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authorGaurav Kumar Garg <ggarg@redhat.com>2015-03-10 15:04:59 +0530
committerVijay Bellur <vbellur@redhat.com>2015-03-18 18:34:07 -0700
commitd236b01a8bf68b83c76ea1cfa8351833e19695f7 (patch)
treeee088fec3111b70dbf90c2af7fa7b43d6e97e019 /xlators/mgmt/glusterd/src/glusterd-bitrot.c
parent7c4461329bba38b72536ee71a8172bc861ddf890 (diff)
cli/glusterd: cli command implementation for bitrot features
CLI command for bitrot features. volume bitrot <volname> enable|disable Above command will enable/disable bitrot feature for particular volume. BUG: 1170075 Change-Id: Ie84002ef7f479a285688fdae99c7afa3e91b8b99 Signed-off-by: Gaurav Kumar Garg <ggarg@redhat.com> Signed-off-by: Anand nekkunti <anekkunt@redhat.com> Signed-off-by: Dominic P Geevarghese <dgeevarg@redhat.com> Reviewed-on: http://review.gluster.org/9866 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-bitrot.c')
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-bitrot.c385
1 files changed, 385 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-bitrot.c b/xlators/mgmt/glusterd/src/glusterd-bitrot.c
new file mode 100644
index 0000000..44fefe8
--- /dev/null
+++ b/xlators/mgmt/glusterd/src/glusterd-bitrot.c
@@ -0,0 +1,385 @@
+/*
+ Copyright (c) 2011-2012 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 "common-utils.h"
+#include "cli1-xdr.h"
+#include "xdr-generic.h"
+#include "glusterd.h"
+#include "glusterd-op-sm.h"
+#include "glusterd-store.h"
+#include "glusterd-utils.h"
+#include "glusterd-volgen.h"
+#include "run.h"
+#include "syscall.h"
+#include "byte-order.h"
+#include "compat-errno.h"
+
+#include <sys/wait.h>
+#include <dlfcn.h>
+
+const char *gd_bitrot_op_list[GF_BITROT_OPTION_TYPE_MAX] = {
+ [GF_BITROT_OPTION_TYPE_NONE] = "none",
+ [GF_BITROT_OPTION_TYPE_ENABLE] = "enable",
+ [GF_BITROT_OPTION_TYPE_DISABLE] = "disable",
+ [GF_BITROT_OPTION_TYPE_SCRUB_THROTTLE] = "scrub-throttle",
+ [GF_BITROT_OPTION_TYPE_SCRUB_FREQ] = "scrub-frequency",
+ [GF_BITROT_OPTION_TYPE_SCRUB] = "scrub",
+};
+
+int
+__glusterd_handle_bitrot (rpcsvc_request_t *req)
+{
+ int32_t ret = -1;
+ gf_cli_req cli_req = { {0,} };
+ dict_t *dict = NULL;
+ glusterd_op_t cli_op = GD_OP_BITROT;
+ char *volname = NULL;
+ int32_t type = 0;
+ char msg[2048] = {0,};
+ xlator_t *this = NULL;
+ glusterd_conf_t *conf = NULL;
+
+ GF_ASSERT (req);
+
+ this = THIS;
+ GF_ASSERT (this);
+
+ conf = this->private;
+ GF_ASSERT (conf);
+
+ ret = xdr_to_generic (req->msg[0], &cli_req, (xdrproc_t)xdr_gf_cli_req);
+ if (ret < 0) {
+ req->rpc_err = GARBAGE_ARGS;
+ goto out;
+ }
+
+ if (cli_req.dict.dict_len) {
+ /* Unserialize the dictionary */
+ dict = dict_new ();
+
+ ret = dict_unserialize (cli_req.dict.dict_val,
+ cli_req.dict.dict_len,
+ &dict);
+ if (ret < 0) {
+ gf_log (this->name, GF_LOG_ERROR, "failed to "
+ "unserialize req-buffer to dictionary");
+ snprintf (msg, sizeof (msg), "Unable to decode the "
+ "command");
+ goto out;
+ } else {
+ dict->extra_stdfree = cli_req.dict.dict_val;
+ }
+ }
+
+ ret = dict_get_str (dict, "volname", &volname);
+ if (ret) {
+ snprintf (msg, sizeof (msg), "Unable to get volume name");
+ gf_log (this->name, GF_LOG_ERROR, "Unable to get volume name, "
+ "while handling bitrot command");
