[Libvir] default hypervisor selection

[Daniel P. Berrange]

On Thu, Feb 21, 2008 at 02:51:20PM +0000, Richard W.M. Jones wrote:
> 
> I'm mostly with Dan Berrange here.  Surely an environment variable is
> the right thing to do, and then later we can add some advanced probing
> if the environment variable alone doesn't satisfy users.
> 
> The only problem I see is making the NULL case unpredictable or
> introducing unreproducible bugs.  But I guess that's not very likely.

I agree - possible, but not likely too bad - I think we'll easily have a
net win thanks to a more pleasant default end user experiance.

> Dan's patch
> (http://www.redhat.com/archives/libvir-list/2008-January/msg00234.html)
> is fine except it should include a DEBUG() statement so we have some
> chance to gather information from bug reports about what it was
> actually trying to connect to.  At the moment, the first DEBUG() isn't
> done until after the URI is parsed, and URI parsing is quite likely to
> be a failure point.

Actually in the PolicyKit fix I committed yesterday, I moved the DEBUG
statement into the virConnectOpen() method so we should see the URI
printed before any processing is done.

Dan.
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