diff --git a/README.md b/README.md
index 8540e1f..0ca5802 100644
--- a/README.md
+++ b/README.md
@@ -204,6 +204,7 @@ More examples are available at `./examples/`
 ### [Multiple disks](./docs/multidisk.md)
 ### [iSCSI](./docs/iscsi.md)
 ### [Base image](./docs/base-image.md)
+### [Kubernetes workload in Longhorn UI](./docs/k8s-workload.md)
 
 ### [Restoring Stateful Set volumes](./docs/restore_statefulset.md)
 ### [Google Kubernetes Engine](./docs/gke.md)
diff --git a/docs/k8s-workload.md b/docs/k8s-workload.md
new file mode 100644
index 0000000..08ae873
--- /dev/null
+++ b/docs/k8s-workload.md
@@ -0,0 +1,39 @@
+# Workload identification for volume
+Now users can identify current workloads or workload history for existing Longhorn volumes.
+```
+PV Name: test1-pv
+PV Status: Bound
+
+Namespace: default
+PVC Name: test1-pvc
+
+Last Pod Name: volume-test-1
+Last Pod Status: Running
+Last Workload Name: volume-test
+Last Workload Type: Statefulset
+Last time used by Pod: a few seconds ago
+```
+
+## About historical status
+There are a few fields can contain the historical status instead of the current status. 
+Those fields can be used to help users figuring out which workload has used the volume in the past:
+
+1. `Last time bound with PVC`: If this field is set, it indicates currently there is no bounded PVC for this volume. 
+The related fields will show the most recent bounded PVC. 
+2. `Last time used by Pod`: If these fields are set, they indicates currently there is no workload using this volume. 
+The related fields will show the most recent workload using this volume.
+
+# PV/PVC creation for existing Longhorn volume
+Now users can create PV/PVC via our Longhorn UI for the existing Longhorn volumes. 
+Only detached volume can be used by newly created pod.
+
+## About special fields of PV/PVC
+Since the Longhorn volume already exists while creating PV/PVC, StorageClass is not needed for dynamically provisioning 
+Longhorn volume. However, the field `storageClassName` would be set in PVC/PV, to be used for PVC bounding purpose. And
+it's unnecessary for users create the related StorageClass object. 
+
+By default the StorageClass for Longhorn created PV/PVC is `longhorn-static`. Users can modified it in 
+`Setting - General - Default Longhorn Static StorageClass Name` as they need.
+
+Users need to manually delete PVC and PV created by Longhorn.
+