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Re: [Xen-devel] libxl and libvirt in Fedora (rawhide)

Dario Faggioli wrote:
> On Thu, 2013-01-17 at 09:00 -0700, Jim Fehlig wrote: 
>> Dario Faggioli wrote:
>>> Hi Jim,
>>> I'm having some problems with the libvirt libxl driver you're working
>>> on. More specifically, it does not seem to be working for me, at least
>>> not in the form in which it comes out of the related Fedora package.
>>> If/When you have a minute, would it be possible to you to have a look
>>> here:
>>> https://bugzilla.redhat.com/show_bug.cgi?id=893699
>>> https://bugzilla.redhat.com/show_bug.cgi?id=893699#c10 ?
>> Thanks for the bug ref, I've made a comment there.
> Thanks. I replied myself, trying to provide some more information about
> what's going on...
>> As mentioned in the bug, the libxl driver will not load if xend is
>> running.  It appears xend is not running on your system, so hopefully
>> there is something in your libvirtd logs telling why the driver did not
>> load.
> I'm not even sure whether xend is running or not! :-( As I wrote there,
> even when I only see the xend status check, I have xm working, which
> shouldn't happen without a proper xend running, right?

For those not following in the bug, the libxl driver executes
'/usr/sbin/xend status' and refuses to load it xend is running.  The
problem here is that the status check causes xend to start!  I can't
reproduce the issue, so perhaps it is specific to the fedora packages.

> Moreover, independently from whether I install the package or not, or
> whether I kill/start xend manually, it looks indeed like the libxl
> driver is not able to load itself.

Since checking xend status starts the service and returns that it is
running, the driver won't load :).

> Where should I look for the libvirtd logs you're mentioning? I've
> checked in /var/log/libvirt/* and in /var/log/messages, without finding
> anything interesting. Should I look somewhere else? Should I pass
> additional parameter to any of the involved components?

See /etc/libvirt/libvirtd.conf for a nice set of logging controls.


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