diff --git a/roles/clean/tasks/clean_node.yml b/roles/clean/tasks/clean_node.yml
index 62f2e15..b95ba99 100644
--- a/roles/clean/tasks/clean_node.yml
+++ b/roles/clean/tasks/clean_node.yml
@@ -37,18 +37,37 @@
             state: stopped
             enabled: no
           ignore_errors: true
-  
+
         # as k8s-network-plugins use host-network, '/var/run/docker/netns/default' must be umounted
-        - name: unmount docker filesystem-1
+        - name: umount docker filesystem-1
           mount: path=/var/run/docker/netns/default state=unmounted
-  
-        - name: unmount docker filesystem-2
+
+        - name: umount docker filesystem-2
           mount: path=/var/lib/docker/overlay state=unmounted
-  
+
+        - name: umount docker filesystem-3
+          shell: "echo /var/lib/docker/overlay2/*/merged|xargs umount || exit 0"
+          args:
+            warn: false
+          ignore_errors: true
+
+        - name: umount docker filesystem-4
+          shell: "echo /var/lib/docker/containers/*/mounts/shm|xargs umount || exit 0"
+          args:
+            warn: false
+          ignore_errors: true
+
+        - name: umount docker filesystem-5
+          shell: "echo /var/run/docker/netns/*|xargs umount || exit 0"
+          args:
+            warn: false
+          ignore_errors: true
+
         - name: remove files and dirs
           file: name={{ item }} state=absent
           with_items:
           - "/var/lib/docker/"
+          - "/var/lib/dockershim/"
           - "/var/run/docker/"
           - "/etc/docker/"
           - "/etc/systemd/system/docker.service"
@@ -57,6 +76,7 @@
           - "/etc/bash_completion.d/docker"
           - "/usr/bin/docker"
         when: "'kubeasz' not in install_info.stdout"
+    ignore_errors: true
     when: CONTAINER_RUNTIME == 'docker'
 
   - block:
@@ -82,6 +102,7 @@
         - "/opt/containerd/"
         - "/var/lib/containerd/"
         - "/var/run/containerd/"
+    ignore_errors: true
     when: CONTAINER_RUNTIME == 'containerd'
 
   - name: remove files and dirs2
@@ -104,10 +125,6 @@
     - "/etc/origin/openvswitch/"
     - "/etc/openvswitch/"
     - "/var/log/openvswitch/"
-    - "/var/run/ovn/"
-    - "/etc/origin/ovn/"
-    - "/etc/ovn/"
-    - "/var/log/ovn/"
 
 #  - name: cleanup networks1
 #    shell: "ip link del tunl0; \
diff --git a/roles/clean/tasks/main.yml b/roles/clean/tasks/main.yml
index 6d34072..19bf0a5 100644
--- a/roles/clean/tasks/main.yml
+++ b/roles/clean/tasks/main.yml
@@ -1,13 +1,13 @@
 # 
+- import_tasks: clean_etcd.yml
+  when: 'DEL_ETCD == "yes"'
+
 - import_tasks: clean_master.yml
   when: 'DEL_MASTER == "yes"'
 
 - import_tasks: clean_node.yml
   when: 'DEL_NODE == "yes"'
 
-- import_tasks: clean_etcd.yml
-  when: 'DEL_ETCD == "yes"'
-
 - import_tasks: clean_lb.yml
   when: 'DEL_LB == "yes"'