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authorVijay Bellur <vijay@gluster.com>2010-08-23 03:51:21 +0000
committerAnand V. Avati <avati@dev.gluster.com>2010-08-23 02:53:16 -0700
commitdf4a7d75765b042ddbda4cbcd419743a37767ec3 (patch)
tree4a04c3720ad869869deb3d7d42c63252b2d7772a /xlators/mgmt/glusterd/src/glusterd-utils.c
parent39dc05e370286a62428a94e3e7666e2eedaea941 (diff)
glusterd: support for volume version and cksumv3.1.0qa8
Signed-off-by: Vijay Bellur <vijay@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 1310 () URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1310
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-utils.c')
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-utils.c488
1 files changed, 488 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c
index 35dfa3d..f0115c0 100644
--- a/xlators/mgmt/glusterd/src/glusterd-utils.c
+++ b/xlators/mgmt/glusterd/src/glusterd-utils.c
@@ -927,3 +927,491 @@ glusterd_is_cli_op_req (int32_t op)
return _gf_false;
}
+
+
+int
+glusterd_volume_compute_cksum (glusterd_volinfo_t *volinfo)
+{
+ int32_t ret = -1;
+ glusterd_conf_t *priv = NULL;
+ char path[PATH_MAX] = {0,};
+ char cksum_path[PATH_MAX] = {0,};
+ char filepath[PATH_MAX] = {0,};
+ DIR *dir = NULL;
+ struct dirent *entry = NULL;
+ int fd = -1;
+ uint32_t cksum = 0;
+ char buf[4096] = {0,};
+
+ GF_ASSERT (volinfo);
+
+ priv = THIS->private;
+ GF_ASSERT (priv);
+
+ GLUSTERD_GET_VOLUME_DIR (path, volinfo, priv);
+
+ snprintf (cksum_path, sizeof (cksum_path), "%s/%s",
+ path, GLUSTERD_CKSUM_FILE);
+
+ fd = open (cksum_path, O_RDWR | O_APPEND | O_CREAT, 0644);
+
+ if (-1 == fd) {
+ gf_log ("", GF_LOG_ERROR, "Unable to open %s, errno: %d",
+ cksum_path, errno);
+ ret = -1;
+ goto out;
+ }
+
+
+ dir = opendir (path);
+
+ glusterd_for_each_entry (entry, dir);
+
+/* while (entry) {
+
+ snprintf (filepath, sizeof (filepath), "%s/%s", path,
+ entry->d_name);
+
+ if (!strcmp (entry->d_name, "bricks") ||
+ !strcmp (entry->d_name, "run")) {
+ glusterd_for_each_entry (entry, dir);
+ continue;
+ }
+
+ ret = get_checksum_for_path (filepath, &cksum);
+
+ if (ret) {
+ gf_log ("", GF_LOG_ERROR, "Unable to get checksum"
+ " for path: %s", filepath);
+ goto out;
+ }
+
+ snprintf (buf, sizeof (buf), "%s=%u\n", entry->d_name, cksum);
+ ret = write (fd, buf, strlen (buf));
+
+ if (ret <= 0) {
+ ret = -1;
+ goto out;
+ }
+
+ glusterd_for_each_entry (entry, dir);
+ }
+*/
+
+ snprintf (filepath, sizeof (filepath), "%s/%s", path,
+ GLUSTERD_VOLUME_INFO_FILE);
+
+ ret = get_checksum_for_path (filepath, &cksum);
+
+ if (ret) {
+ gf_log ("", GF_LOG_ERROR, "Unable to get checksum"
+ " for path: %s", filepath);
+ goto out;
+ }
+
+ snprintf (buf, sizeof (buf), "%s=%u\n", "info", cksum);
+ ret = write (fd, buf, strlen (buf));
+
+ if (ret <= 0) {
+ ret = -1;
+ goto out;
+ }
+
+ ret = get_checksum_for_file (fd, &cksum);
+
+ if (ret)
+ goto out;
+
+ volinfo->cksum = cksum;
+
+out:
+ if (fd > 0)
+ close (fd);
+
+ if (dir)
+ closedir (dir);
+
+ gf_log ("", GF_LOG_DEBUG, "Returning with %d", ret);
+
+ return ret;
+}
+
+int32_t
+glusterd_add_volume_to_dict (glusterd_volinfo_t *volinfo,
+ dict_t *dict, int32_t count)
+{
+ int32_t ret = -1;
+ char key[512] = {0,};
+ glusterd_brickinfo_t *brickinfo = NULL;
+ int32_t i = 1;
+
