[RFE] Ceph-CSI does not support PV resizing

[Pedro Guimarães]

Kubernetes Ceph CSI is missing the resizing feature that APIs have adopted since k8s 1.11.

When running current charm version to integrate alongside Ceph as described on: https://kubernetes.io/blog/2018/07/12/resizing-persistent-volumes-using-kubernetes/

1) Create PVC & PV
2) kubectl edit pvc <PVC_CLAIM>
3) Choosing resizing value

The PVC will have a log entry informing that no plugin was found to execute resizing.

Checking upstream issues, I've found:
https://github.com/ceph/ceph-csi/issues/393
https://github.com/ceph/ceph-csi/issues/101

Therefore, the feature is not yet ready for Ceph-CSI.

Once it is released, can we get it integrated with charms to deploy it automatically?

[Tim Van Steenburgh (tvansteenburgh)]

We'll keep an eye on it. It looks like resize support is planned for v2.0.0 the 3rd week of September. That likely won't give us enough time to test it for inclusion in the Charmed Kubernetes 1.16 release.

[Kevin W Monroe (kwmonroe)]

Ceph-csi v2.1.2 went out with CK 1.19 and v3.3.1 went out with CK 1.22. Marking this as 'released'.