Repair of super block damage of ext3 File System

Repair of super block damage of ext3 File System-Linux general technology-Linux technology and application information. The following is a detailed description. # Mount/dev/sde1/foo
Mount: wrong fs type, bad option, bad superblock on/dev/sde1,
Or too mounted file systems

. How can this problem be solved?

Answer:
This error message indicates that the super block of the ext3 File System on the/dev/sde1 device is damaged, and the metadata of the ext3 file system is saved in the super block.

The ext3 file system also has several backup Super blocks. You can try to use the backup super block to load the ext3 file system and repair the ext3 file system.

The backup super block information can be obtained through the following command. This command simulates the action when the ext3 file system is created and prints the position of the backup super block. The default position is 4 K, when using the mount command, you need to provide an offset in the unit of 1 K, which must be multiplied by 4:

Note! You must use '-n' as the parameter to simulate the creation of the ext3 file system instead of creating the ext3 file system.
# Mkfs. ext3-n/dev/hda7
Mke2fs 1.38 (30-Jun-2005)
Filesystem label =
OS type: Linux
Block size = 4096 (log = 2)
Fragment size = 4096 (log = 2)
2198880 inodes, 4393738 blocks
219686 blocks (5.00%) reserved for the super user
First data block = 0
135 block groups
32768 blocks per group, 32768 fragments per group
16288 inodes per group
Superblock backups stored on blocks:
32768,983 04, 163840,229 376, 294912,819 200, 884736,160 5632, 2654208,
4096000

Run the following command to load the ext3 File System Using the backup super block:

Syntax: mount. ext3-o sb = n
# Mount. ext3-o sb = 131072/dev/hda7/media/hda7

Use the backup super block to restore the ext3 File System Command

Syntax: fsck. ext3-B superblock
# Fsck. ext3-B 32768/dev/hda7