Kernel Dump when accessing second drive

[YONETANI Tomokazu]

On Mon, May 17, 2010 at 07:03:02PM -0700, Dylan Reinhold wrote:
> I will keep digging and see if I can atlease see where the ata drive
> is getting these errors. And if I am real lucky find a way to make
> my card play nicer with DragonFly. Well until I corrupt my drive ;-)
> 
> I was going to go out and get a new card, but maybe this will keep
> me on track to see if I can make it a bit better.

Before trashing your drive or buying a new card, try

  natacontrol mode ad6 PIO4

before running rsync or cpdup.  This slows the thing, but you may be able
to avoid the DMA errors.

Cheers.