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Bug 1995117

Summary:	[OVN][VXLAN] VLAN Transparency does not work with VXLAN
Product:	Red Hat OpenStack	Reporter:	Eduardo Olivares <eolivare>
Component:	python-networking-ovn	Assignee:	Ihar Hrachyshka <ihrachys>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Eduardo Olivares <eolivare>
Severity:	high	Docs Contact:
Priority:	high
Version:	16.2 (Train)	CC:	apevec, ekuris, jlibosva, lhh, majopela, scohen, twilson
Target Milestone:	z4	Keywords:	TestOnly, Triaged
Target Release:	16.2 (Train on RHEL 8.4)
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1997126 (view as bug list)		Environment:
Last Closed:	2024-05-23 13:50:56 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1997126

Description Eduardo Olivares 2021-08-18 13:27:18 UTC

Description of problem:
Many VLAN Transparency Tempest tests fail in the OSP16.2 VXLAN downstream CI job. This is not a regression, it probably never worked. We added the VLAN Transparency tests to the 16.2 OVN jobs recently. They pass on other configurations (geneve and vlan network types).

Results with RHOS-16.2-RHEL-8-20210804.n.0: [1]
Results with RHOS-16.2-RHEL-8-20210811.n.1: [2]

The VLAN Transparent VXLAN tenant networks are created successfully, but there is no connectivity between the VLAN interfaces created on the VM instances.

The number of VLAN Transparency tests failing varies slightly between the jobs. I need to double check, but I think the tests pass when the two VM instances are spawned on a single compute node and fail when they are deployed on different computes.

I will install a server with OVN+VXLAN and will reproduce this issue in order to provide more information.

[1] https://rhos-ci-jenkins.lab.eng.tlv2.redhat.com/view/DFG/view/network/view/networking-ovn/job/DFG-network-networking-ovn-16.2_director-rhel-virthost-3cont_2comp-ipv4-vxlan/155/testReport/
[2] https://rhos-ci-jenkins.lab.eng.tlv2.redhat.com/view/DFG/view/network/view/networking-ovn/job/DFG-network-networking-ovn-16.2_director-rhel-virthost-3cont_2comp-ipv4-vxlan/157/testReport/

Version-Release number of selected component (if applicable):
RHOS-16.2-RHEL-8-20210811.n.1

How reproducible:
I think it's 100% reproducible if VM instances are spawned in different computes

Steps to Reproduce:
1. run any of the existing VLAN Transparency tempest tests
2.
3.

Actual results:
No connectivity between VMs through their VLAN interface

Expected results:
Connectivity between VMs through their VLAN interface should work fine

Comment 2 Ihar Hrachyshka 2021-10-07 17:05:53 UTC

Should now pass with ovn-2021-21.09.0-10.el8fdp

Comment 9 Ihar Hrachyshka 2024-05-23 13:50:56 UTC

It was released already.