KubernetesでUserNamespacesSupportが有効になっていると、ポッドでNFSを使用してPVCをマウントできない

環境

• Astra Trident
• NFS
•   UserNamespacesSupport機能ゲートが有効なKubernetes
• hostUsers: false ポッド仕様 

問題

• PODがNFSを使用してPVCをマウントできない
• kubectl describe pod 警告を表示：

Warning  Failed          12s (x2 over 15s)  kubelet          Error: failed to create containerd task: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: failed to fulfil mount request: failed to set MOUNT_ATTR_IDMAP on /var/lib/kubelet/pods/xxxxxxxx-xxxx-xxxx-xxxxxxxxxxxx/volumes/kubernetes.io~csi/xxxxxxxx-xxxx-xxxx-xxxxxxxxxxxx/mount: invalid argument (maybe the filesystem used doesn't support idmap mounts on this kernel?): unknown