Add MountOptions field to PV spec

pkg/api/types.go

@@ -455,6 +455,10 @@ type PersistentVolumeSpec struct {
 	// means that this volume does not belong to any StorageClass.
 	// +optional
 	StorageClassName string
+	// A list of mount options, e.g. ["ro", "soft"]. Not validated - mount will
+	// simply fail if one is invalid.
+	// +optional
+	MountOptions []string
 }
 
 // PersistentVolumeReclaimPolicy describes a policy for end-of-life maintenance of persistent volumes

pkg/volume/util.go

@@ -389,12 +389,17 @@ func MountOptionFromSpec(spec *Spec, options ...string) []string {
 	pv := spec.PersistentVolume
 
 	if pv != nil {
+		// Use beta annotation first
 		if mo, ok := pv.Annotations[v1.MountOptionAnnotation]; ok {
 			moList := strings.Split(mo, ",")
 			return JoinMountOptions(moList, options)
 		}
 
+		if len(pv.Spec.MountOptions) > 0 {
+			return JoinMountOptions(pv.Spec.MountOptions, options)
+		}
 	}
+
 	return options
 }
 

staging/src/k8s.io/api/core/v1/types.go

@@ -519,6 +519,11 @@ type PersistentVolumeSpec struct {
 	// means that this volume does not belong to any StorageClass.
 	// +optional
 	StorageClassName string `json:"storageClassName,omitempty" protobuf:"bytes,6,opt,name=storageClassName"`
+	// A list of mount options, e.g. ["ro", "soft"]. Not validated - mount will
+	// simply fail if one is invalid.
+	// More info: https://kubernetes.io/docs/concepts/storage/persistent-volumes/#mount-options
+	// +optional
+	MountOptions []string `json:"mountOptions,omitempty" protobuf:"bytes,7,opt,name=mountOptions"`
 }
 
 // PersistentVolumeReclaimPolicy describes a policy for end-of-life maintenance of persistent volumes.