def get_hostname_to_data_dict(fio_data):
    """Create dictionary mapping hostname to its fio data.

    Returns:
        Dict[str, List[dict]] - hostname to its fio data
    """
    hostname_data_dict = {}
    for jb in fio_data['client_stats']:
        if jb['jobname'] == 'All clients':
            continue
        hostname = jb['hostname']
        if hostname not in hostname_data_dict:
            hostname_data_dict[hostname] = [jb]
        else:
            hostname_data_dict[hostname].append(jb)
    return hostname_data_dict