From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Busby Subject: Unable to restart reshape Date: Sun, 30 Oct 2011 14:57:39 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids I have a system the was doing a reshape from RAID5 to 6, the system had to be powered off this morning and moved, upon restarting the server i issued the following command to continue the reshape mdadm -A /dev/md0 --backup-file=/home/md.backup i get back to following error mdadm: Failed to restore critical section for reshape, sorry. any idea why? before shutting down cat /proc/mdstat showed Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid6 sdf[0] sdb[6](S) sda[4] sdc[3] sde[2] sdd[1] 7814055936 blocks super 1.0 level 6, 512k chunk, algorithm 18 [6/5] [UUUUU_] [==============>......] reshape = 70.8% (1384415232/1953513984) finish=3658.6min speed=2592K/sec but now it shows Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : inactive sdc[3] sdb[6](S) sde[2] sdd[1] sdf[0] 9767572240 blocks super 1.0 i am totally confused, it seems to have lost a drive from the raid, and the number of blocks is incorrect