NAS540 data lost on harddisk after factory reset

PawelS

1. I didnt Mount them as I don't know why. I will try later. 
2. Power loss did that. 

PawelS

Should I use command exactly as you posted? 

Mijzelf

There are variations possible, but this should work.

PawelS

i did it.

last out put is:

md3: detected capacity change from 0 to 995973988352

 md2: unknown partition table

 md3: unknown partition table

bio: create slab <bio-2> at 2

EXT4-fs (dm-3): ext4_check_descriptors: Checksum for group 128 failed (62833!=0)

EXT4-fs (dm-3): group descriptors corrupted!

Rounding down aligned max_sectors from 4294967295 to 4294967288

EXT4-fs (dm-1): warning: mounting fs with errors, running e2fsck is recommended

EXT4-fs (dm-1): recovery complete

EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null)

~ #

PawelS

And still did not get my folders.

PawelS

how should i mount second disk?

Mijzelf

And still did not get my folders.

You should be able to see (part of) your folders in /tmp/mountpoint:

ls -l /tmp/mountpoint/

how should i mount second disk?

Basically the same. But you need to use a different mountpoint

mkdir /tmp/mountpoint2

mount /dev/dm-3 /tmp/mountpoint2

dmesg | tail

But I don't know if it will happen. Something is wrong with dm-3, and I don't know what that means:

EXT4-fs (dm-3): ext4_check_descriptors: Checksum for group 128 failed (62833!=0)
EXT4-fs (dm-3): group descriptors corrupted!
Rounding down aligned max_sectors from 4294967295 to 4294967288