[Gllug] Crashing server diagnostics

[Andy Farnsworth]

Alain Williams wrote:
> On Thu, Sep 13, 2007 at 02:24:31PM +0100, Andy Farnsworth wrote:
>   
>> I have a Centos / Trixbox server that crashes randomly.  Times it 
>> crashes include copying large files to it via SCP, shutting down, etc.  
>> I am looking for help in trying to figure out what could be causing it.  
>> I have two suspicions.  Either the power supply or the modem (el cheapo 
>> X101 clone).
>>
>> Any suggestions on tracking this down?
>>     
>
> You haven't really given us much to go on: how does it crash, do you get
> any error messages ?
> Try running the box in console mode (not with an X display), you may get some
> interesting messages.
>
>   
Sorry for the short post, I got interrupted in the middle of it and just 
closed and sent it.  The box is running in console mode only (no X) and 
when I do a reboot or shutdown, the system locks with the following 
error messages (typed from the screen as I cannot find a log file that 
lists them).

<last 8 lines of messages prior to system freeze>
[<c02d26da>] sys_poll+0x240/0x24d
[<c02d26da>] __pollwait+0x0/0x95
[<c0105c64>] co_notify_resume+0x28/0x38
[<c02d26da>] work_notifysig+0x13/0x15
Code:  Bad EIP value.
 <0>Fatal exception: panic in 5 seconds
                                                                                       
[ OK ]
Kernel pnic - not syncing: Fatal exception

<end of messages and system freezes>

This is basically an asterisk server that I am running and the crashes 
are both random (i.e. the machine is sitting there doing nothing) as 
well as reproducable (i.e. always when doing a shutdown or reboot).  
This is a repurposed box and I have not yet actually setup more than a 
couple of VOIP phones on it.  No external connections in to the box and 
no peers that will be putting any load on it at this time.

What I am looking for is standard diagnostics tools and locations of log 
files etc where I might find these crash messages so that I can more 
easily search for solutions.

Andrew
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