rancher-charts/packages/longhorn/longhorn-1.4/generated-changes/patch

--- charts-original/README.md
+++ charts/README.md
@@ -22,41 +22,14 @@
 3. Make sure `bash`, `curl`, `findmnt`, `grep`, `awk` and `blkid` has been installed in all nodes of the Kubernetes cluster.
 4. Make sure `open-iscsi` has been installed, and the `iscsid` daemon is running on all nodes of the Kubernetes cluster. For GKE, recommended Ubuntu as guest OS image since it contains `open-iscsi` already.
 
-## Installation
-1. Add Longhorn chart repository.
-```
-helm repo add longhorn https://charts.longhorn.io
-```
-
-2. Update local Longhorn chart information from chart repository.
-```
-helm repo update
-```
-
-3. Install Longhorn chart.
-- With Helm 2, the following command will create the `longhorn-system` namespace and install the Longhorn chart together.
-```
-helm install longhorn/longhorn --name longhorn --namespace longhorn-system
-``` 
-- With Helm 3, the following commands will create the `longhorn-system` namespace first, then install the Longhorn chart.
-
-```
-kubectl create namespace longhorn-system
-helm install longhorn longhorn/longhorn --namespace longhorn-system
-```
-
 ## Uninstallation
 
-With Helm 2 to uninstall Longhorn.
-```
-helm delete longhorn --purge
-```
-
-With Helm 3 to uninstall Longhorn.
-```
-helm uninstall longhorn -n longhorn-system
-kubectl delete namespace longhorn-system
-```
+To prevent Longhorn from being accidentally uninstalled (which leads to data lost), we introduce a new setting, deleting-confirmation-flag. If this flag is **false**, the Longhorn uninstallation job will fail. Set this flag to **true** to allow Longhorn uninstallation. You can set this flag using setting page in Longhorn UI or `kubectl -n longhorn-system patch -p '{"value": "true"}' --type=merge lhs deleting-confirmation-flag`
+
+To prevent damage to the Kubernetes cluster, we recommend deleting all Kubernetes workloads using Longhorn volumes (PersistentVolume, PersistentVolumeClaim, StorageClass, Deployment, StatefulSet, DaemonSet, etc).
+
+From Rancher Cluster Explorer UI, navigate to Apps page, delete app `longhorn` then app `longhorn-crd` in Installed Apps tab.
+
 
 ---
 Please see [link](https://github.com/longhorn/longhorn) for more information.