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--_000_196AB7D9F4C2F943BFC199940DF21D79016557467A0CKITMSX07kit_--
7:51 p.m.
Hi,
For the live-backup, i think you can make a live snapshot of the vm, and
then clone a new vm from that snapshot, after that you can do export.
2014-11-27 23:12 GMT+08:00 Keppler, Thomas (PEBA) <thomas.keppler(a)kit.edu>:
Hello,
now that our oVirt Cluster runs great, I'd like to know if anybody has
done a backup solution for oVirt before.
My basic idea goes as follows:
- Create a JSON file with machine's preferences for later restore, create
a snapshot, snatch the disk by its disk-id (copy it to the fileserver),
then deleting the snapshot and be done with it.
- On restore I'd just create a new VM with the Disks and NICs specified in
the preferences; then I'd go ahead and and put back the disk... t
I've played a little bit around with building a JSON file and so far it
works great; I haven't tried to make a VM with that, though...
Using the export domain or a simple export command is not what I want
since you'd have to turn off the machine to do that - AFAIK. Correct me if
that should not be true.
Now, before I go into any more hassle, has somebody else of you done a
live-backup solution for oVirt? Are there any recommendations? Thanks for
any help provided!
Best regards
Thomas Keppler
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
1:49 a.m.
Hi Thomas/plysan
oVirt has the Backup/Restore api designated to provide the capabilities to backup/restore
a vm.
see here:
http://www.ovirt.org/Features/Backup-Restore_API_Integration
----- Original Message -----
From: "plysan" <plysab(a)gmail.com>
To: "Thomas Keppler (PEBA)" <thomas.keppler(a)kit.edu>
Cc: users(a)ovirt.org
Sent: Thursday, December 4, 2014 3:51:24 AM
Subject: Re: [ovirt-users] Backup solution using the API
Hi,
For the live-backup, i think you can make a live snapshot of the vm, and then
clone a new vm from that snapshot, after that you can do export.
2014-11-27 23:12 GMT+08:00 Keppler, Thomas (PEBA) < thomas.keppler(a)kit.edu >
:
Hello,
now that our oVirt Cluster runs great, I'd like to know if anybody has done a
backup solution for oVirt before.
My basic idea goes as follows:
- Create a JSON file with machine's preferences for later restore, create a
snapshot, snatch the disk by its disk-id (copy it to the fileserver), then
deleting the snapshot and be done with it.
- On restore I'd just create a new VM with the Disks and NICs specified in
the preferences; then I'd go ahead and and put back the disk... t
I've played a little bit around with building a JSON file and so far it works
great; I haven't tried to make a VM with that, though...
Using the export domain or a simple export command is not what I want since
you'd have to turn off the machine to do that - AFAIK. Correct me if that
should not be true.
Now, before I go into any more hassle, has somebody else of you done a
live-backup solution for oVirt? Are there any recommendations? Thanks for
any help provided!
Best regards
Thomas Keppler
_______________________________________________
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
12:06 p.m.
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--------------080407050206010406010603
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On 11/27/2014 9:12 AM, Keppler, Thomas (PEBA) wrote:
Now, before I go into any more hassle, has somebody else of you done a
live-backup solution for oVirt? Are there any recommendations? Thanks
for any help provided!
I've been looking for a similar scheme for the last year. It was not
(really) possible in the past as there wasn't any way to destroy a
snapshot w/o shutting down the VM. Is this still the case, or are snap
shots fully implemented now?
Basically, I'd like to:
Tell VM to flush it's buffers
suspend VM
take snap shot of boot virtual disk
resume VM
backup the virtual boot disk from the Hypervisor using standard commands
(tar, cp, whatever)
destroy the snapshot
This would at least give some BMR capabilities of your VMs.
Ideally, I'd also like to be able to create a snapshot from within the
VM, do a yum update, see if I like it or not, if I do, then destroy the
snap shot. If I don't, I want to promote the snapshot and boot from
that, then destroy the "original".
(Yes, I know, BTRFS is supposed to be the solution to this with in the
VM at some point, isn't it?)
I have looked at the oVirt backup API wiki, but the code examples look
more like pseudo code than real world examples.
