Question

A developer created a PVC named 'data-pvc' requesting 5Gi from the 'fast-ssd' StorageClass, and it successfully bound to a dynamically provisioned PV. The application now needs 20Gi. The developer edits the PVC and changes 'spec.resources.requests.storage' to 20Gi, but the change is rejected with an error, and the PVC remains at 5Gi. The 'fast-ssd' StorageClass does NOT have 'allowVolumeExpansion' set. What is the correct way to give the application 20Gi of storage while keeping data loss to a minimum?

Accepted Answer

Set 'allowVolumeExpansion: true' on the existing 'fast-ssd' StorageClass, then edit the PVC to request 20Gi so the volume expands in place.

Answer

Delete and recreate the PVC with a 20Gi request; the existing PV will automatically resize to match the new claim.

Answer

Edit the bound PV directly to increase its capacity to 20Gi, which propagates the new size to the PVC.

Answer

Enable expansion by adding 'allowVolumeExpansion: true' to the StorageClass, but note that in-flight PVCs bound before the change cannot be expanded and must be recreated.