Open Stack

于 2013年09月11日 05:38, David Kang 写道:
>
> ----- Original Message -----
>> From: "Russell Bryant" <rbryant at redhat.com>
>> To: "David Kang" <dkang at isi.edu>
>> Cc: "OpenStack Development Mailing List" <openstack-dev at lists.openstack.org>
>> Sent: Tuesday, September 10, 2013 5:17:15 PM
>> Subject: Re: [openstack-dev] [nova] [pci device passthrough] fails with "NameError: global name '_' is not defined"
>> On 09/10/2013 05:03 PM, David Kang wrote:
>>> ----- Original Message -----
>>>> From: "Russell Bryant" <rbryant at redhat.com>
>>>> To: "OpenStack Development Mailing List"
>>>> <openstack-dev at lists.openstack.org>
>>>> Cc: "David Kang" <dkang at isi.edu>
>>>> Sent: Tuesday, September 10, 2013 4:42:41 PM
>>>> Subject: Re: [openstack-dev] [nova] [pci device passthrough] fails
>>>> with "NameError: global name '_' is not defined"
>>>> On 09/10/2013 03:56 PM, David Kang wrote:
>>>>>   Hi,
>>>>>
>>>>>    I'm trying to test pci device passthrough feature.
>>>>> Havana3 is installed using Packstack on CentOS 6.4.
>>>>> Nova-compute dies right after start with error "NameError: global
>>>>> name '_' is not defined".
>>>>> I'm not sure if it is due to misconfiguration of nova.conf or bug.
>>>>> Any help will be appreciated.
>>>>>
>>>>> Here is the info:
>>>>>
>>>>> /etc/nova/nova.conf:
>>>>> pci_alias={"name":"test", "product_id":"7190", "vendor_id":"8086",
>>>>> "device_type":"ACCEL"}
>>>>>
>>>>> pci_passthrough_whitelist=[{"vendor_id":"8086","product_id":"7190"}]
>>>>>
>>>>>   With that configuration, nova-compute fails with the following
>>>>>   log:
>>>>>
>>>>>    File
>>>>>    "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py",
>>>>>    line 461, in _process_data
>>>>>      **args)
>>>>>
>>>>>    File
>>>>>    "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/dispatcher.py",
>>>>>    line 172, in dispatch
>>>>>      result = getattr(proxyobj, method)(ctxt, **kwargs)
>>>>>
>>>>>    File
>>>>>    "/usr/lib/python2.6/site-packages/nova/conductor/manager.py",
>>>>>    line 567, in object_action
>>>>>      result = getattr(objinst, objmethod)(context, *args, **kwargs)
>>>>>
>>>>>    File "/usr/lib/python2.6/site-packages/nova/objects/base.py",
>>>>>    line
>>>>>    141, in wrapper
>>>>>      return fn(self, ctxt, *args, **kwargs)
>>>>>
>>>>>    File
>>>>>    "/usr/lib/python2.6/site-packages/nova/objects/pci_device.py",
>>>>>    line 242, in save
>>>>>      self._from_db_object(context, self, db_pci)
>>>>>
>>>>> NameError: global name '_' is not defined
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup Traceback (most recent call
>>>>> last):
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/threadgroup.py",
>>>>> line 117, in wait
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup x.wait()
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/threadgroup.py",
>>>>> line 49, in wait
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup return self.thread.wait()
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/eventlet/greenthread.py", line
>>>>> 166, in wait
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup return self._exit_event.wait()
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/eventlet/event.py", line 116, in
>>>>> wait
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup return hubs.get_hub().switch()
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/eventlet/hubs/hub.py", line 177,
>>>>> in switch
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup return self.greenlet.switch()
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/eventlet/greenthread.py", line
>>>>> 192, in main
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup result = function(*args,
>>>>> **kwargs)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/service.py",
>>>>> line 65, in run_service
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup service.start()
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/service.py", line 164, in
>>>>> start
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup self.manager.pre_start_hook()
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line
>>>>> 805, in pre_start_hook
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup
>>>>> self.update_available_resource(nova.context.get_admin_context())
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line
>>>>> 4773, in update_available_resource
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup
>>>>> rt.update_available_resource(context)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/lockutils.py",
>>>>> line 246, in inner
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup return f(*args, **kwargs)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/compute/resource_tracker.py",
>>>>> line 318, in update_available_resource
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup self._sync_compute_node(context,
>>>>> resources)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/compute/resource_tracker.py",
>>>>> line 347, in _sync_compute_node
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup self._update(context, resources,
>>>>> prune_stats=True)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/compute/resource_tracker.py",
>>>>> line 420, in _update
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup self.pci_tracker.save(context)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/pci/pci_manager.py", line
>>>>> 126, in save
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup dev.save(context)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/objects/base.py", line 134,
>>>>> in wrapper
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup ctxt, self, fn.__name__, args,
>>>>> kwargs)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/conductor/rpcapi.py", line
>>>>> 497, in object_action
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup objmethod=objmethod, args=args,
>>>>> kwargs=kwargs)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/rpcclient.py", line 85, in
>>>>> call
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup return
