I'm trying to use SR-IOV in openstack havana.
After a pci device(virtual function in my case) is allocated to a vm, the status of according record in table 'nova.pci_devices' is updated to allocated.
However, when I restart the openstack services, the devices' records are updated to available again. Actually, the pci devices are allocated to vm.
I looked into the code and found the problem below.
In the __init__ function of PciDevTracker in pci/pci_manager.py , it requires node_id.
If a node_id is passed in, it will fetch pci devices information
from database, otherwise, it will create an empty devices list
However, the code initiating PciDevTracker (in compute/resource_tracker.py) never passes node_id. So it will never fetch pci devices information from database and the status will be updated to 'available' every time we restart services.
=================
Then I try do add the node id and want to see what will happen.
Then I got this error
self.pci_tracker = pci_manager.PciDevTracker(node_id=1)
File "/usr/lib/python2.6/site-packages/nova/pci/pci_manager.py", line 67, in __init__
context, node_id)
File "/usr/lib/python2.6/site-packages/nova/objects/base.py", line 106, in wrapper
args, kwargs)
File "/usr/lib/python2.6/site-packages/nova/conductor/rpcapi.py", line 492, in object_class_action
objver=objver, args=args, kwargs=kwargs)
File "/usr/lib/python2.6/site-packages/nova/rpcclient.py", line 85, in call
return self._invoke(self.proxy.call, ctxt, method, **kwargs)
File "/usr/lib/python2.6/site-packages/nova/rpcclient.py", line 63, in _invoke
return cast_or_call(ctxt, msg, **self.kwargs)
File "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/proxy.py", line 126, in call
result = rpc.call(context, real_topic, msg, timeout)
File "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/__init__.py", line 139, in call
return _get_impl().call(CONF, context, topic, msg, timeout)
File "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/impl_qpid.py", line 783, in call
rpc_amqp.get_connection_pool(conf, Connection))
File "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py", line 572, in call
rv = multicall(conf, context, topic, msg, timeout, connection_pool)
File "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py", line 558, in multicall
pack_context(msg, context)
File "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py", line 308, in pack_context
for (key, value) in context.to_dict().iteritems()])
AttributeError: 'module' object has no attribute 'to_dict'
It pass the module context to pci_device_obj.PciDeviceList.get_by_compute_node. But to_dict is a function of RequestContext in module context. It seems that it should pass a RequestContext instance instead of the module context.
https:/