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[CCLM] Make --network-for-live-migration optional arg#4053

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jpeimer wants to merge 3 commits intoRedHatQE:mainfrom
jpeimer:cclm_optional_migration_network
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[CCLM] Make --network-for-live-migration optional arg#4053
jpeimer wants to merge 3 commits intoRedHatQE:mainfrom
jpeimer:cclm_optional_migration_network

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@jpeimer jpeimer commented Mar 3, 2026

Short description:

Depending on the clusters' setup, it may not be required to patch the liveMigrationConfig in HCO.
Making it an optional argument.

More details:
What this PR does / why we need it:
Which issue(s) this PR fixes:
Special notes for reviewer:
jira-ticket:

Summary by CodeRabbit

  • Tests
    • Added an optional CLI option to specify a network name for cross-cluster live-migration tests. When provided, tests will apply and use that network; when omitted, network configuration is skipped and tests proceed without it. The test suite now accepts and honors a user-supplied network name and handles its absence gracefully.

@jpeimer jpeimer marked this pull request as ready for review March 3, 2026 11:07
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No actionable comments were generated in the recent review. 🎉

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Reviewing files that changed from the base of the PR and between 525a654 and 8b6774f.

📒 Files selected for processing (2)
  • conftest.py
  • tests/storage/cross_cluster_live_migration/utils.py

📝 Walkthrough

Walkthrough

Adds an optional CLI flag --network-for-live-migration. A session fixture exposes its value; cross-cluster fixtures accept the optional name and may return None. Utility logic now accepts a nullable network, logs actions, and conditionally applies live-migration network configuration.

Changes

Cohort / File(s) Summary
Root pytest configuration
conftest.py
Added Session CLI option --network-for-live-migration (string). If omitted, network configuration is skipped.
Cross-cluster live migration fixtures
tests/storage/cross_cluster_live_migration/conftest.py
Added session-scoped fixture network_for_live_migration_name that reads the CLI option. Updated local_cluster_network_for_live_migration and remote_cluster_network_for_live_migration signatures to accept network_for_live_migration_name and return None when not provided. Removed LIVE_MIGRATION_NETWORK_NAME constant.
Live migration configuration logic
tests/storage/cross_cluster_live_migration/utils.py
Updated enable_feature_gate_and_configure_hco_live_migration_network(...) to accept `NetworkAttachmentDefinition

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🎯 3 (Moderate) | ⏱️ ~20 minutes

🚥 Pre-merge checks | ✅ 1 | ❌ 2

❌ Failed checks (1 warning, 1 inconclusive)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Write docstrings for the functions missing them to satisfy the coverage threshold.
Description check ❓ Inconclusive The description provides a short explanation and rationale but is incomplete: it lacks details on what the PR does, which issue(s) it fixes, special reviewer notes, and the required Jira ticket information. Complete the template by filling in 'What this PR does / why we need it' with technical details, and provide Jira ticket URL or explicitly state 'NONE' if not applicable.
✅ Passed checks (1 passed)
Check name Status Explanation
Title check ✅ Passed The PR title clearly and concisely identifies the main change: making the --network-for-live-migration argument optional, which matches the core objective of the changeset.

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@tests/storage/cross_cluster_live_migration/conftest.py`:
- Around line 47-55: The fixture network_for_live_migration_name logs missing
optional config at INFO; change that call to use WARNING level so missing
migration network config is visible during triage—replace
LOGGER.info("--network-for-live-migration not provided, skipping network
configuration") with LOGGER.warning(...) inside the
network_for_live_migration_name fixture to comply with the logging guideline.

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  • conftest.py
  • tests/storage/cross_cluster_live_migration/conftest.py
  • tests/storage/cross_cluster_live_migration/utils.py

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/lgtm

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jpeimer commented Mar 3, 2026

/build-and-push-container

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D/S test tox -e verify-tc-requirement-polarion failed: cnv-tests-tox-executor/26049

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jpeimer commented Mar 3, 2026

/build-and-push-container

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New container for quay.io/openshift-cnv/openshift-virtualization-tests:pr-4053 published

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/lgtm

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rnetser commented Mar 4, 2026

/approve
/lgtm

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duyanyan commented Mar 4, 2026

/lgtm

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jpeimer commented Mar 4, 2026

/verified

with and without the new flag:
-k TestCCLMvmWithInstanceType --network-for-live-migration=lm-network
-k TestCCLMvmWithInstanceType

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🧩 Analysis chain

🏁 Script executed:

