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-rw-r--r--xlators/cluster/afr/src/afr-self-heal-entry.c2787
1 files changed, 506 insertions, 2281 deletions
diff --git a/xlators/cluster/afr/src/afr-self-heal-entry.c b/xlators/cluster/afr/src/afr-self-heal-entry.c
index 00f1a9cb91b..9605d69f417 100644
--- a/xlators/cluster/afr/src/afr-self-heal-entry.c
+++ b/xlators/cluster/afr/src/afr-self-heal-entry.c
@@ -1,5 +1,5 @@
/*
- Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
+ Copyright (c) 2013 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
@@ -8,2399 +8,624 @@
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 "inode.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 "afr-self-heal.h"
#include "byte-order.h"
-
#include "afr-transaction.h"
-#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;
-
- local = frame->local;
- sh = &local->self_heal;
-
- sh->completion_cbk (frame, this);
-
- return 0;
-}
-
-
-int
-afr_sh_entry_unlock (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_cbk = afr_sh_entry_done;
- afr_unlock (frame, this);
-
- return 0;
-}
-
-
-int
-afr_sh_entry_finish (call_frame_t *frame, xlator_t *this)
-{
- afr_local_t *local = NULL;
-
- local = frame->local;
-
- gf_log (this->name, GF_LOG_TRACE,
- "finishing entry selfheal of %s", local->loc.path);
-
- afr_sh_entry_unlock (frame, this);
-
- 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, dict_t *xdata)
-{
- 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;
-
-
- 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);
-
- 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;
- }
-
- 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;
-
- 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)
-{
- 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;
-}
-
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;
-}
-
-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);
+afr_selfheal_entry_delete (call_frame_t *frame, xlator_t *this, inode_t *dir,
+ const char *name, inode_t *inode, int child,
+ struct afr_reply *replies)
+{
+ afr_private_t *priv = NULL;
+ xlator_t *subvol = NULL;
+ int ret = 0;
+ loc_t loc = {0, };
+ char g[64];
+
+ priv = this->private;
+
+ subvol = priv->children[child];
+
+ loc.parent = inode_ref (dir);
+ uuid_copy (loc.pargfid, dir->gfid);
+ loc.name = name;
+ loc.inode = inode_ref (inode);
+
+ if (replies[child].valid && replies[child].op_ret == 0) {
+ switch (replies[child].poststat.ia_type) {
+ case IA_IFDIR:
+ gf_log (this->name, GF_LOG_WARNING,
+ "expunging dir %s/%s (%s) on %s",
+ uuid_utoa (dir->gfid), name,
+ uuid_utoa_r (replies[child].poststat.ia_gfid, g),
+ subvol->name);
+ ret = syncop_rmdir (subvol, &loc, 1);
+ break;
+ default:
+ gf_log (this->name, GF_LOG_WARNING,
+ "expunging file %s/%s (%s) on %s",
+ uuid_utoa (dir->gfid), name,
+ uuid_utoa_r (replies[child].poststat.ia_gfid, g),
+ subvol->name);
+ ret = syncop_unlink (subvol, &loc);
+ break;
+ }
+ }
+
+ loc_wipe (&loc);
+
+ return ret;
+}
+
+
+int
+afr_selfheal_recreate_entry (call_frame_t *frame, xlator_t *this, int dst,
+ int source, inode_t *dir, const char *name,
+ inode_t *inode, struct afr_reply *replies)
+{
+ int ret = 0;
+ loc_t loc = {0,};
+ loc_t srcloc = {0,};
+ afr_private_t *priv = NULL;
+ dict_t *xdata = NULL;
+ struct iatt *iatt = NULL;
+ char *linkname = NULL;
+ mode_t mode = 0;
+ struct iatt newent = {0,};
+
+ priv = this->private;
+
+ xdata = dict_new();
+ if (!xdata)
+ return -ENOMEM;
+
+ loc.parent = inode_ref (dir);
+ uuid_copy (loc.pargfid, dir->gfid);
+ loc.name = name;
+ loc.inode = inode_ref (inode);
+
+ ret = afr_selfheal_entry_delete (frame, this, dir, name, inode, dst,
+ replies);
+ if (ret)
+ goto out;
+
+ ret = dict_set_static_bin (xdata, "gfid-req",
+ replies[source].poststat.ia_gfid, 16);
