@Sylvain Bauza Sorry! please ignore the trace. I updated the issue
description and the problem should belong to nova component. Please have
a look. Thanks a lot!
** Changed in: nova
Status: Invalid => New
** Description changed:
- In our code we invoke the code as following:
+ When invoke
objects.InstanceList.get_all(context, ['metadata','system_metadata'])
- It throw the error said:
- 2015-05-19 21:52:31.222 22676 TRACE nova.scheduler.ibm.ego.ego_manager
strat = self._get_strategy(loader.strategy)
- 2015-05-19 21:52:31.222 22676 TRACE nova.scheduler.ibm.ego.ego_manager File
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/interfaces.py", line 452, in
_get_strategy
- 2015-05-19 21:52:31.222 22676 TRACE nova.scheduler.ibm.ego.ego_manager
cls = self._strategy_lookup(*key)
- 2015-05-19 21:52:31.222 22676 TRACE nova.scheduler.ibm.ego.ego_manager File
"/usr/lib64/python2.7/site-packages/sqlalchemy/orm/interfaces.py", line 507, in
_strategy_lookup
- 2015-05-19 21:52:31.222 22676 TRACE nova.scheduler.ibm.ego.ego_manager
raise Exception("can't locate strategy for %s %s" % (cls, key))
- 2015-05-19 21:52:31.222 22676 TRACE nova.scheduler.ibm.ego.ego_manager
Exception: can't locate strategy for <class
'sqlalchemy.orm.properties.ColumnProperty'> (('lazy', 'joined'),)
- 2015-05-19 21:52:31.222 22676 TRACE nova.scheduler.ibm.ego.ego_manager
- The original used: db.instance_get_all(context,
- ['metadata','system_metadata']) can worked well.
-
- Did some investigation and found the nova/objects/instance.py function
- _expected_cols(expected_attrs):
+ Then found the nova/objects/instance.py function
_expected_cols(expected_attrs):
will return list ['metadata','system_metadata', 'extra',
'extra.flavor'], then in the db query it throw the error: can't locate
strategy for <class 'sqlalchemy.orm.properties.ColumnProperty'>
(('lazy', 'joined'),)
Could anyone can help have a look? Thanks!
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https://bugs.launchpad.net/bugs/1456871
Title:
objects.InstanceList.get_all(context, ['metadata','system_metadata'])
return error can't locate strategy for %s %s" % (cls, key)
Status in OpenStack Compute (Nova):
New
Bug description:
When invoke
objects.InstanceList.get_all(context, ['metadata','system_metadata'])
Then found the nova/objects/instance.py function
_expected_cols(expected_attrs):
will return list ['metadata','system_metadata', 'extra',
'extra.flavor'], then in the db query it throw the error: can't locate
strategy for <class 'sqlalchemy.orm.properties.ColumnProperty'>
(('lazy', 'joined'),)
Could anyone can help have a look? Thanks!
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