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Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-store.c')
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-store.c288
1 files changed, 281 insertions, 7 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-store.c b/xlators/mgmt/glusterd/src/glusterd-store.c
index 256519598..2340c4030 100644
--- a/xlators/mgmt/glusterd/src/glusterd-store.c
+++ b/xlators/mgmt/glusterd/src/glusterd-store.c
@@ -802,6 +802,21 @@ glusterd_store_node_state_path_set (glusterd_volinfo_t *volinfo,
}
static void
+glusterd_store_missed_snaps_list_path_set (char *missed_snaps_list,
+ size_t len)
+{
+ glusterd_conf_t *priv = NULL;
+
+ priv = THIS->private;
+ GF_ASSERT (priv);
+ GF_ASSERT (missed_snaps_list);
+ GF_ASSERT (len <= PATH_MAX);
+
+ snprintf (missed_snaps_list, len, "%s/snaps/"
+ GLUSTERD_MISSED_SNAPS_LIST_FILE, priv->workdir);
+}
+
+static void
glusterd_store_snapfpath_set (glusterd_snap_t *snap, char *snap_fpath,
size_t len)
{
@@ -861,6 +876,29 @@ glusterd_store_create_nodestate_sh_on_absence (glusterd_volinfo_t *volinfo)
return ret;
}
+static int32_t
+glusterd_store_create_missed_snaps_list_shandle_on_absence ()
+{
+ char missed_snaps_list[PATH_MAX] = "";
+ int32_t ret = -1;
+ glusterd_conf_t *priv = NULL;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+
+ priv = this->private;
+ GF_ASSERT (priv);
+
+ glusterd_store_missed_snaps_list_path_set (missed_snaps_list,
+ sizeof(missed_snaps_list));
+
+ ret = gf_store_handle_create_on_absence
+ (&priv->missed_snaps_list_shandle,
+ missed_snaps_list);
+ return ret;
+}
+
int32_t
glusterd_store_create_snap_shandle_on_absence (glusterd_snap_t *snap)
{
@@ -2748,6 +2786,7 @@ int32_t
glusterd_store_retrieve_snap (char *snapname)
{
int32_t ret = -1;
+ dict_t *dict = NULL;
glusterd_snap_t *snap = NULL;
glusterd_conf_t *priv = NULL;
xlator_t *this = NULL;
@@ -2757,6 +2796,14 @@ glusterd_store_retrieve_snap (char *snapname)
GF_ASSERT (priv);
GF_ASSERT (snapname);
+ dict = dict_new();
+ if (!dict) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to create dict");
+ ret = -1;
+ goto out;
+ }
+
snap = glusterd_new_snap_object ();
if (!snap) {
gf_log (this->name, GF_LOG_ERROR, "Failed to create "
@@ -2800,7 +2847,7 @@ glusterd_store_retrieve_snap (char *snapname)
as a failed snapshot and clean it up.
*/
if (snap->snap_status != GD_SNAP_STATUS_IN_USE) {
- ret = glusterd_snap_remove (snap, _gf_true, _gf_true);
+ ret = glusterd_snap_remove (dict, snap, _gf_true, _gf_true);
if (ret)
gf_log (this->name, GF_LOG_WARNING, "failed to remove"
" the snapshot %s", snap->snapname);
@@ -2814,8 +2861,104 @@ glusterd_store_retrieve_snap (char *snapname)
glusterd_compare_snap_time);
out:
- gf_log ("", GF_LOG_TRACE, "Returning with %d", ret);
+ if (dict)
+ dict_unref (dict);
+
+ gf_log (this->name, GF_LOG_TRACE, "Returning with %d", ret);
+ return ret;
+}
+
+/* Read the missed_snap_list and update the in-memory structs */
+int32_t
+glusterd_store_retrieve_missed_snaps_list (xlator_t *this)
+{
+ char buf[PATH_MAX] = "";
+ char path[PATH_MAX] = "";
+ char *missed_node_info = NULL;
+ char *brick_path = NULL;
+ char *value = NULL;
+ char *save_ptr = NULL;
+ FILE *fp = NULL;
+ int32_t brick_num = -1;
+ int32_t snap_op = -1;
+ int32_t snap_status = -1;
+ int32_t ret = -1;
+ glusterd_conf_t *priv = NULL;
+ gf_store_op_errno_t store_errno = GD_STORE_SUCCESS;
+
+ GF_ASSERT (this);
+ priv = this->private;
+ GF_ASSERT (priv);
+
+ /* Get the path of the missed_snap_list */
+ glusterd_store_missed_snaps_list_path_set (path, sizeof(path));
+
+ fp = fopen (path, "r");
+ if (!fp) {
+ /* If errno is ENOENT then there are no missed snaps yet */
+ if (errno != ENOENT) {
+ ret = -1;
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to open %s. "
+ "Error: %s", path, strerror(errno));
+ } else {
+ gf_log (this->name, GF_LOG_INFO,
+ "No missed snaps list.");
+ ret = 0;
+ }
+ goto out;
+ }
+
+ do {
+ ret = gf_store_read_and_tokenize (fp, buf,
+ &missed_node_info, &value,
+ &store_errno);
+ if (ret) {
+ if (store_errno == GD_STORE_EOF) {
+ gf_log (this->name,
+ GF_LOG_DEBUG,
+ "EOF for missed_snap_list");
+ ret = 0;
+ break;
+ }
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to fetch data from "
+ "missed_snaps_list. Error: %s",
+ gf_store_strerror (store_errno));
+ goto out;
+ }
+
+ /* Fetch the brick_num, brick_path, snap_op and snap status */
