[parisc-linux] Hanging with kernels >= 2.4.22

[Riccardo]

pre-scriptum: I am sending this to the list because when trying to send
an email directly to Joel I get his MTA answering I have invalid headers
(tried two times)
Joel Soete wrote:

> > I would set the tag queue as default to 8 and not to 16, to stay on the
> > safe side. Couldn't it be made configurable from the kernel
> > configuration menu?
> >
> Good idea.
It is not me that can make changes there, but it seems to me that 8 is
reasonable. Also, a kernel config option would make this parameter
obvious to everybody. I had only a small preformance decrease from 16 to
8 tags (well, disk IO sucks anyway under linux-pa and my old box). While
2 is pure sufference :)

> And you are sure that scsi id are well different and scsi chain well terminated, I supose.
Yes, the internal chain is terminated with the original HP terminator
and I removed the disk internal ones.
In fact substituing the original HP disk with another one removed the
problem (strangely enough, with the older IBM drive as a second drive I
had sometimes freezes but this problem did not appear).


> hmm, I leaved the same experience but with two external disks of exactly the same type (same supplier: hp, same manufactor:
> seagate, same product reference) but with a small firmware revision difference. Unfortunately, this pb only occured under linux
> :(. Now the disk is broken again; so no chance to test it with more recent kernel 2.4 or 2.6 :(

I used a failry recent kernel for there test, I believe 2.4.23.

The scsi code doesn't seem to be so stable and performing as compared to
hp-ux....

-Ric