From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rudy Zijlstra Subject: Re: RAID6 simply does not start as /dev/md8 Date: Fri, 08 Apr 2011 16:23:22 +0200 Message-ID: <4D9F1A5A.1060600@grumpydevil.homelinux.org> References: <4D9EC097.7010600@web.de> <20110408151751.5e2b61f1@natsu> <4D9F1962.3050806@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4D9F1962.3050806@web.de> Sender: linux-raid-owner@vger.kernel.org To: Yann Ormanns Cc: Roman Mamedov , linux-raid@vger.kernel.org List-Id: linux-raid.ids On 04/08/2011 04:19 PM, Yann Ormanns wrote: > Subject: Re: RAID6 simply does not start as /dev/md8 > From: Roman Mamedov > To: Yann Ormanns > Date: 2011-04-08 16:15 (+0600) > > >> After you do various changes to your mdadm.conf, don't forget to update your >> initrd. AFAIK mdadm.conf is copied into the compressed initrd image to be used >> early at boot, and this copy has to be kept in sync with your version in /etc. >> >> Typically you can update initrd for all installed kernels by running something >> like: >> >> update-initramfs -k all -u >> >> > Thank you for your quick response. I do not use an initrd - during the > boot process the kernel reconnects and assembles md1,md2,md3,md5,md6 and > md7 (these are all RAID1) without any problems. Only the assembly of the > RAID6 does not work at all. > > Do you have perhaps old raid metadata on the disks? Are you certain you have no raid metadata on the whole disks? you can check with mdadm --Examine /dev/sdc Cheers Rudy