From mboxrd@z Thu Jan  1 00:00:00 1970
From: Louis-David Mitterrand <vindex+lists-linux-raid@apartia.org>
Subject: Re: dm-crypt over raid6 unreadable after crash
Date: Mon, 11 Jul 2011 09:57:30 +0200
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On Sun, Jul 10, 2011 at 06:44:21PM -0500, Stan Hoeppner wrote:
> 
> Moral of this story:  Using live CDs to troubleshoot Linux RAID arrays,
> LVM volumes, dmcrypt, etc, is tricky at best, fraught with disaster at
> worst.  Always have a "system rescue" CD/DVD built from the particular
> machine in question at the ready.  Most distros have a facility for
> building such a per machine boot/rescue CD.  Such media will have the
> same kernel and module versions, the system's mdadm configuration, and
> all other system specific stuff needed to properly troubleshoot and repair.
> 
> If such rescue media had been used the OP would have likely experienced
> far less grief, and might already had this problem fixed.

A live CD like grml can properly auto-start a md array. My problem
came from doing a --create instead of an --assemble at some point.