Bug 1888567

Summary:	[16.1] Support north-south traffic with SR-IOV on VLAN tenant networks
Product:	Red Hat OpenStack	Reporter:	Roman Safronov <rsafrono>
Component:	python-networking-ovn	Assignee:	OSP Team <rhos-maint>
Status:	CLOSED WONTFIX	QA Contact:	Eran Kuris <ekuris>
Severity:	high	Docs Contact:
Priority:	medium
Version:	16.1 (Train)	CC:	apevec, averdagu, jamsmith, jlibosva, lhh, majopela, scohen
Target Milestone:	z4	Keywords:	Triaged
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Last Closed:	2022-06-20 14:17:17 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1826364

Description Roman Safronov 2020-10-15 08:34:54 UTC

Description of problem:
During migration to OVN on SR-IOV env after FFU the VMs with VF(direct) ports became not pingable. Migration process itself completed successfully and normal ports were pingable. Note, the issue did not happen when I ran OVN migration on a freshly installed SR-IOV env.

Version-Release number of selected component (if applicable):
RHOS-16.1-RHEL-8-20201007.n.0
puppet-ovn-15.4.1-0.20200311045730.192ac4e.el8ost.noarch
python3-networking-ovn-7.3.1-1.20200902233412.4e24f4c.1.el8ost.noarch
python3-networking-ovn-migration-tool-7.3.1-1.20200902233412.4e24f4c.1.el8ost.noarch

How reproducible:
Tried once and the issue occurred

Steps to Reproduce:
1. Install OSP13 SR-IOV environment with ML2OVS mechanism driver
2. Perform FFU to OSP16.1
3. Create VM instances with normal and VF(direct) SR-IOV ports on each compute node. Create floating ip for each VM.
4. Perform OVN migration procedure.
5. Verify that all VMs are pingable via floating IPs.

Actual results:
normal VMs are pingable - CORRECT
VMs with VF ports are not pingable - BUG

Expected results:
All VMs are pingable diring and after OVN migration procedure

Additional info:

Comment 2 Jakub Libosvar 2020-10-15 10:17:29 UTC

We looked with Rodolfo with Lucas' help at the environment and currently OVN doesn't support N/S traffic with SRIOV + VLAN tenant network: https://bugs.launchpad.net/neutron/+bug/1875852

We can use this BZ to track the limitation if we want to fix it in OSP. There is probably nothing to do in networking-ovn, the work should be done in core-OVN side.

Comment 5 Arnau Verdaguer 2022-06-20 14:17:17 UTC

[600 days old] This is the RFE https://bugzilla.redhat.com/show_bug.cgi?id=1826364 to support this functionality on 17 or 18. Closing this bug