Re: [Users] oVirt support for backup/restore
----- Original Message -----
On 04/19/2013 11:46 AM, Gianluca Cecchi wrote:
> On Fri, Apr 19, 2013 at 9:58 AM, Itamar Heim wrote:
>
>>
>> qemu-guest-agent isn't ovirt/rhev-guest-agent.
>> now that qemu started their own guest agent, ovirt/rhev-guest-agent isn't
>> used for things covered by the qemu-guest-agent.
>
> Ah, ok.
> SO after reading
> http://wiki.libvirt.org/page/Qemu_guest_agent
> some questions
>
> can we use ootb qemu-guest-agent with ovirt 3.2.1 if we have for
> example a CentOS 6 guest (with qemu-guest-agent-0.12.1.2-2.355)?
> Does oVirt create a virtio-serial port to communicate with libvit and
> does it use libvirt with any options to quiesce fs on guest?
iirc, it should work - testing/feedback would be welcome.
I believe vdsm does not create the virtio-serial port when starting the VM, so you'd
have to modify this behaviour with hooks [1].
Once you do that, whenever you create a live snapshot vdsm will notify libvirt to quiesce
first.
Note that afaik, quiesce in qemu-ga is only supported for Linux guests. VSS quiesce
support patches have been submitted, but I'm not sure what the status is there yet.
[1] Hooks preso: http://www.ovirt.org/File:OVirt-hooks-netapp-jan2013.odp
>
> Can one use as an alternative the command fsfreeze in CentOS 6.4 guest
> (even if in tech preview) as in :
>
https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Lin...
>
what i remember is that it supposed to be pluggable/configurable for you
to run the relevant commands you want.
ayal may remember better