@Kusalananda I'll assume that you are mounting your shares with `bg,intr,soft`
https://unix.stackexchange.com/questions/31979/stop-broken-nfs-mounts-from-locking-a-directory
Otherwise, NFS will block.
https://unix.stackexchange.com/questions/31979/stop-broken-nfs-mounts-from-locking-a-directory
Otherwise, NFS will block.