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PostPosted: Thu Jul 16, 2015 1:43 pm 
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Total Newbie

Joined: Thu Jul 16, 2015 1:07 pm
Posts: 2
Hello,

Iam trying to read Data from my Buffalo NAS LS-WXL on my Kubuntu 14.10 Working Station.

So first:

(1) My Buffalo NAS break down, I got an Email about Disk-failure on drive 1 - I identified "Sector-Errors" so the disk should be broken. Anyway!

(2) After I came home I should down by shifting to the Off-Position

(3) I tried to reboot the NAS for Maintainance but there I was unable to get to the WEBGUI. The NAS was just in Emergency-Mode (thats the Information which I got from my Windows Laptop with the Buffalo Software) Anyway!

(4) I put out the Disk and want to read the Datas in the raid-Partion manualy for comparing with my Backupdrive. But unfortunately without succes. (the RAID-Filesystem should be ext3.

(Here Iam right now)

(5) It seems, that there is no Superblock for me to read.
Hint: Thats the place where I looked and found a little howto:
http://www.pcwelt.de/ratgeber/Raid-Verbund_unter_Linux_reparieren-Anleitung-8353258.html

Code:
dafosy@kubuntu14:/media/test$ sudo mdadm --examine /dev/sdb1
[sudo] password for dafosy:
mdadm: No md superblock detected on /dev/sdb1.


Code:
dafosy@kubuntu14:~$ sudo fdisk -l
[...]
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 Köpfe, 63 Sektoren/Spur, 243201 Zylinder, zusammen 3907029168 Sektoren
Einheiten = Sektoren von 1 × 512 = 512 Bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Festplattenidentifikation: 0x00000000

   Gerät  boot.     Anfang        Ende     Blöcke   Id  System
/dev/sdb1               1  3907029167  1953514583+  ee  GPT
Partition 1 beginnt nicht an einer physikalischen Sektorgrenze.




(6) Thats what kde-partitionmanager is showing:
(6 different Partitions, but just the first one is visible with mount. There are some Buffalo-Files on it and its just something around 200MB.)

Image

(7)
- Do you have any ideas how Iam able to mount the RAID-Partition?
- Do you guys having any idea how to leave the emergency mode and bring back the NAS to work?
- I have a new disk-drive with 2TB still here.

Thanks a lot
dafosy


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PostPosted: Thu Jul 16, 2015 3:19 pm 
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Moderator

Joined: Mon Apr 26, 2010 10:24 am
Posts: 2691
Raid 0 or Raid 1?


Raid 1 set your X in sdX6:
Code:
mkdir /mnt/daten

mdadm --assemble --run /dev/md1 /dev/sdX6

mount /dev/md1 /mnt/daten

ls -l /mnt/daten


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PostPosted: Thu Jul 16, 2015 10:08 pm 
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Total Newbie

Joined: Thu Jul 16, 2015 1:07 pm
Posts: 2
Hello oxygen8,

it was a Raid1 System.

Following is returned:

Code:
dafosy@kubuntu14:~$ sudo mdadm --assemble --run /dev/md1 /dev/sdb6
[sudo] password for dafosy:
mdadm: no recogniseable superblock on /dev/sdb6
mdadm: /dev/sdb6 has no superblock - assembly aborted


Maybe I could renew the Partition-Table with testdisk or something, so that mdadm could find the superblock. Everything should be fine on the disk, because after the failure I just halt the NAS and reboot it yesterday for getting the NAS back to work.


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PostPosted: Sun Jul 26, 2015 1:50 pm 
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Newbie

Joined: Tue Nov 19, 2013 2:17 pm
Posts: 6
nothing, reading too fast


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