DRA: remove immediate allocation

As agreed in https://github.com/kubernetes/enhancements/pull/4709, immediate
allocation is one of those features which can be removed because it makes no
sense for structured parameters and the justification for classic DRA is weak.

api/openapi-spec/swagger.json

@@ -15589,10 +15589,6 @@
     "io.k8s.api.resource.v1alpha3.ResourceClaimSpec": {
       "description": "ResourceClaimSpec defines how a resource is to be allocated.",
       "properties": {
-        "allocationMode": {
-          "description": "Allocation can start immediately or when a Pod wants to use the resource. \"WaitForFirstConsumer\" is the default.",
-          "type": "string"
-        },
         "parametersRef": {
           "$ref": "#/definitions/io.k8s.api.resource.v1alpha3.ResourceClaimParametersReference",
           "description": "ParametersRef references a separate object with arbitrary parameters that will be used by the driver when allocating a resource for the claim.\n\nThe object must be in the same namespace as the ResourceClaim."

api/openapi-spec/v3/apis__resource.k8s.io__v1alpha3_openapi.json

@@ -762,10 +762,6 @@
       "io.k8s.api.resource.v1alpha3.ResourceClaimSpec": {
         "description": "ResourceClaimSpec defines how a resource is to be allocated.",
         "properties": {
-          "allocationMode": {
-            "description": "Allocation can start immediately or when a Pod wants to use the resource. \"WaitForFirstConsumer\" is the default.",
-            "type": "string"
-          },
           "parametersRef": {
             "allOf": [
               {

pkg/api/testing/defaulting_test.go

@@ -135,10 +135,6 @@ func TestDefaulting(t *testing.T) {
 		{Group: "rbac.authorization.k8s.io", Version: "v1", Kind: "ClusterRoleBindingList"}:                        {},
 		{Group: "rbac.authorization.k8s.io", Version: "v1", Kind: "RoleBinding"}:                                   {},
 		{Group: "rbac.authorization.k8s.io", Version: "v1", Kind: "RoleBindingList"}:                               {},
-		{Group: "resource.k8s.io", Version: "v1alpha3", Kind: "ResourceClaim"}:                                     {},
-		{Group: "resource.k8s.io", Version: "v1alpha3", Kind: "ResourceClaimList"}:                                 {},
-		{Group: "resource.k8s.io", Version: "v1alpha3", Kind: "ResourceClaimTemplate"}:                             {},
-		{Group: "resource.k8s.io", Version: "v1alpha3", Kind: "ResourceClaimTemplateList"}:                         {},
 		{Group: "admissionregistration.k8s.io", Version: "v1alpha1", Kind: "ValidatingAdmissionPolicy"}:            {},
 		{Group: "admissionregistration.k8s.io", Version: "v1alpha1", Kind: "ValidatingAdmissionPolicyList"}:        {},
 		{Group: "admissionregistration.k8s.io", Version: "v1alpha1", Kind: "ValidatingAdmissionPolicyBinding"}:     {},

pkg/apis/resource/fuzzer/fuzzer.go

@@ -17,24 +17,10 @@ limitations under the License.
 package fuzzer
 
 import (
-	fuzz "github.com/google/gofuzz"
-
 	runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer"
-	"k8s.io/kubernetes/pkg/apis/resource"
 )
 
 // Funcs contains the fuzzer functions for the resource group.
 var Funcs = func(codecs runtimeserializer.CodecFactory) []interface{} {
-	return []interface{}{
-		func(obj *resource.ResourceClaimSpec, c fuzz.Continue) {
-			c.FuzzNoCustom(obj) // fuzz self without calling this function again
-
-			// Custom fuzzing for allocation mode: pick one valid mode randomly.
-			modes := []resource.AllocationMode{
-				resource.AllocationModeImmediate,
-				resource.AllocationModeWaitForFirstConsumer,
-			}
-			obj.AllocationMode = modes[c.Rand.Intn(len(modes))]
-		},
-	}
+	return nil
 }

pkg/apis/resource/types.go

@@ -62,34 +62,8 @@ type ResourceClaimSpec struct {
 	// The object must be in the same namespace as the ResourceClaim.
 	// +optional
 	ParametersRef *ResourceClaimParametersReference
-
-	// Allocation can start immediately or when a Pod wants to use the
-	// resource. "WaitForFirstConsumer" is the default.
-	// +optional
-	AllocationMode AllocationMode
 }
 
-// AllocationMode describes whether a ResourceClaim gets allocated immediately
-// when it gets created (AllocationModeImmediate) or whether allocation is
-// delayed until it is needed for a Pod
-// (AllocationModeWaitForFirstConsumer). Other modes might get added in the
-// future.
-type AllocationMode string
-
-const (
-	// When a ResourceClaim has AllocationModeWaitForFirstConsumer, allocation is
-	// delayed until a Pod gets scheduled that needs the ResourceClaim. The
-	// scheduler will consider all resource requirements of that Pod and
-	// trigger allocation for a node that fits the Pod.
-	AllocationModeWaitForFirstConsumer AllocationMode = "WaitForFirstConsumer"
-
-	// When a ResourceClaim has AllocationModeImmediate, allocation starts
-	// as soon as the ResourceClaim gets created. This is done without
-	// considering the needs of Pods that will use the ResourceClaim
-	// because those Pods are not known yet.
-	AllocationModeImmediate AllocationMode = "Immediate"
-)
-
 // ResourceClaimStatus tracks whether the resource has been allocated and what
 // the resulting attributes are.
 type ResourceClaimStatus struct {

pkg/apis/resource/v1alpha3/defaults.go

@@ -17,16 +17,9 @@ limitations under the License.
 package v1alpha3
 
 import (
-	"k8s.io/api/resource/v1alpha3"
 	"k8s.io/apimachinery/pkg/runtime"
 )
 
 func addDefaultingFuncs(scheme *runtime.Scheme) error {
 	return RegisterDefaults(scheme)
 }
-
-func SetDefaults_ResourceClaimSpec(obj *v1alpha3.ResourceClaimSpec) {
-	if obj.AllocationMode == "" {
-		obj.AllocationMode = v1alpha3.AllocationModeWaitForFirstConsumer
-	}
-}

pkg/apis/resource/v1alpha3/defaults_test.go

@@ -1,75 +0,0 @@
-/*
-Copyright 2022 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package v1alpha3_test
-
-import (
-	"reflect"
-	"testing"
-
-	v1alpha3 "k8s.io/api/resource/v1alpha3"
-	"k8s.io/apimachinery/pkg/runtime"
-
-	// ensure types are installed
-	"k8s.io/kubernetes/pkg/api/legacyscheme"
-	_ "k8s.io/kubernetes/pkg/apis/resource/install"
-)
-
-func TestSetDefaultAllocationMode(t *testing.T) {
-	claim := &v1alpha3.ResourceClaim{}
-
-	// field should be defaulted
-	defaultMode := v1alpha3.AllocationModeWaitForFirstConsumer
-	output := roundTrip(t, runtime.Object(claim)).(*v1alpha3.ResourceClaim)
-	outMode := output.Spec.AllocationMode
-	if outMode != defaultMode {
-		t.Errorf("Expected AllocationMode to be defaulted to: %+v, got: %+v", defaultMode, outMode)
-	}
-
-	// field should not change
-	nonDefaultMode := v1alpha3.AllocationModeImmediate
-	claim = &v1alpha3.ResourceClaim{
-		Spec: v1alpha3.ResourceClaimSpec{
-			AllocationMode: nonDefaultMode,
-		},
-	}
-	output = roundTrip(t, runtime.Object(claim)).(*v1alpha3.ResourceClaim)
-	outMode = output.Spec.AllocationMode
-	if outMode != v1alpha3.AllocationModeImmediate {
-		t.Errorf("Expected AllocationMode to remain %+v, got: %+v", nonDefaultMode, outMode)
-	}
-}
-
-func roundTrip(t *testing.T, obj runtime.Object) runtime.Object {
-	codec := legacyscheme.Codecs.LegacyCodec(v1alpha3.SchemeGroupVersion)
-	data, err := runtime.Encode(codec, obj)
-	if err != nil {
-		t.Errorf("%v\n %#v", err, obj)
-		return nil
-	}
-	obj2, err := runtime.Decode(codec, data)
-	if err != nil {
-		t.Errorf("%v\nData: %s\nSource: %#v", err, string(data), obj)
-		return nil
-	}
-	obj3 := reflect.New(reflect.TypeOf(obj).Elem()).Interface().(runtime.Object)
-	err = legacyscheme.Scheme.Convert(obj2, obj3, nil)
-	if err != nil {
-		t.Errorf("%v\nSource: %#v", err, obj2)
-		return nil
-	}
-	return obj3
-}

pkg/apis/resource/v1alpha3/zz_generated.conversion.go

@@ -1159,7 +1159,6 @@ func Convert_resource_ResourceClaimSchedulingStatus_To_v1alpha3_ResourceClaimSch
 func autoConvert_v1alpha3_ResourceClaimSpec_To_resource_ResourceClaimSpec(in *v1alpha3.ResourceClaimSpec, out *resource.ResourceClaimSpec, s conversion.Scope) error {
 	out.ResourceClassName = in.ResourceClassName
 	out.ParametersRef = (*resource.ResourceClaimParametersReference)(unsafe.Pointer(in.ParametersRef))
-	out.AllocationMode = resource.AllocationMode(in.AllocationMode)
 	return nil
 }
 
@@ -1171,7 +1170,6 @@ func Convert_v1alpha3_ResourceClaimSpec_To_resource_ResourceClaimSpec(in *v1alph
 func autoConvert_resource_ResourceClaimSpec_To_v1alpha3_ResourceClaimSpec(in *resource.ResourceClaimSpec, out *v1alpha3.ResourceClaimSpec, s conversion.Scope) error {
 	out.ResourceClassName = in.ResourceClassName
 	out.ParametersRef = (*v1alpha3.ResourceClaimParametersReference)(unsafe.Pointer(in.ParametersRef))
-	out.AllocationMode = v1alpha3.AllocationMode(in.AllocationMode)
 	return nil
 }
 

pkg/apis/resource/v1alpha3/zz_generated.defaults.go

@@ -22,7 +22,6 @@ limitations under the License.
 package v1alpha3
 
 import (
-	v1alpha3 "k8s.io/api/resource/v1alpha3"
 	runtime "k8s.io/apimachinery/pkg/runtime"
 )
 
@@ -30,33 +29,5 @@ import (
 // Public to allow building arbitrary schemes.
 // All generated defaulters are covering - they call all nested defaulters.
 func RegisterDefaults(scheme *runtime.Scheme) error {
-	scheme.AddTypeDefaultingFunc(&v1alpha3.ResourceClaim{}, func(obj interface{}) { SetObjectDefaults_ResourceClaim(obj.(*v1alpha3.ResourceClaim)) })
-	scheme.AddTypeDefaultingFunc(&v1alpha3.ResourceClaimList{}, func(obj interface{}) { SetObjectDefaults_ResourceClaimList(obj.(*v1alpha3.ResourceClaimList)) })
-	scheme.AddTypeDefaultingFunc(&v1alpha3.ResourceClaimTemplate{}, func(obj interface{}) { SetObjectDefaults_ResourceClaimTemplate(obj.(*v1alpha3.ResourceClaimTemplate)) })
-	scheme.AddTypeDefaultingFunc(&v1alpha3.ResourceClaimTemplateList{}, func(obj interface{}) {
-		SetObjectDefaults_ResourceClaimTemplateList(obj.(*v1alpha3.ResourceClaimTemplateList))
-	})
 	return nil
 }
-
-func SetObjectDefaults_ResourceClaim(in *v1alpha3.ResourceClaim) {
-	SetDefaults_ResourceClaimSpec(&in.Spec)
-}
-
-func SetObjectDefaults_ResourceClaimList(in *v1alpha3.ResourceClaimList) {
-	for i := range in.Items {
-		a := &in.Items[i]
-		SetObjectDefaults_ResourceClaim(a)
-	}
-}
-
-func SetObjectDefaults_ResourceClaimTemplate(in *v1alpha3.ResourceClaimTemplate) {
-	SetDefaults_ResourceClaimSpec(&in.Spec.Spec)
-}
-
-func SetObjectDefaults_ResourceClaimTemplateList(in *v1alpha3.ResourceClaimTemplateList) {
-	for i := range in.Items {
-		a := &in.Items[i]
-		SetObjectDefaults_ResourceClaimTemplate(a)
-	}
-}

pkg/apis/resource/validation/validation.go

@@ -46,14 +46,9 @@ func validateResourceClaimSpec(spec *resource.ResourceClaimSpec, fldPath *field.
 		allErrs = append(allErrs, field.Invalid(fldPath.Child("resourceClassName"), spec.ResourceClassName, msg))
 	}
 	allErrs = append(allErrs, validateResourceClaimParametersRef(spec.ParametersRef, fldPath.Child("parametersRef"))...)
-	if !supportedAllocationModes.Has(string(spec.AllocationMode)) {
-		allErrs = append(allErrs, field.NotSupported(fldPath.Child("allocationMode"), spec.AllocationMode, supportedAllocationModes.List()))
-	}
 	return allErrs
 }
 
-var supportedAllocationModes = sets.NewString(string(resource.AllocationModeImmediate), string(resource.AllocationModeWaitForFirstConsumer))
-
 // It would have been nice to use Go generics to reuse the same validation
 // function for Kind and Name in both types, but generics cannot be used to
 // access common fields in structs.

pkg/apis/resource/validation/validation_resourceclaim_test.go

@@ -42,14 +42,11 @@ func testClaim(name, namespace string, spec resource.ResourceClaimSpec) *resourc
 }
 
 func TestValidateClaim(t *testing.T) {
-	validMode := resource.AllocationModeImmediate
-	invalidMode := resource.AllocationMode("invalid")
 	goodName := "foo"
 	badName := "!@#$%^"
 	goodNS := "ns"
 	goodClaimSpec := resource.ResourceClaimSpec{
 		ResourceClassName: goodName,
-		AllocationMode:    validMode,
 	}
 	now := metav1.Now()
 	badValue := "spaces not allowed"
@@ -200,14 +197,6 @@ func TestValidateClaim(t *testing.T) {
 				return claim
 			}(),
 		},
-		"bad-mode": {
-			wantFailures: field.ErrorList{field.NotSupported(field.NewPath("spec", "allocationMode"), invalidMode, supportedAllocationModes.List())},
-			claim: func() *resource.ResourceClaim {
-				claim := testClaim(goodName, goodNS, goodClaimSpec)
-				claim.Spec.AllocationMode = invalidMode
-				return claim
-			}(),
-		},
 		"good-parameters": {
 			claim: func() *resource.ResourceClaim {
 				claim := testClaim(goodName, goodNS, goodClaimSpec)
@@ -279,7 +268,6 @@ func TestValidateClaimUpdate(t *testing.T) {
 	}
 	validClaim := testClaim("foo", "ns", resource.ResourceClaimSpec{
 		ResourceClassName: name,
-		AllocationMode:    resource.AllocationModeImmediate,
 		ParametersRef:     parameters,
 	})
 
