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:	ovn2.13	Assignee:	Lucas Alvares Gomes <lmartins>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Jianlin Shi <jishi>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	FDP 20.A	CC:	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 Depends On:
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/