应用场景

CSI中的PVC为csi-pvc-local2，在CSI中创建容量为300 GiB的克隆卷clone-pvc-from-pvc6。

操作步骤

1. 创建克隆卷的StorageClass配置文件csi-stor-sc-clone6.yaml。

   apiVersion: storage.k8s.io/v1
   kind: StorageClass
   metadata:
     name: csi-stor-sc-clone6
   provisioner: stor.csi.k8s.io
   parameters:
     clusterID: "cluster1"
     flattenVolumeFromSnapshot: "false"
     maxCloneDepth: "8"
     maxSessions: "2"
   reclaimPolicy: Delete
   volumeBindingMode: Immediate
   allowVolumeExpansion: true
   

2. 创建克隆卷的配置文件clone-pvc-from-pvc6.yaml。

   apiVersion: v1
   kind: PersistentVolumeClaim  
   metadata:
     name: clone-pvc-from-pvc6 
   spec:
     accessModes:
     - ReadWriteOnce
     resources:
       requests:
         storage: 300Gi  
     storageClassName: csi-stor-sc-clone6  
     dataSource:
       kind: PersistentVolumeClaim  
       name: csi-pvc-local2
   

3. 应用配置文件。

   [root@k8s-master stor-examp]# kubectl apply -f csi-stor-sc-clone6.yaml 
   storageclass.storage.k8s.io/csi-stor-sc-clone6 created 
   [root@k8s-master stor-examp]# kubectl apply -f clone-pvc-from-pvc6.yaml
   persistentvolumeclaim/clone-pvc-from-pvc6 created
   

4. 查看克隆卷。

   [root@k8s-master stor-examp]# kubectl describe pvc clone-pvc-from-pvc6
   Name:          clone-pvc-from-pvc6
   Namespace:     default
   StorageClass:  csi-stor-sc-clone6
   Status:        Bound
   Volume:        pvc-6e7bfe39-437f-47f3-a976-9c9495d0577a
   Labels:        <none>
   Annotations:   pv.kubernetes.io/bind-completed: yes
                  pv.kubernetes.io/bound-by-controller: yes
                  volume.beta.kubernetes.io/storage-provisioner: stor.csi.k8s.io
   Finalizers:    [kubernetes.io/pvc-protection]
   Capacity:      300Gi
   Access Modes:  RWO
   VolumeMode:    Filesystem
   DataSource:
     Kind:   PersistentVolumeClaim
     Name:   csi-pvc-local2
   Used By:  <none>
   Events:
     Type    Reason                 Age                  From                                                                                             Message
     ----    ------                 ----                 ----                                                                                             -------
     Normal  Provisioning           119s                 stor.csi.k8s.io_csi-storplugin-controller-79df7bf49c-gtwvd_da834946-ac4e-4fe7-b8c1-710e560a39b8  External provisioner is provisioning volume for claim "default/clone-pvc-from-pvc6"
     Normal  ExternalProvisioning   116s (x2 over 119s)  persistentvolume-controller                                                                      waiting for a volume to be created, either by external provisioner "stor.csi.k8s.io" or manually created by system administrator
     Normal  ProvisioningSucceeded  116s                 stor.csi.k8s.io_csi-storplugin-controller-79df7bf49c-gtwvd_da834946-ac4e-4fe7-b8c1-710e560a39b8  Successfully provisioned volume pvc-6e7bfe39-437f-47f3-a976-9c9495d0577a