+ brick_num = atoi(strtok_r (value, ":", &save_ptr));
+ brick_path = strtok_r (NULL, ":", &save_ptr);
+ snap_op = atoi(strtok_r (NULL, ":", &save_ptr));
+ snap_status = atoi(strtok_r (NULL, ":", &save_ptr));
+ if (!missed_node_info || !brick_path ||
+ brick_num < 1 || snap_op < 1 ||
+ snap_status < 1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Invalid missed_snap_entry");
+ ret = -1;
+ goto out;
+ }
+
+ ret = glusterd_store_missed_snaps_list (missed_node_info,
+ brick_num,
+ brick_path,
+ snap_op,
+ snap_status);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to store missed snaps_list");
+ goto out;
+ }
+
+ } while (store_errno == GD_STORE_SUCCESS);
+
+ ret = 0;
+out:
+ gf_log (this->name, GF_LOG_TRACE, "Returning with %d", ret);
return ret;
}
@@ -2850,16 +2993,27 @@ glusterd_store_retrieve_snaps (xlator_t *this)
glusterd_for_each_entry (entry, dir);
while (entry) {
- ret = glusterd_store_retrieve_snap (entry->d_name);
- if (ret) {
- gf_log ("", GF_LOG_ERROR, "Unable to restore "
- "snapshot: %s", entry->d_name);
- goto out;
+ if (entry->d_type == DT_DIR) {
+ ret = glusterd_store_retrieve_snap (entry->d_name);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Unable to restore snapshot: %s",
+ entry->d_name);
+ goto out;
+ }
}
glusterd_for_each_entry (entry, dir);
}
+ /* Retrieve missed_snaps_list */
+ ret = glusterd_store_retrieve_missed_snaps_list (this);
+ if (ret) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "Failed to retrieve missed_snaps_list");
+ goto out;
+ }
+
out:
if (dir)
closedir (dir);
@@ -2868,6 +3022,126 @@ out:
return ret;
}
+/* Writes all the contents of conf->missed_snap_list */
+int32_t
+glusterd_store_write_missed_snapinfo (int32_t fd)
+{
+ char value[PATH_MAX] = "";
+ int32_t ret = -1;
+ glusterd_conf_t *priv = NULL;
+ glusterd_missed_snap_info *missed_snapinfo = NULL;
+ glusterd_snap_op_t *snap_opinfo = NULL;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT(this);
+
+ priv = this->private;
+ GF_ASSERT (priv);
+
+ /* Write the missed_snap_entry */
+ list_for_each_entry (missed_snapinfo, &priv->missed_snaps_list,
+ missed_snaps) {
+ list_for_each_entry (snap_opinfo,
+ &missed_snapinfo->snap_ops,
+ snap_ops_list) {
+ snprintf (value, sizeof(value), "%d:%s:%d:%d",
+ snap_opinfo->brick_num,
+ snap_opinfo->brick_path,
+ snap_opinfo->op, snap_opinfo->status);
+ ret = gf_store_save_value
+ (fd,
+ missed_snapinfo->node_snap_info,
+ value);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to write missed snapinfo");
+ goto out;
+ }
+ }
+ }
+
+ ret = 0;
+out:
+ gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret);
+ return ret;
+}
+
+/* Adds the missed snap entries to the in-memory conf->missed_snap_list *
+ * and writes them to disk */
+int32_t
+glusterd_store_update_missed_snaps (dict_t *dict, int32_t missed_snap_count)
+{
+ int32_t fd = -1;
+ int32_t ret = -1;
+ glusterd_conf_t *priv = NULL;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT(this);
+ GF_ASSERT(dict);
+
+ priv = this->private;
+ GF_ASSERT (priv);
+
+ if (missed_snap_count < 1) {
+ gf_log (this->name, GF_LOG_DEBUG, "No missed snaps");
+ ret = 0;
+ goto out;
+ }
+
+ ret = glusterd_store_create_missed_snaps_list_shandle_on_absence ();
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Unable to obtain "
+ "missed_snaps_list store handle.");
+ goto out;
+ }
+
+ fd = gf_store_mkstemp (priv->missed_snaps_list_shandle);
+ if (fd <= 0) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to create tmp file");
+ ret = -1;
+ goto out;
+ }
+
+ ret = glusterd_add_missed_snaps_to_list (dict, missed_snap_count);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to add missed snaps to list");
+ goto out;
+ }
+
+ ret = glusterd_store_write_missed_snapinfo (fd);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to write missed snaps to disk");
+ goto out;
+ }
+
+ ret = gf_store_rename_tmppath (priv->missed_snaps_list_shandle);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to rename the tmp file");
+ goto out;
+ }
+out:
+ if (ret && (fd > 0)) {
+ ret = gf_store_unlink_tmppath (priv->missed_snaps_list_shandle);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to unlink the tmp file");
+ }
+ ret = -1;
+ }
+
+ if (fd > 0)
+ close (fd);
+
+ gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret);
+ return ret;
+}
+
int32_t
glusterd_store_delete_peerinfo (glusterd_peerinfo_t *peerinfo)
{