Re: [Xen-devel] [PATCH 20 of 29 RFC] libxl: introduce libxl hotplug public API functions

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Stefano Stabellini writes ("Re: [Xen-devel] [PATCH 20 of 29 RFC] libxl: 
introduce libxl hotplug public API functions"):
> On Tue, 14 Feb 2012, Ian Campbell wrote:
> > I was wondering if perhaps xl/libxl should handle these events by
> > default (using the same APIs as xldeviced uses) such that in the simple
> > case users can continue to just use xl without worrying about
> > configuring or enabling additional daemons. There would then be an
> > option to disable this if you were running xldeviced (either in dom0 or
> > in a driver dom). Perhaps a more DWIM extension would be to default to
> > running things within xl/libxl only if the backend is in dom0 and assu,e
> > xldeviced is running in backend doms != 0.
> 
> While I understand that technically is not difficult to achieve and
> doesn't add much complexity in terms of lines of code; starting daemons
> is cheap and is taken care by xencommons. I am not sure if it is worth
> introducing yet another way of doing the same thing.

This is a good point.  Also, if anyone does object to this daemon, and
we take the event-driven approach already suggested, it probably won't
be too hard to add later the short-cut to run it in-process.

So I think for now we should just have the daemonic version.

Ian.

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