On Mon Dec 21, 2009 at 03:41:33AM +0000, Kristleifur Daðason wrote: > Hi all, > > I wish to convert my 3-drive RAID-5 array to a 6-drive RAID-6. I'm on > Linux 2.6.32.2 and have mdadm version 3.1.1 with the 32-bit-array-size > patch from here: http://osdir.com/ml/linux-raid/2009-11/msg00534.html > > I have three live drives and three spares added to the array. When I > initialize the command, mdadm does the initial checks and aborts with > a "cannot set device shape" without doing anything to the array. > > $ mdadm --grow /dev/md_d1 --level=6 --raid-devices=6 > --backup-file=/root/backup.md1_to_r6 > mdadm: metadata format 1.10 unknown, ignored. > mdadm: metadata format 1.10 unknown, ignored. > mdadm level of /dev/md_d1 changed to raid6 > mdadm: Need to backup 1024K of critical section.. > mdadm: Cannot set device shape for /dev/md_d1 > mdadm: aborting level change > I don't think you can grow and reshape simultaneously. I think you'll need to do this as two operations - either grow to a 5 disk RAID5 then reshape to a 6 disk RAID6, or reshape to a 4 disk RAID6 then grow. Cheers, Robin -- ___ ( ' } | Robin Hill <robin@xxxxxxxxxxxxxxx> | / / ) | Little Jim says .... | // !! | "He fallen in de water !!" |
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