - return 0; -} - -/** - * unify_truncate - - */ -int32_t -unify_truncate (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - off_t offset) -{ - unify_local_t *local = NULL; - unify_private_t *priv = this->private; - int32_t index = 0; - int32_t callcnt = 0; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - local->st_ino = loc->inode->ino; - - if (S_ISDIR (loc->inode->st_mode)) { - local->call_count = 1; - - STACK_WIND (frame, - unify_buf_cbk, - NS(this), - NS(this)->fops->stat, - loc); - } else { - local->op_ret = 0; - inode_ctx_get (loc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - - for (index = 0; local->list[index] != -1; index++) { - local->call_count++; - callcnt++; - } - - /* Don't send truncate to NS node */ - STACK_WIND (frame, unify_truncate_cbk, NS(this), - NS(this)->fops->stat, loc); - callcnt--; - - for (index = 0; local->list[index] != -1; index++) { - if (NS(this) != priv->xl_array[local->list[index]]) { - STACK_WIND (frame, - unify_truncate_cbk, - priv->xl_array[local->list[index]], - priv->xl_array[local->list[index]]->fops->truncate, - loc, - offset); - if (!--callcnt) - break; - } - } - } - - return 0; -} - -/** - * unify_utimens - - */ -int32_t -unify_utimens (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - struct timespec tv[2]) -{ - unify_local_t *local = NULL; - unify_private_t *priv = this->private; - int32_t index = 0; - int32_t callcnt = 0; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - local->st_ino = loc->inode->ino; - - if (S_ISDIR (loc->inode->st_mode)) { - local->call_count = priv->child_count + 1; - - for (index = 0; index < (priv->child_count + 1); index++) { - STACK_WIND (frame, - unify_buf_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->utimens, - loc, tv); - } - } else { - inode_ctx_get (loc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - - for (index = 0; local->list[index] != -1; index++) { - local->call_count++; - callcnt++; - } - - for (index = 0; local->list[index] != -1; index++) { - STACK_WIND (frame, - unify_buf_cbk, - priv->xl_array[local->list[index]], - priv->xl_array[local->list[index]]->fops->utimens, - loc, - tv); - if (!--callcnt) - break; - } - } - - return 0; -} - -/** - * unify_readlink_cbk - - */ -int32_t -unify_readlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - const char *path) -{ - STACK_UNWIND (frame, op_ret, op_errno, path); - return 0; -} - -/** - * unify_readlink - Read the link only from the storage node. - */ -int32_t -unify_readlink (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - size_t size) -{ - unify_private_t *priv = this->private; - int32_t entry_count = 0; - int16_t *list = NULL; - int16_t index = 0; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) - entry_count++; - - if (entry_count >= 2) { - for (index = 0; list[index] != -1; index++) { - if (priv->xl_array[list[index]] != NS(this)) { - STACK_WIND (frame, - unify_readlink_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->readlink, - loc, - size); - break; - } - } - } else { - gf_log (this->name, GF_LOG_ERROR, - "returning ENOENT, no softlink files found " - "on storage node"); - STACK_UNWIND (frame, -1, ENOENT, NULL); - } - - return 0; -} - - -/** - * unify_unlink_cbk - - */ -int32_t -unify_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret == 0 || ((op_errno == ENOENT) && priv->optimist)) - local->op_ret = 0; - if (op_ret == -1) - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno); - } - - return 0; -} - - -/** - * unify_unlink - - */ -int32_t -unify_unlink (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - unify_private_t *priv = this->private; - unify_local_t *local = NULL; - int16_t *list = NULL; - int16_t index = 0; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) - local->call_count++; - - if (local->call_count) { - for (index = 0; list[index] != -1; index++) { - char need_break = (list[index+1] == -1); - STACK_WIND (frame, - unify_unlink_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->unlink, - loc); - if (need_break) - break; - } - } else { - gf_log (this->name, GF_LOG_ERROR, - "%s: returning ENOENT", loc->path); - STACK_UNWIND (frame, -1, ENOENT); - } - - return 0; -} - - -/** - * unify_readv_cbk - - */ -int32_t -unify_readv_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iovec *vector, - int32_t count, - struct stat *stbuf, - struct iobref *iobref) -{ - STACK_UNWIND (frame, op_ret, op_errno, vector, count, stbuf, iobref); - return 0; -} - -/** - * unify_readv - - */ -int32_t -unify_readv (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t offset) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, - unify_readv_cbk, - child, - child->fops->readv, - fd, - size, - offset); - - - return 0; -} - -/** - * unify_writev_cbk - - */ -int32_t -unify_writev_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *stbuf) -{ - STACK_UNWIND (frame, op_ret, op_errno, stbuf); - return 0; -} - -/** - * unify_writev - - */ -int32_t -unify_writev (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - struct iovec *vector, - int32_t count, - off_t off, - struct iobref *iobref) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, - unify_writev_cbk, - child, - child->fops->writev, - fd, - vector, - count, - off, - iobref); - - return 0; -} - -/** - * unify_ftruncate - - */ -int32_t -unify_ftruncate (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - off_t offset) -{ - xlator_t *child = NULL; - unify_local_t *local = NULL; - uint64_t tmp_child = 0; - - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR(fd); - - /* Initialization */ - INIT_LOCAL (frame, local); - local->op_ret = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - local->call_count = 2; - - STACK_WIND (frame, unify_truncate_cbk, - child, child->fops->ftruncate, - fd, offset); - - STACK_WIND (frame, unify_truncate_cbk, - NS(this), NS(this)->fops->fstat, - fd); - - return 0; -} - - -/** - * unify_fchmod - - */ -int32_t -unify_fchmod (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - mode_t mode) -{ - unify_local_t *local = NULL; - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR(fd); - - /* Initialization */ - INIT_LOCAL (frame, local); - local->st_ino = fd->inode->ino; - - if (!fd_ctx_get (fd, this, &tmp_child)) { - /* If its set, then its file */ - child = (xlator_t *)(long)tmp_child; - - local->call_count = 2; - - STACK_WIND (frame, unify_buf_cbk, child, - child->fops->fchmod, fd, mode); - - STACK_WIND (frame, unify_buf_cbk, NS(this), - NS(this)->fops->fchmod, fd, mode); - - } else { - /* this is an directory */ - local->call_count = 1; - - STACK_WIND (frame, unify_buf_cbk, - NS(this), NS(this)->fops->fchmod, fd, mode); - } - - return 0; -} - -/** - * unify_fchown - - */ -int32_t -unify_fchown (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - uid_t uid, - gid_t gid) -{ - unify_local_t *local = NULL; - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR(fd); - - /* Initialization */ - INIT_LOCAL (frame, local); - local->st_ino = fd->inode->ino; - - if (!fd_ctx_get (fd, this, &tmp_child)) { - /* If its set, then its file */ - child = (xlator_t *)(long)tmp_child; - - local->call_count = 2; - - STACK_WIND (frame, unify_buf_cbk, child, - child->fops->fchown, fd, uid, gid); - - STACK_WIND (frame, unify_buf_cbk, NS(this), - NS(this)->fops->fchown, fd, uid, gid); - } else { - local->call_count = 1; - - STACK_WIND (frame, unify_buf_cbk, - NS(this), NS(this)->fops->fchown, - fd, uid, gid); - } - - return 0; -} - -/** - * unify_flush_cbk - - */ -int32_t -unify_flush_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -} - -/** - * unify_flush - - */ -int32_t -unify_flush (call_frame_t *frame, - xlator_t *this, - fd_t *fd) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_flush_cbk, child, - child->fops->flush, fd); - - return 0; -} - - -/** - * unify_fsync_cbk - - */ -int32_t -unify_fsync_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -} - -/** - * unify_fsync - - */ -int32_t -unify_fsync (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t flags) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_fsync_cbk, child, - child->fops->fsync, fd, flags); - - return 0; -} - -/** - * unify_fstat - Send fstat FOP to Namespace only if its directory, and to - * both namespace and the storage node if its a file. - */ -int32_t -unify_fstat (call_frame_t *frame, - xlator_t *this, - fd_t *fd) -{ - unify_local_t *local = NULL; - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR(fd); - - INIT_LOCAL (frame, local); - local->st_ino = fd->inode->ino; - - if (!fd_ctx_get (fd, this, &tmp_child)) { - /* If its set, then its file */ - child = (xlator_t *)(long)tmp_child; - local->call_count = 2; - - STACK_WIND (frame, unify_buf_cbk, child, - child->fops->fstat, fd); - - STACK_WIND (frame, unify_buf_cbk, NS(this), - NS(this)->fops->fstat, fd); - - } else { - /* this is an directory */ - local->call_count = 1; - STACK_WIND (frame, unify_buf_cbk, NS(this), - NS(this)->fops->fstat, fd); - } - - return 0; -} - -/** - * unify_getdents_cbk - - */ -int32_t -unify_getdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dir_entry_t *entry, - int32_t count) -{ - STACK_UNWIND (frame, op_ret, op_errno, entry, count); - return 0; -} - -/** - * unify_getdents - send the FOP request to all the nodes. - */ -int32_t -unify_getdents (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t offset, - int32_t flag) -{ - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR (fd); - - STACK_WIND (frame, unify_getdents_cbk, NS(this), - NS(this)->fops->getdents, fd, size, offset, flag); - - return 0; -} - - -/** - * unify_readdir_cbk - - */ -int32_t -unify_readdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - gf_dirent_t *buf) -{ - STACK_UNWIND (frame, op_ret, op_errno, buf); - - return 0; -} - -/** - * unify_readdir - send the FOP request to all the nodes. - */ -int32_t -unify_readdir (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t offset) -{ - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR (fd); - - STACK_WIND (frame, unify_readdir_cbk, NS(this), - NS(this)->fops->readdir, fd, size, offset); - - return 0; -} - - -/** - * unify_fsyncdir_cbk - - */ -int32_t -unify_fsyncdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - STACK_UNWIND (frame, op_ret, op_errno); - - return 0; -} - -/** - * unify_fsyncdir - - */ -int32_t -unify_fsyncdir (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t flags) -{ - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR (fd); - - STACK_WIND (frame, unify_fsyncdir_cbk, - NS(this), NS(this)->fops->fsyncdir, fd, flags); - - return 0; -} - -/** - * unify_lk_cbk - UNWIND frame with the proper return arguments. - */ -int32_t -unify_lk_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct flock *lock) -{ - STACK_UNWIND (frame, op_ret, op_errno, lock); - return 0; -} - -/** - * unify_lk - Send it to all the storage nodes, (should be 1) which has file. - */ -int32_t -unify_lk (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t cmd, - struct flock *lock) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_lk_cbk, child, - child->fops->lk, fd, cmd, lock); - - return 0; -} - - -int32_t -unify_setxattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno); - -static int32_t -unify_setxattr_file_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - unify_private_t *private = this->private; - unify_local_t *local = frame->local; - xlator_t *sched_xl = NULL; - struct sched_ops *sched_ops = NULL; - - if (op_ret == -1) { - if (!ENOTSUP) - gf_log (this->name, GF_LOG_ERROR, - "setxattr with XATTR_CREATE on ns: " - "path(%s) key(%s): %s", - local->loc1.path, local->name, - strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno); - return 0; - } - - LOCK (&frame->lock); - { - local->failed = 0; - local->op_ret = 0; - local->op_errno = 0; - local->call_count = 1; - } - UNLOCK (&frame->lock); - - /* schedule XATTR_CREATE on one of the child node */ - sched_ops = private->sched_ops; - - /* Send create request to the scheduled node now */ - sched_xl = sched_ops->schedule (this, local->name); - if (!sched_xl) { - STACK_UNWIND (frame, -1, ENOTCONN); - return 0; - } - - STACK_WIND (frame, - unify_setxattr_cbk, - sched_xl, - sched_xl->fops->setxattr, - &local->loc1, - local->dict, - local->flags); - return 