Re: [Xen-devel] Issue while bringing up libvirtd.service

[Praveen Kumar <kpraveen.lkml@xxxxxxxxx>]

On Fri, 2016-12-09 at 14:07 +0100, Dario Faggioli wrote:
> > 
Thanks Dario and Wei Liu.

I am able to create VMs using XL toolstack and removing old xen and
libvirt packages. I think you both were right, I had double environment
problem.

Thanks once again for your suggestions.

> On Thu, 2016-12-08 at 01:11 +0530, Praveen Kumar wrote:
> > 
> > Hi,
> > 
> Hey,
> 
> > I am new in Xen environment and trying to get VMs running with the
> > build xen code base.
> > 
> > But, am facing issue bringing up the libvirt deamon. I have
> > installed
> > latest unstable xen ( 4.9 ).
> > There seems to be a conflict in library version and because of
> > which
> > I am getting below error :
> > ...
> > Dec 08 00:44:43 kpraveen.labs.blr.novell.com libvirtd[14603]:
> > Unable
> > to configure libxl's memory management parameters
> > Dec 08 00:44:43 kpraveen.labs.blr.novell.com libvirtd[14603]:
> > Initialization of LIBXL state driver failed: no error
> > Dec 08 00:44:43 kpraveen.labs.blr.novell.com libvirtd[14603]:
> > Driver
> > state initialization failed
> > ...
> > 
> What distribution is this? In any case, if you are installing Xen
> (staging / 4.9) from the sources, and then installing libvirt's
> packages from the distro, that would not work.
> 
> In fact, most likely, libvirt packages will bring in as a dependency
> the version of Xen hypervisor and toolstack that is also packaged by
> the distro. At which point, you have two Xen environments installed
> in
> the same host, which is asking for trouble.
> 
> > 
> > I found that we have xen-libs of different version which is 4.7,
> > but
> > don't know if that is the root cause and how to upgrade that. As
> > suggested, I have also rebuild xen tree and tried reinstalling, but
> > the issue persists.
> > 
> Yep, here it is the version mismatch and double environment issue I
> was
> talking about.
> 
> > 
> > Any guidance will be very much helpful to resolve this problem .
> > Also, wanted to know, what others follow as best practices when
> > there
> > is a version change or if hit the similar problem.
> > Just FYI, I am following https://wiki.xenproject.org/wiki/Compiling
> > _X
> > en_From_Source link for compiling and installing xen.
> > 
> So, if you are able to build and install Xen from sources, you
> should,
> as a first step, verify that everything is working by creating a VM
> using the XL toolstack (`man xl', look at examples, search XL on our
> Wiki, etc).
> 
> If you want to use libvirt, I don't think you have much alternative
> than building libvirt from sources as well. If I want to test or do
> some libvirt development on upstream Xen, that is what I do, FWIW.
> 
> 

Regards,

~Praveen.

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