I just had the same issue happen to me.

Traceback:


2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8] Traceback (most recent call last):
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1103, in _spawn
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     block_device_info)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 1521, in spawn
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     admin_pass=admin_password)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 1807, in _create_image
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     project_id=instance['project_id'])
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/imagebackend.py", line 158, in cache
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     *args, **kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/imagebackend.py", line 258, in create_image
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     prepare_template(target=base, *args, **kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/openstack/common/lockutils.py", line 228, in inner
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     retval = f(*args, **kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/imagebackend.py", line 146, in call_if_not_exists
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     fetch_func(target=target, *args, **kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/utils.py", line 593, in fetch_image
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     images.fetch_to_raw(context, image_id, target, user_id, project_id)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/virt/images.py", line 207, in fetch_to_raw
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     fetch(context, image_href, path_tmp, user_id, project_id)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/virt/images.py", line 202, in fetch
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     image_service.download(context, image_id, image_file)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/image/glance.py", line 278, in download
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     _reraise_translated_image_exception(image_id)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/image/glance.py", line 276, in download
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     image_chunks = self._client.call(context, 1, 'data', image_id)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/nova/image/glance.py", line 182, in call
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     return getattr(client.images, method)(*args, **kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glanceclient/v1/images.py", line 117, in data
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     % urllib.quote(image_id))
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glanceclient/common/http.py", line 260, in raw_request
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     return self._http_request(url, method, **kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glanceclient/common/http.py", line 221, in _http_request
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     raise exc.from_response(resp, body_str)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8] HTTPInternalServerError: Traceback (most recent call last):
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/eventlet/wsgi.py", line 383, in handle_one_response
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     result = self.application(self.environ, start_response)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     resp = self.call_func(req, *args, **self.kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     return self.func(req, *args, **kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glance/common/wsgi.py", line 362, in __call__
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     response = req.get_response(self.application)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1296, in send
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     application, catch_exc_info=False)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1260, in call_application
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     app_iter = application(self.environ, start_response)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/keystoneclient/middleware/auth_token.py", line 450, in __call__
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     return self.app(env, start_response)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     resp = self.call_func(req, *args, **self.kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     return self.func(req, *args, **kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glance/common/wsgi.py", line 362, in __call__
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     response = req.get_response(self.application)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1296, in send
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     application, catch_exc_info=False)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1260, in call_application
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     app_iter = application(self.environ, start_response)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/paste/urlmap.py", line 203, in __call__
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     return app(environ, start_response)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     return resp(environ, start_response)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/routes/middleware.py", line 131, in __call__
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     response = self.app(environ, start_response)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     return resp(environ, start_response)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     resp = self.call_func(req, *args, **self.kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     return self.func(req, *args, **kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glance/common/wsgi.py", line 569, in __call__
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     request, **action_args)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glance/common/wsgi.py", line 586, in dispatch
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     return method(*args, **kwargs)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glance/api/v1/images.py", line 323, in show
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     image_meta['location'])
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glance/api/v1/images.py", line 299, in _get_from_store
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     image_data, image_size = get_from_backend(context, where)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glance/store/__init__.py", line 227, in get_from_backend
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     return store.get(loc)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glance/store/http.py", line 124, in get
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     conn, resp, content_length = self._query(location, 'GET')
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]   File "/usr/lib/python2.7/dist-packages/glance/store/http.py", line 165, in _query
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]     raise exception.BadStoreUri(loc.path, reason)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8] BadStoreUri: /precise/20130711/precise-server-cloudimg-amd64-disk1.img
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]  (HTTP 500)
2013-07-23 21:12:45.499 1319 TRACE nova.compute.manager [instance: 4cf71433-9a45-4b20-aeff-be5116c60aa8]