refactor(snapshot): add manifest-based snapshotctl flow and shared workload builders (#7671)

Signed-off-by: Schwinn Saereesitthipitak <schwinns@nvidia.com>

deploy/operator/internal/controller/dynamocheckpoint_controller_test.go

@@ -25,7 +25,9 @@ import (
 	configv1alpha1 "github.com/ai-dynamo/dynamo/deploy/operator/api/config/v1alpha1"
 	nvidiacomv1alpha1 "github.com/ai-dynamo/dynamo/deploy/operator/api/v1alpha1"
 	"github.com/ai-dynamo/dynamo/deploy/operator/internal/checkpoint"
+	"github.com/ai-dynamo/dynamo/deploy/operator/internal/checkpointjob"
 	"github.com/ai-dynamo/dynamo/deploy/operator/internal/consts"
+	snapshotprotocol "github.com/ai-dynamo/dynamo/deploy/snapshot/protocol"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	batchv1 "k8s.io/api/batch/v1"
@@ -58,7 +60,9 @@ var testHash = func() string {
 	return hash
 }()
 
-var defaultCheckpointJobName = "checkpoint-job-" + testHash + "-" + consts.DefaultCheckpointArtifactVersion
+var defaultCheckpointJobName = checkpointjob.DesiredCheckpointJobName(testHash, map[string]string{
+	snapshotprotocol.CheckpointArtifactVersionAnnotation: snapshotprotocol.DefaultCheckpointArtifactVersion,
+})
 
 func checkpointTestScheme() *runtime.Scheme {
 	s := runtime.NewScheme()
@@ -74,13 +78,6 @@ func checkpointTestConfig() *configv1alpha1.OperatorConfiguration {
 		Checkpoint: configv1alpha1.CheckpointConfiguration{
 			Enabled:                    true,
 			ReadyForCheckpointFilePath: "/tmp/ready-for-checkpoint",
-			Storage: configv1alpha1.CheckpointStorageConfiguration{
-				Type: configv1alpha1.CheckpointStorageTypePVC,
-				PVC: configv1alpha1.CheckpointPVCConfig{
-					PVCName:  "snapshot-pvc",
-					BasePath: "/checkpoints",
-				},
-			},
 		},
 	}
 }
@@ -143,14 +140,15 @@ func TestBuildCheckpointJob(t *testing.T) {
 	}
 
 	r := makeCheckpointReconciler(s, ckpt)
-	job := r.buildCheckpointJob(ckpt, defaultCheckpointJobName)
+	job, err := checkpointjob.BuildCheckpointJob(r.Config, ckpt, defaultCheckpointJobName)
+	require.NoError(t, err)
 	podSpec := job.Spec.Template.Spec
 	main := podSpec.Containers[0]
 
 	// Job and pod template labels
-	assert.Equal(t, testHash, job.Labels[consts.KubeLabelCheckpointHash])
+	assert.Equal(t, testHash, job.Labels[consts.KubeLabelCheckpointID])
 	assert.Equal(t, "true", job.Spec.Template.Labels[consts.KubeLabelIsCheckpointSource])
-	assert.Equal(t, testHash, job.Spec.Template.Labels[consts.KubeLabelCheckpointHash])
+	assert.Equal(t, testHash, job.Spec.Template.Labels[consts.KubeLabelCheckpointID])
 
 	// Env vars (checkpoint-specific + user-provided preserved)
 	envMap := make(map[string]string, len(main.Env))
@@ -234,25 +232,26 @@ func TestBuildCheckpointJob(t *testing.T) {
 	assert.Equal(t, int32(0), *job.Spec.BackoffLimit)
 	assert.Equal(t, int32(300), *job.Spec.TTLSecondsAfterFinished)
 
