How to recover linux data after disk corruption

In a practical instance of the  Linux drive structure corruption in Fedora Linux OS, you may encounter the below error message when you reboot the Fedora operating system-based computer after it freezes at during boot up process-

"EXT-fs: dm-0: couldn't mount because of unsupported optional features (2000200)
mount error 22 - mounting ext 3"

Subsequent to the above error message, you might get further error message that says-

"kernel panic - not syncing: Attempting to kill init."

After this error message, Fedora OS cannot detect and access Linux hard disk volumes when you try to perform Linux disk recovery using Linux Rescue CD. When you try mounting the disk manually, it says that the disk has invalid arguments and thus it cannot be mounted.

Root cause of the problem

As mentioned above, this problem happens due to corruption to the logical structure of the Linux hard disk. It may also occur if drive data structures, like Superblock and file system, are damaged. Corruption might be the outcome of virus infection, OS malfunction, and other similar reasons.

Solution

Use any of the below Linux recovery solutions to sort out this problem-
Boot your Linux Machine using the Rescue CD and then run pvscan command for checking the logical volumes.
Run fsck -C -y /dev/hdXX command.

If none of the above file recovery methods work, you are required to format the disk and reinstall OS.
 

Although, formatting can fix all disk related problems, but it also cause serious data loss. In such situations, Linux File recovery software are required to recover lost data after formatting.