@@ -316,18 +304,6 @@ func TestValidateClaimUpdate(t *testing.T) {
 				return claim
 			},
 		},
-		"invalid-update-mode": {
-			wantFailures: field.ErrorList{field.Invalid(field.NewPath("spec"), func() resource.ResourceClaimSpec {
-				spec := validClaim.Spec.DeepCopy()
-				spec.AllocationMode = resource.AllocationModeWaitForFirstConsumer
-				return *spec
-			}(), "field is immutable")},
-			oldClaim: validClaim,
-			update: func(claim *resource.ResourceClaim) *resource.ResourceClaim {
-				claim.Spec.AllocationMode = resource.AllocationModeWaitForFirstConsumer
-				return claim
-			},
-		},
 	}
 
 	for name, scenario := range scenarios {
@@ -343,7 +319,6 @@ func TestValidateClaimStatusUpdate(t *testing.T) {
 	invalidName := "!@#$%^"
 	validClaim := testClaim("foo", "ns", resource.ResourceClaimSpec{
 		ResourceClassName: "valid",
-		AllocationMode:    resource.AllocationModeImmediate,
 	})
 
 	validAllocatedClaim := validClaim.DeepCopy()

pkg/apis/resource/validation/validation_resourceclaimtemplate_test.go

@@ -40,14 +40,11 @@ func testClaimTemplate(name, namespace string, spec resource.ResourceClaimSpec)
 }
 
 func TestValidateClaimTemplate(t *testing.T) {
-	validMode := resource.AllocationModeImmediate
-	invalidMode := resource.AllocationMode("invalid")
 	goodName := "foo"
 	badName := "!@#$%^"
 	goodNS := "ns"
 	goodClaimSpec := resource.ResourceClaimSpec{
 		ResourceClassName: goodName,
-		AllocationMode:    validMode,
 	}
 	now := metav1.Now()
 	badValue := "spaces not allowed"
@@ -198,14 +195,6 @@ func TestValidateClaimTemplate(t *testing.T) {
 				return template
 			}(),
 		},
-		"bad-mode": {
-			wantFailures: field.ErrorList{field.NotSupported(field.NewPath("spec", "spec", "allocationMode"), invalidMode, supportedAllocationModes.List())},
-			template: func() *resource.ResourceClaimTemplate {
-				template := testClaimTemplate(goodName, goodNS, goodClaimSpec)
-				template.Spec.Spec.AllocationMode = invalidMode
-				return template
-			}(),
-		},
 		"good-parameters": {
 			template: func() *resource.ResourceClaimTemplate {
 				template := testClaimTemplate(goodName, goodNS, goodClaimSpec)
@@ -277,7 +266,6 @@ func TestValidateClaimTemplateUpdate(t *testing.T) {
 	}
 	validClaimTemplate := testClaimTemplate("foo", "ns", resource.ResourceClaimSpec{
 		ResourceClassName: name,
-		AllocationMode:    resource.AllocationModeImmediate,
 		ParametersRef:     parameters,
 	})
 
@@ -314,18 +302,6 @@ func TestValidateClaimTemplateUpdate(t *testing.T) {
 				return template
 			},
 		},
-		"invalid-update-mode": {
-			wantFailures: field.ErrorList{field.Invalid(field.NewPath("spec"), func() resource.ResourceClaimTemplateSpec {
-				spec := validClaimTemplate.Spec.DeepCopy()
-				spec.Spec.AllocationMode = resource.AllocationModeWaitForFirstConsumer
-				return *spec
-			}(), "field is immutable")},
-			oldClaimTemplate: validClaimTemplate,
-			update: func(template *resource.ResourceClaimTemplate) *resource.ResourceClaimTemplate {
-				template.Spec.Spec.AllocationMode = resource.AllocationModeWaitForFirstConsumer
-				return template
-			},
-		},
 	}
 
 	for name, scenario := range scenarios {

pkg/controller/resourceclaim/controller.go

@@ -329,8 +329,7 @@ func (ec *Controller) podNeedsWork(pod *v1.Pod) (bool, string) {
 		// - a user created a pod with spec.nodeName set, perhaps for testing
 		// - some scheduler was used which is unaware of DRA
 		// - DRA was not enabled in kube-scheduler (version skew, configuration)
-		if claim.Spec.AllocationMode == resourceapi.AllocationModeWaitForFirstConsumer &&
-			claim.Status.Allocation == nil {
+		if claim.Status.Allocation == nil {
 			scheduling, err := ec.podSchedulingLister.PodSchedulingContexts(pod.Namespace).Get(pod.Name)
 			if apierrors.IsNotFound(err) {
 				return true, "need to create PodSchedulingContext for scheduled pod"
@@ -533,8 +532,7 @@ func (ec *Controller) syncPod(ctx context.Context, namespace, name string) error
 				return err
 			}
 		}
-		if claim.Spec.AllocationMode == resourceapi.AllocationModeWaitForFirstConsumer &&
-			claim.Status.Allocation == nil {
+		if claim.Status.Allocation == nil {
 			logger.V(5).Info("create PodSchedulingContext because claim needs to be allocated", "resourceClaim", klog.KObj(claim))
 			return ec.ensurePodSchedulingContext(ctx, pod)
 		}
@@ -864,19 +862,14 @@ func (ec *Controller) syncClaim(ctx context.Context, namespace, name string) err
 		// for such claims and not checking for them keeps this code simpler.
 		if len(valid) == 0 {
 			if builtinControllerFinalizer >= 0 {
-				if claim.Spec.AllocationMode == resourceapi.AllocationModeWaitForFirstConsumer ||
-					claim.DeletionTimestamp != nil {
-					// Allocated by scheduler with structured parameters. We can "deallocate"
-					// by clearing the allocation.
-					claim.Status.Allocation = nil
-				}
-			} else if claim.Spec.AllocationMode == resourceapi.AllocationModeWaitForFirstConsumer {
+				// Allocated by scheduler with structured parameters. We can "deallocate"
+				// by clearing the allocation.
+				claim.Status.Allocation = nil
+			} else {
 				// DRA driver controller in the control plane
 				// needs to do the deallocation.
 				claim.Status.DeallocationRequested = true
 			}
-			// In all other cases, we keep the claim allocated, in particular for immediate allocation
-			// with a control plane controller.
 		}
 
 		claim, err := ec.kubeClient.ResourceV1alpha3().ResourceClaims(claim.Namespace).UpdateStatus(ctx, claim, metav1.UpdateOptions{})

pkg/controller/resourceclaim/controller_test.go

@@ -281,7 +281,7 @@ func TestSyncHandler(t *testing.T) {
 			expectedMetrics: expectedMetrics{0, 0},
 		},
 		{
-			name:   "clear-reserved-delayed-allocation",
+			name:   "clear-reserved",
 			pods:   []*v1.Pod{},
 			key:    claimKey(testClaimReserved),
 			claims: []*resourceapi.ResourceClaim{testClaimReserved},
@@ -293,7 +293,7 @@ func TestSyncHandler(t *testing.T) {
 			expectedMetrics: expectedMetrics{0, 0},
 		},
 		{
-			name:   "clear-reserved-delayed-allocation-structured",
+			name:   "clear-reserved-structured",
 			pods:   []*v1.Pod{},
 			key:    claimKey(testClaimReserved),
 			claims: []*resourceapi.ResourceClaim{structuredParameters(testClaimReserved)},
@@ -306,7 +306,7 @@ func TestSyncHandler(t *testing.T) {
 			expectedMetrics: expectedMetrics{0, 0},
 		},
 		{
-			name: "dont-clear-reserved-delayed-allocation-structured",
+			name: "dont-clear-reserved-structured",
 			pods: []*v1.Pod{testPodWithResource},
 			key:  claimKey(testClaimReserved),
 			claims: func() []*resourceapi.ResourceClaim {
@@ -318,50 +318,16 @@ func TestSyncHandler(t *testing.T) {
 			expectedMetrics: expectedMetrics{0, 0},
 		},
 		{
-			name: "clear-reserved-immediate-allocation",
-			pods: []*v1.Pod{},
-			key:  claimKey(testClaimReserved),
-			claims: func() []*resourceapi.ResourceClaim {
-				claim := testClaimReserved.DeepCopy()
-				claim.Spec.AllocationMode = resourceapi.AllocationModeImmediate
-				return []*resourceapi.ResourceClaim{claim}
-			}(),
-			expectedClaims: func() []resourceapi.ResourceClaim {
-				claim := testClaimAllocated.DeepCopy()
-				claim.Spec.AllocationMode = resourceapi.AllocationModeImmediate
-				return []resourceapi.ResourceClaim{*claim}
-			}(),
-			expectedMetrics: expectedMetrics{0, 0},
-		},
-		{
-			name: "clear-reserved-immediate-allocation-structured",
+			name: "clear-reserved-structured-deleted",
 			pods: []*v1.Pod{},
 			key:  claimKey(testClaimReserved),
 			claims: func() []*resourceapi.ResourceClaim {
 				claim := structuredParameters(testClaimReserved.DeepCopy())
-				claim.Spec.AllocationMode = resourceapi.AllocationModeImmediate
-				return []*resourceapi.ResourceClaim{claim}
-			}(),
-			expectedClaims: func() []resourceapi.ResourceClaim {
-				claim := structuredParameters(testClaimAllocated.DeepCopy())
-				claim.Spec.AllocationMode = resourceapi.AllocationModeImmediate
-				return []resourceapi.ResourceClaim{*claim}
-			}(),
-			expectedMetrics: expectedMetrics{0, 0},
-		},
-		{
-			name: "clear-reserved-immediate-allocation-structured-deleted",
-			pods: []*v1.Pod{},
-			key:  claimKey(testClaimReserved),
-			claims: func() []*resourceapi.ResourceClaim {
-				claim := structuredParameters(testClaimReserved.DeepCopy())
-				claim.Spec.AllocationMode = resourceapi.AllocationModeImmediate
 				claim.DeletionTimestamp = &metav1.Time{}
 				return []*resourceapi.ResourceClaim{claim}
 			}(),
 			expectedClaims: func() []resourceapi.ResourceClaim {
 				claim := structuredParameters(testClaimAllocated.DeepCopy())
-				claim.Spec.AllocationMode = resourceapi.AllocationModeImmediate
 				claim.DeletionTimestamp = &metav1.Time{}
 				claim.Finalizers = []string{}
 				claim.Status.Allocation = nil
@@ -370,18 +336,16 @@ func TestSyncHandler(t *testing.T) {
 			expectedMetrics: expectedMetrics{0, 0},
 		},
 		{
-			name: "immediate-allocation-structured-deleted",
+			name: "structured-deleted",
 			pods: []*v1.Pod{},
 			key:  claimKey(testClaimReserved),
 			claims: func() []*resourceapi.ResourceClaim {
 				claim := structuredParameters(testClaimAllocated.DeepCopy())
-				claim.Spec.AllocationMode = resourceapi.AllocationModeImmediate
 				claim.DeletionTimestamp = &metav1.Time{}
 				return []*resourceapi.ResourceClaim{claim}
 			}(),
 			expectedClaims: func() []resourceapi.ResourceClaim {
 				claim := structuredParameters(testClaimAllocated.DeepCopy())
-				claim.Spec.AllocationMode = resourceapi.AllocationModeImmediate
 				claim.DeletionTimestamp = &metav1.Time{}
 				claim.Finalizers = []string{}
 				claim.Status.Allocation = nil
@@ -390,7 +354,7 @@ func TestSyncHandler(t *testing.T) {
 			expectedMetrics: expectedMetrics{0, 0},
 		},
 		{
-			name: "clear-reserved-when-done-delayed-allocation",
+			name: "clear-reserved-when-done",
 			pods: func() []*v1.Pod {
 				pods := []*v1.Pod{testPodWithResource.DeepCopy()}
 				pods[0].Status.Phase = v1.PodSucceeded
@@ -410,28 +374,6 @@ func TestSyncHandler(t *testing.T) {
 			}(),
 			expectedMetrics: expectedMetrics{0, 0},
 		},
-		{
-			name: "clear-reserved-when-done-immediate-allocation",
-			pods: func() []*v1.Pod {
-				pods := []*v1.Pod{testPodWithResource.DeepCopy()}
-				pods[0].Status.Phase = v1.PodSucceeded
-				return pods
-			}(),
-			key: claimKey(testClaimReserved),
-			claims: func() []*resourceapi.ResourceClaim {
-				claims := []*resourceapi.ResourceClaim{testClaimReserved.DeepCopy()}
-				claims[0].OwnerReferences = nil
-				claims[0].Spec.AllocationMode = resourceapi.AllocationModeImmediate
-				return claims
-			}(),
-			expectedClaims: func() []resourceapi.ResourceClaim {
-				claims := []resourceapi.ResourceClaim{*testClaimAllocated.DeepCopy()}
-				claims[0].OwnerReferences = nil
-				claims[0].Spec.AllocationMode = resourceapi.AllocationModeImmediate
-				return claims
-			}(),
-			expectedMetrics: expectedMetrics{0, 0},
-		},
 		{
 			name:            "remove-reserved",
 			pods:            []*v1.Pod{testPod},
@@ -587,7 +529,6 @@ func makeClaim(name, namespace, classname string, owner *metav1.OwnerReference)
 		ObjectMeta: metav1.ObjectMeta{Name: name, Namespace: namespace},
 		Spec: resourceapi.ResourceClaimSpec{
 			ResourceClassName: classname,
-			AllocationMode:    resourceapi.AllocationModeWaitForFirstConsumer,
 		},
 	}
 	if owner != nil {
@@ -607,7 +548,6 @@ func makeGeneratedClaim(podClaimName, generateName, namespace, classname string,
 		},
 		Spec: resourceapi.ResourceClaimSpec{
 			ResourceClassName: classname,
-			AllocationMode:    resourceapi.AllocationModeWaitForFirstConsumer,
 		},
 	}
 	if owner != nil {
@@ -709,10 +649,6 @@ func normalizeClaims(claims []resourceapi.ResourceClaim) []resourceapi.ResourceC
 		if len(claims[i].Status.ReservedFor) == 0 {
 			claims[i].Status.ReservedFor = nil
 		}
-		if claims[i].Spec.AllocationMode == "" {
-			// This emulates defaulting.
-			claims[i].Spec.AllocationMode = resourceapi.AllocationModeWaitForFirstConsumer
-		}
 	}
 	return claims
 }

pkg/generated/openapi/zz_generated.openapi.go

@@ -46572,13 +46572,6 @@ func schema_k8sio_api_resource_v1alpha3_ResourceClaimSpec(ref common.ReferenceCa
 							Ref:         ref("k8s.io/api/resource/v1alpha3.ResourceClaimParametersReference"),
 						},
 					},
-					"allocationMode": {
-						SchemaProps: spec.SchemaProps{
-							Description: "Allocation can start immediately or when a Pod wants to use the resource. \"WaitForFirstConsumer\" is the default.",
-							Type:        []string{"string"},
-							Format:      "",
-						},
-					},
 				},
 				Required: []string{"resourceClassName"},
 			},

pkg/printers/internalversion/printers.go

@@ -634,7 +634,6 @@ func AddHandlers(h printers.PrintHandler) {
 	resourceClaimColumnDefinitions := []metav1.TableColumnDefinition{
 		{Name: "Name", Type: "string", Format: "name", Description: metav1.ObjectMeta{}.SwaggerDoc()["name"]},
 		{Name: "ResourceClassName", Type: "string", Description: resourceapi.ResourceClaimSpec{}.SwaggerDoc()["resourceClassName"]},
-		{Name: "AllocationMode", Type: "string", Description: resourceapi.ResourceClaimSpec{}.SwaggerDoc()["allocationMode"]},
 		{Name: "State", Type: "string", Description: "A summary of the current state (allocated, pending, reserved, etc.)."},
 		{Name: "Age", Type: "string", Description: metav1.ObjectMeta{}.SwaggerDoc()["creationTimestamp"]},
 	}
@@ -644,7 +643,6 @@ func AddHandlers(h printers.PrintHandler) {
 	resourceClaimTemplateColumnDefinitions := []metav1.TableColumnDefinition{
 		{Name: "Name", Type: "string", Format: "name", Description: metav1.ObjectMeta{}.SwaggerDoc()["name"]},
 		{Name: "ResourceClassName", Type: "string", Description: resourceapi.ResourceClaimSpec{}.SwaggerDoc()["resourceClassName"]},
-		{Name: "AllocationMode", Type: "string", Description: resourceapi.ResourceClaimSpec{}.SwaggerDoc()["allocationMode"]},
 		{Name: "Age", Type: "string", Description: metav1.ObjectMeta{}.SwaggerDoc()["creationTimestamp"]},
 	}
 	_ = h.TableHandler(resourceClaimTemplateColumnDefinitions, printResourceClaimTemplate)
@@ -3006,7 +3004,7 @@ func printResourceClaim(obj *resource.ResourceClaim, options printers.GenerateOp
 	row := metav1.TableRow{
 		Object: runtime.RawExtension{Object: obj},
 	}
-	row.Cells = append(row.Cells, obj.Name, obj.Spec.ResourceClassName, string(obj.Spec.AllocationMode), resourceClaimState(obj), translateTimestampSince(obj.CreationTimestamp))
+	row.Cells = append(row.Cells, obj.Name, obj.Spec.ResourceClassName, resourceClaimState(obj), translateTimestampSince(obj.CreationTimestamp))
 
