Merge pull request #1908 from umagnus/add_restore_doc

doc: add smb restore snapshot doc

deploy/example/snapshot/README.md

@@ -1,6 +1,7 @@
 # Azure File Snapshot feature
 
 > NOTE: Due to [Azure File snapshot restore API limitation](https://github.com/kubernetes-sigs/azurefile-csi-driver/issues/136), this driver only supports snapshot creation, snapshot could be restored from Azure portal or cli.
+> From version 1.30.2, you can restore smb fileshare snapshot by azure file CSI driver
 
 ## Install CSI Driver
 
@@ -53,5 +54,18 @@ Events:                                <none>
 ```
 > In above example, `snapcontent-2b0ef334-4112-4c86-8360-079c625d5562` is the snapshot name
 
+### 3. Create a new PVC based on snapshot
+```console
+kubectl apply -f https://raw.githubusercontent.com/kubernetes-sigs/azurefile-csi-driver/master/deploy/example/snapshot/pvc-azurefile-snapshot-restored.yaml
+kubectl apply -f https://raw.githubusercontent.com/kubernetes-sigs/azurefile-csi-driver/master/deploy/example/snapshot/nginx-pod-restored-snapshot.yaml
+```
+
+ - Check data
+```console
+$ kubectl exec nginx-restored -- ls /mnt/azurefile
+lost+found
+outfile
+```
+
 #### Links
  - [CSI Snapshotter](https://github.com/kubernetes-csi/external-snapshotter)

deploy/example/snapshot/nginx-pod-restored-snapshot.yaml

@@ -0,0 +1,21 @@
+---
+kind: Pod
+apiVersion: v1
+metadata:
+  name: nginx-restored
+spec:
+  nodeSelector:
+    kubernetes.io/os: linux
+  containers:
+    - image: mcr.microsoft.com/oss/nginx/nginx:1.17.3-alpine
+      name: nginx-restored
+      args:
+        - sleep
+        - "3600"
+      volumeMounts:
+        - name: azurefile01
+          mountPath: "/mnt/azurefile"
+  volumes:
+    - name: azurefile01
+      persistentVolumeClaim:
+        claimName: pvc-azurefile-snapshot-restored