[Pacemaker] "ERROR: Wrong stack o2cb" when trying to start o2cb service in Pacemaker cluster

[Andreas Kurz]

On 06/20/2012 01:43 PM, David Guyot wrote:
> Hello, everybody.
> 
> I'm trying to configure Pacemaker for using DRBD + OCFS2 storage, but
> I'm stuck with DRBD and controld up and o2cb doggedly displaying "not
> installed" errors. To do this, I followed the DRBD guide (
> http://www.drbd.org/users-guide-8.3/ch-ocfs2.html), with the difference
> that I was forced to disable DRBD fencing because it was interfering
> with Pacemaker fencing and stopping each nodes as often as it could.

Unfortunately you didn't share your Pacemaker configuration but you
definitely must not start any ocfs2 init script but let all be managed
by the cluster-manager.

Here is a brief setup description, also mentioning the tune.ocfs2 when
the Pacemaker stack is running:

http://www.hastexo.com/resources/hints-and-kinks/ocfs2-pacemaker-debianubuntu

And once this is running as expected you really want to reactivate the
DRBD fencing configuration.

Regards,
Andreas

-- 
Need help with Pacemaker?
http://www.hastexo.com/now

> 
> Now, as I said, I'm stuck with these errors (Malastare and Vindemiatrix
> being the 2 nodes of my cluster) :
> Failed actions:
>     p_o2cb_start_0 (node=Vindemiatrix, call=11, rc=5, status=complete):
> not installed
>     p_o2cb_monitor_0 (node=Malastare, call=4, rc=5, status=complete):
> not installed
> 
> Looking into logs, I find these messages :
> o2cb[19904]:    2012/06/20_09:04:35 ERROR: Wrong stack o2cb
> o2cb[19904]:    2012/06/20_09:04:35 ERROR: Wrong stack o2cb
> 
> I tried to manually test ocf:pacemaker:o2cb, but I got this result :
> root at Malastare:/home/david# export OCF_ROOT="/usr/lib/ocf"
> root at Malastare:/home/david# /usr/lib/ocf/resource.d/pacemaker/o2cb monitor
> o2cb[22387]: ERROR: Wrong stack o2cb
> root at Malastare:/home/david# echo $?
> 5
> 
> I tried the solution described on this message (
> http://oss.clusterlabs.org/pipermail/pacemaker/2009-December/004112.html),
> but tunefs.ocfs2 failed :
> root at Malastare:/home/david# cat /etc/ocfs2/cluster.conf
> node:
>     name = Malastare
>     cluster = ocfs2
>     number = 0
>     ip_address = 10.88.0.1
>     ip_port = 7777
> node:
>     name = Vindemiatrix
>     cluster = ocfs2
>     number = 1
>     ip_address = 10.88.0.2
>     ip_port = 7777
> cluster:
>     name = ocfs2
>     node_count = 2
> root at Malastare:/home/david# /etc/init.d/ocfs2 start
> root at Malastare:/home/david# tunefs.ocfs2 --update-cluster-stack /dev/drbd1
> Updating on-disk cluster information to match the running cluster.
> DANGER: YOU MUST BE ABSOLUTELY SURE THAT NO OTHER NODE IS USING THIS
> FILESYSTEM BEFORE MODIFYING ITS CLUSTER CONFIGURATION.
> Update the on-disk cluster information? yes
> tunefs.ocfs2: Unable to access cluster service - unable to update the
> cluster stack information on device "/dev/drbd1"
> root at Malastare:/home/david# /etc/init.d/o2cb start
> root at Malastare:/home/david# tunefs.ocfs2 --update-cluster-stack /dev/drbd1
> Updating on-disk cluster information to match the running cluster.
> DANGER: YOU MUST BE ABSOLUTELY SURE THAT NO OTHER NODE IS USING THIS
> FILESYSTEM BEFORE MODIFYING ITS CLUSTER CONFIGURATION.
> Update the on-disk cluster information? yes
> tunefs.ocfs2: Unable to access cluster service - unable to update the
> cluster stack information on device "/dev/drbd1"
> 
> I also tried to manually set the cluster stack using "echo pcmk >
> /sys/fs/ocfs2/cluster_stack" on both nodes, then restarting Corosync and
> Pacemaker, but error messages stayed. Same thing with resetting OCFS2
> FSs while cluster is on-line. Now I'm stuck, desperately waiting for
> help  Seriously, if some do-gooder would like to help me, I would
> greatly appreciate his or her help.
> 
> Thank you in advance for your answers.
> 
> Kind regards.
> 
> 
> 
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