[ClusterLabs] Early VM resource migration

[Ken Gaillot]

On 12/16/2015 02:09 AM, Klechomir wrote:
> Hi list,
> I have a cluster with VM resources on a cloned active-active storage.
> 
> VirtualDomain resource migrates properly during failover (node standby),
> but tries to migrate back too early, during failback, ignoring the
> "order" constraint, telling it to start when the cloned storage is up.
> This causes unnecessary VM restart.
> 
> Is there any way to make it wait, until its storage resource is up?

Hi Klecho,

If you have an order constraint, the cluster will not try to start the
VM until the storage resource agent returns success for its start. If
the storage isn't fully up at that point, then the agent is faulty, and
should be modified to wait until the storage is truly available before
returning success.

If you post all your constraints, I can look for anything that might
affect the behavior.