Re: [Qemu-devel] live migration + licensing issue.

[Anshul Makkar]

Yeah, but I think if we have to take advantage of live vertical
scaling (memory hotplug, memory hotunplug, cpu hotplug) then we need
to upgrade to pc model 1.2.

pc model 1.0 will be incompatible with qemu 2.0 wrt. LVS feature as
the bus architecture and the way how dimms are handled has changed
from pc model 1.0 in qemu 1.0 to pc model 2.0 (pc-i440fx-2.1) to qemu
2.0.

Yeah, true, if we have to avoid the licensing issue then we have to
use same PC model.

Anshul Makkar

On Fri, Jul 11, 2014 at 1:19 AM, Eric Blake <address@hidden> wrote:
> On 07/08/2014 03:10 PM, Anshul Makkar wrote:
>> Hi,
>>
>> Yeah, I am aware of this option. But the point where I am concerned is
>> that if Windows VM is running in QEMU 1.0 with pc-model 1.0 and then I
>> upgrade the QEMU to 2.0 and I specify machine as pc-1.2, then Windows
>> will see this as change in hardware and complain about the license.
>
> That's by design.  If you were running under qemu 1.0 with pc-model 1.0,
> then when you upgrade to qemu 2.0, you must STILL use pc-model 1.0 (and
> not pc-1.2) if you want your guest to see the same hardware as what the
> older qemu was providing, and therefore avoid a relicensing issue.
>
> --
> Eric Blake   eblake redhat com    +1-919-301-3266
> Libvirt virtualization library http://libvirt.org
>