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-rw-r--r--xlators/mgmt/glusterd/src/glusterd-snapshot.c159
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-store.c32
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-store.h2
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-utils.c217
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-utils.h5
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-volgen.c125
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-volgen.h3
-rw-r--r--xlators/mgmt/glusterd/src/glusterd.h2
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 b99f2ac..c1967a2 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 9c04aab..1e39fb2 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 19123f0..63d510c 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 b464443..0dda391 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 ec65357..1a4490a 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 797370a..ae095bf 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 1f94161..ef92087 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 d50fa03..b53d8e4 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