libvirt users - Feb 2018 - Re: snapshot of a raw file - how to revert ?

On Fri, Feb 16, 2018 at 01:59:01PM +0100, Lentes, Bernd wrote:

[...]
> Hi Kashyap,
> 
> thanks for your quick and detailed answers. Just to be complete.
> The procedure in the above mentioned link does work with my old software ?
It _should_ work; but please try on a test VM and see what works and
what doesn't in your environment.
> pc59093:~ # rpm -qa|grep -iE 'libvirt|kvm'
> libvirt-cim-0.5.12-0.7.16
> libvirt-python-1.2.5-1.102
> libvirt-client-1.2.5-15.3
> kvm-1.4.2-47.1
> sles-kvm_en-pdf-11.4-0.33.1
> libvirt-1.2.5-15.3
-- 
/kashyap

----- On Feb 16, 2018, at 3:01 PM, Kashyap Chamarthy kchamart@redhat.com wrote:
> On Fri, Feb 16, 2018 at 01:59:01PM +0100, Lentes, Bernd wrote:
> 
> [...]
> 
>> Hi Kashyap,
>> 
>> thanks for your quick and detailed answers. Just to be complete.
>> The procedure in the above mentioned link does work with my old
software ?
> 
> It _should_ work; but please try on a test VM and see what works and
> what doesn't in your environment.

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.
Does this procedure also work with raw files ?

Bernd

 

Helmholtz Zentrum München

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