Perform backup action

    :param file: Name of the file to be used by the driver
    :param host: Corresponding host name associated with file

def backup_file(*, file, host):
    """
    Perform backup action

    :param file: Name of the file to be used by the driver
    :param host: Corresponding host name associated with file
    """
    log.msg("[{host}] Backing up file '{file}'".format(host=host, file=file))