+ if (ret)
+ goto out;
+
+ iatt = &replies[source].poststat;
+
+ srcloc.inode = inode_ref (inode);
+ uuid_copy (srcloc.gfid, iatt->ia_gfid);
+
+ mode = st_mode_from_ia (iatt->ia_prot, iatt->ia_type);
+
+ switch (iatt->ia_type) {
+ case IA_IFDIR:
+ ret = syncop_mkdir (priv->children[dst], &loc, mode, xdata, 0);
+ break;
+ case IA_IFLNK:
+ ret = syncop_lookup (priv->children[dst], &srcloc, 0, 0, 0, 0);
+ if (ret == 0) {
+ ret = syncop_link (priv->children[dst], &srcloc, &loc);
+ } else {
+ ret = syncop_readlink (priv->children[source], &srcloc,
+ &linkname, 4096);
+ if (ret <= 0)
+ goto out;
+ ret = syncop_symlink (priv->children[dst], &loc, linkname,
+ xdata, NULL);
+ }
+ break;
+ default:
+ ret = dict_set_int32 (xdata, GLUSTERFS_INTERNAL_FOP_KEY, 1);
+ if (ret)
+ goto out;
+ ret = syncop_mknod (priv->children[dst], &loc, mode,
+ iatt->ia_rdev, xdata, &newent);
+ if (ret == 0 && iatt->ia_size && !newent.ia_size) {
+ /* New entry created. Mark @dst pending on all sources */
+ ret = 1;
+ }
+ break;
+ }
-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
-afr_sh_entry_expunge_entry_done (call_frame_t *frame, xlator_t *this,
- int active_src, int32_t op_ret,
- int32_t op_errno)
-{
- int call_count = 0;
-
- call_count = afr_frame_return (frame);
-
- if (call_count == 0)
- afr_sh_entry_expunge_subvol (frame, this, active_src);
-
- 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));
- }
-
- AFR_STACK_DESTROY (expunge_frame);
- sh->expunge_done (frame, this, active_src, op_ret, op_errno);
-
- 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,
- 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;
- 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_unlink (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,
- "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->unlink,
- &expunge_local->loc, 0, NULL);
-
- return 0;
-}
-
-
-
-int
-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_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 iatt *buf,
- struct iatt *parentbuf)
-{
- 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);
- sh->expunge_done (frame, this, active_src, -1, EINVAL);
-
- 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 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;
- 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);
- sh->expunge_done (frame, this, active_src, op_ret, op_errno);
-
- return 0;
+ if (xdata)
+ dict_unref (xdata);
+ loc_wipe (&loc);
+ loc_wipe (&srcloc);
+ return ret;
}
-int
-afr_sh_entry_expunge_purge (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,
- "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 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;
- 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,
- 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;
- 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)
- sh->expunge_done (frame, this, active_src, op_ret, op_errno);
-
- 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, 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_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)
-{
- 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_expunge_readdir_cbk,
- priv->children[active_src],
- priv->children[active_src]->fops->readdirp,
- sh->healing_fd, sh->block_size, sh->offset, NULL);
-
- return 0;
-}
-
-
-int
-afr_sh_entry_expunge_all (call_frame_t *frame, xlator_t *this)
+static int
+afr_selfheal_newentry_mark (call_frame_t *frame, xlator_t *this, inode_t *inode,
+ int source, struct afr_reply *replies,
+ unsigned char *sources, unsigned char *newentry)
{
- 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;
+ int ret = 0;
+ int i = 0;
+ afr_private_t *priv = NULL;
+ dict_t *xattr = NULL;
+ int **changelog = NULL;
+ int idx = 0;
- sh->offset = 0;
