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rajzmailbox 08-24-2012 01:42 PM
RAID5 not active
 
Hi,

We had a power failure and since then my RAID array is not coming up. I am using OpenSUSE 10.3
When I try to mount it
Code:
# mount /dev/md3 /nativ
mount: you must specify the filesystem type
Code:
# mdadm --detail /dev/md3
mdadm: md device /dev/md3 does not appear to be active.
fdsik -l
Code:
# fdisk -l

Disk /dev/sda: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0009d7e4

  Device Boot      Start        End      Blocks  Id  System
/dev/sda1              1        3134    25173823+  fd  Linux raid autodetect
/dev/sda2  *        3135      14593    92044417+  fd  Linux raid autodetect

Disk /dev/sdb: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000b4651

  Device Boot      Start        End      Blocks  Id  System
/dev/sdb1              1        3134    25173823+  fd  Linux raid autodetect
/dev/sdb2            3135      14593    92044417+  fd  Linux raid autodetect

Disk /dev/md1: 94.2 GB, 94253408256 bytes
2 heads, 4 sectors/track, 23011086 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk identifier: 0x00000000

Disk /dev/md1 doesn't contain a valid partition table

Disk /dev/md0: 25.7 GB, 25777917952 bytes
2 heads, 4 sectors/track, 6293437 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk identifier: 0x00000000

Disk /dev/md0 doesn't contain a valid partition table

Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000d3e99

  Device Boot      Start        End      Blocks  Id  System
/dev/sdc1              1      121601  976760001  fd  Linux raid autodetect

Disk /dev/sdd: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x5c2face6

  Device Boot      Start        End      Blocks  Id  System
/dev/sdd1              1      121601  976760001  fd  Linux raid autodetect

Disk /dev/sde: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000001

  Device Boot      Start        End      Blocks  Id  System
/dev/sde1              1      121601  976760001  fd  Linux raid autodetect

Disk /dev/sdf: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000d272b

  Device Boot      Start        End      Blocks  Id  System
/dev/sdf1              1      121601  976760001  83  Linux

Disk /dev/sdg: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0003805f

  Device Boot      Start        End      Blocks  Id  System
/dev/sdg1              1      121601  976760001  fd  Linux raid autodetect

Disk /dev/sdh: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000e6da1

  Device Boot      Start        End      Blocks  Id  System
/dev/sdh1              1      121601  976760001  fd  Linux raid autodetect

Disk /dev/sdi: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x5c2facf2

  Device Boot      Start        End      Blocks  Id  System
/dev/sdi1              1      121601  976760001  fd  Linux raid autodetect

Disk /dev/sdj: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000b6b5b

  Device Boot      Start        End      Blocks  Id  System
/dev/sdj1              1      121601  976760001  fd  Linux raid autodetect

Disk /dev/sdk: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0003ac92

  Device Boot      Start        End      Blocks  Id  System
/dev/sdk1              2      121601  976752000  83  Linux
/dev/sdk4              1          1          0+  ee  EFI GPT

Partition table entries are not in disk order
Please help me getting this backing working.
let me know if you need more info

Thank you.

maniannam 08-25-2012 06:16 AM
Hello
Provide the /proc/mdstat file output



Regards
Manianna

rajzmailbox 08-25-2012 10:42 AM
Hello Manianna,

the output of /proc/mdstat

Code:
# cat /proc/mdstat
Personalities : [raid1] [raid0] [raid6] [raid5] [raid4]
md0 : active(auto-read-only) raid1 sda1[0] sdb1[2]
      25173748 blocks super 1.0 [2/2] [UU]
      bitmap: 0/193 pages [0KB], 64KB chunk

md1 : active raid1 sda2[2] sdb2[1]
      92044344 blocks super 1.0 [2/2] [UU]
      bitmap: 8/176 pages [32KB], 256KB chunk

unused devices: <none>
Thank You

maniannam 08-26-2012 02:40 PM
Hello,

based on your mdstat file output, I think there is no md3. anyway try to do examine the md3. "mdadm --examine <device name>"

