Ocfs2 users - Jun 2012 - OCFS server panic issue

Hi,

I am running ocfs2 cluster on 6 nodes. The OS version is RHEL 5.7
(Kernel :- 2.6.18-308.1.1.el5) and the ocfs2 rpm versions are as below,

		[root at prod37 ~]# uname -r
		2.6.18-308.1.1.el5
		[root at prod37 ~]# rpm -qa |grep ocfs
		ocfs2-tools-devel-1.4.4-1.el5
		ocfs2-2.6.18-308.1.1.el5debug-1.4.7-1.el5
		ocfs2-2.6.18-308.1.1.el5-1.4.7-1.el5
		ocfs2console-1.4.4-1.el5
		ocfs2-tools-1.4.4-1.el5
		ocfs2-2.6.18-308.1.1.el5xen-1.4.7-1.el5
		ocfs2-2.6.18-308.1.1.el5-debuginfo-1.4.7-1.el5
		ocfs2-tools-debuginfo-1.4.4-1.el5

Frequently one of the nodes in the cluster is goes to panic state and
requires hard reboot to bring back the system , the alert log contents
on the panicked node during this period is as below,

		Jun  4 12:42:54 prod37 kernel: lockres:
O000000000000000023c87800000000, owner=2, state=0
		Jun  4 12:42:54 prod37 kernel:   last used: 4299790521,
refcnt: 5, on purge list: yes
		Jun  4 12:42:54 prod37 kernel:   on dirty list: no, on
reco list: no, migrating pending: no
		Jun  4 12:42:54 prod37 kernel:   inflight locks: 1, asts
reserved: 0
		Jun  4 12:42:54 prod37 kernel:   refmap nodes: [ 2 ],
inflight=1
		Jun  4 12:42:54 prod37 kernel:   granted queue:
		Jun  4 12:42:54 prod37 kernel:   converting queue:
		Jun  4 12:42:54 prod37 kernel:   blocked queue:
		Jun  4 14:22:25 prod37 syslogd 1.4.1: restart.
		Jun  4 14:22:25 prod37 kernel: klogd 1.4.1, log source /proc/kmsg started.
		Jun  4 14:22:25 prod37 kernel: Linux version
2.6.18-308.1.1.el5 (mockbuild at hs20-bc2-3.build.redhat.com) (gcc version
4.1.2 20080704 (Red Hat 4.1.2-52)) #1 SMP Fri Feb 17 16:51:01 EST 2012

Is this a known issue ? Any fix ?

Regards,

Ravi 

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