apiVersion: v1
kind: Pod
metadata:
  name: gfs-chmode
spec:
  containers:
  - name: change-mode
    image: alpine 
    volumeMounts:
    - name: gfs
      mountPath: /mnt
    command: [ "chmod", "a+w", "/mnt"]
  volumes:
  - name: gfs
    persistentVolumeClaim:
      claimName: <change-me>
