Failure mounting /dev/sdb6 from LS-CH1.0TL

[waterman]

I get a 6x blinking LED when powering on. I have already tried some stuff according to the FAQ (using Win Vista), but the force update procedure does not succeed. So I first wanted to backup data before actually changing data on the drive.

 

So I removed the drive from the NAS housing and connected it through an USB adapter to an Ubuntu PC.

It instantly recognizes and moutn /dev/sdb2 as 5.3 GB filesystem, but the interesting partition is not mounted automatically.

 

I tried a manual mount:

sudo mount -t xfs /dev/sdb6 /home/andreas/big2

 

This is how the latest dmesg entries look like:

 

[  981.432257] usb 1-3.3: new high-speed USB device number 7 using ehci_hcd
[  981.631174] scsi7 : usb-storage 1-3.3:1.0
[  982.629709] scsi 7:0:0:0: Direct-Access     WDC WD10 EADS-00L5B1           PQ: 0 ANSI: 2 CCS
[  982.631802] sd 7:0:0:0: Attached scsi generic sg2 type 0
[  982.634387] sd 7:0:0:0: [sdb] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
[  982.636274] sd 7:0:0:0: [sdb] Write Protect is off
[  982.636284] sd 7:0:0:0: [sdb] Mode Sense: 00 38 00 00
[  982.637583] sd 7:0:0:0: [sdb] Asking for cache data failed
[  982.637592] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[  982.641225] sd 7:0:0:0: [sdb] Asking for cache data failed
[  982.641234] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[  982.678856]  sdb: sdb1 sdb2 sdb4 < sdb5 sdb6 >
[  982.682200] sd 7:0:0:0: [sdb] Asking for cache data failed
[  982.682205] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[  982.682209] sd 7:0:0:0: [sdb] Attached SCSI disk
[  983.192196] XFS (sdb2): Mounting Filesystem
[  983.306224] XFS (sdb2): Starting recovery (logdev: internal)
[  983.377875] XFS (sdb2): Ending recovery (logdev: internal)
[ 1524.113208] XFS (sdb6): bad magic number
[ 1524.113218] XFS (sdb6): SB validate failed

 

I tried:

 

 

sudo file -s /dev/sdb6
/dev/sdb6: data

 

 

 

 

sudo /sbin/fdisk /dev/sdb and then p

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 Köpfe, 63 Sektoren/Spur, 121601 Zylinder, zusammen 1953525168 Sektoren
Einheiten = Sektoren von 1 × 512 = 512 Bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Festplattenidentifikation: 0x56b6a7b5

   Gerät  boot.     Anfang        Ende     Blöcke   Id  System
/dev/sdb1              63     2008124     1004031   83  Linux
/dev/sdb2         2008125    12016619     5004247+  83  Linux
/dev/sdb4        12016620  1953520064   970751722+   5  Erweiterte
/dev/sdb5        12016683    14024744     1004031   82  Linux Swap / Solaris
/dev/sdb6        14024808  1951544069   968759631   83  Linux

So why does the mount command fail giving back a

[ 1524.113208] XFS (sdb6): bad magic number
[ 1524.113218] XFS (sdb6): SB validate failed

 

?

 

What is wrong here? Thanks for helping, Andreas.