Import ZFS pool

zfs-load-key.service

# This service will unlock all ZFS pools at boot time
# It should live in
# /etc/systemd/system/zfs-load-key.service
# Enable it with
# systemctl enable zfs-load-key.service

[Unit]
Description=Load encryption keys
DefaultDependencies=no
Before=zfs-mount.service
After=zfs-import.target

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/bin/bash -c '/sbin/zfs load-key -a'

[Install]
WantedBy=zfs-mount.service

zpool-import.sh

zpool import <nameofzpool>
zfs set keylocation=file:///path/to/key <nameofzpool>/<nameofdataset>
zfs load-key <nameofzpool>/<nameofdataset> # or load all with zfs load-key -a
zfs mount <nameofzpool>/<nameofdataset>