+ priv = this->private;
- if (sh->source == -1) {
- gf_log (this->name, GF_LOG_DEBUG,
- "no active sources for %s to expunge entries",
- local->loc.path);
- goto out;
- }
+ idx = afr_index_for_transaction_type (AFR_DATA_TRANSACTION);
- active_src = next_active_sink (frame, this, sh->active_source);
- sh->active_source = active_src;
+ uuid_copy (inode->gfid, replies[source].poststat.ia_gfid);
- if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) {
- goto out;
- }
+ changelog = afr_matrix_create (priv->child_count, AFR_NUM_CHANGE_LOGS);
- if (active_src == -1) {
- /* completed creating missing files on all subvolumes */
- goto out;
- }
+ xattr = dict_new();
+ if (!xattr)
+ return -ENOMEM;
- gf_log (this->name, GF_LOG_TRACE,
- "expunging entries of %s on %s to other sinks",
- local->loc.path, priv->children[active_src]->name);
+ for (i = 0; i < priv->child_count; i++) {
+ if (!newentry[i])
+ continue;
+ changelog[i][idx] = hton32(1);
+ }
- afr_sh_entry_expunge_subvol (frame, this, active_src);
+ afr_set_pending_dict (priv, xattr, changelog);
- return 0;
-out:
- afr_sh_entry_impunge_all (frame, this);
- return 0;
+ for (i = 0; i < priv->child_count; i++) {
+ if (!sources[i])
+ continue;
+ afr_selfheal_post_op (frame, this, inode, i, xattr);
+ }
+ dict_unref (xattr);
+ return ret;
}
-int
-afr_sh_entry_impunge_entry_done (call_frame_t *frame, xlator_t *this,
- int32_t op_ret, int32_t op_errno)
-{
- int call_count = 0;
- afr_local_t *local = NULL;
- afr_self_heal_t *sh = NULL;
-
- 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);
-
- return 0;
+static int
+__afr_selfheal_heal_dirent (call_frame_t *frame, xlator_t *this, fd_t *fd,
+ char *name, inode_t *inode, int source,
+ unsigned char *sources, unsigned char *healed_sinks,
+ unsigned char *locked_on, struct afr_reply *replies)
+{
+ int ret = 0;
+ afr_private_t *priv = NULL;
+ int i = 0;
+ unsigned char *newentry = NULL;
+
+ priv = this->private;
+ newentry = alloca0 (priv->child_count);
+
+ if (!replies[source].valid)
+ return -EIO;
+
+ for (i = 0; i < priv->child_count; i++) {
+ if (!healed_sinks[i])
+ continue;
+ if (replies[source].op_ret == -1 &&
+ replies[source].op_errno == ENOENT) {
+ ret = afr_selfheal_entry_delete (frame, this, fd->inode,
+ name, inode, i, replies);
+ } else {
+ if (!uuid_compare (replies[i].poststat.ia_gfid,
+ replies[source].poststat.ia_gfid))
+ continue;
+
+ ret = afr_selfheal_recreate_entry (frame, this, i, source,
+ fd->inode, name, inode,
+ replies);
+ if (ret > 0) {
+ newentry[i] = 1;
+ ret = 0;
+ }
+ }
+ if (ret < 0)
+ break;
+ }
+
+ if (AFR_COUNT (newentry, priv->child_count))
+ afr_selfheal_newentry_mark (frame, this, inode, source, replies,
+ sources, newentry);
+ return ret;
}
-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;
- AFR_INIT_SH_FRAME_VALS (impunge_frame, impunge_local, impunge_sh,
- frame, local, sh);
-
- AFR_STACK_DESTROY (impunge_frame);
- sh->impunge_done (frame, this, op_ret, op_errno);
-}
-
-int
-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)
+static int
+__afr_selfheal_merge_dirent (call_frame_t *frame, xlator_t *this, fd_t *fd,
+ char *name, inode_t *inode, unsigned char *sources,
+ unsigned char *healed_sinks, unsigned char *locked_on,
+ struct afr_reply *replies)
{
- 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 ret = 0;
+ afr_private_t *priv = NULL;
+ int i = 0;
+ int source = -1;
-int
-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_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));
- }
-
- call_count = afr_frame_return (setattr_frame);
- if (call_count == 0)
- AFR_STACK_DESTROY (setattr_frame);
- return 0;
-}
+ priv = this->private;
-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:
- if (setattr_frame)
- AFR_STACK_DESTROY (setattr_frame);
