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Re: [libvirt-users] Bug? virGetLastError() returns NULL after virDomainCreate() if Domain running already



On 02/22/2012 11:16 AM, Eric Blake wrote:
> On 02/22/2012 07:06 AM, Guido Winkelmann wrote:
>> Hi,
>>
>> As the subject line indicates, when I'm calling virDomainCreate() to start a 
>> defined domain, and that command fails because the domain is already running at 
>> that point, virGetLastError() will return NULL, instead of a proper pointer to 
>> an error code.
>> Libvirt will, however, print an error to the console:
>>
>> libvir: QEMU error : Requested operation is not valid: domain is already 
>> running
> 
> Any return of NULL without a last error set is a bug.  I'm trying to
> chase this down, and hope to have a patch soon.

I can't reproduce this.  I tested on libvirt 0.9.10, starting with an
inactive domain 'dom' and using 'virsh dumpxml dom > dom.xml; virsh
create dom.xml; virsh create dom.xml', and the second create gave me a
proper error message of "Requested operation is not valid: domain is
already active as 'dom'".

Can you post the code snippet you are using to get this situation?
Could it be that you have a different name and/or UUID in the xml from
the domain already running (my test obviously reused the same name and
uuid from what is already running).

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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