ReadWriteOncePod PersistentVolume Access Mode

[chrishenzie]

Enhancement Description

• One-line enhancement description (can be used as a release note): ReadWriteOncePod PersistentVolume Access Mode
• Kubernetes Enhancement Proposal: KEP-2485: ReadWriteOncePod PV Access Mode
• Discussion Link: CSI community meeting, timestamped at 8m8s when topic is discussed
• Primary contact (assignee): @chrishenzie
• Responsible SIGs: sig-storage, sig-scheduling
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y): 1.22
  • Beta release target (x.y): 1.27
  • Stable release target (x.y): 1.29
• Alpha
  • KEP (k/enhancements) update PR(s):
    • KEP-2485: ReadWriteOncePod PersistentVolume AccessMode #2489
  • Code (k/k) update PR(s):
    • Use container-storage-interface spec v1.5.0 kubernetes#102894
    • ReadWriteOncePod access mode for PVs and PVCs kubernetes#102028
    • Enforce ReadWriteOncePod during scheduling kubernetes#103082
  • Docs (k/website) update PR(s):
    • ReadWriteOncePod access mode alpha docs website#28114
• Beta
  • KEP (k/enhancements) update PR(s):
    • KEP-2485: ReadWriteOncePod beta production readiness #3537
  • Code (k/k) update PR(s):
    • [scheduler] Support preemption of pods using ReadWriteOncePod PVCs kubernetes#114051
    • Graduate ReadWriteOncePod to beta, updated e2e test kubernetes#114494
  • Docs (k/website) update(s):
    • Update ReadWriteOncePod feature to beta website#39843
    • Feature blog for ReadWriteOncePod beta graduation website#39817
• Stable
  • KEP (k/enhancements) update PR(s):
    • KEP-2485: Graduate ReadWriteOncePod to GA #4206
    • KEP-2485: Link for ReadWriteOncePod alpha and beta e2e tests #4306
    • KEP-2485: mark status implemented #4347
  • Code (k/k) update PR(s):
    • Graduate ReadWriteOncePod to GA kubernetes#121077
  • Docs (k/website) update(s):
    • Graduate ReadWriteOncePod to GA website#43417
    • Feature blog for ReadWriteOncePod GA graduation website#43418

/sig storage
/sig scheduling

Please keep this description up to date. This will help the Enhancement Team to track the evolution of the enhancement efficiently.

[JamesLaverack]

/milestone v1.22

[PI-Victor]

Hello @chrishenzie 👋, 1.22 Docs release lead here.
This enhancement is marked as ‘Needs Docs’ for 1.22 release.

Please follow the steps detailed in the documentation to open a PR against dev-1.22 branch in the k/website repo. This PR can be just a placeholder at this time and must be created before Fri July 9, 11:59 PM PDT.
 Also, take a look at Documenting for a release to familiarize yourself with the docs requirement for the release.

Thank you!

p.s.: please don't forget to add PersistentVolumeAccessMode to the feature gates table to reflect this change.

[chrishenzie]

Hello @PI-Victor, I drafted a PR for kubernetes/website here. Thanks!

[supriya-premkumar]

Hi @chrishenzie. This is Supriya, 1.22 Enhancements Shadow here.

Code Freeze is on July 8th 2021 @ EOD PST. All tracked enhancements must be code complete, merged and have docs PRs open.
Please link your k/k PRs to the k/enhancements, so that they can be tracked going into freeze. If PRs are not merged by code freeze, they will be removed from the 1.22 milestone.

Please let us know on the PR link/status. Thank you!

[chrishenzie]

Hi @supriya-premkumar , thanks for the reminder. Just updated the description to include links the PRs for K8s changes + the website.

Currently undergoing API review for the new access mode. I opened a separate PR for scheduler changes to support this feature.

[supriya-premkumar]

Hi @chrishenzie, thank you for letting us know. Could you please link the related PRs? It will be helpful to track them.

[chrishenzie]

Hi @supriya-premkumar , they are:

• Use container-storage-interface spec v1.5.0 kubernetes#102894
• ReadWriteOncePod access mode for PVs and PVCs kubernetes#102028
• Enforce ReadWriteOncePod during scheduling kubernetes#103082

I added these to the checklist in the description above