I tried to restore a backup superblock but it didn't seem to work at all.
When I do sudo mke2fs -n /dev/sdc1 I get the list with the alternatives superblocks (sorry for the spanish)
Code:
mke2fs 1.41.11 (14-Mar-2010)
Etiqueta del sistema de ficheros=
Tipo de SO: Linux
Tamaño del bloque=4096 (bitácora=2)
Tamaño del fragmento=4096 (bitácora=2)
Stride=0 blocks, Stripe width=0 blocks
30531584 nodos-i, 122096000 bloques
6104800 bloques (5.00%) reservados para el superusuario
Primer bloque de datos=0
Número máximo de bloques del sistema de ficheros=4294967296
3727 bloque de grupos
32768 bloques por grupo, 32768 fragmentos por grupo
8192 nodos-i por grupo
Respaldo del superbloque guardado en los bloques:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000
Anyway, I tried to restore the superblock or to mount the HD using one of the backups and I get the same error. With
sudo e2fsck -f -b 294312 /dev/sdc1
or
sudo mount -t ext4 -o sb=163840 /dev/sdc1 /mnt
Code:
e2fsck: Attempt to read block from filesystem resulted in short read
And here the dmesg | tail for one of the attempts.
Code:
[70957.568359] sd 6:0:0:0: [sdc] CDB: Read(10): 28 00 0c 35 00 3f 00 00 02 00
[70957.568371] end_request: I/O error, dev sdc, sector 204800063
[70957.568381] EXT4-fs (sdc1): unable to read superblock
[70983.313609] sd 6:0:0:0: [sdc] Unhandled sense code
[70983.313614] sd 6:0:0:0: [sdc] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[70983.313619] sd 6:0:0:0: [sdc] Sense Key : Medium Error [current]
[70983.313625] sd 6:0:0:0: [sdc] Add. Sense: Unrecovered read error
[70983.313630] sd 6:0:0:0: [sdc] CDB: Read(10): 28 00 01 57 00 3f 00 00 02 00
[70983.313642] end_request: I/O error, dev sdc, sector 22478911
[70983.313654] EXT4-fs (sdc1): unable to read superblock
And again, I can see all the files and metadata. Any hint would be appreciated.
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