[Engine-devel] cluster emulation mode feature

[Itamar Heim]

----- Omer Frenkel <ofrenkel at redhat.com> wrote:
> 
> 
> ----- Original Message -----
> > From: "Roy Golan" <rgolan at redhat.com>
> > Cc: engine-devel at ovirt.org
> > Sent: Sunday, June 9, 2013 8:56:45 AM
> > Subject: Re: [Engine-devel] cluster emulation mode feature
> > 
> > On 06/08/2013 10:33 PM, Itamar Heim wrote:
> > > On 06/06/2013 08:17 AM, Roy Golan wrote:
> > >> Hi,
> > >>
> > >> A new wiki has been published on Cluster Emulation mode
> > >> http://www.ovirt.org/Cluster_emulation_modes
> > >>
> > >> Please review.
> > >>
> > >> Thanks,
> > >> Roy
> > >> _______________________________________________
> > >> Engine-devel mailing list
> > >> Engine-devel at ovirt.org
> > >> http://lists.ovirt.org/mailman/listinfo/engine-devel
> > >
> > > strange, I thought the EmulatedMachine config value we currently have
> > > was also used to validate host support, but seems we were missing that
> > > part.
> > 
> > I was also puzzled while doing git grep -i emulatedmachine
> > 
> > >
> > > what will happen with the current EmulatedMachine config value?
> > 
> > The OVF builder will use the cluster config and EmulatedMachine will be
> > deleted
> > 
> > >
> > > what happens when cluster emulation mode changes to hosts not matching
> > > it?
> > 
> > Updating cluster's emulation mode is prohibited when active hosts has
> > running VMs.
> > if VMs are not running on them they will transit to non-op on the next
> > refresh
> > 
> 
> the emulated machines are reported on getCaps, not getStats, so not sure what refresh you refer to,
> anyway i think we should allow if no vms running but all active hosts support new value
> and block otherwise (if vms are running or one of the active hosts doesn't support new value)
> 
> iirc this is the logic for changing cpu type
> 

We allow changing cup while vms are running at least up
> > 
> > >
> > >
> > 
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> > 
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