root@dom0:/home/thu# mdadm --detail /dev/md127
/dev/md127:
        Version : 0.90
  Creation Time : Sat Jan 24 14:16:52 2009
     Raid Level : raid6
  Used Dev Size : 1465138432 (1397.26 GiB 1500.30 GB)
   Raid Devices : 11
  Total Devices : 8
Preferred Minor : 127
    Persistence : Superblock is persistent

    Update Time : Sat Jul 28 22:43:50 2012
          State : active, FAILED, Not Started
 Active Devices : 8
Working Devices : 8
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 128K

           UUID : 90e38944:82a0dd2d:c6619b65:eace9c87 (local to host dom0)
         Events : 0.609309

    Number   Major   Minor   RaidDevice State
       0       8       32        0      active sync   /dev/sdc
       1       0        0        1      removed
       2       0        0        2      removed
       3       8       64        3      active sync   /dev/sde
       4       8       48        4      active sync   /dev/sdd
       5       0        0        5      removed
       6       8       80        6      active sync   /dev/sdf
       7       8      176        7      active sync   /dev/sdl
       8       8      112        8      active sync   /dev/sdh
       9       8       96        9      active sync   /dev/sdg
      10       8       16       10      active sync   /dev/sdb






root@dom0:/home/thu# mdadm --assemble --update=uuid /dev/md0 /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh /dev/sdi /dev/sdj /dev/sdk /dev/sdl
mdadm: /dev/md0 has been started with 11 drives.
root@dom0:/home/thu# mdadm --detail /dev/md0
/dev/md0:
        Version : 0.90
  Creation Time : Sat Jan 24 14:16:52 2009
     Raid Level : raid6
     Array Size : 13186245888 (12575.38 GiB 13502.72 GB)
  Used Dev Size : 1465138432 (1397.26 GiB 1500.30 GB)
   Raid Devices : 11
  Total Devices : 11
Preferred Minor : 0
    Persistence : Superblock is persistent

    Update Time : Sat Jul 28 22:43:50 2012
          State : clean
 Active Devices : 11
Working Devices : 11
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 128K

           UUID : 7957ee15:f1537981:c6619b65:eace9c87 (local to host dom0)
         Events : 0.609309

    Number   Major   Minor   RaidDevice State
       0       8       32        0      active sync   /dev/sdc
       1       8      160        1      active sync   /dev/sdk
       2       8      144        2      active sync   /dev/sdj
       3       8       64        3      active sync   /dev/sde
       4       8       48        4      active sync   /dev/sdd
       5       8      128        5      active sync   /dev/sdi
       6       8       80        6      active sync   /dev/sdf
       7       8      176        7      active sync   /dev/sdl
       8       8      112        8      active sync   /dev/sdh
       9       8       96        9      active sync   /dev/sdg
      10       8       16       10      active sync   /dev/sdb