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<div class="moz-cite-prefix">On 11/27/2014 9:12 AM, Keppler, Thomas
(PEBA) wrote:<br>
</div>
<blockquote
cite="mid:196AB7D9F4C2F943BFC199940DF21D79016557467A0C@KIT-MSX-07.kit.edu"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
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<br>
Now, before I go into any more hassle, has somebody else of you
done a live-backup solution for oVirt? Are there any
recommendations? Thanks for any help provided!<br>
<br>
</blockquote>
<br>
I've been looking for a similar scheme for the last year. It was
not (really) possible in the past as there wasn't any way to destroy
a snapshot w/o shutting down the VM. Is this still the case, or
are snap shots fully implemented now?<br>
<br>
Basically, I'd like to:<br>
Tell VM to flush it's buffers<br>
suspend VM<br>
take snap shot of boot virtual disk<br>
resume VM<br>
backup the virtual boot disk from the Hypervisor using standard
commands (tar, cp, whatever)<br>
destroy the snapshot<br>
<br>
This would at least give some BMR capabilities of your VMs.<br>
<br>
Ideally, I'd also like to be able to create a snapshot from within
the VM, do a yum update, see if I like it or not, if I do, then
destroy the snap shot. If I don't, I want to promote the snapshot
and boot from that, then destroy the "original".<br>
(Yes, I know, BTRFS is supposed to be the solution to this with in
the VM at some point, isn't it?)<br>
<br>
I have looked at the oVirt backup API wiki, but the code examples
look more like pseudo code than real world examples.<br>
<br>
</body>
</html>
--------------080407050206010406010603--
7:28 a.m.
On 12/10/2014 01:06 PM, Blaster wrote:
On 11/27/2014 9:12 AM, Keppler, Thomas (PEBA) wrote:
>
> Now, before I go into any more hassle, has somebody else of you done a
> live-backup solution for oVirt? Are there any recommendations? Thanks
> for any help provided!
>
I've been looking for a similar scheme for the last year. It was not
(really) possible in the past as there wasn't any way to destroy a
snapshot w/o shutting down the VM. Is this still the case, or are snap
shots fully implemented now?
Basically, I'd like to:
Tell VM to flush it's buffers
suspend VM
take snap shot of boot virtual disk
resume VM
backup the virtual boot disk from the Hypervisor using standard commands
(tar, cp, whatever)
destroy the snapshot
This would at least give some BMR capabilities of your VMs.
Ideally, I'd also like to be able to create a snapshot from within the
VM, do a yum update, see if I like it or not, if I do, then destroy the
snap shot. If I don't, I want to promote the snapshot and boot from
that, then destroy the "original".
(Yes, I know, BTRFS is supposed to be the solution to this with in the
VM at some point, isn't it?)
I have looked at the oVirt backup API wiki, but the code examples look
more like pseudo code than real world examples.
that's "live merge". its in 3.5, but pending rhel/centos 7.1 (and
accompanying 3.5.z patches around for bugs found during testing with
that upcoming release)
3:31 a.m.
----- Original Message -----
From: "Blaster" <Blaster(a)556nato.com>
To: "Thomas Keppler (PEBA)" <thomas.keppler(a)kit.edu>, users(a)ovirt.org
Sent: Wednesday, December 10, 2014 8:06:58 PM
Subject: Re: [ovirt-users] Backup solution using the API
On 11/27/2014 9:12 AM, Keppler, Thomas (PEBA) wrote:
Now, before I go into any more hassle, has somebody else of you done a
live-backup solution for oVirt? Are there any recommendations? Thanks for
any help provided!
I've been looking for a similar scheme for the last year. It was not (really)
possible in the past as there wasn't any way to destroy a snapshot w/o
shutting down the VM. Is this still the case, or are snap shots fully
implemented now?
Basically, I'd like to:
Tell VM to flush it's buffers
suspend VM
take snap shot of boot virtual disk
resume VM
You don't need to suspend the vm, qemu can create live snapshot. When the
snapshot is done, you don't care about future io, it will simply not
included in the backup.
backup the virtual boot disk from the Hypervisor using standard
commands
(tar, cp, whatever)
You can by attaching the snapshot to another vm
destroy the snapshot
You can in ovirt 3.5.1 - we do not depend any more on future libvirt features.