#!/bin/bash
# Check smoke tests for any dependency on changed fixtures/utils
echo "=== Smoke tests using cross_cluster_live_migration ==="
rg "pytest.mark.smoke" --type=py -B5 | grep -A2 "smoke" | head -40

echo ""
echo "=== Any smoke test referencing network_for_live_migration ==="
rg "network_for_live_migration|enable_feature_gate_and_configure_hco_live_migration_network" --type=py -l

echo ""
echo "=== Cross cluster live migration test files ==="
fd "test_" tests/storage/cross_cluster_live_migration/

echo ""
echo "=== Get PR diff to find first changed file and line ==="
gh pr diff 4053 --patch | head -60

Length of output: 4627


🏁 Script executed:

#!/bin/bash
# Post inline review comment on first changed line of conftest.py (line 331)
gh api repos/RedHatQE/openshift-virtualization-tests/pulls/4053/reviews \
  --method POST \
  --field commit_id="$(gh pr view 4053 --json headRefOid --jq '.headRefOid')" \
  --field body="" \
  --field event="COMMENT" \
  --field "comments[][path]"="conftest.py" \
  --field "comments[][line]"=331 \
  --field "comments[][side]"="RIGHT" \
  --field "comments[][body]"="**Test Execution Plan**

- **Run smoke tests: False** _(No smoke test dependency chain found — changed fixtures and utilities are used only within \`tests/storage/cross_cluster_live_migration/\`)_

- \`tests/storage/cross_cluster_live_migration/test_cclm.py\` — verify full CCLM suite passes both **with** \`--network-for-live-migration=<network>\` and **without** the flag (network configuration skipped path)"

Length of output: 1735



🧠 Learnings used
Learnt from: rnetser
Repo: RedHatQE/openshift-virtualization-tests PR: 0
File: :0-0
Timestamp: 2025-12-16T10:28:54.212Z
Learning: In the openshift-virtualization-tests repository, when determining smoke test impact for test execution plans, only set "Run smoke tests: True" if there is a verified, traceable dependency path from smoke tests to the changed code. Session-scoped fixtures or infrastructure-sounding changes do NOT automatically imply smoke test impact - the dependency chain must be explicitly verified using shell scripts before recommending smoke test execution.

Learnt from: jpeimer
Repo: RedHatQE/openshift-virtualization-tests PR: 0
File: :0-0
Timestamp: 2025-12-22T15:56:00.157Z
Learning: In the openshift-virtualization-tests repository, when responding to test execution plan requests from openshift-virtualization-qe-bot-3, do NOT use "REQUEST_CHANGES" review type if the PR author has already marked the PR as verified (e.g., with `/verified` command). Test execution plans are informational guides, not blocking requirements. Use COMMENT event for informational test plans, or only REQUEST_CHANGES if there are actual code issues that need to be addressed before merging.

Learnt from: rnetser
Repo: RedHatQE/openshift-virtualization-tests PR: 0
File: :0-0
Timestamp: 2025-12-16T14:00:59.076Z
Learning: In the openshift-virtualization-tests repository, when responding to test execution plan requests from openshift-virtualization-qe-bot-3, CodeRabbit must post ONLY an inline review comment on the Files Changed tab and then stop immediately without generating any follow-up comments in the PR discussion thread. No acknowledgment messages, no confirmation of posting, no explanation - silence after posting the inline review equals success. Additional comments create empty/meaningless reviews that clutter the PR.

Learnt from: rnetser
Repo: RedHatQE/openshift-virtualization-tests PR: 3062
File: conftest.py:333-333
Timestamp: 2025-12-16T20:11:03.645Z
Learning: In the openshift-virtualization-tests repository, when determining smoke test impact for changes affecting py_config["os_login_param"], follow this verification methodology: (1) Find all smoke tests: `rg "pytest.mark.smoke" --type=py -B2 | grep "def test_"`, (2) For each smoke test file, search for VM creation patterns: `rg "VirtualMachineForTests|running_vm|VirtualMachineForTestsFromTemplate|wait_for_ssh|check_ssh_connectivity"`, (3) Trace the dependency chain: smoke test → VirtualMachineForTests/running_vm() → wait_for_ssh_connectivity() (default enabled) → vm.login_params property → py_config["os_login_param"][vm.os_flavor], (4) Check utilities/virt.py for login_params usage: `rg "os_login_param|login_params" utilities/virt.py -C3`. Any smoke test creating VMs with default SSH connectivity checks (running_vm with check_ssh_connectivity=True) depends on os_login_param, even if the test doesn't directly reference it.

