From: upendra gandhi Subject: Re: how to force umount when "Device or resource busy"? Date: Mon, 01 Nov 2004 08:55:23 -0800 Message-ID: <41866A7B.9030303@oracle.com> References: <418187A2.6070702@oracle.com> Mime-Version: 1.0 Content-Type: text/html; charset=us-ascii Cc: ms419@freezone.co.uk, nfs@lists.sourceforge.net Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list2.sourceforge.net with esmtp (Exim 4.30) id 1COfTH-0007fJ-Kt for nfs@lists.sourceforge.net; Mon, 01 Nov 2004 08:55:55 -0800 Received: from agminet01.oracle.com ([141.146.126.228]) by sc8-sf-mx1.sourceforge.net with esmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.41) id 1COfTF-00039F-3T for nfs@lists.sourceforge.net; Mon, 01 Nov 2004 08:55:55 -0800 To: Ian Kent In-Reply-To: Sender: nfs-admin@lists.sourceforge.net Errors-To: nfs-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Post: List-Help: List-Subscribe: , List-Archive: Ver: autofs-4.1.3-12

Ian Kent wrote:

On Thu, 28 Oct 2004, upendra gandhi wrote:

is there an answer to this we are facing this issue in autofs4


I Asked for version info. before.

Can you provide it please?

thks

ms419@freezone.co.uk wrote:

How does one unmount when umount doesn't work?

Somehow, I got an NFS / AutoFS mount that just won't unmount.

I noticed /var/autofs/net was mounted twice, so I stopped AutoFS & 
tried killing the remaining automount process. "kill 14986" didn't 
work; I needed "kill -9 14986". The following mounts remain:

wum:~# mount
[...]
automount(pid14986) on /var/autofs/net type autofs 
(rw,fd=5,pgrp=14986,minproto=2,maxproto=4)
tor:/home on /var/autofs/net/tor/home type nfs 
(rw,nosuid,nodev,hard,intr,addr=192.168.103.158)

& I can't unmount them:

wum:~# umount /var/autofs/net/tor/home
umount: /var/autofs/net/tor/home: device is busy
umount: /var/autofs/net/tor/home: device is busy
wum:~# umount -f /var/autofs/net/tor/home
umount2: Device or resource busy
umount: /var/autofs/net/tor/home: Illegal seek
umount2: Device or resource busy
umount: /var/autofs/net/tor/home: device is busy
wum:~# umount /var/autofs/net
umount: /var/autofs/net: device is busy
umount: /var/autofs/net: device is busy
wum:~# umount -f /var/autofs/net
umount2: Device or resource busy
umount: automount(pid14986): not found
umount: /var/autofs/net: Illegal seek
umount2: Device or resource busy
umount: /var/autofs/net: device is busy

I triple checked that no process is using these mounts. How do I 
unmount them?

Thanks!

Jack



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