Failed to access /os-volumes with keystone v3 tokens

[Yang Yu]

Steps:
1. POST http://9.125.13.71:5000/v3/auth/tokens to get tokens(X-Subject-Tokens)

{
    "auth": {
        "identity": {
            "methods": [
                "password"
            ],
            "password": {
            "user": {
                "name": "sceagent",
                "password": "openstack1",
              "domain": {
                   "id": "default"
                  }
            }
            }
        },
        "scope": {
            "project": {
                "domain": {
                    "id": "default"
                },
                "name": "Public"
            }
        }
    }
}

2. GET http://9.125.13.71:8774/v2/0854e670bfd74b7697a8b42c1bc77afd/os-volumes with the token gotten in step 1

Issue:
Get code 500 in step 2
{
    "computeFault": {
        "message": "The server has either erred or is incapable of performing the requested operation.",
        "code": 500
    }
}

The error log is in file '/var/log/nova/api.log'

File "/usr/lib/python2.6/site-packages/cinderclient/service_catalog.py", line 75, in url_for
2013-07-17 02:02:16.611 4104 TRACE nova.api.openstack endpoints=matching_endpoints)
2013-07-17 02:02:16.611 4104 TRACE nova.api.openstack AmbiguousEndpoints: AmbiguousEndpoints: [{u'url': u'http://9.125.13.100:8776/v1/0854e670bfd74b7697a8b42c1bc77afd', u'region': u'regionOne', u'legacy_endpoint_id': u'13937506cb76414f9fb045e35b8b0f43', 'serviceName': None, u'interface': u'admin', u'id': u'da31b7afb36c4d63a8eb3f64145a6a93'}, {u'url': u'http://9.125.13.100:8776/v1/0854e670bfd74b7697a8b42c1bc77afd', u'region': u'regionOne', u'legacy_endpoint_id': u'13937506cb76414f9fb045e35b8b0f43', 'serviceName': None, u'interface': u'internal', u'id': u'a2d8da45891d4edf8f4792183f5ac055'}, {u'url': u'http://9.125.13.100:8776/v1/0854e670bfd74b7697a8b42c1bc77afd', u'region': u'regionOne', u'legacy_endpoint_id': u'13937506cb76414f9fb045e35b8b0f43', 'serviceName': None, u'interface': u'public', u'id': u'd1745d9550534d53bc77a87cf75f234b'}]