Learnt from: rnetser
Repo: RedHatQE/openshift-virtualization-tests PR: 3062
File: conftest.py:333-333
Timestamp: 2025-12-16T15:09:49.597Z
Learning: In the openshift-virtualization-tests repository, when conftest.py or utilities/bitwarden.py changes affect py_config["os_login_param"], smoke test impact must be determined by: (1) finding all smoke tests using `rg "pytest.mark.smoke"`, (2) checking each for VM creation patterns (VirtualMachineForTests, running_vm, VirtualMachineForTestsFromTemplate), (3) tracing whether running_vm is called with default check_ssh_connectivity=True, which accesses vm.login_params property that reads py_config["os_login_param"][vm.os_flavor]. The dependency chain is: smoke test → VM creation → running_vm → wait_for_ssh_connectivity → vm.login_params → os_login_param. Any smoke test creating VMs with SSH connectivity (the default) depends on os_login_param.

Learnt from: rnetser
Repo: RedHatQE/openshift-virtualization-tests PR: 0
File: :0-0
Timestamp: 2025-09-29T19:05:24.987Z
Learning: For PR `#1904` test execution, the critical validation point is test_connectivity_over_migration_between_localnet_vms which should fail gracefully on cloud clusters but pass on bare-metal/PSI clusters, representing the core nmstate conditional logic functionality.

Learnt from: rnetser
Repo: RedHatQE/openshift-virtualization-tests PR: 2469
File: utilities/sanity.py:139-142
Timestamp: 2025-11-08T07:36:57.616Z
Learning: In the openshift-virtualization-tests repository, user rnetser prefers to keep refactoring PRs (like PR `#2469`) strictly focused on moving/organizing code into more granular modules without adding new functionality, error handling, or behavioral changes. Such improvements should be handled in separate PRs.

Learnt from: yossisegev
Repo: RedHatQE/openshift-virtualization-tests PR: 3358
File: tests/network/sriov/test_sriov.py:21-21
Timestamp: 2026-01-07T09:52:22.771Z
Learning: For PRs that only remove or modify pytest markers (like removing pytest.mark.post_upgrade) without changing test logic in openshift-virtualization-tests, collection verification using `pytest --collect-only` is sufficient. Full test execution is not required to verify marker-only changes.

Learnt from: rnetser
Repo: RedHatQE/openshift-virtualization-tests PR: 0
File: :0-0
Timestamp: 2025-09-29T19:05:24.987Z
Learning: The test execution plan for PR `#1904` focuses on cluster-type conditional logic where nmstate functionality is bypassed on cloud clusters (Azure/AWS) but fully functional on bare-metal/PSI clusters, requiring different test strategies for each environment type.

Learnt from: rnetser
Repo: RedHatQE/openshift-virtualization-tests PR: 3228
File: .coderabbit.yaml:30-41
Timestamp: 2026-01-05T10:33:55.037Z
Learning: In the openshift-virtualization-tests repository, user rnetser prefers minimal pre-merge checks in CodeRabbit configuration: only docstrings enforcement (80% threshold) is needed, not title or description checks.

Learnt from: rnetser
Repo: RedHatQE/openshift-virtualization-tests PR: 0
File: :0-0
Timestamp: 2025-12-16T14:06:22.391Z
Learning: In the openshift-virtualization-tests repository, when posting test execution plan inline review comments using GitHub API, the full test execution plan content must go in the `comments[].body` field (which appears on Files Changed tab), NOT in the top-level `body` field (which appears in PR discussion thread). The top-level `body` field should be omitted or left empty to avoid posting redundant comments in the PR discussion thread.

Learnt from: EdDev
Repo: RedHatQE/openshift-virtualization-tests PR: 3612
File: tests/network/user_defined_network/ip_specification/test_ip_specification.py:10-10
Timestamp: 2026-01-26T20:29:54.623Z
Learning: In the RedHatQE/openshift-virtualization-tests repository, when introducing STD (Standard Test Definition) PRs that define test case structure without implementation, it's acceptable and intentional to use `__test__ = False` to block pytest collection until the tests are fully implemented in a follow-up PR. The STD workflow involves: (1) defining test structure, markers, and documentation first, (2) implementing the actual test logic and removing the collection blocker in a subsequent PR.

Learnt from: yossisegev
Repo: RedHatQE/openshift-virtualization-tests PR: 3196
File: tests/network/upgrade/test_upgrade_network.py:4-4
Timestamp: 2025-12-22T16:27:44.327Z
Learning: For PRs that remove test cases (especially redundant test cleanup PRs in openshift-virtualization-tests), test collection verification (pytest --collect-only showing selected/deselected counts) is sufficient to confirm the removal was clean and the test module remains functional. Full test execution is not required for test deletion PRs.

Learnt from: servolkov
Repo: RedHatQE/openshift-virtualization-tests PR: 1776
File: libs/net/node_network.py:25-31
Timestamp: 2025-08-20T23:43:28.117Z
Learning: In the RedHatQE/openshift-virtualization-tests project, servolkov's team always uses bare metal (BM) clusters with IPv4 setup in their testing environment, making defensive checks for IPv4 data presence potentially redundant in their networking code.

