Miscellany

# mdadm -D /dev/md0
/dev/md0:
        Version : 1.2
  Creation Time : Thu Jan 12 13:01:30 2012
     Raid Level : raid5
     Array Size : 13674572800 (13041.09 GiB 14002.76 GB)
  Used Dev Size : 1953510400 (1863.01 GiB 2000.39 GB)
   Raid Devices : 8
  Total Devices : 8
    Persistence : Superblock is persistent

    Update Time : Thu Jan 12 17:12:41 2012
          State : clean, degraded, recovering
 Active Devices : 7
Working Devices : 8
 Failed Devices : 0
  Spare Devices : 1

         Layout : left-symmetric
     Chunk Size : 512K

 Rebuild Status : 21% complete

           Name : xxx:0  (local to host xxx)
           UUID : 3ad5140b:e665dd46:a19fc4b4:092a493f
         Events : 22

    Number   Major   Minor   RaidDevice State
       0       8        1        0      active sync   /dev/sda1
       1       8       17        1      active sync   /dev/sdb1
       2       8       33        2      active sync   /dev/sdc1
       3       8       49        3      active sync   /dev/sdd1
       4       8       65        4      active sync   /dev/sde1
       5       8       97        5      active sync   /dev/sdg1
       6       8      113        6      active sync   /dev/sdh1
       8       8      129        7      spare rebuilding   /dev/sdi1