Thanks.

whizje 08-26-2012 04:29 PM
What is the output of
Code:
mdadm -E /dev/sd[c-j]1

rajzmailbox 08-27-2012 11:45 AM
mdadm --examine /dev/md3
Code:
# mdadm --examine /dev/md3
mdadm: No md superblock detected on /dev/md3.
output of mdadm -E /dev/sd[c-j]1
Code:
# mdadm -E /dev/sd[c-j]1
/dev/sdc1:
          Magic : a92b4efc
        Version : 01
    Feature Map : 0x1
    Array UUID : ff736409:5b1a6101:0f1f75c0:529a4f95
          Name : 3
  Creation Time : Sun Oct 23 16:04:53 2011
    Raid Level : raid5
  Raid Devices : 8

  Used Dev Size : 1953519728 (931.51 GiB 1000.20 GB)
    Array Size : 13674637312 (6520.58 GiB 7001.41 GB)
      Used Size : 1953519616 (931.51 GiB 1000.20 GB)
  Super Offset : 1953519984 sectors
          State : clean
    Device UUID : 4d73af4d:a357a2b8:188c9bf9:f473090d

Internal Bitmap : -234 sectors from superblock
    Update Time : Thu Mar 29 17:00:31 2012
      Checksum : 1219e0a6 - correct
        Events : 71212

        Layout : left-symmetric
    Chunk Size : 128K

    Array Slot : 4 (0, 1, 2, failed, 4, 5, 6, failed)
  Array State : uuu_Uuu_ 2 failed
/dev/sdd1:
          Magic : a92b4efc
        Version : 01
    Feature Map : 0x1
    Array UUID : ff736409:5b1a6101:0f1f75c0:529a4f95
          Name : 3
  Creation Time : Sun Oct 23 16:04:53 2011
    Raid Level : raid5
  Raid Devices : 8

  Used Dev Size : 1953519728 (931.51 GiB 1000.20 GB)
    Array Size : 13674637312 (6520.58 GiB 7001.41 GB)
      Used Size : 1953519616 (931.51 GiB 1000.20 GB)
  Super Offset : 1953519984 sectors
          State : clean
    Device UUID : b7a550a8:e4965374:377ba95a:5b2ee41c

Internal Bitmap : -234 sectors from superblock
    Update Time : Thu Mar 29 17:00:31 2012
      Checksum : 9954fbd7 - correct
        Events : 71212

        Layout : left-symmetric
    Chunk Size : 128K

    Array Slot : 5 (0, 1, 2, failed, 4, 5, 6, failed)
  Array State : uuu_uUu_ 2 failed
/dev/sde1:
          Magic : a92b4efc
        Version : 01
    Feature Map : 0x1
    Array UUID : ff736409:5b1a6101:0f1f75c0:529a4f95
          Name : 3
  Creation Time : Sun Oct 23 16:04:53 2011
    Raid Level : raid5
  Raid Devices : 8

  Used Dev Size : 1953519728 (931.51 GiB 1000.20 GB)
    Array Size : 13674637312 (6520.58 GiB 7001.41 GB)
      Used Size : 1953519616 (931.51 GiB 1000.20 GB)
  Super Offset : 1953519984 sectors
          State : clean
    Device UUID : c498b8f9:f6825ca1:dddace09:1a04adbd

Internal Bitmap : -234 sectors from superblock
    Update Time : Thu Mar 29 17:00:31 2012
      Checksum : 67b4105d - correct
        Events : 71212

        Layout : left-symmetric
    Chunk Size : 128K

    Array Slot : 6 (0, 1, 2, failed, 4, 5, 6, failed)
  Array State : uuu_uuU_ 2 failed
/dev/sdf1:
          Magic : a92b4efc
        Version : 01
    Feature Map : 0x1
    Array UUID : ff736409:5b1a6101:0f1f75c0:529a4f95
          Name : 3
  Creation Time : Sun Oct 23 16:04:53 2011
    Raid Level : raid5
  Raid Devices : 8

