[libvirt-users] libvirt-python Create External Snapshot

[Peter Krempa]

On Wed, Jul 03, 2019 at 15:10:42 -0400, Roger Jin wrote:
> 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>
> </domainsnapshot>
> 
> And got the following error:
>     if ret is None:raise libvirtError('virDomainSnapshotCreateXML()
> failed', dom=self)
> libvirt.libvirtError: unsupported configuration: disk 'vda' must use
> snapshot mode 'internal'

You must use the libvirt.VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY flag if
you don't want to include the memory state of the VM or include the
<memory> element in the above XML.
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