Epic Goal

Support upstream feature "Control volume mode conversion between source and target PVC"" in OCP as Beta, i.e. test it and have docs for it.

Note: this is a very niche feature of CSI external-provisioner sidecar, useful only for specialized backup software vendors. IMO we don't need any user-facing documentation.

Why is this important?

• We get this upstream feature through Kubernetes rebase. We should ensure it works well in OCP and we have docs for it.

Upstream links

• Enhancement issue: https://github.com/kubernetes/enhancements/issues/3141
• KEP: https://github.com/kubernetes/enhancements/pull/3151

Acceptance Criteria

• CI - MUST be running successfully with tests automated
• Release Technical Enablement - Provide necessary release enablement details and documents.
• ...

Dependencies (internal and external)

1. External: the feature is currently scheduled for GA in Kubernetes 1.26, i.e. OCP 4.13, but it may change before Kubernetes 1.26 GA.

Done Checklist

• CI - CI is running, tests are automated and merged.
• Release Enablement <link to Feature Enablement Presentation>
• DEV - Upstream code and tests merged: <link to meaningful PR or GitHub Issue>
• DEV - Upstream documentation merged: <link to meaningful PR or GitHub Issue>
• DEV - Downstream build attached to advisory: <link to errata>
• QE - Test plans in Polarion: <link or reference to Polarion>
• QE - Automated tests merged: <link or reference to automated tests>
• DOC - Downstream documentation merged: <link to meaningful PR>