 	return []metav1.TableRow{row}, nil
 }
@@ -3047,7 +3045,7 @@ func printResourceClaimTemplate(obj *resource.ResourceClaimTemplate, options pri
 	row := metav1.TableRow{
 		Object: runtime.RawExtension{Object: obj},
 	}
-	row.Cells = append(row.Cells, obj.Name, obj.Spec.Spec.ResourceClassName, string(obj.Spec.Spec.AllocationMode), translateTimestampSince(obj.CreationTimestamp))
+	row.Cells = append(row.Cells, obj.Name, obj.Spec.Spec.ResourceClassName, translateTimestampSince(obj.CreationTimestamp))
 
 	return []metav1.TableRow{row}, nil
 }

pkg/registry/resource/resourceclaim/storage/storage_test.go

@@ -58,7 +58,6 @@ func validNewClaim(name, ns string) *resource.ResourceClaim {
 		},
 		Spec: resource.ResourceClaimSpec{
 			ResourceClassName: "example",
-			AllocationMode:    resource.AllocationModeImmediate,
 		},
 		Status: resource.ResourceClaimStatus{},
 	}

pkg/registry/resource/resourceclaim/strategy_test.go

@@ -31,7 +31,6 @@ var resourceClaim = &resource.ResourceClaim{
 	},
 	Spec: resource.ResourceClaimSpec{
 		ResourceClassName: "valid-class",
-		AllocationMode:    resource.AllocationModeImmediate,
 	},
 }
 

pkg/registry/resource/resourceclaimtemplate/storage/storage_test.go

@@ -55,7 +55,6 @@ func validNewClaimTemplate(name string) *resource.ResourceClaimTemplate {
 		Spec: resource.ResourceClaimTemplateSpec{
 			Spec: resource.ResourceClaimSpec{
 				ResourceClassName: "valid-class",
-				AllocationMode:    resource.AllocationModeImmediate,
 			},
 		},
 	}

pkg/registry/resource/resourceclaimtemplate/strategy_test.go

@@ -32,7 +32,6 @@ var resourceClaimTemplate = &resource.ResourceClaimTemplate{
 	Spec: resource.ResourceClaimTemplateSpec{
 		Spec: resource.ResourceClaimSpec{
 			ResourceClassName: "valid-class",
-			AllocationMode:    resource.AllocationModeImmediate,
 		},
 	},
 }

pkg/scheduler/framework/plugins/dynamicresources/dynamicresources.go

@@ -713,8 +713,7 @@ func (pl *dynamicResources) isSchedulableAfterPodSchedulingContextChange(logger
 	// we allow backoff.
 	pendingDelayedClaims := 0
 	if err := pl.foreachPodResourceClaim(pod, func(podResourceName string, claim *resourceapi.ResourceClaim) {
-		if claim.Spec.AllocationMode == resourceapi.AllocationModeWaitForFirstConsumer &&
-			claim.Status.Allocation == nil &&
+		if claim.Status.Allocation == nil &&
 			!podSchedulingHasClaimInfo(podScheduling, podResourceName) {
 			pendingDelayedClaims++
 		}
@@ -970,9 +969,6 @@ func (pl *dynamicResources) PreFilter(ctx context.Context, state *framework.Cycl
 				}
 				s.informationsForClaim[index].controller = controller
 				needResourceInformation = true
-			} else if claim.Spec.AllocationMode == resourceapi.AllocationModeImmediate {
-				// This will get resolved by the resource driver.
-				return nil, statusUnschedulable(logger, "unallocated immediate resourceclaim", "pod", klog.KObj(pod), "resourceclaim", klog.KObj(claim))
 			}
 		}
 	}
@@ -1161,74 +1157,63 @@ func (pl *dynamicResources) Filter(ctx context.Context, cs *framework.CycleState
 	var unavailableClaims []int
 	for index, claim := range state.claims {
 		logger.V(10).Info("filtering based on resource claims of the pod", "pod", klog.KObj(pod), "node", klog.KObj(node), "resourceclaim", klog.KObj(claim))
-		switch {
-		case claim.Status.Allocation != nil:
+
+		if claim.Status.Allocation != nil {
 			if nodeSelector := state.informationsForClaim[index].availableOnNode; nodeSelector != nil {
 				if !nodeSelector.Match(node) {
 					logger.V(5).Info("AvailableOnNodes does not match", "pod", klog.KObj(pod), "node", klog.KObj(node), "resourceclaim", klog.KObj(claim))
 					unavailableClaims = append(unavailableClaims, index)
 				}
 			}
-		case claim.Status.DeallocationRequested:
+			continue
+		}
+
+		if claim.Status.DeallocationRequested {
 			// We shouldn't get here. PreFilter already checked this.
 			return statusUnschedulable(logger, "resourceclaim must be reallocated", "pod", klog.KObj(pod), "node", klog.KObj(node), "resourceclaim", klog.KObj(claim))
-		case claim.Spec.AllocationMode == resourceapi.AllocationModeWaitForFirstConsumer ||
-			state.informationsForClaim[index].structuredParameters:
-			if selector := state.informationsForClaim[index].availableOnNode; selector != nil {
-				if matches := selector.Match(node); !matches {
-					return statusUnschedulable(logger, "excluded by resource class node filter", "pod", klog.KObj(pod), "node", klog.KObj(node), "resourceclassName", claim.Spec.ResourceClassName)
-				}
+		}
+
+		if selector := state.informationsForClaim[index].availableOnNode; selector != nil {
+			if matches := selector.Match(node); !matches {
+				return statusUnschedulable(logger, "excluded by resource class node filter", "pod", klog.KObj(pod), "node", klog.KObj(node), "resourceclassName", claim.Spec.ResourceClassName)
 			}
-			// Can the builtin controller tell us whether the node is suitable?
-			if state.informationsForClaim[index].structuredParameters {
-				suitable, err := state.informationsForClaim[index].controller.nodeIsSuitable(ctx, node.Name, state.resources)
-				if err != nil {
-					// An error indicates that something wasn't configured correctly, for example
-					// writing a CEL expression which doesn't handle a map lookup error. Normally
-					// this should never fail. We could return an error here, but then the pod
-					// would get retried. Instead we ignore the node.
-					return statusUnschedulable(logger, fmt.Sprintf("checking structured parameters failed: %v", err), "pod", klog.KObj(pod), "node", klog.KObj(node), "resourceclaim", klog.KObj(claim))
-				}
-				if !suitable {
-					return statusUnschedulable(logger, "resourceclaim cannot be allocated for the node (unsuitable)", "pod", klog.KObj(pod), "node", klog.KObj(node), "resourceclaim", klog.KObj(claim))
-				}
-			} else {
-				if status := state.informationsForClaim[index].status; status != nil {
-					for _, unsuitableNode := range status.UnsuitableNodes {
-						if node.Name == unsuitableNode {
-							return statusUnschedulable(logger, "resourceclaim cannot be allocated for the node (unsuitable)", "pod", klog.KObj(pod), "node", klog.KObj(node), "resourceclaim", klog.KObj(claim), "unsuitablenodes", status.UnsuitableNodes)
-						}
+		}
+		// Can the builtin controller tell us whether the node is suitable?
+		if state.informationsForClaim[index].structuredParameters {
+			suitable, err := state.informationsForClaim[index].controller.nodeIsSuitable(ctx, node.Name, state.resources)
+			if err != nil {
+				// An error indicates that something wasn't configured correctly, for example
+				// writing a CEL expression which doesn't handle a map lookup error. Normally
+				// this should never fail. We could return an error here, but then the pod
+				// would get retried. Instead we ignore the node.
+				return statusUnschedulable(logger, fmt.Sprintf("checking structured parameters failed: %v", err), "pod", klog.KObj(pod), "node", klog.KObj(node), "resourceclaim", klog.KObj(claim))
+			}
+			if !suitable {
+				return statusUnschedulable(logger, "resourceclaim cannot be allocated for the node (unsuitable)", "pod", klog.KObj(pod), "node", klog.KObj(node), "resourceclaim", klog.KObj(claim))
+			}
+		} else {
+			if status := state.informationsForClaim[index].status; status != nil {
+				for _, unsuitableNode := range status.UnsuitableNodes {
+					if node.Name == unsuitableNode {
+						return statusUnschedulable(logger, "resourceclaim cannot be allocated for the node (unsuitable)", "pod", klog.KObj(pod), "node", klog.KObj(node), "resourceclaim", klog.KObj(claim), "unsuitablenodes", status.UnsuitableNodes)
 					}
 				}
 			}
-		default:
-			// This claim should have been handled above.
-			// Immediate allocation with control plane controller
-			// was already checked for in PreFilter.
-			return statusError(logger, fmt.Errorf("internal error, unexpected allocation mode %v", claim.Spec.AllocationMode))
 		}
 	}
 
 	if len(unavailableClaims) > 0 {
+		// Remember all unavailable claims. This might be observed
+		// concurrently, so we have to lock the state before writing.
 		state.mutex.Lock()
 		defer state.mutex.Unlock()
+
 		if state.unavailableClaims == nil {
 			state.unavailableClaims = sets.New[int]()
 		}
 
 		for _, index := range unavailableClaims {
-			claim := state.claims[index]
-			// Deallocation makes more sense for claims with
-			// delayed allocation. Claims with immediate allocation
-			// would just get allocated again for a random node,
-			// which is unlikely to help the pod.
-			//
-			// Claims with builtin controller are handled like
-			// claims with delayed allocation.
-			if claim.Spec.AllocationMode == resourceapi.AllocationModeWaitForFirstConsumer ||
-				state.informationsForClaim[index].controller != nil {
-				state.unavailableClaims.Insert(index)
-			}
+			state.unavailableClaims.Insert(index)
 		}
 		return statusUnschedulable(logger, "resourceclaim not available on the node", "pod", klog.KObj(pod))
 	}

pkg/scheduler/framework/plugins/dynamicresources/dynamicresources_test.go

@@ -165,53 +165,39 @@ var (
 		Namespace(namespace).
 		ResourceClassName(className).
 		Obj()
-	pendingImmediateClaim = st.FromResourceClaim(claim).
-				AllocationMode(resourceapi.AllocationModeImmediate).
-				Obj()
-	structuredAllocatedImmediateClaim = st.FromResourceClaim(pendingImmediateClaim).
-						Allocation("some-driver", &resourceapi.AllocationResult{}).
-						Structured("worker", "instance-1").
-						Obj()
-	pendingDelayedClaim = st.FromResourceClaim(claim).
-				OwnerReference(podName, podUID, podKind).
-				AllocationMode(resourceapi.AllocationModeWaitForFirstConsumer).
-				Obj()
-	pendingDelayedClaim2 = st.FromResourceClaim(pendingDelayedClaim).
-				Name(claimName2).
-				Obj()
-	deallocatingClaim = st.FromResourceClaim(pendingImmediateClaim).
+	pendingClaim = st.FromResourceClaim(claim).
+			OwnerReference(podName, podUID, podKind).
+			Obj()
+	pendingClaim2 = st.FromResourceClaim(pendingClaim).
+			Name(claimName2).
+			Obj()
+	deallocatingClaim = st.FromResourceClaim(pendingClaim).
 				Allocation("some-driver", &resourceapi.AllocationResult{}).
 				DeallocationRequested(true).
 				Obj()
-	inUseClaim = st.FromResourceClaim(pendingImmediateClaim).
+	inUseClaim = st.FromResourceClaim(pendingClaim).
 			Allocation("some-driver", &resourceapi.AllocationResult{}).
 			ReservedForPod(podName, types.UID(podUID)).
 			Obj()
 	structuredInUseClaim = st.FromResourceClaim(inUseClaim).
 				Structured("worker", "instance-1").
 				Obj()
-	allocatedClaim = st.FromResourceClaim(pendingDelayedClaim).
+	allocatedClaim = st.FromResourceClaim(pendingClaim).
 			Allocation("some-driver", &resourceapi.AllocationResult{}).
 			Obj()
 
-	pendingDelayedClaimWithParams      = st.FromResourceClaim(pendingDelayedClaim).ParametersRef(claimName).Obj()
+	pendingClaimWithParams             = st.FromResourceClaim(pendingClaim).ParametersRef(claimName).Obj()
 	structuredAllocatedClaim           = st.FromResourceClaim(allocatedClaim).Structured("worker", "instance-1").Obj()
 	structuredAllocatedClaimWithParams = st.FromResourceClaim(structuredAllocatedClaim).ParametersRef(claimName).Obj()
 
 	otherStructuredAllocatedClaim = st.FromResourceClaim(structuredAllocatedClaim).Name(structuredAllocatedClaim.Name + "-other").Obj()
 
