In order to test the stability of the Lustre file system under continuous workload and extreme resource usage, I wrote a tool to write data to files continuously unless 'ENOSPC' occurs, then the tool will truncate and delete some old files to free the space and continue to write the files. Before the file is truncated, its content will be verified. The problem is that after running the tool for a while, the content of some file would be wrong.

If the data is corrupted, it will fail with:
yaft: main.cpp:81: void check_file_content(const std::string&): Assertion `rbuf.checkAt(pos)' failed.
Aborted

You can get the tool at:
https://github.com/zhang-jingwang/yaft.git