(original article)

Re: Converting RAID5 to RAID6 and other shape changing in md/raid

11 June 2010, 06:33 UTC

Here are the stats:

/dev/md0: Version : 0.91 Creation Time : Mon May 30 03:29:47 2005 Raid Level : raid6 Array Size : 1462862592 (1395.09 GiB 1497.97 GB) Used Dev Size : 487620864 (465.03 GiB 499.32 GB) Raid Devices : 8 Total Devices : 8 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Thu Jun 10 19:15:18 2010 State : clean, FAILED Active Devices : 5 Working Devices : 6 Failed Devices : 2 Spare Devices : 1 Layout : left-symmetric-6 Chunk Size : 64K Delta Devices : 3, (5->8) New Layout : left-symmetric UUID : e2ebff64:c0d9f90e:4bd6122a:78a10948 Events : 0.34221 Number Major Minor RaidDevice State 0 8 83 0 active sync /dev/sdf3 1 8 99 1 active sync /dev/sdg3 2 8 115 2 active sync /dev/sdh3 3 8 131 3 active sync /dev/sdi3 4 8 64 4 spare rebuilding /dev/sde 5 8 48 5 active sync /dev/sdd 8 8 32 6 faulty spare rebuilding /dev/sdc 9 8 16 7 faulty spare rebuilding /dev/sdb

and /proc/mdstat

Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid6 sde[4] sdd[5] sdc[8](F) sdb[9](F) sdg3[1] sdi3[3] sdf3[0] sdh3[2] 1462862592 blocks super 0.91 level 6, 64k chunk, algorithm 18 [8/5] [UUUU_U__]

To me it means nothing. Seems like it says it's good, but it's bad. Kind of like a pint of ice cream.




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