From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Burgess Subject: reshape changing chunk size won't restart Date: Tue, 21 Dec 2010 12:01:37 -0800 Message-ID: <1292961697.20216.0@athlon> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; DelSp=Yes; Format=Flowed Content-Transfer-Encoding: 8BIT Return-path: Content-Disposition: inline Sender: linux-raid-owner@vger.kernel.org To: linux raid mailing list List-Id: linux-raid.ids mdadm 3.14 kernel 2.6.35.8 I started a reshape changing chunk size and after it ran for a while i realized the disk i used for the backup file was slow so I killed the mdadm running in the background and tried to restart with the new location (i moved the file just in case) mdadm /dev/md5 --grow --chunk=8 --backup-file=/my/raid/RAID_BACKUP_FILE it complains: mdadm: /dev/md5 is performing resync/recovery and cannot be reshaped /proc/mdstat for md5 shows partial progress but the numbers don't change (except finish grows): md5 : active raid6 sdd1[2] sdf1[8] sdc1[1] sdb1[0] sdh1[4] sdl1[5] sdj1[3] sdg1[7] sdk1[6] 13674583552 blocks super 0.91 level 6, 128k chunk, algorithm 2 [9/9] [UUUUUUUUU] [>....................] reshape = 0.1% (2715648/1953511936) finish=850711.5min speed=38K/sec The mdadm 3.14 is freshly compiled. I started the reshape with mdadm 3.13. I didn't try rebooting as the filesystem is mounted and the data seems ok. Didn't want to make things worse... Thank you for any help