fishserver2 linux # mdadm --misc -D /dev/md127
/dev/md127:
        Version : 1.2
  Creation Time : Thu Oct 28 23:48:35 2010
     Raid Level : raid5
     Array Size : 10255942144 (9780.83 GiB 10502.08 GB)
  Used Dev Size : 1465134592 (1397.26 GiB 1500.30 GB)
   Raid Devices : 8
  Total Devices : 8
    Persistence : Superblock is persistent

    Update Time : Thu Oct 28 23:48:35 2010
          State : clean, degraded
 Active Devices : 7
Working Devices : 8
 Failed Devices : 0
  Spare Devices : 1

         Layout : left-symmetric
     Chunk Size : 512K

           Name : fishserver2:0  (local to host fishserver2)
           UUID : 2b300153:115c64fc:1ddf85e7:a15c6327
         Events : 1

    Number   Major   Minor   RaidDevice State
       0       8       17        0      active sync   /dev/sdb1
       1       8       33        1      active sync   /dev/sdc1
       2       8       49        2      active sync   /dev/sdd1
       3       8       65        3      active sync   /dev/sde1
       4       8       81        4      active sync   /dev/sdf1
       5       8       97        5      active sync   /dev/sdg1
       6       8      113        6      active sync   /dev/sdh1
       8       8      129        7      spare rebuilding   /dev/sdi1
fishserver2 linux # cat /proc/mdstat
Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md127 : active (auto-read-only) raid5 sdi1[8] sdh1[6] sdg1[5] sde1[3] sdf1[4] sdb1[0] sdc1[1] sdd1[2]
      10255942144 blocks super 1.2 level 5, 512k chunk, algorithm 2 [8/7] [UUUUUUU_]

unused devices: <none>