Cannot umount /usr filesystem (ALWAYS "busy")

[Brad Cleghorn]

drich at dialogic.com (Dan Rich) writes:

>I have run into this problem myself, and have gone through all of the
>obvious solutions.  I have checked for processes with both fuser, and
>ps.  But, I did have an idea late last night that I haven't had the
>time to check on yet.

I have found that if my home dir is in /usr, and I'm logged in, (no
matter *what* my pwd is) /usr won't umount -- Even if I'm su.  I had
to log in on the console port as root.