Reviewed: https://review.openstack.org/399002
Committed:
https://git.openstack.org/cgit/openstack/nova/commit/?id=6af4b9b4daea50247b31e7eaddc0a5da92430d33
Submitter: Jenkins
Branch: master
commit 6af4b9b4daea50247b31e7eaddc0a5da92430d33
Author: bhagyashris <bhagyashri.shew...@nttdata.com>
Date: Wed Nov 30 20:45:54 2016 +0530
Handle maximum limit in schema for int and float type parameters
Create/update inventory APIs returns 500 error if you pass value
greater than db.MAX_INT (2147483647) for total, reserved, min_unit,
max_unit, step_size int type parameters and db.SQL_SP_FLOAT_MAX
(3.40282e+38) for allocation_ratio.
Added maximum limit check in schema to ensure value is not greater than
maximum limit permitted by db for all mentioned parameters.
Closes-Bug: #1642484
Change-Id: I5b8c3c175ca617ae7bb82b81b0fe608ae1755b72
** Changed in: nova
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1642484
Title:
create/update inventory placement APIs raises HTTP 500 Internal Server
Error when int and float type parameters are greater than max limit
Status in OpenStack Compute (nova):
Fix Released
Bug description:
Create/update inventory APIs raises HTTP 500 Internal Server Error when
total, reserved, min_unit,
max_unit, step_size int type and allocation_ratio float type parameters are
greater than max limit
Steps to reproduce:
1. Passed int type total parameter value greater than db.MAX_INT
(2147483647)
$ curl -g -i -X POST
http://10.232.48.200/placement/resource_providers/e4f71c78-f988-4bd6-a372-d6be5102ad61/inventories
-H "Content-Type: application/json" -H "X-Auth-Token:
5b9f0a1ec5554d779747000f886a573d" -d '{"resource_class": "DISK_GB",
"total": 20485454522222222222222222222222222, "reserved": 512,
"min_unit": 10, "max_unit": 1024, "step_size": 10, "allocation_ratio":
1.0}'
Output:
HTTP/1.1 500 Internal Server Error
Date: Tue, 08 Nov 2016 11:03:29 GMT
Server: Apache/2.4.7 (Ubuntu)
x-openstack-request-id: req-f929b916-5638-4a15-963f-3a6d816243b1
Content-Length: 128
Connection: close
Content-Type: application/json; charset=UTF-8
{"computeFault": {"message": "The server has either erred or is
incapable of performing the requested operation.", "code": 500}}
Error log:
2016-11-17 12:03:42.676 TRACE nova.api.openstack Traceback (most recent call
last):
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/
__init__.py", line 88, in __call__
2016-11-17 12:03:42.676 TRACE nova.api.openstack return
req.get_response(self.applicatio
n)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/request.py", line 1299, in send
2016-11-17 12:03:42.676 TRACE nova.api.openstack application,
catch_exc_info=False)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/request.py", line 1263, in call_application
2016-11-17 12:03:42.676 TRACE nova.api.openstack app_iter =
application(self.environ, st
art_response)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/dec.py", line 130, in __call__
2016-11-17 12:03:42.676 TRACE nova.api.openstack resp =
self.call_func(req, *args, **sel
f.kwargs)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/dec.py", line 195, in call_func
2016-11-17 12:03:42.676 TRACE nova.api.openstack return self.func(req,
*args, **kwargs)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/
placement/microversion.py", line 103, in __call__
2016-11-17 12:03:42.676 TRACE nova.api.openstack response =
req.get_response(self.applic
ation)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/request.py", line 1299, in send
2016-11-17 12:03:42.676 TRACE nova.api.openstack application,
catch_exc_info=False)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/request.py", line 1263, in call_application
2016-11-17 12:03:42.676 TRACE nova.api.openstack app_iter =
application(self.environ, start_response)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/placement/handler.py", line 188, in __call__
2016-11-17 12:03:42.676 TRACE nova.api.openstack return dispatch(environ,
start_response, self._map)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/placement/handler.py", line 111, in dispatch
2016-11-17 12:03:42.676 TRACE nova.api.openstack return handler(environ,
start_response)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
2016-11-17 12:03:42.676 TRACE nova.api.openstack resp =
self.call_func(req, *args, **self.kwargs)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
