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3.10.2. 将数据恢复到新 PVC

下列步骤假定已创建新的 pvc。

流程

  1. 覆盖当前定义的 claim-name: 

    $ oc set volume dc/demo --add --name=persistent-volume \
		--type=persistentVolumeClaim --claim-name=filestore \ --mount-path=/opt/app-root/src/uploaded --overwrite

  2. 验证 pod 是否在使用新 PVC: 

    $ oc describe dc/demo
Name:		demo
Namespace:	test
Created:	3 hours ago
Labels:		app=demo
Annotations:	openshift.io/generated-by=OpenShiftNewApp
Latest Version:	3
Selector:	app=demo,deploymentconfig=demo
Replicas:	1
Triggers:	Config, Image(demo@latest, auto=true)
Strategy:	Rolling
Template:
  Labels:	app=demo
		deploymentconfig=demo
  Annotations:	openshift.io/container.demo.image.entrypoint=["container-entrypoint","/bin/sh","-c","$STI_SCRIPTS_PATH/usage"]
		openshift.io/generated-by=OpenShiftNewApp
  Containers:
   demo:
    Image:	docker-registry.default.svc:5000/test/demo@sha256:0a9f2487a0d95d51511e49d20dc9ff6f350436f935968b0c83fcb98a7a8c381a
    Port:	8080/TCP
    Volume Mounts:
      /opt/app-root/src/uploaded from persistent-volume (rw)
    Environment Variables:	<none>
  Volumes:
   persistent-volume:
    Type:	PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
    *ClaimName:	filestore*
    ReadOnly:	false
...omitted...

  3. 现在，部署配置使用新的 pvc，运行 oc rsync 将文件放在新的 pvc 中： 

    $ oc rsync uploaded demo-3-2b8gs:/opt/app-root/src/
sending incremental file list
uploaded/
uploaded/ocp_sop.txt
uploaded/lost+found/

sent 181 bytes  received 39 bytes  146.67 bytes/sec
total size is 32  speedup is 0.15

  4. 使用 oc rsh 连接到 pod 并查看目录的内容，验证该文件是否在 pod 上恢复： 

    $ oc rsh demo-3-2b8gs
sh-4.2$ ls /opt/app-root/src/uploaded/
lost+found  ocp_sop.txt