5big2 not booting

[Jocko]

I think there is no longer Lacie support with this 5big2 version and with 2 faulty disks LACIE support did not do nothing except for restoring the firmware with data lost

Before trying to assemble again md4, do

Code: Select all

mdadm --manage --stop /dev/md4

[peterihuman]

I would not turn it over to Lacie, I woould take it to a data recovery company here in Denmark.

After a --manage stop I could assemble, but it gives me an input/output error when trying to mount.

Code: Select all

root@fvdw-sta-kirkwood:/ # mdadm --assemble /dev/md4 /dev/sd[abcd]2 --force
mdadm: /dev/md4 has been started with 4 drives (out of 5).
root@fvdw-sta-kirkwood:/ # cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md4 : active raid5 sda2[0] sdd2[3] sdc2[2] sdb2[1]
      5852511232 blocks level 5, 64k chunk, algorithm 2 [5/4] [UUUU_]
     
unused devices: <none>
root@fvdw-sta-kirkwood:/ # mdadm --detail /dev/md4
/dev/md4:
        Version : 0.90
  Creation Time : Thu Jan  1 00:01:07 1970
     Raid Level : raid5
     Array Size : 5852511232 (5581.39 GiB 5992.97 GB)
  Used Dev Size : 1463127808 (1395.35 GiB 1498.24 GB)
   Raid Devices : 5
  Total Devices : 4
Preferred Minor : 4
    Persistence : Superblock is persistent

    Update Time : Fri Nov 25 21:55:36 2016
          State : clean, degraded
 Active Devices : 4
Working Devices : 4
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 64K

           UUID : 8508cd4c:e50c8378:642ee5f7:16a31c22
         Events : 0.3598

    Number   Major   Minor   RaidDevice State
       0       8       34        0      active sync   /dev/sda2
       1       8       18        1      active sync   /dev/sdb2
       2       8        2        2      active sync   /dev/sdc2
       3       8       66        3      active sync   /dev/sdd2
       4       0        0        4      removed
root@fvdw-sta-kirkwood:/ # mount -o ro /dev/md4 /md4
mount: mounting /dev/md4 on /md4 failed: Input/output error
root@fvdw-sta-kirkwood:/ #


[Jocko]

Your fs on md4 seems to be corrupted (I think its superblock).
You can can try to repair it but to do it you need a swap partition as there is no enough memory on 5big2 to run the related commands only from RAM.

So you need to assemble another raid

Code: Select all

mdadm --assemble /dev/md3 /dev/sd[abcde]5
mkswap /dev/md3
swapon /dev/md3

upload some new files

Code: Select all

tftp -l /sbin/xfs_repair -r xfs_repair -g ip-pc
chmod 755 /sbin/chmod 755 xfs_repair
tftp -l glibc-mini-mkfs.xfs-25feb14.tar -r glibc-mini-mkfs.xfs-25feb14.tar -g ip-pc
tar -xvf glibc-mini-mkfs.xfs-25feb14.tar -C /

(ip-pc is the ip of the laptop where fvdw-sl console is running)

run first xfs_repair with no-modify mode

Code: Select all

xfs_repair -n /dev/md4

too see what is the issue

[peterihuman]

Thank you.

We have, just now, decided that the data is too important to be writing on the disks, in case that more disks (or data) will become corrupted.

I will turn over the raid to a professional data restorer now, and will get an offer on cost.


Thank you for all assistance and work on the forum and firmwares.
I hope I can use the forum again :)

Sincerely
Peter

[Jocko]

Ok,

I can understand your choice.