[Unit]
Description=btrfsmaint

[Timer]
# we could programatically get this via:
# timedatectl show --property=Timezone | sed 's/^[^=]*=//'
# or
# readlink /etc/localtime | sed -r 's,^.*/([^/]+/[^/]+)$,\1,'

# every 5 minutes
OnCalendar=*-*-* *:00/5:00

[Install]
WantedBy=timers.target