Grub and ZFS

OpenZFS provides ZPOOL features that can be not compatible with GRUB. To check compatibility zpool-features.7

ls -l /usr/share/zfs/compatibility.d/grub2
lrwxrwxrwx 1 root root 10 cze 29 15:54 /usr/share/zfs/compatibility.d/grub2 -> grub2-2.12
 
cat /usr/share/zfs/compatibility.d/grub2

zpool set compatibility=grub2 bpool