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.