2016-11-17 12:03:42.676 TRACE nova.api.openstack return self.func(req,
*args, **kwargs)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/placement/util.py", line 133, in
decorated_function
2016-11-17 12:03:42.676 TRACE nova.api.openstack return f(req)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/placement/handlers/inventory.py", line 212,
in create_inventory
2016-11-17 12:03:42.676 TRACE nova.api.openstack
resource_provider.add_inventory(inventory)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/oslo_versionedobjects/base.py", line
226, in wrapper
2016-11-17 12:03:42.676 TRACE nova.api.openstack return fn(self, *args,
**kwargs)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/opt/stack/nova/nova/objects/resource_provider.py", line 359, in add_inventory
2016-11-17 12:03:42.676 TRACE nova.api.openstack
_add_inventory(self._context, self, inventory)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py",
line 824, in wrapper
2016-11-17 12:03:42.676 TRACE nova.api.openstack return fn(*args,
**kwargs)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/opt/stack/nova/nova/objects/resource_provider.py", line 208, in _add_inventory
2016-11-17 12:03:42.676 TRACE nova.api.openstack conn, rp, inv_list,
set([rc_id]))
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/opt/stack/nova/nova/objects/resource_provider.py", line 124, in
_add_inventory_to_provider
2016-11-17 12:03:42.676 TRACE nova.api.openstack conn.execute(ins_stmt)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 914,
in execute
2016-11-17 12:03:42.676 TRACE nova.api.openstack return meth(self,
multiparams, params)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/sql/elements.py", line 323,
in _execute_on_connection
2016-11-17 12:03:42.676 TRACE nova.api.openstack return
connection._execute_clauseelement(self, multiparams, params)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1010,
in _execute_clauseelement
2016-11-17 12:03:42.676 TRACE nova.api.openstack compiled_sql,
distilled_params
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1146,
in _execute_context
2016-11-17 12:03:42.676 TRACE nova.api.openstack context)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1337,
in _handle_dbapi_exception
2016-11-17 12:03:42.676 TRACE nova.api.openstack
util.raise_from_cause(newraise, exc_info)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/compat.py", line 202,
in raise_from_cause
2016-11-17 12:03:42.676 TRACE nova.api.openstack reraise(type(exception),
exception, tb=exc_tb, cause=cause)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1139,
in _execute_context
2016-11-17 12:03:42.676 TRACE nova.api.openstack context)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/default.py", line
450, in do_execute
2016-11-17 12:03:42.676 TRACE nova.api.openstack
cursor.execute(statement, parameters)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/cursors.py", line 166, in
execute
2016-11-17 12:03:42.676 TRACE nova.api.openstack result =
self._query(query)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/cursors.py", line 322, in _query
2016-11-17 12:03:42.676 TRACE nova.api.openstack conn.query(q)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 835, in
query
2016-11-17 12:03:42.676 TRACE nova.api.openstack self._affected_rows =
self._read_query_result(unbuffered=unbuffered)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 1019, in
_read_query_result
2016-11-17 12:03:42.676 TRACE nova.api.openstack result.read()
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 1302, in
read
2016-11-17 12:03:42.676 TRACE nova.api.openstack first_packet =
self.connection._read_packet()
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 981, in
_read_packet
2016-11-17 12:03:42.676 TRACE nova.api.openstack packet.check_error()
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 393, in
check_error
2016-11-17 12:03:42.676 TRACE nova.api.openstack
err.raise_mysql_exception(self._data)
2016-11-17 12:03:42.676 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/err.py", line 107, in
raise_mysql_exception
2016-11-17 12:03:42.676 TRACE nova.api.openstack raise errorclass(errno,
errval)
2016-11-17 12:03:42.676 TRACE nova.api.openstack DBDataError:
(pymysql.err.DataError) (1264, u"Out of range value for column 'total' at row
