I have a RAID60 that I want to expand. The current setup is: 2 axles each having 9 disks + 2 spares. The future wanted setup is: 4 axles each having 10 disks + 1 spare. So I need to do some --grow to reshape the drives. I thought this would be enough: mdadm -v --grow /dev/md1 --raid-devices=10 --backup-file=/root/back-md1 mdadm -v --grow /dev/md2 --raid-devices=10 --backup-file=/root/back-md2 mdadm -v --grow /dev/md0 --raid-devices=4 --add /dev/md3 /dev/md4 The last command works, but the 2 first commands fail with: mdadm: Need to backup 7168K of critical section.. mdadm: /dev/md2: Something wrong - reshape aborted How can I --grow a RAID6 to use more devices? Info about the system: $ mdadm --version mdadm - v3.2.5 - 18th May 2012 $ uname -r 3.5.0-17-generic This URL includes a Makefile to reproduce the problem: http://serverfault.com/questions/503832/linux-mdadm-grow-raid6-something-wrong-reshape-aborted /Ole -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
