'Take a snapshot of the volume.'

def snapshotCreate(self, disco_volume_id, reserve_days, zone_id=None, description=None):

    params = {'volumeId': disco_volume_id, 'reserveDays': reserve_days, 'description': description}
    data = json.dumps(params, sort_keys=True, indent=4, separators=(',', ':    '))
    request = ('%(req_prefix)s/snapshot' % self.prefix_var)
    r = requests.post(request, data, headers=self.req_headers)
    return r.json()
