diff options
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-snapshot.c | 159 | ||||
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-store.c | 32 | ||||
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-store.h | 2 | ||||
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-utils.c | 217 | ||||
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-utils.h | 5 | ||||
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-volgen.c | 125 | ||||
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-volgen.h | 3 | ||||
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd.h | 2 |
8 files changed, 374 insertions, 171 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-snapshot.c b/xlators/mgmt/glusterd/src/glusterd-snapshot.c index b99f2ac89ad..c1967a29ca9 100644 --- a/xlators/mgmt/glusterd/src/glusterd-snapshot.c +++ b/xlators/mgmt/glusterd/src/glusterd-snapshot.c @@ -124,7 +124,6 @@ int glusterd_snapshot_restore (dict_t *dict, char **op_errstr, dict_t *rsp_dict) { int ret = -1; - char *volname = NULL; char *snapname = NULL; xlator_t *this = NULL; glusterd_volinfo_t *snap_volinfo = NULL; @@ -152,7 +151,7 @@ glusterd_snapshot_restore (dict_t *dict, char **op_errstr, dict_t *rsp_dict) snap = glusterd_find_snap_by_name (snapname); if (NULL == snap) { ret = gf_asprintf (op_errstr, "Snap (%s) not found", - snapname); + snapname); if (ret < 0) { goto out; } @@ -195,7 +194,7 @@ glusterd_snapshot_restore (dict_t *dict, char **op_errstr, dict_t *rsp_dict) * failure. */ gf_log (this->name, GF_LOG_ERROR, "Failed to restore " - "snap for %s volume", volname); + "snap for %s", snapname); goto out; } @@ -218,7 +217,7 @@ out: * @param rsp_dict response dictionary * @return Negative value on Failure and 0 in success */ -int +int32_t glusterd_snapshot_restore_prevalidate (dict_t *dict, char **op_errstr, dict_t *rsp_dict) { @@ -1092,11 +1091,13 @@ glusterd_lvm_snapshot_remove (dict_t *rsp_dict, glusterd_volinfo_t *snap_vol) this = THIS; GF_ASSERT (this); - GF_ASSERT (rsp_dict); GF_ASSERT (snap_vol); - if (!snap_vol) { - gf_log (this->name, GF_LOG_ERROR, "snap volinfo is NULL"); + if ((snap_vol->is_snap_volume == _gf_false) && + (uuid_is_null (snap_vol->restored_from_snap))) { + gf_log (this->name, GF_LOG_DEBUG, + "Not a snap volume, or a restored snap volume."); + ret = 0; goto out; } @@ -1113,20 +1114,23 @@ glusterd_lvm_snapshot_remove (dict_t *rsp_dict, glusterd_volinfo_t *snap_vol) brickinfo->hostname, brickinfo->path, snap_vol->snapshot->snapname); - /* Adding missed delete to the dict */ - ret = glusterd_add_missed_snaps_to_dict + if (rsp_dict && + (snap_vol->is_snap_volume == _gf_true)) { + /* Adding missed delete to the dict */ + ret = glusterd_add_missed_snaps_to_dict (rsp_dict, snap_vol, brickinfo, brick_count + 1, GF_SNAP_OPTION_TYPE_DELETE); - if (ret) { - gf_log (this->name, GF_LOG_ERROR, - "Failed to add missed snapshot info " - "for %s:%s in the rsp_dict", - brickinfo->hostname, - brickinfo->path); - goto out; + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to add missed snapshot " + "info for %s:%s in the " + "rsp_dict", brickinfo->hostname, + brickinfo->path); + goto out; + } } continue; @@ -5668,3 +5672,126 @@ out: gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret); return ret; } + +/* This function will restore origin volume to it's snap. + * The restore operation will simply replace the Gluster origin + * volume with the snap volume. + * TODO: Multi-volume delete to be done. + * Cleanup in case of restore failure is pending. + * + * @param orig_vol volinfo of origin volume + * @param snap_vol volinfo of snapshot volume + * + * @return 0 on success and negative value on error + */ +int +gd_restore_snap_volume (dict_t *rsp_dict, + glusterd_volinfo_t *orig_vol, + glusterd_volinfo_t *snap_vol) +{ + int ret = -1; + glusterd_volinfo_t *new_volinfo = NULL; + glusterd_snap_t *snap = NULL; + xlator_t *this = NULL; + glusterd_conf_t *conf = NULL; + glusterd_volinfo_t *temp_volinfo = NULL; + glusterd_volinfo_t *voliter = NULL; + + this = THIS; + GF_ASSERT (this); + GF_ASSERT (rsp_dict); + conf = this->private; + GF_ASSERT (conf); + + GF_VALIDATE_OR_GOTO (this->name, orig_vol, out); + GF_VALIDATE_OR_GOTO (this->name, snap_vol, out); + snap = snap_vol->snapshot; + GF_VALIDATE_OR_GOTO (this->name, snap, out); + + /* Snap volume must be stoped before performing the + * restore operation. + */ + ret = glusterd_stop_volume (snap_vol); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to stop " + "snap volume"); + goto out; + } + + /* Create a new volinfo for the restored volume */ + ret = glusterd_volinfo_dup (snap_vol, &new_volinfo, _gf_true); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to create volinfo"); + goto out; + } + + /* Following entries need to be derived from origin volume. */ + strcpy (new_volinfo->volname, orig_vol->volname); + uuid_copy (new_volinfo->volume_id, orig_vol->volume_id); + new_volinfo->snap_count = orig_vol->snap_count; + new_volinfo->snap_max_hard_limit = orig_vol->snap_max_hard_limit; + uuid_copy (new_volinfo->restored_from_snap, + snap_vol->snapshot->snap_id); + + /* Bump the version of the restored volume, so that nodes * + * which are done can sync during handshake */ + new_volinfo->version = orig_vol->version; + + list_for_each_entry_safe (voliter, temp_volinfo, + &orig_vol->snap_volumes, snapvol_list) { + list_add_tail (&voliter->snapvol_list, + &new_volinfo->snap_volumes); + } + /* Copy the snap vol info to the new_volinfo.*/ + ret = glusterd_snap_volinfo_restore (rsp_dict, new_volinfo, snap_vol); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to restore snap"); + (void)glusterd_volinfo_delete (new_volinfo); + goto out; + } + + ret = glusterd_lvm_snapshot_remove (rsp_dict, orig_vol); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to remove " + "LVM backend"); + (void)glusterd_volinfo_delete (new_volinfo); + goto out; + } + + /* New volinfo always shows the status as created. Therefore + * set the status to the original volume's status. */ + glusterd_set_volume_status (new_volinfo, orig_vol->status); + + /* Once the new_volinfo is completely constructed then delete + * the orinal volinfo + */ + ret = glusterd_volinfo_delete (orig_vol); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to delete volinfo"); + (void)glusterd_volinfo_delete (new_volinfo); + goto out; + } + + list_add_tail (&new_volinfo->vol_list, &conf->volumes); + + /* Now delete the snap entry. As a first step delete the snap + * volume information stored in store. */ + ret = glusterd_snap_remove (rsp_dict, snap, _gf_false, _gf_true); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, "Failed to delete " + "snap %s", snap->snapname); + goto out; + } + + ret = glusterd_store_volinfo (new_volinfo, + GLUSTERD_VOLINFO_VER_AC_INCREMENT); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to store volinfo"); + goto out; + } + + ret = 0; +out: + + return ret; +} diff --git a/xlators/mgmt/glusterd/src/glusterd-store.c b/xlators/mgmt/glusterd/src/glusterd-store.c index 9c04aab50c7..1e39fb27e5f 100644 --- a/xlators/mgmt/glusterd/src/glusterd-store.c +++ b/xlators/mgmt/glusterd/src/glusterd-store.c @@ -525,10 +525,13 @@ int _storeopts (dict_t *this, char *key, data_t *value, void *data) int32_t glusterd_volume_exclude_options_write (int fd, glusterd_volinfo_t *volinfo) { - char *str = NULL; - char buf[PATH_MAX] = {0,}; - int32_t ret = -1; + char *str = NULL; + char buf[PATH_MAX] = ""; + int32_t ret = -1; + xlator_t *this = NULL; + this = THIS; + GF_ASSERT (this); GF_ASSERT (fd > 0); GF_ASSERT (volinfo); @@ -576,7 +579,7 @@ glusterd_volume_exclude_options_write (int fd, glusterd_volinfo_t *volinfo) snprintf (buf, sizeof (buf), "%s", volinfo->parent_volname); ret = gf_store_save_value (fd, GLUSTERD_STORE_KEY_PARENT_VOLNAME, buf); if (ret) { - gf_log (THIS->name, GF_LOG_ERROR, "Failed to store " + gf_log (this->name, GF_LOG_ERROR, "Failed to store " GLUSTERD_STORE_KEY_PARENT_VOLNAME); goto out; } @@ -620,11 +623,11 @@ glusterd_volume_exclude_options_write (int fd, glusterd_volinfo_t *volinfo) goto out; } - snprintf (buf, sizeof (buf), "%d", volinfo->is_volume_restored); - ret = gf_store_save_value (fd, GLUSTERD_STORE_KEY_VOL_IS_RESTORED, buf); + ret = gf_store_save_value (fd, GLUSTERD_STORE_KEY_VOL_RESTORED_SNAP, + uuid_utoa (volinfo->restored_from_snap)); if (ret) { - gf_log (THIS->name, GF_LOG_ERROR, - "Unable to write is_volume_restored"); + gf_log (this->name, GF_LOG_ERROR, + "Unable to write restored_from_snap"); goto out; } @@ -632,14 +635,14 @@ glusterd_volume_exclude_options_write (int fd, glusterd_volinfo_t *volinfo) ret = gf_store_save_value (fd, GLUSTERD_STORE_KEY_SNAP_MAX_HARD_LIMIT, buf); if (ret) { - gf_log (THIS->name, GF_LOG_ERROR, + gf_log (this->name, GF_LOG_ERROR, "Unable to write snap-max-hard-limit"); goto out; } out: if (ret) - gf_log (THIS->name, GF_LOG_ERROR, "Unable to write volume " + gf_log (this->name, GF_LOG_ERROR, "Unable to write volume " "values for %s", volinfo->volname); return ret; } @@ -2417,9 +2420,12 @@ glusterd_store_update_volinfo (glusterd_volinfo_t *volinfo) } else if (!strncmp (key, GLUSTERD_STORE_KEY_SNAP_MAX_HARD_LIMIT, strlen (GLUSTERD_STORE_KEY_SNAP_MAX_HARD_LIMIT))) { volinfo->snap_max_hard_limit = (uint64_t) atoll (value); - } else if (!strncmp (key, GLUSTERD_STORE_KEY_VOL_IS_RESTORED, - strlen (GLUSTERD_STORE_KEY_VOL_IS_RESTORED))) { - volinfo->is_volume_restored = atoi (value); + } else if (!strncmp (key, GLUSTERD_STORE_KEY_VOL_RESTORED_SNAP, + strlen (GLUSTERD_STORE_KEY_VOL_RESTORED_SNAP))) { + ret = uuid_parse (value, volinfo->restored_from_snap); + if (ret) + gf_log ("", GF_LOG_WARNING, + "failed to parse restored snap's uuid"); } else if (!strncmp (key, GLUSTERD_STORE_KEY_PARENT_VOLNAME, strlen (GLUSTERD_STORE_KEY_PARENT_VOLNAME))) { strncpy (volinfo->parent_volname, value, sizeof(volinfo->parent_volname) - 1); diff --git a/xlators/mgmt/glusterd/src/glusterd-store.h b/xlators/mgmt/glusterd/src/glusterd-store.h index 19123f0051b..63d510cbf17 100644 --- a/xlators/mgmt/glusterd/src/glusterd-store.h +++ b/xlators/mgmt/glusterd/src/glusterd-store.h @@ -48,7 +48,7 @@ typedef enum glusterd_store_ver_ac_{ #define