Adam, can you confirm?
This would at least give some BMR capabilities of your VMs.
Ideally, I'd also like to be able to create a snapshot from within the VM, do
You can do this "within" the vm by using the engine REST API. But this can
be fragile - for example, if the vm pauses, your backup tool within the vm
will never complete :-)
a yum update, see if I like it or not, if I do, then destroy the snap
shot.
Possible in 3.5.1 using REST API
If I don't, I want to promote the snapshot and boot from that,
then destroy
the "original".
Same
Nir
10:04 a.m.
On 15/12/14 04:31 -0500, Nir Soffer wrote:
----- Original Message -----
> From: "Blaster" <Blaster(a)556nato.com>
> To: "Thomas Keppler (PEBA)" <thomas.keppler(a)kit.edu>,
users(a)ovirt.org
> Sent: Wednesday, December 10, 2014 8:06:58 PM
> Subject: Re: [ovirt-users] Backup solution using the API
>
> On 11/27/2014 9:12 AM, Keppler, Thomas (PEBA) wrote:
>
>
>
> Now, before I go into any more hassle, has somebody else of you done a
> live-backup solution for oVirt? Are there any recommendations? Thanks for
> any help provided!
>
>
> I've been looking for a similar scheme for the last year. It was not (really)
> possible in the past as there wasn't any way to destroy a snapshot w/o
> shutting down the VM. Is this still the case, or are snap shots fully
> implemented now?
>
> Basically, I'd like to:
> Tell VM to flush it's buffers
> suspend VM
> take snap shot of boot virtual disk
> resume VM
You don't need to suspend the vm, qemu can create live snapshot. When the
snapshot is done, you don't care about future io, it will simply not
included in the backup.
> backup the virtual boot disk from the Hypervisor using standard commands
> (tar, cp, whatever)
You can by attaching the snapshot to another vm
> destroy the snapshot
You can in ovirt 3.5.1 - we do not depend any more on future libvirt features.
Adam, can you confirm?
Yes, on 3.5.1 you'll be able to destroy the snapshot without impacting
the running VM.
>
> This would at least give some BMR capabilities of your VMs.
>
> Ideally, I'd also like to be able to create a snapshot from within the VM, do
You can do this "within" the vm by using the engine REST API. But this can
be fragile - for example, if the vm pauses, your backup tool within the vm
will never complete :-)
> a yum update, see if I like it or not, if I do, then destroy the snap shot.
Possible in 3.5.1 using REST API
> If I don't, I want to promote the snapshot and boot from that, then destroy
> the "original".
Same
Nir
--
Adam Litke
11:30 a.m.
Dear all,
i am a little lost, i tried quite a few things with the snapshots, so far with python
scripts I can iterate through the existing machines, take one, make a snapshot and all
this.
However, there are 2 problems I can not get around:
1. even when on 3.5.1 I can not delete a snapshot on a running VM, if I understood that
correctly this relies on the Live Merge Feature where the code is available in vdsm
already but it needs a certain libvirt version !?!?
So question here is, can I delete a snapshot or not ? can I use only the rest API not
python (excuse me I am not a developer)
2. when I attach a snapshot to another virtual machine, how do I do the backup then ? Does
anybody have this already ?
The environment is running on CentOS 7 (hypervisors), Centos 6 (hosted engine), the ovirt
is on version 3.5.1, also we use gluster as a storage backend where the gluster servers
are managed within the hosted engine in a separate cluster exporting the storage only.
Regards
Soeren
-----Original Message-----
From: users-bounces(a)ovirt.org [mailto:users-bounces@ovirt.org] On Behalf Of Adam Litke
Sent: Tuesday, January 6, 2015 5:04 PM
To: Nir Soffer
Cc: Thomas Keppler (PEBA); users(a)ovirt.org
Subject: Re: [ovirt-users] Backup solution using the API
On 15/12/14 04:31 -0500, Nir Soffer wrote:
----- Original Message -----
> From: "Blaster" <Blaster(a)556nato.com>
> To: "Thomas Keppler (PEBA)" <thomas.keppler(a)kit.edu>,
users(a)ovirt.org
> Sent: Wednesday, December 10, 2014 8:06:58 PM
> Subject: Re: [ovirt-users] Backup solution using the API
>
> On 11/27/2014 9:12 AM, Keppler, Thomas (PEBA) wrote:
>
>
>
> Now, before I go into any more hassle, has somebody else of you done
> a live-backup solution for oVirt? Are there any recommendations?