>>>>> self._invoke(self.proxy.call, ctxt, method, **kwargs)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/rpcclient.py", line 63, in
>>>>> _invoke
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup return cast_or_call(ctxt, msg,
>>>>> **self.kwargs)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/proxy.py",
>>>>> line 126, in call
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup result = rpc.call(context,
>>>>> real_topic, msg, timeout)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/__init__.py",
>>>>> line 139, in call
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup return _get_impl().call(CONF,
>>>>> context, topic, msg, timeout)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/impl_qpid.py",
>>>>> line 794, in call
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup
>>>>> rpc_amqp.get_connection_pool(conf,
>>>>> Connection))
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py",
>>>>> line 574, in call
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup rv = list(rv)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py",
>>>>> line 539, in __iter__
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup raise result
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup NameError: global name '_' is
>>>>> not
>>>>> defined
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup Traceback (most recent call
>>>>> last):
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py",
>>>>> line 461, in _process_data
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup **args)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/dispatcher.py",
>>>>> line 172, in dispatch
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup result = getattr(proxyobj,
>>>>> method)(ctxt, **kwargs)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/conductor/manager.py", line
>>>>> 567, in object_action
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup result = getattr(objinst,
>>>>> objmethod)(context, *args, **kwargs)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/objects/base.py", line 141,
>>>>> in wrapper
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup return fn(self, ctxt, *args,
>>>>> **kwargs)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup File
>>>>> "/usr/lib/python2.6/site-packages/nova/objects/pci_device.py",
>>>>> line
>>>>> 242, in save
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup self._from_db_object(context,
>>>>> self, db_pci)
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup
>>>>> 2013-09-10 12:52:23.774 14749 TRACE
>>>>> nova.openstack.common.threadgroup NameError: global name '_' is
>>>>> not
>>>>> defined
>>>> Can you file a bug for this?
>>>>
>>>> Fix here: https://review.openstack.org/45949
>>>>
>>>> --
>>>> Russell Bryant
>>>
>>>
>>>   Thanks, Russell.
>>>
>>>   The bug is reported.
>>> https://bugs.launchpad.net/nova/+bug/1223559
>>>
>>>   But, another error happens after the patch is applied. "TypeError:
>>>   expected string or buffer".
>>>
>>> ----- log message -----
>>>
>>>    File
>>>    "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py",
>>>    line 461, in _process_data
>>>      **args)
>>>
>>>    File
>>>    "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/dispatcher.py",
>>>    line 172, in dispatch
>>>      result = getattr(proxyobj, method)(ctxt, **kwargs)
>>>
>>>    File "/usr/lib/python2.6/site-packages/nova/conductor/manager.py",
>>>    line 567, in object_action
>>>      result = getattr(objinst, objmethod)(context, *args, **kwargs)
>>>
>>>    File "/usr/lib/python2.6/site-packages/nova/objects/base.py", line
>>>    141, in wrapper
>>>      return fn(self, ctxt, *args, **kwargs)
>>>
>>>    File
>>>    "/usr/lib/python2.6/site-packages/nova/objects/pci_device.py",
>>>    line 243, in save
>>>      self._from_db_object(context, self, db_pci)
>>>
>>>    File
>>>    "/usr/lib/python2.6/site-packages/nova/objects/pci_device.py",
>>>    line 150, in _from_db_object
>>>      pci_device.extra_info = jsonutils.loads(extra_info)
>>>
>>>    File
>>>    "/usr/lib/python2.6/site-packages/nova/openstack/common/jsonutils.py",
>>>    line 158, in loads
>>>      return json.loads(s)
>>>
>>>    File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads
>>>      return _default_decoder.decode(s)
>>>
>>>    File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode
>>>      obj, end = self.raw_decode(s, idx=_w(s, 0).end())
>>>
>>> TypeError: expected string or buffer
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup Traceback (most recent call last):
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/threadgroup.py",
>>> line 117, in wait
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup x.wait()
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/threadgroup.py",
>>> line 49, in wait
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup return self.thread.wait()
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/eventlet/greenthread.py", line
>>> 166, in wait
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup return self._exit_event.wait()
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/eventlet/event.py", line 116, in
>>> wait
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup return hubs.get_hub().switch()
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/eventlet/hubs/hub.py", line 177,
>>> in switch
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup return self.greenlet.switch()
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/eventlet/greenthread.py", line
>>> 192, in main
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup result = function(*args, **kwargs)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/service.py",
>>> line 65, in run_service
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup service.start()
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/service.py", line 164, in
>>> start
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup self.manager.pre_start_hook()
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line
>>> 805, in pre_start_hook
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> self.update_available_resource(nova.context.get_admin_context())