+ GF_ASSERT (dict);
+ GF_ASSERT (volinfo);
+
+ snprintf (key, sizeof (key), "volume%d.name", count);
+ ret = dict_set_str (dict, key, volinfo->volname);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.type", count);
+ ret = dict_set_int32 (dict, key, volinfo->type);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.brick_count", count);
+ ret = dict_set_int32 (dict, key, volinfo->brick_count);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.version", count);
+ ret = dict_set_int32 (dict, key, volinfo->version);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.status", count);
+ ret = dict_set_int32 (dict, key, volinfo->status);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.sub_count", count);
+ ret = dict_set_int32 (dict, key, volinfo->sub_count);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.ckusm", count);
+ ret = dict_set_int64 (dict, key, volinfo->cksum);
+ if (ret)
+ goto out;
+
+ list_for_each_entry (brickinfo, &volinfo->bricks, brick_list) {
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.brick%d.hostname",
+ count, i);
+ ret = dict_set_str (dict, key, brickinfo->hostname);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.brick%d.path",
+ count, i);
+ ret = dict_set_str (dict, key, brickinfo->path);
+ if (ret)
+ goto out;
+
+ i++;
+ }
+
+
+out:
+ gf_log ("", GF_LOG_DEBUG, "Returning with %d", ret);
+
+ return ret;
+}
+
+int32_t
+glusterd_build_volume_dict (dict_t **vols)
+{
+ int32_t ret = -1;
+ dict_t *dict = NULL;
+ glusterd_conf_t *priv = NULL;
+ glusterd_volinfo_t *volinfo = NULL;
+ int32_t count = 0;
+
+ priv = THIS->private;
+
+ dict = dict_new ();
+
+ if (!dict)
+ goto out;
+
+ list_for_each_entry (volinfo, &priv->volumes, vol_list) {
+ count++;
+ ret = glusterd_add_volume_to_dict (volinfo, dict, count);
+ if (ret)
+ goto out;
+ }
+
+
+ ret = dict_set_int32 (dict, "count", count);
+ if (ret)
+ goto out;
+
+ *vols = dict;
+out:
+ gf_log ("", GF_LOG_DEBUG, "Returning with %d", ret);
+ if (ret)
+ dict_destroy (dict);
+
+ return ret;
+}
+
+int32_t
+glusterd_compare_friend_volume (dict_t *vols, int32_t count, int32_t *status)
+{
+
+ int32_t ret = -1;
+ char key[512] = {0,};
+ glusterd_volinfo_t *volinfo = NULL;
+ char *volname = NULL;
+ uint32_t cksum = 0;
+ int32_t version = 0;
+
+ GF_ASSERT (vols);
+ GF_ASSERT (status);
+
+ snprintf (key, sizeof (key), "volume%d.name", count);
+ ret = dict_get_str (vols, key, &volname);
+ if (ret)
+ goto out;
+
+ ret = glusterd_volinfo_find (volname, &volinfo);
+
+ if (ret) {
+ *status = GLUSTERD_VOL_COMP_UPDATE_REQ;
+ ret = 0;
+ goto out;
+ }
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.version", count);
+ ret = dict_get_int32 (vols, key, &version);
+ if (ret)
+ goto out;
+
+ if (version != volinfo->version) {
+ //Mismatch detected
+ ret = 0;
+ gf_log ("", GF_LOG_ERROR, "Version of volume %s differ."
+ "local version = %d, remote version = %d",
+ volinfo->volname, volinfo->version, version);
+ *status = GLUSTERD_VOL_COMP_UPDATE_REQ;
+ goto out;
+ }
+
+ //Now, versions are same, compare cksums.
+ //
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.ckusm", count);
+ ret = dict_get_uint32 (vols, key, &cksum);
+ if (ret)
+ goto out;
+
+ if (cksum != volinfo->cksum) {
+ ret = 0;
+ gf_log ("", GF_LOG_ERROR, "Cksums of volume %s differ."
