Lacie 5Big2 Failed After Firmware Update

[fvdw]

are the GUID now different for sdb and sdc ? (use command p in gdisk to print partition tables of both)

[Mijzelf]

So far we have two recognized raid members, right? sda and sdd. sdb and sdc are faulty, and I haven't seen sde yet.

[fvdw]

sde2 is also reported, and seemed to be ok

[fvdw]

here it is

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root@(none):/ # mdadm --examine /dev/sde2
/dev/sde2:
          Magic : a92b4efc
        Version : 1.0
    Feature Map : 0x0
     Array UUID : 4f4a8ea3:4c99b769:e18e6826:872bc27f
           Name : (none):4  (local to host (none))
  Creation Time : Thu Jan  1 00:00:39 1970
     Raid Level : raid5
   Raid Devices : 5

 Avail Dev Size : 1949474544 (929.58 GiB 998.13 GB)
     Array Size : 3898947584 (3718.33 GiB 3992.52 GB)
  Used Dev Size : 1949473792 (929.58 GiB 998.13 GB)
   Super Offset : 1949474800 sectors
          State : clean
    Device UUID : b7d90b31:1b4b0e9a:c3f998a6:fbe87a36

    Update Time : Tue Jun 18 10:35:58 2013
       Checksum : 55ce6f2e - correct
         Events : 51808

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 3
   Array State : AAAAA ('A' == active, '.' == missing)

should sde be active device 3 :scratch (ps my knowledge of raid is low...)

[fvdw]

does it matter if you swap disks in a raid array, I mean if unlucky has taken out the disk and put them back in a different order, would that be a problem ?

[fvdw]

also is it not the main purpose of having a raid array that you can loose a disk (or 2) without loosing the data ?

[unlucky1]

Yes they look different.

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Disk /dev/sdb: 1953525168 sectors, 931.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 5C7C3386-9367-3C4B-95F2-6B7403CA90CC
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1953525134
Partitions will be aligned on 2048-sector boundaries
Total free space is 4050285 sectors (1.9 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2         4048896      1953523711   929.6 GiB   8300  Linux filesystem

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Disk /dev/sdc: 1953525168 sectors, 931.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 00000000-3E94-0004-1835-0A000145C1BE
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1953525134
Partitions will be aligned on 2048-sector boundaries
Total free space is 4050285 sectors (1.9 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2         4048896      1953523711   929.6 GiB   8300  Linux filesystem

And yes, you can lose 1 disk and it should still function as normal. But.... and this was going to come up later. But I have an older Lacie 4 disk and when I lost a disk and replaced it, it scrambled the files so they were overwritten. So a christmas picture would be in a folder for summer with the filename of the summer picture so the summer picture was nowhere to be found. So I'm not so certain about that aspect of the raid....

[unlucky1]

oops, forgot to use /code in my hurry...

[unlucky1]

So you think sdc is broken?

[unlucky1]

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mdadm: No md superblock detected on /dev/sdc2