> Thanks for any help provided!
>
>
> I've been looking for a similar scheme for the last year. It was not
> (really) possible in the past as there wasn't any way to destroy a
> snapshot w/o shutting down the VM. Is this still the case, or are
> snap shots fully implemented now?
>
> Basically, I'd like to:
> Tell VM to flush it's buffers
> suspend VM
> take snap shot of boot virtual disk
> resume VM
You don't need to suspend the vm, qemu can create live snapshot. When
the snapshot is done, you don't care about future io, it will simply
not included in the backup.
> backup the virtual boot disk from the Hypervisor using standard
> commands (tar, cp, whatever)
You can by attaching the snapshot to another vm
> destroy the snapshot
You can in ovirt 3.5.1 - we do not depend any more on future libvirt features.
Adam, can you confirm?
Yes, on 3.5.1 you'll be able to destroy the snapshot without impacting the running
VM.
>
> This would at least give some BMR capabilities of your VMs.
>
> Ideally, I'd also like to be able to create a snapshot from within
> the VM, do
You can do this "within" the vm by using the engine REST API. But this
can be fragile - for example, if the vm pauses, your backup tool within
the vm will never complete :-)
> a yum update, see if I like it or not, if I do, then destroy the snap shot.
Possible in 3.5.1 using REST API
> If I don't, I want to promote the snapshot and boot from that, then
> destroy the "original".
Same
Nir
--
Adam Litke
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
12:09 p.m.
On 11/02/15 17:30 +0000, Soeren Malchow wrote:
Dear all,
i am a little lost, i tried quite a few things with the snapshots, so
far with python scripts I can iterate through the existing machines,
take one, make a snapshot and all this.
However, there are 2 problems I can not get around:
1. even when on 3.5.1 I can not delete a snapshot on a running VM, if
I understood that correctly this relies on the Live Merge Feature
where the code is available in vdsm already but it needs a certain
libvirt version !?!? So question here is, can I delete a snapshot or
not ? can I use only the rest API not python (excuse me I am not a
developer)
I can answer this one at least. For now, Centos 7 is lacking a new
enough version of libvirt to support Live Merge (> 1.2.7). The
virt-preview repository for Fedora is shipping a newer libvirt. You
can check if vdsm will support live merge by executing the following
on the host in question:
sudo vdsClient -s 0 getVdsCaps | grep liveMerge
RHEL 7.1 will be shipping a version with the neccessary backports to
support live merge so I imagine Centos 7.1 will pick those up
automatically?
--
Adam Litke
3:23 p.m.
Il 11/Feb/2015 19:10 "Adam Litke" <alitke(a)redhat.com> ha scritto:
On 11/02/15 17:30 +0000, Soeren Malchow wrote:
>
> Dear all,
>
> i am a little lost, i tried quite a few things with the snapshots, so
> far with python scripts I can iterate through the existing machines,
> take one, make a snapshot and all this.
>
> However, there are 2 problems I can not get around:
>
> 1. even when on 3.5.1 I can not delete a snapshot on a running VM, if
> I understood that correctly this relies on the Live Merge Feature
> where the code is available in vdsm already but it needs a certain
> libvirt version !?!? So question here is, can I delete a snapshot or
> not ? can I use only the rest API not python (excuse me I am not a
> developer)
I can answer this one at least. For now, Centos 7 is lacking a new
enough version of libvirt to support Live Merge (> 1.2.7). The
virt-preview repository for Fedora is shipping a newer libvirt. You
can check if vdsm will support live merge by executing the following
on the host in question:
sudo vdsClient -s 0 getVdsCaps | grep liveMerge
RHEL 7.1 will be shipping a version with the neccessary backports to
support live merge so I imagine Centos 7.1 will pick those up
automatically?