-	allocatedDelayedClaimWithWrongTopology = st.FromResourceClaim(allocatedClaim).
-						Allocation("some-driver", &resourceapi.AllocationResult{AvailableOnNodes: st.MakeNodeSelector().In("no-such-label", []string{"no-such-value"}).Obj()}).
-						Obj()
-	structuredAllocatedDelayedClaimWithWrongTopology = st.FromResourceClaim(allocatedDelayedClaimWithWrongTopology).
-								Structured("worker-2", "instance-1").
-								Obj()
-	allocatedImmediateClaimWithWrongTopology = st.FromResourceClaim(allocatedDelayedClaimWithWrongTopology).
-							AllocationMode(resourceapi.AllocationModeImmediate).
+	allocatedClaimWithWrongTopology = st.FromResourceClaim(allocatedClaim).
+					Allocation("some-driver", &resourceapi.AllocationResult{AvailableOnNodes: st.MakeNodeSelector().In("no-such-label", []string{"no-such-value"}).Obj()}).
+					Obj()
+	structuredAllocatedClaimWithWrongTopology = st.FromResourceClaim(allocatedClaimWithWrongTopology).
+							Structured("worker-2", "instance-1").
 							Obj()
-	structuredAllocatedImmediateClaimWithWrongTopology = st.FromResourceClaim(allocatedImmediateClaimWithWrongTopology).
-								Structured("worker-2", "instance-1").
-								Obj()
 	allocatedClaimWithGoodTopology = st.FromResourceClaim(allocatedClaim).
 					Allocation("some-driver", &resourceapi.AllocationResult{AvailableOnNodes: st.MakeNodeSelector().In("kubernetes.io/hostname", []string{"worker"}).Obj()}).
 					Obj()
@@ -483,22 +469,9 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"waiting-for-immediate-allocation": {
+		"structured-no-resources": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingImmediateClaim},
-			classes: []*resourceapi.ResourceClass{resourceClass},
-			want: want{
-				prefilter: result{
-					status: framework.NewStatus(framework.UnschedulableAndUnresolvable, `unallocated immediate resourceclaim`),
-				},
-				postfilter: result{
-					status: framework.NewStatus(framework.Unschedulable, `no new claims to deallocate`),
-				},
-			},
-		},
-		"immediate-allocation-structured-no-resources": {
-			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingImmediateClaim},
+			claims:  []*resourceapi.ResourceClaim{pendingClaim},
 			classes: []*resourceapi.ResourceClass{structuredResourceClass},
 			want: want{
 				filter: perNodeResult{
@@ -511,51 +484,9 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"immediate-allocation-structured-with-resources": {
+		"structured-with-resources": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingImmediateClaim},
-			classes: []*resourceapi.ResourceClass{structuredResourceClass},
-			objs:    []apiruntime.Object{workerNodeSlice},
-			want: want{
-				reserve: result{
-					inFlightClaim: structuredAllocatedImmediateClaim,
-				},
-				prebind: result{
-					assumedClaim: reserve(structuredAllocatedImmediateClaim, podWithClaimName),
-					changes: change{
-						claim: func(claim *resourceapi.ResourceClaim) *resourceapi.ResourceClaim {
-							if claim.Name == claimName {
-								claim = claim.DeepCopy()
-								claim.Finalizers = structuredAllocatedImmediateClaim.Finalizers
-								claim.Status = structuredInUseClaim.Status
-							}
-							return claim
-						},
-					},
-				},
-				postbind: result{
-					assumedClaim: reserve(structuredAllocatedImmediateClaim, podWithClaimName),
-				},
-			},
-		},
-		"delayed-allocation-structured-no-resources": {
-			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaim},
-			classes: []*resourceapi.ResourceClass{structuredResourceClass},
-			want: want{
-				filter: perNodeResult{
-					workerNode.Name: {
-						status: framework.NewStatus(framework.UnschedulableAndUnresolvable, `resourceclaim cannot be allocated for the node (unsuitable)`),
-					},
-				},
-				postfilter: result{
-					status: framework.NewStatus(framework.Unschedulable, `still not schedulable`),
-				},
-			},
-		},
-		"delayed-allocation-structured-with-resources": {
-			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims:  []*resourceapi.ResourceClaim{pendingClaim},
 			classes: []*resourceapi.ResourceClass{structuredResourceClass},
 			objs:    []apiruntime.Object{workerNodeSlice},
 			want: want{
@@ -580,12 +511,12 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"delayed-allocation-structured-with-resources-has-finalizer": {
+		"structured-with-resources-has-finalizer": {
 			// As before. but the finalizer is already set. Could happen if
 			// the scheduler got interrupted.
 			pod: podWithClaimName,
 			claims: func() []*resourceapi.ResourceClaim {
-				claim := pendingDelayedClaim.DeepCopy()
+				claim := pendingClaim.DeepCopy()
 				claim.Finalizers = structuredAllocatedClaim.Finalizers
 				return []*resourceapi.ResourceClaim{claim}
 			}(),
@@ -612,12 +543,12 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"delayed-allocation-structured-with-resources-finalizer-gets-removed": {
+		"structured-with-resources-finalizer-gets-removed": {
 			// As before. but the finalizer is already set. Then it gets
 			// removed before the scheduler reaches PreBind.
 			pod: podWithClaimName,
 			claims: func() []*resourceapi.ResourceClaim {
-				claim := pendingDelayedClaim.DeepCopy()
+				claim := pendingClaim.DeepCopy()
 				claim.Finalizers = structuredAllocatedClaim.Finalizers
 				return []*resourceapi.ResourceClaim{claim}
 			}(),
@@ -653,11 +584,11 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"delayed-allocation-structured-with-resources-finalizer-gets-added": {
+		"structured-with-resources-finalizer-gets-added": {
 			// No finalizer initially, then it gets added before
 			// the scheduler reaches PreBind. Shouldn't happen?
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims:  []*resourceapi.ResourceClaim{pendingClaim},
 			classes: []*resourceapi.ResourceClass{structuredResourceClass},
 			objs:    []apiruntime.Object{workerNodeSlice},
 			prepare: prepare{
@@ -689,9 +620,9 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"delayed-allocation-structured-skip-bind": {
+		"structured-skip-bind": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims:  []*resourceapi.ResourceClaim{pendingClaim},
 			classes: []*resourceapi.ResourceClass{structuredResourceClass},
 			objs:    []apiruntime.Object{workerNodeSlice},
 			want: want{
@@ -701,9 +632,9 @@ func TestPlugin(t *testing.T) {
 				unreserveBeforePreBind: &result{},
 			},
 		},
-		"delayed-allocation-structured-exhausted-resources": {
+		"structured-exhausted-resources": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaim, otherStructuredAllocatedClaim},
+			claims:  []*resourceapi.ResourceClaim{pendingClaim, otherStructuredAllocatedClaim},
 			classes: []*resourceapi.ResourceClass{structuredResourceClass},
 			objs:    []apiruntime.Object{workerNodeSlice},
 			want: want{
@@ -720,7 +651,7 @@ func TestPlugin(t *testing.T) {
 
 		"with-parameters": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaimWithParams},
+			claims:  []*resourceapi.ResourceClaim{pendingClaimWithParams},
 			classes: []*resourceapi.ResourceClass{structuredResourceClassWithParams},
 			objs:    []apiruntime.Object{claimParameters, classParameters, workerNodeSlice},
 			want: want{
@@ -748,7 +679,7 @@ func TestPlugin(t *testing.T) {
 
 		"with-translated-parameters": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{claimWithCRD(pendingDelayedClaimWithParams)},
+			claims:  []*resourceapi.ResourceClaim{claimWithCRD(pendingClaimWithParams)},
 			classes: []*resourceapi.ResourceClass{classWithCRD(structuredResourceClassWithCRD)},
 			objs:    []apiruntime.Object{claimParameters, claimParametersOtherNamespace /* must be ignored */, classParameters, workerNodeSlice},
 			want: want{
@@ -776,7 +707,7 @@ func TestPlugin(t *testing.T) {
 
 		"missing-class-parameters": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaimWithParams},
+			claims:  []*resourceapi.ResourceClaim{pendingClaimWithParams},
 			classes: []*resourceapi.ResourceClass{structuredResourceClassWithParams},
 			objs:    []apiruntime.Object{claimParameters, workerNodeSlice},
 			want: want{
@@ -791,7 +722,7 @@ func TestPlugin(t *testing.T) {
 
 		"missing-claim-parameters": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaimWithParams},
+			claims:  []*resourceapi.ResourceClaim{pendingClaimWithParams},
 			classes: []*resourceapi.ResourceClass{structuredResourceClassWithParams},
 			objs:    []apiruntime.Object{classParameters, workerNodeSlice},
 			want: want{
@@ -806,7 +737,7 @@ func TestPlugin(t *testing.T) {
 
 		"missing-translated-class-parameters": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{claimWithCRD(pendingDelayedClaimWithParams)},
+			claims:  []*resourceapi.ResourceClaim{claimWithCRD(pendingClaimWithParams)},
 			classes: []*resourceapi.ResourceClass{classWithCRD(structuredResourceClassWithCRD)},
 			objs:    []apiruntime.Object{claimParameters, workerNodeSlice},
 			want: want{
@@ -821,7 +752,7 @@ func TestPlugin(t *testing.T) {
 
 		"missing-translated-claim-parameters": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{claimWithCRD(pendingDelayedClaimWithParams)},
+			claims:  []*resourceapi.ResourceClaim{claimWithCRD(pendingClaimWithParams)},
 			classes: []*resourceapi.ResourceClass{classWithCRD(structuredResourceClassWithCRD)},
 			objs:    []apiruntime.Object{classParameters, workerNodeSlice},
 			want: want{
@@ -836,7 +767,7 @@ func TestPlugin(t *testing.T) {
 
 		"too-many-translated-class-parameters": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{claimWithCRD(pendingDelayedClaimWithParams)},
+			claims:  []*resourceapi.ResourceClaim{claimWithCRD(pendingClaimWithParams)},
 			classes: []*resourceapi.ResourceClass{classWithCRD(structuredResourceClassWithCRD)},
 			objs:    []apiruntime.Object{claimParameters, classParameters, st.FromClassParameters(classParameters).Name("other").Obj() /* too many */, workerNodeSlice},
 			want: want{
@@ -851,7 +782,7 @@ func TestPlugin(t *testing.T) {
 
 		"too-many-translated-claim-parameters": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{claimWithCRD(pendingDelayedClaimWithParams)},
+			claims:  []*resourceapi.ResourceClaim{claimWithCRD(pendingClaimWithParams)},
 			classes: []*resourceapi.ResourceClass{classWithCRD(structuredResourceClassWithCRD)},
 			objs:    []apiruntime.Object{claimParameters, st.FromClaimParameters(claimParameters).Name("other").Obj() /* too many */, classParameters, workerNodeSlice},
 			want: want{
@@ -866,7 +797,7 @@ func TestPlugin(t *testing.T) {
 
 		"claim-parameters-CEL-runtime-error": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaimWithParams},
+			claims:  []*resourceapi.ResourceClaim{pendingClaimWithParams},
 			classes: []*resourceapi.ResourceClass{structuredResourceClassWithParams},
 			objs:    []apiruntime.Object{breakCELInClaimParameters(claimParameters), classParameters, workerNodeSlice},
 			want: want{
@@ -883,7 +814,7 @@ func TestPlugin(t *testing.T) {
 
 		"class-parameters-CEL-runtime-error": {
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaimWithParams},
+			claims:  []*resourceapi.ResourceClaim{pendingClaimWithParams},
 			classes: []*resourceapi.ResourceClass{structuredResourceClassWithParams},
 			objs:    []apiruntime.Object{claimParameters, breakCELInClassParameters(classParameters), workerNodeSlice},
 			want: want{
@@ -910,9 +841,9 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"delayed-allocation-missing-class": {
+		"missing-class": {
 			pod:    podWithClaimName,
-			claims: []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims: []*resourceapi.ResourceClaim{pendingClaim},
 			want: want{
 				prefilter: result{
 					status: framework.NewStatus(framework.UnschedulableAndUnresolvable, fmt.Sprintf("resource class %s does not exist", className)),
@@ -922,11 +853,11 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"delayed-allocation-scheduling-select-immediately": {
+		"scheduling-select-immediately": {
 			// Create the PodSchedulingContext object, ask for information
 			// and select a node.
 			pod:     podWithClaimName,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims:  []*resourceapi.ResourceClaim{pendingClaim},
 			classes: []*resourceapi.ResourceClass{resourceClass},
 			want: want{
 				prebind: result{
@@ -935,12 +866,12 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"delayed-allocation-scheduling-ask": {
+		"scheduling-ask": {
 			// Create the PodSchedulingContext object, ask for
 			// information, but do not select a node because
 			// there are multiple claims.
 			pod:     podWithTwoClaimNames,
-			claims:  []*resourceapi.ResourceClaim{pendingDelayedClaim, pendingDelayedClaim2},
+			claims:  []*resourceapi.ResourceClaim{pendingClaim, pendingClaim2},
 			classes: []*resourceapi.ResourceClass{resourceClass},
 			want: want{
 				prebind: result{
@@ -949,11 +880,11 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"delayed-allocation-scheduling-finish": {
+		"scheduling-finish": {
 			// Use the populated PodSchedulingContext object to select a
 			// node.
 			pod:         podWithClaimName,
-			claims:      []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims:      []*resourceapi.ResourceClaim{pendingClaim},
 			schedulings: []*resourceapi.PodSchedulingContext{schedulingInfo},
 			classes:     []*resourceapi.ResourceClass{resourceClass},
 			want: want{
@@ -969,11 +900,11 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"delayed-allocation-scheduling-finish-concurrent-label-update": {
+		"scheduling-finish-concurrent-label-update": {
 			// Use the populated PodSchedulingContext object to select a
 			// node.
 			pod:         podWithClaimName,
-			claims:      []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims:      []*resourceapi.ResourceClaim{pendingClaim},
 			schedulings: []*resourceapi.PodSchedulingContext{schedulingInfo},
 			classes:     []*resourceapi.ResourceClass{resourceClass},
 			prepare: prepare{
@@ -994,7 +925,7 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"delayed-allocation-scheduling-completed": {
+		"scheduling-completed": {
 			// Remove PodSchedulingContext object once the pod is scheduled.
 			pod:         podWithClaimName,
 			claims:      []*resourceapi.ResourceClaim{allocatedClaim},
@@ -1031,11 +962,11 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"wrong-topology-delayed-allocation": {
+		"wrong-topology": {
 			// PostFilter tries to get the pod scheduleable by
 			// deallocating the claim.
 			pod:    podWithClaimName,
-			claims: []*resourceapi.ResourceClaim{allocatedDelayedClaimWithWrongTopology},
+			claims: []*resourceapi.ResourceClaim{allocatedClaimWithWrongTopology},
 			want: want{
 				filter: perNodeResult{
 					workerNode.Name: {
@@ -1055,29 +986,11 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"wrong-topology-immediate-allocation": {
+		"wrong-topology-structured": {
 			// PostFilter tries to get the pod scheduleable by
 			// deallocating the claim.
 			pod:    podWithClaimName,
-			claims: []*resourceapi.ResourceClaim{allocatedImmediateClaimWithWrongTopology},
-			want: want{
-				filter: perNodeResult{
-					workerNode.Name: {
-						status: framework.NewStatus(framework.UnschedulableAndUnresolvable, `resourceclaim not available on the node`),
-					},
-				},
-				postfilter: result{
-					// Claims with immediate allocation don't. They would just get allocated again right
-					// away, without considering the needs of the pod.
-					status: framework.NewStatus(framework.Unschedulable, `still not schedulable`),
-				},
-			},
-		},
-		"wrong-topology-delayed-allocation-structured": {
-			// PostFilter tries to get the pod scheduleable by
-			// deallocating the claim.
-			pod:    podWithClaimName,
-			claims: []*resourceapi.ResourceClaim{structuredAllocatedDelayedClaimWithWrongTopology},
+			claims: []*resourceapi.ResourceClaim{structuredAllocatedClaimWithWrongTopology},
 			want: want{
 				filter: perNodeResult{
 					workerNode.Name: {
@@ -1097,25 +1010,6 @@ func TestPlugin(t *testing.T) {
 				},
 			},
 		},
-		"wrong-topology-immediate-allocation-structured": {
-			// PostFilter tries to get the pod scheduleable by
-			// deallocating the claim.
-			pod:    podWithClaimName,
-			claims: []*resourceapi.ResourceClaim{structuredAllocatedImmediateClaimWithWrongTopology},
-			want: want{
-				filter: perNodeResult{
-					workerNode.Name: {
-						status: framework.NewStatus(framework.UnschedulableAndUnresolvable, `resourceclaim not available on the node`),
-					},
-				},
-				postfilter: result{
-					// Claims with immediate allocation don't. The allocation is considered
-					// more important than the pod and pods need to wait for the node to
-					// become available again.
-					status: framework.NewStatus(framework.Unschedulable, `still not schedulable`),
-				},
-			},
-		},
 		"good-topology": {
 			pod:    podWithClaimName,
 			claims: []*resourceapi.ResourceClaim{allocatedClaimWithGoodTopology},
@@ -1665,22 +1559,22 @@ func Test_isSchedulableAfterClaimChange(t *testing.T) {
 		},
 		"queue-on-add": {
 			pod:          podWithClaimName,
-			newObj:       pendingImmediateClaim,
+			newObj:       pendingClaim,
 			expectedHint: framework.Queue,
 		},
 		"backoff-wrong-old-object": {
 			pod:         podWithClaimName,
-			claims:      []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims:      []*resourceapi.ResourceClaim{pendingClaim},
 			oldObj:      "not-a-claim",
-			newObj:      pendingImmediateClaim,
+			newObj:      pendingClaim,
 			expectedErr: true,
 		},
 		"skip-adding-finalizer": {
 			pod:    podWithClaimName,
-			claims: []*resourceapi.ResourceClaim{pendingImmediateClaim},
-			oldObj: pendingImmediateClaim,
+			claims: []*resourceapi.ResourceClaim{pendingClaim},
+			oldObj: pendingClaim,
 			newObj: func() *resourceapi.ResourceClaim {
-				claim := pendingImmediateClaim.DeepCopy()
+				claim := pendingClaim.DeepCopy()
 				claim.Finalizers = append(claim.Finalizers, "foo")
 				return claim
 			}(),
@@ -1688,10 +1582,10 @@ func Test_isSchedulableAfterClaimChange(t *testing.T) {
 		},
 		"queue-on-status-change": {
 			pod:    podWithClaimName,
-			claims: []*resourceapi.ResourceClaim{pendingImmediateClaim},
-			oldObj: pendingImmediateClaim,
+			claims: []*resourceapi.ResourceClaim{pendingClaim},
+			oldObj: pendingClaim,
 			newObj: func() *resourceapi.ResourceClaim {
-				claim := pendingImmediateClaim.DeepCopy()
+				claim := pendingClaim.DeepCopy()
 				claim.Status.Allocation = &resourceapi.AllocationResult{}
 				return claim
 			}(),
@@ -1699,7 +1593,7 @@ func Test_isSchedulableAfterClaimChange(t *testing.T) {
 		},
 		"structured-claim-deallocate": {
 			pod:    podWithClaimName,
-			claims: []*resourceapi.ResourceClaim{pendingDelayedClaim, otherStructuredAllocatedClaim},
+			claims: []*resourceapi.ResourceClaim{pendingClaim, otherStructuredAllocatedClaim},
 			oldObj: otherStructuredAllocatedClaim,
 			newObj: func() *resourceapi.ResourceClaim {
 				claim := otherStructuredAllocatedClaim.DeepCopy()
@@ -1804,7 +1698,7 @@ func Test_isSchedulableAfterPodSchedulingContextChange(t *testing.T) {
 		},
 		"skip-unrelated-object": {
 			pod:    podWithClaimTemplate,
-			claims: []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims: []*resourceapi.ResourceClaim{pendingClaim},
 			newObj: func() *resourceapi.PodSchedulingContext {
 				scheduling := scheduling.DeepCopy()
 				scheduling.Name += "-foo"
@@ -1826,21 +1720,21 @@ func Test_isSchedulableAfterPodSchedulingContextChange(t *testing.T) {
 		},
 		"skip-missing-infos": {
 			pod:          podWithClaimTemplateInStatus,
-			claims:       []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims:       []*resourceapi.ResourceClaim{pendingClaim},
 			oldObj:       scheduling,
 			newObj:       scheduling,
 			expectedHint: framework.QueueSkip,
 		},
 		"queue-new-infos": {
 			pod:          podWithClaimTemplateInStatus,
-			claims:       []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims:       []*resourceapi.ResourceClaim{pendingClaim},
 			oldObj:       scheduling,
 			newObj:       schedulingInfo,
 			expectedHint: framework.Queue,
 		},
 		"queue-bad-selected-node": {
 			pod:    podWithClaimTemplateInStatus,
-			claims: []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims: []*resourceapi.ResourceClaim{pendingClaim},
 			oldObj: func() *resourceapi.PodSchedulingContext {
 				scheduling := schedulingInfo.DeepCopy()
 				scheduling.Spec.SelectedNode = workerNode.Name
@@ -1856,7 +1750,7 @@ func Test_isSchedulableAfterPodSchedulingContextChange(t *testing.T) {
 		},
 		"skip-spec-changes": {
 			pod:    podWithClaimTemplateInStatus,
-			claims: []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims: []*resourceapi.ResourceClaim{pendingClaim},
 			oldObj: schedulingInfo,
 			newObj: func() *resourceapi.PodSchedulingContext {
 				scheduling := schedulingInfo.DeepCopy()
@@ -1867,7 +1761,7 @@ func Test_isSchedulableAfterPodSchedulingContextChange(t *testing.T) {
 		},
 		"backoff-other-changes": {
 			pod:    podWithClaimTemplateInStatus,
-			claims: []*resourceapi.ResourceClaim{pendingDelayedClaim},
+			claims: []*resourceapi.ResourceClaim{pendingClaim},
 			oldObj: schedulingInfo,
 			newObj: func() *resourceapi.PodSchedulingContext {
 				scheduling := schedulingInfo.DeepCopy()

