changed claimed validation from length check to specific storage check

pkg/api/validation/validation.go

@@ -422,8 +422,8 @@ func ValidatePersistentVolumeClaim(pvc *api.PersistentVolumeClaim) errs.Validati
 	if len(pvc.Spec.AccessModes) == 0 {
 		allErrs = append(allErrs, errs.NewFieldInvalid("persistentVolumeClaim.Spec.AccessModes", pvc.Spec.AccessModes, "at least 1 AccessModeType is required"))
 	}
-	if len(pvc.Spec.Resources.Requests) == 0 {
-		allErrs = append(allErrs, errs.NewFieldInvalid("persistentVolumeClaim.Spec.Resources.Requests", pvc.Spec.Resources.Requests, "No Resource.Requests specified"))
+	if _, ok := pvc.Spec.Resources.Requests[api.ResourceStorage]; !ok {
+		allErrs = append(allErrs, errs.NewFieldInvalid("persistentVolumeClaim.Spec.Resources.Requests", pvc.Spec.Resources.Requests, "No Storage size specified"))
 	}
 	return allErrs
 }

pkg/api/validation/validation_test.go

@@ -353,6 +353,19 @@ func TestValidatePersistentVolumeClaim(t *testing.T) {
 				},
 			}),
 		},
+		"invalid-resource-requests": {
+			isExpectedFailure: true,
+			claim: testVolumeClaim("foo", "ns", api.PersistentVolumeClaimSpec{
+				AccessModes: []api.AccessModeType{
+					api.ReadWriteOnce,
+				},
+				Resources: api.ResourceRequirements{
+					Requests: api.ResourceList{
+						api.ResourceName(api.ResourceMemory): resource.MustParse("10G"),
+					},
+				},
+			}),
+		},
 	}
 
 	for name, scenario := range scenarios {