Displaying 20 results from an estimated 40000 matches similar to: "Snapshot system: really confusing."
2011 Sep 27
2
Snapshot Error
Hey
When I want to take a snapshot for a Domain by using
virDomainSnapshotCreateXML. The Error as below happen:
libvir: QEMU error : Requested operation is not valid: Disk
'/var/lib/libvirt/images/fedora-qcow.qcow2' does not support snapshotting
The snapshot Configuration is :
<domainsnapshot>
<description>Snapshot of OS install and updates</description>
2015 May 28
2
Re: Concurrent scanning of same disk
2015-05-28 10:40 GMT+03:00 Richard W.M. Jones <rjones@redhat.com>:
> On Thu, May 28, 2015 at 10:33:48AM +0300, NoxDaFox wrote:
> > To create the snapshots I'm using the libvirt command snapshotCreateXML
> > with no flag set. Does libvirt support consistent snapshotting or shall I
> > rely on QEMU backup new feature only?
>
> According to:
2013 Dec 04
2
Re: Virsh snapshots
Thanks for your answer,
I am trying to make a snapshot of whole virtual machine (disk, CPU
state, memory). But I need to make this snapshot in matter of seconds.
I have already try to create snapshot of disk, which is not problem. I
use qcow2 format, and create new disk image using original disk image as
backing file. But still I am not able to assign state of vm with new disk.
I have found
2012 May 29
1
how to store an internal disk snapshot by use
Hello everyone,
I am trying to find a way to store an internal disk snapshot and
supposed to restore later.
Here is the problems I met:
1) when I use SnapshotCreateXML() to create a disk_only snapshot while
the domain is inactive, there is an error happened:
disk snapshot of inactive domains not implemented yet.
I am wondering is there and way I can save the disk_only
2015 May 28
2
Re: Concurrent scanning of same disk
2015-05-28 10:10 GMT+03:00 Richard W.M. Jones <rjones@redhat.com>:
> On Thu, May 28, 2015 at 09:48:41AM +0300, NoxDaFox wrote:
> > 2015-05-27 15:21 GMT+03:00 Richard W.M. Jones <rjones@redhat.com>:
> >
> > > On Wed, May 27, 2015 at 09:38:38AM +0300, NoxDaFox wrote:
> > > > * RuntimeError: file receive cancelled by daemon - On r =
> > >
2014 Apr 10
2
Re: Help with understanding and solving snapshot problem
Hello
Thanks heaps for your suggestions. responses inline.
On 10 Apr 2014, at 10:34 pm, Eric Blake <eblake@rehost1hat.com> wrote:
>
> [ … ]
> [Can you convince your mailer to wrap long lines? It makes it easier
> for other readers]
I’ll try and keep the lines short. I don’t see any obvious setting to change the wrap.
>>
>> Using RHEL 6.4 and libvirt version
2014 Oct 14
3
drive-backup command permission denied.. and need some clarification
Hi
* Trying to get drive-backup command, getting permission denied. :(
sudo virsh qemu-monitor-command --hmp my-instance --cmd
drive_backup drive-virtio-disk0 /tmp/foo.vda.img
Looks like apparmor issue. What can I modify to make this work ?
* Couple of other questions
drive-backup :
* The doc seems to claim that it gives a point in time copy
of
2019 Jul 03
1
libvirt-python Create External Snapshot
Hi Libvirt,
Does libvirt-python currently support the creation of external snapshots?
I ran
domain.snapshotCreateXML(xml)
where xml is
<domainsnapshot>
<name>snap1</name>
<description>Snapshot of OS install and updates</description>
<disks>
<disk name='vda'>
<source
2014 Oct 15
2
Re: drive-backup command permission denied.. and need some clarification
On Tue, Oct 14, 2014 at 02:08:41PM -0600, Eric Blake wrote:
> On 10/14/2014 11:52 AM, Jd wrote:
> > Hi
> >
> > * Trying to get drive-backup command, getting permission denied. :(
> >
> > sudo virsh qemu-monitor-command --hmp my-instance --cmd
> > drive_backup drive-virtio-disk0 /tmp/foo.vda.img
>
> Ouch. qemu-monitor-command is explicitly
2014 May 19
1
Cloning of Running Domain
Hello,
I have a running transient domain with a storage volume that utilizes a
backing file (both QCOW2 format).
I'd like to capture the disk and memory state of the domain preferably to
external file(s) (which I understand is an 'external checkpoint'), so that
other independent domains can be instantiated and effectively "resumed"
from this point-in-time profile.
