zfs-initramfs 2.2.0~rc1-0ubuntu2 (s390x 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 adds OpenZFS to the system initramfs with a hook
 for the initramfs-tools infrastructure.