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

Lars Marowsky-Bree lmb at suse.com
Fri May 3 06:51:12 EDT 2013

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?

> 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.


Architect Storage/HA
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