diff --git a/pkg/apis/core/types.go b/pkg/apis/core/types.go
index 11e1664eed..1574a83340 100644
--- a/pkg/apis/core/types.go
+++ b/pkg/apis/core/types.go
@@ -1513,10 +1513,14 @@ type KeyToPath struct {
 type LocalVolumeSource struct {
 	// The full path to the volume on the node.
 	// It can be either a directory or block device (disk, partition, ...).
-	// Directories can be represented only by PersistentVolume with VolumeMode=Filesystem.
-	// Block devices can be represented only by VolumeMode=Block, which also requires the
-	// BlockVolume alpha feature gate to be enabled.
 	Path string
+
+	// Filesystem type to mount.
+	// It applies only when the Path is a block device.
+	// Must be a filesystem type supported by the host operating system.
+	// Ex. "ext4", "xfs", "ntfs". The default value is to auto-select a fileystem if unspecified.
+	// +optional
+	FSType *string
 }
 
 // Represents storage that is managed by an external CSI volume driver (Beta feature)
diff --git a/staging/src/k8s.io/api/core/v1/types.go b/staging/src/k8s.io/api/core/v1/types.go
index 893e0fdc72..a316657dc8 100644
--- a/staging/src/k8s.io/api/core/v1/types.go
+++ b/staging/src/k8s.io/api/core/v1/types.go
@@ -1601,10 +1601,14 @@ type KeyToPath struct {
 type LocalVolumeSource struct {
 	// The full path to the volume on the node.
 	// It can be either a directory or block device (disk, partition, ...).
-	// Directories can be represented only by PersistentVolume with VolumeMode=Filesystem.
-	// Block devices can be represented only by VolumeMode=Block, which also requires the
-	// BlockVolume alpha feature gate to be enabled.
 	Path string `json:"path" protobuf:"bytes,1,opt,name=path"`
+
+	// Filesystem type to mount.
+	// It applies only when the Path is a block device.
+	// Must be a filesystem type supported by the host operating system.
+	// Ex. "ext4", "xfs", "ntfs". The default value is to auto-select a fileystem if unspecified.
+	// +optional
+	FSType *string `json:"fsType,omitempty" protobuf:"bytes,2,opt,name=fsType"`
 }
 
 // Represents storage that is managed by an external CSI volume driver (Beta feature)