[Ocfs2-users] ocfs2 fencing because connected to half-quorum

[Sunil Mushran]

Do you have a netdump server setup?

Something is going wrong on the first node due to which the net
connection is getting lost. However, the disk hb is going strong.
And that is a problem. From the looks of it, this node is the lower
numbered node.

Setup a netdump server to catch the msgs. Also, ensure you have
the auto-reboot on panic setup as listed in the FAQ.

Q03	How do I configure my system to auto-reboot after a panic?
A03	To auto-reboot system 60 secs after a panic, do:
	# echo 60 > /proc/sys/kernel/panic
	To enable the above on every reboot, add the following to
	/etc/sysctl.conf:
	kernel.panic = 60


Zhang, George wrote:
>
> Hi,
>
>  
>
> I have a 2-node 9i RAC (9.2.0.6) installation on Redhat Enterprise 
> Linux 4 AS using OCFS2 (1.2.1). The second node will fence after 
> running for about 1 to 2 hours, and it has to be turned off the hard 
> way. The database is shutdown after the fencing. The error message on 
> the console of node 2 is like this:
>
> o2net_idle_timer:1309 here are some times that might help debug the 
> situation: (tmr 1151007627.450024 now 1151007637.449151 dr 
> 1151007627.449958 adv 1151007627.450026:1151007627.450027 func 
> (34c39ade:505) 1151007291.383817:1151007291.383824)
> (3,0):o2quo_make_decision:143 ERROR: fencing this node because it is 
> connected to a half-quorum of 1 out of 2 nodes which doesn't include 
> the lowest active node 0
> (3,0):o2hb_stop_all_regions:1888 ERROR: stopping heartbeat on all 
> active regions.
> kernel panic - not syncing: ocfs2 is very sorry to be fencing this 
> system by panicing
>
>  
>
> Help is appreciated.
>
>  
>
> Thanks,
>
> George
>
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