zfs-test 2.1.99-0ubuntu3 (armhf binary) in ubuntu mantic

 OpenZFS is a storage platform that encompasses the functionality of
 traditional filesystems and volume managers. It supports data checksums,
 compression, encryption, snapshots, and more.
 .
 This package provides the OpenZFS test infrastructure for destructively
 testing and validating a system using OpenZFS. It is entirely optional
 and should only be installed and used in test environments.