Get autofs to work or some other way to get NFS to disconnect off more quickly?

[oshunluvr]

On my Kubuntu laptop, my NFS mounted share take 1.5 - 2 minutes to "disconnect" when I reboot or shutdown. Strangely, my Desktop running KDEneon does not. The only notable difference is wifi is usually used on the laptop while the desktop is ethernet only.

I started out with the same setup on both - a mount specified in fstab with exactly the same options:

server:/ /shared nfs nofail,x-systemd.automount,x-systemd-device-timeout=10,_netdev,bg,hard,timeo=28,retrans=5,intr,noatime,nodiratime 0 0

This never delays my desktop reboot. To verify, I manually unmounted the NFS share and the laptop shutdown quickly.

Exploring a bit, I changed "hard" to soft and reduced "timeo" but no difference

Then I attempted to set up autofs instead because supposedly it will automatically disconnect the share after a timeout period. However, no joy at all getting it to work. There's no errors and I followed every website write up I could find, but no mount.

/etc/auto.master has this as the last line:

/shared /etc/auto.nfs --timeout=360

and /etc/auto.nfs has this:

shared -fstype=nfs4,nofail,x-systemd.automount,x-systemd-device-timeout=10,_netdev,bg,soft,timeo=28,retrans=5,intr,noatime,nodiratime server:/

Eventually, I took out every option except -fstype=nfs4 but still not working.

I'm really just looking to reboot in a normal fashion, but I also don't want the NFS share to "hang" me when I'm not on my home network.