Re: mount -o remount,ro cause error "device is busy"
Petro (petro@auctionwatch.com)
Wed, 6 Mar 2002 18:27:49 -0800
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.
--
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