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SubjectRe: Silicon Image 3112A SATA trouble
Bartlomiej Zolnierkiewicz wrote:
> On Sunday 30 of November 2003 17:51, Jens Axboe wrote:
>>>Tangent: My non-pessimistic fix will involve submitting a single sector
>>>DMA r/w taskfile manually, then proceeding with the remaining sectors in
>>>another r/w taskfile. This doubles the interrupts on the affected
>>>chipset/drive combos, but still allows large requests. I'm not terribly
>>
>>Or split the request 50/50.
>
>
> We can't - hardware will lock up.

Well, the constraint we must satisfy is

sector_count % 15 != 1

(i.e. "== 1" causes the lockup)

Beyond that, any request ratio should be ok AFAIK...

Jeff



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