On Thu, Jan 21, 2021 at 17:34:25 +0300, Andrey Fokin wrote: > Peters, thanks! It was a lot of XML errors. You are right about. But it > doesn't work... I've an error about backup type- > Operation not supported: incremental backup is not supported yet > How is possible describe full backup operation? Did you apply the VM XML workaround that I've pointed out twice already: https://www.redhat.com/archives/libvirt-users/2021-January/msg00034.html And if yes, did you restart your VM after adding the XML to enable the feature?