Below is my PersistentVolume and PersistentVolumeClaim and config:

apiVersion: v1
kind: PersistentVolume
metadata:
  name: elasticsearch-pv
  labels:
    type: local
spec:
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteMany
  hostPath:
    path: "/data/elasticsearch"


---

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: elasticsearch-pvc
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 10Gi

The capacity and the requested resources is only 10Gb. But my elasticsearch instance, whose storage is mounted to elasticsearch-pvc, is currently taking about 30Gb on host. Is that expected behavior for hostPath PersistentVolume?