Hi, guys.
I found something confused when I studied resource tracking in Nova. In
resource_tracker.py, the function '_update_usage_from_instances()' made a clear
reset to 'self.traced_instaces' and 'resources'. And then for each instance,
function '_update_usage_from_instance()' is called to update resources stats .
There is the question:
Because function '_update_usage_from_instances()' has made a clear reset,
every instance passed to '_update_usage_from_instance()' must be a new
instance(is_new_instance=True). And to a new instance, 'sign' is set to 1.
This's just ok. But there are a special situation that instance may be deleted
here. Other words, a instance may be meanwhile new and deleted. In my
understanding, for deleted instance, We should do nothing in resources stats.
But for deleted instance, 'sign' is set to -1, not my expected 0.
Why? Is this a bug or something?
Any help is appreciated. Thanks.
2012-11-14
hzguanqiang
_______________________________________________
Mailing list: https://launchpad.net/~openstack
Post to : [email protected]
Unsubscribe : https://launchpad.net/~openstack
More help : https://help.launchpad.net/ListHelp