Learnt from: rnetser
Repo: RedHatQE/openshift-virtualization-tests PR: 3371
File: scripts/tests_analyzer/compare_coderabbit_decisions.py:199-289
Timestamp: 2026-01-13T10:06:14.822Z
Learning: In the openshift-virtualization-tests repository, user rnetser prefers to keep pagination loops inline rather than extracting them into generic helper functions when the loops have different URL patterns and unique post-processing logic, as the inline approach improves readability and makes each endpoint's behavior more explicit.

Learnt from: jpeimer
Repo: RedHatQE/openshift-virtualization-tests PR: 1160
File: tests/storage/storage_migration/test_mtc_storage_class_migration.py:165-176
Timestamp: 2025-06-17T07:45:37.776Z
Learning: In the openshift-virtualization-tests repository, user jpeimer prefers explicit fixture parameters over composite fixtures in test methods, even when there are many parameters, as they find this approach more readable and maintainable for understanding test dependencies.

Learnt from: jpeimer
Repo: RedHatQE/openshift-virtualization-tests PR: 3571
File: tests/storage/storage_migration/utils.py:158-167
Timestamp: 2026-01-25T13:18:26.819Z
Learning: In the openshift-virtualization-tests repository, user jpeimer prefers to avoid nitpicky style changes (e.g., removing `.keys()` from dict membership checks) because verifying every change is expensive. Be cautious about suggesting low-impact stylistic improvements that require verification overhead.

Learnt from: akri3i
Repo: RedHatQE/openshift-virtualization-tests PR: 1210
File: tests/virt/cluster/general/mass_machine_type_transition_tests/conftest.py:24-64
Timestamp: 2025-06-23T19:28:20.281Z
Learning: In OpenShift Virtualization mass machine type transition tests, the machine type glob pattern "pc-q35-rhel8.*.*" is intentionally hard-coded in the kubevirt_api_lifecycle_automation_job as it's used only once for this specific test case, with plans to update it in the future if the job needs to support other machine types.

Learnt from: RoniKishner
Repo: RedHatQE/openshift-virtualization-tests PR: 1411
File: utilities/os_utils.py:246-279
Timestamp: 2025-07-22T17:13:59.166Z
Learning: In the RedHatQE/openshift-virtualization-tests repository, CentOS preferences follow the format "centos-stream<version>" (e.g., "centos-stream9", "centos-stream10"). The generate_instance_type_centos_os_matrix function correctly uses regex to extract numeric versions and constructs the latest version string in the same format as the input preferences for proper comparison.

Learnt from: yossisegev
Repo: RedHatQE/openshift-virtualization-tests PR: 3873
File: tests/network/localnet/test_non_udn_localnet.py:7-9
Timestamp: 2026-02-25T10:52:23.378Z
Learning: In the RedHatQE/openshift-virtualization-tests repository, networking infrastructure requirements such as nmstate, localnet bridge mappings, and NIC availability are NOT considered special/platform-specific infrastructure that would warrant a tier3 marker. These are standard test environment capabilities in this repository's test environment, and tests requiring them do not automatically qualify as tier3 unless they involve other truly platform-specific/complex/time-consuming characteristics beyond standard network test infrastructure.

Learnt from: akri3i
Repo: RedHatQE/openshift-virtualization-tests PR: 1210
File: tests/virt/cluster/general/mass_machine_type_transition_tests/conftest.py:83-97
Timestamp: 2025-06-23T19:19:31.961Z
Learning: In OpenShift Virtualization mass machine type transition tests, the kubevirt_api_lifecycle_automation_job requires cluster-admin privileges to function properly, as confirmed by the test maintainer akri3i.

Learnt from: vamsikrishna-siddu
Repo: RedHatQE/openshift-virtualization-tests PR: 2199
File: tests/storage/test_online_resize.py:108-113
Timestamp: 2025-09-28T14:43:07.181Z
Learning: In the openshift-virtualization-tests repo, PR `#2199` depends on PR `#2139` which adds the OS_FLAVOR attribute to the Images.Cirros class, making Images.Cirros.OS_FLAVOR available for conditional logic in tests.

Learnt from: vamsikrishna-siddu
Repo: RedHatQE/openshift-virtualization-tests PR: 2199
File: tests/storage/test_online_resize.py:108-113
Timestamp: 2025-09-28T14:43:07.181Z
Learning: In the openshift-virtualization-tests repo, PR `#2199` depends on PR `#2139` which adds architecture-specific OS_FLAVOR attributes to the Images.Cirros class (OS_FLAVOR_CIRROS for x86_64/ARM64, OS_FLAVOR_FEDORA for s390x), enabling conditional logic based on the underlying OS flavor in tests.

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