Bug 1418442

Summary: Intelligent host discovery by Scheduler should be backported
Product: Red Hat OpenStack Reporter: Dan Smith <dasmith>
Component: openstack-novaAssignee: Dan Smith <dasmith>
Status: CLOSED CANTFIX QA Contact: Prasanth Anbalagan <panbalag>
Severity: medium Docs Contact:
Priority: medium    
Version: 11.0 (Ocata)CC: berrange, dasmith, dcadzow, eglynn, kchamart, mbooth, sbauza, sferdjao, sgordon, srevivo, vromanso
Target Milestone: ---Keywords: FeatureBackport, Performance, Triaged
Target Release: 11.0 (Ocata)   
Hardware: Unspecified   
OS: Unspecified   
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Last Closed: 2018-03-28 15:22:25 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Dan Smith 2017-02-01 20:41:47 UTC 
Description of problem:

In upstream Ocata, the scheduler can do periodic host discovery, but it is not efficient and requires listing all hosts in all cells on every cycle. By backporting the performance improvement patch, we can utilize this feature on reasonably-sized deployments. It contains a database migration so must be done before OSP11 GA.
Comment 2 Dan Smith 2018-03-28 15:22:25 UTC 
This didn't get done for ocata and it's too late now because it required a database migration. It's already in 12 and was just a performance improvement.