zfs/etc/systemd/system/zfs-zed.service.in

[Unit]
Description=ZFS Event Daemon (zed)
Documentation=man:zed(8)
ConditionPathIsDirectory=/sys/module/zfs

[Service]
ExecStart=@sbindir@/zed -F
Restart=always

[Install]
Alias=zed.service
WantedBy=zfs.target