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[Linux-cluster] lvm locking problem



I have a two node cluster on RHEL5 with 2.0.52 version of clustering
that appears to be operating normally however, I cannot run the
pvdisplay command:

[root server1 ~]# pvdisplay
  Error locking on node server2: Command timed out
  Error locking on node server1: Command timed out
  Unable to obtain global lock.

I then run this command but it just hangs after displaying this output:
[root server1 ~]# /etc/init.d/clvmd status
clvmd (pid 16888 8497) is running...


Here's clustat:
Cluster Status for server @ Sat Mar 19 14:30:05 2011
Member Status: Quorate

 Member Name                                                     ID   Status
 ------ ----                                                     ---- ------
 server1                                                            1
Online, Local, rgmanager
 server2                                                            2
Online, rgmanager

 Service Name                                                 Owner
(Last)                                      State
 ------- ----                                                 -----
------                                      -----
 service:server-nfs-a                                         server1
                                         started
 service:server-nfs-b                                         server2
                                         started
 service:server-nfs-c                                         server1
                                         started
 service:server-nfs-h                                         server2
                                         started
 service:server-nfs-i                                         server2
                                         started
 service:postgresql                                           server1
                                         started


Not sure where to begin troubleshooting this.  Any ideas?


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