[Engine-devel] Setting cluster CPU

[Oved Ourfalli]

----- Original Message -----
> From: "Michal Skrivanek" <michal.skrivanek at redhat.com>
> To: "Sandro Bonazzola" <sbonazzo at redhat.com>, "Roy Golan" <rgolan at redhat.com>
> Cc: "engine-devel" <engine-devel at ovirt.org>
> Sent: Monday, December 9, 2013 5:50:49 PM
> Subject: Re: [Engine-devel] Setting cluster CPU
> 
> 
> On Dec 9, 2013, at 16:01 , Sandro Bonazzola <sbonazzo at redhat.com> wrote:
> 
> > Hi,
> > I'm trying to set the cluster CPU type while adding the first host to the
> > Default cluster.
> > 
> > I know how to set the CPU type on a new cluster, since I'll do that in AIO
> > plugin.
> > But I'm not sure to understand how to set the CPU on an existing cluster.
> > 
> > Should it be enough to specify cpu arg while adding the host to the
> > cluster?
> > (before adding an host, cpu is None on the cluster)
> > Because I'm trying to do that without success (obtaining a sandybridge
> > cluster while specifying westmere cpu).
> 
> The CPU should be set from the first host if None. That is needed for the PPC
> support. Roy, we talked about it recently, where are we with this patch.
> 

We already support modifying the CPU level of an existing cluster. If changing it to a higher level then we just change it.
If changing it to a lower level, and there are running VMs on the cluster, then we warn the user that some VMs might not be migrate-able, as we added a scheduling filter to filter out hosts with improper CPU level.

Unless I'm missing something, that covers the use-case, isn't it?

> Thanks,
> michal
> 
> > 
> > Michael, can you take a look at http://gerrit.ovirt.org/22129 and advise?
> > 
> > 
> > --
> > Sandro Bonazzola
> > Better technology. Faster innovation. Powered by community collaboration.
> > See how it works at redhat.com
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