0; -} - -/** - * unify_setxattr_cbk - When all the child nodes return, UNWIND frame. - */ -int32_t -unify_setxattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int32_t callcnt = 0; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - dict_t *dict = NULL; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, (((op_errno == ENOENT) || - (op_errno == ENOTSUP))? - GF_LOG_DEBUG : GF_LOG_ERROR), - "child(%s): path(%s): %s", - prev_frame->this->name, - (local->loc1.path)?local->loc1.path:"", - strerror (op_errno)); - if (local->failed == -1) { - local->failed = 1; - } - local->op_errno = op_errno; - } else { - local->failed = 0; - local->op_ret = op_ret; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->failed && local->name && - ZR_FILE_CONTENT_REQUEST(local->name)) { - dict = get_new_dict (); - dict_set (dict, local->dict->members_list->key, - data_from_dynptr(NULL, 0)); - dict_ref (dict); - - local->call_count = 1; - - STACK_WIND (frame, - unify_setxattr_file_cbk, - NS(this), - NS(this)->fops->setxattr, - &local->loc1, - dict, - XATTR_CREATE); - - dict_unref (dict); - return 0; - } - - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno); - } - - return 0; -} - -/** - * unify_sexattr - This function should be sent to all the storage nodes, - * which contains the file, (excluding namespace). - */ -int32_t -unify_setxattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - dict_t *dict, - int32_t flags) -{ - unify_private_t *priv = this->private; - unify_local_t *local = NULL; - int16_t *list = NULL; - int16_t index = 0; - int32_t call_count = 0; - uint64_t tmp_list = 0; - data_pair_t *trav = dict->members_list; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - local->failed = -1; - loc_copy (&local->loc1, loc); - - if (S_ISDIR (loc->inode->st_mode)) { - - if (trav && trav->key && ZR_FILE_CONTENT_REQUEST(trav->key)) { - /* direct the storage xlators to change file - content only if file exists */ - local->flags = flags; - local->dict = dict; - local->name = strdup (trav->key); - flags |= XATTR_REPLACE; - } - - local->call_count = priv->child_count; - for (index = 0; index < priv->child_count; index++) { - STACK_WIND (frame, - unify_setxattr_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->setxattr, - loc, dict, flags); - } - return 0; - } - - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) { - if (NS(this) != priv->xl_array[list[index]]) { - local->call_count++; - call_count++; - } - } - - if (local->call_count) { - for (index = 0; list[index] != -1; index++) { - if (priv->xl_array[list[index]] != NS(this)) { - STACK_WIND (frame, - unify_setxattr_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->setxattr, - loc, - dict, - flags); - if (!--call_count) - break; - } - } - return 0; - } - - /* No entry in storage nodes */ - gf_log (this->name, GF_LOG_DEBUG, - "returning ENOENT, file not found on storage node."); - STACK_UNWIND (frame, -1, ENOENT); - - return 0; -} - - -/** - * unify_getxattr_cbk - This function is called from only one child, so, no - * need of any lock or anything else, just send it to above layer - */ -int32_t -unify_getxattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dict_t *value) -{ - int32_t callcnt = 0; - dict_t *local_value = NULL; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - local->op_errno = op_errno; - gf_log (this->name, - (((op_errno == ENOENT) || - (op_errno == ENODATA) || - (op_errno == ENOTSUP)) ? - GF_LOG_DEBUG : GF_LOG_ERROR), - "child(%s): path(%s): %s", - prev_frame->this->name, - (local->loc1.path)?local->loc1.path:"", - strerror (op_errno)); - } else { - if (!local->dict) - local->dict = dict_ref (value); - local->op_ret = op_ret; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - local_value = local->dict; - local->dict = NULL; - - STACK_UNWIND (frame, local->op_ret, local->op_errno, - local_value); - - if (local_value) - dict_unref (local_value); - } - - return 0; -} - - -/** - * unify_getxattr - This FOP is sent to only the storage node. - */ -int32_t -unify_getxattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - const char *name) -{ - unify_private_t *priv = this->private; - int16_t *list = NULL; - int16_t index = 0; - int16_t count = 0; - unify_local_t *local = NULL; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - INIT_LOCAL (frame, local); - - if (S_ISDIR (loc->inode->st_mode)) { - local->call_count = priv->child_count; - for (index = 0; index < priv->child_count; index++) - STACK_WIND (frame, - unify_getxattr_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->getxattr, - loc, - name); - return 0; - } - - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) { - if (NS(this) != priv->xl_array[list[index]]) { - local->call_count++; - count++; - } - } - - if (count) { - for (index = 0; list[index] != -1; index++) { - if (priv->xl_array[list[index]] != NS(this)) { - STACK_WIND (frame, - unify_getxattr_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->getxattr, - loc, - name); - if (!--count) - break; - } - } - } else { - dict_t *tmp_dict = get_new_dict (); - gf_log (this->name, GF_LOG_DEBUG, - "%s: returning ENODATA, no file found on storage node", - loc->path); - STACK_UNWIND (frame, -1, ENODATA, tmp_dict); - dict_destroy (tmp_dict); - } - - return 0; -} - -/** - * unify_removexattr_cbk - Wait till all the child node returns the call - * and then UNWIND to above layer. - */ -int32_t -unify_removexattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int32_t callcnt = 0; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret == -1) { - local->op_errno = op_errno; - if (op_errno != ENOTSUP) - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - prev_frame->this->name, - local->loc1.path, strerror (op_errno)); - } else { - local->op_ret = op_ret; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - STACK_UNWIND (frame, local->op_ret, local->op_errno); - } - - return 0; -} - -/** - * unify_removexattr - Send it to all the child nodes which has the files. - */ -int32_t -unify_removexattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - const char *name) -{ - unify_private_t *priv = this->private; - unify_local_t *local = NULL; - int16_t *list = NULL; - int16_t index = 0; - int32_t call_count = 0; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - - if (S_ISDIR (loc->inode->st_mode)) { - local->call_count = priv->child_count; - for (index = 0; index < priv->child_count; index++) - STACK_WIND (frame, - unify_removexattr_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->removexattr, - loc, - name); - - return 0; - } - - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) { - if (NS(this) != priv->xl_array[list[index]]) { - local->call_count++; - call_count++; - } - } - - if (local->call_count) { - for (index = 0; list[index] != -1; index++) { - if (priv->xl_array[list[index]] != NS(this)) { - STACK_WIND (frame, - unify_removexattr_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->removexattr, - loc, - name); - if (!