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authorshishir gowda <sgowda@redhat.com>2013-09-24 16:44:24 +0530
committershishir gowda <sgowda@redhat.com>2013-10-10 13:27:05 +0530
commite0fde5103f6daf90e95c23205a453108be82d20d (patch)
tree5a169f4af89d27b3f65790df894888d6750cb751
parent9c447bc5e924e840e18efdbc1023470bf2b38228 (diff)
mgmt/glusterd: Introduce snapshot infrastructure
API's for creating, adding, finding, removing snapshots and consistency groups are provided. Signed-off-by: shishir gowda <sgowda@redhat.com>
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-utils.c301
-rw-r--r--xlators/mgmt/glusterd/src/glusterd.h2
2 files changed, 301 insertions, 2 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c
index b0cba4d..50ba62e 100644
--- a/xlators/mgmt/glusterd/src/glusterd-utils.c
+++ b/xlators/mgmt/glusterd/src/glusterd-utils.c
@@ -7754,3 +7754,304 @@ out:
gf_log ("", GF_LOG_DEBUG, "Returning %d", ret);
return ret;
}
+
+glusterd_snap_t*
+glusterd_new_snap_object()
+{
+ glusterd_snap_t *snap = NULL;
+
+ snap = GF_CALLOC (1, sizeof (*snap), gf_gld_mt_snap_t);
+
+ if (snap) {
+ LOCK_INIT (&snap->lock);
+ INIT_LIST_HEAD (&snap->snap_list);
+ snap->snap_status = GD_SNAP_STATUS_INIT;
+ }
+
+ return snap;
+
+};
+
+glusterd_snap_cg_t*
+glusterd_new_snap_cg_object(int64_t volume_count)
+{
+ glusterd_snap_cg_t *cg = NULL;
+ glusterd_volinfo_t *volinfo = NULL;
+
+ if (volume_count < 0) {
+ gf_log (THIS->name, GF_LOG_ERROR, "Volume count < 0");
+ return NULL;
+ }
+
+ cg = GF_CALLOC (1, (sizeof (*cg) +
+ (volume_count * sizeof (*volinfo))),
+ gf_gld_mt_snap_cg_t);
+
+ if (cg) {
+ LOCK_INIT (&cg->lock);
+ INIT_LIST_HEAD (&cg->cg_list);
+ cg->cg_status = GD_SNAP_STATUS_INIT;
+ cg->volume_count = volume_count;
+ }
+
+ return cg;
+}
+
+int32_t
+glusterd_add_snap (glusterd_volinfo_t *volinfo, glusterd_snap_t *snap)
+{
+ int ret = -1;
+ uint64_t count = -1;
+ glusterd_snap_t *entry = NULL;
+ glusterd_snap_t *last = NULL;
+ glusterd_snap_t *tmp = NULL;
+
+ GF_VALIDATE_OR_GOTO ("glusterd", volinfo, out);
+ GF_VALIDATE_OR_GOTO ("glusterd", snap, out);
+
+ LOCK (&volinfo->lock);
+ {
+ list_for_each_entry_safe (entry, tmp, &volinfo->snaps,
+ snap_list) {
+ count++;
+ if (!strcmp (entry->snap_name, snap->snap_name) ||
+ !uuid_compare (entry->snap_id, snap->snap_id)) {
+ gf_log (THIS->name, GF_LOG_ERROR, "Found "
+ "duplicate snap %s (%s)",
+ entry->snap_name,
+ uuid_utoa (entry->snap_id));
+ goto unlock;
+ }
+ last = entry;
+ }
+ list_add (&snap->snap_list, &last->snap_list);
+
+ gf_log (THIS->name, GF_LOG_DEBUG, "Snap %s added @ %"PRIu64,
+ snap->snap_name, count);
+ ret = 0;
+ }
+unlock:
+ UNLOCK (&volinfo->lock);
+out:
+ return ret;
+}
+
+glusterd_snap_t*
+glusterd_find_snap_by_name (glusterd_volinfo_t *volinfo, char *snap_name)
