Cluster renaming not reflected properly in luci gui/cannot add GFS2 filesystem

Issue

• During the cluster configuration, it was noted that the cluster was initially setup via luci and there was a typo with cluster name (testclus).

• For consistencies sake, we renamed the cluster name in /etc/cluster/cluster.conf to testcluster and incremented the config_version and things seemed good. However, now we are unable to add a new GFS2 resource to cluster and following errors are observed in /var/log/luci/luci.log:

  10:28:18,063 INFO  [luci.controllers.cluster] User "ricci" Created global resource "resource1" in cluster "testclus"
  10:28:18,065 ERROR [luci.lib.db_helpers] Database object for cluster "testclus" not found
  Traceback (most recent call last):
    File "/usr/lib64/python2.6/site-packages/luci/lib/db_helpers.py", line 30, in get_cluster_db_obj
      db_obj = DBSession.query(Cluster).filter_by(name=unicode(cluster_name)).one()
    File "/usr/lib/python2.6/site-packages/sqlalchemy/orm/query.py", line 1257, in one
      raise orm_exc.NoResultFound("No row was found for one()")
  NoResultFound: No row was found for one()
  Error - <type 'exceptions.KeyError'>: u'pg01'
  [...]
  

• It was also noticed that within the luci gui, it's still going by the old misspelled cluster name, and this seems to be causing trouble in adding resources. What's the best way to fix this?