--call_count) - break; - } - } - return 0; - } - - gf_log (this->name, GF_LOG_DEBUG, - "%s: returning ENOENT, not found on storage node.", loc->path); - STACK_UNWIND (frame, -1, ENOENT); - - return 0; -} - - -int32_t -unify_mknod_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - unify_local_t *local = frame->local; - - if (op_ret == -1) - gf_log (this->name, GF_LOG_ERROR, - "%s: %s", local->loc1.path, strerror (op_errno)); - - unify_local_wipe (local); - /* No log required here as this -1 is for mknod call */ - STACK_UNWIND (frame, -1, local->op_errno, NULL, NULL); - return 0; -} - -/** - * unify_mknod_cbk - - */ -int32_t -unify_mknod_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf) -{ - unify_local_t *local = frame->local; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "mknod failed on storage node, sending unlink to " - "namespace"); - local->op_errno = op_errno; - STACK_WIND (frame, - unify_mknod_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - return 0; - } - - local->stbuf = *buf; - local->stbuf.st_ino = local->st_ino; - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, &local->stbuf); - return 0; -} - -/** - * unify_ns_mknod_cbk - - */ -int32_t -unify_ns_mknod_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf) -{ - struct sched_ops *sched_ops = NULL; - xlator_t *sched_xl = NULL; - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - int16_t *list = NULL; - int16_t index = 0; - call_frame_t *prev_frame = cookie; - - if (op_ret == -1) { - /* No need to send mknod request to other servers, - * as namespace action failed - */ - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - prev_frame->this->name, local->loc1.path, - strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, buf); - return 0; - } - - /* Create one inode for this entry */ - local->op_ret = 0; - local->stbuf = *buf; - local->st_ino = buf->st_ino; - - list = CALLOC (1, sizeof (int16_t) * 3); - ERR_ABORT (list); - list[0] = priv->child_count; - list[2] = -1; - inode_ctx_put (inode, this, (uint64_t)(long)list); - - sched_ops = priv->sched_ops; - - /* Send mknod request to scheduled node now */ - sched_xl = sched_ops->schedule (this, local->loc1.path); - if (!sched_xl) { - gf_log (this->name, GF_LOG_ERROR, - "mknod failed on storage node, no node online " - "at the moment, sending unlink to NS"); - local->op_errno = ENOTCONN; - STACK_WIND (frame, - unify_mknod_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - - return 0; - } - - for (index = 0; index < priv->child_count; index++) - if (sched_xl == priv->xl_array[index]) - break; - list[1] = index; - - STACK_WIND (frame, unify_mknod_cbk, - sched_xl, sched_xl->fops->mknod, - &local->loc1, local->mode, local->dev); - - return 0; -} - -/** - * unify_mknod - Create a device on namespace first, and later create on - * the storage node. - */ -int32_t -unify_mknod (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode, - dev_t rdev) -{ - unify_local_t *local = NULL; - - /* Initialization */ - INIT_LOCAL (frame, local); - local->mode = mode; - local->dev = rdev; - loc_copy (&local->loc1, loc); - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, loc->inode, NULL); - return 0; - } - - STACK_WIND (frame, - unify_ns_mknod_cbk, - NS(this), - NS(this)->fops->mknod, - loc, - mode, - rdev); - - return 0; -} - -int32_t -unify_symlink_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - unify_local_t *local = frame->local; - if (op_ret == -1) - gf_log (this->name, GF_LOG_ERROR, - "%s: %s", local->loc1.path, strerror (op_errno)); - - unify_local_wipe (local); - STACK_UNWIND (frame, -1, local->op_errno, NULL, NULL); - return 0; -} - -/** - * unify_symlink_cbk - - */ -int32_t -unify_symlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf) -{ - unify_local_t *local = frame->local; - - if (op_ret == -1) { - /* Symlink on storage node failed, hence send unlink - to the NS node */ - local->op_errno = op_errno; - gf_log (this->name, GF_LOG_ERROR, - "symlink on storage node failed, sending unlink " - "to namespace"); - - STACK_WIND (frame, - unify_symlink_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - - return 0; - } - - local->stbuf = *buf; - local->stbuf.st_ino = local->st_ino; - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, &local->stbuf); - - return 0; -} - -/** - * unify_ns_symlink_cbk - - */ -int32_t -unify_ns_symlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf) -{ - - struct sched_ops *sched_ops = NULL; - xlator_t *sched_xl = NULL; - int16_t *list = NULL; - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - int16_t index = 0; - - if (op_ret == -1) { - /* No need to send symlink request to other servers, - * as namespace action failed - */ - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s): %s", - local->loc1.path, strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, NULL, buf); - return 0; - } - - /* Create one inode for this entry */ - local->op_ret = 0; - local->st_ino = buf->st_ino; - - /* Start the mapping list */ - - list = CALLOC (1, sizeof (int16_t) * 3); - ERR_ABORT (list); - list[0] = priv->child_count; //namespace's index - list[2] = -1; - inode_ctx_put (inode, this, (uint64_t)(long)list); - - sched_ops = priv->sched_ops; - - /* Send symlink request to all the nodes now */ - sched_xl = sched_ops->schedule (this, local->loc1.path); - if (!sched_xl) { - /* Symlink on storage node failed, hence send unlink - to the NS node */ - local->op_errno = ENOTCONN; - gf_log (this->name, GF_LOG_ERROR, - "symlink on storage node failed, no node online, " - "sending unlink to namespace"); - - STACK_WIND (frame, - unify_symlink_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - - return 0; - } - - for (index = 0; index < priv->child_count; index++) - if (sched_xl == priv->xl_array[index]) - break; - list[1] = index; - - STACK_WIND (frame, - unify_symlink_cbk, - sched_xl, - sched_xl->fops->symlink, - local->name, - &local->loc1); - - return 0; -} - -/** - * unify_symlink - - */ -int32_t -unify_symlink (call_frame_t *frame, - xlator_t *this, - const char *linkpath, - loc_t *loc) -{ - unify_local_t *local = NULL; - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - local->name = strdup (linkpath); - - if ((local->name == NULL) || - (local->loc1.path == NULL)) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, loc->inode, NULL); - return 0; - } - - STACK_WIND (frame, - unify_ns_symlink_cbk, - NS(this), - NS(this)->fops->symlink, - linkpath, - loc); - - return 0; -} - - -int32_t -unify_rename_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int32_t callcnt = 0; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s -> %s): %s", - prev_frame->this->name, - local->loc1.path, local->loc2.path, - strerror (op_errno)); - - } - LOCK (&frame->lock); - { - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - local->stbuf.st_ino = local->st_ino; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf); - } - return 0; -} - -int32_t -unify_ns_rename_undo_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) -{ - unify_local_t *local = frame->local; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s -> %s): %s", - local->loc1.path, local->loc2.path, - strerror (op_errno)); - } - - local->stbuf.st_ino = local->st_ino; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, &local->stbuf); - return 0; -} - -int32_t -unify_rename_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) -{ - int32_t index = 0; - int32_t callcnt = 0; - int16_t *list = NULL; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret >= 0) { - if (!S_ISDIR (buf->st_mode)) - local->stbuf = *buf; - local->op_ret = op_ret; - } else { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s -> %s): %s", - prev_frame->this->name, - local->loc1.path, local->loc2.path, - strerror (op_errno)); - local->op_errno = op_errno; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - local->stbuf.st_ino = local->st_ino; - if (S_ISDIR (local->loc1.inode->st_mode)) { - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, &local->stbuf); - return 0; - } - - if (local->op_ret == -1) { - /* TODO: check this logic */ - - /* Rename failed in storage node, successful on NS, - * hence, rename back the entries in NS */ - /* NOTE: this will be done only if the destination - * doesn't exists, if the destination exists, the - * job of correcting NS is left to self-heal - */ - if (!local->index) { - loc_t tmp_oldloc = { - /* its actual 'newloc->path' */ - .path = local->loc2.path, - .inode = local->loc1.inode, - .parent = local->loc2.parent - }; - - loc_t tmp_newloc = { - /* Actual 'oldloc->path' */ - .path = local->loc1.path, - .parent = local->loc1.parent - }; - - gf_log (this->name, GF_LOG_ERROR, - "rename succussful on namespace, on " - "stroage node failed, reverting back"); - - STACK_WIND (frame, - unify_ns_rename_undo_cbk, - NS(this), - NS(this)->fops->rename, - &tmp_oldloc, - &tmp_newloc); - return 0; - } - } else { - /* Rename successful on storage nodes */ - - int32_t idx = 0; - int16_t *tmp_list = NULL; - uint64_t tmp_list_int64 = 0; - if (local->loc2.inode) { - inode_ctx_get (local->loc2.inode, - this, &tmp_list_int64); - list = (int16_t *)(long)tmp_list_int64; - - } - - if (list) { - for (index = 0; list[index] != -1; index++); - tmp_list = CALLOC (1, index * 2); - memcpy (tmp_list, list, index * 2); - - for (index = 0; list[index] != -1; index++) { - /* TODO: Check this logic. */ - /* If the destination file exists in - * the same storage node where we sent - * 'rename' call, no need to send - * unlink - */ - for (idx = 0; - local->list[idx] != -1; idx++) { - if (tmp_list[index] == local->list[idx]) { - tmp_list[index] = priv->child_count; - continue; - } - } - - if (NS(this) != priv->xl_array[tmp_list[index]]) { - local->call_count++; - callcnt++; - } - } - - if (local->call_count) { - if (callcnt > 1) - gf_log (this->name, - GF_LOG_ERROR, - "%s->%s: more (%d) " - "subvolumes have the " - "newloc entry", - local->loc1.path, - local->loc2.path, - callcnt); - - for (index=0; - tmp_list[index] != -1; index++) { - if (NS(this) != priv->xl_array[tmp_list[index]]) { - STACK_WIND (frame, - unify_rename_unlink_cbk, - priv->xl_array[tmp_list[index]], - priv->xl_array[tmp_list[index]]->fops->unlink, - &local->loc2); - if (!--callcnt) - break; - } - } - - FREE (tmp_list); - return 0; - } - if (tmp_list) - FREE (tmp_list); - } - } - - /* Need not send 'unlink' to storage node */ - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, - local->op_errno, &local->stbuf); - } - - return 0; -} - -int32_t -unify_ns_rename_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct stat *buf) -{ - int32_t index = 0; - int32_t callcnt = 0; - int16_t *list = NULL; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - if (op_ret == -1) { - /* Free local->new_inode */ - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s -> %s): %s", - local->loc1.path, local->loc2.path, - strerror (op_errno)); - - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, buf); - return 0; - } - - local->stbuf = *buf; - local->st_ino = buf->st_ino; - - /* Everything is fine. */ - if (S_ISDIR (buf->st_mode)) { - local->call_count = priv->child_count; - for (index=0; index < priv->child_count; index++) { - STACK_WIND (frame, - unify_rename_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->rename, - &local->loc1, - &local->loc2); - } - - return 0; - } - - local->call_count = 0; - /* send rename */ - list = local->list; - for (index=0; list[index] != -1; index++) { - if (NS(this) != priv->xl_array[list[index]]) { - local->call_count++; - callcnt++; - } - } - - if (local->call_count) { - for (index=0; list[index] != -1; index++) { - if (NS(this) != priv->xl_array[list[index]]) { - STACK_WIND (frame, - unify_rename_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->rename, - &local->loc1, - &local->loc2); - if (!