On 20 Feb 2017, at 20:01, Wols Lists [off-list ref] wrote:

quoted

You can try "--assemble --force". It sounds like you might well get away
with it.

Would it be possible to start the array by adding sdk1 (setting state as active) and resetting the state of sdm1? The array failed while i was copying stuff to another place ...

With —assemble —force i get this:


mdadm --detail /dev/md0
/dev/md0:
        Version : 1.2
  Creation Time : Sun Sep 18 22:46:42 2016
     Raid Level : raid6
  Used Dev Size : -1
   Raid Devices : 36
  Total Devices : 35
    Persistence : Superblock is persistent

    Update Time : Wed Feb 15 14:08:28 2017
          State : active, FAILED, Not Started
 Active Devices : 33
Working Devices : 35
 Failed Devices : 0
  Spare Devices : 2

         Layout : left-symmetric
     Chunk Size : 512K

           Name : media-storage:0  (local to host media-storage)
           UUID : 5c7c227e:22de5fc1:ca3ebb65:9c283567
         Events : 140559

    Number   Major   Minor   RaidDevice State
       0       8        1        0      active sync   /dev/sda1
       1       8       17        1      active sync   /dev/sdb1
       2       8       33        2      active sync   /dev/sdc1
       3       8       49        3      active sync   /dev/sdd1
       4       8       65        4      active sync   /dev/sde1
       5       8       81        5      active sync   /dev/sdf1
       6       8       97        6      active sync   /dev/sdg1
      14       0        0       14      removed
       8       8      129        8      active sync   /dev/sdi1
       9       8      145        9      active sync   /dev/sdj1
      20       0        0       20      removed
      39       8      177       11      active sync   /dev/sdl1
      12       8      193       12      spare rebuilding   /dev/sdm1
      13       8      209       13      active sync   /dev/sdn1
      14       8      225       14      active sync   /dev/sdo1
      40       8      241       15      active sync   /dev/sdp1
      16      65        1       16      active sync   /dev/sdq1
      17      65       17       17      active sync   /dev/sdr1
      18      65       33       18      active sync   /dev/sds1
      19      65       49       19      active sync   /dev/sdt1
      20      65       65       20      active sync   /dev/sdu1
      21      65       81       21      active sync   /dev/sdv1
      22      65       97       22      active sync   /dev/sdw1
      43      65      113       23      active sync   /dev/sdx1
      36      65      129       24      active sync   /dev/sdy1
      25      65      145       25      active sync   /dev/sdz1
      41      65      161       26      active sync   /dev/sdaa1
      27      65      177       27      active sync   /dev/sdab1
      28      65      193       28      active sync   /dev/sdac1
      37      65      209       29      active sync   /dev/sdad1
      38      65      225       30      active sync   /dev/sdae1
      42      65      241       31      active sync   /dev/sdaf1
      32      66        1       32      active sync   /dev/sdag1
      33      66       17       33      active sync   /dev/sdah1
      34      66       33       34      active sync   /dev/sdai1
      35      66       49       35      active sync   /dev/sdaj1

      44       8      161        -      spare   /dev/sdk1




Cheers
Martin