etcd_databag.py

    def determine_storage_location(self):
        ''' Storage mounts are limited in snap confinement. Default behavior
        is to version the database files in $SNAP_DATA. However the user can
        attach durable storage, which is mounted in /media. We need a common
        method to determine which storage path we are concerned with '''

        if is_state('storage.volume.attached'):
            return "/media/etcd-data/"
        else:
            return "/var/snap/etcd/current"