Before I go into the details I should pose the most important question: Has anyone else managed to get a nfs server working on 18.06.4? If so then I've likely set something up wrong. Otherwise...
I have spent the last couple of days trying to get nfs server working with a standard usb mount and I just can't get it going.
From what I can tell it looks as though rpc.statd is not running when it should be. The other processes appear to be running ok (portmap, rpc.mountd). If I try mounting locally on the router I see:
mount.nfs: rpc.statd is not running but is required for remote locking.
If I try to manually start rpc.statd (just to see what it comes back with) I see
sm-notify: Already notifying clients; Exiting!
Looking at the forum I see lots of hints that this might be something that is currently broken but I haven't seen anything specific to this version so thought it was best to ask.
If there is a bug, has anyone found a workaround/fix? I'm happy to build stuff if necessary.