--
Adam Litke
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
I confirm that at least on f21 tc3 I was able to live delete snapshots,
also into the active layer.
See:
http://lists.ovirt.org/pipermail/users/2014-November/029450.html
and the whole thread.
I hope that RHEL 7.1 (and CentOS) will have the merging into the active
layer too.... and not only into the chain history.
Gianluca
8:37 p.m.
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--_000_687766E0007010429FBFF98CA708248887423Fmcexch01mcongroup_--
9:01 p.m.
----- Soeren Malchow <soeren.malchow(a)mcon.net> wrote:
Dear all,
thank you for the help, right now we are at a state where we can do snapshots and remove
them, since there are no ovirt packages for Fedora 21 we are using fedora 20 +
virt-preview.
Everything is working fine from a spanshot perspective.
Excellent. Glad to hear it!
Regards
Soeren
From: Gianluca Cecchi [mailto:gianluca.cecchi@gmail.com]
Sent: Wednesday, February 11, 2015 10:23 PM
To: Adam Litke
Cc: users; Soeren Malchow; Thomas Keppler (PEBA)
Subject: Re: [ovirt-users] Backup solution using the API
Il 11/Feb/2015 19:10 "Adam Litke"
<alitke@redhat.com<mailto:alitke@redhat.com>> ha scritto:
>
> On 11/02/15 17:30 +0000, Soeren Malchow wrote:
>>
>> Dear all,
>>
>> i am a little lost, i tried quite a few things with the snapshots, so
>> far with python scripts I can iterate through the existing machines,
>> take one, make a snapshot and all this.
>>
>> However, there are 2 problems I can not get around:
>>
>> 1. even when on 3.5.1 I can not delete a snapshot on a running VM, if
>> I understood that correctly this relies on the Live Merge Feature
>> where the code is available in vdsm already but it needs a certain
>> libvirt version !?!? So question here is, can I delete a snapshot or
>> not ? can I use only the rest API not python (excuse me I am not a
>> developer)
>
>
> I can answer this one at least. For now, Centos 7 is lacking a new
> enough version of libvirt to support Live Merge (> 1.2.7). The
> virt-preview repository for Fedora is shipping a newer libvirt. You
> can check if vdsm will support live merge by executing the following
> on the host in question:
>
> sudo vdsClient -s 0 getVdsCaps | grep liveMerge
>
> RHEL 7.1 will be shipping a version with the neccessary backports to
> support live merge so I imagine Centos 7.1 will pick those up
> automatically?
>
>
> --
> Adam Litke
> _______________________________________________
> Users mailing list
> Users@ovirt.org<mailto:Users@ovirt.org>
> http://lists.ovirt.org/mailman/listinfo/users
I confirm that at least on f21 tc3 I was able to live delete snapshots, also into the
active layer.
See:
http://lists.ovirt.org/pipermail/users/2014-November/029450.html
and the whole thread.
I hope that RHEL 7.1 (and CentOS) will have the merging into the active layer too.... and
not only into the chain history.
Gianluca
3:15 a.m.
----- Original Message -----
From: "Soeren Malchow" <soeren.malchow(a)mcon.net>
To: "Adam Litke" <alitke(a)redhat.com>, "Nir Soffer"
<nsoffer(a)redhat.com>
Cc: "Thomas Keppler (PEBA)" <thomas.keppler(a)kit.edu>, users(a)ovirt.org
Sent: Wednesday, February 11, 2015 7:30:48 PM
Subject: Re: [ovirt-users] Backup solution using the API
Dear all,
i am a little lost, i tried quite a few things with the snapshots, so far
with python scripts I can iterate through the existing machines, take one,
make a snapshot and all this.
However, there are 2 problems I can not get around:
1. even when on 3.5.1 I can not delete a snapshot on a running VM, if I
understood that correctly this relies on the Live Merge Feature where the
code is available in vdsm already but it needs a certain libvirt version
!?!?
So question here is, can I delete a snapshot or not ? can I use only the rest
API not python (excuse me I am not a developer)
2. when I attach a snapshot to another virtual machine, how do I do the
backup then ? Does anybody have this already ?
