On Fri, Oct 25, 2019 at 12:16 PM dann frazier <dann.frazier@xxxxxxxxxxxxx> wrote: > > 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. I think it is good to provide some more information for the admin. But I am not sure whether we need to point to a url, or just put everything in the message. Please feel free to try add this information and submit patches. Thanks, Song