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line
>>> 4773, in update_available_resource
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> rt.update_available_resource(context)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/lockutils.py",
>>> line 246, in inner
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup return f(*args, **kwargs)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/compute/resource_tracker.py",
>>> line 318, in update_available_resource
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup self._sync_compute_node(context,
>>> resources)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/compute/resource_tracker.py",
>>> line 347, in _sync_compute_node
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup self._update(context, resources,
>>> prune_stats=True)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/compute/resource_tracker.py",
>>> line 420, in _update
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup self.pci_tracker.save(context)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/pci/pci_manager.py", line
>>> 126, in save
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup dev.save(context)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/objects/base.py", line 134,
>>> in wrapper
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup ctxt, self, fn.__name__, args,
>>> kwargs)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/conductor/rpcapi.py", line
>>> 497, in object_action
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup objmethod=objmethod, args=args,
>>> kwargs=kwargs)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/rpcclient.py", line 85, in
>>> call
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup return
>>> self._invoke(self.proxy.call, ctxt, method, **kwargs)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/rpcclient.py", line 63, in
>>> _invoke
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup return cast_or_call(ctxt, msg,
>>> **self.kwargs)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/proxy.py",
>>> line 126, in call
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup result = rpc.call(context,
>>> real_topic, msg, timeout)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/__init__.py",
>>> line 139, in call
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup return _get_impl().call(CONF,
>>> context, topic, msg, timeout)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/impl_qpid.py",
>>> line 794, in call
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup rpc_amqp.get_connection_pool(conf,
>>> Connection))
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py",
>>> line 574, in call
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup rv = list(rv)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py",
>>> line 539, in __iter__
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup raise result
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup TypeError: expected string or
>>> buffer
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup Traceback (most recent call last):
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/amqp.py",
>>> line 461, in _process_data
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup **args)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/rpc/dispatcher.py",
>>> line 172, in dispatch
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup result = getattr(proxyobj,
>>> method)(ctxt, **kwargs)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/conductor/manager.py", line
>>> 567, in object_action
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup result = getattr(objinst,
>>> objmethod)(context, *args, **kwargs)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/objects/base.py", line 141,
>>> in wrapper
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup return fn(self, ctxt, *args,
>>> **kwargs)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/objects/pci_device.py", line
>>> 243, in save
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup self._from_db_object(context,
>>> self, db_pci)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/objects/pci_device.py", line
>>> 150, in _from_db_object
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup pci_device.extra_info =
>>> jsonutils.loads(extra_info)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib/python2.6/site-packages/nova/openstack/common/jsonutils.py",
>>> line 158, in loads
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup return json.loads(s)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib64/python2.6/json/__init__.py", line 307, in loads
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup return _default_decoder.decode(s)
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup File
>>> "/usr/lib64/python2.6/json/decoder.py", line 319, in decode
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup obj, end = self.raw_decode(s,
>>> idx=_w(s, 0).end())
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup
>>> 2013-09-10 13:56:35.366 16736 TRACE
>>> nova.openstack.common.threadgroup TypeError: expected string or
>>> buffer
>> Try this:
>>
>> diff --git a/nova/objects/pci_device.py b/nova/objects/pci_device.py
>> index a83b8f3..d0a628a 100644
>> --- a/nova/objects/pci_device.py
>> +++ b/nova/objects/pci_device.py
>> @@ -145,7 +145,7 @@ class PciDevice(base.NovaPersistentObject,
>> base.NovaObject):
>> if key != 'extra_info':
>> pci_device[key] = db_dev[key]
>> else:
>> - extra_info = db_dev.get("extra_info")
>> + extra_info = db_dev.get("extra_info", '{}')
>> pci_device.extra_info = jsonutils.loads(extra_info)
>> pci_device._context = context
>> pci_device.obj_reset_changes()
>>
>>
>> --
>> Russell Bryant
>
>   The same error happens.
> The error message says "TypeError: expected string or buffer".
hi, David
could you paste the new trace to the bug ? (note it with the patch) 
that's close to the fix i think.

thanks
Yongli he
>
>   David
>
> _______________________________________________
> OpenStack-dev mailing list
> OpenStack-dev at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>
>