From: Michal Soltys <soltys@ziu.info>
To: Justin Piszcz <jpiszcz@lucidpixels.com>
Cc: nterry <nigel@nigelterry.net>, linux-raid@vger.kernel.org
Subject: Re: Raid 5 Problem
Date: Sun, 14 Dec 2008 23:55:19 +0100 [thread overview]
Message-ID: <49458ED7.1030005@ziu.info> (raw)
In-Reply-To: <alpine.DEB.1.10.0812141600430.27065@p34.internal.lan>
Justin Piszcz wrote:
>
> You have another issue here though, it looks like your "few" attempts have
> lead to multiple RAID superblocks. I have always wondered how one can
> clean
> this up without dd if=/dev/zero of=/dev/dsk & (for each disk, wipe it)
> to get
> rid of them all, you should only have [1] /dev/md0 for your raid 5, not 3.
Well - 0.9 superblock is 4K at 64K boundary, at least 64K from the end
of the device, but less 128K (man 4 md). If a filesystem on some
partition taking up that space *didn't* overwrite this space with its
[meta]data (check with debugfs, xfs_db, etc.), just clean it up
*carefully* with dd or hexeditor.
next prev parent reply other threads:[~2008-12-14 22:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-14 13:41 Raid 5 Problem nterry
2008-12-14 15:34 ` Michal Soltys
2008-12-14 20:41 ` nterry
2008-12-14 20:53 ` Justin Piszcz
2008-12-14 20:58 ` nterry
2008-12-14 21:03 ` Justin Piszcz
2008-12-14 21:08 ` Nigel J. Terry
2008-12-14 22:55 ` Michal Soltys [this message]
2008-12-14 21:14 ` Michal Soltys
2008-12-14 21:34 ` nterry
2008-12-14 22:02 ` Michal Soltys
2008-12-15 21:50 ` Neil Brown
2008-12-15 23:07 ` nterry
2008-12-16 20:39 ` nterry
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