[ClusterLabs] Antw: Re: Utilization zones

Ulrich Windl Ulrich.Windl at rz.uni-regensburg.de
Tue Apr 19 07:57:35 EDT 2016

>>> Ferenc Wágner <wferi at niif.hu> schrieb am 19.04.2016 um 13:42 in Nachricht
<87y489x1s2.fsf_-_ at lant.ki.iif.hu>:
> "Ulrich Windl" <Ulrich.Windl at rz.uni-regensburg.de> writes:
>> Ferenc Wágner <wferi at niif.hu> schrieb am 18.04.2016 um 17:07 in Nachricht
>>> I'm using the "balanced" placement strategy with good success.  It
>>> distributes our VM resources according to memory size perfectly.
>>> However, I'd like to take the NUMA topology into account.  That means
>>> each host should have several capacity pools (of each capacity type) to
>>> arrange the resources in.  Can Pacemaker do something like this?
>> I think you can, but depending on VM technology, the hypervisor may
>> not care much about NUMA. More details?
> The NUMA technology would be handled by the resource agent, if it was
> told by Pacemaker which utilization zone to use on its host.  I just
> need the policy engine to do more granular resource placement and
> communicate the selected zone to the resource agents on the hosts.
> I'm pretty sure there's no direct support for this, but there might be
> different approaches I missed.  Thus I'm looking for ideas here.

My initial idea was this: Define a memory resource for every NUMA pool on each
host, the assign your resources to NUMA pools (utilization): The resources will
pick some host, but when one pool is full, your resources cannot go to another
pool. Is something like this what you wanted?

> -- 
> Thanks,
> Feri
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