+ goto out;
+ }
+
+ ret = dict_get_int32 (dict, "type", &type);
+ if (ret) {
+ snprintf (msg, sizeof (msg), "Unable to get type of command");
+ gf_log (this->name, GF_LOG_ERROR, "Unable to get type of cmd, "
+ "while handling bitrot command");
+ goto out;
+ }
+
+ if (conf->op_version < GD_OP_VERSION_3_7_0) {
+ snprintf (msg, sizeof (msg), "Cannot execute command. The "
+ "cluster is operating at version %d. Bitrot command "
+ "%s is unavailable in this version", conf->op_version,
+ gd_bitrot_op_list[type]);
+ ret = -1;
+ goto out;
+ }
+
+ ret = glusterd_op_begin_synctask (req, GD_OP_BITROT, dict);
+
+out:
+ if (ret) {
+ if (msg[0] == '\0')
+ snprintf (msg, sizeof (msg), "Bitrot operation failed");
+ ret = glusterd_op_send_cli_response (cli_op, ret, 0, req,
+ dict, msg);
+ }
+
+ return ret;
+}
+
+int
+glusterd_handle_bitrot (rpcsvc_request_t *req)
+{
+ return glusterd_big_locked_handler (req, __glusterd_handle_bitrot);
+}
+
+static int
+glusterd_bitrot_enable (glusterd_volinfo_t *volinfo, char **op_errstr)
+{
+ int32_t ret = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+
+ GF_VALIDATE_OR_GOTO (this->name, volinfo, out);
+ GF_VALIDATE_OR_GOTO (this->name, op_errstr, out);
+
+ if (glusterd_is_volume_started (volinfo) == 0) {
+ *op_errstr = gf_strdup ("Volume is stopped, start volume "
+ "to enable bitrot.");
+ ret = -1;
+ goto out;
+ }
+
+ ret = glusterd_is_bitrot_enabled (volinfo);
+ if (ret) {
+ *op_errstr = gf_strdup ("Bitrot is already enabled");
+ ret = -1;
+ goto out;
+ }
+
+ ret = dict_set_dynstr_with_alloc (volinfo->dict, VKEY_FEATURES_BITROT,
+ "on");
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "dict set failed");
+ goto out;
+ }
+
+ ret = 0;
+out:
+ if (ret && op_errstr && !*op_errstr)
+ gf_asprintf (op_errstr, "Enabling bitrot on volume %s has been "
+ "unsuccessful", volinfo->volname);
+ return ret;
+}
+
+static int
+glusterd_bitrot_disable (glusterd_volinfo_t *volinfo, char **op_errstr)
+{
+ int32_t ret = -1;
+ xlator_t *this = NULL;
+
+ GF_VALIDATE_OR_GOTO (this->name, volinfo, out);
+ GF_VALIDATE_OR_GOTO (this->name, op_errstr, out);
+
+ ret = dict_set_dynstr_with_alloc (volinfo->dict, VKEY_FEATURES_BITROT,
+ "off");
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "dict set failed");
+ goto out;
+ }
+
+ ret = 0;
+out:
+ if (ret && op_errstr && !*op_errstr)
+ gf_asprintf (op_errstr, "Disabling bitrot on volume %s has "
+ "been unsuccessful", volinfo->volname);
+ return ret;
+}
+
+static int
+glusterd_manage_bitrot (int opcode)
+{
+ int ret = -1;
+ xlator_t *this = NULL;
+ glusterd_conf_t *priv = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+
+ priv = this->private;
+ GF_ASSERT (priv);
+
+ switch (opcode) {
+ case GF_BITROT_OPTION_TYPE_ENABLE:
+ /* TO DO:
+ * Start bitd service. once bitd volfile generation patch
+ * merge or this patch become dependent of bitd volfile
+ * generation patch below comment will remove.
+ * http://review.gluster.org/#/c/9710/
+ */
+ /*ret = priv->bitd_svc.manager (&(priv->bitd_svc),
+ NULL, PROC_START);*/
+ case GF_BITROT_OPTION_TYPE_DISABLE:
+
+ /* TO DO:
+ * Stop bitd service. once bitd volfile generation patch
+ * merge or this patch become dependent of bitd volfile
+ * generation patch below comment will remove.
