KERNEL=="sr{0-1}", SUBSYSTEM=="block", ACTION=="change", RUN+="/bin/systemctl restart cd-mount@%k.service"

[Unit]
Description=Mount CD drive on %i

[Service]
Type=oneshot
RemainAfterExit=true
ExecStart=/usr/local/bin/cd-mount.sh %i
ExecStop=/usr/local/bin/cd-mount.sh %i