[Pacemaker] corosync, ocfs2_controld.pcmk insane?

[Matthew O'Connor]

On 05/11/2012 12:54 PM, Lars Marowsky-Bree wrote:
> Which of course you can't do if you have actually any OCFS2 file systems
> mounted; that'd result in an immediate suicide of the node.
>
Indeed. :)  Happily, I've not created any on this cluster yet.  But yes, 
that is certainly no solution.  I had been working with whatever 
versions of the respective packages shipped with Ubuntu 12.04, and on 
that test cluster tried configuring and using CMAN.  Two things puzzled 
me: first, when cman would first crank up on node 1, ocfs2_controld.cman 
would immediately start consuming copious CPU (30-50%) until cman was 
started on node2.  Then it would go quiet.  Second, whenever I'd try to 
put either node into standby, it seemed like the DLM would fail 
catastrophically, taking out Pacemaker with it.  It happened almost 
every time with that version, and was quite frustrating.  With the 
resource disabled, both nodes could go in and out of standby without 
much, if any, complaint.  If this sounds like something worth 
investigating also, I would be happy to dig a little deeper.

I'll try strace also next time I see the issue.

Thanks!
-- Matt