+ * http://review.gluster.org/#/c/9710/
+ */
+
+ /*if (glusterd_all_volumes_with_bitrot_stopped ())
+ ret = glusterd_svc_stop (&(priv->bitd_svc),
+ SIGTERM);
+ */
+ ret = 0;
+ break;
+ default:
+ ret = 0;
+ break;
+ }
+
+ return ret;
+
+}
+
+int
+glusterd_op_bitrot (dict_t *dict, char **op_errstr, dict_t *rsp_dict)
+{
+ glusterd_volinfo_t *volinfo = NULL;
+ int32_t ret = -1;
+ char *volname = NULL;
+ int type = -1;
+ glusterd_conf_t *priv = NULL;
+ xlator_t *this = NULL;
+
+ GF_ASSERT (dict);
+ GF_ASSERT (op_errstr);
+
+ this = THIS;
+ GF_ASSERT (this);
+ priv = this->private;
+ GF_ASSERT (priv);
+
+ ret = dict_get_str (dict, "volname", &volname);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Unable to get volume name");
+ goto out;
+ }
+
+ ret = glusterd_volinfo_find (volname, &volinfo);
+ if (ret) {
+ gf_asprintf (op_errstr, FMTSTR_CHECK_VOL_EXISTS, volname);
+ goto out;
+ }
+
+ ret = dict_get_int32 (dict, "type", &type);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Unable to get type from "
+ "dict");
+ goto out;
+ }
+
+ switch (type) {
+ case GF_BITROT_OPTION_TYPE_ENABLE:
+ ret = glusterd_bitrot_enable (volinfo, op_errstr);
+ if (ret < 0)
+ goto out;
+ break;
+
+ case GF_BITROT_OPTION_TYPE_DISABLE:
+ ret = glusterd_bitrot_disable (volinfo, op_errstr);
+ if (ret < 0)
+ goto out;
+
+ break;
+ default:
+ gf_asprintf (op_errstr, "Bitrot command failed. Invalid "
+ "opcode");
+ ret = -1;
+ goto out;
+ }
+
+ ret = glusterd_manage_bitrot (type);
+ if (ret)
+ goto out;
+
+ ret = glusterd_create_volfiles_and_notify_services (volinfo);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Unable to re-create "
+ "volfiles");
+ ret = -1;
+ goto out;
+ }
+
+ ret = glusterd_store_volinfo (volinfo,
+ GLUSTERD_VOLINFO_VER_AC_INCREMENT);
+ if (ret) {
+ gf_log (this->name, GF_LOG_DEBUG, "Failed to store volinfo for "
+ "bitrot");
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+int
+glusterd_op_stage_bitrot (dict_t *dict, char **op_errstr, dict_t *rsp_dict)
+{
+ int ret = 0;
+ char *volname = NULL;
+ int type = 0;
+ xlator_t *this = NULL;
+ glusterd_conf_t *priv = NULL;
+ glusterd_volinfo_t *volinfo = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ priv = this->private;
+ GF_ASSERT (priv);
+
+ GF_ASSERT (dict);
+ GF_ASSERT (op_errstr);
+
+ ret = dict_get_str (dict, "volname", &volname);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Unable to get volume name");
+ goto out;
+ }
+
+ ret = glusterd_volinfo_find (volname, &volinfo);
+ if (ret) {
+ gf_asprintf (op_errstr, FMTSTR_CHECK_VOL_EXISTS, volname);
+ goto out;
+ }
+
+ if (!glusterd_is_volume_started (volinfo)) {
+ *op_errstr = gf_strdup ("Volume is stopped, start volume "
+ "before executing bit rot command.");
+ ret = -1;
+ goto out;
+ }
+
+ ret = dict_get_int32 (dict, "type", &type);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Unable to get type for "
+ "operation");
+
+ *op_errstr = gf_strdup ("Staging stage failed for bitrot "
+ "operation.");
+ goto out;
+ }
+
+
+ if ((GF_BITROT_OPTION_TYPE_ENABLE != type) &&
+ (glusterd_is_bitrot_enabled (volinfo) == 0)) {
+ ret = -1;
+ gf_asprintf (op_errstr, "Bitrot is not enabled on volume %s",
+ volname);
+ goto out;
+ }
+
+ out:
+ if (ret && op_errstr && *op_errstr)
+ gf_log (this->name, GF_LOG_ERROR, "%s", *op_errstr);
+ gf_log (this->name, GF_LOG_DEBUG, "Returning %d", ret);
+
+ return ret;
+}