+{
+ uint64_t count = -1;
+ glusterd_snap_t *entry = NULL;
+ glusterd_snap_t *dup = NULL;
+ glusterd_snap_t *tmp = NULL;
+
+ GF_VALIDATE_OR_GOTO ("glusterd", volinfo, out);
+ GF_VALIDATE_OR_GOTO ("glusterd", snap_name, out);
+
+ LOCK (&volinfo->lock);
+ {
+ list_for_each_entry_safe (entry, tmp, &volinfo->snaps,
+ snap_list) {
+ count++;
+ if (!strcmp (entry->snap_name, snap_name)) {
+ gf_log (THIS->name, GF_LOG_DEBUG, "Found "
+ "snap %s (%s)", entry->snap_name,
+ uuid_utoa (entry->snap_id));
+ dup = entry;
+ break;
+ }
+ }
+ }
+ UNLOCK (&volinfo->lock);
+out:
+ return dup;
+}
+
+glusterd_snap_t*
+glusterd_find_snap_by_id (glusterd_volinfo_t *volinfo, uuid_t snap_id)
+{
+ uint64_t count = -1;
+ glusterd_snap_t *entry = NULL;
+ glusterd_snap_t *dup = NULL;
+ glusterd_snap_t *tmp = NULL;
+
+ GF_VALIDATE_OR_GOTO ("glusterd", volinfo, out);
+ if (uuid_is_null(snap_id))
+ goto out;
+
+ LOCK (&volinfo->lock);
+ {
+ list_for_each_entry_safe (entry, tmp, &volinfo->snaps,
+ snap_list) {
+ count++;
+ if (!uuid_compare (entry->snap_id, snap_id)) {
+ gf_log (THIS->name, GF_LOG_DEBUG, "Found "
+ "snap %s (%s)", entry->snap_name,
+ uuid_utoa (entry->snap_id));
+ dup = entry;
+ break;
+ }
+ }
+ }
+ UNLOCK (&volinfo->lock);
+out:
+ return dup;
+}
+
+glusterd_snap_t*
+glusterd_remove_snap_by_id (glusterd_volinfo_t *volinfo, uuid_t snap_id)
+{
+ glusterd_snap_t *entry = NULL;
+
+ GF_VALIDATE_OR_GOTO ("glusterd", volinfo, out);
+ if (uuid_is_null(snap_id))
+ goto out;
+
+ entry = glusterd_find_snap_by_id (volinfo, snap_id);
+
+ if (entry) {
+ LOCK (&volinfo->lock);
+ {
+ entry->snap_status = GD_SNAP_STATUS_DECOMMISSION;
+ list_del_init (&entry->snap_list);
+ }
+ UNLOCK (&volinfo->lock);
+ }
+out:
+ return entry;
+}
+
+glusterd_snap_t*
+glusterd_remove_snap_by_name (glusterd_volinfo_t *volinfo, char *snap_name)
+{
+ glusterd_snap_t *entry = NULL;
+
+ GF_VALIDATE_OR_GOTO ("glusterd", volinfo, out);
+ GF_VALIDATE_OR_GOTO ("glusterd", snap_name, out);
+
+ entry = glusterd_find_snap_by_name (volinfo, snap_name);
+
+ if (entry) {
+ LOCK (&volinfo->lock);
+ {
+ entry->snap_status = GD_SNAP_STATUS_DECOMMISSION;
+ list_del_init (&entry->snap_list);
+ }
+ UNLOCK (&volinfo->lock);
+ }
+out:
+ return entry;
+}
+
+// Big lock should already acquired before this is called
+int32_t
+glusterd_add_snap_cg (glusterd_conf_t *conf, glusterd_snap_cg_t *cg)
+{
+ int ret = -1;
+ uint64_t count = -1;
+ glusterd_snap_cg_t *entry = NULL;
+ glusterd_snap_cg_t *last = NULL;
+ glusterd_snap_cg_t *tmp = NULL;
+
+ GF_VALIDATE_OR_GOTO (THIS->name, conf, out);
+ GF_VALIDATE_OR_GOTO (THIS->name, cg, out);
+
+ list_for_each_entry_safe (entry, tmp, &conf->snap_cg, cg_list) {
+ count++;
+ if (!strcmp (entry->cg_name, cg->cg_name) ||
+ !uuid_compare (entry->cg_id, cg->cg_id)) {
