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28 October 2010, 20:45 UTC

I'm having issues trying to convert a raid 5 to a raid 6 array. I've got a hot spare in the raid 5 config and the array is clean. Each drive is 1T. I haven't been able to find anything specific to this in my searching. Any help would be appreciated. Thanks. #mdadm --grow /dev/md2 --level=6 --raid-disks=6 --backup-file=/home/md.backup mdadm: /dev/md2: could not set level to raid6 #mdadm --version mdadm - v3.1.4 - 31st August 2010 #cat /proc/mdstat Personalities : [raid1] [raid6] [raid5] [raid4] md2 : active raid5 sda1[3] sdb1[4] sdc1[5](S) sdd1[2] sde1[1] sdf1[0] 3907039744 blocks level 5, 128k chunk, algorithm 2 [5/5] [uuuuu] #mdadm --detail /dev/md2 /dev/md2: Version : 0.90 Creation Time : Sat Aug 7 23:22:28 2010 Raid Level : raid5 Array Size : 3907039744 (3726.04 GiB 4000.81 GB) Used Dev Size : 976759936 (931.51 GiB 1000.20 GB) Raid Devices : 5 Total Devices : 6 Preferred Minor : 2 Persistence : Superblock is persistent Update Time : Thu Oct 28 16:00:16 2010 State : clean Active Devices : 5 Working Devices : 6 Failed Devices : 0 Spare Devices : 1 Layout : left-symmetric Chunk Size : 128K UUID : ff4ec8ee:95d2230f:84fc2b17:ec59dd3f Events : 0.641774 Number Major Minor RaidDevice State 0 8 81 0 active sync /dev/sdf1 1 8 65 1 active sync /dev/sde1 2 8 49 2 active sync /dev/sdd1 3 8 1 3 active sync /dev/sda1 4 8 17 4 active sync /dev/sdb1 5 8 33 - spare /dev/sdc1









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