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SubjectRe: Linux 2.6.20-rc1
On Thu, Dec 14 2006, Alistair John Strachan wrote:
> On Thursday 14 December 2006 19:57, Linus Torvalds wrote:
> > On Thu, 14 Dec 2006, Alistair John Strachan wrote:
> > > `hddtemp' has stopped working on 2.6.20-rc1:
> >
> > Hmm. Can you do the strace on a working kernel too? For example, is it
> > that the 0x30d ioctl (which is HDIO_GET_IDENTITY) used to work? If it's a
> > SATA device, and you _used_ to use the PATA drivers, some of the old
> > IDE-only ioctl's simply don't work when used in native SATA
> > configurations.
> I've always been using sata_nv and libata. All the drives in question are SATA
> devices, no configuration change other than this kernel has taken place.
> Indeed, the configs are very similar. Find the configs, straces on both
> kernels, and the hddtemp binary (AMD64, I'm afraid) here:

Looking at the strace, it would _seem_ that an SG_IO failure could very
well be the reason for the diverged paths. And that would indicate
another bug in that area, outside of what we already fixed for

Is the hddtemp source not available?

> > If you can do a "git bisect" on this, that would help a lot.
> I'll do that if nobody comes up with anything obvious.

If you can just test 2.6.19-git1, then we'll know if it's the SG_IO
patch again.

Jens Axboe

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