AllowVolumeExpansion

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gcePersistentDisk (Kubernetes.io/gce-pd)	1.11 (Jun 2018)
kubectl patch pvc elasticsearch-master-elasticsearch-master-0 -p '{"spec":{"resources":{"requests":{"storage":"35Gi"}}}}'
persistentvolumeclaim/elasticsearch-master-elasticsearch-master-0 patched


kubectl get storageclass
NAME                 PROVISIONER            RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE
standard (default)   kubernetes.io/gce-pd   Delete          Immediate           false                  3y220d
NAME                 PROVISIONER             RECLAIMPOLICY   VOLUMEBINDINGMODE      ALLOWVOLUMEEXPANSION   AGE
standard (default)   kubernetes.io/gce-pd    Delete          Immediate              true                   461d


https://kubernetes.io/blog/2018/07/12/resizing-persistent-volumes-using-kubernetes/

ExpandInUsePersistentVolumes. It is supported by the in-tree volume plugins GCE-PD, AWS-EBS, Cinder, and Ceph RB


apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: standard
parameters:
  type: pd-standard
provisioner: kubernetes.io/gce-pd
allowVolumeExpansion: true
reclaimPolicy: Delete

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