From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robin Bowes Subject: new array not starting Date: Wed, 08 Nov 2006 01:59:08 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Hi, I've just done an FC6 install on to a system with 2 x 250GB disks and 8 x 500GB disks. /dev/md0 is a 100MB mirror mounted as boot, and /dev/md1 is another mirror using the rest of the disks and is assigned to an LVM PV/VG with LVs created for various system partitions. After fun and games with grub (0.97 only supports up to 8 disks - I had to patch grub to support up to 16 disks) I got the server to boot. I then configured /dev/md2 as an 8 disk RAID6 array using the 8 x 500GB disks using the whole of each disk for the array, i.e. no partitions. This is the command I used to create the array: mdadm --create /dev/md2 --raid-devices=8 --level=6 --auto=yes /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh /dev/sdi /dev/sdj When the array havd finished syncing, I rebooted the server. However, /dev/md2 did not restart. If I try to start the array manually: # mdadm --assemble --auto=yes /dev/md2 /dev/hdc /dev/hdd /dev/hde /dev/hdf /dev/hdg /dev/hdh /dev/hdi /dev/hdj mdadm: cannot open device /dev/hdc: No such file or directory mdadm: /dev/hdc has no superblock - assembly aborted What's going on here? No superblock? Doesn't that get written when the array is created? Am I doing this right? Thanks, R.