[Pacemaker] resource dependency

Andrew Beekhof andrew at beekhof.net
Fri Nov 20 13:35:59 EST 2009


On Fri, Nov 20, 2009 at 5:42 PM, Alexandre Biancalana
<biancalana at gmail.com> wrote:
> Hi list,
>
>  I'm building a 4 node cluster where 2 nodes will export drbd devices
> via ietd iscsi target (storage nodes) and other 2 nodes will run xen
> vm (app nodes) stored in lvm partition accessed via open-iscsi
> initiator, using multipath to failover.
>
>  Configuring the cluster resources order I came up with a situation
> that I don't find a solution. The xen vm resources depends of iscsi
> initiator resource to run, I have two iscsi initiator resources, one
> for each storage node, how can I make the vm resources dependent on
> any iscsi initiator resources ?

The cluster can't express this case yet.
But its on the to-doo list.

>
>  I think in create a clone of the iscsi initiator resource, use rules
> to change the clone options in a way that I can have two clones per
> app node with different portal parameter. This way I could make the vm
> resouces dependency on this clone. Is this possible ?
>
>  I'm using debian-lenny with the packages described at
> http://www.clusterlabs.org/wiki/Debian_Lenny_HowTo
>
> Excuse me for the bad english.
>
> Best Regards,
>
> Alexandre
>
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