On 07/20/2010 04:24 PM, Serge Hallyn wrote:
Quoting Daniel P. Berrange (berrange(a)redhat.com):
> On Tue, Jul 20, 2010 at 05:17:43AM -0500, Serge Hallyn wrote:
>
>> Hi,
>>
>> virsh has save/restore to do a one-time save+shutdown. But it
>> does not expose kvm's savevm/restorevm, which let's me do
>> incremental snapshots. Is there a specific reason why that
>> is not exposed in libvirt, or is it just that noone has
>> implemented it?
>>
> This is included in the 'snapshot' APIs / virsh commands as of 0.8.1
> libvirt release
>
Oh, excellent! (Alas, my libvirt 0.8.1 doesn't seem to think that
my qcow2 images can support snapshots, but I"ll have to look into
that some more)
You will need to set the driver type <driver name='qemu'
type='qcow2'/>
example:
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='writethrough'/>
<source file='/var/lib/vm/data/images/debian.img'/>
<target dev='vda' bus='virtio'/>
</disk>
Regards,
Jason