'Create a DISCO volume.'

def volumeCreate(self, volume_name, size):

    params = {'volumeName': volume_name, 'volumeSize': size, 'backupPolicyId': (-1)}
    data = json.dumps(params, sort_keys=True, indent=4, separators=(',', ':    '))
    request = ('%(req_prefix)s/volume' % self.prefix_var)
    r = requests.post(request, data, headers=self.req_headers)
    return r.json()
