[libvirt-users] backup procedure using blockcopy

[Thomas Stein]

Am 02.07.13 17:43, schrieb Eric Blake:
> On 07/02/2013 08:19 AM, Thomas Stein wrote:
>>> Try this modification (again untested, but at least doesn't have a block
>>> job running during the save attempt):
>>>
>>>    virsh dumpxml --security-info dom > dom.xml
>>>    virsh undefine dom
>>>    virsh blockcopy dom vda /path/to/backup-vda
>>>    polling loop - check periodically until 'virsh blockjob dom vda'
>>>      shows 100% completion
>>>    virsh suspend dom
>>>    virsh blockjob dom vda --abort
>>>    virsh save dom /path/to/memory-backup --running
> 
> Good through here.
> 
>>>    virsh resume dom
>>>    virsh define dom.xml
>> 
> 
>> 
>> virsh resume gentoo-template
>> error: failed to get domain 'gentoo-template'
>> error: Domain not found: no domain with matching name 'gentoo-template'
> 
> Aha - then 'virsh resume dom' is not correct; we merely need 'virsh
> restore /path/to/memory-backup' which should load from the memory save
> file and start it running again (since we saved it with --running in the
> first place).

Yes. This works. So for now my backup looks like this:

virsh dumpxml --security-info dom > dom.xml
virsh undefine dom
virsh blockcopy dom vda /path/to/backup-vda
polling loop - check periodically until 'virsh blockjob dom vda'
shows 100% completion
virsh suspend dom
virsh blockjob dom vda --abort
virsh save dom /path/to/memory-backup --running
virsh restore /path/to/memory-backup
virsh resume dom
virsh define dom

Thank you again Eric. I'm quite happy with that solution.

Thomas