- afr_sh_entry_call_impunge_done (impunge_frame, this, 0, op_errno);
- return 0;
-}
+ for (i = 0; i < priv->child_count; i++) {
+ if (replies[i].valid && replies[i].op_ret == 0) {
+ source = i;
+ break;
+ }
+ }
-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 *xdata)
-{
- afr_private_t *priv = NULL;
- afr_local_t *impunge_local = NULL;
- int child_index = 0;
- int call_count = -1;
-
- 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));
-
- LOCK (&impunge_frame->lock);
- {
- impunge_local->op_ret = -1;
- impunge_local->op_errno = op_errno;
- }
- UNLOCK (&impunge_frame->lock);
- }
-
- call_count = afr_frame_return (impunge_frame);
-
- if (call_count == 0) {
- if (impunge_local->op_ret == 0) {
- afr_sh_entry_impunge_setattr (impunge_frame, this);
- } else {
- afr_sh_entry_call_impunge_done (impunge_frame, this,
- -1, impunge_local->op_errno);
- }
- }
- return 0;
-}
+ if (source == -1) {
+ /* entry got deleted in the mean time? */
+ return 0;
+ }
-int
-afr_sh_entry_impunge_perform_xattrop (call_frame_t *impunge_frame,
- xlator_t *this)
-{
- 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;
- int32_t call_count = 0;
- int32_t i = 0;
-
-
- priv = this->private;
- impunge_local = impunge_frame->local;
- impunge_sh = &impunge_local->self_heal;
- active_src = impunge_sh->active_source;
- impunge_local->op_ret = 0;
-
- 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;
- }
-
- afr_set_pending_dict (priv, xattr, impunge_local->pending, active_src,
- LOCAL_LAST);
-
- for (i = 0; i < priv->child_count; i++) {
- if ((impunge_sh->child_errno[i] == EEXIST) &&
- (impunge_local->child_up[i] == 1))
-
- call_count++;
- }
-
- impunge_local->call_count = call_count;
-
- for (i = 0; i < priv->child_count; i++) {
-
- if ((impunge_sh->child_errno[i] == EEXIST)
- && (impunge_local->child_up[i] == 1)) {
-
-
- STACK_WIND_COOKIE (impunge_frame,
- afr_sh_entry_impunge_xattrop_cbk,
- (void *) (long) i,
- priv->children[i],
- priv->children[i]->fops->xattrop,
- &impunge_local->loc,
- GF_XATTROP_ADD_ARRAY, xattr, NULL);
- if (!--call_count)
- break;
- }
- }
-
- if (xattr)
- dict_unref (xattr);
- return 0;
-out:
- afr_sh_entry_call_impunge_done (impunge_frame, this,
- -1, op_errno);
- return 0;
-}
+ for (i = 0; i < priv->child_count; i++) {
+ if (i == source || !healed_sinks[i])
+ continue;
-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;
- }
-
- 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;
-}
+ if (replies[i].op_errno != ENOENT)
+ continue;
-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;
- }
-
- call_count = afr_frame_return (impunge_frame);
- if (call_count == 0)
- afr_sh_entry_call_impunge_done (impunge_frame, this,
- op_ret, op_errno);
-
- return 0;
-}
+ ret = afr_selfheal_recreate_entry (frame, this, i, source,
+ fd->inode, name, inode,
+ replies);
+ }
-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 ret;
}
-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)
+static int
+__afr_selfheal_entry_dirent (call_frame_t *frame, xlator_t *this, fd_t *fd,
+ char *name, inode_t *inode, int source,
+ unsigned char *sources, unsigned char *healed_sinks,
+ unsigned char *locked_on, struct afr_reply *replies)
{
- 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 ret = -1;
-int
-afr_sh_entry_impunge_mknod (call_frame_t *impunge_frame, xlator_t *this,
- int child_index, struct iatt *stbuf)
-{
- 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);
-
- return 0;
+ if (source < 0)
+ ret = __afr_selfheal_merge_dirent (frame, this, fd, name, inode,
+ sources, healed_sinks,
+ locked_on, replies);
+ else
+ ret = __afr_selfheal_heal_dirent (frame, this, fd, name, inode,
+ source, sources, healed_sinks,
+ locked_on, replies);
+ return ret;
}
-
-int
-afr_sh_entry_impunge_mkdir (call_frame_t *impunge_frame, xlator_t *this,
