ZFS on Debian

get ZFS from backports

/etc/apt/sources.list.d/debian-backports.sources
Types: deb deb-src
URIs: http://ftp.pl.debian.org/debian
Suites: trixie-backports
Components: main contrib non-free non-free-firmware
Enabled: yes
/etc/apt/preferences.d/90_zfs
Package: src:zfs-linux
Pin: release n=trixie-backports
Pin-Priority: 990