[libvirt] [PATCH v4] libxl: define a per-domain logger.

[Cedric Bosdonnat]

On Tue, 2017-01-10 at 11:42 -0700, Jim Fehlig wrote:
> Cédric Bosdonnat wrote:
> > libxl doesn't provide a way to write one log for each domain. Thus
> > we need to demux the messages. If our logger doesn't know to which
> > domain to attribute a message, then it will write it to the default
> > log file.
> > 
> > Starting with Xen 4.9 (commit f9858025 and following), libxl will
> > write the domain ID in an easy to grab manner. The logger introduced
> > by this commit will use it to demux the libxl log messages.
> > 
> > Thanks to the default log file, this logger will also work with older
> > versions of Xen.
> > ---
> >  * v4: delay the log file opening to the first message write.
> 
> Hmm, in hindsight I shouldn't have mentioned this in V3 since we'll always have
> at least the json config written to the file correct? If so, there's really no
> reason to delay opening it. Sorry for the confusion.
> 
> I tend to prefer V3, but with the nits I pointed out there fixed :-).

Then I pushed the v3 with the changes.
--
Cedric