[openstack-dev] [nova] [scheduler] select_destinations() behavior

Lisa Zangrando lisa.zangrando at pd.infn.it
Wed Apr 8 09:01:08 UTC 2015

Dear all,

just a question about the behavior of select_destinations() in Icehouse: 
this method has to select and consume resources or just select them 
without consuming?
I'm asking you because if I invoke such method for testing the resource 
availability and only when the result is OK I call run_instance(), the 
scheduler's filters see a wrong host state (e.g. wrong vcpus_used). This 
is because both methods use _schedule() which consumes resources 

Is this feature intentional?

Thanks in advance.

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