[libvirt-users] [libvirt] libvirt 1.2.10 and latest EL6 qemu-kvm

[Kashyap Chamarthy]

[Dropping libvir list and adding libvir-users list.]

On Mon, Jan 19, 2015 at 04:12:46PM +0100, liedekef at telenet.be wrote:
> Hi all, 
> 
> I had libvirt 1.2.10 running without issues together with the qemu package 
> qemu-kvm-0.12.1.2-2.415.el6_5.14.x86_64.rpm 

That's a really old QEMU and the libvirt you're using is relatively
newer.

> Now, after updating my server, qemu-kvm became version 
> qemu-kvm-0.12.1.2-2.448.el6_6.x86_64 
> 
> And as a result, when doing 'virsh start' (virsh define worked ok), the following error occured: 
> 
> 2015-01-19 15:05:26.539+0000: 4347: error : qemuMonitorJSONCheckError:379 : internal error: unable to execute QEMU command 'qom-list': The command qom-list has not been

You seem to be hitting this bug (although the bug is for RHEL7, looks
like the same behavior):

    https://bugzilla.redhat.com/show_bug.cgi?id=1082124

Where Michal Privoznik says, it should already be fixed with these
commits in libvirt:

  730af8f2cd7bc0e4c98b97200857909f42ea817f --
  qemuMonitorJSONGetCPUx86Data: Don't fail on ancient qemus
  84f69602143551433e3e0a5226dc572ecb33c059 -- qemu: Check for presence
  of device and properities when getting CPUID
  a6a6f84af92a506f83fdecf56f292bcb89905492 -- qemu: Change return type
  of qemuMonitorGetGuestCPU() 
> 
> The only thing I could do (even downgrading libvirt to 1.2.9 didn't
> work), was to downgrade qemu-kvm to the older version again ...  Any
> hints on this? 

For the EL distrubtione you're using, I think using whatever the newest
supported combination of libvirt and QEMU should help. 


-- 
/kashyap