[Ocfs2-users] Nodes keep Fencing

[Byron Albert]

Hello group,

 I have setup a 3 node cluster running SLES 10sp1. These nodes are all
running in vmware sharing a physical LUN from our fiber storage backend.
About twice a day the systems are all fencing and panic'ing locking up. The
message is took 58007ms to do waiting for write completion then fences. We
have tried upping all the time outs to the ones found on the site.

O2CB_HEARTBEAT_THRESHOLD = 31
O2CB_IDLE_TIMEOUT_MS = 30000
O2CB_KEEPALIVE_DELAY_MS = 2000
O2CB_RECONNECT_DELAY_MS = 2000

Today I added elevator=deadline to see if that fixes it. 
Here are the versions we are running

pbywebadmin1:~ # cat /proc/fs/ocfs2/version 
OCFS2 1.2.5-2-SLES-r3027 Tue Mar 27 16:33:19 EDT 2007 (build sles) 
pbywebadmin1:~ # uname -a 
Linux pbywebadmin1 2.6.16.53-0.16-default #1 Tue Oct 2 16:57:49 UTC 2007
i686 i686 i386 GNU/Linux 
pbywebadmin1:~ # rpm -qa | grep ocfs 
ocfs2-tools-1.2.3-0.7


Any suggestions on what is needed to get this to work without issues. There
is no heavy IO on this system the crashes happen with just random light IO.

Byron

Byron Albert
Prolifics
balbert at prolifics.com
Office: 646-201-4981 Mobile: 203-512-7456

2007 IBM Award Winner for Overall Technical Excellence
SOA. Building the Future into Your Business 

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