Utku Somer wrote: > Tejun Heo wrote: >> Tiemouts without any link layer problem reported. Hmmm.... Does it >> help if you disable NCQ with the following command? >> >> # echo 1 > /sys/block/sdX/device/queue_depth >> >> Thanks > I had the same idea after I read around the mailing list. (But I was > ignorant > on the way, I actually tried to echo 0 into queue_depth first. Good > thing it doesn't > let me.) Anyway, it has been running without the errors for more than 12 > hours > now. I also tried by increasing the disk load, which increases the > chances of the problem > occurring. It has not happened yet. > > So yes, disabling NCQ stops the problem from occurring. > > Any ideas? Timeouts w/ NCQ seem to be one of the most subtle failure modes. It can be caused by several different issues - firmware bug, power problem or link layer problem. Is there a firmware update available for your drive? If there's one, please save the output of "hdparm -I" before going forward with firmware update. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
