Trunk subports sometimes not becoming ACTIVE and trunk:subport

Bug #1837916 reported by Michal Dulko
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
neutron
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Undecided
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Bug Description

We're occasionally hitting a bug preventing Kuryr-Kubernetes from attaching ports to a trunk. The result of the operation on the API is 200, but ports never gets into ACTIVE and switches device_owner to trunk:subport. In our case Kuryr is creating those ports in bulks of 3, then tagging them one-by-one, then attaching to a trunk using random segmentation ID's.

Removing the subport from trunk and attaching it again resolves the issue.

In the logs of openvswitch-agent we see:

Remote error: StaleDataError UPDATE statement on table 'standardattributes' expected to update 1 row(s); 0 were matched.

Version-Release number of selected component (if applicable):
Rocky

How reproducible:
Occasionally. :(

Steps to Reproduce (I'm putting what Kuryr does):
1. Create 3 ports in bulk.
2. Tag them.
3. Add them to a trunk.

Actual results:
Sometimes port stays DOWN and still has what Kuryr put as device_owner instead of trunk:subport.

Expected results:
Port becomes ACTIVE and has trunk:subport as device_owner.

Tags: trunk
tags: added: trunk
Revision history for this message
Boden R (boden) wrote :

Any idea if this is also happening on master branch, or is this just a problem with Rocky?

Revision history for this message
Michal Dulko (michal-dulko-f) wrote :

Unfortunately no idea at the moment and I'm currently unable to check. Will update if I'll be able to test it with other versions.

Revision history for this message
Bence Romsics (bence-romsics) wrote :

This seems like a duplicate of https://bugs.launchpad.net/neutron/+bug/1828375.

Can you try this proposed fix? https://review.opendev.org/662236

As you can see in the commit message that's a fix with some concerns, so feedback from people who actually hit this problem would be really appreciated.

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