On 10/11/17 03:09, Jun-Kai Teoh wrote:

Hi all,

I managed to get my RAID drive back up, content looks like it's still
there, but it's not resyncing or reshaping and my parity drive was
removed (I did it when I tried to get it back up).

So what should I do now? I'm afraid of doing anything else at this point.

/dev/md126:
        Version : 1.2
  Creation Time : Thu Jun 30 07:57:36 2016
     Raid Level : raid5
     Array Size : 23441323008 (22355.39 GiB 24003.91 GB)
  Used Dev Size : 3906887168 (3725.90 GiB 4000.65 GB)
   Raid Devices : 8
  Total Devices : 7
    Persistence : Superblock is persistent

  Intent Bitmap : Internal

    Update Time : Thu Nov  9 18:57:18 2017
          State : clean, FAILED
 Active Devices : 6
Working Devices : 7
 Failed Devices : 0
  Spare Devices : 1

         Layout : left-symmetric
     Chunk Size : 512K

  Delta Devices : 1, (7->8)

           Name : livingrm-server:2  (local to host livingrm-server)
           UUID : f7333d4f:8300969d:55148d64:93c8afc8
         Events : 650582

    Number   Major   Minor   RaidDevice State
       0       8      112        0      active sync   /dev/sdh
       1       8       48        1      active sync   /dev/sdd
       7       8       64        2      spare rebuilding   /dev/sde
       3       8       96        3      active sync   /dev/sdg
       4       8       32        4      active sync   /dev/sdc
       5       8       80        5      active sync   /dev/sdf
       6       8       16        6      active sync   /dev/sdb
      14       0        0       14      removed

Okay. I was hoping someone else would chime in, but I'd say this looks
well promising. You have seven drives of eight so you have no redundancy :-(

You say your data is still there - does that mean you've mounted it, and
it looks okay?

sde is rebuilding, which means the array is sorting itself out.

You need that eighth drive. If a fsck says you have no (or almost no)
filesystem corruption, and you have a known-good drive, add it in. The
array will then sort itself out.

I would NOT recommend mounting it read-write until it comes back and
says "eight drives of eight working".

Cheers,
Wol