[Engine-devel] Setting cluster CPU

[Oved Ourfalli]

----- Original Message -----
> From: "Sandro Bonazzola" <sbonazzo at redhat.com>
> To: "Michal Skrivanek" <michal.skrivanek at redhat.com>, "Oved Ourfalli" <ovedo at redhat.com>, "Roy Golan"
> <rgolan at redhat.com>
> Cc: "engine-devel" <engine-devel at ovirt.org>
> Sent: Tuesday, December 10, 2013 9:12:14 AM
> Subject: Re: [Engine-devel] Setting cluster CPU
> 
> Il 09/12/2013 19:37, Michal Skrivanek ha scritto:
> > 
> > 
> >> On 09 Dec 2013, at 18:58, Oved Ourfalli <ovedo at redhat.com> wrote:
> >>
> >>
> >>
> >> ----- 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?
> > 
> > Not sure. I thought this is None to something, where it should work
> > automatically without specifying anything. Just add an operational host
> 
> Well, here the issue is that while deploying hosted-engine VM, I'm on a
> SandyBridge host, with 1 VM running on it (the hosted engine VM).
> That VM has been created with CPU model Westmere to be able to migrate it to
> other hosts Westmere compatible.
> But the Default cluster is automatically set to SandyBridge when I add the
> host also if I specify Westmere as CPU family in Host parameter.
> We may be able to set manually the CPU level later somehow, but since we've
> already asked the user about the CPU level I think we should avoid to ask
> the user to change it again later. See Bug 1034821 - Hosted-setup asks for
> CPU type but it doesn't set cluster to that CPU Level
> 

You can set the CPU level through the SDK, after you add the host (didn't check that, but see no reason it won't work).

> 
> > 
> >>
> >>> 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
> >>>> _______________________________________________
> >>>> Engine-devel mailing list
> >>>> Engine-devel at ovirt.org
> >>>> http://lists.ovirt.org/mailman/listinfo/engine-devel
> >>>
> >>> _______________________________________________
> >>> Engine-devel mailing list
> >>> Engine-devel at ovirt.org
> >>> http://lists.ovirt.org/mailman/listinfo/engine-devel
> >>>
> 
> 
> --
> Sandro Bonazzola
> Better technology. Faster innovation. Powered by community collaboration.
> See how it works at redhat.com
> _______________________________________________
> Engine-devel mailing list
> Engine-devel at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/engine-devel
>