Path: utzoo!attcan!uunet!apctrc!zjat02
From: zjat02@apctrc.UUCP (Jon A. Tankersley)
Newsgroups: comp.unix.questions
Subject: Re: umount : fs busy
Message-ID: <520@cra2.apctrc.UUCP>
Date: 7 Sep 88 17:14:31 GMT
References: <27262@neabbs.UUCP>
Reply-To: zjat02@cra2.UUCP (Jon A. Tankersley)
Organization: Amoco Production Co, Tulsa Research Center
Lines: 22

Tis simple...


Something somewhere has a file/directory open/accessed on that file system.

Mount something in /mnt.  cd /mnt/whatever.  umount /mnt.
it will fail.  A shell has . accessed as the current directory....

There is fuser or ofiles programs available in various places.  I don't
have fuser and ofiles has some bugs (doesn't do nfs mounts well).

Also - bug alert on SunOS 3.X...

rc.boot trashes /etc/mtab before running /etc/umount -at nfs.  This leaves
potential garbage on remote systems /etc/rmtab (remote mtab).  4.0 has
fixed the problem.
Moving the umount up before the trashing of mtab won't fix the problem because
the enternet needs to be started also....  Sigh.

-tank-
-- 
#include <disclaimer.h>		/* nobody knows the trouble I .... */