Someone

POWER FAILURE DRIVE

root@dots:~# mdadm --examine /dev/sdg
/dev/sdg:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x4
     Array UUID : 7f586e0f:281a4977:475276b1:2ab0d82b
           Name : shooter:0
  Creation Time : Sat Dec 25 22:04:49 2010
     Raid Level : raid6
   Raid Devices : 6

 Avail Dev Size : 3907027120 (1863.02 GiB 2000.40 GB)
     Array Size : 15628107776 (7452.06 GiB 8001.59 GB)
  Used Dev Size : 3907026944 (1863.02 GiB 2000.40 GB)
    Data Offset : 2048 sectors
   Super Offset : 8 sectors
          State : clean
    Device UUID : e6593e77:d49a973e:f449e421:c4dd9318

  Reshape pos'n : 2193338368 (2091.73 GiB 2245.98 GB)
  Delta Devices : 1 (5->6)
     New Layout : left-symmetric

    Update Time : Wed Jan 12 00:58:25 2011
       Checksum : 18de895c - correct
         Events : 153684

         Layout : left-symmetric-6
     Chunk Size : 512K

   Device Role : spare
   Array State : AAAA.. ('A' == active, '.' == missing)


*********** NOT POWER FAILURE DRIVE


/dev/sdc:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : 5ca7119b:e14b92cc:0a85bc82:92d6ae58
           Name : dots:0  (local to host dots)
  Creation Time : Fri Mar  4 00:23:28 2011
     Raid Level : raid6
   Raid Devices : 9

 Avail Dev Size : 3907027120 (1863.02 GiB 2000.40 GB)
     Array Size : 27349145600 (13041.09 GiB 14002.76 GB)
  Used Dev Size : 3907020800 (1863.01 GiB 2000.39 GB)
    Data Offset : 2048 sectors
   Super Offset : 8 sectors
          State : clean
    Device UUID : 1b84b432:e8ac29b2:8bed72dc:7d106645

    Update Time : Wed May 25 12:47:48 2011
       Checksum : 3193c22d - correct
         Events : 129296

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 4
   Array State : ....AAAAA ('A' == active, '.' == missing)
root@dots:~#