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PVC: Use Owner UIDs instead of Owner names. #3856

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merged 1 commit into from
Mar 25, 2021

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wlynch
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@wlynch wlynch commented Mar 25, 2021

Changes

We've noticed that using Owner names can lead to race conditions in
deleting a volumeClaimTemplate PVC in where a PipelineRun is quickly deleted
then recreated (see #3855).

Using the UID allows us to uniquely identify independent runs with the
same name, avoiding this issue while keeping the same semantic.

Fixes #3855

/kind bug

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@tekton-robot tekton-robot added release-note Denotes a PR that will be considered when it comes time to generate release notes. kind/bug Categorizes issue or PR as related to a bug. labels Mar 25, 2021
@tekton-robot tekton-robot requested review from dibyom and imjasonh March 25, 2021 16:35
@tekton-robot tekton-robot added the size/S Denotes a PR that changes 10-29 lines, ignoring generated files. label Mar 25, 2021
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ghost commented Mar 25, 2021

@jlpettersson is there any reason that using the owner reference UID instead of the Name would be a problem when constructing a volumeClaimTemplate's pvc?

/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sbwsg

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@tekton-robot tekton-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Mar 25, 2021
@tekton-robot tekton-robot added size/M Denotes a PR that changes 30-99 lines, ignoring generated files. and removed size/S Denotes a PR that changes 10-29 lines, ignoring generated files. labels Mar 25, 2021
We've noticed that using Owner names can lead to race conditions in
deleting a volumeClaimTemplate PVC in where a PipelineRun is quickly deleted
then recreated (see tektoncd#3855).

Using the UID allows us to uniquely identify independent runs with the
same name, avoiding this issue while keeping the same semantic.
@jlpettersson
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is there any reason that using the owner reference UID instead of the Name would be a problem when constructing a volumeClaimTemplate's pvc?

Nope.

This was a good catch @wlynch and @sbwsg !!

/lgtm

@tekton-robot tekton-robot added the lgtm Indicates that a PR is ready to be merged. label Mar 25, 2021
@tekton-robot tekton-robot merged commit faa8cab into tektoncd:main Mar 25, 2021
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Successfully merging this pull request may close these issues.

PipelineRun volumeClaimTemplate creation can race with PVC deletion
3 participants