Hi Soeren,
you can find detailed example for Backup/Restore flows here -
http://www.ovirt.org/Features/Backup-Restore_API_Integration
thanks,
laravot.
The environment is running on CentOS 7 (hypervisors), Centos 6 (hosted
engine), the ovirt is on version 3.5.1, also we use gluster as a storage
backend where the gluster servers are managed within the hosted engine in a
separate cluster exporting the storage only.
Regards
Soeren
-----Original Message-----
From: users-bounces(a)ovirt.org [mailto:users-bounces@ovirt.org] On Behalf Of
Adam Litke
Sent: Tuesday, January 6, 2015 5:04 PM
To: Nir Soffer
Cc: Thomas Keppler (PEBA); users(a)ovirt.org
Subject: Re: [ovirt-users] Backup solution using the API
On 15/12/14 04:31 -0500, Nir Soffer wrote:
>----- Original Message -----
>> From: "Blaster" <Blaster(a)556nato.com>
>> To: "Thomas Keppler (PEBA)" <thomas.keppler(a)kit.edu>,
users(a)ovirt.org
>> Sent: Wednesday, December 10, 2014 8:06:58 PM
>> Subject: Re: [ovirt-users] Backup solution using the API
>>
>> On 11/27/2014 9:12 AM, Keppler, Thomas (PEBA) wrote:
>>
>>
>>
>> Now, before I go into any more hassle, has somebody else of you done
>> a live-backup solution for oVirt? Are there any recommendations?
>> Thanks for any help provided!
>>
>>
>> I've been looking for a similar scheme for the last year. It was not
>> (really) possible in the past as there wasn't any way to destroy a
>> snapshot w/o shutting down the VM. Is this still the case, or are
>> snap shots fully implemented now?
>>
>> Basically, I'd like to:
>> Tell VM to flush it's buffers
>> suspend VM
>> take snap shot of boot virtual disk
>> resume VM
>
>You don't need to suspend the vm, qemu can create live snapshot. When
>the snapshot is done, you don't care about future io, it will simply
>not included in the backup.
>
>> backup the virtual boot disk from the Hypervisor using standard
>> commands (tar, cp, whatever)
>
>You can by attaching the snapshot to another vm
>
>> destroy the snapshot
>
>You can in ovirt 3.5.1 - we do not depend any more on future libvirt
>features.
>Adam, can you confirm?
Yes, on 3.5.1 you'll be able to destroy the snapshot without impacting the
running VM.
>>
>> This would at least give some BMR capabilities of your VMs.
>>
>> Ideally, I'd also like to be able to create a snapshot from within
>> the VM, do
>
>You can do this "within" the vm by using the engine REST API. But this
>can be fragile - for example, if the vm pauses, your backup tool within
>the vm will never complete :-)
>
>> a yum update, see if I like it or not, if I do, then destroy the snap
>> shot.
>
>Possible in 3.5.1 using REST API
>
>> If I don't, I want to promote the snapshot and boot from that, then
>> destroy the "original".
>
>Same
>
>Nir
--
Adam Litke
_______________________________________________
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
6:44 a.m.
Dear Liron,
thanks alot, i know, i was following that, however the Live Merge Feature was missing in
CentOS 7, that was already the discussion.
Now on Fedora 20 the Live Merge works (we have to stick to Fedora then until this is in
CentOS 7.1 ?! )
I am experimenting with scripts to iterate through all machines and do a backup for all
machines on a separate VM, I will let you know how that goes
Cheers
Soeren
-----Original Message-----
From: Liron Aravot [mailto:laravot@redhat.com]
Sent: Monday, February 16, 2015 10:15 AM
To: Soeren Malchow
Cc: Adam Litke; Nir Soffer; Thomas Keppler (PEBA); users(a)ovirt.org
Subject: Re: [ovirt-users] Backup solution using the API
----- Original Message -----
From: "Soeren Malchow" <soeren.malchow(a)mcon.net>
To: "Adam Litke" <alitke(a)redhat.com>, "Nir Soffer"
<nsoffer(a)redhat.com>
Cc: "Thomas Keppler (PEBA)" <thomas.keppler(a)kit.edu>, users(a)ovirt.org
Sent: Wednesday, February 11, 2015 7:30:48 PM
Subject: Re: [ovirt-users] Backup solution using the API
Dear all,
i am a little lost, i tried quite a few things with the snapshots, so
far with python scripts I can iterate through the existing machines,
take one, make a snapshot and all this.
