[libvirt] xenUnifiedDomainLookupByName error handling

[Daniel P. Berrange]

On Wed, Jan 14, 2009 at 08:03:49PM +0000, John Levon wrote:
> 
> We do:
> 
>  700     /* Not found. */
>  701     xenUnifiedError (conn, VIR_ERR_NO_DOMAIN, __FUNCTION__);
> 
> But:
> 
>  # virsh start domu-defefe
> 12:09:30.581: error : Domain not found: xenUnifiedDomainLookupByName
> libvir: Xen error : Domain not found: xenUnifiedDomainLookupByName
> libvir: Xen error : Domain not found: xenUnifiedDomainLookupByName
> error: failed to get domain 'domu-defefe'
> 
> It doesn't seem right to be reporting errors like this. What's the
> intent? Most of xenUnifiedError() seems to be internal errors, but many
> of them are just clients doing the wrong thing...

In the virsh case, it really should be just registering a callack to
disable the default fprintf() of errors, since it always prints its
own error message in a more use friendly format. We've done this in
virt-install already for the same reason.

Daniel
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