ZFS on Debian w/o systemd?
ZFS Ubuntu 18.04
https://github.com/zbm-dev/zfsbootmenu/wiki/Void-Linux----Single-disk-syslinux-MBR
https://didrocks.fr/2020/06/16/zfs-focus-on-ubuntu-20.04-lts-zsys-dataset-layout/
? https://www.alibabacloud.com/blog/use-your-storage-space-more-effectively-with-zfs-exploring-datasets_594180
https://www.reddit.com/r/zfs/comments/mj4nfa/ubuntu_server_2104_native_encrypted_root_on_zfs/
https://gitlab.com/Sithuk/ubuntu-server-zfsbootmenu