#!/usr/bin/env bash

zpool export -a
zpool import -N -R /mnt rpool
zpool import -N -R /mnt bpool
# skipping first rpool/ROOT and initial root (i.e. rpool/ROOT/ubuntu), because doesn't have tailing '/' so grabs numbers
zfs list | grep ROOT | tail -n+3 
zfs mount rpool/ROOT/ubuntu
zfs mount -a
mount --rbind /dev  /mnt/dev
mount --rbind /proc /mnt/proc
mount --rbind /sys  /mnt/sys
chroot /mnt /bin/bash --login