ubuntu@juju-8c74e6-2-lxd-0:~$ sudo systemctl list-units|grep snap
  run-snapd-ns.mount                                                                               loaded active mounted   /run/snapd/ns
  snap.mount                                                                                       loaded active mounted   /snap
  lvm2-monitor.service                                                                             loaded active exited    Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling
  snapd.service                                                                                    loaded active running   Snappy daemon
  snapd.socket                                                                                     loaded active running   Socket activation for snappy daemon
  snapd.refresh.timer                                                                              loaded active waiting   Timer to automatically refresh installed snaps