[ClusterLabs] Antw: Re: Antw: Resource getting hard-flipped when node recovers

Ulrich Windl Ulrich.Windl at rz.uni-regensburg.de
Fri May 15 22:50:34 EDT 2015

>>> Matthew Vernon <mcv21 at cam.ac.uk> schrieb am 15.05.2015 um 18:27 in Nachricht
<55561E73.4070601 at cam.ac.uk>:
> On 15/05/15 08:22, Ulrich Windl wrote:
>>>>> Matthew Vernon <mcv21 at cam.ac.uk> schrieb am 14.05.2015 um 19:24 in Nachricht
>> <5554DA48.3050709 at cam.ac.uk>:
>>> Hi,
>>> I have a 3-node pacemaker/corosync cluster (output of crm configure save
>>> below); my resource is a xen guest, and if I make its live node standby,
>>> then it is live-migrated, as you'd expect.
>>> If I hard-power-off the live node, then the other xenhost node starts up
>>> the guest, as you'd expect.
>>> When, however, I turn the formerly-live node back on, the guest is
>>> stopped on the newer-live node, and started on the formerly-live node again.
>>> I don't mind this moving, but I do mind that it's a stop-and-start
>>> rather than a migration. Can I stop this happening?
>> I'd like to know the answer as well (we use a similar scenario), but
>> I guess when you "hard powerd off" your node the cluster recorded
>> some problem for the node that might not have been cleared when you
>> started it up again. Did you check for errors before? (I use to run
>> crm_mon -1Arfj)
> I didn't, though I was running crm_mon at the time, and don't recall
> any. Also, I'm not sure why that should result in a stop-and-start
> rather than migrate happening?

My idea was that the cluster had recorded a "migration failed", so wouldn't try migration again until cleanup.

> Regards,
> Matthew
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