[Pacemaker] Advisory ordering on clones not working?

Andrew Beekhof andrew at beekhof.net
Mon Feb 20 06:36:45 EST 2012


On Mon, Feb 20, 2012 at 10:26 PM, Adrian Fita <adrian.fita at gmail.com> wrote:
> Thanks, I figured it out by now. But the real problem I'm facing is
> explained in http://oss.clusterlabs.org/pipermail/pacemaker/2012-February/013124.html
> . Please also take a look there. This advisory thing was me trying to
> solve the problem described in that message.

Ok, I see that thread.  I'll get to that one soon.

>
> --
> Fita Adrian
>
> On Mon, Feb 20, 2012 at 13:11, Andrew Beekhof <andrew at beekhof.net> wrote:
>> On Wed, Feb 15, 2012 at 12:40 AM, Adrian Fita <adrian.fita at gmail.com> wrote:
>>> Hi. I'm trying something like this: "crm configure order order_id 0:
>>> nfs_server nfs_mount", but nfs_mount doesn't start after nfs_server,
>>> instead it starts at pacemaker startup, when nfs_server isn't even
>>> started.
>>
>> Right.  Did you read what advisory ordering is supposed to do?
>>
>>   http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/ch06s03s02.html
>>
>>
>>> The reason I'm doing this is because nfs_mount is a clone of NFS
>>> filesystem mounts that are mounted on each node in the cluster. The
>>> NFS mounts are then used by some processes that read/write stuff in
>>> those NFS mounts. If I do "crm configure order order_id inf:
>>> nfs_server nfs_mount", on a node failure, all the nfs_mounts instances
>>> get restarted causing the processes that use them to fail or get
>>> restarted themselves. With advisory ordering I saw that the nfs_mount
>>> instances are not all restarted, the ones that are not on the failed
>>> node are left alone, leaving the surviving processes alone also.
>>>
>>> So... Am I missing something? Is my approach wrong?
>>> --
>>> Fita Adrian
>>>
>>> _______________________________________________
>>> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
>>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>>>
>>> Project Home: http://www.clusterlabs.org
>>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>>> Bugs: http://bugs.clusterlabs.org
>>
>> _______________________________________________
>> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>>
>> Project Home: http://www.clusterlabs.org
>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>> Bugs: http://bugs.clusterlabs.org
>
> _______________________________________________
> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://bugs.clusterlabs.org




More information about the Pacemaker mailing list