[ovirt-users] Unable to start VMs after upgrade from 4.4.9 to 4.4.10

Hi List, I receive the following error while starting some of our VMs after the upgrade to 4.4.10. VM v4-probe is down with error. Exit message: internal error: process exited while connecting to monitor: 2022-03-24T11:27:23.098838Z qemu-kvm: -blockdev {"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage","backing":"libvirt-3-format"}: Failed to get "write" lock Is another process using the image [/rhev/data-center/mnt/lxskinner:_exports_skinner__2tb__1/28da0c79-b6f1-4740-bd24-e7bafcb62c75/images/90b28e7e-98a3-4f80-a136-c5a52c4a3e05/c1450651-b1e5-47fd-906b-8ebd62ace8a4]?. The example disk is located on a NFS share. Any idea how to tell oVirt that there is no other process using this disk? Best regards and thx Christoph