pkg/scheduler/testing/wrappers.go

@@ -946,12 +946,6 @@ func (wrapper *ResourceClaimWrapper) OwnerReference(name, uid string, gvk schema
 	return wrapper
 }
 
-// AllocationMode sets the allocation mode of the inner object.
-func (wrapper *ResourceClaimWrapper) AllocationMode(a resourceapi.AllocationMode) *ResourceClaimWrapper {
-	wrapper.ResourceClaim.Spec.AllocationMode = a
-	return wrapper
-}
-
 // ParametersRef sets a reference to a ResourceClaimParameters.resource.k8s.io.
 func (wrapper *ResourceClaimWrapper) ParametersRef(name string) *ResourceClaimWrapper {
 	wrapper.ResourceClaim.Spec.ParametersRef = &resourceapi.ResourceClaimParametersReference{

staging/src/k8s.io/api/resource/v1alpha3/generated.pb.go

@@ -1331,148 +1331,146 @@ func init() {
 }
 
 var fileDescriptor_66649ee9bbcd89d2 = []byte{
-	// 2242 bytes of a gzipped FileDescriptorProto
+	// 2219 bytes of a gzipped FileDescriptorProto
 	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xd4, 0x1a, 0x4d, 0x6c, 0x1c, 0x57,
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-	0x7d, 0x4b, 0xdc, 0xa6, 0xfc, 0x75, 0xbc, 0xf3, 0x62, 0x0f, 0xd9, 0x9d, 0xd9, 0xcc, 0x7b, 0xeb,
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+	0xca, 0x82, 0xc4, 0xdd, 0x7e, 0x33, 0xd7, 0x63, 0x29, 0xf7, 0xfb, 0x35, 0xc1, 0x7e, 0x39, 0x6d,
+	0x17, 0xa5, 0x72, 0xd3, 0x7e, 0xa0, 0x40, 0x2a, 0xb8, 0xea, 0x64, 0xd8, 0xe6, 0x62, 0x3e, 0xdb,
+	0xf0, 0xb7, 0xdc, 0x71, 0x2c, 0xf3, 0xfb, 0xd8, 0xa8, 0x95, 0xbf, 0x6e, 0x3c, 0xf9, 0x5a, 0xbd,
+	0x01, 0x65, 0xdb, 0x31, 0x71, 0xac, 0x87, 0x0c, 0x93, 0xec, 0x0d, 0xb1, 0x8e, 0x42, 0x88, 0x44,
+	0x28, 0x16, 0xc7, 0x0a, 0xc5, 0x03, 0x98, 0x77, 0xe3, 0x3e, 0x2f, 0x5a, 0xbf, 0x31, 0xbb, 0x1c,
+	0x6e, 0xd7, 0x15, 0xc1, 0x43, 0x8e, 0x1e, 0x24, 0x13, 0x96, 0x7a, 0x37, 0xa6, 0xbf, 0xa7, 0xb6,
+	0x77, 0xe3, 0xef, 0xa2, 0xe9, 0xb5, 0xf1, 0xb7, 0x45, 0xa8, 0x66, 0x65, 0x19, 0xf5, 0x43, 0x05,
+	0x56, 0x78, 0x20, 0x25, 0xca, 0xe6, 0x64, 0xe1, 0x1a, 0xde, 0xb6, 0x77, 0xd3, 0x68, 0xa2, 0x74,
+	0x56, 0xb2, 0x10, 0xf1, 0x41, 0xc9, 0x64, 0xff, 0x53, 0x31, 0x2c, 0x84, 0x34, 0x7c, 0x49, 0x67,
+	0x25, 0x39, 0x6e, 0xe9, 0x48, 0xc7, 0xfd, 0x36, 0x4c, 0xbb, 0x6c, 0x20, 0xe2, 0xdf, 0x0b, 0xc6,
+	0x78, 0xa8, 0x4c, 0xff, 0x27, 0x9d, 0xa8, 0x57, 0xe3, 0xdf, 0x04, 0x05, 0x54, 0xb5, 0x5f, 0x2b,
+	0x30, 0x94, 0xf3, 0x26, 0xaa, 0x5c, 0x06, 0x40, 0xef, 0x7f, 0x54, 0x68, 0xc8, 0x22, 0xa6, 0xc5,
+	0x18, 0x51, 0x5d, 0x7f, 0xf8, 0xb8, 0x36, 0xf5, 0xe8, 0x71, 0x6d, 0xea, 0xd3, 0xc7, 0xb5, 0xa9,
+	0x07, 0x83, 0x9a, 0xf2, 0x70, 0x50, 0x53, 0x1e, 0x0d, 0x6a, 0xca, 0xa7, 0x83, 0x9a, 0xf2, 0x8f,
+	0x41, 0x4d, 0xf9, 0xe8, 0x9f, 0xb5, 0xa9, 0xf7, 0xd6, 0x46, 0xfd, 0x3b, 0xdf, 0x7f, 0x03, 0x00,
+	0x00, 0xff, 0xff, 0xf0, 0x19, 0xbb, 0x6c, 0xed, 0x27, 0x00, 0x00,
 }
 
 func (m *AllocationResult) Marshal() (dAtA []byte, err error) {
@@ -2539,11 +2537,6 @@ func (m *ResourceClaimSpec) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
-	i -= len(m.AllocationMode)
-	copy(dAtA[i:], m.AllocationMode)
-	i = encodeVarintGenerated(dAtA, i, uint64(len(m.AllocationMode)))
-	i--
-	dAtA[i] = 0x1a
 	if m.ParametersRef != nil {
 		{
 			size, err := m.ParametersRef.MarshalToSizedBuffer(dAtA[:i])
@@ -3886,8 +3879,6 @@ func (m *ResourceClaimSpec) Size() (n int) {
 		l = m.ParametersRef.Size()
 		n += 1 + l + sovGenerated(uint64(l))
 	}
-	l = len(m.AllocationMode)
-	n += 1 + l + sovGenerated(uint64(l))
 	return n
 }
 
@@ -4536,7 +4527,6 @@ func (this *ResourceClaimSpec) String() string {
 	s := strings.Join([]string{`&ResourceClaimSpec{`,
 		`ResourceClassName:` + fmt.Sprintf("%v", this.ResourceClassName) + `,`,
 		`ParametersRef:` + strings.Replace(this.ParametersRef.String(), "ResourceClaimParametersReference", "ResourceClaimParametersReference", 1) + `,`,
-		`AllocationMode:` + fmt.Sprintf("%v", this.AllocationMode) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -7889,38 +7879,6 @@ func (m *ResourceClaimSpec) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 3:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field AllocationMode", wireType)
-			}
-			var stringLen uint64
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowGenerated
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				stringLen |= uint64(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			intStringLen := int(stringLen)
-			if intStringLen < 0 {
-				return ErrInvalidLengthGenerated
-			}
-			postIndex := iNdEx + intStringLen
-			if postIndex < 0 {
-				return ErrInvalidLengthGenerated
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			m.AllocationMode = AllocationMode(dAtA[iNdEx:postIndex])
-			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipGenerated(dAtA[iNdEx:])

staging/src/k8s.io/api/resource/v1alpha3/generated.proto

@@ -411,11 +411,6 @@ message ResourceClaimSpec {
   // The object must be in the same namespace as the ResourceClaim.
   // +optional
   optional ResourceClaimParametersReference parametersRef = 2;
-
-  // Allocation can start immediately or when a Pod wants to use the
-  // resource. "WaitForFirstConsumer" is the default.
-  // +optional
-  optional string allocationMode = 3;
 }
 
 // ResourceClaimStatus tracks whether the resource has been allocated and what

staging/src/k8s.io/api/resource/v1alpha3/types.go

@@ -72,34 +72,8 @@ type ResourceClaimSpec struct {
 	// The object must be in the same namespace as the ResourceClaim.
 	// +optional
 	ParametersRef *ResourceClaimParametersReference `json:"parametersRef,omitempty" protobuf:"bytes,2,opt,name=parametersRef"`
-
-	// Allocation can start immediately or when a Pod wants to use the
-	// resource. "WaitForFirstConsumer" is the default.
-	// +optional
-	AllocationMode AllocationMode `json:"allocationMode,omitempty" protobuf:"bytes,3,opt,name=allocationMode"`
 }
 
-// AllocationMode describes whether a ResourceClaim gets allocated immediately
-// when it gets created (AllocationModeImmediate) or whether allocation is
-// delayed until it is needed for a Pod
-// (AllocationModeWaitForFirstConsumer). Other modes might get added in the
-// future.
-type AllocationMode string
-
-const (
-	// When a ResourceClaim has AllocationModeWaitForFirstConsumer, allocation is
-	// delayed until a Pod gets scheduled that needs the ResourceClaim. The
-	// scheduler will consider all resource requirements of that Pod and
-	// trigger allocation for a node that fits the Pod.
-	AllocationModeWaitForFirstConsumer AllocationMode = "WaitForFirstConsumer"
-
-	// When a ResourceClaim has AllocationModeImmediate, allocation starts
-	// as soon as the ResourceClaim gets created. This is done without
-	// considering the needs of Pods that will use the ResourceClaim
-	// because those Pods are not known yet.
-	AllocationModeImmediate AllocationMode = "Immediate"
-)
-
 // ResourceClaimStatus tracks whether the resource has been allocated and what
 // the resulting attributes are.
 type ResourceClaimStatus struct {

staging/src/k8s.io/api/resource/v1alpha3/types_swagger_doc_generated.go

@@ -187,7 +187,6 @@ var map_ResourceClaimSpec = map[string]string{
 	"":                  "ResourceClaimSpec defines how a resource is to be allocated.",
 	"resourceClassName": "ResourceClassName references the driver and additional parameters via the name of a ResourceClass that was created as part of the driver deployment.",
 	"parametersRef":     "ParametersRef references a separate object with arbitrary parameters that will be used by the driver when allocating a resource for the claim.\n\nThe object must be in the same namespace as the ResourceClaim.",
-	"allocationMode":    "Allocation can start immediately or when a Pod wants to use the resource. \"WaitForFirstConsumer\" is the default.",
 }
 
 func (ResourceClaimSpec) SwaggerDoc() map[string]string {

staging/src/k8s.io/api/testdata/HEAD/resource.k8s.io.v1alpha3.ResourceClaim.json

@@ -49,8 +49,7 @@
       "apiGroup": "apiGroupValue",
       "kind": "kindValue",
       "name": "nameValue"
-    },
-    "allocationMode": "allocationModeValue"
+    }
   },
   "status": {
     "driverName": "driverNameValue",

staging/src/k8s.io/api/testdata/HEAD/resource.k8s.io.v1alpha3.ResourceClaim.yaml

@@ -33,7 +33,6 @@ metadata:
   selfLink: selfLinkValue
   uid: uidValue
 spec:
-  allocationMode: allocationModeValue
   parametersRef:
     apiGroup: apiGroupValue
     kind: kindValue

staging/src/k8s.io/api/testdata/HEAD/resource.k8s.io.v1alpha3.ResourceClaimTemplate.json

@@ -92,8 +92,7 @@
         "apiGroup": "apiGroupValue",
         "kind": "kindValue",
         "name": "nameValue"
-      },
-      "allocationMode": "allocationModeValue"
+      }
     }
   }
 }

staging/src/k8s.io/api/testdata/HEAD/resource.k8s.io.v1alpha3.ResourceClaimTemplate.yaml

@@ -66,7 +66,6 @@ spec:
     selfLink: selfLinkValue
     uid: uidValue
   spec:
-    allocationMode: allocationModeValue
     parametersRef:
       apiGroup: apiGroupValue
       kind: kindValue

staging/src/k8s.io/client-go/applyconfigurations/internal/internal.go

@@ -12419,9 +12419,6 @@ var schemaYAML = typed.YAMLObject(`types:
 - name: io.k8s.api.resource.v1alpha3.ResourceClaimSpec
   map:
     fields:
-    - name: allocationMode
-      type:
-        scalar: string
     - name: parametersRef
       type:
         namedType: io.k8s.api.resource.v1alpha3.ResourceClaimParametersReference

staging/src/k8s.io/client-go/applyconfigurations/resource/v1alpha3/resourceclaimspec.go

@@ -18,16 +18,11 @@ limitations under the License.
 
