mount command yields wrong fs type, bad option, bad superblock

kern68 · 01-01-2017, 11:48 AM

I have a 2TB hard disk that does not mount.

Code:

fdisk -l
Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x000c7dad

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048  3907028991  1953513472   83  Linux

Mounting the drives fails:

Code:

mount -a /dev/sda1 /mnt/2TBDrv/
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

Running dmesg yields:

Code:

dmesg | tail
[1531500.744315]         72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00 
[1531500.744322]         74 44 53 38 
[1531500.744326] sd 2:0:0:0: [sda]  
[1531500.744329] Add. Sense: Unrecovered read error - auto reallocate failed
[1531500.744331] sd 2:0:0:0: [sda] CDB: 
[1531500.744333] Read(10): 28 00 74 44 52 a8 00 00 f8 00
[1531500.744340] end_request: I/O error, dev sda, sector 1950634808
[1531500.744361] ata3: EH complete
[1531500.744538] JBD2: recovery failed
[1531500.744541] EXT4-fs (sda1): error loading journal

Not really sure where to go from here. Any help would be greatly appreciated. Thank you in advance.

Keruskerfuerst · 01-01-2017, 12:24 PM

Then try to mount the drive with the following command:
mount -t ext4 /dev/sda1 /mnt/2TBDrv/

kern68 · 01-01-2017, 04:13 PM

The suggestion:

Code:

mount -t ext4 /dev/sda1 /mnt/2TBDrv/

Failed with same error (wrong fs type....) with dmesg:

Code:

dmesg | tail
[1547159.908734] JBD2: IO error -5 recovering block 2451 in log
[1547159.908740] JBD2: Failed to read block at offset 2452
[1547159.908744] JBD2: IO error -5 recovering block 2452 in log
[1547159.908749] JBD2: Failed to read block at offset 2453
[1547159.908753] JBD2: IO error -5 recovering block 2453 in log
[1547162.306478] JBD2: recovery failed
[1547162.306496] EXT4-fs (sda1): error loading journal
[1547866.241539] radeon 0000:02:00.0: evergreen_surface_check_2d:277 texture pitch 1920 invalid must be aligned with 256
[1547866.241555] radeon 0000:02:00.0: evergreen_cs_track_validate_texture:826 texture invalid 0x1dfc3bc1 0x40000437 0x060a0000 0x00000000 0x80000000 0x800204da
[1547866.241563] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !

btmiller · 01-01-2017, 04:20 PM

Given that you get:

Code:

[1531500.744329] Add. Sense: Unrecovered read error - auto reallocate failed
[1531500.744340] end_request: I/O error, dev sda, sector 1950634808

It seems like the filesystem is either corrupt, the hard disk has failed, or both. Are you able to mount the drive in another machine? You might want to run some diagnostics on it (i.e. smartmontools). You should probably also back it up (via a block copy using dd) and attempt a filesystem check if the disk is physically OK.