(original article)

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

24 January 2010, 22:47 UTC

##### mdX : active raid5 sdd1[8](S) sdb1[7](S) sdf8[0] sdl8[4] sdk2[5] sdc1[6] sdj6[3] sdi8[1] . Y blocks super 1.1 level 5, 128k chunk, algorithm 2 [6/6] [uuuuuu] # mdadm --grow /dev/mdX --level=6 --raid-devices=8 --backup-file=/root/mdX.backupfile mdX : active raid6 sdd1[8] sdb1[7] sdf8[0] sdl8[4] sdk2[5] sdc1[6] sdj6[3] sdi8[1] . Y blocks super 1.1 level 6, 128k chunk, algorithm 18 [8/9] [uuuuuu_u] . [>....................] reshape = 0.0% (33920/484971520) finish=952.6min speed=8480K/sec Nooo mdadm 3.1.1 I wanted an 8 device raid-6 Why do you show 9? -- update What is it showing me now??? blocks super 1.1 level 6, 128k chunk, algorithm 2 [8/10] [uuuuuuuu] mdadm --detail /dev/mdX /dev/mdX: . Version : 1.01 . Raid Level : raid6 . Array Size : 6z () . Used Dev Size : z () . Raid Devices : 8 . Total Devices : 8 . Persistence : Superblock is persistent . Update Time : Sun Jan 24 14:40:32 2010 . State : clean .Active Devices : 8 Working Devices : 8 .Failed Devices : 0 . Spare Devices : 0 . Layout : left-symmetric . Chunk Size : 128K . Number Major Minor RaidDevice State . 0 8 . 0 active sync /dev/sdf . 1 8 . 1 active sync /dev/sdi . 3 8 . 2 active sync /dev/sdj . 6 8 . 3 active sync /dev/sdc . 5 8 . 4 active sync /dev/sdk . 4 8 . 5 active sync /dev/sdl . 8 8 . 6 active sync /dev/sdd . 7 8 . 7 active sync /dev/sdb ... Did it actually do what I want but just show me the wrong result with kernel 2.6.32-gentoo-r2



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