[parisc-linux] SCSI problems

[parisc-linux] SCSI problems

[Riccardo Mottola]

Hello,

    I know it is impolite to ask again if you don't get an answer but... I
want to know more about my scsi problems I get on my 720.

    To sum up the situation: If  I install Debian or Gentoo on a IBM 2GB
disk the kernel will freeze when I make a new ext2 or ext3 fs. If under
gentoo I select reiser FS, the kernel will freeze during the untarring of
the distribution. Since I get absolutely no errors but just a freeze it is
difficult to know anything further (even if it is really a SCSI problem,
since I get no kernel panic, but it seems obvious to me following the
repeatable situation). I'm using serial console.
    The disk is ok, I used it on a mac, tested it low-level and formatted it
with mediainit from hp-ux. The strange thing is that on a smaller 1GB disk I
had no problems (but 1gb is too small for gentoo so I never finished the
install).

One question I have, the kernel says it usees the LASI driver. But the hp
720 "cobra" has no LASI chip, but the ASP chip using the NCR 53C700
controller. Are they compatible?

Any suggestions?

-Ric

Re: [parisc-linux] SCSI problems

[Grant Grundler]

On Wed, Oct 22, 2003 at 10:30:55AM +0200, Riccardo Mottola wrote:
> Since I get absolutely no errors but just a freeze it is
> difficult to know anything further

See http://www.parisc-linux.org/faq/kernelbug-howto.html
You might find an HPMC occurred (which killed serial console)
in the "ser pim" output from PDC "BOOT_ADMIN" prompt.

> One question I have, the kernel says it usees the LASI driver. But the hp
> 720 "cobra" has no LASI chip, but the ASP chip using the NCR 53C700
> controller. Are they compatible?

Yes, mostly. Read LASI documentation to compare chips in your 720
with what's on LASI.

grant

Re: [parisc-linux] SCSI problems

[Riccardo Mottola]

Hello,

on 10/22/03 5:43 PM, Grant Grundler at grundler@parisc-linux.org wrote:

> See http://www.parisc-linux.org/faq/kernelbug-howto.html
> You might find an HPMC occurred (which killed serial console)
> in the "ser pim" output from PDC "BOOT_ADMIN" prompt.

the how-to seems to describe exactly my problem.

I press esc at boot and enter the boot selection.

I have:

PDC ROM rev. 2.1
IODC ROM rev. 2.1 
on my 720 "cobra".

i have a preliminary menu, with A I enter in the "boot admin" menu which I
think is what is needed.

"help" displays no ser command
howewer (doing cut and paste):

BOOT_ADMIN> ser clearpim
ERROR: Unknown CONSOLE command.
BOOT_ADMIN> ser pim
ERROR: Unknown CONSOLE command.

Was that command added later? do I have an equivalent? am I in the wrong
menu? I think owners of older hardware will know better.

Regards,
    Riccardo