Re: V480 hanging ...

From: Eric Saxe (esaxe_at_hotmail.com)
Date: 12/19/03 

Date: 18 Dec 2003 23:11:00 -0800

"Thillier Pierre-Yves \(IFF DCSA IT\)" <Pierre-Yves.Thillier@infineon.com> wrote in message news:<bqqa7f$mhp$1@newssrv.muc.infineon.com>...
> Hi all,
>
> I'm facing a very nasty problem :
> I have a V480 machine (4 CPUs, 16GB mem) installed with the latest release
> of Solaris8 (HW07/03) with all the latest patches available on the Sunsolve
> WWW (including the latest OBP downloaded). When this machine is a little CPU
> stressed (~15 minutes after the boot start), it hangs completely causing the
> system to lock up, which would then require a power cycle...
> When I restart the server, I have no error messages ... All the diags passed
> on the OBP are ok ...
>
> I have 13 others V480 (same hardware configuration) but running Solaris8
> (HW02/02) with 108528-17 kernel patch.
>
> The SUN support is helpless because they do not want to change anything on
> it without having any indication of the failure ...I have E250 and V440
> machines running exactly the same installation without any problem ....
>
> Is anybody having any idea ???
>
> Thanks in advance and best regards,
>
> Pierre-Yves Thillier

Assuming this isn't a hardware isse...
Getting a stack backtrace and threadlist dump would be helpful in
figuring what's causing your system to hang. Try booting under kadb
with:
        # reboot 'kadb -D kernel/sparcv9/unix'

When the system hangs, do a "stop-a" (or equivalent) to drop down into
the kernel debugger. At the kadb prompt get a stacktrace with "$c".
You can dump the threadlist with "$<threadlist", and take a crash dump
with "$<systemdump". I think Sun support would find this data helpful.

Hope this helps,
-Eric

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