[Pacemaker] How does the cluster migrate resources on over-subscription of utilizations?

[Michael Schwartzkopff]

Am Freitag, 3. Mai 2013, 12:51:12 schrieb Lars Marowsky-Bree:
> On 2013-05-03T11:06:06, Michael Schwartzkopff <misch at clusterbau.com> wrote:
> > Hi,
> > 
> > If I have a cluster with the placement-strategy="minimal" and the CRM
> > detects that the utilizations of all resources on a node somehow do not
> > match the utilizations offered by that node, how does the CRM react?
> 
> Hm. So, pacemaker shouldn't have over-allocated resources in the first
> place. I assume you mean what happens when you change the utilization
> parameters later?

Yes.

> > stop-start:
> > Does ist stop the over-subscripbed resoures and start it on an other node?
> > 
> > migrate:
> > Or does the CRM honor the allow-migrate attribute of the resources, so the
> > over-subscribed resources could smoothly move to another node without
> > interruption?
> 
> It's supposed to migrate, yes.

Cool. I'll try if I find a test system.

-- 
Dr. Michael Schwartzkopff
Guardinistr. 63
81375 München

Tel: (0163) 172 50 98
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