[libvirt-users] Block Commit: [100 %]error: failed to pivot job for disk vda

Hello. I'm seeing this error while doing a backup of a VM. + virsh blockcommit kaltura vda --active --verbose --pivot Block Commit: [100 %]error: failed to pivot job for disk vda error: internal error: unable to execute QEMU command 'block-job-complete': The active block job for device 'drive-virtio-disk0' cannot be completed I'm on qemu 2.2.0 and libvirt-1.2.11. Does someone else see this error? Libvirt.log says: 2015-01-07 11:18:07.000+0000: 19355: warning : qemuDomainObjBeginJobInternal:1381 : Cannot start job (query, none) for domain kaltura; current job is (modify, none) owned by (19357, 0) 2015-01-07 11:18:07.000+0000: 19355: error : qemuDomainObjBeginJobInternal:1386 : Timed out during operation: cannot acquire state change lock 2015-01-07 11:18:35.556+0000: 19357: error : qemuMonitorJSONCheckError:381 : internal error: unable to execute QEMU command 'block-job-complete': The active block job for device 'drive-virtio-disk0' cannot be completed Any ideas? thanks and cheers t.