From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <e5314c21c4f54c7c465eb9186a2be430@quanstro.net>
From: erik quanstrom <quanstro@quanstro.net>
Date: Wed,  6 Feb 2008 17:40:11 -0500
To: 9fans@cse.psu.edu
Subject: Re: [9fans] VIA VT8237 SATA/RAID i/o errors, dma doesnt work
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> block sizes dont seem to matter, tried from 512 bytes to 64K in the
> adaptec case. i also get no errors in /dev/kprint. just read() returns
> Eio.
>
> i have no knowledge of IDE or SATA interfaces, so i'm a little bit lost
> in the code. :-( the chipset specific IDE code in linux seens to set
> mostly some timing related control registers, but doesnt change
> the logic how error conditions are handled as far as i can see. maybe
> it does by switching some important quirk flags but its not obvious
> to me.
>
> i would like to raise the debug level of sdata.c, just set any bit and got
> flooded with messages. so it would be great if you could hint me on
> some interesting debug cases where to look.
>
> many thanks so far for the quick responses! :-)
>
> cinap

is it possible you are reading or writing outside the bounds of the partition?

- erik