Add option "idle_disconnect"

[thatguystone]

I have a few sshfs mounts that I always have mounted, but only occasionally access. It feels a bit wasteful to maintain ssh connections so that they can just sit there.

This adds a new option, -o idle_disconnect, that causes a connection to disconnect once it has been idle for some number of seconds.

[Nikratio]

Thanks for the patch! I am not sure I like the idea though. Have you confirmed what happens if the idle timeout is exceeded while an application has a file open? It seems to me that this would probably not play well with closing the connection.

In general, wouldn't this usecase be better served by mounting the sshfs filesystem on demand (with automount)?

[thatguystone]

Have you confirmed what happens if the idle timeout is exceeded while an application has a file open? It seems to me that this would probably not play well with closing the connection.

If any descriptor is still open, it falls through to process_one_request(), but I can always test it further

In general, wouldn't this usecase be better served by mounting the sshfs filesystem on demand (with automount)?

That's a great point. I actually ended up here because automounters currently run sshfs as root, and that made me really uncomfortable. There's been some discussion around fixing this, but so far, no movement.

It would probably be a better option for me to get some movement going with systemd rather than working around it here.

[Nikratio]

Ok, will close this now then. Thanks for reporting back!

[thatguystone]

This was merged in systemd/systemd#21315 and should be part of systemd 250.