On Wednesday October 10, florian.rustedt@xxxxxxxxxxx wrote: > Hello List, > > while resyncing, the process takes the whole bandwidth from disk to disk. > > This leads in a VERY unhappy situation, because the system on this raid is > unpractical slow now, because it has to wait for disk-io. > > How can i tune this? I want somthing like "nice -n 19 dm-mirror" ;) Are you using MD raid, or DM? If DM, then it is my understanding that you cannot ratelimit. If DM, then you already have the answer from a previous post. NeilBrown - 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