RE: [Xen-users] Dom0 crashes when serving java content on DomU

["Ross S. W. Walker" <RWalker@xxxxxxxxxxxxx>]

Matthew Tice wrote:

> Hello,  we're dealing with a very odd problem related to system crashes.
> I have a Dom0 machine running OpenSuse 10.3 64bit with 128G 
> ram.  One of the DomU's is SLES9 serving java-based web 
> content.  The problem is that when I try to pull a web page 
> from the DomU the Dom0 crashes.  The only way to bring it 
> back up is with a hard reboot.
> 
> I've enabled various boot options to try to debug but I'm not 
> getting any pertinent output.  On the Dom0 I configured the 
> following options:
> sync_console
> loglvl=debug
> guest_loglvl=debug
> nmi=fatal
> apic_verbosity=debug
> 
> I also redirected the kernel syslog-ng facility to log to a 
> file (instead of console).  I don't get any info printed 
> anywhere (console or log).  
> 
> An interesting side note is that I have another webserver 
> that just serves static content also running SLES 9 and I 
> don't have problems with that node.
> 
> To recap the system specs:
> Dom0:
> 
> # cat /etc/SuSE-release 
> openSUSE 10.3 (X86-64)
> VERSION = 10.3
> 
> # uname -a
> Linux om-vm02 2.6.22.18-203-xen #1 SMP 2008-07-10 18:20:51 
> +0200 x86_64 x86_64 x86_64 GNU/Linux
> 
> # free -m
>              total       used       free     shared    
> buffers     cached
> Mem:        129243       2748     126494          0         
> 40         59
> -/+ buffers/cache:       2649     126594
> Swap:         2055          0       2055
> 
> Four quad-core Xeon processors
> 
> DomU:
> Running Sles 9,3
> 
> Any help would be greatly appreciated

Take a look at your network drivers first. It sounds like there
may be a problem with their configuration.

Make sure you are running the latest drivers. Disable any
proprietary TCP off-loading.

-Ross

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