Re: hanging dell hardware

[michal urbanski <michal@antiflux.org>]

On Thu, Mar 24, 2005 at 09:45:51PM -0000, Ian Pratt wrote:
>  > It hangs, solid. No ssh, dead to the network, console dead, etc. No
> > reboot... I've come back to a hung machine after a weekend, and it was
> > still hung. 
> > 
> > Once it hangs, I can't get anything on a console or anything. Nothing
> > makes it down to the logs, either, as far as I can tell.
> 
> Please can you switch to a text console and then try an get it to hang.
> Hopefully something will come out. 
> 
> Also, please can you add 'watchdog' to the Xen command line in
> grub.conf.
>  
> > The machine is a PowerEdge 2850, the controller is a PERC 4e/Di.
> 
> Is this the standard on-board SCSI controller?
> 
> Ian

Sorry the response took so long...

anyway, it looks like it's a xen problem. I booted the machine with a
2.6.10 non-xen kernel, and had it doing heavy io for the past three
days... it stayed up.

On a text console, when it hangs I get nothing. I've added watchdog to
the relevant line in grub.conf, and that doesn't seem to do anything (it
does seem like it takes longer for it to crash, but that's probably my
imagination :)

I'm waiting for it to hang while I'm tail -f'ing various things in
/var/log... is kern.log the one I should be looking at?

The drive controller isn't the onboard one, it's an optional
dual-channel RAID controller.

-michal


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