libvirt users - Feb 2018 - snapshot of a guest with two disks

On Fri, Feb 16, 2018 at 04:37:38PM +0100, Lentes, Bernd wrote:

[...]
> Hi,
> 
> again thanks for your quick answer. I had a look on
> https://wiki.libvirt.org/page/Live-disk-backup-with-active-blockcommit
> and i liked it. I'm thinking of upgrading my systems to SLES 12 SP3.
> With that i have qemu 2.9.1 and libvirt 3.3.0, so it should work.
Yep.
> Does this procedure also work with raw files ?
Your *base* image can (IIRC) be raw, but all the overlay files _must_ be
QCOW2.  But again, you can test it in 10 minutes on a VM :-)

-- 
/kashyap

Hi,

i just realized that i have a guest with two disks. What would be the appropiate
way to snapshot both of them ?

virsh snapshot-create-as --domain guest --diskspec
vda,file=/path/to/snapshot/snapshot1.qcow2 -disk-only --atomic &&
virsh snapshot-create-as --domain guest --diskspec
vdb,file=/path/to/snapshot/snapshot2.qcow2 -disk-only --atomic

or

virsh snapshot-create-as --domain guest --diskspec
vda,file=/path/to/snapshot/snapshot1.qcow2 --diskspec
vdb,file=/path/to/snapshot/snapshot2.qcow2 --disk-only --atomic



Bernd
 

Helmholtz Zentrum Muenchen
Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH)
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USt-IdNr: DE 129521671

On Tue, Feb 20, 2018 at 11:35:12AM +0100, Lentes, Bernd wrote:

(Just noticed this question.)
> Hi,
> 
> i just realized that i have a guest with two disks. What would be the
> appropiate way to snapshot both of them ?
[...]
> or
> 
> virsh snapshot-create-as --domain guest --diskspec
> vda,file=/path/to/snapshot/snapshot1.qcow2 --diskspec
> vdb,file=/path/to/snapshot/snapshot2.qcow2 --disk-only --atomic
The above should work.

[...]

-- 
/kashyap