On Wed, 28 Mar 2012 03:54:45 -0400 Bryan Bush <bbushvt@xxxxxxxxx> wrote: > On Wed, Mar 28, 2012 at 12:18 AM, NeilBrown <neilb@xxxxxxx> wrote: > > On Tue, 27 Mar 2012 22:44:18 -0400 Bryan Bush <bbushvt@xxxxxxxxx> wrote: > > > >> I hope this is the right place to ask this question. I have at 8 > >> drive RAID 6 array that I wanted to grow to 13 drives (adding 5 more). > >> I issued the mdadm command and checked /proc/mdstat and all looked > >> well. However at some point in time a disk failed and that hung my > >> system. Upon reboot the array is inactive and I can't get it to > >> reassemble. > > > Hmmm... what do you have in /etc/mdadm.conf?? > > root@diamond:~# cat /etc/mdadm/mdadm.conf > # mdadm.conf > # > # Please refer to mdadm.conf(5) for information about this file. > # > > # by default, scan all partitions (/proc/partitions) for MD superblocks. > # alternatively, specify devices to scan, using wildcards if desired. > DEVICE partitions > > # auto-create devices with Debian standard permissions > CREATE owner=root group=disk mode=0660 auto=yes > > # automatically tag new arrays as belonging to the local system > HOMEHOST <system> > > # instruct the monitoring daemon where to send mail alerts > MAILADDR root > > # definitions of existing MD arrays > > # This file was auto-generated on Fri, 14 Jan 2011 22:22:14 -0500 > # by mkconf $Id$ > > ARRAY /dev/md1 level=raid6 num-devices=8 metadata=01.02 name=1 > UUID=fa32e2c5:e7bda20b:32af7c90:c7ee61eb I think this array now has 13 devices, not 8. You might want to fix that. If you do, it might all magically start working. (also get rid of the metadata= or make it metadata=1.2) Or just get rid of the num-devices= bit. > ARRAY /dev/md0 level=raid5 num-devices=4 metadata=00.90 > UUID=989c3b8b:bd60d243:683690d9:73a11dfa > > root@diamond:~# > > > > > Though if the names have changed at all it would be safer to do > > > > mdadm -Asf /dev/md1 -u fa32e2c5:e7bda20b:32af7c90:c7ee61eb > > > > root@diamond:~# mdadm -Asf /dev/md1 -u fa32e2c5:e7bda20b:32af7c90:c7ee61eb > mdadm: metadata format 01.02 unknown, ignored. > mdadm: metadata format 00.90 unknown, ignored. > mdadm: no devices found for /dev/md1 Odd. I the above change to mdadm.conf doesn't help, try rerunning this command with --verbose and report the result. NeilBrown > root@diamond:~# > > Didn't seem to help. > Any other ideas? > Thanks > -Bryan
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