The e2fsprogs package contains a number of utilities for creating,
checking, modifying, and correcting any inconsistencies in second,
third and fourth extended (ext2/ext3/ext4) filesystems. E2fsprogs
contains e2fsck (used to repair filesystem inconsistencies after an
unclean shutdown), mke2fs (used to initialize a partition to contain
an empty ext2 filesystem), debugfs (used to examine the internal
structure of a filesystem, to manually repair a corrupted
filesystem, or to create test cases for e2fsck), tune2fs (used to
modify filesystem parameters), and most of the other core ext2fs
filesystem utilities.
You should install the e2fsprogs package if you need to manage the
performance of an ext2, ext3, or ext4 filesystem.