OCPBUGS-114403: Add origin e2e test for EVPN controller stability after VM live migration - #31585
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@Ultimate-etamitlU: This pull request references Jira Issue OCPBUGS-114403, which is valid. 3 validation(s) were run on this bug
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Repository YAML (base), Central YAML (inherited) Review profile: CHILL Plan: Team Run ID: 📒 Files selected for processing (1)
Included review availability: Your plan provides up to 8 included reviews per hour; 5 remain after this review. WalkthroughThe change adds a Ginkgo test for EVPN controller stability after VM live migration. The test creates a persistent-IP secondary network, migrates an attached VM, and verifies that ovnkube-node containers do not restart. ChangesEVPN live migration stability
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to This localized change adds coverage for EVPN stability after VM live migration, and no actionable merge-blocking risk remains beyond normal checks and review. Suggested reviewers: 🚥 Pre-merge checks | ✅ 11 | ❌ 4❌ Failed checks (4 warnings)
✅ Passed checks (11 passed)
Full details: Test Structure And QualityExplanation The added Ginkgo test introduces multiple assertions without meaningful failure messages. The new namespace, UDN readiness, worker lookup, worker-count, NAD creation, VM creation, and both ovnkube-node list assertions use bare Resolution Add a diagnostic message to every new assertion, including the namespace creation, UDN preparation, worker lookup and minimum-worker check, NAD creation, VM creation, and pre- and post-migration pod-list calls. Keep the existing messages on the empty-pod and restart-map assertions. For example, use messages such as Full details: Microshift Test CompatibilityExplanation The new test introduces a multi-node assumption that MicroShift cannot satisfy. The test explicitly requires at least two worker nodes before it performs live migration ( Resolution MicroShift compatibility notice: This test uses a multi-node feature that is not available on MicroShift. If this repository's presubmit CI does not already include MicroShift jobs, verify the test with Full details: Single Node Openshift (Sno) Test CompatibilityExplanation The new Ginkgo test assumes at least two worker nodes at Resolution Single Node OpenShift (SNO) compatibility notice: This test assumes a multi-node cluster and may fail on Single Node OpenShift deployments. Please verify the test with Full details: Ipv6 And Disconnected Network Test CompatibilityExplanation The new Ginkgo test has an explicit IPv4-only network assumption. It sets Resolution IPv6 and disconnected network compatibility notice: This test may contain IPv4 assumptions or external connectivity requirements that will fail in IPv6-only disconnected environments. Please verify your test works on IPv6 by running an additional CI job: For parallel tests:
✨ Finishing Touches🧪 Generate unit tests (beta)
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[APPROVALNOTIFIER] This PR is NOT APPROVED This pull-request has been approved by: Ultimate-etamitlU The full list of commands accepted by this bot can be found here. DetailsNeeds approval from an approver in each of these files:Approvers can indicate their approval by writing |
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Inline comments:
In `@test/extended/networking/livemigration.go`:
- Line 421: Update the restart snapshot comparison around restartsBefore and its
exists branch to require a non-empty baseline before passing, and compare the
complete before and after restart maps so containers without baseline entries
cannot be ignored. Preserve the existing migration/recreation validation while
applying this to both referenced snapshot paths.
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Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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Configuration used: Repository YAML (base), Central YAML (inherited)
Review profile: CHILL
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Run ID: e0b7034a-3014-4347-99f2-b12d0f45450b
📒 Files selected for processing (1)
test/extended/networking/livemigration.go
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@coderabbitai : The warning raised in pre-merge checks apply equally to the existing tests in this file and again I followed existing pattern.
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Tip For best results, initiate chat on the files or code changes. 🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
file="test/extended/networking/livemigration.go"
ast-grep outline "$file" --items all --view expanded || true
printf '\n--- Relevant declarations and assertions ---\n'
rg -n -C 4 \
'PersistentIPsForVirtualization|kubevirt\.NewClient|MicroShift|worker|IPv6|only supported for primaries|Expect\(|Eventually\(|EVPN|restart|migration' \
"$file"
printf '\n--- Cited and appended test ranges ---\n'
nl -ba "$file" | sed -n '70,125p;360,430p;430,540p'Length of output: 28487
The new test inherits The direct The two-worker requirement matches the existing live-migration test setup. The secondary UDN uses IPv4. Lines 96-103 document that IPv6 is only supported for primary UDNs. These warnings do not apply to this change. I withdraw them. ✏️ Learnings added
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Adds an e2e test that verifies ovnkube-node pods do not crash after VM live migration completes. The EVPN controller's shouldDeleteNeighbors and shouldEnsureNeighbors could panic when DiscoverLiveMigrationStatus returned nil SourcePod post-migration. This test records ovnkube-node container restart counts, performs a VM migration, waits for the EVPN controller to process post-migration state, and confirms no containers restarted. Refs: OCPBUGS-114403 Signed-off-by: Parikshit Khedekar <pkhedeka@redhat.com> Assisted-by: Claude Opus 4.6
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/test e2e-metal-ipi-ovn-ipv6 |
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Summary
VM live migration completes
DiscoverLiveMigrationStatus post-migration
Why this E2E / Note for reviewer
The upstream fix (PR #6866) adds two unit tests that manually construct
the post-migration state (
SourcePod: nil) and confirmreconcilePodsucceeds without panic — they cover the fix logic completely.
However, unit tests cannot trigger a real KubeVirt VM live migration.
This E2E lets the system reach that state naturally through an actual
migration and verifies no ovnkube-node containers crash. This is the
gap the E2E fills — validating the fix holds up on a live cluster with
a real migration path.
Test approach
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