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From: Andreas Dilger <adilger@clusterfs.com>
To: Jon Hedlund <JH_ML@invtools.com>
Cc: sct@redhat.com, akpm@zip.com.au, linux-kernel@vger.kernel.org
Subject: Re: 2.2 kernel - Ext3 & Raid patches
Date: Tue, 21 May 2002 19:21:33 -0600	[thread overview]
Message-ID: <20020522012133.GE13211@turbolinux.com> (raw)
In-Reply-To: <3CEA7866.23557.390B7FFC@localhost>

On May 21, 2002  16:40 -0500, Jon Hedlund wrote:
> Last September Stephan told someone on the linux-kernel list that 
> Ext3 and Raid 1 didn't work together on the 2.2 kernel. 
> Has this been fixed or have I just been lucky?

You've just been lucky.  I forget the exact scenario, but it is
something like if journal replay is happening while the RAID is being 
reconstructed after a crash you can get garbage written to your disk.

> Three times in the last 9 months one of the drives reported errors 
> and dropped offline, each time I have fdisked the bad drive, 
> formatted it, fsck'ed it and found no problems, fdisked it again, and 
> raidhotadd'ed it back in and it restored the array without problems.

This is probably a matter of block remapping replacing bad sectors when
you try to write to it.

Cheers, Andreas
--
Andreas Dilger
http://www-mddsp.enel.ucalgary.ca/People/adilger/
http://sourceforge.net/projects/ext2resize/


  reply	other threads:[~2002-05-22  1:23 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-05-21 21:40 Jon Hedlund
2002-05-22  1:21 ` Andreas Dilger [this message]
2002-05-22 10:16   ` Stephen C. Tweedie
2002-05-23  1:11 ` Mike Fedyk
2002-05-23  7:02   ` Tomas Szepe
2002-05-23  7:03     ` David S. Miller
2002-05-23  7:21       ` Tomas Szepe
2002-05-23  8:42       ` Tomas Szepe
2002-05-23  8:49   ` Stephen C. Tweedie
2002-05-23 14:52     ` Herman Oosthuysen
2002-05-23 22:25       ` Stephen C. Tweedie

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