wei liao

sorrt,I'm not familiar with python an fio,I send log for you [cetune_python_log_file.log](https://github.com/01org/CeTune/files/1389767/cetune_python_log_file.log) [cetune_error_log_file.log](https://github.com/01org/CeTune/files/1389768/cetune_error_log_file.log) [cetune_process_log_file.log](https://github.com/01org/CeTune/files/1389769/cetune_process_log_file.log)

please see the new logs,thank you [cetune_python_error_log_file.log](https://github.com/01org/CeTune/files/1389902/cetune_python_error_log_file.log) [cetune_python_log_file.log](https://github.com/01org/CeTune/files/1389903/cetune_python_log_file.log) [cetune_process_log_file.log](https://github.com/01org/CeTune/files/1389904/cetune_process_log_file.log)

yes,I found the problem.But I don't know the reason.I have 3 osd nodes,when I set the list_client to be one of the nodes in cluster configuration,the test can be success...

I reproduce the problem,please see the logs [cetune_python_log_file.log](https://github.com/01org/CeTune/files/1390178/cetune_python_log_file.log) [cetune_process_log_file.log](https://github.com/01org/CeTune/files/1390179/cetune_process_log_file.log) [cetune_error_log_file.log](https://github.com/01org/CeTune/files/1390180/cetune_error_log_file.log)