apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: data-import-export-pvc
  namespace: default            # 与 Job 同命名空间
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 40Gi
  storageClassName: ""          # 必须与 PV 一致
  volumeName: essd-data-import-export-pv # ← 显式绑定到刚才创建的 PV