Tune2fs

tune2fs used to modify file system parameters

To modify ext4 for metadata checksums tune2fs -O metadata_csum

To disable ext4 metadata checksum: tune2fs -O ^metadata_csum

Show file system characteristics

# tune2fs -l /path/to/device 
# tune2fs -l /dev/sda25
# tune2fs -l /dev/[[cciss]]/c1d1p1
# tune2fs -l /dev/mapper/dm-path-name

See also

• File systems: clustered file system, tune2fs mkfs.ext4,superblock, e2fsck, resize2fs, mount, df, umount, UUID, fstab