Created attachment 916052 [details]
vdsm+engine logs

Description of problem:
Running a vm cause a libvirtError:"Failed to retrieve QoS metadata".

vdsm's log:
Thread-919::ERROR::2014-07-07 14:59:55,601::vm::319::vm.Vm::(_sampleCpuTune) vmId=`6eddfad3-b36c-4b7b-a9b1-ac5aaaf6f704`::Failed to retrieve QoS metadata
Traceback (most recent call last):
  File "/usr/share/vdsm/virt/vm.py", line 316, in _sampleCpuTune
    libvirt.VIR_DOMAIN_METADATA_ELEMENT, METADATA_VM_TUNE_URI, 0)
  File "/usr/share/vdsm/virt/vm.py", line 604, in f
    ret = attr(*args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/vdsm/libvirtconnection.py", line 111, in wrapper
    ret = f(*args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/libvirt.py", line 904, in metadata
    if ret is None: raise libvirtError ('virDomainGetMetadata() failed', dom=self)
libvirtError: argument unsupported: QEMU driver does not support <metadata> element


Version-Release number of selected component (if applicable):

ovirt-engine-3.5.0-0.0.master.20140629172257.git0b16ed7.el6.noarch
vdsm-4.16.0-3.git601f786.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
1.create vm + disk
2.run vm

Actual results:
operation is successful but a fail appears on log



Expected results:
no fail should appear

Additional info: