DragonFly bugs List (threaded) for 2007-07
DragonFly BSD
DragonFly bugs List (threaded) for 2007-07
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Re: ccd on NATA problem - ata0: FAILURE - oversized DMA transfer attempt 73728 > 65536


From: YONETANI Tomokazu <qhwt+dfly@xxxxxxxxxx>
Date: Wed, 18 Jul 2007 15:01:39 +0900

On Tue, Jul 17, 2007 at 10:52:05PM -0700, Matthew Dillon wrote:
> 
> :On Tue, Jul 10, 2007 at 12:58:16PM +0900, YONETANI Tomokazu wrote:
> :> It worked fine as I tested lightly(-j2 buildworld).  I'll try to test later
> :> with different max iosize of component devices.
> :
> :Hi, I tried to reduce the default max_iosize in ata_dmainit()
> :to 64 * DEV_BSIZE(=32768), expecting that it reduces si_iosize_max
> :as it's assigned ch->dma->max_iosize in ata_attach(), but now NATA
> :fails setting up DMA.  Is there any other way to achive the reduced
> :iosize?
> :
> :Cheers.
> 
>     Are you running the patch for CCD?  Which I did commit.

Yes, I saw that it was committed.  I have the latest source,
and in this case CCD is irrelavant (because it happens on non-ccd
system, too).  The system using CCD is working just fine as my
build machine.

Cheers.



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