+ " local cksum = %d, remote cksum = %d",
+ volinfo->volname, volinfo->cksum, cksum);
+ *status = GLUSTERD_VOL_COMP_RJT;
+ goto out;
+ }
+
+ *status = GLUSTERD_VOL_COMP_SCS;
+
+out:
+ gf_log ("", GF_LOG_DEBUG, "Returning with ret: %d, status: %d",
+ ret, *status);
+ return ret;
+}
+
+int32_t
+glusterd_import_friend_volume (dict_t *vols, int count)
+{
+
+ int32_t ret = -1;
+ glusterd_conf_t *priv = NULL;
+ char key[512] = {0,};
+ glusterd_volinfo_t *volinfo = NULL;
+ char *volname = NULL;
+ char *hostname = NULL;
+ char *path = NULL;
+ glusterd_brickinfo_t *brickinfo = NULL;
+ glusterd_brickinfo_t *tmp = NULL;
+ int new_volinfo = 0;
+ int i = 1;
+
+ GF_ASSERT (vols);
+
+ snprintf (key, sizeof (key), "volume%d.name", count);
+ ret = dict_get_str (vols, key, &volname);
+ if (ret)
+ goto out;
+
+ priv = THIS->private;
+
+ ret = glusterd_volinfo_find (volname, &volinfo);
+
+ if (ret) {
+ ret = glusterd_volinfo_new (&volinfo);
+ if (ret)
+ goto out;
+ strncpy (volinfo->volname, volname, sizeof (volinfo->volname));
+ new_volinfo = 1;
+ }
+
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.type", count);
+ ret = dict_get_int32 (vols, key, &volinfo->type);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.brick_count", count);
+ ret = dict_get_int32 (vols, key, &volinfo->brick_count);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.version", count);
+ ret = dict_get_int32 (vols, key, &volinfo->version);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.status", count);
+ ret = dict_get_int32 (vols, key, (int32_t *)&volinfo->status);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.sub_count", count);
+ ret = dict_get_int32 (vols, key, &volinfo->sub_count);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.ckusm", count);
+ ret = dict_get_uint32 (vols, key, &volinfo->cksum);
+ if (ret)
+ goto out;
+
+ list_for_each_entry_safe (brickinfo, tmp, &volinfo->bricks,
+ brick_list) {
+ ret = glusterd_brickinfo_delete (brickinfo);
+ if (ret)
+ goto out;
+ }
+
+ while (i <= volinfo->brick_count) {
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.brick%d.hostname",
+ count, i);
+ ret = dict_get_str (vols, key, &hostname);
+ if (ret)
+ goto out;
+
+ memset (&key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "volume%d.brick%d.path",
+ count, i);
+ ret = dict_get_str (vols, key, &path);
+ if (ret)
+ goto out;
+
+ ret = glusterd_brickinfo_new (&brickinfo);
+ if (ret)
+ goto out;
+
+ strcpy (brickinfo->path, path);
+ strcpy (brickinfo->hostname, hostname);
+
+ list_add_tail (&brickinfo->brick_list, &volinfo->bricks);
+
+ i++;
+ }
+
+ if (new_volinfo) {
+ list_add_tail (&volinfo->vol_list, &priv->volumes);
+ ret = glusterd_store_create_volume (volinfo);
+ } else {
+ ret = glusterd_store_update_volume (volinfo);
+ }
+
+ ret = glusterd_volume_create_generate_volfiles (volinfo);
+ if (ret)
+ goto out;
+
+ //volinfo->version++;
+
+ ret = glusterd_volume_compute_cksum (volinfo);
+ if (ret)
+ goto out;
+
+
+out:
+ gf_log ("", GF_LOG_DEBUG, "Returning with ret: %d", ret);
+ return ret;
+}
+
+
+int32_t
+glusterd_import_friend_volumes (dict_t *vols)
+{
+ int32_t ret = -1;
+ int32_t count = 0;
+ int i = 1;
+
+ GF_ASSERT (vols);
+
+ ret = dict_get_int32 (vols, "count", &count);
+ if (ret)
+ goto out;
+
+ while (i <= count) {
+ ret = glusterd_import_friend_volume (vols, i);
+ if (ret)
+ goto out;
+
+ i++;
+ }
+
+out:
+ gf_log ("", GF_LOG_DEBUG, "Returning with %d", ret);
+ return ret;
+}
+
+int32_t
+glusterd_compare_friend_data (dict_t *vols, int32_t *status)
+{
+ int32_t ret = -1;
+ int32_t count = 0;
+ int i = 1;
+
+ GF_ASSERT (vols);
+ GF_ASSERT (status);
+
+ ret = dict_get_int32 (vols, "count", &count);
+ if (ret)
+ goto out;
+
+ while (i <= count) {
+ ret = glusterd_compare_friend_volume (vols, i, status);
+ if (ret)
+ goto out;
+
+ if (GLUSTERD_VOL_COMP_RJT == *status) {
+ ret = 0;
+ goto out;
+ }
+
+ i++;
+ }
+
+ if (GLUSTERD_VOL_COMP_UPDATE_REQ == *status) {
+ ret = glusterd_import_friend_volumes (vols);
+ if (ret)
+ goto out;
+ }
+
+out:
+ gf_log ("", GF_LOG_DEBUG, "Returning with ret: %d, status: %d",
+ ret, *status);
+
+ return ret;
+}