方法一:
# cat /proc/mdstat

----------------------------------------------------
Personalities : [raid6] [raid5] [raid4]
md0 : active raid6 sdi[7] sdh[6] sdg[5] sdf[4] sde[3] sdd[2] sdc[1] sdb[0]
      11721086976 blocks level 6, 64k chunk, algorithm 2 [8/8] [UUUUUUUU]

unused devices: <none>
----------------------------------------------------

 

 

方法二:
# mdadm --detail /dev/md0

----------------------------------------------------

/dev/md0:
        Version : 0.90
  Creation Time : Thu Mar  1 16:02:23 2012
     Raid Level : raid6
     Array Size : 11721086976 (11178.10 GiB 12002.39 GB)
  Used Dev Size : 1953514496 (1863.02 GiB 2000.40 GB)
   Raid Devices : 8
  Total Devices : 8
Preferred Minor : 0
    Persistence : Superblock is persistent

    Update Time : Sat Mar  3 14:55:36 2012
          State : active
 Active Devices : 8
Working Devices : 8
 Failed Devices : 0
  Spare Devices : 0

     Chunk Size : 64K

           UUID : e284e7b9:99c901d0:f70f6018:f966ca9f
         Events : 0.3

    Number   Major   Minor   RaidDevice State
       0       8       16        0      active sync   /dev/sdb
       1       8       32        1      active sync   /dev/sdc
       2       8       48        2      active sync   /dev/sdd
       3       8       64        3      active sync   /dev/sde
       4       8       80        4      active sync   /dev/sdf
       5       8       96        5      active sync   /dev/sdg
       6       8      112        6      active sync   /dev/sdh
       7       8      128        7      active sync   /dev/sdi

----------------------------------------------------

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