Displaying 20 results from an estimated 43 matches for "domainsnapshot".
2014 May 22
2
Live snapshots of a single block device
...only --atomic --no-metadata --diskspec "vda"
I run this command for each block device (e.g vda, vdb, etc). However, after running the above command (to only backup vda), I see that a snapshot has also been created for vdb. I tried running it with --print-xml, which gives this output:
<domainsnapshot>
<name>05-22-14_17-09-25</name>
<description>05-22-14_17-09-25</description>
<disks>
<disk name='vda'/>
</disks>
</domainsnapshot>
What am I doing wrong - how can I tell snapshot-create-as to create an external snapshot for a s...
2012 Aug 02
2
Excluding RAW disk from snapshot
...ntly runs the system on a qcow2
based virtual disk, and an NFS export volume on RAW. I'd like to take
a snapshot before a somewhat risky upgrade of oVirt and can't with the
raw image attached.
Looking at the documentation for the snapshot XML, I created this XML
file for the snapshot
<domainsnapshot>
<name>20120802</name>
<description>oVirt 3.1 upgrade</description>
<disks>
<disk name='vda' snapshot='yes' />
<disk name='vdb' snapshot='no' />
</disks>
</domainsnapshot>
When I try the snapsh...
2014 Jun 03
2
LIbvirt Python Snapshot -Domain Crashing
Hi,
I'm using libvirt(1.0.0) with python, for managing virtual machines..
but while taking multiple snapshot domain is crashing...
Snapshot XML
-------------------------
<domainsnapshot>
<name>snp1</name>
<creationTime></creationTime>
<description>Description</description>
<state></state>
<domain>
<uuid></uuid>
</domain>
<parent>
<name></name>
</parent>
<...
2017 Apr 04
2
Live migration with non-shared ZFS volume
...tal data
since last snapshot itself but this feature is not there (AFAIK).
So I am thinking about a workaround:
1. Create snapshot using: "virsh snapshot-create --xmlfile snap.xml
--disk-only --no-metadata test-domain" which will start writing snapshot
data into temporary qcow2 file
<domainsnapshot>
<disks>
<disk name='/dev/zstore/test-volume'>
<source file='/tmp/test-volume.qcow2'/>
</disk>
</disks>
</domainsnapshot>
2. Create snapshot of backing ZFS volume and send it to destination host.
3. Migrate the domain
Curre...
2017 Apr 28
1
Re: Live migration with non-shared ZFS volume
...9;ve found a solution which I consider at least acceptable:
1. create zfs snapshot of domain disk (/dev/zstore/test-volume)
2. save original XML domain definition
3. create snapshot in libvirt like this:
virsh snapshot-create --xmlfile snap.xml --disk-only --no-metadata
test-domain
snap.xml:
<domainsnapshot>
<disks>
<disk name='/dev/zstore/test-volume'>
<source file='/tmp/test-volume.qcow2'/>
</disk>
</disks>
</domainsnapshot>
This creates overlay qcow snapshot on top of my base ZFS volume
3. Transfer ZFS volume (with last snap...
2012 Nov 28
1
error: argument unsupported: unable to handle disk requests in snapshot
Hello, a problem occurred during making a snapshot for a guest, ask for help...
1. the xml for snapshotdomain like this:
# cat deployment.1
<domainsnapshot>
<name>a</name>
<disks>
<disk name='/home/qcow2/disk.0'>
<driver type='qcow2'/>
<source file='/home/qcow2/disk.3'/>
</disk>
</disks>
</domainsnapshot>
2. when i execute the command , a mist...
2018 Mar 20
2
About libvirt domain snapshot problem(for single disk snapshot)
...Images/8d582c1c-355a-4297-9434-2f2f562c77df.sys_disk3
```
2、
``` python
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import libvirt
import libvirt_qemu
import json
import sys
name = sys.argv[1]
print name
conn = libvirt.open()
dom = conn.lookupByName(name)
xml = """
<domainsnapshot>
<name>sysdisk_by_xml</name>
<description>By xml</description>
<disks>
<disk name='vda' snapshot='external'>
</disk>
</disks>
</domainsnapshot>
"""
flags = 0
flags |= libvirt.VIR_DOMAIN_SNAPSHOT_CREATE_DISK_O...
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 file='/home/potato/libvirt/backups/test-snap1.qcow2'/>
</disk>
</disks>
</domai...
2019 Nov 20
1
virsh snapshot-create --print-xml seems to ignore most arguments
...ted XML to create a snapshot via a perl script,
and Sys::Virt only seems to support snapshots using a XML description
of the arguments.
timos@cerberus:~$ sudo virsh snapshot-create-as --domain web guest-
state1 --diskspec hda,file=overlay1.qcow2 --disk-only --atomic --no-
metadata --print-xml
<domainsnapshot>
<name>guest-state1</name>
<disks>
<disk name='hda'>
<source file='overlay1.qcow2'/>
</disk>
</disks>
</domainsnapshot>
timos@cerberus:~$ sudo virsh snapshot-create-as --domain web guest-
state1 --diskspec hda,...
2011 Oct 12
1
XML file format for snapshot-create
...However when running the virsh command, it doesn't like the
formatting.
# virsh snapshot-create proxy_0 /vmstore/proxy_0/proxy_0_ss.xml
error: XML description for failed to parse snapshot xml document is not well
formed or invalid
This are the XML file contents...