1") [SQL: u'INSERT INTO inventories (created_at, resource_provider_id,
resource_class_id, total, reserved, min_unit, max_unit, step_size,
allocation_ratio) VALUES (%(created_at)s, %(resource_provider_id)s,
%(resource_class_id)s, %(total)s, %(reserved)s, %(min_unit)s, %(max_unit)s,
%(step_size)s, %(allocation_ratio)s)'] [parameters: {'allocation_ratio': 1.0,
'max_unit': 1024, 'reserved': 512, 'created_at': datetime.datetime(2016, 11,
17, 6, 33, 42, 668201), 'step_size': 10, 'min_unit': 10,
'resource_provider_id': 3, 'resource_class_id': 2, 'total':
20485454522222222222222222222222222L}]
2. Passed float type allocation_ratio parameter value greater than
db.SQL_SP_FLOAT_MAX (3.40282e+38)
$ curl -g -i -X POST
http://10.232.48.200/placement/resource_providers/e4f71c78-f988-4bd6-a372-d6be5102ad61/inventories
-H "Content-Type: application/json" -H "X-Auth-Token:
d4f9623d1b294ed2821d996bbed1ef7a" -d '{"resource_class": "DISK_GB", "total":
1024, "reserved": 512, "min_unit": 10, "max_unit": 1024, "step_size": 10,
"allocation_ratio": 3.40282e+40}'
Output:
HTTP/1.1 500 Internal Server Error
Date: Thu, 17 Nov 2016 06:38:44 GMT
Server: Apache/2.4.7 (Ubuntu)
x-openstack-request-id: req-06b36d98-bb0a-4ae8-a9a4-3c2981f538a3
Content-Length: 128
Connection: close
Content-Type: application/json; charset=UTF-8
{"computeFault": {"message": "The server has either erred or is
incapable of performing the requested operation.", "code": 500}}
Error log:
2016-11-17 12:08:44.239 TRACE nova.api.openstack Traceback (most recent call
last):
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/
__init__.py", line 88, in __call__
2016-11-17 12:08:44.239 TRACE nova.api.openstack return
req.get_response(self.applicatio
n)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/request.py", line 1299, in send
2016-11-17 12:08:44.239 TRACE nova.api.openstack application,
catch_exc_info=False)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/request.py", line 1263, in call_application
2016-11-17 12:08:44.239 TRACE nova.api.openstack app_iter =
application(self.environ, st
art_response)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/dec.py", line 130, in __call__
2016-11-17 12:08:44.239 TRACE nova.api.openstack resp =
self.call_func(req, *args, **sel
f.kwargs)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/dec.py", line 195, in call_func
2016-11-17 12:08:44.239 TRACE nova.api.openstack return self.func(req,
*args, **kwargs)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/
placement/microversion.py", line 103, in __call__
2016-11-17 12:08:44.239 TRACE nova.api.openstack response =
req.get_response(self.applic
ation)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/request.py", line 1299, in send
2016-11-17 12:08:44.239 TRACE nova.api.openstack application,
catch_exc_info=False)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/request.py", line 1263, in call_application
2016-11-17 12:08:44.239 TRACE nova.api.openstack app_iter =
application(self.environ, st
art_response)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/
placement/handler.py", line 188, in __call__
2016-11-17 12:08:44.239 TRACE nova.api.openstack return dispatch(environ,
start_response
, self._map)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/
placement/handler.py", line 111, in dispatch
2016-11-17 12:08:44.239 TRACE nova.api.openstack return handler(environ,
start_response)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/dec.py", line 130, in __call__
2016-11-17 12:08:44.239 TRACE nova.api.openstack resp =
self.call_func(req, *args, **sel
f.kwargs)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packa
ges/webob/dec.py", line 195, in call_func
2016-11-17 12:08:44.239 TRACE nova.api.openstack return self.func(req,
*args, **kwargs)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/placement/util.py", line 133, in
decorated_function
2016-11-17 12:08:44.239 TRACE nova.api.openstack return f(req)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/placement/handlers/inventory.py", line 212,
in create_inventory
2016-11-17 12:08:44.239 TRACE nova.api.openstack
resource_provider.add_inventory(inventory)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/oslo_versionedobjects/base.py", line
226, in wrapper
2016-11-17 12:08:44.239 TRACE nova.api.openstack return fn(self, *args,
