10:13 a.m.
From what I can tell, you can only backup a VM to an export domain if
the VM is shut down. Is a live VM backup not possible through oVirt? If
not, why not? Most other virtualization tools can handle this.
If it is possible, how do I do it through the backup API?
api.vms.myvm.export requires it to be shutdown so what would the
alternative be?
Thanks.
--
This email was Virus checked by UTM 9. For issues please contact the Windows Systems
Admin.
2:36 p.m.
--_002_D1C34669125B0soerenmalchowmconnet_
Content-Type: text/plain; charset="us-ascii"
Content-ID: <E0039E08D5007A4CBA3324A58133634A(a)liquidcampaign.com>
Content-Transfer-Encoding: quoted-printable
Dear Chris,
It is not true, you can snapshot a machine, then clone the snapshot and
export it for backup purposes after that you can remove the snapshot, all
on the live VM.
However, you need newer versions of libvirt to do that, right now we are
using CentOS 7.1 and the libvirt that comes with it is capable of doing
live merge which is necessary to achieve this.
But i have to warn you, we are experiencing a problem when removing the
snapshots (the part is commented in the attached script) it sometimes
kills virtual machines in a way that makes it necessary to put the
hypervisor to maintenance and then restart vdsmd and libvirtd before you
can start that VM again.
There is a bug filed already and it is in progress
https://bugzilla.redhat.com/show_bug.cgi?id=3D1231754
I also have to add that i newer version of libvirt (on Fedora 20 with the
libvirt preview repo) did not have that problem, so i am confident that
this will be solved soon.
Last but not least there is a plan to be able to export snapshots right
away for backup without having to clone them first, this is a huge step
forward for the backup procedure in terms of time that is needed and the
load on the storage and hypervisor systems.
I would really appreciate if you would help improving that script (we are
not python developers), i will see that i make this a github project or
something like that
Cheers
Soeren
On 08/07/15 17:13, "users-bounces(a)ovirt.org on behalf of Chris Jones -
BookIt.com Systems Administrator" <users-bounces(a)ovirt.org on behalf of
chris.jones(a)bookit.com> wrote:
From what I can tell, you can only backup a VM to an export domain
if
the VM is shut down. Is a live VM backup not possible through oVirt? If
not, why not? Most other virtualization tools can handle this.
If it is possible, how do I do it through the backup API?
api.vms.myvm.export requires it to be shutdown so what would the
alternative be?
Thanks.
--=20
This email was Virus checked by UTM 9. For issues please contact the
Windows Systems Admin.
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
--_002_D1C34669125B0soerenmalchowmconnet_
Content-Type: text/x-python-script; name="backup-queue.py"
Content-Description: backup-queue.py
Content-Disposition: attachment; filename="backup-queue.py"; size=5397;
creation-date="Wed, 08 Jul 2015 19:36:33 GMT";
modification-date="Wed, 08 Jul 2015 19:36:33 GMT"
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--_002_D1C34669125B0soerenmalchowmconnet_--
4:02 p.m.
This is a cryptographically signed message in MIME format.
--------------ms030600050407010304090606
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: quoted-printable
Hi Soeren,
thanks for sharing! I will look on this script right after upgrading to=20
7.1. It looks really useful.
cheers, Jiri
On 07/08/2015 09:36 PM, Soeren Malchow wrote:
Dear Chris,
It is not true, you can snapshot a machine, then clone the snapshot and=
export it for backup purposes after that you can remove the snapshot,
a=
ll
on the live VM.
However, you need newer versions of libvirt to do that, right now we ar=
e
using CentOS 7.1 and the libvirt that comes with it is capable of
doing=
live merge which is necessary to achieve this.
But i have to warn you, we are experiencing a problem when removing the=
snapshots (the part is commented in the attached script) it
sometimes
kills virtual machines in a way that makes it necessary to put the
hypervisor to maintenance and then restart vdsmd and libvirtd before yo=
u
can start that VM again.
There is a bug filed already and it is in progress
https://bugzilla.redhat.com/show_bug.cgi?id=3D1231754
I also have to add that i newer version of libvirt (on Fedora 20 with t=
he
libvirt preview repo) did not have that problem, so i am confident
that=
this will be solved soon.
Last but not least there is a plan to be able to export snapshots right=
away for backup without having to clone them first, this is a huge
step=
forward for the backup procedure in terms of time that is needed and
th=
e
load on the storage and hypervisor systems.
I would really appreciate if you would help improving that script (we a=
re
not python developers), i will see that i make this a github project
or=
something like that
Cheers
Soeren
On 08/07/15 17:13, "users-bounces(a)ovirt.org on behalf of Chris Jones -
BookIt.com Systems Administrator" <users-bounces(a)ovirt.org on behalf of=
chris.jones(a)bookit.com> wrote:
> From what I can tell, you can only backup a VM to an export domain if=
> the VM is shut down. Is a live VM backup not possible through
oVirt? I=
f
> not, why not? Most other virtualization tools can handle this.
>
> If it is possible, how do I do it through the backup API?
> api.vms.myvm.export requires it to be shutdown so what would the
> alternative be?
>
> Thanks.
>
> --
> This email was Virus checked by UTM 9. For issues please contact the
> Windows Systems Admin.
> _______________________________________________
> Users mailing list
> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
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--------------ms030600050407010304090606--
2:01 p.m.
Thanks, Soeren. I'll give it a look.
On 07/08/2015 03:36 PM, Soeren Malchow wrote:
Dear Chris,
It is not true, you can snapshot a machine, then clone the snapshot and
export it for backup purposes after that you can remove the snapshot, all
on the live VM.
However, you need newer versions of libvirt to do that, right now we are
using CentOS 7.1 and the libvirt that comes with it is capable of doing
live merge which is necessary to achieve this.
But i have to warn you, we are experiencing a problem when removing the
snapshots (the part is commented in the attached script) it sometimes
kills virtual machines in a way that makes it necessary to put the
hypervisor to maintenance and then restart vdsmd and libvirtd before you
can start that VM again.
There is a bug filed already and it is in progress
https://bugzilla.redhat.com/show_bug.cgi?id=1231754
I also have to add that i newer version of libvirt (on Fedora 20 with the
libvirt preview repo) did not have that problem, so i am confident that
this will be solved soon.
Last but not least there is a plan to be able to export snapshots right
away for backup without having to clone them first, this is a huge step
forward for the backup procedure in terms of time that is needed and the
load on the storage and hypervisor systems.
I would really appreciate if you would help improving that script (we are
not python developers), i will see that i make this a github project or
something like that
Cheers
Soeren
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3 comments
3 participants
participants (3)
-
Chris Jones - BookIt.com Systems Administrator -
Jiří Sléžka -
Soeren Malchow