kubernetes/pkg/volume/util/storageclass.go

const IsDefaultStorageClassAnnotation …

const BetaIsDefaultStorageClassAnnotation …

// GetDefaultClass returns the default StorageClass from the store, or nil.
func GetDefaultClass(lister storagev1listers.StorageClassLister) (*storagev1.StorageClass, error) { … }

// IsDefaultAnnotation returns a boolean if the default storage class
// annotation is set
// TODO: remove Beta when no longer needed
func IsDefaultAnnotation(obj metav1.ObjectMeta) bool { … }