**kwargs)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/opt/stack/nova/nova/objects/resource_provider.py", line 359, in add_inventory
2016-11-17 12:08:44.239 TRACE nova.api.openstack
_add_inventory(self._context, self, inventory)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py",
line 824, in wrapper
2016-11-17 12:08:44.239 TRACE nova.api.openstack return fn(*args,
**kwargs)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/opt/stack/nova/nova/objects/resource_provider.py", line 208, in _add_inventory
2016-11-17 12:08:44.239 TRACE nova.api.openstack conn, rp, inv_list,
set([rc_id]))
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/opt/stack/nova/nova/objects/resource_provider.py", line 124, in
_add_inventory_to_provider
2016-11-17 12:08:44.239 TRACE nova.api.openstack conn.execute(ins_stmt)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 914,
in execute
2016-11-17 12:08:44.239 TRACE nova.api.openstack return meth(self,
multiparams, params)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/sql/elements.py", line 323,
in _execute_on_connection
2016-11-17 12:08:44.239 TRACE nova.api.openstack return
connection._execute_clauseelement(self, multiparams, params)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1010,
in _execute_clauseelement
2016-11-17 12:08:44.239 TRACE nova.api.openstack compiled_sql,
distilled_params
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1146,
in _execute_context
2016-11-17 12:08:44.239 TRACE nova.api.openstack context)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1337,
in _handle_dbapi_exception
2016-11-17 12:08:44.239 TRACE nova.api.openstack
util.raise_from_cause(newraise, exc_info)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/compat.py", line 202,
in raise_from_cause
2016-11-17 12:08:44.239 TRACE nova.api.openstack reraise(type(exception),
exception, tb=exc_tb, cause=cause)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1139,
in _execute_context
2016-11-17 12:08:44.239 TRACE nova.api.openstack context)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/default.py", line
450, in do_execute
2016-11-17 12:08:44.239 TRACE nova.api.openstack
cursor.execute(statement, parameters)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/cursors.py", line 166, in
execute
2016-11-17 12:08:44.239 TRACE nova.api.openstack result =
self._query(query)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/cursors.py", line 322, in _query
2016-11-17 12:08:44.239 TRACE nova.api.openstack conn.query(q)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 835, in
query
2016-11-17 12:08:44.239 TRACE nova.api.openstack self._affected_rows =
self._read_query_result(unbuffered=unbuffered)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 1019, in
_read_query_result
2016-11-17 12:08:44.239 TRACE nova.api.openstack result.read()
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 1302, in
read
2016-11-17 12:08:44.239 TRACE nova.api.openstack first_packet =
self.connection._read_packet()
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 981, in
_read_packet
2016-11-17 12:08:44.239 TRACE nova.api.openstack packet.check_error()
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 393, in
check_error
2016-11-17 12:08:44.239 TRACE nova.api.openstack
err.raise_mysql_exception(self._data)
2016-11-17 12:08:44.239 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/pymysql/err.py", line 107, in
raise_mysql_exception
2016-11-17 12:08:44.239 TRACE nova.api.openstack raise errorclass(errno,
errval)
2016-11-17 12:08:44.239 TRACE nova.api.openstack DBDataError:
(pymysql.err.DataError) (1264, u"Out of range value for column
'allocation_ratio' at row 1") [SQL: u'INSERT INTO inventories (created_at,
resource_provider_id, resource_class_id, total, reserved, min_unit, max_unit,
step_size, allocation_ratio) VALUES (%(created_at)s, %(resource_provider_id)s,
%(resource_class_id)s, %(total)s, %(reserved)s, %(min_unit)s, %(max_unit)s,
%(step_size)s, %(allocation_ratio)s)'] [parameters: {'allocation_ratio':
3.40282e+40, 'total': 1024, 'reserved': 512, 'created_at':
datetime.datetime(2016, 11, 17, 6, 38, 44, 233809), 'step_size': 10,
'resource_provider_id': 3, 'min_unit': 10, 'resource_class_id': 2, 'max_unit':
1024}]
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