+ gf_log (THIS->name, GF_LOG_ERROR, "Found duplicate "
+ "CG %s(%s)", entry->cg_name,
+ uuid_utoa(entry->cg_id));
+ goto out;
+ }
+ last = entry;
+ }
+ list_add (&cg->cg_list, &last->cg_list);
+ gf_log (THIS->name, GF_LOG_DEBUG, "Added CG %s (%s) @ %"PRIu64,
+ cg->cg_name, uuid_utoa(cg->cg_id), count);
+ ret = 0;
+out:
+ return ret;
+
+}
+
+
+glusterd_snap_cg_t*
+glusterd_find_snap_cg_by_name (glusterd_conf_t *conf, char *cg_name)
+{
+ glusterd_snap_cg_t *entry = NULL;
+ glusterd_snap_cg_t *dup = NULL;
+ glusterd_snap_cg_t *tmp = NULL;
+
+ GF_VALIDATE_OR_GOTO (THIS->name, conf, out);
+ GF_VALIDATE_OR_GOTO (THIS->name, cg_name, out);
+
+ list_for_each_entry_safe (entry, tmp, &conf->snap_cg, cg_list) {
+ if (!strcmp (entry->cg_name, cg_name)) {
+ gf_log (THIS->name, GF_LOG_DEBUG, "Found CG %s(%s)",
+ entry->cg_name, uuid_utoa(entry->cg_id));
+ dup = entry;
+ break;
+ }
+ }
+out:
+ return dup;
+}
+
+glusterd_snap_cg_t*
+glusterd_find_snap_cg_by_id (glusterd_conf_t *conf, uuid_t cg_id)
+{
+ glusterd_snap_cg_t *entry = NULL;
+ glusterd_snap_cg_t *dup = NULL;
+ glusterd_snap_cg_t *tmp = NULL;
+
+ GF_VALIDATE_OR_GOTO (THIS->name, conf, out);
+ if (uuid_is_null (cg_id))
+ goto out;
+
+ list_for_each_entry_safe (entry, tmp, &conf->snap_cg, cg_list) {
+ if (!uuid_compare (entry->cg_id, cg_id)) {
+ gf_log (THIS->name, GF_LOG_DEBUG, "Found CG %s(%s)",
+ entry->cg_name, uuid_utoa(entry->cg_id));
+ dup = entry;
+ break;
+ }
+ }
+out:
+ return dup;
+}
+
+glusterd_snap_cg_t*
+glusterd_remove_snap_cg_by_name (glusterd_conf_t *conf, char *cg_name)
+{
+ glusterd_snap_cg_t *entry = NULL;
+
+ GF_VALIDATE_OR_GOTO (THIS->name, conf, out);
+ GF_VALIDATE_OR_GOTO (THIS->name, cg_name, out);
+
+ entry = glusterd_find_snap_cg_by_name(conf, cg_name);
+ if (entry) {
+ entry->cg_status = GD_SNAP_STATUS_DECOMMISSION;
+ list_del_init (&entry->cg_list);
+ }
+out:
+ return entry;
+}
+
+glusterd_snap_cg_t*
+glusterd_remove_snap_cg_by_id (glusterd_conf_t *conf, uuid_t cg_id)
+{
+ glusterd_snap_cg_t *entry = NULL;
+
+ GF_VALIDATE_OR_GOTO (THIS->name, conf, out);
+ if (uuid_is_null (cg_id))
+ goto out;
+
+ entry = glusterd_find_snap_cg_by_id (conf, cg_id);
+ if (entry) {
+ entry->cg_status = GD_SNAP_STATUS_DECOMMISSION;
+ list_del_init (&entry->cg_list);
+ }
+out:
+ return entry;
+}
diff --git a/xlators/mgmt/glusterd/src/glusterd.h b/xlators/mgmt/glusterd/src/glusterd.h
index 4111a1d..70ac31c 100644
--- a/xlators/mgmt/glusterd/src/glusterd.h
+++ b/xlators/mgmt/glusterd/src/glusterd.h
@@ -849,6 +849,4 @@ glusterd_remove_snap_cg_by_id (glusterd_conf_t *conf, uuid_t cg_id);
glusterd_snap_cg_t*
glusterd_find_snap_cg_by_id (glusterd_conf_t *conf, uuid_t cg_id);
-glusterd_snap_cg_t*
-glusterd_find_snap_cg_by_name (glusterd_conf_t *conf, char *cg_name);
#endif