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SubjectRe: ide-dma & ST-36530A
On Tue, 13 Oct 1998, Mark Lord wrote:

> Michael Vogt wrote:
> >
> > Dear Friends
> >
> > I use a Segate ST-36530A (6,5Gb) on a via82c586 (linux 2.1.124 & 125)
> > If I enable ide-dma support, I get strange errors while copying files onto
> > that hd:
> > -----------------------8<----------------------------
> > Oct 8 16:50:22 top kernel: attempt to access beyond end of device
> > Oct 8 16:50:22 top kernel: 03:01: rw=0, want=134223737, limit=3076416
> > Oct 8 16:50:22 top kernel: attempt to access beyond end of device
> > Oct 8 16:50:22 top kernel: 03:01: rw=0, want=134223738, limit=3076416
> > Oct 8 16:50:22 top kernel: attempt to access beyond end of device
> > Oct 8 16:50:22 top kernel: 03:01: rw=0, want=134223737, limit=3076416
> > -----------------------8<----------------------------
> ..
> > What do you think ? Should the ST-36530A on the blacklist, or is it a driver
> > problem ?
>
> Those messages indicate a software bug in the kernel somewhere,
> not a hardware failure.
>
> Dunno what.

It could be a hardware problem if it resulted in corrupted data in the
inodes. I've had a few inodes whose block lists got scrambled and any
attempt to access those files resulted in messages like the above.

This could also be a single bit memory error somewhere since the block
numbers above look like 0x8001779 and 0x800177A in hex. Take away that
top bit and they look like they could be block numbers.

--
Cameron Heide (cheide@harbor.ab.ca)


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