  Used Dev Size : 1953519728 (931.51 GiB 1000.20 GB)
    Array Size : 13674637312 (6520.58 GiB 7001.41 GB)
      Used Size : 1953519616 (931.51 GiB 1000.20 GB)
  Super Offset : 1953519984 sectors
          State : clean
    Device UUID : 75189995:fcb6fd82:dbb98c44:6e49b3c7

Internal Bitmap : -234 sectors from superblock
    Update Time : Thu Mar 29 17:00:31 2012
      Checksum : 29f9e868 - correct
        Events : 71212

        Layout : left-symmetric
    Chunk Size : 128K

    Array Slot : 8 (0, 1, 2, failed, 4, 5, 6, failed)
  Array State : uuu_uuu_ 2 failed
/dev/sdg1:
          Magic : a92b4efc
        Version : 01
    Feature Map : 0x1
    Array UUID : ff736409:5b1a6101:0f1f75c0:529a4f95
          Name : 3
  Creation Time : Sun Oct 23 16:04:53 2011
    Raid Level : raid5
  Raid Devices : 8

  Used Dev Size : 1953519728 (931.51 GiB 1000.20 GB)
    Array Size : 13674637312 (6520.58 GiB 7001.41 GB)
      Used Size : 1953519616 (931.51 GiB 1000.20 GB)
  Super Offset : 1953519984 sectors
          State : clean
    Device UUID : 542026c3:9991c88a:f967cb02:fad51719

Internal Bitmap : -234 sectors from superblock
    Update Time : Thu Mar 29 17:00:31 2012
      Checksum : 6ef50585 - correct
        Events : 71212

        Layout : left-symmetric
    Chunk Size : 128K

    Array Slot : 0 (0, 1, 2, failed, 4, 5, 6, failed)
  Array State : Uuu_uuu_ 2 failed
/dev/sdh1:
          Magic : a92b4efc
        Version : 01
    Feature Map : 0x1
    Array UUID : ff736409:5b1a6101:0f1f75c0:529a4f95
          Name : 3
  Creation Time : Sun Oct 23 16:04:53 2011
    Raid Level : raid5
  Raid Devices : 8

  Used Dev Size : 1953519728 (931.51 GiB 1000.20 GB)
    Array Size : 13674637312 (6520.58 GiB 7001.41 GB)
      Used Size : 1953519616 (931.51 GiB 1000.20 GB)
  Super Offset : 1953519984 sectors
          State : clean
    Device UUID : 436835f2:1a0f6b34:da9e1781:0fc37544

Internal Bitmap : -234 sectors from superblock
    Update Time : Thu Mar 29 17:00:31 2012
      Checksum : f150eeec - correct
        Events : 71212

        Layout : left-symmetric
    Chunk Size : 128K

    Array Slot : 1 (0, 1, 2, failed, 4, 5, 6, failed)
  Array State : uUu_uuu_ 2 failed
/dev/sdi1:
          Magic : a92b4efc
        Version : 01
    Feature Map : 0x1
    Array UUID : ff736409:5b1a6101:0f1f75c0:529a4f95
          Name : 3
  Creation Time : Sun Oct 23 16:04:53 2011
    Raid Level : raid5
  Raid Devices : 8

  Used Dev Size : 1953519728 (931.51 GiB 1000.20 GB)
    Array Size : 13674637312 (6520.58 GiB 7001.41 GB)
      Used Size : 1953519616 (931.51 GiB 1000.20 GB)
  Super Offset : 1953519984 sectors
          State : clean
    Device UUID : f60340dd:47f6aa79:5efb52ec:d8ef40fd

Internal Bitmap : -234 sectors from superblock
    Update Time : Thu Mar 29 17:00:31 2012
      Checksum : 45a1fb1c - correct
        Events : 71212

