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authorJeff Darcy <jdarcy@redhat.com>2012-12-03 12:16:28 -0500
committerAnand Avati <avati@redhat.com>2012-12-04 14:42:30 -0800
commit924702de358160b2536138c073d293b76512838a (patch)
tree4b44790ef6500b3eca00d1cc78954b7ee19aad83 /xlators/mgmt/glusterd/src/glusterd-volume-ops.c
parent86b01a278b55b19adefe9625e586252a5c75b474 (diff)
glusterd: add "volume label" command
This command is necessary when the local disk/filesystem containing a brick is unexpectedly lost and then recreated. Since 961bc80c, trying to start the brick will fail because the trusted.glusterfs.volume-id xattr is missing, and if we can't start it then we can't replace-brick or self-heal so we're stuck in a permanently degraded state. This command provides a way to label the empty brick with the proper volume ID so that further repair actions become possible. Change-Id: I1c1e5273a018b7a6b8d0852daf111ddc3fddfdc2 BUG: 860297 Signed-off-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-on: http://review.gluster.org/4259 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-volume-ops.c')
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-volume-ops.c116
1 files changed, 116 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-volume-ops.c b/xlators/mgmt/glusterd/src/glusterd-volume-ops.c
index 263c8bf013b..9ddeedb1027 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volume-ops.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volume-ops.c
@@ -1241,6 +1241,52 @@ out:
return ret;
}
+int
+glusterd_op_stage_label_volume (dict_t *dict, char **op_errstr)
+{
+ int ret = -1;
+ char *volname = NULL;
+ glusterd_volinfo_t *volinfo = NULL;
+ gf_boolean_t exists = _gf_false;
+ char msg[2048] = {0};
+ char *brick = NULL;
+
+ ret = dict_get_str (dict, "volname", &volname);
+ if (ret) {
+ gf_log ("", GF_LOG_ERROR, "Unable to get volume name");
+ goto out;
+ }
+
+ exists = glusterd_check_volume_exists (volname);
+ ret = glusterd_volinfo_find (volname, &volinfo);
+ if (!exists) {
+ snprintf (msg, sizeof (msg), "Volume %s does not exist",
+ volname);
+ gf_log ("", GF_LOG_ERROR, "%s", msg);
+ *op_errstr = gf_strdup (msg);
+ ret = -1;
+ goto out;
+ }
+
+ ret = dict_get_str (dict, "brick", &brick);
+ if (ret) {
+ goto out;
+ }
+
+ ret = glusterd_volume_brickinfo_get_by_brick (brick, volinfo, NULL);
+ if (ret) {
+ snprintf (msg, sizeof (msg), "Incorrect brick %s "
+ "for volume %s", brick, volname);
+ gf_log ("", GF_LOG_ERROR, "%s", msg);
+ *op_errstr = gf_strdup (msg);
+ goto out;
+ }
+out:
+ gf_log ("", GF_LOG_DEBUG, "Returning %d", ret);
+
+ return ret;
+}
+
#ifdef HAVE_BD_XLATOR
int
glusterd_op_stage_bd (dict_t *dict, char **op_errstr)
@@ -2053,3 +2099,73 @@ out:
return ret;
}
+
+int
+glusterd_op_label_volume (dict_t *dict, char **op_errstr)
+{
+ int ret = -1;
+ glusterd_conf_t *priv = NULL;
+ glusterd_volinfo_t *volinfo = NULL;
+ glusterd_brickinfo_t *brickinfo = NULL;
+ xlator_t *this = NULL;
+ char *volname = NULL;
+ char *brick = NULL;
+ glusterd_brickinfo_t *tmpbrkinfo = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ priv = this->private;
+ GF_ASSERT (priv);
+
+ ret = dict_get_str (dict, "volname", &volname);
+ if (ret) {
+ gf_log ("", GF_LOG_ERROR, "volname not found");
+ goto out;
+ }
+
+ ret = dict_get_str (dict, "brick", &brick);
+ /* If no brick is specified, do log-rotate for
+ all the bricks in the volume */
+ if (ret) {
+ gf_log ("glusterd", GF_LOG_ERROR, "no brick specified");
+ goto out;
+ }
+
+ ret = glusterd_brickinfo_new_from_brick (brick, &tmpbrkinfo);
+ if (ret) {
+ gf_log ("glusterd", GF_LOG_ERROR,
+ "cannot get brickinfo from brick");
+ goto out;
+ }
+
+ ret = glusterd_volinfo_find (volname, &volinfo);
+ if (ret)
+ goto out;
+
+ ret = -1;
+ list_for_each_entry (brickinfo, &volinfo->bricks, brick_list) {
+ if (uuid_compare (brickinfo->uuid, MY_UUID))
+ continue;
+
+ if ((strcmp (tmpbrkinfo->hostname, brickinfo->hostname) ||
+ strcmp (tmpbrkinfo->path,brickinfo->path)))
+ continue;
+
+ ret = sys_lsetxattr (brickinfo->path, GF_XATTR_VOL_ID_KEY,
+ volinfo->volume_id,
+ sizeof(volinfo->volume_id), XATTR_CREATE);
+ if (ret) {
+ gf_log ("glusterd", GF_LOG_ERROR,
+ "failed to set %s on %s: %s",
+ GF_XATTR_VOL_ID_KEY, brickinfo->path,
+ strerror(errno));
+ }
+ break;
+ }
+
+out:
+ if (tmpbrkinfo)
+ glusterd_brickinfo_delete (tmpbrkinfo);
+
+ return ret;
+}