 package v1alpha3
 
-import (
-	resourcev1alpha3 "k8s.io/api/resource/v1alpha3"
-)
-
 // ResourceClaimSpecApplyConfiguration represents a declarative configuration of the ResourceClaimSpec type for use
 // with apply.
 type ResourceClaimSpecApplyConfiguration struct {
 	ResourceClassName *string                                             `json:"resourceClassName,omitempty"`
 	ParametersRef     *ResourceClaimParametersReferenceApplyConfiguration `json:"parametersRef,omitempty"`
-	AllocationMode    *resourcev1alpha3.AllocationMode                    `json:"allocationMode,omitempty"`
 }
 
 // ResourceClaimSpecApplyConfiguration constructs a declarative configuration of the ResourceClaimSpec type for use with
@@ -51,11 +46,3 @@ func (b *ResourceClaimSpecApplyConfiguration) WithParametersRef(value *ResourceC
 	b.ParametersRef = value
 	return b
 }
-
-// WithAllocationMode sets the AllocationMode field in the declarative configuration to the given value
-// and returns the receiver, so that objects can be built by chaining "With" function invocations.
-// If called multiple times, the AllocationMode field is set to the value of the last call.
-func (b *ResourceClaimSpecApplyConfiguration) WithAllocationMode(value resourcev1alpha3.AllocationMode) *ResourceClaimSpecApplyConfiguration {
-	b.AllocationMode = &value
-	return b
-}

staging/src/k8s.io/dynamic-resource-allocation/controller/controller.go

@@ -515,48 +515,7 @@ func (ctrl *controller) syncClaim(ctx context.Context, claim *resourceapi.Resour
 		logger.V(5).Info("ResourceClaim is allocated")
 		return nil
 	}
-	if claim.Spec.AllocationMode != resourceapi.AllocationModeImmediate {
-		logger.V(5).Info("ResourceClaim waiting for first consumer")
-		return nil
-	}
-
-	// We need the ResourceClass to determine whether we should allocate it.
-	class, err := ctrl.rcLister.Get(claim.Spec.ResourceClassName)
-	if err != nil {
-		return err
-	}
-	if class.DriverName != ctrl.name {
-		// Not ours *at the moment*. This can change, so requeue and
-		// check again. We could trigger a faster check when the
-		// ResourceClass changes, but that shouldn't occur much in
-		// practice and thus isn't worth the effort.
-		//
-		// We use exponential backoff because it is unlikely that
-		// the ResourceClass changes much.
-		logger.V(5).Info("ResourceClaim is handled by other driver", "driver", class.DriverName)
-		return errRequeue
-	}
-
-	// Check parameters. Do not record event to Claim if its parameters are invalid,
-	// syncKey will record the error.
-	claimParameters, classParameters, err := ctrl.getParameters(ctx, claim, class, false)
-	if err != nil {
-		return err
-	}
-
-	claimAllocations := claimAllocations{&ClaimAllocation{
-		Claim:           claim,
-		ClaimParameters: claimParameters,
-		Class:           class,
-		ClassParameters: classParameters,
-	}}
-
-	ctrl.allocateClaims(ctx, claimAllocations, "", nil)
-
-	if claimAllocations[0].Error != nil {
-		return fmt.Errorf("allocate: %v", claimAllocations[0].Error)
-	}
-
+	logger.V(5).Info("ResourceClaim waiting for first consumer")
 	return nil
 }
 
@@ -678,10 +637,6 @@ func (ctrl *controller) checkPodClaim(ctx context.Context, pod *v1.Pod, podClaim
 			return nil, err
 		}
 	}
-	if claim.Spec.AllocationMode != resourceapi.AllocationModeWaitForFirstConsumer {
-		// Nothing to do for it as part of pod scheduling.
-		return nil, nil
-	}
 	if claim.Status.Allocation != nil {
 		// Already allocated, class and parameter are not needed and nothing
 		// need to be done for the claim either.

staging/src/k8s.io/dynamic-resource-allocation/controller/controller_test.go

@@ -53,8 +53,6 @@ func TestController(t *testing.T) {
 	}
 	claim := createClaim(claimName, claimNamespace, className)
 	otherClaim := createClaim(claimName, claimNamespace, otherClassName)
-	delayedClaim := claim.DeepCopy()
-	delayedClaim.Spec.AllocationMode = resourceapi.AllocationModeWaitForFirstConsumer
 	podName := "pod"
 	podKey := "schedulingCtx:default/pod"
 	pod := createPod(podName, claimNamespace, nil)
@@ -148,94 +146,6 @@ func TestController(t *testing.T) {
 			classes:       classes,
 			claim:         otherClaim,
 			expectedClaim: otherClaim,
-			expectedError: errRequeue.Error(), // class might change
-		},
-		// Immediate allocation:
-		// deletion time stamp set, our finalizer set, not allocated  -> remove finalizer
-		"immediate-deleted-finalizer-removal": {
-			key:           claimKey,
-			classes:       classes,
-			claim:         withFinalizer(withDeletionTimestamp(claim), ourFinalizer),
-			driver:        m.expectDeallocate(map[string]error{claimName: nil}),
-			expectedClaim: withDeletionTimestamp(claim),
-		},
-		// deletion time stamp set, our finalizer set, not allocated, stopping fails  -> requeue
-		"immediate-deleted-finalizer-stop-failure": {
-			key:           claimKey,
-			classes:       classes,
-			claim:         withFinalizer(withDeletionTimestamp(claim), ourFinalizer),
-			driver:        m.expectDeallocate(map[string]error{claimName: errors.New("fake error")}),
-			expectedClaim: withFinalizer(withDeletionTimestamp(claim), ourFinalizer),
-			expectedError: "stop allocation: fake error",
-		},
-		// deletion time stamp set, other finalizer set, not allocated  -> do nothing
-		"immediate-deleted-finalizer-no-removal": {
-			key:           claimKey,
-			classes:       classes,
-			claim:         withFinalizer(withDeletionTimestamp(claim), otherFinalizer),
-			expectedClaim: withFinalizer(withDeletionTimestamp(claim), otherFinalizer),
-		},
-		// deletion time stamp set, finalizer set, allocated  -> deallocate
-		"immediate-deleted-allocated": {
-			key:           claimKey,
-			classes:       classes,
-			claim:         withAllocate(withDeletionTimestamp(claim)),
-			driver:        m.expectDeallocate(map[string]error{claimName: nil}),
-			expectedClaim: withDeletionTimestamp(claim),
-		},
-		// deletion time stamp set, finalizer set, allocated, deallocation fails  -> requeue
-		"immediate-deleted-deallocate-failure": {
-			key:           claimKey,
-			classes:       classes,
-			claim:         withAllocate(withDeletionTimestamp(claim)),
-			driver:        m.expectDeallocate(map[string]error{claimName: errors.New("fake error")}),
-			expectedClaim: withAllocate(withDeletionTimestamp(claim)),
-			expectedError: "deallocate: fake error",
-		},
-		// deletion time stamp set, finalizer not set -> do nothing
-		"immediate-deleted-no-finalizer": {
-			key:           claimKey,
-			classes:       classes,
-			claim:         withDeletionTimestamp(claim),
-			expectedClaim: withDeletionTimestamp(claim),
-		},
-		// not deleted, not allocated, no finalizer -> add finalizer, allocate
-		"immediate-do-allocation": {
-			key:     claimKey,
-			classes: classes,
-			claim:   claim,
-			driver: m.expectClassParameters(map[string]interface{}{className: 1}).
-				expectClaimParameters(map[string]interface{}{claimName: 2}).
-				expectAllocate(map[string]allocate{claimName: {allocResult: &allocation, allocErr: nil}}),
-			expectedClaim: withAllocate(claim),
-		},
-		// not deleted, not allocated, finalizer -> allocate
-		"immediate-continue-allocation": {
-			key:     claimKey,
-			classes: classes,
-			claim:   withFinalizer(claim, ourFinalizer),
-			driver: m.expectClassParameters(map[string]interface{}{className: 1}).
-				expectClaimParameters(map[string]interface{}{claimName: 2}).
-				expectAllocate(map[string]allocate{claimName: {allocResult: &allocation, allocErr: nil}}),
-			expectedClaim: withAllocate(claim),
-		},
-		// not deleted, not allocated, finalizer, fail allocation -> requeue
-		"immediate-fail-allocation": {
-			key:     claimKey,
-			classes: classes,
-			claim:   withFinalizer(claim, ourFinalizer),
-			driver: m.expectClassParameters(map[string]interface{}{className: 1}).
-				expectClaimParameters(map[string]interface{}{claimName: 2}).
-				expectAllocate(map[string]allocate{claimName: {allocErr: errors.New("fake error")}}),
-			expectedClaim: withFinalizer(claim, ourFinalizer),
-			expectedError: "allocate: fake error",
-		},
-		// not deleted, allocated -> do nothing
-		"immediate-allocated-nop": {
-			key:           claimKey,
-			classes:       classes,
-			claim:         withAllocate(claim),
-			expectedClaim: withAllocate(claim),
 		},
 
 		// not deleted, reallocate -> deallocate
@@ -257,62 +167,60 @@ func TestController(t *testing.T) {
 			expectedError: "deallocate: fake error",
 		},
 
-		// Delayed allocation is similar in some cases, but not quite
-		// the same.
 		// deletion time stamp set, our finalizer set, not allocated  -> remove finalizer
-		"delayed-deleted-finalizer-removal": {
+		"deleted-finalizer-removal": {
 			key:           claimKey,
 			classes:       classes,
-			claim:         withFinalizer(withDeletionTimestamp(delayedClaim), ourFinalizer),
+			claim:         withFinalizer(withDeletionTimestamp(claim), ourFinalizer),
 			driver:        m.expectDeallocate(map[string]error{claimName: nil}),
-			expectedClaim: withDeletionTimestamp(delayedClaim),
+			expectedClaim: withDeletionTimestamp(claim),
 		},
 		// deletion time stamp set, our finalizer set, not allocated, stopping fails  -> requeue
-		"delayed-deleted-finalizer-stop-failure": {
+		"deleted-finalizer-stop-failure": {
 			key:           claimKey,
 			classes:       classes,
-			claim:         withFinalizer(withDeletionTimestamp(delayedClaim), ourFinalizer),
+			claim:         withFinalizer(withDeletionTimestamp(claim), ourFinalizer),
 			driver:        m.expectDeallocate(map[string]error{claimName: errors.New("fake error")}),
-			expectedClaim: withFinalizer(withDeletionTimestamp(delayedClaim), ourFinalizer),
+			expectedClaim: withFinalizer(withDeletionTimestamp(claim), ourFinalizer),
 			expectedError: "stop allocation: fake error",
 		},
 		// deletion time stamp set, other finalizer set, not allocated  -> do nothing
-		"delayed-deleted-finalizer-no-removal": {
+		"deleted-finalizer-no-removal": {
 			key:           claimKey,
 			classes:       classes,
-			claim:         withFinalizer(withDeletionTimestamp(delayedClaim), otherFinalizer),
-			expectedClaim: withFinalizer(withDeletionTimestamp(delayedClaim), otherFinalizer),
+			claim:         withFinalizer(withDeletionTimestamp(claim), otherFinalizer),
+			expectedClaim: withFinalizer(withDeletionTimestamp(claim), otherFinalizer),
 		},
 		// deletion time stamp set, finalizer set, allocated  -> deallocate
-		"delayed-deleted-allocated": {
+		"deleted-allocated": {
 			key:           claimKey,
 			classes:       classes,
-			claim:         withAllocate(withDeletionTimestamp(delayedClaim)),
+			claim:         withAllocate(withDeletionTimestamp(claim)),
 			driver:        m.expectDeallocate(map[string]error{claimName: nil}),
-			expectedClaim: withDeletionTimestamp(delayedClaim),
+			expectedClaim: withDeletionTimestamp(claim),
 		},
 		// deletion time stamp set, finalizer set, allocated, deallocation fails  -> requeue
-		"delayed-deleted-deallocate-failure": {
+		"deleted-deallocate-failure": {
 			key:           claimKey,
 			classes:       classes,
-			claim:         withAllocate(withDeletionTimestamp(delayedClaim)),
+			claim:         withAllocate(withDeletionTimestamp(claim)),
 			driver:        m.expectDeallocate(map[string]error{claimName: errors.New("fake error")}),
-			expectedClaim: withAllocate(withDeletionTimestamp(delayedClaim)),
+			expectedClaim: withAllocate(withDeletionTimestamp(claim)),
 			expectedError: "deallocate: fake error",
 		},
 		// deletion time stamp set, finalizer not set -> do nothing
-		"delayed-deleted-no-finalizer": {
+		"deleted-no-finalizer": {
 			key:           claimKey,
 			classes:       classes,
-			claim:         withDeletionTimestamp(delayedClaim),
-			expectedClaim: withDeletionTimestamp(delayedClaim),
+			claim:         withDeletionTimestamp(claim),
+			expectedClaim: withDeletionTimestamp(claim),
 		},
 		// waiting for first consumer -> do nothing
-		"delayed-pending": {
+		"pending": {
 			key:           claimKey,
 			classes:       classes,
-			claim:         delayedClaim,
-			expectedClaim: delayedClaim,
+			claim:         claim,
+			expectedClaim: claim,
 		},
 
 		// pod with no claims -> shouldn't occur, check again anyway
@@ -324,34 +232,23 @@ func TestController(t *testing.T) {
 			expectedError:         errPeriodic.Error(),
 		},
 
-		// pod with immediate allocation and selected node -> shouldn't occur, check again in case that claim changes
-		"pod-immediate": {
-			key:                   podKey,
-			claim:                 claim,
-			expectedClaim:         claim,
-			pod:                   podWithClaim,
-			schedulingCtx:         withSelectedNode(podSchedulingCtx),
-			expectedSchedulingCtx: withSelectedNode(podSchedulingCtx),
-			expectedError:         errPeriodic.Error(),
-		},
-
-		// pod with delayed allocation, no potential nodes -> shouldn't occur
-		"pod-delayed-no-nodes": {
+		// no potential nodes -> shouldn't occur
+		"no-nodes": {
 			key:                   podKey,
 			classes:               classes,
-			claim:                 delayedClaim,
-			expectedClaim:         delayedClaim,
+			claim:                 claim,
+			expectedClaim:         claim,
 			pod:                   podWithClaim,
 			schedulingCtx:         podSchedulingCtx,
 			expectedSchedulingCtx: podSchedulingCtx,
 		},
 
-		// pod with delayed allocation, potential nodes -> provide unsuitable nodes
-		"pod-delayed-info": {
+		// potential nodes -> provide unsuitable nodes
+		"info": {
 			key:           podKey,
 			classes:       classes,
-			claim:         delayedClaim,
-			expectedClaim: delayedClaim,
+			claim:         claim,
+			expectedClaim: claim,
 			pod:           podWithClaim,
 			schedulingCtx: withPotentialNodes(podSchedulingCtx),
 			driver: m.expectClassParameters(map[string]interface{}{className: 1}).
@@ -361,23 +258,23 @@ func TestController(t *testing.T) {
 			expectedError:         errPeriodic.Error(),
 		},
 
-		// pod with delayed allocation, potential nodes, selected node, missing class -> failure
-		"pod-delayed-missing-class": {
+		// potential nodes, selected node, missing class -> failure
+		"missing-class": {
 			key:                   podKey,
-			claim:                 delayedClaim,
-			expectedClaim:         delayedClaim,
+			claim:                 claim,
+			expectedClaim:         claim,
 			pod:                   podWithClaim,
 			schedulingCtx:         withSelectedNode(withPotentialNodes(podSchedulingCtx)),
 			expectedSchedulingCtx: withSelectedNode(withPotentialNodes(podSchedulingCtx)),
 			expectedError:         `pod claim my-pod-claim: resourceclass.resource.k8s.io "mock-class" not found`,
 		},
 
