2Big Network 2, Hard disk 2 failed

[manelppa]

Here is the last result after the verbose cmd and then mdadm --detail /dev/md1

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root@fvdw-sta-kirkwood:/ # mdadm --detail /dev/md1
/dev/md1:
        Version : 0.90
  Creation Time : Fri Jan 27 19:45:42 2017
     Raid Level : raid1
     Array Size : 850304 (830.51 MiB 870.71 MB)
  Used Dev Size : 850304 (830.51 MiB 870.71 MB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 1
    Persistence : Superblock is persistent

    Update Time : Thu Jun  8 20:38:32 2017
          State : clean, degraded, recovering
 Active Devices : 1
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 1

 Rebuild Status : 0% complete

           UUID : 1c8ffb0e:2bb8a661:e368bf24:bd0fce41
         Events : 0.31

    Number   Major   Minor   RaidDevice State
       0       8        8        0      active sync   /dev/sda8
       2       8       24        1      spare rebuilding   /dev/sdb8
root@fvdw-sta-kirkwood:/ #


probably stupid remark : after each command I type like zero superblock or --add) I see the disk 1 flashing (disk at the left side); Is it normal ?

[Jocko]

That seems better. So post

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cat /proc/mdstat

and the recovery speed must be >0

With zero superblock it should not but it is normal with assemble,...,or add as the nas read from it to copying data on sdb (it is why it was useless to duplicate the first disk)

[manelppa]

last cat /proc/mdstat/

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root@fvdw-sta-kirkwood:/ # cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md1 : active raid1 sdb8[2](F) sda8[0]
      850304 blocks [2/1] [U_]
      [>....................]  recovery =  0.1% (1536/850304) finish=5924.4min speed=2K/sec
     
unused devices: <none>
root@fvdw-sta-kirkwood:/ #


[Jocko]

recovery speed is very slow :shocked

Post

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dmesg
cat /sys/block/md1/md/sync_speed_min
cat /sys/block/md1/md/sync_speed_max

and see also if the speed has increased by reading again /proc/mdstat

[manelppa]

it seems to be finished, I checked again by re-typing cat /proc/mdstat

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Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md1 : active raid1 sdb8[2](F) sda8[0]
      850304 blocks [2/1] [U_]
     
unused devices: <none>
root@fvdw-sta-kirkwood:/ #



[manelppa]

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root@fvdw-sta-kirkwood:/ # cat /sys/block/md1/md/sync_speed_min
1000 (system)
root@fvdw-sta-kirkwood:/ # cat /sys/block/md1/md/sync_speed_max
200000 (system)
root@fvdw-sta-kirkwood:/ #


Do I need to post the dozen pages after "dmesg" ?

[Jocko]

Post the previous commands I asked and also this one:

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mdadm --detail /dev/md1

It seems there is an issue with the disk2

Is it a new disk ?

[Jocko]

Do I need to post the dozen pages after "dmesg" ?

No only "last" page;

[manelppa]

No, it's the original disk II since the beginning of my trouble...
Here is the post of the --detail cmd

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root@fvdw-sta-kirkwood:/ # mdadm --detail /dev/md1
/dev/md1:
        Version : 0.90
  Creation Time : Fri Jan 27 19:45:42 2017
     Raid Level : raid1
     Array Size : 850304 (830.51 MiB 870.71 MB)
  Used Dev Size : 850304 (830.51 MiB 870.71 MB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 1
    Persistence : Superblock is persistent

    Update Time : Thu Jun  8 20:51:59 2017
          State : clean, degraded
 Active Devices : 1
Working Devices : 1
 Failed Devices : 1
  Spare Devices : 0

           UUID : 1c8ffb0e:2bb8a661:e368bf24:bd0fce41
         Events : 0.35

    Number   Major   Minor   RaidDevice State
       0       8        8        0      active sync   /dev/sda8
       1       0        0        1      removed

       2       8       24        -      faulty   /dev/sdb8


Which result do you need me to post (I've to admit I'm a bit confused with all those cmd :crazy

[Jocko]

Well

if dmesg is verbose it is not a good new (there is an issue somewhere). Maybe because you try to re-use the original disk which has been detected as a faulty disk!

So post the output of

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dmesg

if a same sequence is repeated many times you can cut them