- int child_index, struct iatt *stbuf)
-{
- 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;
-
- 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);
-
- if (dict)
- dict_unref (dict);
-
- return 0;
+static int
+afr_selfheal_entry_dirent (call_frame_t *frame, xlator_t *this, fd_t *fd,
+ int source, unsigned char *sources,
+ unsigned char *healed_sinks, char *name)
+{
+ afr_private_t *priv = NULL;
+ int ret = 0;
+ unsigned char *locked_on = NULL;
+ struct afr_reply *replies = NULL;
+ inode_t *inode = NULL;
+
+ priv = this->private;
+
+ locked_on = alloca0 (priv->child_count);
+
+ replies = alloca0 (priv->child_count * sizeof(*replies));
+
+ ret = afr_selfheal_entrylk (frame, this, fd->inode, this->name,
+ name, locked_on);
+ {
+ if (ret < 2) {
+ ret = -ENOTCONN;
+ goto unlock;
+ }
+
+ inode = afr_selfheal_unlocked_lookup_on (frame, fd->inode, name,
+ replies, locked_on);
+ if (!inode) {
+ ret = -ENOMEM;
+ goto unlock;
+ }
+
+ ret = __afr_selfheal_entry_dirent (frame, this, fd, name, inode,
+ source, sources, healed_sinks,
+ locked_on, replies);
+ }
+unlock:
+ afr_selfheal_unentrylk (frame, this, fd->inode, this->name, name,
+ locked_on);
+ if (inode)
+ inode_unref (inode);
+ return ret;
}
-int
-afr_sh_entry_impunge_symlink (call_frame_t *impunge_frame, xlator_t *this,
- int child_index, const char *linkname)
+static int
+afr_selfheal_entry_do_subvol (call_frame_t *frame, xlator_t *this, fd_t *fd,
+ int child, int source, unsigned char *sources,
+ unsigned char *healed_sinks)
{
- 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;
- }
-
- 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 ret = 0;
+ gf_dirent_t entries;
+ gf_dirent_t *entry = NULL;
+ off_t offset = 0;
+ call_frame_t *iter_frame = NULL;
+ xlator_t *subvol = NULL;
+ afr_private_t *priv = NULL;
+ priv = this->private;
+ subvol = priv->children[child];
-int
-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;
- 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);
+ INIT_LIST_HEAD (&entries.list);
- if (call_count == 0)
- afr_sh_entry_call_impunge_done (impunge_frame, this,
- op_ret, op_errno);
+ iter_frame = afr_copy_frame (frame);
+ if (!iter_frame)
+ return -ENOMEM;
- return 0;
-}
+ while ((ret = syncop_readdir (subvol, fd, 131072, offset, &entries))) {
+ if (ret > 0)
+ ret = 0;
+ list_for_each_entry (entry, &entries.list, list) {
+ offset = entry->d_off;
+ if (!strcmp (entry->d_name, ".") ||
+ !strcmp (entry->d_name, ".."))
+ continue;
-int
-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;
+ if (__is_root_gfid (fd->inode->gfid) &&
+ !strcmp (entry->d_name, GF_REPLICATE_TRASH_DIR))
+ continue;
- priv = this->private;
- impunge_local = impunge_frame->local;
+ ret = afr_selfheal_entry_dirent (iter_frame, this, fd,
+ source, sources,
+ healed_sinks,
+ entry->d_name);
+ AFR_STACK_RESET (iter_frame);
- gf_log (this->name, GF_LOG_DEBUG,
- "unlinking symlink %s with wrong target on %s",
- impunge_local->loc.path,
- priv->children[child_index]->name);
+ if (ret)
+ break;
+ }
- 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);
+ gf_dirent_free (&entries);
+ if (ret)
+ break;
+ }
- return 0;
+ AFR_STACK_DESTROY (iter_frame);
+ return ret;
}
-
-int
-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)
+static int
+afr_selfheal_entry_do (call_frame_t *frame, xlator_t *this, fd_t *fd,
+ int source, unsigned char *sources,
+ unsigned char *healed_sinks,
+ struct afr_reply *locked_replies)
{
- 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) && (!afr_inode_missing(op_errno))) {
- 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 */
-
- if ((op_ret == -1) && (afr_inode_missing(op_errno))) {
- 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 */
-
- goto out;
- } else {
- /*
- * Hah! Sneaky wolf in sheep's clothing!
