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Date: Wed, 6 Mar 2002 18:27:49 -0800
From: Petro <petro@auctionwatch.com>
To: Michael Cheung <vividy@justware.co.jp>
Cc: Andreas Dilger <adilger@clusterfs.com>, linux-kernel@vger.kernel.org
Subject: Re: mount -o remount,ro cause error "device is busy"
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On Wed, Mar 06, 2002 at 05:33:45PM +0900, Michael Cheung wrote:
> hi,
> 
> maybe i am wrong, but I really can't find any other process runing.
> 
> my step is:
> 1) "/" and "/usr" are busy
> 2) shut down to single user mode
> 3) "/" still busy
> 4) "/usr" can be unmounted, but can't mount -o ro,remount /usr, show busy error.
> 5) umount -a, after this, only /proc and / exist.
> 6) mount -o ro,remount /, show busy error.
> On Wed, 6 Mar 2002 01:15:19 -0700
> Andreas Dilger <adilger@clusterfs.com> wrote:
> > Clearly, some program is keeping "/usr" busy (which is keeping "/" busy)
> > before the change to single user mode.  Just a bit of "lsof" needed to
> > find such things.                                      ||||
                                                           ^^^^
    Best bet is to man lsof. 

    lsof's your buddy. 
    
-- 
Share and Enjoy. 
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