Qemu-kvm: Failed to get "write" lock

I created a new node on our infrastructure and now whenever I want to start a VM on this new node I get these error messages:

error: qemu unexpectedly closed the monitor: 2019-10-28T17:09:21.244860Z qemu-kvm: -drive file=/var/lib/one//datastores/106/214/disk.0,format=qcow2,if=none,id=drive-ide0-0-0,cache=none: Failed to get "write" lock
Mon Oct 28 18:09:34 2019 [Z0][VMM][I]: Is another process using the image [/var/lib/one//datastores/106/214/disk.0]?
Mon Oct 28 18:09:34 2019 [Z0][VMM][E]: Could not create domain from /var/lib/one//datastores/106/214/deployment.38

Interestingly the file deployment.38 exists afterwards. And when I run lsof on this file afterwards I have no process using this file. This datastore is on NFS and we have opennebula 5.8.5.

Does anybody have some more ideas how I could investigate what exactly is going on?

UPDATE: I tested it now with a VM on the ceph store and there it works. So it must be something related to NFS.

Could you share the mount options for that NFS mount? Does it only happen with one image or several?