[Ocfs2-users] ocfs2 and device-mapper

[Sunil Mushran]

Definitely increase the hb timeout (O2CB_HEARTBEAT_THRESHOLD).
http://oss.oracle.com/projects/ocfs2/dist/documentation/ocfs2_faq.html#HEARTBEAT

That's for starters. To figure out why it dies, I will need to see the 
oops dump. But
my hunch is that it is hb related and that upping the default timeout 
will solve that.

The second issue is puzzling. I'll try to investigate that today.
 
Stephan Hendl wrote:
> Hello all,
>
> are there any issues concerning ocfs2 (v 1.2.3) and device-mapper-multipath-0.4.5-12.0.RHEL4? 
>
> I've build a 4 node cluster with two ocfs2 mounts on /dev/dm-0 and /dev/dm-1. Under heavy load the nodes dies after about two minutes reproducably ;-(( Once I've loaded the ocfs2 modules it seems to me that both modules (device-mapper-multipath related as well as ocfs related) are affecting each other. During the time of loading the ocfs modules there went some multipath-paths away and came back again after completing the ocfs module load.
>
> Regards,
> Stephan
>
>
>
> Dr. Stephan Hendl
> Systemmanagement
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