-		// pod with delayed allocation, potential nodes, selected node -> allocate
-		"pod-delayed-allocate": {
+		// potential nodes, selected node -> allocate
+		"allocate": {
 			key:           podKey,
 			classes:       classes,
-			claim:         delayedClaim,
-			expectedClaim: withReservedFor(withAllocate(delayedClaim), pod),
+			claim:         claim,
+			expectedClaim: withReservedFor(withAllocate(claim), pod),
 			pod:           podWithClaim,
 			schedulingCtx: withSelectedNode(withPotentialNodes(podSchedulingCtx)),
 			driver: m.expectClassParameters(map[string]interface{}{className: 1}).
@@ -387,12 +284,12 @@ func TestController(t *testing.T) {
 			expectedSchedulingCtx: withUnsuitableNodes(withSelectedNode(withPotentialNodes(podSchedulingCtx))),
 			expectedError:         errPeriodic.Error(),
 		},
-		// pod with delayed allocation, potential nodes, selected node, all unsuitable -> update unsuitable nodes
-		"pod-selected-is-potential-node": {
+		// potential nodes, selected node, all unsuitable -> update unsuitable nodes
+		"is-potential-node": {
 			key:           podKey,
 			classes:       classes,
-			claim:         delayedClaim,
-			expectedClaim: delayedClaim,
+			claim:         claim,
+			expectedClaim: claim,
 			pod:           podWithClaim,
 			schedulingCtx: withPotentialNodes(withSelectedNode(withPotentialNodes(podSchedulingCtx))),
 			driver: m.expectClassParameters(map[string]interface{}{className: 1}).
@@ -401,12 +298,12 @@ func TestController(t *testing.T) {
 			expectedSchedulingCtx: withSpecificUnsuitableNodes(withSelectedNode(withPotentialNodes(podSchedulingCtx)), potentialNodes),
 			expectedError:         errPeriodic.Error(),
 		},
-		// pod with delayed allocation, max potential nodes, other selected node, all unsuitable -> update unsuitable nodes with truncation at start
-		"pod-selected-is-potential-node-truncate-first": {
+		// max potential nodes, other selected node, all unsuitable -> update unsuitable nodes with truncation at start
+		"is-potential-node-truncate-first": {
 			key:           podKey,
 			classes:       classes,
-			claim:         delayedClaim,
-			expectedClaim: delayedClaim,
+			claim:         claim,
+			expectedClaim: claim,
 			pod:           podWithClaim,
 			schedulingCtx: withSpecificPotentialNodes(withSelectedNode(withSpecificPotentialNodes(podSchedulingCtx, maxNodes)), maxNodes),
 			driver: m.expectClassParameters(map[string]interface{}{className: 1}).
@@ -415,12 +312,12 @@ func TestController(t *testing.T) {
 			expectedSchedulingCtx: withSpecificUnsuitableNodes(withSelectedNode(withSpecificPotentialNodes(podSchedulingCtx, maxNodes)), append(maxNodes[1:], nodeName)),
 			expectedError:         errPeriodic.Error(),
 		},
-		// pod with delayed allocation, max potential nodes, other selected node, all unsuitable (but in reverse order) -> update unsuitable nodes with truncation at end
+		// max potential nodes, other selected node, all unsuitable (but in reverse order) -> update unsuitable nodes with truncation at end
 		"pod-selected-is-potential-node-truncate-last": {
 			key:           podKey,
 			classes:       classes,
-			claim:         delayedClaim,
-			expectedClaim: delayedClaim,
+			claim:         claim,
+			expectedClaim: claim,
 			pod:           podWithClaim,
 			schedulingCtx: withSpecificPotentialNodes(withSelectedNode(withSpecificPotentialNodes(podSchedulingCtx, maxNodes)), maxNodes),
 			driver: m.expectClassParameters(map[string]interface{}{className: 1}).
@@ -652,7 +549,6 @@ func createClaim(claimName, claimNamespace, className string) *resourceapi.Resou
 		},
 		Spec: resourceapi.ResourceClaimSpec{
 			ResourceClassName: className,
-			AllocationMode:    resourceapi.AllocationModeImmediate,
 		},
 	}
 }

test/e2e/dra/dra.go

@@ -27,7 +27,6 @@ import (
 
 	"github.com/onsi/ginkgo/v2"
 	"github.com/onsi/gomega"
-	"github.com/onsi/gomega/gcustom"
 	"github.com/onsi/gomega/gstruct"
 	"github.com/onsi/gomega/types"
 
@@ -100,7 +99,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 				ginkgo.By("waiting for container startup to fail")
 				parameters := b.parameters()
-				pod, template := b.podInline(resourceapi.AllocationModeWaitForFirstConsumer)
+				pod, template := b.podInline()
 
 				b.create(ctx, parameters, pod, template)
 
@@ -126,7 +125,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 				// Pretend that the resource is allocated and reserved for some other entity.
 				// Until the resourceclaim controller learns to remove reservations for
 				// arbitrary types we can simply fake somthing here.
-				claim := b.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer)
+				claim := b.externalClaim()
 				b.create(ctx, claim)
 
 				claim, err := f.ClientSet.ResourceV1alpha3().ResourceClaims(f.Namespace.Name).Get(ctx, claim.Name, metav1.GetOptions{})
@@ -180,7 +179,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 			ginkgo.It("must unprepare resources for force-deleted pod", func(ctx context.Context) {
 				parameters := b.parameters()
-				claim := b.externalClaim(resourceapi.AllocationModeImmediate)
+				claim := b.externalClaim()
 				pod := b.podExternal()
 				zero := int64(0)
 				pod.Spec.TerminationGracePeriodSeconds = &zero
@@ -203,7 +202,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 			ginkgo.It("must skip NodePrepareResource if not used by any container", func(ctx context.Context) {
 				parameters := b.parameters()
-				pod, template := b.podInline(resourceapi.AllocationModeWaitForFirstConsumer)
+				pod, template := b.podInline()
 				for i := range pod.Spec.Containers {
 					pod.Spec.Containers[i].Resources.Claims = nil
 				}
@@ -219,10 +218,10 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 	// claimTests tries out several different combinations of pods with
 	// claims, both inline and external.
-	claimTests := func(b *builder, driver *Driver, allocationMode resourceapi.AllocationMode) {
+	claimTests := func(b *builder, driver *Driver) {
 		ginkgo.It("supports simple pod referencing inline resource claim", func(ctx context.Context) {
 			objects, expectedEnv := b.flexibleParameters()
-			pod, template := b.podInline(allocationMode)
+			pod, template := b.podInline()
 			objects = append(objects, pod, template)
 			b.create(ctx, objects...)
 
@@ -231,7 +230,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 		ginkgo.It("supports inline claim referenced by multiple containers", func(ctx context.Context) {
 			objects, expectedEnv := b.flexibleParameters()
-			pod, template := b.podInlineMultiple(allocationMode)
+			pod, template := b.podInlineMultiple()
 			objects = append(objects, pod, template)
 			b.create(ctx, objects...)
 
@@ -241,7 +240,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 		ginkgo.It("supports simple pod referencing external resource claim", func(ctx context.Context) {
 			objects, expectedEnv := b.flexibleParameters()
 			pod := b.podExternal()
-			claim := b.externalClaim(allocationMode)
+			claim := b.externalClaim()
 			objects = append(objects, claim, pod)
 			b.create(ctx, objects...)
 
@@ -253,7 +252,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 			pod1 := b.podExternal()
 			pod2 := b.podExternal()
 			pod3 := b.podExternal()
-			claim := b.externalClaim(allocationMode)
+			claim := b.externalClaim()
 			objects = append(objects, claim, pod1, pod2, pod3)
 			b.create(ctx, objects...)
 
@@ -267,7 +266,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 			pod1 := b.podExternalMultiple()
 			pod2 := b.podExternalMultiple()
 			pod3 := b.podExternalMultiple()
-			claim := b.externalClaim(allocationMode)
+			claim := b.externalClaim()
 			objects = append(objects, claim, pod1, pod2, pod3)
 			b.create(ctx, objects...)
 
@@ -278,7 +277,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 		ginkgo.It("supports init containers", func(ctx context.Context) {
 			objects, expectedEnv := b.flexibleParameters()
-			pod, template := b.podInline(allocationMode)
+			pod, template := b.podInline()
 			pod.Spec.InitContainers = []v1.Container{pod.Spec.Containers[0]}
 			pod.Spec.InitContainers[0].Name += "-init"
 			// This must succeed for the pod to start.
@@ -292,7 +291,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 		ginkgo.It("removes reservation from claim when pod is done", func(ctx context.Context) {
 			objects, _ := b.flexibleParameters()
 			pod := b.podExternal()
-			claim := b.externalClaim(allocationMode)
+			claim := b.externalClaim()
 			pod.Spec.Containers[0].Command = []string{"true"}
 			objects = append(objects, claim, pod)
 			b.create(ctx, objects...)
@@ -307,7 +306,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 		ginkgo.It("deletes generated claims when pod is done", func(ctx context.Context) {
 			objects, _ := b.flexibleParameters()
-			pod, template := b.podInline(allocationMode)
+			pod, template := b.podInline()
 			pod.Spec.Containers[0].Command = []string{"true"}
 			objects = append(objects, template, pod)
 			b.create(ctx, objects...)
@@ -326,7 +325,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 		ginkgo.It("does not delete generated claims when pod is restarting", func(ctx context.Context) {
 			objects, _ := b.flexibleParameters()
-			pod, template := b.podInline(allocationMode)
+			pod, template := b.podInline()
 			pod.Spec.Containers[0].Command = []string{"sh", "-c", "sleep 1; exit 1"}
 			pod.Spec.RestartPolicy = v1.RestartPolicyAlways
 			objects = append(objects, template, pod)
@@ -341,10 +340,10 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 			}
 		})
 
-		ginkgo.It("must deallocate after use when using delayed allocation", func(ctx context.Context) {
+		ginkgo.It("must deallocate after use", func(ctx context.Context) {
 			objects, expectedEnv := b.flexibleParameters()
 			pod := b.podExternal()
-			claim := b.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer)
+			claim := b.externalClaim()
 			objects = append(objects, claim, pod)
 			b.create(ctx, objects...)
 
@@ -383,7 +382,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 		ginkgo.It("supports claim and class parameters", func(ctx context.Context) {
 			objects, expectedEnv := b.flexibleParameters()
 
-			pod, template := b.podInline(resourceapi.AllocationModeWaitForFirstConsumer)
+			pod, template := b.podInline()
 			objects = append(objects, pod, template)
 
 			b.create(ctx, objects...)
@@ -395,7 +394,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 			objects, expectedEnv := b.flexibleParameters()
 			pods := make([]*v1.Pod, numPods)
 			for i := 0; i < numPods; i++ {
-				pod, template := b.podInline(resourceapi.AllocationModeWaitForFirstConsumer)
+				pod, template := b.podInline()
 				pods[i] = pod
 				objects = append(objects, pod, template)
 			}
@@ -421,7 +420,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 		ginkgo.It("supports sharing a claim concurrently", func(ctx context.Context) {
 			objects, expectedEnv := b.flexibleParameters()
-			objects = append(objects, b.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer))
+			objects = append(objects, b.externalClaim())
 
 			pods := make([]*v1.Pod, numPods)
 			for i := 0; i < numPods; i++ {
@@ -459,7 +458,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 				objects[len(objects)-1].(*resourceapi.ResourceClaimParameters).Shareable = false
 			}
 
-			objects = append(objects, b.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer))
+			objects = append(objects, b.externalClaim())
 
 			pods := make([]*v1.Pod, numPods)
 			for i := 0; i < numPods; i++ {
@@ -491,7 +490,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 		ginkgo.It("retries pod scheduling after creating resource class", func(ctx context.Context) {
 			objects, expectedEnv := b.flexibleParameters()
-			pod, template := b.podInline(resourceapi.AllocationModeWaitForFirstConsumer)
+			pod, template := b.podInline()
 			class, err := f.ClientSet.ResourceV1alpha3().ResourceClasses().Get(ctx, template.Spec.Spec.ResourceClassName, metav1.GetOptions{})
 			framework.ExpectNoError(err)
 			template.Spec.Spec.ResourceClassName += "-b"
@@ -510,7 +509,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 		ginkgo.It("retries pod scheduling after updating resource class", func(ctx context.Context) {
 			objects, expectedEnv := b.flexibleParameters()
-			pod, template := b.podInline(resourceapi.AllocationModeWaitForFirstConsumer)
+			pod, template := b.podInline()
 
 			// First modify the class so that it matches no nodes.
 			class, err := f.ClientSet.ResourceV1alpha3().ResourceClasses().Get(ctx, template.Spec.Spec.ResourceClassName, metav1.GetOptions{})
@@ -546,7 +545,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 		})
 
 		ginkgo.It("runs a pod without a generated resource claim", func(ctx context.Context) {
-			pod, _ /* template */ := b.podInline(resourceapi.AllocationModeWaitForFirstConsumer)
+			pod, _ /* template */ := b.podInline()
 			created := b.create(ctx, pod)
 			pod = created[0].(*v1.Pod)
 
@@ -563,13 +562,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 			framework.ExpectNoError(e2epod.WaitForPodRunningInNamespace(ctx, f.ClientSet, pod))
 		})
 
-		ginkgo.Context("with delayed allocation", func() {
-			claimTests(b, driver, resourceapi.AllocationModeWaitForFirstConsumer)
-		})
-
-		ginkgo.Context("with immediate allocation", func() {
-			claimTests(b, driver, resourceapi.AllocationModeImmediate)
-		})
+		claimTests(b, driver)
 	}
 
 	// These tests depend on having more than one node and a DRA driver controller.
@@ -603,7 +596,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 			}
 			pod1 := createPod()
 			pod2 := createPod()
-			claim := b.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer)
+			claim := b.externalClaim()
 			b.create(ctx, parameters, claim, pod1, pod2)
 
 			for _, pod := range []*v1.Pod{pod1, pod2} {
@@ -624,7 +617,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 			instance := f.UniqueName + "-test-app"
 			pod := b.podExternal()
 			pod.Labels[label] = instance
-			claim := b.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer)
+			claim := b.externalClaim()
 			b.create(ctx, parameters, claim, pod)
 
 			ginkgo.By("wait for test pod " + pod.Name + " to run")
@@ -714,13 +707,13 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 					parameters1 := b.parameters()
 					parameters2 := b2.parameters()
 					// Order is relevant here: each pod must be matched with its own claim.
-					pod1claim1 := b.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer)
+					pod1claim1 := b.externalClaim()
 					pod1 := b.podExternal()
-					pod2claim1 := b2.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer)
+					pod2claim1 := b2.externalClaim()
 					pod2 := b2.podExternal()
 
 					// Add another claim to pod1.
-					pod1claim2 := b2.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer)
+					pod1claim2 := b2.externalClaim()
 					pod1.Spec.ResourceClaims = append(pod1.Spec.ResourceClaims,
 						v1.PodResourceClaim{
 							Name:              "claim-other",
@@ -801,51 +794,41 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 			driver.parameterMode = parameterMode
 			b := newBuilder(f, driver)
 
