OK, checked, all directories and files are owned by user backup. Then i rebooted all nodes and pbs again and restarted the jobs. Now it went trough. Dont know why. Maybe because the backup datastore is NFS
After I did my weekly update on pve and pbs, followed by reboot, unfortunately since then all backups are failing with
backup connect failed: command error: Permission denied (os error 13)
How to handle this?
PBS 4.2.0
PVE 9.1.11...