Re: [BUG] ide dma_timer_expiry, then hard lockup

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Hi,

On Tuesday 19 June 2007, Linas Vepstas wrote:
> On Tue, Jun 19, 2007 at 08:10:25PM +0400, Sergei Shtylyov wrote:
> > 
> > >I'm thinking that trying to debug libata is a better idea, rather than
> > >investing time in ide, right?  Although at the moment, libata works even 
> > >less; see other email.
> > 
> >    Which makes me think this really is some *hardware* issue.

Linas, have you checked that there are no firmware updates available
for this drive?

> There are two distinct issues.
> -- libata locks up in partition table read on an hpt366+old maxtor disk
>    that has ben working fine for many years with old ide driver. (It
>    still works fine when I boot to the alternate ide-based kernel).
> 
> -- ide driver locks up on hpt366+new maxtor disk under heavy 
>    i/o load. I was able to copy 60GB from old to new disk without a
>    problem; however, raid reconstruction locks it up, maybe after 5-15
>    seconds.
> 
>    This probably is "hardware related"; its something that the new 
>    hard drive does. Given that its being sold at a big discount, it
>    may even be that the sellers know that this is a crappy disk. :-)
> 
>    All I want is some way of resetting the disk, and continuing on.

It would be useful to see hdparm --Istdout output for *both* disks.

> I'm stalled in debugging; I'm not sue what I'm looking for.

Sergei, do you think that testing the drive with DMA disabled may
tell us something new?

Thanks,
Bart
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