diff --git a/docs/cephfs-snap-clone.md b/docs/cephfs-snap-clone.md
index 18a4261cf..848b43da4 100644
--- a/docs/cephfs-snap-clone.md
+++ b/docs/cephfs-snap-clone.md
@@ -35,6 +35,8 @@ kubectl create -f ../examples/cephfs/snapshotclass.yaml
 
 The snapshot is created on/for an existing PVC. You should
 have a PVC in bound state before creating snapshot from it.
+It is recommended to create a volume snapshot or a PVC clone
+only when the PVC is not in use.
 Please refer pvc creation [doc](https://github.com/ceph/ceph-csi/blob/master/docs/deploy-cephfs.md)
 for more information on how to create a PVC.
 
diff --git a/examples/README.md b/examples/README.md
index 8137f3461..0970f6424 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -75,6 +75,9 @@ your Ceph cluster setup.
 If you followed the documentation to create the rbdplugin, you shouldn't
 have to edit any other file.
 
+Note that it is recommended to create a volume snapshot or a PVC clone
+only when the PVC is not in use.
+
 After configuring everything you needed, deploy the snapshot class:
 
 ```bash