The reiserfs-utils package contains a number of utilities for
creating, checking, modifying, and correcting any inconsistencies in
ReiserFS filesystems, including reiserfsck (used to repair filesystem
inconsistencies), mkreiserfs (used to initialize a partition to
contain an empty ReiserFS filesystem), debugreiserfs (used to examine
the internal structure of a filesystem, to manually repair a corrupted
filesystem, or to create test cases for reiserfsck), and some other
ReiserFS filesystem utilities.
You should install the reiserfs-utils package if you want to use
ReiserFS on any of your partitions.