--callcnt) - break; - } - } - } else { - /* file doesn't seem to be present in storage nodes */ - gf_log (this->name, GF_LOG_CRITICAL, - "CRITICAL: source file not in storage node, " - "rename successful on namespace :O"); - unify_local_wipe (local); - STACK_UNWIND (frame, -1, EIO, NULL); - } - return 0; -} - - -/** - * unify_rename - One of the tricky function. The deadliest of all :O - */ -int32_t -unify_rename (call_frame_t *frame, - xlator_t *this, - loc_t *oldloc, - loc_t *newloc) -{ - unify_local_t *local = NULL; - uint64_t tmp_list = 0; - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, oldloc); - loc_copy (&local->loc2, newloc); - - if ((local->loc1.path == NULL) || - (local->loc2.path == NULL)) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, NULL); - return 0; - } - - inode_ctx_get (oldloc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - - STACK_WIND (frame, - unify_ns_rename_cbk, - NS(this), - NS(this)->fops->rename, - oldloc, - newloc); - return 0; -} - -/** - * unify_link_cbk - - */ -int32_t -unify_link_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf) -{ - unify_local_t *local = frame->local; - - if (op_ret >= 0) - local->stbuf = *buf; - local->stbuf.st_ino = local->st_ino; - - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, &local->stbuf); - - return 0; -} - -/** - * unify_ns_link_cbk - - */ -int32_t -unify_ns_link_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct stat *buf) -{ - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - int16_t *list = local->list; - int16_t index = 0; - - if (op_ret == -1) { - /* No need to send link request to other servers, - * as namespace action failed - */ - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s -> %s): %s", - local->loc1.path, local->loc2.path, - strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, buf); - return 0; - } - - /* Update inode for this entry */ - local->op_ret = 0; - local->st_ino = buf->st_ino; - - /* Send link request to the node now */ - for (index = 0; list[index] != -1; index++) { - char need_break = (list[index+1] == -1); - if (priv->xl_array[list[index]] != NS (this)) { - STACK_WIND (frame, - unify_link_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->link, - &local->loc1, - &local->loc2); - break; - } - if (need_break) - break; - } - - return 0; -} - -/** - * unify_link - - */ -int32_t -unify_link (call_frame_t *frame, - xlator_t *this, - loc_t *oldloc, - loc_t *newloc) -{ - unify_local_t *local = NULL; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (oldloc); - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (newloc); - - /* Initialization */ - INIT_LOCAL (frame, local); - - loc_copy (&local->loc1, oldloc); - loc_copy (&local->loc2, newloc); - - inode_ctx_get (oldloc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - - STACK_WIND (frame, - unify_ns_link_cbk, - NS(this), - NS(this)->fops->link, - oldloc, - newloc); - - return 0; -} - - -/** - * unify_checksum_cbk - - */ -int32_t -unify_checksum_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - uint8_t *fchecksum, - uint8_t *dchecksum) -{ - STACK_UNWIND (frame, op_ret, op_errno, fchecksum, dchecksum); - - return 0; -} - -/** - * unify_checksum - - */ -int32_t -unify_checksum (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t flag) -{ - STACK_WIND (frame, - unify_checksum_cbk, - NS(this), - NS(this)->fops->checksum, - loc, - flag); - - return 0; -} - - -/** - * unify_finodelk_cbk - - */ -int -unify_finodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -} - -/** - * unify_finodelk - */ -int -unify_finodelk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, int cmd, struct flock *flock) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_finodelk_cbk, - child, child->fops->finodelk, - volume, fd, cmd, flock); - - return 0; -} - - - -/** - * unify_fentrylk_cbk - - */ -int -unify_fentrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -} - -/** - * unify_fentrylk - */ -int -unify_fentrylk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, const char *basename, - entrylk_cmd cmd, entrylk_type type) - -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_fentrylk_cbk, - child, child->fops->fentrylk, - volume, fd, basename, cmd, type); - - return 0; -} - - - -/** - * unify_fxattrop_cbk - - */ -int -unify_fxattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, dict_t *xattr) -{ - STACK_UNWIND (frame, op_ret, op_errno, xattr); - return 0; -} - -/** - * unify_fxattrop - */ -int -unify_fxattrop (call_frame_t *frame, xlator_t *this, - fd_t *fd, gf_xattrop_flags_t optype, dict_t *xattr) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_fxattrop_cbk, - child, child->fops->fxattrop, - fd, optype, xattr); - - return 0; -} - - -/** - * unify_inodelk_cbk - - */ -int -unify_inodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -} - - -/** - * unify_inodelk - */ -int -unify_inodelk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, int cmd, struct flock *flock) -{ - xlator_t *child = NULL; - - child = unify_loc_subvol (loc, this); - - STACK_WIND (frame, unify_inodelk_cbk, - child, child->fops->inodelk, - volume, loc, cmd, flock); - - return 0; -} - - - -/** - * unify_entrylk_cbk - - */ -int -unify_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno) -{ - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -} - -/** - * unify_entrylk - */ -int -unify_entrylk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, const char *basename, - entrylk_cmd cmd, entrylk_type type) - -{ - xlator_t *child = NULL; - - child = unify_loc_subvol (loc, this); - - STACK_WIND (frame, unify_entrylk_cbk, - child, child->fops->entrylk, - volume, loc, basename, cmd, type); - - return 