Nova api fails to unpack volume metadata using cinder

On Tue, Jul 10, 2012 at 9:35 AM, Evgeniy Afonichev
<email address hidden> wrote:
> Public bug reported:
>
> File "/opt/stack/nova/nova/volume/cinder.py", line 92, in _untranslate_volume_summary_view
> nova.api.openstack for k, v in vol.metadata:
> nova.api.openstack ValueError: too many values to unpack
>
>
> Most likely, vol.metadata.items() was supposed
>
> ** Affects: cinder
> Importance: Undecided
> Status: New
>
> --
> You received this bug notification because you are a member of Cinder
> Bug Team, which is subscribed to Cinder.
> https://bugs.launchpad.net/bugs/1023027
>
> Title:
> Nova api fails to unpack volume metadata using cinder
>
> Status in Cinder:
> New
>
> Bug description:
> File "/opt/stack/nova/nova/volume/cinder.py", line 92, in _untranslate_volume_summary_view
> nova.api.openstack for k, v in vol.metadata:
> nova.api.openstack ValueError: too many values to unpack
>
>
> Most likely, vol.metadata.items() was supposed
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/cinder/+bug/1023027/+subscriptions

Hi Evgeniy,

Would you mind adding some additional information to this bug report?
Particularly what your setup was, what steps lead up to you seeing
this etc? In other words how I might reproduce?

Thanks,
John

Hi John,
Here're my steps to reproduce:

$ cat devstack/localrc
ENABLED_SERVICES+=,-n-vol,cinder,c-api,c-sch,c-vol
VOLUME_GROUP=stack-volumes
CINDER_BRANCH=folsom-2
NOVA_BRANCH=folsom-2
GLANCE_BRANCH=folsom-2
KEYSTONE_BRANCH=folsom-2
HORIZON_BRANCH=folsom-2

$ nova boot vm1 ...
$ nova volume-create --display_name volume1 1

- vm1 and volume1 are up and active/available
- add manually record to cinder.volume_metadata linked to volume1 with (key=somekey, value=somevalue)

$ nova volume-attach vm1 volume1 /dev/vdc
ERROR: The server has either erred or is incapable of performing the requested operation. (HTTP 500) (Request-ID: req-d4690e16-fcfd-49e6-9f0b-6e4491ebf347)

n-api logs show traceback
2012-07-10 21:04:36 ERROR nova.api.openstack [req-d4690e16-fcfd-49e6-9f0b-6e4491ebf347 admin admin] Caught error: too many values to unpack
2012-07-10 21:04:36 TRACE nova.api.openstack Traceback (most recent call last):
2012-07-10 21:04:36 TRACE nova.api.openstack File "/opt/stack/nova/nova/api/openstack/__init__.py", line 41, in __call__
2012-07-10 21:04:36 TRACE nova.api.openstack return req.get_response(self.application)
2012-07-10 21:04:36 TRACE nova.api.openstack File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1053, in get_response
2012-07-10 21:04:36 TRACE nova.api.openstack application, catch_exc_info=False)
2012-07-10 21:04:36 TRACE nova.api.openstack File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1022, in call_application
2012-07-10 21:04:36 TRACE nova.api.openstack app_iter = application(self.environ, start_response)
2012-07-10 21:04:36 TRACE nova.api.openstack File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 159, in __call__
2012-07-10 21:04:36 TRACE nova.api.openstack return resp(environ, start_response)
2012-07-10 21:04:36 TRACE nova.api.openstack File "/opt/stack/keystone/keystone/middleware/auth_token.py", line 185, in __call__
2012-07-10 21:04:36 TRACE nova.api.openstack return self.app(env, start_response)
2012-07-10 21:04:36 TRACE nova.api.openstack File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 159, in __call__
2012-07-10 21:04:36 TRACE nova.api.openstack return resp(environ, start_response)
2012-07-10 21:04:36 TRACE nova.api.openstack File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 159, in __call__
2012-07-10 21:04:36 TRACE nova.api.openstack return resp(environ, start_response)
2012-07-10 21:04:36 TRACE nova.api.openstack File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 159, in __call__
2012-07-10 21:04:36 TRACE nova.api.openstack return resp(environ, start_response)
2012-07-10 21:04:36 TRACE nova.api.openstack File "/usr/lib/pymodules/python2.7/routes/middleware.py", line 131, in __call__
2012-07-10 21:04:36 TRACE nova.api.openstack response = self.app(environ, start_response)
2012-07-10 21:04:36 TRACE nova.api.openstack File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 159, in __call__
2012-07-10 21:04:36 TRACE nova.api.openstack return resp(environ, start_response)
2012-07-10 21:04:36 TRACE nova.api.openstack File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 147, in __call__
2012-...

Merged into trunk in https://review.openstack.org/#/c/9608/