Public bug reported:
I hit this while writing a functional recreate test for bug 1713786
where the destination node during an evacuate doesn't have it's
allocations created by the scheduler. When the source node comes up
after the evacuation, it tries to remove the allocations on the source
node, which is the only one because of bug 1713786, but that results in
sending a request like this:
2017-08-30 14:45:13,495 INFO [nova.scheduler.client.report] Sending
updated allocation [{'resource_provider': {'uuid':
'7ab9dab7-65c6-4961-9403-c8fc50dedb6b'}, 'resources': {}}] for instance
dc8a686c-ad92-48f3-8594-d00c6e671a1c after removing resources for
7ab9dab7-65c6-4961-9403-c8fc50dedb6b.
And you get this stacktrace in the Placement API:
2017-08-30 14:45:13,502 ERROR [nova.api.openstack.placement.handler] Uncaught
exception
Traceback (most recent call last):
File "nova/api/openstack/placement/handler.py", line 217, in __call__
return dispatch(environ, start_response, self._map)
File "nova/api/openstack/placement/handler.py", line 144, in dispatch
return handler(environ, start_response)
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/webob/dec.py",
line 131, in __call__
resp = self.call_func(req, *args, **self.kwargs)
File "nova/api/openstack/placement/wsgi_wrapper.py", line 29, in call_func
super(PlacementWsgify, self).call_func(req, *args, **kwargs)
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/webob/dec.py",
line 196, in call_func
return self.func(req, *args, **kwargs)
File "nova/api/openstack/placement/microversion.py", line 268, in
decorated_func
return _find_method(f, version)(req, *args, **kwargs)
File "nova/api/openstack/placement/util.py", line 138, in
decorated_function
return f(req)
File "nova/api/openstack/placement/handlers/allocation.py", line 286, in
set_allocations
return _set_allocations(req, ALLOCATION_SCHEMA_V1_8)
File "nova/api/openstack/placement/handlers/allocation.py", line 252, in
_set_allocations
allocations.create_all()
File "nova/objects/resource_provider.py", line 1877, in create_all
self._set_allocations(self._context, self.objects)
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/oslo_db/api.py",
line 150, in wrapper
ectxt.value = e.inner_exc
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/oslo_utils/excutils.py",
line 220, in __exit__
self.force_reraise()
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/oslo_utils/excutils.py",
line 196, in force_reraise
six.reraise(self.type_, self.value, self.tb)
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/oslo_db/api.py",
line 138, in wrapper
return f(*args, **kwargs)
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py",
line 979, in wrapper
return fn(*args, **kwargs)
File "nova/objects/resource_provider.py", line 1835, in _set_allocations
consumer_id = allocs[0].consumer_id
IndexError: list index out of range
The schema validation on PUT /allocations requires a minimum of one provider in
the request, but it doesn't validate that there is at least one resource for
that provider:
https://github.com/openstack/nova/blob/da4083d7bc0a0c1272df35ecb12c4c2fd2102e21/nova/api/openstack/placement/handlers/allocation.py#L52-L61
** Affects: nova
Importance: Medium
Status: Triaged
** Affects: nova/pike
Importance: Undecided
Status: New
** Tags: api placement
** Also affects: nova/pike
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1714072
Title:
PUT /allocations/{consumer_id} fails with a 500 if "resources: {}"
Status in OpenStack Compute (nova):
Triaged
Status in OpenStack Compute (nova) pike series:
New
Bug description:
I hit this while writing a functional recreate test for bug 1713786
where the destination node during an evacuate doesn't have it's
allocations created by the scheduler. When the source node comes up
after the evacuation, it tries to remove the allocations on the source
node, which is the only one because of bug 1713786, but that results
in sending a request like this:
2017-08-30 14:45:13,495 INFO [nova.scheduler.client.report] Sending
updated allocation [{'resource_provider': {'uuid':
'7ab9dab7-65c6-4961-9403-c8fc50dedb6b'}, 'resources': {}}] for
instance dc8a686c-ad92-48f3-8594-d00c6e671a1c after removing resources
for 7ab9dab7-65c6-4961-9403-c8fc50dedb6b.
And you get this stacktrace in the Placement API:
2017-08-30 14:45:13,502 ERROR [nova.api.openstack.placement.handler] Uncaught
exception
Traceback (most recent call last):
File "nova/api/openstack/placement/handler.py", line 217, in __call__
return dispatch(environ, start_response, self._map)
File "nova/api/openstack/placement/handler.py", line 144, in dispatch
return handler(environ, start_response)
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/webob/dec.py",
line 131, in __call__
resp = self.call_func(req, *args, **self.kwargs)
File "nova/api/openstack/placement/wsgi_wrapper.py", line 29, in
call_func
super(PlacementWsgify, self).call_func(req, *args, **kwargs)
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/webob/dec.py",
line 196, in call_func
return self.func(req, *args, **kwargs)
File "nova/api/openstack/placement/microversion.py", line 268, in
decorated_func
return _find_method(f, version)(req, *args, **kwargs)
File "nova/api/openstack/placement/util.py", line 138, in
decorated_function
return f(req)
File "nova/api/openstack/placement/handlers/allocation.py", line 286,
in set_allocations
return _set_allocations(req, ALLOCATION_SCHEMA_V1_8)
File "nova/api/openstack/placement/handlers/allocation.py", line 252,
in _set_allocations
allocations.create_all()
File "nova/objects/resource_provider.py", line 1877, in create_all
self._set_allocations(self._context, self.objects)
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/oslo_db/api.py",
line 150, in wrapper
ectxt.value = e.inner_exc
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/oslo_utils/excutils.py",
line 220, in __exit__
self.force_reraise()
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/oslo_utils/excutils.py",
line 196, in force_reraise
six.reraise(self.type_, self.value, self.tb)
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/oslo_db/api.py",
line 138, in wrapper
return f(*args, **kwargs)
File
"/home/user/git/nova/.tox/functional/local/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py",
line 979, in wrapper
return fn(*args, **kwargs)
File "nova/objects/resource_provider.py", line 1835, in _set_allocations
consumer_id = allocs[0].consumer_id
IndexError: list index out of range
The schema validation on PUT /allocations requires a minimum of one provider
in the request, but it doesn't validate that there is at least one resource for
that provider:
https://github.com/openstack/nova/blob/da4083d7bc0a0c1272df35ecb12c4c2fd2102e21/nova/api/openstack/placement/handlers/allocation.py#L52-L61
To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1714072/+subscriptions
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