[libvirt] [PATCH v3 4/4] virsh: improve waiting for block job readiness

[Peter Krempa]

On Wed, Jan 27, 2016 at 13:24:54 +1100, Michael Chapman wrote:
> After a block job hits 100%, we only need to apply a timeout waiting for
> a block job event if exactly one of the BLOCK_JOB or BLOCK_JOB_2
> callbacks were able to be registered.
> 
> If neither callback could be registered, there's clearly no need for a
> timeout.
> 
> If both callbacks were registered, then we're guaranteed to eventually
> get one of the events. The path being used by virsh must be exactly the
> source path or target device in the domain's disk definition, and these
> are the respective strings sent back in these two events.
> 
> Signed-off-by: Michael Chapman <mike at very.puzzling.org>
> ---
>  tools/virsh-domain.c | 50 ++++++++++++++++++++++++++++----------------------
>  1 file changed, 28 insertions(+), 22 deletions(-)

ACK, I had to test this one a bit to get the desired reproducibility.
I've also re-verified the claim that block job name will be matched only
to the extent to what libvirt returns in the event, thus this change
should be okay.

I'll push the series in a while. Thanks for keeping through review.

Peter
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