My
2014 Jul 10
1
snapshot-create error
Hi,
What's the difference between QEMU snapshot and libvirt snapshot?
# qemu-img create -f qcow2 disk.img 512
Formatting 'disk.img', fmt=qcow2 size=512 encryption=off cluster_size=65536 lazy_refcounts=off
# qemu-img info disk.img
image: disk.img
file format: qcow2
virtual size: 512 (512 bytes)
disk size: 136K
cluster_size: 65536
Format specific information:
compat: 1.1
lazy
2014 Aug 06
2
Re: [libvirt] libvirt external disk-only snapshot will pause the VM?
On Wed, Aug 6, 2014 at 12:27 PM, Eric Blake <eblake@redhat.com> wrote:
> On 08/06/2014 10:06 AM, Yuanzhen Gu wrote:
> > yes, I got your point, thanks very much Eric.
>
> not entirely, because you still top-posted.
>
> got it entirely this time, not top-posted.
> >
> > If I want to take a distributed snapshot, which need pause all the VMs
> and
>
2014 Aug 06
2
Re: [libvirt] libvirt external disk-only snapshot will pause the VM?
yes, I got your point, thanks very much Eric.
If I want to take a distributed snapshot, which need pause all the VMs and
then take snapshot, how can I control the pause for all the VMs?
Is there only way that I turn to freeze/thaw functions?
and freeze/thaw only for file systems, not for the whole guest, am I right?
Thanks a lot!
Best,
Yuanzhen
On Wed, Aug 6, 2014 at 11:35 AM, Eric Blake
2014 Jul 02
7
virsh blockcopy: doesn't seem to flatten the chain by default
Versions
--------
(Libvirt locally built from a recent git commit -ec7b922):
$ rpm -q libvirt-daemon-kvm qemu-system-x86
libvirt-daemon-kvm-1.2.6-1.fc20.x86_64
qemu-system-x86-2.0.0-1.fc21.x86_64
Test
----
[All images are qcow2 files.]
We have this simple chain:
base <- snap1
Let's quickly examine the contents of 'base' and 'snap1' images:
2011 Sep 22
1
Hot cloning & P2V
Hi all,
I guess my question is stupid and has been asked a thousand times but i was
wondering if it's possible to do the following things:
- Cloning of a running virtual machine (hot copy)
- Migrate a physical server to a virtual one.
I googled a bit and am not able to find the answers.
Thanks.
Regards,
Sam
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2014 May 23
2
Re: Live snapshots of a single block device
----- Original Message -----
> From: "Eric Blake" <eblake@redhat.com> To: "Andrew Martin"
> <amartin@xes-inc.com>, libvirt-users@redhat.com Sent: Thursday, May 22, 2014
> 5:44:54 PM Subject: Re: [libvirt-users] Live snapshots of a single block
> device
>
> On 05/22/2014 04:31 PM, Andrew Martin wrote:
> > Hello,
> >
>
> [Can you
2012 Jun 06
2
The default location of vm snapshots
Hi all,
Where could I find the memory dump and disk snapshots for vm after command "virsh snapshot-create <some_running_vm>"? Thanks in advance.
I found the xml files in /var/lib/libvirt/qemu/snapshot/, but hava no idea about the raw snapshot file.
Thanks,
Lei
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2015 Dec 03
3
Re: snapshot of running vm's
> -----Oorspronkelijk bericht-----
> Van: Lentes, Bernd [mailto:bernd.lentes@helmholtz-muenchen.de]
> Verzonden: donderdag 3 december 2015 13:54
> Aan: libvirt-ML
> CC: Dominique Ramaekers
> Onderwerp: RE: snapshot of running vm's
>
> > ...
> > >
> > > Hi,
> > >
> > > i have inserted:
> > >
> > > <channel
2013 Dec 02
2
Virsh snapshots
Hello,
I am working on my PhD thesis and it would be really helpfull if someone
could advise me, whether can Virsh create snapshots of VMs using
copy-on-write.
Thanks for reply.
Juraj
2013 Oct 02
2
Snapshots: Where they are stored and how to use them?
Firstly I'd like to learn where a snapshot is stored once it has been
made. I understand that the principle is that when changes occur in
the VM, the difference is written to the snapshot, thus recording the
differences between the date/time of the snapshot and the current
value of the VM. Is that a correct assessment of the process?
If that is indeed so, can I take regular snapshots and