Thanks Adam for the testing. I have copy this error and will submit a patch to repair this issue later. Thanks & Best Regards Shi, Xiao-Lei (Bruce) Hewlett-Packard Co., Ltd. HP Servers Core Platform Software China Telephone +86 23 65683093 Mobile +86 18696583447 Email xiao-lei.shi(a)hp.com -----Original Message----- From: Adam Litke [mailto:alitke@redhat.com] Sent: Tuesday, April 22, 2014 10:28 PM To: Shi, Xiao-Lei (Bruce, HP Servers-PSC-CQ) Cc: devel(a)ovirt.org; Dan Kenigsberg Subject: [vdsm] NUMA support broken on UMA machines Hi, Commit 9d3311320f6fcf190c99068b3f566e2bf9a49d99 "caps: Collect numa information" bruce <xiao-lei.shi(a)hp.com&gt; Introduced reporting of numa-related information in the getVdsCaps verb. Unfortunately it also introduced a bug in machines without NUMA support. On my mini-dell, the getVdsCaps verb is failing with the following exception: Thread-13::ERROR::2014-04-21 11:57:09,908::BindingXMLRPC::1068::vds::(wrapper) l ibvirt error Traceback (most recent call last): File "/usr/share/vdsm/BindingXMLRPC.py", line 1061, in wrapper res = f(*args, **kwargs) File "/usr/share/vdsm/BindingXMLRPC.py", line 388, in getCapabilities ret = api.getCapabilities() File "/usr/share/vdsm/API.py", line 1193, in getCapabilities c = caps.get() File "/usr/share/vdsm/caps.py", line 458, in get caps['numaNodes'] = _getNumaTopology() File "/usr/lib64/python2.7/site-packages/vdsm/utils.py", line 958, in __call__ value = self.func(*args) File "/usr/share/vdsm/caps.py", line 189, in _getNumaTopology memInfo = _getMemoryStatsByNumaCell(int(cellIndex)) File "/usr/share/vdsm/caps.py", line 203, in _getMemoryStatsByNumaCell return libvirtconnection.get().getMemoryStats(cell, 0) File "/usr/lib64/python2.7/site-packages/vdsm/libvirtconnection.py", line 92, in wrapper ret = f(*args, **kwargs) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3405, in getMemoryStats if ret is None: raise libvirtError ('virNodeGetMemoryStats() failed', conn=self) libvirtError: internal error: NUMA isn't available on this host I guess we need to catch this error and respond appropriately. -- Adam Litke