        Layout : left-symmetric
    Chunk Size : 128K

    Array Slot : 2 (0, 1, 2, failed, 4, 5, 6, failed)
  Array State : uuU_uuu_ 2 failed
/dev/sdj1:
          Magic : a92b4efc
        Version : 01
    Feature Map : 0x1
    Array UUID : ff736409:5b1a6101:0f1f75c0:529a4f95
          Name : 3
  Creation Time : Sun Oct 23 16:04:53 2011
    Raid Level : raid5
  Raid Devices : 8

  Used Dev Size : 1953519728 (931.51 GiB 1000.20 GB)
    Array Size : 13674637312 (6520.58 GiB 7001.41 GB)
      Used Size : 1953519616 (931.51 GiB 1000.20 GB)
  Super Offset : 1953519984 sectors
          State : clean
    Device UUID : 694c7e73:ca461d43:38165447:030c34ae

Internal Bitmap : -234 sectors from superblock
    Update Time : Thu Mar 29 17:00:31 2012
      Checksum : b146cb1c - correct
        Events : 71212

        Layout : left-symmetric
    Chunk Size : 128K

    Array Slot : 9 (0, 1, 2, failed, 4, 5, 6, failed)
  Array State : uuu_uuu_ 2 failed

whizje 08-27-2012 12:47 PM
What you could try is
Code:
mdadm --assemble /dev/md3 --scan --force

rajzmailbox 08-27-2012 02:08 PM
the output of mdadm --assemble /dev/md3 --scan --force

Code:
# mdadm --assemble /dev/md3 --scan --force
mdadm: /dev/md3 assembled from 6 drives and 2 spares - not enough to start the array.
This problem is driving me crazy. Here is what happened. about a month ago A colleague of mine has unknowningly pulled a HDD and placed it back and also added a new one when the system was ON/active. Could this cause the problem? All the while I thought it was due to power failure. Could you please help me fix this?

eantoranz 08-28-2012 01:09 AM
Hey..... I guess you could try this as a last resort:

http://www.freesoftwaremagazine.com/.../recovery_raid
https://code.launchpad.net/~eantoran...k/raidpycovery

whizje 08-28-2012 02:42 PM
There is another option with which you have to recreate your array, but it is risky so I advice you to subscribe to the linux-raid mailinglist by sending a mail to mailto:majordomo@vger.kernel.org?body=subscribe linux-raid and ask there for your best options. It is best to also send output of mdadm -E /dev/sd[c-j]1 there. The creator of mdadm is also often there and they can tell you what you have to do to save your raid array.

rajzmailbox 08-30-2012 06:18 PM
at last my raid has become active but not started and is degraded
Code:
# mdadm --detail /dev/md3
/dev/md3:
        Version : 01.00.03
  Creation Time : Sun Oct 23 16:04:53 2011
    Raid Level : raid5
  Used Dev Size : 976759808 (931.51 GiB 1000.20 GB)
  Raid Devices : 8
  Total Devices : 8
Preferred Minor : 3
    Persistence : Superblock is persistent

    Update Time : Thu Mar 29 17:00:31 2012
          State : active, degraded, Not Started
 Active Devices : 6
Working Devices : 8
 Failed Devices : 0
  Spare Devices : 2

        Layout : left-symmetric
    Chunk Size : 128K

          Name : 3
          UUID : ff736409:5b1a6101:0f1f75c0:529a4f95
        Events : 71212

    Number  Major  Minor  RaidDevice State
      0      8      241        0      active sync  /dev/sdp1
      1      65        1        1      active sync  /dev/sdq1
      2      65      17        2      active sync  /dev/sdr1
      3      0        0        3      removed
      4      8      177        4      active sync  /dev/sdl1
      5      8      193        5      active sync  /dev/sdm1
      6      8      209        6      active sync  /dev/sdn1
      7      0        0        7      removed

      8      8      33        -      spare  /dev/sdc1
      10      65      48        -      spare  /dev/sdt
What should I be doing next to get it working?

Thank you


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