From mboxrd@z Thu Jan  1 00:00:00 1970
From: Phil Turmel <philip@turmel.org>
Subject: Re: Failed during rebuild (raid5)
Date: Mon, 06 May 2013 22:16:06 -0400
Message-ID: <518863E6.7020909@turmel.org>
References: <51839E4F.7050102@midgaard.us> <CANU9nTneT2CRWJhdN=d87Hb7W9M+apQH+fRE-S+sieZ-W6+hjg@mail.gmail.com> <51866602.8000704@midgaard.us> <518693EF.6090802@midgaard.us> <518721CD.2040108@turmel.org> <51878BD0.9010809@midgaard.us> <5187A3D2.6060109@turmel.org> <5188189D.1060806@midgaard.us> <51884D49.3090602@turmel.org> <5188556A.7050605@midgaard.us> <51885CDB.8040508@turmel.org> <5188620B.4050206@midgaard.us>
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To: Andreas Boman <aboman@midgaard.us>
Cc: linux-raid <linux-raid@vger.kernel.org>
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On 05/06/2013 10:08 PM, Andreas Boman wrote:
> My ddrescue problem remains however, I'm still unable to get my degraded
> array online with the ddrescued disk since I'm missing the md superblock
> on that disk.
> 
> /Andreas
> 
> mdadm -E /dev/sdf1
> mdadm: No md superblock detected on /dev/sdf1.

Try using "blockdev --rereadpt /dev/sdf".  Then check again.

Phil