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Bug 1797520

Summary: [OVN] Reduce ovsdb-server notifications when health checking ovn-controller
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Daniel Alvarez Sanchez <dalvarez>
Component: ovn2.13Assignee: Lucas Alvares Gomes <lmartins>
Status: CLOSED CURRENTRELEASE QA Contact: Jianlin Shi <jishi>
Severity: high Docs Contact:
Priority: unspecified    
Version: FDP 20.ACC: ctrautma, dceara, jishi, lmartins, lucasagomes, ralongi
Target Milestone: ---Keywords: Triaged
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Last Closed: 2020-10-22 10:47:49 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 1797685    

Description Daniel Alvarez Sanchez 2020-02-03 11:09:38 UTC 
When ovn-controller signals that it is alive through its Chassis row, this change is notified to all clients connected to the SB database. In large deployments, this can create a lot of stress.

There is a proposed solution upstream [0] to make use of a Private_Chassis table where clients won't get notified of these healthchecks. It can be leveraged as well by other agetns such as OSP Networking-ovn metadata agent through an external_ids command.

More info in the commit message of the linked patch.

[0] https://patchwork.ozlabs.org/patch/899608/
Comment 2 Dumitru Ceara 2020-02-21 08:30:37 UTC 
RFC patch sent upstream by Lucas: https://patchwork.ozlabs.org/patch/1240755/