I finally got my 2TB array synced. Success was achieved by throttling it to 10MB/sec: echo 10000 >/proc/sys/dev/raid/speed_limit_max When left at 100MB/sec the raid5d daemon was hitting 100% CPU (hogging one CPU on a dual 1Ghz) -- don't know if this may be related or not. - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html