Can't get lock for logical volume group

After performing a rolling cluster upgrade (from OES 2 to OES 11 SP2), and all nodes were completely upgraded, Yast->Partitioner would not show any information for the local disk (on any node).

Upon checking with a number of tools like lvdisplay -a, vgs, and lvs; an error was returned (on every node in the cluster):

In this case, a cluster restart 600 resolved the matter.  As the command indicates, it takes all resources offline and restarts clustering services after 600 seconds (default is 60 seconds).  If you have many active and large volumes, a longer time is helpful so they offline correctly.

One of the nodes did not release an lvm lock, or there was a corrupted NCS lock.