Re: [libvirt] kvm savevm/loadvm
Quoting Jason Krieg (jason.krieg(a)collax.com):
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
Thanks! That worked beautifully. Well, interestingly, the
first time I made this change, the '<driver name=' line got
cut off so the type and cache options were gone, but once it
let those stick, it worked great.
thanks!
-serge