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[Jay Pipes <jaypipes@xxxxxxxxx>]

On Mon, Oct 31, 2011 at 3:25 PM, Day, Phil <philip.day@xxxxxx> wrote:
> Hi Folks,
>
> We’ve been looking into a problem which looks a lot like:
>
> https://bugs.launchpad.net/nova/+bug/855660
>
> 2011-10-21 14:13:31,035 ERROR nova.api [5bd52130-d46f-4702-b06b-9ca5045473d7
> smokeuser smokeproject] Unexpected error raised: Parent instance <FixedIp at
> 0x4e74490> is not bound to a Session; lazy load operation of attribute
> 'network' cannot proceed
> (nova.api): TRACE: Traceback (most recent call last):
> (nova.api): TRACE: File
> "/usr/lib/python2.7/dist-packages/nova/api/ec2/__init__.py", line 363, in
> __call__
> (nova.api): TRACE: result = api_request.invoke(context)
> (nova.api): TRACE: File
> "/usr/lib/python2.7/dist-packages/nova/api/ec2/apirequest.py", line 90, in
> invoke
> (nova.api): TRACE: result = method(context, **args)
> (nova.api): TRACE: File
> "/usr/lib/python2.7/dist-packages/nova/api/ec2/cloud.py", line 1195, in
> describe_instances
> (nova.api): TRACE: instance_id=instance_id)
> (nova.api): TRACE: File
> "/usr/lib/python2.7/dist-packages/nova/api/ec2/cloud.py", line 1204, in
> _format_describe_instances
> (nova.api): TRACE: return {'reservationSet': self._format_instances(context,
> **kwargs)}
> (nova.api): TRACE: File
> "/usr/lib/python2.7/dist-packages/nova/api/ec2/cloud.py", line 1309, in
> _format_instances
> (nova.api): TRACE: if fixed['network'] and use_v6:
> (nova.api): TRACE: File
> "/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/models.py", line 76, in
> __getitem__
> (nova.api): TRACE: return getattr(self, key)
> (nova.api): TRACE: File
> "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/attributes.py", line 163,
> in __get__
> (nova.api): TRACE: instance_dict(instance))
> (nova.api): TRACE: File
> "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/attributes.py", line 383,
> in get
> (nova.api): TRACE: value = callable_(passive=passive)
> (nova.api): TRACE: File
> "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/strategies.py", line 595,
> in __call__
> (nova.api): TRACE: (mapperutil.state_str(state), self.key)
> (nova.api): TRACE: DetachedInstanceError: Parent instance <FixedIp at
> 0x4e74490> is not bound to a Session; lazy load operation of attribute
> 'network' cannot proceed
> (nova.api): TRACE:

Have you tried backporting the fix for the bug you mentioned above to
your local branch? Did that have any affect?

Thanks!
-jay