Comment 2 for bug 583542

I don't believe mountall emits any event that would be suitable for this. The only other plausible one is local-filesystems, whose manual page notes that it may well not cover /usr so it's not suitable for use by the ssh job.

'filesystem' is documented as being appropriate for most normal services, so surely many other services have the same problem? Most notably, rc-sysinit starts on filesystem, so you'll never reach runlevel 2 if that event is never emitted. It seems to me that any change I might make in ssh would tend to make matters worse, not better.

Can't you use the nobootwait option in /etc/fstab to avoid holding up boot for filesystems that aren't needed to get up and running? This is documented in fstab(5).