This article addresses a device boot failure caused by EXT4 filesystem metadata corruption.

During boot, the console displays repeated EXT4 filesystem errors similar to:

EXT4-fs error : ext4_iget:4157: inode #266347: comm S20bind: bad extra_isize (63358 != 256)
EXT4-fs error : ext4_iget:4157: inode #267649: comm modprobe: bad extra_isize (433 != 256)
EXT4-fs error : ext4_iget:4157: inode #266292: comm S20bind: bad extra_isize (12728 != 256)

The device fails to boot normally.

The errors indicate filesystem metadata corruption on an EXT4 filesystem. Specifically:

• The kernel detects invalid inode metadata (bad extra_isize) where a value of 256 bytes is expected.
• Corruption is exposed when system processes (e.g., S20bind, modprobe) attempt to access affected files.

Recommended actions:

• Attempt to repair the filesystem from the VMHost or recovery environment using appropriate filesystem check/repair utilities.
• If repair is unsuccessful or corruption is severe, proceed with reimaging the device using install media