Open Stack

On Jan 15, 2014, at 4:34 PM, Clint Byrum <clint at fewbar.com> wrote:

> Hi Chris. Your thread may have gone unnoticed as it lacked the Nova tag.
> I've added it to the subject of this reply... that might attract them.  :)
> 
> Excerpts from Chris Friesen's message of 2014-01-15 12:32:36 -0800:
>> When we create a new instance via _build_instance() or 
>> _build_and_run_instance(), in both cases we call instance_claim() to 
>> reserve and test for resources.
>> 
>> During a cold migration I see us calling prep_resize() which calls 
>> resize_claim().
>> 
>> How come we don't need to do something like this when we live migrate an 
>> instance?  Do we track the hypervisor overhead somewhere in the instance?
>> 
>> Chris
>> 

It is a good point and it should be done.  It is effectively a bug.

Brian