However, there are 2 problems I can not get around:
1. even when on 3.5.1 I can not delete a snapshot on a running VM, if
I understood that correctly this relies on the Live Merge Feature
where the code is available in vdsm already but it needs a certain
libvirt version !?!?
So question here is, can I delete a snapshot or not ? can I use only
the rest API not python (excuse me I am not a developer)
2. when I attach a snapshot to another virtual machine, how do I do
the backup then ? Does anybody have this already ?
Hi Soeren,
you can find detailed example for Backup/Restore flows here -
http://www.ovirt.org/Features/Backup-Restore_API_Integration
thanks,
laravot.
The environment is running on CentOS 7 (hypervisors), Centos 6 (hosted
engine), the ovirt is on version 3.5.1, also we use gluster as a
storage backend where the gluster servers are managed within the
hosted engine in a separate cluster exporting the storage only.
Regards
Soeren
-----Original Message-----
From: users-bounces(a)ovirt.org [mailto:users-bounces@ovirt.org] On
Behalf Of Adam Litke
Sent: Tuesday, January 6, 2015 5:04 PM
To: Nir Soffer
Cc: Thomas Keppler (PEBA); users(a)ovirt.org
Subject: Re: [ovirt-users] Backup solution using the API
On 15/12/14 04:31 -0500, Nir Soffer wrote:
>----- Original Message -----
>> From: "Blaster" <Blaster(a)556nato.com>
>> To: "Thomas Keppler (PEBA)" <thomas.keppler(a)kit.edu>,
>> users(a)ovirt.org
>> Sent: Wednesday, December 10, 2014 8:06:58 PM
>> Subject: Re: [ovirt-users] Backup solution using the API
>>
>> On 11/27/2014 9:12 AM, Keppler, Thomas (PEBA) wrote:
>>
>>
>>
>> Now, before I go into any more hassle, has somebody else of you
>> done a live-backup solution for oVirt? Are there any recommendations?
>> Thanks for any help provided!
>>
>>
>> I've been looking for a similar scheme for the last year. It was
>> not
>> (really) possible in the past as there wasn't any way to destroy a
>> snapshot w/o shutting down the VM. Is this still the case, or are
>> snap shots fully implemented now?
>>
>> Basically, I'd like to:
>> Tell VM to flush it's buffers
>> suspend VM
>> take snap shot of boot virtual disk resume VM
>
>You don't need to suspend the vm, qemu can create live snapshot. When
>the snapshot is done, you don't care about future io, it will simply
>not included in the backup.
>
>> backup the virtual boot disk from the Hypervisor using standard
>> commands (tar, cp, whatever)
>
>You can by attaching the snapshot to another vm
>
>> destroy the snapshot
>
>You can in ovirt 3.5.1 - we do not depend any more on future libvirt
>features.
>Adam, can you confirm?
Yes, on 3.5.1 you'll be able to destroy the snapshot without impacting
the running VM.
>>
>> This would at least give some BMR capabilities of your VMs.
>>
>> Ideally, I'd also like to be able to create a snapshot from within
>> the VM, do
>
>You can do this "within" the vm by using the engine REST API. But
>this can be fragile - for example, if the vm pauses, your backup tool
>within the vm will never complete :-)
>
>> a yum update, see if I like it or not, if I do, then destroy the
>> snap shot.
>
>Possible in 3.5.1 using REST API
>
>> If I don't, I want to promote the snapshot and boot from that, then
>> destroy the "original".
>
>Same
>
>Nir
--
Adam Litke
_______________________________________________
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
3355
days inactive
3436
days old
13 comments
9 participants
participants (9)
-
Adam Litke -
Blaster -
Gianluca Cecchi -
Itamar Heim -
Keppler, Thomas (PEBA) -
Liron Aravot -
Nir Soffer -
plysan -
Soeren Malchow