Re: New IDE code and DMA failures

[Petr Vandrovec]

On 11 Apr 02 at 6:05, Ted Deppner wrote:
> On Thu, Apr 11, 2002 at 03:39:33PM -0200, Denis Vlasenko wrote:
> > I have a flaky IDE subsystem in one box. Reads work fine,
> > writes sometimes don't work and hang either IDE/block device
> > 
> > Please inform me whenever you want me to test your patches.
> 
> I've been testing 2.4.17 and 2.4.19-pre6 and see some similar issues.  I
> have an Asus A7V w/ 1gig Athlon processor.  Using the onboard Promise
> UDMA100 controller, I can read and write all day long to /dev/hde all by
> itself...  However, after few minutes of any type of access to /dev/hdh,
> /dev/hde suddenly starts having DMA errors and switches to PIO.  I'm on my
> third DMA66 cable (yet it fights tightly), and am still seeing the exact
> same issues.  I don't believe my IDE subsystem to be flaky.  hde is a WD
> drive, and hdh is a Maxtor.

What your /dev/hdg is? Using slave-alone on the A7V's Promise (and maybe
on other motherboards too) will corrupt your disk badly. Under Linux,
and also under Windows98. I did not tried other OSes...
                                                Petr Vandrovec
                                                [e-mail]