Hello, from my understanding of ioatdma it just should be loaded before raid456 to make use it, shouldn't it? I just wonder why memcpy_count and bytes_transferred in /sys/class/dma/* is always zero. I guess the kernel version is relevant, but this a bit difficult to answer, since we have backported a huge chunk of raid, ioatdma and dca to 2.6.22... Do I miss something? Thanks, Bernd -- Bernd Schubert Q-Leap Networks GmbH -- 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