From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Waychison Subject: Re: Is it normal for autofs to remount a file system more than once? Date: Thu, 02 Sep 2004 22:48:14 -0400 Sender: autofs-bounces@linux.kernel.org Message-ID: <4137DB6E.3020204@sun.com> References: <41379549.2040305@physics.ucsd.edu> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-reply-to: <41379549.2040305@physics.ucsd.edu> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: autofs-bounces@linux.kernel.org Content-Type: text/plain; charset="us-ascii" To: Terrence Martin Cc: autofs@linux.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Terrence Martin wrote: > Hi, > > I am not sure if this is related to my NFS mount hanging problems, but I > have noticed that autofs will often remount a file system multiple > times. Is this normal? I think I have pretty straight forward auto. > files.... > > Terrence Martin > UCSD Physics > > mount > > df Both of these tools get their mount information from /etc/mtab, a plain text file. This file can get out of sync for a variety of reasons unfortunately. Some common reasons I usually see are: - - You may be using multiple namespaces. [u]mount(8) doesn't know how to handle this. - - [u]mount(8) has trouble getting a lock on the file, so it has trouble updating. The only way to see an accurate picture of your mount tree is to look at /proc/mounts. If this file has multiple entries for your automounted filesystem, then there indeed is a problem. Btw, you didn't mention which kernel(+patches?) and automount version are you using. That would help :) Thanks, - -- Mike Waychison Sun Microsystems, Inc. 1 (650) 352-5299 voice 1 (416) 202-8336 voice http://www.sun.com ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ NOTICE: The opinions expressed in this email are held by me, and may not represent the views of Sun Microsystems, Inc. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFBN9ttdQs4kOxk3/MRAnxeAJ9EU/vVu0J2OIl8hjFPWWkGd6IvMACeMkY5 VUKsB/GK2poT2NBx5AEZD30= =AqLw -----END PGP SIGNATURE-----