raid 5 cannot be assembled

[Jan Carrillo]

I have a raid 5 array with 4 250 G SATA HD's. Unfortunately I
experienced a recent power failure and 2 of the for raid drives were
off line. the SATA bay also gave another "sd" letter when the server
was rebooted.

I tried doing mdadm hot add but the raid array showed _UU_

I then stopped the raid array by issuing the commoand mdadm -S /dev/md2

When I tried to assemble back the raid device i using the command
mdadm -A /dev/md2 I get the message:

"mdadm: No suitable drives found for /dev/md2"

I don't know what to do. Can anyone help me please


I issued the command mdadm -E /dev/sd[eghi]1 and here is the output

/dev/sde1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : d4a147c5:e0becc25:016c505b:8cadcf3a
  Creation Time : Fri Sep 22 19:53:44 2006
     Raid Level : raid5
  Used Dev Size : 244195840 (232.88 GiB 250.06 GB)
     Array Size : 732587520 (698.65 GiB 750.17 GB)
   Raid Devices : 4
  Total Devices : 8
Preferred Minor : 2

    Update Time : Wed May 21 21:22:28 2008
          State : clean
 Active Devices : 2
Working Devices : 6
 Failed Devices : 3
  Spare Devices : 4
       Checksum : 8ae5afe5 - correct
         Events : 0.20144484

         Layout : left-symmetric
     Chunk Size : 128K

      Number   Major   Minor   RaidDevice State
this     5       8      145        5      spare   /dev/sdj1

   0     0       0        0        0      removed
   1     1       8       97        1      active sync   /dev/sdg1
   2     2       8      113        2      active sync   /dev/sdh1
   3     3       0        0        3      faulty removed
   4     4       8      177        4      spare   /dev/sdl1
   5     5       8      145        5      spare   /dev/sdj1
   6     6       8      193        6      spare   /dev/sdm1
   7     7       8      209        7      spare   /dev/sdn1
/dev/sdg1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : d4a147c5:e0becc25:016c505b:8cadcf3a
  Creation Time : Fri Sep 22 19:53:44 2006
     Raid Level : raid5
  Used Dev Size : 244195840 (232.88 GiB 250.06 GB)
     Array Size : 732587520 (698.65 GiB 750.17 GB)
   Raid Devices : 4
  Total Devices : 8
Preferred Minor : 2

    Update Time : Wed May 21 21:22:28 2008
          State : clean
 Active Devices : 2
Working Devices : 6
 Failed Devices : 3
  Spare Devices : 4
       Checksum : 8ae5b003 - correct
         Events : 0.20144484

         Layout : left-symmetric
     Chunk Size : 128K

      Number   Major   Minor   RaidDevice State
this     4       8      177        4      spare   /dev/sdl1

   0     0       0        0        0      removed
   1     1       8       97        1      active sync   /dev/sdg1
   2     2       8      113        2      active sync   /dev/sdh1
   3     3       0        0        3      faulty removed
   4     4       8      177        4      spare   /dev/sdl1
   5     5       8      145        5      spare   /dev/sdj1
   6     6       8      193        6      spare   /dev/sdm1
   7     7       8      209        7      spare   /dev/sdn1
/dev/sdh1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : d4a147c5:e0becc25:016c505b:8cadcf3a
  Creation Time : Fri Sep 22 19:53:44 2006
     Raid Level : raid5
  Used Dev Size : 244195840 (232.88 GiB 250.06 GB)
     Array Size : 732587520 (698.65 GiB 750.17 GB)
   Raid Devices : 4
  Total Devices : 8
Preferred Minor : 2

    Update Time : Wed May 21 21:22:28 2008
          State : clean
 Active Devices : 2
Working Devices : 6
 Failed Devices : 3
  Spare Devices : 4
       Checksum : 8ae5b017 - correct
         Events : 0.20144484

         Layout : left-symmetric
     Chunk Size : 128K

      Number   Major   Minor   RaidDevice State
this     6       8      193        6      spare   /dev/sdm1

   0     0       0        0        0      removed
   1     1       8       97        1      active sync   /dev/sdg1
   2     2       8      113        2      active sync   /dev/sdh1
   3     3       0        0        3      faulty removed
   4     4       8      177        4      spare   /dev/sdl1
   5     5       8      145        5      spare   /dev/sdj1
   6     6       8      193        6      spare   /dev/sdm1
   7     7       8      209        7      spare   /dev/sdn1
/dev/sdi1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : d4a147c5:e0becc25:016c505b:8cadcf3a
  Creation Time : Fri Sep 22 19:53:44 2006
     Raid Level : raid5
  Used Dev Size : 244195840 (232.88 GiB 250.06 GB)
     Array Size : 732587520 (698.65 GiB 750.17 GB)
   Raid Devices : 4
  Total Devices : 8
Preferred Minor : 2

    Update Time : Wed May 21 21:22:28 2008
          State : clean
 Active Devices : 2
Working Devices : 6
 Failed Devices : 3
  Spare Devices : 4
       Checksum : 8ae5b029 - correct
         Events : 0.20144484

         Layout : left-symmetric
     Chunk Size : 128K

      Number   Major   Minor   RaidDevice State
this     7       8      209        7      spare   /dev/sdn1

   0     0       0        0        0      removed
   1     1       8       97        1      active sync   /dev/sdg1
   2     2       8      113        2      active sync   /dev/sdh1
   3     3       0        0        3      faulty removed
   4     4       8      177        4      spare   /dev/sdl1
   5     5       8      145        5      spare   /dev/sdj1
   6     6       8      193        6      spare   /dev/sdm1
   7     7       8      209        7      spare   /dev/sdn1
--
To unsubscribe from this list: send the line "unsubscribe linux-net" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html