In-tree storage plugin to CSI Driver Migration

[davidz627]

Feature Description

• One-line feature description (can be used as a release note): Migrate the internals of the in-tree plugins to call out to CSI Plugins while maintaining the original API
• Primary contact (assignee): @davidz627
• Responsible SIGs: sig-storage
• Design proposal link (community repo): https://github.com/kubernetes/community/blob/master/contributors/design-proposals/storage/csi-migration.md
• KEP: https://github.com/kubernetes/enhancements/tree/master/keps/sig-storage/625-csi-migration
• PRs:
  • In-Tree to CSI Migration logic for PersistentVolume Attach/Detach kubernetes#69830
• Link to e2e and/or unit tests:
  • GCE: https://testgrid.k8s.io/sig-gcp-compute-persistent-disk-csi-driver#Migration%20Kubernetes%20Master%20Driver%20Latest
• Reviewer(s) - (for LGTM) recommend having 2+ reviewers (at least one from code-area OWNERS file) agreed to review. Reviewers from multiple companies preferred: @saad-ali @jsafrane
• Approver (likely from SIG/area to which feature belongs): @saad-ali
• Feature target (which target equals to which milestone):
  • Alpha release: 1.13
  • Beta release: 1.17
  • Stable release target (x.y): 1.25

[davidz627]

/sig storage
/cc @ddebroy

[kacole2]

@davidz627 this release is targeted to be more ‘stable’ and will have an aggressive timeline. Please only include this enhancement for 1.13 if there is a high level of confidence it will meet the following deadlines:
Docs (open placeholder PRs): 11/8
Code Slush: 11/9
Code Freeze Begins: 11/15
Docs Complete and Reviewed: 11/27

Do you feel confident it will make these? If so we can include it for 1.13 tracking. Thanks!

[saad-ali]

@kacole2 This is multi quarter work with other components depending on it so we want to get it started ASAP (this quarter). That said as we approach end of the month @davidz627 and @ddebroy will make a call about if it is feasible to ship something this quarter or not. If not, we will remove it from the 1.13 milestone. For now let's track it.