fsGroupPolicy feature is Beta from Kubernetes 1.20 and GA from Kubernetes 1.23. It is disabled by default up to version 3.1.0 of the chart and enabled by default from version 4.0.0 of the chart, follow below steps to enable this feature in older charts.
Option#1: Enable fsGroupPolicy support in driver helm installation
add --set feature.enableFSGroupPolicy=true
in helm installation command.
kubectl delete CSIDriver nfs.csi.k8s.io
cat <<EOF | kubectl create -f -
apiVersion: storage.k8s.io/v1beta1
kind: CSIDriver
metadata:
name: nfs.csi.k8s.io
spec:
attachRequired: false
volumeLifecycleModes:
- Persistent
fsGroupPolicy: File
EOF