Hi, I'm trying to make use of huge pages as described in "http://specs.openstack.org/openstack/nova-specs/specs/kilo/implemented/virt-driver-large-pages.html". I'm running kilo as of Jan 27th.
I've allocated 10000 2MB pages on a compute node. "virsh capabilities" on that node contains: <topology> <cells num='2'> <cell id='0'> <memory unit='KiB'>67028244</memory> <pages unit='KiB' size='4'>16032069</pages> <pages unit='KiB' size='2048'>5000</pages> <pages unit='KiB' size='1048576'>1</pages> ... <cell id='1'> <memory unit='KiB'>67108864</memory> <pages unit='KiB' size='4'>16052224</pages> <pages unit='KiB' size='2048'>5000</pages> <pages unit='KiB' size='1048576'>1</pages> I then restarted nova-compute, I set "hw:mem_page_size=large" on a flavor, and then tried to boot up an instance with that flavor. I got the error logs below in nova-scheduler. Is this a bug? Feb 2 16:23:10 controller-0 nova-scheduler Exception during message handling: Cannot load 'mempages' in the base class 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher Traceback (most recent call last): 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 134, in _dispatch_and_reply 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher incoming.message)) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 177, in _dispatch 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher return self._do_dispatch(endpoint, method, ctxt, args) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 123, in _do_dispatch 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher result = getattr(endpoint, method)(ctxt, **new_args) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/oslo/messaging/rpc/server.py", line 139, in inner 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher return func(*args, **kwargs) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/scheduler/manager.py", line 86, in select_destinations 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher filter_properties) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/scheduler/filter_scheduler.py", line 67, in select_destinations 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher filter_properties) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/scheduler/filter_scheduler.py", line 138, in _schedule 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher filter_properties, index=num) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/scheduler/host_manager.py", line 391, in get_filtered_hosts 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher hosts, filter_properties, index) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/filters.py", line 77, in get_filtered_objects 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher list_objs = list(objs) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/filters.py", line 43, in filter_all 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher if self._filter_one(obj, filter_properties): 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/scheduler/filters/__init__.py", line 27, in _filter_one 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher return self.host_passes(obj, filter_properties) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/scheduler/filters/numa_topology_filter.py", line 45, in host_passes 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher limits_topology=limits)) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/virt/hardware.py", line 1161, in numa_fit_instance_to_host 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher host_cell, instance_cell, limit_cell) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/virt/hardware.py", line 851, in _numa_fit_instance_cell 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher host_cell, instance_cell) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/virt/hardware.py", line 692, in _numa_cell_supports_pagesize_request 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher avail_pagesize = [page.size_kb for page in host_cell.mempages] 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/objects/base.py", line 72, in getter 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher self.obj_load_attr(name) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/nova/objects/base.py", line 507, in obj_load_attr 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher _("Cannot load '%s' in the base class") % attrname) 2015-02-02 16:23:10.746 37521 TRACE oslo.messaging.rpc.dispatcher NotImplementedError: Cannot load 'mempages' in the base class Thanks, Chris 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