From: Andreas Klauer <Andreas.Klauer@metamorpher.de>
To: Simon Becks <beckssimon5@gmail.com>
Cc: Linux-RAID <linux-raid@vger.kernel.org>
Subject: Re: restore 3disk raid5 after raidpartitions have been setup with xfs filesystem by accident
Date: Wed, 21 Sep 2016 21:00:35 +0200 [thread overview]
Message-ID: <20160921190035.GA6949@metamorpher.de> (raw)
In-Reply-To: <CAKA=zHoJu2vTXQa4yvbJDA2nmQwXLHyw2DfUJ+cVgTDr_gu2XQ@mail.gmail.com>
On Wed, Sep 21, 2016 at 08:31:23PM +0200, Simon Becks wrote:
> Maybe i just assembled it in the wrong order?
Yes, or maybe the superblock was overwritten by XFS after all.
You could check what's at offset 1M for each disk.
losetup --find --show --read-only --offset=$((2048*512)) /the/disk
file -s /dev/loop42
If the superblock was still intact it should say ext4 or whatever
your filesystem was for at least one of them.
You can also try this for the disk you removed 2 month ago.
If that is not the case and fsck with backup superblock also
is not successful then you'll have to see if you find anything
valid in the raw data.
Regards
Andreas Klauer
next prev parent reply other threads:[~2016-09-21 19:00 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-21 10:39 restore 3disk raid5 after raidpartitions have been setup with xfs filesystem by accident Simon Becks
2016-09-21 13:34 ` Benjamin ESTRABAUD
2016-09-21 15:38 ` Chris Murphy
2016-09-21 16:56 ` Simon Becks
2016-09-21 17:15 ` Andreas Klauer
2016-09-21 17:23 ` Simon Becks
2016-09-21 18:03 ` Andreas Klauer
2016-09-21 18:31 ` Simon Becks
2016-09-21 19:00 ` Andreas Klauer [this message]
2016-09-21 19:50 ` Simon Becks
2016-09-21 20:41 ` Simon Becks
2016-09-21 20:56 ` Andreas Klauer
2016-09-21 21:07 ` Chris Murphy
2016-09-21 21:30 ` Simon Becks
2016-09-22 5:46 ` Simon Becks
2016-09-22 9:56 ` Andreas Klauer
2016-09-21 20:53 ` Andreas Klauer
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