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fix migrate down time #5388

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Merged
merged 1 commit into from
Jun 24, 2025
Merged

fix migrate down time #5388

merged 1 commit into from
Jun 24, 2025

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changluyi
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@changluyi changluyi commented Jun 24, 2025

Pull Request

What type of this PR

Examples of user facing changes:

  • Features
  • Bug fixes
企业微信截图_17507360081435 企业微信截图_17507337221346

During hot migration, there is a possibility that the target pod's annotation kubevirt.io/migrationJobName is not updated in time, resulting in the failure of the lsp option to be successfully delivered.

This annotation is not considered at present, and the migration status is based on the status of the vmiMigration cr.

  • Docs
  • Tests

Which issue(s) this PR fixes

Fixes #5343

@dosubot dosubot bot added the size:XS This PR changes 0-9 lines, ignoring generated files. label Jun 24, 2025
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Summary of Changes

Hello @changluyi, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a bug fix aimed at improving the reliability and reducing the downtime associated with VirtualMachineInstance migrations. The change streamlines the network allocation process during migration by ensuring all relevant pod networks are handled directly, which should resolve issues stemming from selective network processing.

Highlights

  • VM Migration Network Handling: The logic within the handleAddOrUpdateVMIMigration function has been refined to directly process all podNets associated with a VirtualMachineInstanceMigration. Previously, an intermediate filter (needAllocateSubnets) was applied, which is now removed.
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@dosubot dosubot bot added the bug Something isn't working label Jun 24, 2025
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Code Review

The pull request modifies the kubevirt controller to remove the needAllocateSubnets function call, iterating directly over podNets instead. This change aims to fix an issue related to migration down time.

Comment on lines +98 to 99
for _, podNet := range podNets {
portName := ovs.PodNameToPortName(vmiMigration.Spec.VMIName, vmiMigration.Namespace, podNet.ProviderName)

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medium

The needAllocatePodNets variable is no longer used after this change. Consider removing it to simplify the code.

Suggested change
for _, podNet := range podNets {
portName := ovs.PodNameToPortName(vmiMigration.Spec.VMIName, vmiMigration.Namespace, podNet.ProviderName)
for _, podNet := range podNets {

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Pull Request Test Coverage Report for Build 15839967526

Details

  • 0 of 1 (0.0%) changed or added relevant line in 1 file are covered.
  • No unchanged relevant lines lost coverage.
  • Overall coverage increased (+0.009%) to 21.553%

Changes Missing Coverage Covered Lines Changed/Added Lines %
pkg/controller/kubevirt.go 0 1 0.0%
Totals Coverage Status
Change from base Build 15838479916: 0.009%
Covered Lines: 10483
Relevant Lines: 48639

💛 - Coveralls

@dosubot dosubot bot added the lgtm This PR has been approved by a maintainer label Jun 24, 2025
@changluyi changluyi merged commit 936150d into master Jun 24, 2025
75 checks passed
@changluyi changluyi deleted the fix_migrate_down_time branch June 24, 2025 04:21
oilbeater pushed a commit that referenced this pull request Jun 24, 2025
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[BUG] KubeVirt LiveMigration optimization are not effecitve on the first migration
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