- */
- afr_sh_entry_impunge_symlink_unlink (impunge_frame, this,
- child_index);
- return 0;
- }
+ int i = 0;
+ afr_private_t *priv = NULL;
+ int ret = 0;
-out:
- LOCK (&impunge_frame->lock);
- {
- call_count = --impunge_local->call_count;
- }
- UNLOCK (&impunge_frame->lock);
+ priv = this->private;
- if (call_count == 0)
- afr_sh_entry_call_impunge_done (impunge_frame, this,
- op_ret, op_errno);
+ gf_log (this->name, GF_LOG_INFO, "performing entry selfheal on %s",
+ uuid_utoa (fd->inode->gfid));
- return 0;
+ for (i = 0; i < priv->child_count; i++) {
+ if (i != source && !healed_sinks[i])
+ continue;
+ ret = afr_selfheal_entry_do_subvol (frame, this, fd, i, source,
+ sources, healed_sinks);
+ if (ret)
+ break;
+ }
+ return ret;
}
-int
-afr_sh_entry_impunge_readlink_sink (call_frame_t *impunge_frame, xlator_t *this,
- int child_index)
+static int
+__afr_selfheal_entry_finalize_source (xlator_t *this, unsigned char *sources,
+ unsigned char *sinks,
+ unsigned char *locked_on,
+ struct afr_reply *replies)
{
- afr_private_t *priv = NULL;
- afr_local_t *impunge_local = NULL;
+ int i = 0;
+ afr_private_t *priv = NULL;
+ int source = -1;
+ int locked_count = 0;
+ int sources_count = 0;
+ int sinks_count = 0;
- priv = this->private;
- impunge_local = impunge_frame->local;
+ priv = this->private;
- gf_log (this->name, GF_LOG_DEBUG,
- "checking symlink target of %s on %s",
- impunge_local->loc.path, priv->children[child_index]->name);
+ locked_count = AFR_COUNT (locked_on, priv->child_count);
+ sources_count = AFR_COUNT (sources, priv->child_count);
+ sinks_count = AFR_COUNT (sinks, priv->child_count);
- 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);
+ if (locked_count == sinks_count || !sources_count) {
+ return -1;
+ }
- 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, 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 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;
+ for (i = 0; i < priv->child_count; i++) {
+ if (sources[i]) {
+ source = i;
+ break;
+ }
+ }
-out:
- 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;
+ return source;
}
-int
-afr_sh_entry_impunge_readlink (call_frame_t *impunge_frame, xlator_t *this,
- int child_index, struct iatt *stbuf)
+static int
+__afr_selfheal_entry_prepare (call_frame_t *frame, xlator_t *this, fd_t *fd,
+ unsigned char *locked_on, unsigned char *sources,
+ unsigned char *sinks, unsigned char *healed_sinks,
+ struct afr_reply *replies, int *source_p)
{
- 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 ret = -1;
+ int source = -1;
+ afr_private_t *priv = NULL;
+ int i = 0;
-int
-afr_sh_entry_impunge_create (call_frame_t *impunge_frame, xlator_t *this,
- int child_index)
-{
- 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;
-}
+ priv = this->private;
-int
-afr_sh_entry_impunge_create_file (call_frame_t *impunge_frame, xlator_t *this,
- int child_index)
-{
- 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;
- }
-
- return 0;
-}
+ ret = afr_selfheal_unlocked_discover (frame, fd->inode, fd->inode->gfid,
+ replies);
+ if (ret)
+ return ret;
-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;
+ ret = afr_selfheal_find_direction (frame, this, replies,
+ AFR_ENTRY_TRANSACTION,
+ locked_on, sources, sinks);
+ if (ret)
+ return ret;
- GF_ASSERT (impunge_sh->child_errno);
+ source = __afr_selfheal_entry_finalize_source (this, sources, sinks,
+ locked_on, replies);
+ if (source < 0) {
+ /* If source is < 0 (typically split-brain), we perform a
+ conservative merge of entries rather than erroring out */
+ }
+ *source_p = source;
- if (child == impunge_sh->active_source)
- goto out;
+ for (i = 0; i < priv->child_count; i++)
+ /* Initialize the healed_sinks[] array optimistically to
+ the intersection of to-be-healed (i.e sinks[]) and
+ the list of servers which are up (i.e locked_on[]).