-			tests := func(allocationMode resourceapi.AllocationMode) {
-				ginkgo.It("uses all resources", func(ctx context.Context) {
-					objs, _ := b.flexibleParameters()
-					var pods []*v1.Pod
-					for i := 0; i < len(nodes.NodeNames); i++ {
-						pod, template := b.podInline(allocationMode)
-						pods = append(pods, pod)
-						objs = append(objs, pod, template)
+			ginkgo.It("uses all resources", func(ctx context.Context) {
+				objs, _ := b.flexibleParameters()
+				var pods []*v1.Pod
+				for i := 0; i < len(nodes.NodeNames); i++ {
+					pod, template := b.podInline()
+					pods = append(pods, pod)
+					objs = append(objs, pod, template)
+				}
+				b.create(ctx, objs...)
+
+				for _, pod := range pods {
+					err := e2epod.WaitForPodRunningInNamespace(ctx, f.ClientSet, pod)
+					framework.ExpectNoError(err, "start pod")
+				}
+
+				// The pods all should run on different
+				// nodes because the maximum number of
+				// claims per node was limited to 1 for
+				// this test.
+				//
+				// We cannot know for sure why the pods
+				// ran on two different nodes (could
+				// also be a coincidence) but if they
+				// don't cover all nodes, then we have
+				// a problem.
+				used := make(map[string]*v1.Pod)
+				for _, pod := range pods {
+					pod, err := f.ClientSet.CoreV1().Pods(pod.Namespace).Get(ctx, pod.Name, metav1.GetOptions{})
+					framework.ExpectNoError(err, "get pod")
+					nodeName := pod.Spec.NodeName
+					if other, ok := used[nodeName]; ok {
+						framework.Failf("Pod %s got started on the same node %s as pod %s although claim allocation should have been limited to one claim per node.", pod.Name, nodeName, other.Name)
 					}
-					b.create(ctx, objs...)
-
-					for _, pod := range pods {
-						err := e2epod.WaitForPodRunningInNamespace(ctx, f.ClientSet, pod)
-						framework.ExpectNoError(err, "start pod")
-					}
-
-					// The pods all should run on different
-					// nodes because the maximum number of
-					// claims per node was limited to 1 for
-					// this test.
-					//
-					// We cannot know for sure why the pods
-					// ran on two different nodes (could
-					// also be a coincidence) but if they
-					// don't cover all nodes, then we have
-					// a problem.
-					used := make(map[string]*v1.Pod)
-					for _, pod := range pods {
-						pod, err := f.ClientSet.CoreV1().Pods(pod.Namespace).Get(ctx, pod.Name, metav1.GetOptions{})
-						framework.ExpectNoError(err, "get pod")
-						nodeName := pod.Spec.NodeName
-						if other, ok := used[nodeName]; ok {
-							framework.Failf("Pod %s got started on the same node %s as pod %s although claim allocation should have been limited to one claim per node.", pod.Name, nodeName, other.Name)
-						}
-						used[nodeName] = pod
-					}
-				})
-			}
-
-			ginkgo.Context("with delayed allocation", func() {
-				tests(resourceapi.AllocationModeWaitForFirstConsumer)
-			})
-
-			ginkgo.Context("with immediate allocation", func() {
-				tests(resourceapi.AllocationModeImmediate)
+					used[nodeName] = pod
+				}
 			})
 		})
 	}
@@ -873,7 +856,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 		ginkgo.It("truncates the name of a generated resource claim", func(ctx context.Context) {
 			parameters := b.parameters()
-			pod, template := b.podInline(resourceapi.AllocationModeWaitForFirstConsumer)
+			pod, template := b.podInline()
 			pod.Name = strings.Repeat("p", 63)
 			pod.Spec.ResourceClaims[0].Name = strings.Repeat("c", 63)
 			pod.Spec.Containers[0].Resources.Claims[0].Name = pod.Spec.ResourceClaims[0].Name
@@ -1039,118 +1022,16 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 			// which is the goal for 1.31 to support version skew for kubelet.
 		})
 
-		ginkgo.Context("with local unshared resources", func() {
-			driver := NewDriver(f, nodes, func() app.Resources {
-				return app.Resources{
-					NodeLocal:      true,
-					MaxAllocations: 10,
-					Nodes:          nodes.NodeNames,
-				}
-			})
-			b := newBuilder(f, driver)
-
-			// This test covers some special code paths in the scheduler:
-			// - Patching the ReservedFor during PreBind because in contrast
-			//   to claims specifically allocated for a pod, here the claim
-			//   gets allocated without reserving it.
-			// - Error handling when PreBind fails: multiple attempts to bind pods
-			//   are started concurrently, only one attempt succeeds.
-			// - Removing a ReservedFor entry because the first inline claim gets
-			//   reserved during allocation.
-			ginkgo.It("reuses an allocated immediate claim", func(ctx context.Context) {
-				objects := []klog.KMetadata{
-					b.parameters(),
-					b.externalClaim(resourceapi.AllocationModeImmediate),
-				}
-				podExternal := b.podExternal()
-
-				// Create many pods to increase the chance that the scheduler will
-				// try to bind two pods at the same time.
-				numPods := 5
-				for i := 0; i < numPods; i++ {
-					podInline, claimTemplate := b.podInline(resourceapi.AllocationModeWaitForFirstConsumer)
-					podInline.Spec.Containers[0].Resources.Claims = append(podInline.Spec.Containers[0].Resources.Claims, podExternal.Spec.Containers[0].Resources.Claims[0])
-					podInline.Spec.ResourceClaims = append(podInline.Spec.ResourceClaims, podExternal.Spec.ResourceClaims[0])
-					objects = append(objects, claimTemplate, podInline)
-				}
-				b.create(ctx, objects...)
-
-				var runningPod *v1.Pod
-				haveRunningPod := gcustom.MakeMatcher(func(pods []v1.Pod) (bool, error) {
-					numRunning := 0
-					runningPod = nil
-					for _, pod := range pods {
-						if pod.Status.Phase == v1.PodRunning {
-							pod := pod // Don't keep pointer to loop variable...
-							runningPod = &pod
-							numRunning++
-						}
-					}
-					return numRunning == 1, nil
-				}).WithTemplate("Expected one running Pod.\nGot instead:\n{{.FormattedActual}}")
-
-				for i := 0; i < numPods; i++ {
-					ginkgo.By("waiting for exactly one pod to start")
-					runningPod = nil
-					gomega.Eventually(ctx, b.listTestPods).WithTimeout(f.Timeouts.PodStartSlow).Should(haveRunningPod)
-
-					ginkgo.By("checking that no other pod gets scheduled")
-					havePendingPods := gcustom.MakeMatcher(func(pods []v1.Pod) (bool, error) {
-						numPending := 0
-						for _, pod := range pods {
-							if pod.Status.Phase == v1.PodPending {
-								numPending++
-							}
-						}
-						return numPending == numPods-1-i, nil
-					}).WithTemplate("Expected only one running Pod.\nGot instead:\n{{.FormattedActual}}")
-					gomega.Consistently(ctx, b.listTestPods).WithTimeout(time.Second).Should(havePendingPods)
-
-					ginkgo.By(fmt.Sprintf("deleting pod %s", klog.KObj(runningPod)))
-					framework.ExpectNoError(b.f.ClientSet.CoreV1().Pods(b.f.Namespace.Name).Delete(ctx, runningPod.Name, metav1.DeleteOptions{}))
-
-					ginkgo.By(fmt.Sprintf("waiting for pod %s to disappear", klog.KObj(runningPod)))
-					framework.ExpectNoError(e2epod.WaitForPodNotFoundInNamespace(ctx, b.f.ClientSet, runningPod.Name, runningPod.Namespace, f.Timeouts.PodDelete))
-				}
-			})
-		})
-
-		ginkgo.Context("with shared network resources", func() {
-			driver := NewDriver(f, nodes, networkResources)
-			b := newBuilder(f, driver)
-
-			// This test complements "reuses an allocated immediate claim" above:
-			// because the claim can be shared, each PreBind attempt succeeds.
-			ginkgo.It("shares an allocated immediate claim", func(ctx context.Context) {
-				objects := []klog.KMetadata{
-					b.parameters(),
-					b.externalClaim(resourceapi.AllocationModeImmediate),
-				}
-				// Create many pods to increase the chance that the scheduler will
-				// try to bind two pods at the same time.
-				numPods := 5
-				pods := make([]*v1.Pod, numPods)
-				for i := 0; i < numPods; i++ {
-					pods[i] = b.podExternal()
-					objects = append(objects, pods[i])
-				}
-				b.create(ctx, objects...)
-
-				ginkgo.By("waiting all pods to start")
-				framework.ExpectNoError(e2epod.WaitForPodsRunning(ctx, b.f.ClientSet, f.Namespace.Name, numPods+len(nodes.NodeNames) /* driver(s) */, f.Timeouts.PodStartSlow))
-			})
-		})
-
 		// kube-controller-manager can trigger delayed allocation for pods where the
 		// node name was already selected when creating the pod. For immediate
 		// allocation, the creator has to ensure that the node matches the claims.
 		// This does not work for resource claim templates and only isn't
 		// a problem here because the resource is network-attached and available
 		// on all nodes.
-		preScheduledTests := func(b *builder, driver *Driver, allocationMode resourceapi.AllocationMode) {
+		preScheduledTests := func(b *builder, driver *Driver) {
 			ginkgo.It("supports scheduled pod referencing inline resource claim", func(ctx context.Context) {
 				parameters := b.parameters()
-				pod, template := b.podInline(allocationMode)
+				pod, template := b.podInline()
 				pod.Spec.NodeName = nodes.NodeNames[0]
 				b.create(ctx, parameters, pod, template)
 
@@ -1159,7 +1040,7 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 
 			ginkgo.It("supports scheduled pod referencing external resource claim", func(ctx context.Context) {
 				parameters := b.parameters()
-				claim := b.externalClaim(allocationMode)
+				claim := b.externalClaim()
 				pod := b.podExternal()
 				pod.Spec.NodeName = nodes.NodeNames[0]
 				b.create(ctx, parameters, claim, pod)
@@ -1168,30 +1049,22 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 			})
 		}
 
-		ginkgo.Context("with delayed allocation and setting ReservedFor", func() {
+		ginkgo.Context("with setting ReservedFor", func() {
 			driver := NewDriver(f, nodes, networkResources)
 			b := newBuilder(f, driver)
-			preScheduledTests(b, driver, resourceapi.AllocationModeWaitForFirstConsumer)
-			claimTests(b, driver, resourceapi.AllocationModeWaitForFirstConsumer)
+			preScheduledTests(b, driver)
+			claimTests(b, driver)
 		})
 
-		ginkgo.Context("with delayed allocation and not setting ReservedFor", func() {
+		ginkgo.Context("without setting ReservedFor", func() {
 			driver := NewDriver(f, nodes, func() app.Resources {
 				resources := networkResources()
 				resources.DontSetReservedFor = true
 				return resources
 			})
 			b := newBuilder(f, driver)
-			preScheduledTests(b, driver, resourceapi.AllocationModeWaitForFirstConsumer)
-			claimTests(b, driver, resourceapi.AllocationModeWaitForFirstConsumer)
-		})
-
-		ginkgo.Context("with immediate allocation", func() {
-			driver := NewDriver(f, nodes, networkResources)
-			b := newBuilder(f, driver)
-			preScheduledTests(b, driver, resourceapi.AllocationModeImmediate)
-			claimTests(b, driver, resourceapi.AllocationModeImmediate)
-
+			preScheduledTests(b, driver)
+			claimTests(b, driver)
 		})
 	})
 
@@ -1209,10 +1082,10 @@ var _ = framework.SIGDescribe("node")("DRA", feature.DynamicResourceAllocation,
 		ginkgo.It("work", func(ctx context.Context) {
 			parameters1 := b1.parameters()
 			parameters2 := b2.parameters()
-			claim1 := b1.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer)
-			claim1b := b1.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer)
-			claim2 := b2.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer)
-			claim2b := b2.externalClaim(resourceapi.AllocationModeWaitForFirstConsumer)
+			claim1 := b1.externalClaim()
+			claim1b := b1.externalClaim()
+			claim2 := b2.externalClaim()
+			claim2b := b2.externalClaim()
 			pod := b1.podExternal()
 			for i, claim := range []*resourceapi.ResourceClaim{claim1b, claim2, claim2b} {
 				claim := claim
@@ -1298,7 +1171,7 @@ func (b *builder) nodeSelector() *v1.NodeSelector {
 
 // externalClaim returns external resource claim
 // that test pods can reference
-func (b *builder) externalClaim(allocationMode resourceapi.AllocationMode) *resourceapi.ResourceClaim {
+func (b *builder) externalClaim() *resourceapi.ResourceClaim {
 	b.claimCounter++
 	name := "external-claim" + b.driver.NameSuffix // This is what podExternal expects.
 	if b.claimCounter > 1 {
@@ -1315,7 +1188,6 @@ func (b *builder) externalClaim(allocationMode resourceapi.AllocationMode) *reso
 				Kind:     b.driver.claimParameterAPIKind,
 				Name:     b.parametersName(),
 			},
-			AllocationMode: allocationMode,
 		},
 	}
 }
@@ -1493,7 +1365,7 @@ func (b *builder) pod() *v1.Pod {
 }
 
 // makePodInline adds an inline resource claim with default class name and parameters.
-func (b *builder) podInline(allocationMode resourceapi.AllocationMode) (*v1.Pod, *resourceapi.ResourceClaimTemplate) {
+func (b *builder) podInline() (*v1.Pod, *resourceapi.ResourceClaimTemplate) {
 	pod := b.pod()
 	pod.Spec.Containers[0].Name = "with-resource"
 	podClaimName := "my-inline-claim"
@@ -1517,7 +1389,6 @@ func (b *builder) podInline(allocationMode resourceapi.AllocationMode) (*v1.Pod,
 					Kind:     b.driver.claimParameterAPIKind,
 					Name:     b.parametersName(),
 				},
-				AllocationMode: allocationMode,
 			},
 		},
 	}
@@ -1525,8 +1396,8 @@ func (b *builder) podInline(allocationMode resourceapi.AllocationMode) (*v1.Pod,
 }
 
 // podInlineMultiple returns a pod with inline resource claim referenced by 3 containers
-func (b *builder) podInlineMultiple(allocationMode resourceapi.AllocationMode) (*v1.Pod, *resourceapi.ResourceClaimTemplate) {
-	pod, template := b.podInline(allocationMode)
+func (b *builder) podInlineMultiple() (*v1.Pod, *resourceapi.ResourceClaimTemplate) {
+	pod, template := b.podInline()
 	pod.Spec.Containers = append(pod.Spec.Containers, *pod.Spec.Containers[0].DeepCopy(), *pod.Spec.Containers[0].DeepCopy())
 	pod.Spec.Containers[1].Name = pod.Spec.Containers[1].Name + "-1"
 	pod.Spec.Containers[2].Name = pod.Spec.Containers[1].Name + "-2"

test/e2e/dra/test-driver/README.md

@@ -78,8 +78,8 @@ configmap/pause-claim-parameters created
 pod/pause created
 
 $ kubectl get resourceclaims
-NAME             CLASSNAME   ALLOCATIONMODE         STATE                AGE
-pause-resource   example     WaitForFirstConsumer   allocated,reserved   19s
+NAME             CLASSNAME   STATE                AGE
+pause-resource   example     allocated,reserved   19s
 
 $ kubectl get pods
 NAME    READY   STATUS    RESTARTS   AGE

test/e2e/dra/test-driver/deploy/example/resourceclaim.yaml

@@ -12,7 +12,6 @@ metadata:
   name: example
   namespace: default
 spec:
-  allocationMode: Immediate
   resourceClassName: example
   parametersRef:
     kind: ConfigMap

test/integration/etcd/data.go

@@ -409,11 +409,11 @@ func GetEtcdStorageDataForNamespace(namespace string) map[schema.GroupVersionRes
 			ExpectedEtcdPath: "/registry/resourceclasses/class1name",
 		},
 		gvr("resource.k8s.io", "v1alpha3", "resourceclaims"): {
-			Stub:             `{"metadata": {"name": "claim1name"}, "spec": {"resourceClassName": "class1name", "allocationMode": "WaitForFirstConsumer"}}`,
+			Stub:             `{"metadata": {"name": "claim1name"}, "spec": {"resourceClassName": "class1name"}}`,
 			ExpectedEtcdPath: "/registry/resourceclaims/" + namespace + "/claim1name",
 		},
 		gvr("resource.k8s.io", "v1alpha3", "resourceclaimtemplates"): {
-			Stub:             `{"metadata": {"name": "claimtemplate1name"}, "spec": {"spec": {"resourceClassName": "class1name", "allocationMode": "WaitForFirstConsumer"}}}`,
+			Stub:             `{"metadata": {"name": "claimtemplate1name"}, "spec": {"spec": {"resourceClassName": "class1name"}}}`,
 			ExpectedEtcdPath: "/registry/resourceclaimtemplates/" + namespace + "/claimtemplate1name",
 		},
 		gvr("resource.k8s.io", "v1alpha3", "podschedulingcontexts"): {