def METHOD_NAME(expected_fs, output):
    """
    Validate fs information restriction for clients
    :param expected_fs - only fs expected to show in output
    :param output - output of 'ceph fs ls'
    """
    if len(output) != 1 and output[0]["name"] != expected_fs:
        raise CommandFailed("fs is not matching with authorized FS")
    log.info(f"File systems Information is restricted to {expected_fs} only")