- if (IA_IFLNK == impunge_sh->entrybuf.ia_type) {
- recreate = _gf_true;
- goto out;
- }
+ As we encounter failures in the healing process, we
+ will unmark the respective servers in the healed_sinks[]
+ array.
+ */
+ healed_sinks[i] = sinks[i] && locked_on[i];
- if (impunge_sh->child_errno[child] == ENOENT)
- recreate = _gf_true;
-out:
- return recreate;
+ return ret;
}
-unsigned int
-afr_sh_recreate_count (afr_self_heal_t *impunge_sh, int *sources,
- unsigned int child_count)
-{
- int count = 0;
- int i = 0;
-
- for (i = 0; i < child_count; i++) {
- if (afr_sh_need_recreate (impunge_sh, i, child_count))
- count++;
- }
-
- return count;
-}
-int
-afr_sh_entry_call_impunge_recreate (call_frame_t *impunge_frame,
- xlator_t *this)
-{
- 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);
+static int
+__afr_selfheal_entry (call_frame_t *frame, xlator_t *this, fd_t *fd,
+ unsigned char *locked_on)
+{
+ afr_private_t *priv = NULL;
+ int ret = -1;
+ unsigned char *sources = NULL;
+ unsigned char *sinks = NULL;
+ unsigned char *data_lock = NULL;
+ unsigned char *healed_sinks = NULL;
+ struct afr_reply *locked_replies = NULL;
+ int source = -1;
+
+ priv = this->private;
+
+ sources = alloca0 (priv->child_count);
+ sinks = alloca0 (priv->child_count);
+ healed_sinks = alloca0 (priv->child_count);
+ data_lock = alloca0 (priv->child_count);
+
+ locked_replies = alloca0 (sizeof (*locked_replies) * priv->child_count);
+
+ ret = afr_selfheal_entrylk (frame, this, fd->inode, this->name, NULL,
+ data_lock);
+ {
+ if (ret < 2) {
+ ret = -ENOTCONN;
+ goto unlock;
+ }
+
+ ret = __afr_selfheal_entry_prepare (frame, this, fd, data_lock,
+ sources, sinks, healed_sinks,
+ locked_replies, &source);
+ }
+unlock:
+ afr_selfheal_unentrylk (frame, this, fd->inode, this->name, NULL,
+ data_lock);
+ if (ret < 0)
+ goto out;
+
+ ret = afr_selfheal_entry_do (frame, this, fd, source, sources,
+ healed_sinks, locked_replies);
+ if (ret)
+ goto out;
+
+ ret = afr_selfheal_undo_pending (frame, this, fd->inode, sources, sinks,
+ healed_sinks, AFR_ENTRY_TRANSACTION,
+ locked_replies, data_lock);
out:
- return 0;
+ return ret;
}
-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_impunge_entry (call_frame_t *frame, xlator_t *this,
- gf_dirent_t *entry)
+static fd_t *
+afr_selfheal_data_opendir (xlator_t *this, inode_t *inode)
{
- 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;
-
- active_src = sh->active_source;
- sh->impunge_done = afr_sh_entry_impunge_entry_done;
-
- if (can_skip_entry_self_heal (entry->d_name, &local->loc)) {
- op_ret = 0;
- goto out;
- }
-
- gf_log (this->name, GF_LOG_TRACE,
- "inspecting existence of %s under %s",
- entry->d_name, local->loc.path);
-
- ret = afr_impunge_frame_create (frame, this, active_src,
- &impunge_frame);
- if (ret) {
- op_errno = -ret;
- goto out;
- }
-
- 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);
- }
+ loc_t loc = {0,};
+ int ret = 0;
+ fd_t *fd = NULL;
- return 0;
-}
+ fd = fd_create (inode, 0);
+ if (!fd)
+ return NULL;
+ loc.inode = inode_ref (inode);
+ uuid_copy (loc.gfid, inode->gfid);
-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;
-
- 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));
- 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);
- }
-
- 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_DEBUG,
- "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);
- }
-
- return 0;
-}
+ ret = syncop_opendir (this, &loc, fd);
+ if (ret) {
