Comment # 4 on bug 963616 from sd fs

(In reply to Neil Brown from comment #3)
> ... and I failed to duplicate it.
> 
Yeah, bot surprised.  Guessing timings/timeouts matter and something's near an
edge.

> Are you able to perform a test for me?
> Remove the "deps.conf" and create instead a "post.conf" file in the same
> directory containing
> 
> [Service]
> ExecStartPost=
> 
> that will disable the "/usr/bin/mount -at nfs,nfs4" line that doesn't seem
> to be necessary and may be causing a problem.
> Then reboot.

Making the change

 rm   /etc/systemd/system/nfs.service.d/deps.conf
 edit /etc/systemd/system/nfs.service.d/post.conf
  [Service]
  ExecStartPost=

reboot guest
at host console
    ...
    [  OK  ] Started Name Service Cache Daemon.
    [   23.963669] systemd[1]: Started Name Service Cache Daemon.
    [  OK  ] Started Alias for NFS client.
    [   23.997343] systemd[1]: Started Alias for NFS client.
    [   24.027148] systemd[1]: Starting Remote File Systems (Pre).
    [  OK  ] Reached target Remote File Systems (Pre).
    [   24.059333] systemd[1]: Reached target Remote File Systems (Pre).
    ...
    [  OK  ] Started OpenSSH Daemon.
    [   40.888124] systemd[1]: Started OpenSSH Daemon.
    ...

login 
at guest console

 systemctl status nfs.service
  nfs.service - Alias for NFS client
     Loaded: loaded (/usr/lib/systemd/system/nfs.service; enabled)
    Drop-In: /run/systemd/generator/nfs.service.d
             ������50-insserv.conf-$remote_fs.conf
          /etc/systemd/system/nfs.service.d
             ������requires.conf
     Active: active (exited) since Wed 2016-01-27 06:18:41 PST; 4min 45s ago
    Process: 732 ExecStart=/bin/true (code=exited, status=0/SUCCESS)
   Main PID: 732 (code=exited, status=0/SUCCESS)
     CGroup: /system.slice/nfs.service

So, seems to work