Even with user-show-menu=false schema, indicator-session still automounts /home NFS directories

[Landon Thomas]

I run several Ubuntu 12.04 labs with about 6400 users shared out via NIS. Each user gets their own /home/username ZFS pool shared out over NFS.

The problem is every time a user logs in, indicator-session-service automounts every user in the DBUS user cache. This can create over 100 unnecessary /home mounts on a single client and the file server currently shows over 17,000 mounted directories across the domain.

If I use this override schema, the indicator-session applet doesn't show up upon login:

[com.canonical.indicator.session]
user-show-menu=false

but it still mounts the /home directories in the background. If I 'chmod 000 /usr/lib/indicator-session/indicator-session-service' before logging in, the indicator-session applet still doesn't show up but it doesn't mount the extraneous /home directories either. Unfortunately, the 000 permissions break the logout button.

In my opinion, the override schema should disable the indicator-session functionality more effectively.