[SOLVED]: URGENT 810 Software RAID failed after power outage

[Crumble]

Ok try

mdadm --assemble --force /dev/md1 /dev/sd[bcde]1

[Beeker]

got this

dcerouter_1024641:/home/bruce# mdadm --assemble --force /dev/md1 /dev/sd[bcde]1
mdadm: /dev/md1 has been started with 3 drives (out of 4).
dcerouter_1024641:/home/bruce#

[Beeker]

LMCE now reports the RAID status as damaged and when I check the status of each HDD

sdb is ok
sbc is ok
sdd is still saying removed
sde is ok
sdf is still saying removed

[Crumble]

There you go.  You only need the three.  But once its done get that data off.  One drive failure and its kablooe data.  You can check the rebuild with

cat /proc/mdstat

[Beeker]

Thanks Crumble you are awesome and I really
appreciate your patience and help

Kind regards
Beeker

[Crumble]

No problem Beeker.   You owe me the life debt now :-p

[Beeker]

you bet I do...........and there was going to be a special mention to you on my headstone if all that hard work didn't pay off

I just browsed to the RAID array and all the data is there so I will be madly copying all the data off tonight

[Beeker]

Hey Crumble,
Do you know if it will repair itself eventually or will it stay in damaged mode?

Don't want to push my luck though I cant get any help in getting LMCE to regonise the QNAP NAS if you see my other recent post I have tried everything I know which isn't much

[Crumble]

It will stay in damaged mode until sdd1 is added.  I will check the other thread never used a QNAS.  Once you get that data off we can sdd1 back in if you like

[Beeker]

Thanks............its a circus of HDD lights flashing in my office copying all that data off

[Beeker]

Hi Crumble,
Sorry been traveling and I finally got all the data of the RAID array and I want to try and add in the sdd1 so what should we do

Cheers
Beeker 

[Crumble]

Hey Beeker, give me a fdisk -l and a df -h

[Beeker]

No problems I will get it shortly and come back to

Cheers
Beeker

[Beeker]

Hi Crumble,
Very sorry been out of action with work and an arm injury...........below is fdisk -l and the df -h

Cheers
Beeker

--------------------------------------------------------------------------------------------------------------
dcerouter_1024641:/home/# fdisk -l

Disk /dev/sda: 750.1 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x39686ed2

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1       90446   726507463+  83  Linux
/dev/sda2           90447       91201     6064537+   5  Extended
/dev/sda5           90447       91201     6064506   82  Linux swap / Solaris

Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0006a5c8

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1      182401  1465136001   83  Linux

Disk /dev/sdc: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xb217d64b

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1      182401  1465136001   83  Linux

Disk /dev/sdd: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x43b7a284

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1      182401  1465136001   83  Linux

Disk /dev/sde: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x2848762e

   Device Boot      Start         End      Blocks   Id  System
/dev/sde1               1      182401  1465134080   83  Linux
dcerouter_1024641:/home/#

---------------------------------------------------------------------------------------------------

dcerouter_1024641:/home/# df -h
Filesystem            Size Used Avail Use% Mounted on
rootfs                682G   44G  604G   7% /
udev                 1012M  2.9M 1009M   1% /dev
/dev/disk/by-uuid/50ef0102-13de-4f96-8c0f-23a2e75ee41f
                      682G   44G  604G   7% /
/dev/disk/by-uuid/50ef0102-13de-4f96-8c0f-23a2e75ee41f
                      682G   44G  604G   7% /dev/.static/dev
tmpfs                1012M     0 1012M   0% /lib/init/rw
varrun               1012M  392K 1012M   1% /var/run
varlock              1012M     0 1012M   0% /var/lock
tmpfs                1012M  2.2M 1010M   1% /lib/modules/2.6.27-17-generic/volatile
tmpfs                1012M     0 1012M   0% /dev/shm
/dev/md1              4.1T  3.2T  703G  83% /mnt/device/31
/dev/md1              4.1T  3.2T  703G  83% /tmp/tmp.RZtaM22685
dcerouter_1024641:/home/#

[Crumble]

ok now i need

mdadm -D /dev/md1