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Re: xfs_repair of root filesystem

To: Jeremy Jackson <jerj@xxxxxxxxxxxx>
Subject: Re: xfs_repair of root filesystem
From: Eric Sandeen <sandeen@xxxxxxx>
Date: 31 Mar 2003 16:59:55 -0600
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <1049150626.1258.58.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
References: <1049150626.1258.58.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Sender: linux-xfs-bounce@xxxxxxxxxxx
hi Jeremy - It's in the faq,
http://oss.sgi.com/projects/xfs/faq.html#xfschecks

Q: My filesystem is ok - but xfs_check or xfs_repair shows errors/won't
run - whats wrong here?

You can not run xfs_repair on a mounted filesystem although support is
available in CVS (08-02-2002) that lets you run xfs_repair with the -n
switch on a read-only mounted filesystem. You must not try to repair a
mounted fs since this will result in dataloss and corruption when
attempted.
If you have to repair you're filesystem it needs to be unmounted first.
If this is the root (/) filesystem this will mean you have to boot from
a bootable CD and perform the repair on the unmounted filesystem. There
is a link to various bootable floppy/cd projects mentioned in the FAQ
here. 

-Eric

On Mon, 2003-03-31 at 16:43, Jeremy Jackson wrote:
> Hi,
> 
> I'm wonder what's the official word about xfs_repair on a read-only
> mounted fs.  The utilities complain for me, so I have to boot from a
> repair partition to fix XFS (a while back when the shutdown files in use
> bug was still a problem).  Ext2 has no problem with this.  I'd just to
> know for future reference, so I know if I have to have a spare root fs 
> or not.
> 
> -- 
> Jeremy Jackson <jerj@xxxxxxxxxxxx>
> 
-- 
Eric Sandeen      XFS for Linux     http://oss.sgi.com/projects/xfs
sandeen@xxxxxxx   SGI, Inc.         651-683-3102


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