Merge pull request #282 from huaizong/improve-remount-pv-path-when-exit-v2

remount old mount point when csi plugin unexpect exit

deploy/cephfs/helm/templates/nodeplugin-clusterrole.yaml

@@ -10,6 +10,9 @@ metadata:
     release: {{ .Release.Name }}
     heritage: {{ .Release.Service }}
 rules:
+  - apiGroups: [""]
+    resources: ["configmaps"]
+    verbs: ["get", "list"]
   - apiGroups: [""]
     resources: ["nodes"]
     verbs: ["get", "list", "update"]

deploy/cephfs/helm/templates/nodeplugin-daemonset.yaml

@@ -70,6 +70,7 @@ spec:
             - "--v=5"
             - "--drivername=$(DRIVER_NAME)"
             - "--metadatastorage=k8s_configmap"
+            - "--mountcachedir=/mount-cache-dir"
           env:
             - name: HOST_ROOTFS
               value: "/rootfs"
@@ -83,6 +84,8 @@ spec:
               value: "unix:/{{ .Values.socketDir }}/{{ .Values.socketFile }}"
           imagePullPolicy: {{ .Values.nodeplugin.plugin.image.imagePullPolicy }}
           volumeMounts:
+            - name: mount-cache-dir
+              mountPath: /mount-cache-dir
             - name: plugin-dir
               mountPath: {{ .Values.socketDir }}
             - name: pods-mount-dir
@@ -103,6 +106,8 @@ spec:
           resources:
 {{ toYaml .Values.nodeplugin.plugin.resources | indent 12 }}
       volumes:
+        - name: mount-cache-dir
+          emptyDir: {}
         - name: plugin-dir
           hostPath:
             path: {{ .Values.socketDir }}