# More information on linux raid partition problem

- From: d c \<hidden\>
- Date: 2016-02-18 16:12:11 
- List: linux-raid
- Page: https://ratatoskr.run/linux-raid/2016/02/6631612
- Thread: https://ratatoskr.run/linux-raid/2016/02/6631612/t.md

```text
For anyone who can help me here is some more information on my linux
raid partition problem.

As stated before, I only have two disks from a three disk raid 5.

When I try:

     mdadm --assemble /dev/md0 /dev/hdd2 /dev/hde2

I get the following error:

     mdadm: cannot open device /dev/hdd2: No such file or directory
     mdadm: /dev/hdd2 has no superblock - assembly aborted

When I do a mdadm examine, I get a different number of events:

     mdadm --examine /dev/sdd2 | egrep Event
          Events : 60541
     mdadm --examine /dev/sde2 | egrep Event
          Events : 60544

Also mdadm examine gives different States:

     mdadm --examine /dev/sdd2 | egrep State
          State : active
     mdadm --examine /dev/sde2 | egrep State
          State : clean

But mdadm shows that their Magic and UUID numbers are the same.

Can anyone give suggestions on how I can repair this?

Here are the full mdadm --examine outputs:

mdadm --examine  /dev/sdd2
/dev/sdd2:
          Magic : a92b4efc
        Version : 0.90.00
           UUID : 1787919b:a8648f43:ae108b15:09b5fb69
  Creation Time : Fri Jan  7 17:54:08 2005
     Raid Level : raid5
  Used Dev Size : 48194816 (45.96 GiB 49.35 GB)
     Array Size : 96389632 (91.92 GiB 98.70 GB)
   Raid Devices : 3
  Total Devices : 2
Preferred Minor : 126

    Update Time : Tue May  1 15:55:58 2012
          State : active
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0
       Checksum : b53ef3cf - correct
         Events : 60541

         Layout : left-symmetric
     Chunk Size : 128K

      Number   Major   Minor   RaidDevice State
this     2       8       66        2      active sync   /dev/sde2

   0     0       0        0        0      removed
   1     1       8       50        1      active sync   /dev/sdd2
   2     2       8       66        2      active sync   /dev/sde2

mdadm --examine  /dev/sde2
/dev/sde2:
          Magic : a92b4efc
        Version : 0.90.00
           UUID : 1787919b:a8648f43:ae108b15:09b5fb69
  Creation Time : Fri Jan  7 17:54:08 2005
     Raid Level : raid5
  Used Dev Size : 48194816 (45.96 GiB 49.35 GB)
     Array Size : 96389632 (91.92 GiB 98.70 GB)
   Raid Devices : 3
  Total Devices : 2
Preferred Minor : 126

    Update Time : Tue May  1 15:56:20 2012
          State : clean
 Active Devices : 1
Working Devices : 1
 Failed Devices : 1
  Spare Devices : 0
       Checksum : b53fe060 - correct
         Events : 60544

         Layout : left-symmetric
     Chunk Size : 128K

      Number   Major   Minor   RaidDevice State
this     1       8       50        1      active sync   /dev/sdd2

   0     0       0        0        0      removed
   1     1       8       50        1      active sync   /dev/sdd2
   2     2       0        0        2      faulty removed
```