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

[Franky Van Liedekerke]

Kashyap Chamarthy <kchamart at redhat.com> schreef op 19 januari 2015 19:00:23 CET:
>[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. 

Yes, I know it's old but there is no newer qemu-kvm package on centos6. But the bug you reported is not the same: it is about qom-list, not qom-get and also: it workerd fine with an older qemu-kvm package. So I guess something in the newer qemu-kvm package has changed and libvirt is not yet taking that into account. I"d be more than happy to update qemu-kvm to something newer, but that requires a lot more work ...

Franky

Franky