Question

A developer needs to increase the size of a PersistentVolumeClaim named 'data-pvc' from 5Gi to 20Gi because the application is running out of space. The PVC was dynamically provisioned by a StorageClass named 'fast-ssd' backed by a CSI driver that supports online resizing. When the developer edits the PVC and increases spec.resources.requests.storage to 20Gi, the change is rejected with the error 'persistentvolumeclaims "data-pvc" is forbidden: only dynamically provisioned pvcs can be resized and the storageclass that provisions the pvc must support resize'. What must be done to allow the resize to succeed?

Accepted Answer

Set 'allowVolumeExpansion: true' on the 'fast-ssd' StorageClass, then edit the PVC to request 20Gi.

Answer

Delete the PVC and recreate it with the larger 20Gi request, since PVC size is immutable.

Answer

Change the PVC's accessModes to ReadWriteMany, which enables volume expansion.

Answer

Set the PersistentVolume's persistentVolumeReclaimPolicy to Retain before editing the PVC size.