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SubjectRe: 2.2.5ac7 IDE-SCSI Generic SCSI issues back
On Wed, Apr 14 1999, Douglas Gilbert wrote:
> > Apr 14 15:18:26 cyrix200 kernel: scsi : aborting command due to timeout :
> > pid 7663, scsi0, channel 0, id 0, lun 0 Start/Stop Unit 00 00 00 03 00
> > Apr 14 15:18:49 cyrix200 kernel: scsi : aborting command due to timeout :
> > pid 7696, scsi0, channel 0, id 0, lun 0 Write (10) 00 00 00 00 00 00 00 10
> 00
> > Apr 14 15:18:49 cyrix200 kernel: hdc: irq timeout: status=0xd0 { Busy }
> > Apr 14 15:18:51 cyrix200 kernel: hdc: ATAPI reset complete
> > [snip]
>
> Christoph,
> It is bus reset that is wiping you out.
>
> I would like to think it is not the sg device driver because it
> remained unaltered from 2.2.5-ac2 to -ac7 (version 2.1.31) while
> 2.2.5-ac1 was only slightly different (version 2.1.30).
> Production kernels 2.2.0 through 2.2.5 all have the original sg
> driver.
>
> So the problem seems uncorrelated to changes in the sg device driver.
>
> Your note suggests the failure was induced by a change between
> 2.2.5-ac2 and -ac3 but Alan's release note says nothing about
> a change to either ide-scsi or sg in that patch (and nothing
> in that area changed in -ac4 either).
>
> Perhaps Jens may have some ideas?

I looked through the changes from -ac1 to -ac7, and found nothing
that could be causing this behavior... Nothing changed in ide relevant
sections or ide-scsi, for that matter. Is this with the same config?
You didn't enable DMA or something in between?

Doug, I also checked the sg updates and the change is really miniscule.
If the config options didn't change between the two runs, I'm baffled...

--
* Jens Axboe <axboe@image.dk>
* Linux CD-ROM Maintainer

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