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[Xen-cim] Re: Null pointer exception

To: "Subrahmanian, Raj" <raj.subrahmanian@xxxxxxxxxx>
Subject: [Xen-cim] Re: Null pointer exception
From: Jim Fehlig <jfehlig@xxxxxxxxxx>
Date: Fri, 02 Mar 2007 13:25:53 -0700
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Subrahmanian, Raj wrote:
> Jim
> I think I understand why I am getting the null pointer exception. 
> The VSManagement service parses the Virtual Systems Setting Data, in the
> function vssd2xenconfig. 
> When it looks for some property value like so
> propertyvalue = CMGetProperty(vssd, "OnReboot", status)
> And that property value does not exist, I am getting an error like this.
> RequestHandlerIFCXML::doProcess caught
> Exception:OW_COWIntrusiveReference.cpp: 62
> NULLCOWIntrusiveReferenceException: NULL COWReference dereferenced
> Clearly this shouldn't be happening. 
> Any idea how I can debug this?
>   

Have you updated your schema?  E.g. 'owmofc
Xen_ComputerSystemSettingData.mof'.  Or easier, 'make postinstall' to
ensure all classes are updated in the cimom.

Jim

> Raj
>
>
>  
>
>   
>> -----Original Message-----
>> From: Jim Fehlig [mailto:jfehlig@xxxxxxxxxx] 
>> Sent: Friday, March 02, 2007 12:18 PM
>> To: Subrahmanian, Raj
>> Cc: xen-cim@xxxxxxxxxxxxxxxxxxx
>> Subject: Re: Pywbem script
>>
>> Subrahmanian, Raj wrote:
>>     
>>> Jim
>>> Could you shoot over the latest script you are using to create vms? 
>>> There is this strange null pointer exception I am trying to 
>>>       
>> hunt down.
>>     
>>> Thanks
>>>   
>>>       
>> Some example python script attached.  Very minimal.  Would be 
>> nice to expand on it and add to repo.  Pywbem documentation: 
>> http://pywbem.sourceforge.net/documentation.shtml
>>
>> For DefineSystem, I have a collection of "cimxml conf files'. 
>>  I've attached example PV and HVM one I'm currently using.  
>> Tweak them as necessary and use the fakeclient program I sent 
>> invoke DefineSystem on target node.
>>
>> Jim
>>
>>     
>>> Raj
>>>   
>>>       

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