From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stan Hoeppner Subject: Re: dm-crypt over raid6 unreadable after crash Date: Mon, 11 Jul 2011 06:49:47 -0500 Message-ID: <4E1AE35B.1020307@hardwarefreak.com> References: <20110706161228.GA1491@apartia.fr> <4E1494BB.9060101@turmel.org> <20110707090540.GA7288@apartia.fr> <4E15A980.3060508@turmel.org> <20110707130917.GA18812@apartia.fr> <4E15B576.9040004@turmel.org> <20110708054045.GA28420@maude.comedia.it> <20110710120350.GA30568@apartia.fr> <4E199AEB.4030606@turmel.org> <4E1A3955.7060207@hardwarefreak.com> <20110711075729.GB32187@apartia.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20110711075729.GB32187@apartia.fr> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 7/11/2011 2:57 AM, Louis-David Mitterrand wrote: > 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. What did it not auto-start your md array in this case again? -- Stan