[Pacemaker] Advisory ordering on clones not working?

Adrian Fita adrian.fita at gmail.com
Mon Feb 20 06:26:50 EST 2012


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.

--
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
>>
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>
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