+ fd_unref (fd);
+ fd = NULL;
+ } else {
+ fd_bind (fd);
+ }
+ loc_wipe (&loc);
-int
-afr_sh_entry_impunge_subvol (call_frame_t *frame, xlator_t *this)
-{
- afr_private_t *priv = NULL;
- afr_local_t *local = NULL;
- afr_self_heal_t *sh = NULL;
- int32_t active_src = 0;
-
- 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 fd;
}
-int
-afr_sh_entry_impunge_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;
-
- priv = this->private;
- local = frame->local;
- sh = &local->self_heal;
-
- sh->offset = 0;
-
- active_src = next_active_source (frame, this, sh->active_source);
- sh->active_source = active_src;
-
- if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) {
- afr_sh_entry_finish (frame, this);
- return 0;
- }
-
- if (active_src == -1) {
- /* completed creating missing files on all subvolumes */
- afr_sh_entry_erase_pending (frame, this);
- return 0;
- }
-
- 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_impunge_subvol (frame, this);
-
- return 0;
-}
-
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, dict_t *xdata)
+afr_selfheal_entry (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;
- 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,
- "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);
-
- 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);
-
- sh->active_source = -1;
- afr_sh_entry_expunge_all (frame, this);
- }
-
- return 0;
-}
-
-
-int
-afr_sh_entry_open (call_frame_t *frame, xlator_t *this)
-{
- int i = 0;
- int call_count = 0;
-
- int source = -1;
- int *sources = NULL;
+ afr_private_t *priv = NULL;
+ unsigned char *locked_on = NULL;
+ fd_t *fd = NULL;
+ int ret = 0;
- fd_t *fd = NULL;
+ priv = this->private;
- afr_local_t * local = NULL;
- afr_private_t * priv = NULL;
- afr_self_heal_t *sh = NULL;
+ fd = afr_selfheal_data_opendir (this, inode);
+ if (!fd)
+ return -EIO;
- local = frame->local;
- sh = &local->self_heal;
- priv = this->private;
+ locked_on = alloca0 (priv->child_count);
- source = local->self_heal.source;
- sources = local->self_heal.sources;
+ ret = afr_selfheal_tryentrylk (frame, this, inode, priv->sh_domain, NULL,
+ locked_on);
+ {
+ if (ret < 2) {
+ /* Either less than two subvols available, or another
+ selfheal (from another server) is in progress. Skip
+ for now in any case there isn't anything to do.
+ */
+ ret = -ENOTCONN;
+ goto unlock;
+ }
- sh->block_size = priv->sh_readdir_size;
- sh->offset = 0;
+ ret = __afr_selfheal_entry (frame, this, fd, locked_on);
+ }
+unlock:
+ afr_selfheal_unentrylk (frame, this, inode, priv->sh_domain, NULL, locked_on);
- call_count = sh->active_sinks;
- if (source != -1)
- call_count++;
+ if (fd)
+ fd_unref (fd);
- 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--;
- }
-
- /* 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);
-
- if (!--call_count)
- break;
- }
-
- return 0;
-}
-
-
-int
-afr_sh_entry_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 (source != -1)
- sh->success[source] = 1;
-
- 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;
- }
-
- 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);
-
- 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;
-}
-
-
-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;
- 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;
-
- 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);
-
-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;
-}
-
-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;
+ return ret;
}