[Libvirt-cim] On SLES 11 with SFCB Xen_HostSystem returns no instances

[Medlyn, Dayne (VSL - Ft Collins)]

Thanks Kaitlin,

We are using slim-campy-base provider as well and removing slim-campy-base enabled Xen_HostSystem precisely as you said. Disabling enumeration of Xen_HostSystem must have been added between libvirt-cim 0.4.1 and libvirt-cim 0.5.2.  

Thanks for the help.  I know have the information necessary to work through a resolution.

Dayne



> -----Original Message-----
> From: libvirt-cim-bounces at redhat.com [mailto:libvirt-cim-
> bounces at redhat.com] On Behalf Of Kaitlin Rupert
> Sent: Thursday, April 23, 2009 6:08 PM
> To: List for discussion and development of libvirt CIM
> Subject: Re: [Libvirt-cim] On SLES 11 with SFCB Xen_HostSystem returns
> no instances
> 
> Medlyn, Dayne (VSL - Ft Collins) wrote:
> > Jim,
> >
> > So you are saying that we should not use Xen_HostSystem and that it
> cannot be relied on?  I am dealing with existing code that references
> the Xen_HostSystem successfully on SLES10sp2 with libvirt-cim-0.4.1
> installed, which is now broken in SLES 11 with libvirt-cim-0.5.2.  The
> SLES 10sp2 system is running tog-Pegasus where the SLES 11 system is
> running SFCB.  I was hoping for compatibility from one release to
> another.  Perhaps the choice of using Xen_HostSystem was a bad one?
> >
> > I am trying to determine if I have found a bug in what is included in
> SLES 11 or if I may be missing some unidentified dependency or
> configurations.  Thoughts?
> >
> > Thanks for your insights.
> >
> > Dayne
> >
> >
> 
> Hi Dayne,
> 
> The Xen_HostSystem instance is a placeholder, it doesn't give an
> accurate view of the host system. If the system doesn't have a provider
> set that accurately represents the host, then libvirt-cim will generate
> an instance of Xen_HostSystem just so the association linkage works
> properly.
> 
> libvirt-cim doesn't set any of the attributes appropriately - we
> basically set values for the keys and generate the instance.  The idea
> here is that libvirt-cim represents the virtual guests and their
> resources, it doesn't represent the host system itself.  So the
> instance
> of Xen_HostSystem doesn't conform to the System Virtualization Profile.
> 
> Does your implementation need the sblim-cmpi-base package?  libvirt-cim
> will detect whether Linux_ComputerSystem is available. If it is
> available, then enumerating Xen_HostSystem is disabled. If you remove
> sblim-cmpi-base, you'll be able to enumerate Xen_HostSystem.
> 
> --
> Kaitlin Rupert
> IBM Linux Technology Center
> kaitlin at linux.vnet.ibm.com
> 
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