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[Li Wang <foxban@xxxxxxxxx>]

Thanks all for replying.

We want to stick on to the Xen Hypervisor for some reason.

1. Does the community plan to support this feature?
2. Could I submit this request to the blueprint? My team would like to
contribute on it if necessary.
3. or some good reasons to migrate from Xen to KVM?

Regards
 在 2012-6-22 上午2:52，"Nathanael Burton" <nathanael.i.burton@xxxxxxxxx>写道：

> Seems like an attribute that could be added to instance types / flavors
> that could be passed on to the scheduler and virt layers.
>
> Nate
> On Jun 21, 2012 2:12 PM, "Daniel P. Berrange" <berrange@xxxxxxxxxx> wrote:
>
>> On Fri, Jun 22, 2012 at 12:17:11AM +0800, Huang Zhiteng wrote:
>> > Of course it is possible.  What kind of issue did you run into?
>> >
>> > On Thu, Jun 21, 2012 at 5:52 PM, Wang Li <foxban@xxxxxxxxx> wrote:
>> > > hi,all
>> > >
>> > > I need to run virtual machines on Xen Hypervisor in HVM mode,
>> > > is it possible when using libvirt?
>>
>> Actually, this is not currently possible. For reasons I don't
>> know, the libvirt driver currently hardcodes use of paravirtualized
>> guests when connected to Xen hosts. It does not allow use of HVM
>> guests.  There's no particularly good technical reason why it can't
>> be made to work. There'd need to be a way to tag instance types
>> with HVM vs paravirt, in addition to their architecture. The
>> libvirt driver would have to expose whether each host supports
>> paravirt or HVM or both. The schedular would then have to take
>> this into account when placing guests.
>>
>> Until this is done, if you really need to run HVM guests, then
>> you'll have to use KVM  instead of Xen.
>>
>> Regards,
>> Daniel
>> --
>> |: http://berrange.com      -o-
>> http://www.flickr.com/photos/dberrange/ :|
>> |: http://libvirt.org              -o-
>> http://virt-manager.org :|
>> |: http://autobuild.org       -o-
>> http://search.cpan.org/~danberr/ :|
>> |: http://entangle-photo.org       -o-
>> http://live.gnome.org/gtk-vnc :|
>>
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