[parisc-linux] [newbie] Where to start from?

[parisc-linux] [newbie] Where to start from?

[Bartlomiej Ochman]

Hello.

For some time now, I installed debian/testing on some spare C200+.
I didn't have much time to play around with it until now. Recently I 
discovered, it hangs completly, without any message, under heavy disc 
load (eg. bzip2 -cd kernel-source-2.6.8.tar.bz | tar xf -, or apt-get 
upgrade cycle).

As I am not familiar with hppa architecture, where should I start to 
snoop from? I've tried both 2.4.x and 2.6.x kernels, both stock and 
custom compiled and they both behave the same way.

TIA,
BO
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Re: [parisc-linux] [newbie] Where to start from?

[Bartlomiej Ochman]

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Joel Soete wrote:

> Just to be sure that I well understand: do you mean that you tried the 
> same operation when runing 2.4.x and 2.6.x?
Yes, I tried to untar kernel source both under 2.4 and 2.6. No 
difference, if it was stock, or custom compiled kernel. It hangs 
randomly under heavy disc load.

> The very first step would be that you send us a dmesg.
Attached. This particular kernel seems to be most stable on my machine, 
which surprises me after few months on the list.

> As it seems to be a disk pb: check the scsi chain [...]
I've double checked this, but everything seems to be fine.

> If you still have a diagnostic hp cd, boot with this one and check the 
> disks.
I'll try to figure out this, but I'm afraid the only CDs we have are 
with HP-UX 10.20 :(

This machine worked as network monitoring station with HP-UX/HP OV on 
it, it has never reported any problems with any disk.

Regards,
BO

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Re: [parisc-linux] [newbie] Where to start from?

[Joel Soete]

Tx BO,


Bartlomiej Ochman wrote:
> Joel Soete wrote:
> 
>> Just to be sure that I well understand: do you mean that you tried the 
>> same operation when runing 2.4.x and 2.6.x?
> 
> Yes, I tried to untar kernel source both under 2.4 and 2.6. No 
> difference, if it was stock, or custom compiled kernel. It hangs 
> randomly under heavy disc load.
> 
mmm in normal operation, can the system run severall hours without pb?
(in case of over heating (fan hs), system quartz failure, ...)

And when system hung, if you wait some minutes (about 3 min iirc), don't you read SCSI BUS RESET messages at the console?

That said, it would make me thought to a pb I encounter with my c110 (exactely the same decription) but the driver pb was 
ncr53c720 (not concerned here) and for some 2.6 only (no pb with 2.4)
>> The very first step would be that you send us a dmesg.
> 
> Attached. This particular kernel seems to be most stable on my machine, 
mmm I just noticed:
...
Cujo version 2.0 found at 0xf1000000
Enabling Cujo 2.0 bug workaround
Don't recognise Cujo at address 0xf1000000, not enabling workaround
Cujo: No PCI devices enabled.
...

duno if it's important or not?

> 
> I've double checked this, but everything seems to be fine.
> 
Nice :)

>> If you still have a diagnostic hp cd, boot with this one and check the 
>> disks.
> 
> I'll try to figure out this, but I'm afraid the only CDs we have are 
> with HP-UX 10.20 :(
> 
Iirc it should stand on "hpux Support+" cd

> This machine worked as network monitoring station with HP-UX/HP OV on 
> it, it has never reported any problems with any disk.
> 
Trust me this logic has no sence in electronic: 3 weeks ago we (I mean an Hp engineer) power off a N system to add a FC card, when 
we try to restart, ...
too bad the boot disk was definitively HS (even thought we check it carefully with mstm before shutdown: the disk never presents 
any pb before?)

That said, the final step is to 'TOC' your system when it hung (do you know the bleue button behind your box?)
then grab the 'ser piminfo' and analyse what you grab on your system when it reboot with 
<http://cvs.parisc-linux.org/build-tools/dump_analyser.sh>

hth,
	Joel
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Re: [parisc-linux] [newbie] Where to start from?

[Bartlomiej Ochman]

Joel Soete wrote:

> mmm in normal operation, can the system run severall hours without pb?

Not only hours, but weeks or months. I didn't have troubles during 
instalation, I think 1.5 years ago, when the disks worked hard too. I 
also think, everything started when glibc upgraded to 2.3... and "old" 
sarge with glibc 2.2 and kernel around 2.4.18 had worked without that 
problem.

> And when system hung, if you wait some minutes (about 3 min iirc), don't 
> you read SCSI BUS RESET messages at the console?
Nothing like that. It dies completly, heart stops beating (all diodes on 
the front panel stops blinking). It doesn't respond to anything.

> Trust me this logic has no sence in electronic: 3 weeks ago we (I mean 
> an Hp engineer) power off a N system to add a FC card, when we try to 
> restart, ...
Yeah, I know. But somehow I feel, this is not hardware-related 
problem... There shuould be some symptoms of disk related problems in 
the dmesg after few weeks of working, but I have nothing like that.

> That said, the final step is to 'TOC' your system when it hung (do you 
> know the bleue button behind your box?)
No?

> then grab the 'ser piminfo' and analyse what you grab on your system 
> when it reboot with 
> <http://cvs.parisc-linux.org/build-tools/dump_analyser.sh>
I'll try this, but not before October or so. I'm currently rather busy 
with my MSc final exam.

Thanks,
BO
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Re: [parisc-linux] [newbie] Where to start from?

[Grant Grundler]

On Wed, Sep 01, 2004 at 03:23:47PM +0200, Bartlomiej Ochman wrote:
> Recently I 
> discovered, it hangs completly, without any message, under heavy disc 
> load (eg. bzip2 -cd kernel-source-2.6.8.tar.bz | tar xf -, or apt-get 
> upgrade cycle).
> 
> As I am not familiar with hppa architecture, where should I start to 
> snoop from?

Bartlomiej,
the things we need to know are in this FAQ:
	http://www.parisc-linux.org/faq/kernelbug-howto.html

BTW, please don't compress files you attach - the mail archive
can't search through them.

thanks,
grant
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