Comment 382 for bug 620074

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In , axboe (axboe-linux-kernel-bugs) wrote :

This question has probably been answered before, but this bug is huge so I'll just ask again... Thomas, what kind of drive are you using? Does it have NCQ enabled? If so, does disabling NCQ make any difference?

You can disable NCQ on sda by doing:

# echo 1 > /sys/block/sda/device/queue_depth

(or use sdX for others, naturally).