# cat proxy_0_ss.xml
<domainsnapshot>
<name></name>
<description>Before updating to CR repo</desciption>
</domainsnapshot>
I'm running libvirt-0.8.7 on CentOS 6 x86_64. I can take snapshots just
fine without defining the XML file, but I'd like to be able to add a
description.
Thanks
- Tr...
2012 Apr 26
1
proper way to snapshot
Hi,
While there are a few howtos floating around, what is the standard way to snapshot guests?
I went through and converted from raw to pre allocated meta data qcow2 images for this purpose.
Some howtos suggest to do an xml snapshot file as so;
<domainsnapshot>
<name>UbuntuServer_10.10-16032011</name>
<description>Snapshot of OS install and updates</description>
</domainsnapshot>
And then to run as so;
virsh snapshot-create UbuntuServer_10.10 UbuntuServer_10.10-ss.xml
Seems a bit over kill.
I was thinking more a...
2014 May 22
0
Re: Live snapshots of a single block device
...-no-metadata --diskspec "vda"
>
> I run this command for each block device (e.g vda, vdb, etc). However, after running the above command (to only backup vda), I see that a snapshot has also been created for vdb. I tried running it with --print-xml, which gives this output:
> <domainsnapshot>
> <name>05-22-14_17-09-25</name>
> <description>05-22-14_17-09-25</description>
> <disks>
> <disk name='vda'/>
> </disks>
The problem you are facing is that the snapshot code MUST have an action
for every disk; and if...
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</des...
2014 Jun 03
1
Re: LIbvirt Python Snapshot -Domain Crashing
...sible to revert to the actual domain state
when I took the snapshot), I'm using libvirt APIs python bindings,
there are many flags defined, so which way I can accomplish it..?
as of now I"m using flag value as zero.
API Call
--------------
snp1=domain1.snapshotCreateXML(snp_xml,0)
virDomainSnapshotCreateFlags
enum virDomainSnapshotCreateFlags {
VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE = 1
Restore or alter metadata
VIR_DOMAIN_SNAPSHOT_CREATE_CURRENT = 2
With redefine, make snapshot current
VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA = 4
Make snapshot without remembering it
VIR_DOMAIN_SNAPSHOT_CREATE_H...
2012 Jul 19
1
Questions related to the snapshot
...and output to a new file in python, there is a slightly
different. But, the new XML file can't be recognized even if I restart my
laptop. The new XML file miss the attribute <active> as far as I can see,
is it so important?
Here is one example:
The original XML in the default folder:
<domainsnapshot>
<name>Ex</name>
<description>Snapshot of OS updates</description>
<state>running</state>
<parent>
<name>1342427860</name>
</parent>
<creationTime>1342428835</creationTime>
<domain>
<uuid>2c...
2013 Jun 26
2
Re: snapshot-create-as for a single disk not all disks
...m --disk-only --diskspec "vda,snapshot=external"
2013/6/25 cmcc.dylan <dx10years@126.com>
>
> Hi, everyone,
> I have found the API snapshotCreateXML() can create a snapshot for a
> virtual machine, and the xml configuration file - snapshot.xml as folllows:
> <domainsnapshot>
> <name>snapshot01</name>
> <description>Snapshot of OS install and updates</description>
> <disks>
> <disk name='vda' snapshot='external'>
> <source file='/data10/snapshot'/>
> </disk>...
2015 Jun 30
0
qemu-img snapshots configuration
Hello.
What it the difference in external snapshot configuration with and
without <domainsnapshot> ?
What is the difference between vda and vdb in the following example?
(From https://libvirt.org/formatsnapshot.html)
<domainsnapshot>
...
<memory snapshot='no'/>
<disks>
<disk name='vda' snapshot='external'>
<driver type='...
2015 Jun 30
0
qemu-img snapshots configuration
Hello.
What it the difference in external snapshot configuration with and
without <domainsnapshot> ?
What is the difference between vda, vdb and vdc in the following example?
(From https://libvirt.org/formatsnapshot.html)
<domainsnapshot>
...
<memory snapshot='no'/>
<disks>
<disk name='vda' snapshot='external'>
<driver type=...
2013 Mar 28
1
Snapshot without volumes temporarily
...volume check when I do the snapshot. (Which means I
want to do a snapshot without detaching the volume)
So I try to write a snapshot XML refer by
http://libvirt.org/formatsnapshot.html as following:
vda is my VM basic disk (qcow2)
vdb is a volume (raw)
================ t1.xml ===============
<domainsnapshot>
<disks>
<disk name='vda' snapshot='internal'>
<source file='/var/lib/libvirt/VM1/disk' />
</disk>
<disk name='vdb' snapshot='no' />
</disks>
</domainsnapshot>
=====================================
with this comma...
2019 Sep 06
1
could not create snapshotxml on encryption image
...f(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/vdsm/common/function.py", line 92, in wrapper
return func(inst, *args, **kwargs)
File "/usr/lib64/python2.7/site-packages/libvirt.py", line 2620, in snapshotCreateXML
if ret is None:raise libvirtError('virDomainSnapshotCreateXML() failed', dom=self)
libvirtError: internal error: unable to execute QEMU command 'transaction': Parameter 'encrypt.key-secret' is required for cipher
And try adding encryption fields to domainsnapshot, as shown below
<?xml version='1.0' encoding='ut...