0; -} - - - -/** - * unify_xattrop_cbk - - */ -int -unify_xattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, dict_t *xattr) -{ - STACK_UNWIND (frame, op_ret, op_errno, xattr); - return 0; -} - -/** - * unify_xattrop - */ -int -unify_xattrop (call_frame_t *frame, xlator_t *this, - loc_t *loc, gf_xattrop_flags_t optype, dict_t *xattr) -{ - xlator_t *child = NULL; - - child = unify_loc_subvol (loc, this); - - STACK_WIND (frame, unify_xattrop_cbk, - child, child->fops->xattrop, - loc, optype, xattr); - - return 0; -} - -int -unify_forget (xlator_t *this, - inode_t *inode) -{ - int16_t *list = NULL; - uint64_t tmp_list = 0; - - if (inode->st_mode && (!S_ISDIR(inode->st_mode))) { - inode_ctx_get (inode, this, &tmp_list); - if (tmp_list) { - list = (int16_t *)(long)tmp_list; - FREE (list); - } - } - - return 0; -} - -/** - * notify - */ -int32_t -notify (xlator_t *this, - int32_t event, - void *data, - ...) -{ - unify_private_t *priv = this->private; - struct sched_ops *sched = NULL; - - if (!priv) { - return 0; - } - - sched = priv->sched_ops; - if (!sched) { - gf_log (this->name, GF_LOG_CRITICAL, "No scheduler :O"); - raise (SIGTERM); - return 0; - } - if (priv->namespace == data) { - if (event == GF_EVENT_CHILD_UP) { - sched->notify (this, event, data); - } - return 0; - } - - switch (event) - { - case GF_EVENT_CHILD_UP: - { - /* Call scheduler's update () to enable it for scheduling */ - sched->notify (this, event, data); - - LOCK (&priv->lock); - { - /* Increment the inode's generation, which is - used for self_heal */ - ++priv->inode_generation; - ++priv->num_child_up; - } - UNLOCK (&priv->lock); - - if (!priv->is_up) { - default_notify (this, event, data); - priv->is_up = 1; - } - } - break; - case GF_EVENT_CHILD_DOWN: - { - /* Call scheduler's update () to disable the child node - * for scheduling - */ - sched->notify (this, event, data); - LOCK (&priv->lock); - { - --priv->num_child_up; - } - UNLOCK (&priv->lock); - - if (priv->num_child_up == 0) { - /* Send CHILD_DOWN to upper layer */ - default_notify (this, event, data); - priv->is_up = 0; - } - } - break; - - default: - { - default_notify (this, event, data); - } - break; - } - - return 0; -} - -/** - * init - This function is called first in the xlator, while initializing. - * All the config file options are checked and appropriate flags are set. - * - * @this - - */ -int32_t -init (xlator_t *this) -{ - int32_t ret = 0; - int32_t count = 0; - data_t *scheduler = NULL; - data_t *data = NULL; - xlator_t *ns_xl = NULL; - xlator_list_t *trav = NULL; - xlator_list_t *xlparent = NULL; - xlator_list_t *parent = NULL; - unify_private_t *_private = NULL; - - /* Check for number of child nodes, if there is no child nodes, exit */ - if (!this->children) { - gf_log (this->name, GF_LOG_ERROR, - "No child nodes specified. check \"subvolumes \" " - "option in volfile"); - return -1; - } - - if (!this->parents) { - gf_log (this->name, GF_LOG_WARNING, - "dangling volume. check volfile "); - } - - /* Check for 'scheduler' in volume */ - scheduler = dict_get (this->options, "scheduler"); - if (!scheduler) { - gf_log (this->name, GF_LOG_ERROR, - "\"option scheduler <x>\" is missing in volfile"); - return -1; - } - - /* Setting "option namespace <node>" */ - data = dict_get (this->options, "namespace"); - if(!data) { - gf_log (this->name, GF_LOG_CRITICAL, - "namespace option not specified, Exiting"); - return -1; - } - /* Search namespace in the child node, if found, exit */ - trav = this->children; - while (trav) { - if (strcmp (trav->xlator->name, data->data) == 0) - break; - trav = trav->next; - } - if (trav) { - gf_log (this->name, GF_LOG_CRITICAL, - "namespace node used as a subvolume, Exiting"); - return -1; - } - - /* Search for the namespace node, if found, continue */ - ns_xl = this->next; - while (ns_xl) { - if (strcmp (ns_xl->name, data->data) == 0) - break; - ns_xl = ns_xl->next; - } - if (!ns_xl) { - gf_log (this->name, GF_LOG_CRITICAL, - "namespace node not found in volfile, Exiting"); - return -1; - } - - gf_log (this->name, GF_LOG_DEBUG, - "namespace node specified as %s", data->data); - - _private = CALLOC (1, sizeof (*_private)); - ERR_ABORT (_private); - _private->sched_ops = get_scheduler (this, scheduler->data); - if (!_private->sched_ops) { - gf_log (this->name, GF_LOG_CRITICAL, - "Error while loading scheduler. Exiting"); - FREE (_private); - return -1; - } - - if (ns_xl->parents) { - gf_log (this->name, GF_LOG_CRITICAL, - "Namespace node should not be a child of any other node. Exiting"); - FREE (_private); - return -1; - } - - _private->namespace = ns_xl; - - /* update _private structure */ - { - count = 0; - trav = this->children; - /* Get the number of child count */ - while (trav) { - count++; - trav = trav->next; - } - - gf_log (this->name, GF_LOG_DEBUG, - "Child node count is %d", count); - - _private->child_count = count; - if (count == 1) { - /* TODO: Should I error out here? */ - gf_log (this->name, GF_LOG_CRITICAL, - "WARNING: You have defined only one " - "\"subvolumes\" for unify volume. It may not " - "be the desired config, review your volume " - "volfile. If this is how you are testing it," - " you may hit some performance penalty"); - } - - _private->xl_array = CALLOC (1, - sizeof (xlator_t) * (count + 1)); - ERR_ABORT (_private->xl_array); - - count = 0; - trav = this->children; - while (trav) { - _private->xl_array[count++] = trav->xlator; - trav = trav->next; - } - _private->xl_array[count] = _private->namespace; - - /* self-heal part, start with generation '1' */ - _private->inode_generation = 1; - /* Because, Foreground part is tested well */ - _private->self_heal = ZR_UNIFY_FG_SELF_HEAL; - data = dict_get (this->options, "self-heal"); - if (data) { - if (strcasecmp (data->data, "off") == 0) - _private->self_heal = ZR_UNIFY_SELF_HEAL_OFF; - - if (strcasecmp (data->data, "foreground") == 0) - _private->self_heal = ZR_UNIFY_FG_SELF_HEAL; - - if (strcasecmp (data->data, "background") == 0) - _private->self_heal = ZR_UNIFY_BG_SELF_HEAL; - } - - /* optimist - ask bulde for more about it */ - data = dict_get (this->options, "optimist"); - if (data) { - if (gf_string2boolean (data->data, - &_private->optimist) == -1) { - gf_log (this->name, GF_LOG_ERROR, - "optimist excepts only boolean " - "options"); - } - } - - LOCK_INIT (&_private->lock); - } - - /* Now that everything is fine. */ - this->private = (void *)_private; - { - /* Initialize scheduler, if everything else is successful */ - ret = _private->sched_ops->init (this); - if (ret == -1) { - gf_log (this->name, GF_LOG_CRITICAL, - "Initializing scheduler failed, Exiting"); - FREE (_private); - return -1; - } - - ret = 0; - - /* This section is required because some fops may look - * for 'xl->parent' variable - */ - xlparent = CALLOC (1, sizeof (*xlparent)); - xlparent->xlator = this; - if (!ns_xl->parents) { - ns_xl->parents = xlparent; - } else { - parent = ns_xl->parents; - while (parent->next) - parent = parent->next; - parent->next = xlparent; - } - /* Initialize the namespace volume */ - if (!ns_xl->ready) { - ret = xlator_tree_init (ns_xl); - if (ret) { - gf_log (this->name, GF_LOG_ERROR, - "initializing namespace node failed, " - "Exiting"); - FREE (_private); - return -1; - } - } - } - - /* Tell namespace node that init is done */ - ns_xl->notify (ns_xl, GF_EVENT_PARENT_UP, this); - - return 0; -} - -/** - * fini - Free all the allocated memory - */ -void -fini (xlator_t *this) -{ - unify_private_t *priv = this->private; - priv->sched_ops->fini (this); - this->private = NULL; - LOCK_DESTROY (&priv->lock); - FREE (priv->xl_array); - FREE (priv); - return; -} - - -struct xlator_fops fops = { - .stat = unify_stat, - .chmod = unify_chmod, - .readlink = unify_readlink, - .mknod = unify_mknod, - .mkdir = unify_mkdir, - .unlink = unify_unlink, - .rmdir = unify_rmdir, - .symlink = unify_symlink, - .rename = unify_rename, - .link = unify_link, - .chown = unify_chown, - .truncate = unify_truncate, - .create = unify_create, - .open = unify_open, - .readv = unify_readv, - .writev = unify_writev, - .statfs = unify_statfs, - .flush = unify_flush, - .fsync = unify_fsync, - .setxattr = unify_setxattr, - .getxattr = unify_getxattr, - .removexattr = unify_removexattr, - .opendir = unify_opendir, - .readdir = unify_readdir, - .fsyncdir = unify_fsyncdir, - .access = unify_access, - .ftruncate = unify_ftruncate, - .fstat = unify_fstat, - .lk = unify_lk, - .fchown = unify_fchown, - .fchmod = unify_fchmod, - .utimens = unify_utimens, - .lookup = unify_lookup, - .getdents = unify_getdents, - .checksum = unify_checksum, - .inodelk = unify_inodelk, - .finodelk = unify_finodelk, - .entrylk = unify_entrylk, - .fentrylk = unify_fentrylk, - .xattrop = unify_xattrop, - .fxattrop = unify_fxattrop -}; - -struct xlator_mops mops = { -}; - -struct xlator_cbks cbks = { - .forget = unify_forget, -}; - -struct volume_options options[] = { - { .key = { "namespace" }, - .type = GF_OPTION_TYPE_XLATOR - }, - { .key = { "scheduler" }, - .value = { "alu", "rr", "random", "nufa", "switch" }, - .type = GF_OPTION_TYPE_STR - }, - { .key = {"self-heal"}, - .value = { "foreground", "background", "off" }, - .type = GF_OPTION_TYPE_STR - }, - /* TODO: remove it some time later */ - { .key = {"optimist"}, - .type = GF_OPTION_TYPE_BOOL - }, - - { .key = {NULL} }, -}; diff --git a/xlators/cluster/unify/src/unify.h b/xlators/cluster/unify/src/unify.h deleted file mode 100644 index da2f1e93b..000000000 --- a/xlators/cluster/unify/src/unify.h +++ /dev/null @@ -1,132 +0,0 @@ -/* - Copyright (c) 2006-2009 Z RESEARCH, Inc. <http://www.zresearch.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. -*/ - -#ifndef _CONFIG_H -#define _CONFIG_H -#include "config.h" -#endif - -#ifndef _UNIFY_H -#define _UNIFY_H - -#include "scheduler.h" -#include "list.h" - -#define MAX_DIR_ENTRY_STRING (32 * 1024) - -#define ZR_UNIFY_SELF_HEAL_OFF 0 -#define ZR_UNIFY_FG_SELF_HEAL 1 -#define ZR_UNIFY_BG_SELF_HEAL 2 - -/* Sometimes one should use completely random numbers.. its good :p */ -#define UNIFY_SELF_HEAL_GETDENTS_COUNT 1024 - -#define NS(xl) (((unify_private_t *)xl->private)->namespace) - -/* This is used to allocate memory for local structure */ -#define INIT_LOCAL(fr, loc) \ -do { \ - loc = CALLOC (1, sizeof (unify_local_t)); \ - ERR_ABORT (loc); \ - if (!loc) { \ - STACK_UNWIND (fr, -1, ENOMEM); \ - return 0; \ - } \ - fr->local = loc; \ - loc->op_ret = -1; \ - loc->op_errno = ENOENT; \ -} while (0) - - - -struct unify_private { - /* Update this structure depending on requirement */ - void *scheduler; /* THIS SHOULD BE THE FIRST VARIABLE, - if xlator is using scheduler */ - struct sched_ops *sched_ops; /* Scheduler options */ - xlator_t *namespace; /* ptr to namespace xlator */ - xlator_t **xl_array; - gf_boolean_t optimist; - int16_t child_count; - int16_t num_child_up; - uint8_t self_heal; - uint8_t is_up; - uint64_t inode_generation; - gf_lock_t lock; -}; -typedef struct unify_private unify_private_t; - -struct unify_self_heal_struct { - uint8_t dir_checksum[ZR_FILENAME_MAX]; - uint8_t ns_dir_checksum[ZR_FILENAME_MAX]; - uint8_t file_checksum[ZR_FILENAME_MAX]; - uint8_t ns_file_checksum[ZR_FILENAME_MAX]; - off_t *offset_list; - int *count_list; - dir_entry_t **entry_list; -}; - - -struct _unify_local_t { - int32_t call_count; - int32_t op_ret; - int32_t op_errno; - mode_t mode; - off_t offset; - dev_t dev; - uid_t uid; - gid_t gid; - int32_t flags; - int32_t entry_count; - int32_t count; // dir_entry_t count; - fd_t *fd; - struct stat stbuf; - struct statvfs statvfs_buf; - struct timespec tv[2]; - char *name; - int32_t revalidate; - - ino_t st_ino; - nlink_t st_nlink; - - dict_t *dict; - - int16_t *list; - int16_t *new_list; /* Used only in case of rename */ - int16_t index; - - int32_t failed; - int32_t return_eio; /* Used in case of different st-mode - present for a given path */ - - uint64_t inode_generation; /* used to store the per directory - * inode_generation. Got from inode's ctx - * of directory inodes - */ - - struct unify_self_heal_struct *sh_struct; - loc_t loc1, loc2; -}; -typedef struct _unify_local_t unify_local_t; - -int32_t zr_unify_self_heal (call_frame_t *frame, - xlator_t *this, - unify_local_t *local); - -#endif /* _UNIFY_H */ |