hey, I recently hit the raid0 default_layout issue and found the warning message to be lacking (and google hits show that I'm not the only one). It wasn't clear to me that it was referring to a kernel parameter, also wasn't clear how I should decide which setting to use, and definitely not clear that picking the wrong one could *cause corruption* (which, AIUI, is the case). What are your thoughts on adding a more admin-friendly explanation/steps on resolving the problem to the admin-guide, and include a URL to it in the warning message? As prior art: https://github.com/torvalds/linux/commit/6a012288d6906fee1dbc244050ade1dafe4a9c8d If the idea has merit, let me know if you'd like me to take a stab at a strawdog. -dann