GLUSTERD_STORE_KEY_VOL_VERSION "version" #define GLUSTERD_STORE_KEY_VOL_TRANSPORT "transport-type" #define GLUSTERD_STORE_KEY_VOL_ID "volume-id" -#define GLUSTERD_STORE_KEY_VOL_IS_RESTORED "is-volume-restored" +#define GLUSTERD_STORE_KEY_VOL_RESTORED_SNAP "restored_from_snap" #define GLUSTERD_STORE_KEY_RB_STATUS "rb_status" #define GLUSTERD_STORE_KEY_RB_SRC_BRICK "rb_src" #define GLUSTERD_STORE_KEY_RB_DST_BRICK "rb_dst" diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c index b4644432d7c..0dda3910363 100644 --- a/xlators/mgmt/glusterd/src/glusterd-utils.c +++ b/xlators/mgmt/glusterd/src/glusterd-utils.c @@ -2273,14 +2273,12 @@ glusterd_add_volume_to_dict (glusterd_volinfo_t *volinfo, if (ret) goto out; - snprintf (key, sizeof (key), "volume%d.is_volume_restored", count); - ret = dict_set_int32 (dict, key, volinfo->is_volume_restored); - if (ret) { - gf_log (THIS->name, GF_LOG_ERROR, "Failed to set " - "is_volume_restored option for %s volume", - volinfo->volname); + snprintf (key, sizeof (key), "volume%d.restored_from_snap", count); + ret = dict_set_dynstr_with_alloc + (dict, key, + uuid_utoa (volinfo->restored_from_snap)); + if (ret) goto out; - } memset (key, 0, sizeof (key)); snprintf (key, sizeof (key), "volume%d.brick_count", count); @@ -3548,6 +3546,7 @@ glusterd_import_volinfo (dict_t *vols, int count, char *volname = NULL; glusterd_volinfo_t *new_volinfo = NULL; char *volume_id_str = NULL; + char *restored_snap = NULL; char msg[2048] = {0}; char *src_brick = NULL; char *dst_brick = NULL; @@ -3713,15 +3712,16 @@ glusterd_import_volinfo (dict_t *vols, int count, new_volinfo->is_snap_volume = is_snap_volume; - snprintf (key, sizeof (key), "volume%d.is_volume_restored", count); - ret = dict_get_uint32 (vols, key, &new_volinfo->is_volume_restored); + snprintf (key, sizeof (key), "volume%d.restored_from_snap", count); + ret = dict_get_str (vols, key, &restored_snap); if (ret) { - gf_log (THIS->name, GF_LOG_ERROR, "Failed to get " - "is_volume_restored option for %s", - volname); + snprintf (msg, sizeof (msg), "%s missing in payload for %s", + key, volname); goto out; } + uuid_parse (restored_snap, new_volinfo->restored_from_snap); + snprintf (key, sizeof (key), "volume%d.snap-max-hard-limit", count); ret = dict_get_uint64 (vols, key, &new_volinfo->snap_max_hard_limit); if (ret) { @@ -3965,9 +3965,34 @@ int32_t glusterd_delete_stale_volume (glusterd_volinfo_t *stale_volinfo, glusterd_volinfo_t *valid_volinfo) { + int32_t ret = -1; + glusterd_volinfo_t *temp_volinfo = NULL; + glusterd_volinfo_t *voliter = NULL; + xlator_t *this = NULL; + GF_ASSERT (stale_volinfo); GF_ASSERT (valid_volinfo); + /* Copy snap_volumes list from stale_volinfo to valid_volinfo */ + valid_volinfo->snap_count = 0; + list_for_each_entry_safe (voliter, temp_volinfo, + &stale_volinfo->snap_volumes, snapvol_list) { + list_add_tail (&voliter->snapvol_list, + &valid_volinfo->snap_volumes); + valid_volinfo->snap_count++; + } + + if ((!uuid_is_null (stale_volinfo->restored_from_snap)) && + (uuid_compare (stale_volinfo->restored_from_snap, + valid_volinfo->restored_from_snap))) { + ret = glusterd_lvm_snapshot_remove (NULL, stale_volinfo); + if (ret) { + gf_log(this->name, GF_LOG_WARNING, + "Failed to remove lvm snapshot for " + "restored volume %s", stale_volinfo->volname); + } + } + /* If stale volume is in started state, copy the port numbers of the * local bricks