On Thu, Jun 26, 2008 at 9:07 AM, Keld Jørn Simonsen <keld@xxxxxxxx> wrote: > It could be random IO, sort of. I am not sure how the checking is done, > but if it does it in sequential block order there will be a lot of > head moving because of the striping layout of raid10,f2. That's exactly what I was thinking. When I get some time, perhaps I'll dig into the source. -- Jon -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html