Occasionally one of my devices with a 4 drive raid10 array resyncs very slowly. Typical resync speed is in the 50-60 MB/sec range. When running slow the speed is around 7-10 MB/sec. sync_speed_min is set to 20,000, max is set to 200,000. By setting sync_speed_min to 5000 I can slow the sync further, but setting it back to 20000 doesn't fix the speed. Other IO on the system is normal. The drives and the CPU are not maxed. I don't know what is triggering this slow sync state. Once in this state it will continue until the build completes. Any idea what might be happening here? I'm running Debian with a 2.6.22 kernel. Thanks for your help. - Michael -- 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
