[Unit]
Description=Activate backup on Device %i

[Path]
PathExists=/dev/disk/by-partuuid/%i
#PathExists=/dev/disk/by-uuid/%i
#Unit=systemd-cryptsetup@mars.service
#Unit=status-email-jakob@%n.service
Unit=var-cache-backup@%i.mount
#Unit=dev-disk-by\x2dpartuuid-%i.mount

[Install]
WantedBy=paths.target