Hi, after re-sync and fsck, everything seems fine. The first try to copy a big test file to the raid5 starts with a speed of ~45 MB/s which is perfect, but after a couple of minutes the speed goes down to ~10 KB/s. The only way to get the raid5 working again was to reset the system. The raid5 then goes again in resync from an unclean array. I checked dmesg, but found nothing. What can I do to get more information what is going on there? Thanks, Alex -- 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