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. > > /proc/mdstat shows this > > md1 : inactive sdp1[11](S) sdi1[3](S) sdd1[7](S) sdr1[13](S) > sdg1[1](S) sdc1[6](S) sdq1[12](S) sdn1[9](S) sdo1[10](S) sdh1[2](S) > sda1[4](S) sdf1[0](S) sdb1[8](S) > 25395674609 blocks super 1.2 > > > If I look at mdadm -E /dev/sdX1 I see most are State active, while > some are State clean. > > > root@diamond:~# mdadm -E /dev/sd[abcdfghinopqr]1 > mdadm: metadata format 01.02 unknown, ignored. > mdadm: metadata format 00.90 unknown, ignored. Hmmm... what do you have in /etc/mdadm.conf?? > > Is there anything I can do to get the array back up? stg1 is the device that failed. so mdadm -S /dev/md1 mdadm -A -f /dev/md1 /dev/sd[abcdefhinopqr]1 should start the array. Though if the names have changed at all it would be safer to do mdadm -Asf /dev/md1 -u fa32e2c5:e7bda20b:32af7c90:c7ee61eb then mdadm will find the right devices and use them. When reshape finishes you will need to add sdg1 or a replacement and let it recover. NeilBrown
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