if they exist in the valid volume information. * stop stale bricks. Stale volume information is going to be deleted. @@ -4220,6 +4245,164 @@ out: return ret; } +int32_t +glusterd_perform_missed_op (glusterd_snap_t *snap, int32_t op) +{ + dict_t *dict = NULL; + int32_t ret = -1; + glusterd_conf_t *priv = NULL; + glusterd_volinfo_t *snap_volinfo = NULL; + glusterd_volinfo_t *volinfo = NULL; + xlator_t *this = NULL; + uuid_t null_uuid = {0}; + + this = THIS; + GF_ASSERT (this); + + priv = this->private; + GF_ASSERT (priv); + GF_ASSERT (snap); + + dict = dict_new(); + if (!dict) { + gf_log (this->name, GF_LOG_ERROR, "Unable to create dict"); + ret = -1; + goto out; + } + + switch (op) { + case GF_SNAP_OPTION_TYPE_DELETE: + ret = glusterd_snap_remove (dict, snap, _gf_true, _gf_false); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to remove snap"); + goto out; + } + + break; + case GF_SNAP_OPTION_TYPE_RESTORE: + /* TODO : As of now there is only volume in snapshot. + * Change this when multiple volume snapshot is introduced + */ + snap_volinfo = list_entry (snap->volumes.next, + glusterd_volinfo_t, vol_list); + + /* Find the parent volinfo */ + ret = glusterd_volinfo_find (snap_volinfo->parent_volname, + &volinfo); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Could not get volinfo of %s", + snap_volinfo->parent_volname); + goto out; + } + + /* Bump down the original volinfo's version, coz it would have + * incremented already due to volume handshake + */ + volinfo->version--; + uuid_copy (volinfo->restored_from_snap, null_uuid); + + /* Perform the restore */ + ret = gd_restore_snap_volume (dict, volinfo, snap_volinfo); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to restore " + "snap for %s", snap->snapname); + volinfo->version++; + goto out; + } + + break; + default: + /* The entry must be a create, delete, or + * restore entry + */ + gf_log (this->name, GF_LOG_ERROR, "Invalid missed snap entry"); + ret = -1; + goto out; + } + +out: + dict_unref (dict); + gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret); + return ret; +} + +/* Perform missed deletes and restores on this node */ +int32_t +glusterd_perform_missed_snap_ops () +{ + int32_t ret = -1; + int32_t op_status = -1; + glusterd_conf_t *priv = NULL; + glusterd_missed_snap_info *missed_snapinfo = NULL; + glusterd_snap_op_t *snap_opinfo = NULL; + glusterd_snap_t *snap = NULL; + uuid_t snap_uuid = {0,}; + xlator_t *this = NULL; + + this = THIS; + GF_ASSERT (this); + + priv = this->private; + GF_ASSERT (priv); + + list_for_each_entry (missed_snapinfo, &priv->missed_snaps_list, + missed_snaps) { + /* If the pending snap_op is not for this node then continue */ + if (strcmp (missed_snapinfo->node_uuid, uuid_utoa (MY_UUID))) + continue; + + /* Find the snap id */ + uuid_parse (missed_snapinfo->snap_uuid, snap_uuid); + snap = NULL; + snap = glusterd_find_snap_by_id (snap_uuid); + if (!snap) { + /* If the snap is not found, then a delete or a + * restore can't be pending on that snap_uuid. + */ + gf_log (this->name, GF_LOG_DEBUG, + "Not a pending delete or restore op"); + continue; + } + + op_status = GD_MISSED_SNAP_PENDING; + list_for_each_entry (snap_opinfo, &missed_snapinfo->snap_ops, + snap_ops_list) { + /* If the snap_op is create or its status is + * GD_MISSED_SNAP_DONE then continue + */ + if ((snap_opinfo->status == GD_MISSED_SNAP_DONE) || + (snap_opinfo->op == GF_SNAP_OPTION_TYPE_CREATE)) + continue; + + /* Perform the actual op for the first time for + * this snap, and mark the snap_status as + * GD_MISSED_SNAP_DONE. For other entries for the same + * snap, just mark the entry as done. + */ + if (op_status == GD_MISSED_SNAP_PENDING) { + ret = glusterd_perform_missed_op + (snap, + snap_opinfo->op); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to perform missed snap op"); + goto out; + } + op_status = GD_MISSED_SNAP_DONE; + } + + snap_opinfo->status = GD_MISSED_SNAP_DONE; + } + } + + ret = 0; +out: + gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret); + return ret; +} + /* Import friend volumes missed_snap_list and update * * missed_snap_list if need be */ int32_t @@ -4253,6 +4436,16 @@ glusterd_import_friend_missed_snap_list (dict_t *vols) goto out; } + ret = glusterd_perform_missed_snap_ops (); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to perform snap operations"); + /* Not going to out at this point coz some * + * missed ops might have been performed. We * + * need to persist the current list * + */ + } + ret = glusterd_store_update_missed_snaps (); if (ret) { gf_log (this->name, GF_LOG_ERROR, diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.h b/xlators/mgmt/glusterd/src/glusterd-utils.h index ec65357f9a3..1a4490ab988 100644 --- a/xlators/mgmt/glusterd/src/glusterd-utils.h +++ b/xlators/mgmt/glusterd/src/glusterd-utils.h @@ -726,4 +726,9 @@ glusterd_add_missed_snaps_to_export_dict (dict_t *vols); int32_t glusterd_import_friend_missed_snap_list (dict_t *vols); +int32_t +gd_restore_snap_volume (dict_t *rsp_dict, + glusterd_volinfo_t *orig_vol, + glusterd_volinfo_t *snap_vol); + #endif diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.c b/xlators/mgmt/glusterd/src/glusterd-volgen.c index 797370a87c1..ae095bf7c63 100644 --- a/xlators/mgmt/glusterd/src/glusterd-volgen.c +++ b/xlators/mgmt/glusterd/src/glusterd-volgen.c @@ -4266,128 +4266,3 @@ gd_is_boolean_option (char *key) return _gf_false; } - -/* This function will restore origin volume to it's snap. - * The restore operation will simply replace the Gluster origin - * volume with the snap volume. - * TODO: Multi-volume delete to be done. - * Cleanup in case of restore failure is pending. - * - * @param orig_vol volinfo of origin volume - * @param snap_vol volinfo of snapshot volume - * - * @return 0 on success and negative value on error - */ -int -gd_restore_snap_volume (dict_t *rsp_dict, - glusterd_volinfo_t *orig_vol, - glusterd_volinfo_t *snap_vol) -{ - int ret = -1; - glusterd_volinfo_t *new_volinfo = NULL; - glusterd_snap_t *snap = NULL; - xlator_t *this = NULL; - glusterd_conf_t *conf = NULL; - glusterd_volinfo_t *temp_volinfo = NULL; - glusterd_volinfo_t *voliter = NULL; - - this = THIS; - GF_ASSERT (this); - GF_ASSERT (rsp_dict); - conf = this->private; - GF_ASSERT (conf); - - GF_VALIDATE_OR_GOTO (this->name, orig_vol, out); - GF_VALIDATE_OR_GOTO (this->name, snap_vol, out); - snap = snap_vol->snapshot; - GF_VALIDATE_OR_GOTO (this->name, snap, out); - - /* Snap volume must be stoped before performing the - * restore operation. - */ - ret = glusterd_stop_volume (snap_vol); - if (ret) { - gf_log (this->name, GF_LOG_ERROR, "Failed to stop " - "snap volume(%s)", snap_vol->volname); - goto out; - } - - /* Create a new volinfo for the restored volume */ - ret = glusterd_volinfo_dup (snap_vol, &new_volinfo, _gf_true); - if (ret) { - gf_log (this->name, GF_LOG_ERROR, "Failed to create volinfo"); - goto out; - } - - /* Following entries need to be derived from origin volume. */ - strcpy (new_volinfo->volname, orig_vol->volname); - uuid_copy (new_volinfo->volume_id, orig_vol->volume_id); - new_volinfo->snap_count = orig_vol->snap_count; - new_volinfo->snap_max_hard_limit = orig_vol->snap_max_hard_limit; - new_volinfo->is_volume_restored = _gf_true; - - /* Bump the version of the restored volume, so that nodes * - * which are done can sync during handshake */ - new_volinfo->version = orig_vol->version; - - list_for_each_entry_safe (voliter, temp_volinfo, - &orig_vol->snap_volumes, snapvol_list) { - list_add_tail (&voliter->snapvol_list, - &new_volinfo->snap_volumes); - } - /* Copy the snap vol info to the new_volinfo.*/ - ret = glusterd_snap_volinfo_restore (rsp_dict, new_volinfo, snap_vol); - if (ret) { - gf_log (this->name, GF_LOG_ERROR, "Failed to restore snap"); - (void)glusterd_volinfo_delete (new_volinfo); - goto out; - } - - /* If the orig_vol is already restored then we should delete - * the backend LVMs */ - if (orig_vol->is_volume_restored) { - ret = glusterd_lvm_snapshot_remove (rsp_dict, orig_vol); - if (ret) { - gf_log (this->name, GF_LOG_ERROR, "Failed to remove " - "LVM backend"); - (void)glusterd_volinfo_delete (new_volinfo); - goto out; - } - } - - /* Once the new_volinfo is completely constructed then delete - * the orinal volinfo - */ - ret = glusterd_volinfo_delete (orig_vol); - if (ret) { - gf_log (this->name, GF_LOG_ERROR, "Failed to delete volinfo"); - (void)glusterd_volinfo_delete (new_volinfo); - goto out; - } - /* New volinfo always shows the status as created. Therefore - * set the status to stop. */ - glusterd_set_volume_status (new_volinfo, GLUSTERD_STATUS_STOPPED); - - list_add_tail (&new_volinfo->vol_list, &conf->volumes); - - /* Now delete the snap entry. As a first step delete the snap - * volume information stored in store. */ - ret = glusterd_snap_remove (rsp_dict, snap, _gf_false, _gf_true); - if (ret) { - gf_log (this->name, GF_LOG_WARNING, "Failed to delete " - "snap %s", snap->snapname); - goto out; - } - - ret = glusterd_store_volinfo (new_volinfo, - GLUSTERD_VOLINFO_VER_AC_INCREMENT); - if (ret) { - gf_log (this->name, GF_LOG_ERROR, "Failed to store volinfo"); - goto out; - } - - ret = 0; -out: - - return ret; -} diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.h b/xlators/mgmt/glusterd/src/glusterd-volgen.h index 1f9416106c4..ef92087fc74 100644 --- a/xlators/mgmt/glusterd/src/glusterd-volgen.h +++ b/xlators/mgmt/glusterd/src/glusterd-volgen.h @@ -172,7 +172,4 @@ gd_is_xlator_option (char *key); gf_boolean_t gd_is_boolean_option (char *key); -int gd_restore_snap_volume (dict_t *rsp_dict, - glusterd_volinfo_t *orig_vol, - glusterd_volinfo_t *snap_vol); #endif diff --git a/xlators/mgmt/glusterd/src/glusterd.h b/xlators/mgmt/glusterd/src/glusterd.h index d50fa03d23c..b53d8e41232 100644 --- a/xlators/mgmt/glusterd/src/glusterd.h +++ b/xlators/mgmt/glusterd/src/glusterd.h @@ -298,7 +298,7 @@ struct glusterd_volinfo_ { char volname[GLUSTERD_MAX_VOLUME_NAME]; gf_boolean_t is_snap_volume; glusterd_snap_t *snapshot; - gf_boolean_t is_volume_restored; + uuid_t restored_from_snap; char parent_volname[GLUSTERD_MAX_VOLUME_NAME]; /* In case of a snap volume i.e (is_snap_volume == TRUE) this |