From mboxrd@z Thu Jan 1 00:00:00 1970 From: Terrence Martin Subject: Re: Is it normal for autofs to remount a file system more than once? Date: Fri, 03 Sep 2004 01:01:54 -0700 Sender: autofs-bounces@linux.kernel.org Message-ID: <413824F2.5040603@physics.ucsd.edu> References: <41379549.2040305@physics.ucsd.edu> <4137DB6E.3020204@sun.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4137DB6E.3020204@sun.com> 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"; format="flowed" To: Mike Waychison Cc: autofs@linux.kernel.org Hi, Aparently it looks like I have a problem cat /proc/mounts automount(pid4347) /home autofs rw 0 0 192.168.20.3:/home/cdfcaf /home/cdfcaf nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=192.168.20.3 0 0 192.168.20.3:/home/cdfsoft /home/cdfsoft nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=192.168.20.3 0 0 192.168.10.5:/falcon/0/users /home/users nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=192.168.10.5 0 0 automount(pid23831) /home autofs rw 0 0 192.168.20.3:/home/cdfcaf /home/cdfcaf nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=192.168.20.3 0 0 192.168.20.3:/home/cdfsoft /home/cdfsoft nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=192.168.20.3 0 0 automount(pid18432) /home autofs rw 0 0 192.168.20.3:/home/cdfcaf /home/cdfcaf nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=192.168.20.3 0 0 192.168.20.3:/home/cdfsoft /home/cdfsoft nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=192.168.20.3 0 0 frontend-3.local:/export/home/install /home/install nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=frontend-3.local 0 0 automount(pid29678) /home autofs rw 0 0 192.168.10.5:/falcon/0/users /home/users nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=192.168.10.5 0 0 automount(pid3017) /home autofs rw 0 0 automount(pid3047) /netstor autofs rw 0 0 automount(pid3077) /afs autofs rw 0 0 automount(pid3105) /groot autofs rw 0 0 192.168.10.5:/falcon/0/users /home/users nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=192.168.10.5 0 0 frontend-3.local:/export/home/install /home/install nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=frontend-3.local 0 0 192.168.20.3:/home/cdfsoft /home/cdfsoft nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=192.168.20.3 0 0 Several entries occure more than once. I am not sure what you are meaning by multiple name spaces with regards to autofs? Also my kernel is a RedHat RHEL3 stock kernel. uname -a Linux compute-3-4.local 2.4.21-4.0.1.ELsmp #1 SMP Sat Nov 29 04:15:49 GMT 2003 i686 i686 i386 GNU/Linux Autofs version 3.1.7-41 Terrence Mike Waychison wrote: >-----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----- > > >