I have a VM (Virtualbox) running 18.04 with LTSP. I want the users home directories to be on the bare metal not in the VM so I created /homes on bare metal and used vboxsf to mount it into the VM (created a shared folder in VB). When I tried to create a new user I get an error about Protocol Error. /homes on bare metal and in VM is owned by root with same perms as /home on both. What am I missing? or doing wrong?
Code:
sudo adduser -home /homes/test3 test3
Adding user `test3' ...
Adding new group `test3' (1003) ...
Adding new user `test3' (1003) with group `test3' ...
Creating home directory `/homes/test3' ...
Stopped: Couldn't create home directory `/homes/test3': Protocol error.
Removing directory `/homes/test3' ...
Removing user `test3' ...
Removing group `test3' ...
groupdel: group 'test3' does not exist
adduser: `groupdel test3' returned error code 6. Exiting.