-	// Custom deadlines override defaults, but checkpoint jobs never retry.
+	// Custom active deadlines override defaults, but checkpoint jobs never retry and keep a fixed TTL.
 	deadline := int64(7200)
 	backoff := int32(5)
-	ttl := int32(600)
 	ckpt.Spec.Job.ActiveDeadlineSeconds = &deadline
 	ckpt.Spec.Job.BackoffLimit = &backoff //nolint:staticcheck // Compatibility test: deprecated field must remain ignored by checkpoint Jobs.
-	ckpt.Spec.Job.TTLSecondsAfterFinished = &ttl
-	job = r.buildCheckpointJob(ckpt, defaultCheckpointJobName)
+	job, err = checkpointjob.BuildCheckpointJob(r.Config, ckpt, defaultCheckpointJobName)
+	require.NoError(t, err)
 	assert.Equal(t, int64(7200), *job.Spec.ActiveDeadlineSeconds)
 	assert.Equal(t, int32(0), *job.Spec.BackoffLimit)
-	assert.Equal(t, int32(600), *job.Spec.TTLSecondsAfterFinished)
+	assert.Equal(t, int32(300), *job.Spec.TTLSecondsAfterFinished)
 
 	ckpt.Spec.Job.PodTemplateSpec.Spec.Containers[0].Resources = corev1.ResourceRequirements{
 		Limits: corev1.ResourceList{
 			corev1.ResourceName("nvidia.com/gpu"): resource.MustParse("2"),
 		},
 	}
-	job = r.buildCheckpointJob(ckpt, defaultCheckpointJobName)
-	assert.Equal(t, []string{"cuda-checkpoint", "--launch-job", "python3", "-m", "dynamo.vllm"}, job.Spec.Template.Spec.Containers[0].Command)
+	job, err = checkpointjob.BuildCheckpointJob(r.Config, ckpt, defaultCheckpointJobName)
+	require.NoError(t, err)
+	assert.Equal(t, []string{"cuda-checkpoint"}, job.Spec.Template.Spec.Containers[0].Command)
+	assert.Equal(t, []string{"--launch-job", "python3", "-m", "dynamo.vllm"}, job.Spec.Template.Spec.Containers[0].Args)
 }
 
 func TestBuildCheckpointJobInjectsStandardEnvVars(t *testing.T) {
@@ -274,7 +273,8 @@ func TestBuildCheckpointJobInjectsStandardEnvVars(t *testing.T) {
 
 	customShmSize := resource.MustParse("16Gi")
 	ckpt.Spec.Job.SharedMemory = &nvidiacomv1alpha1.SharedMemorySpec{Size: customShmSize}
-	job := r.buildCheckpointJob(ckpt, defaultCheckpointJobName)
+	job, err := checkpointjob.BuildCheckpointJob(r.Config, ckpt, defaultCheckpointJobName)
+	require.NoError(t, err)
 	foundCustomShmVolume := false
 	for _, v := range job.Spec.Template.Spec.Volumes {
 		if v.Name == consts.KubeValueNameSharedMemory {
@@ -326,7 +326,7 @@ func TestCheckpointReconciler_Reconcile(t *testing.T) {
 		assert.Equal(t, nvidiacomv1alpha1.DynamoCheckpointPhasePending, updated.Status.Phase)
 		assert.Equal(t, testHash, updated.Status.IdentityHash)
 		assert.Empty(t, updated.Status.Message)
-		assert.Equal(t, testHash, updated.Labels[consts.KubeLabelCheckpointHash])
+		assert.Equal(t, testHash, updated.Labels[consts.KubeLabelCheckpointID])
 	})
 
 	t.Run("Ready phase is a no-op", func(t *testing.T) {
@@ -352,7 +352,7 @@ func TestCheckpointReconciler_Reconcile(t *testing.T) {
 
 		updated := &nvidiacomv1alpha1.DynamoCheckpoint{}
 		require.NoError(t, r.Get(ctx, types.NamespacedName{Name: friendlyCheckpointName, Namespace: testNamespace}, updated))
-		assert.Equal(t, testHash, updated.Labels[consts.KubeLabelCheckpointHash])
+		assert.Equal(t, testHash, updated.Labels[consts.KubeLabelCheckpointID])
 		assert.Equal(t, testHash, updated.Status.IdentityHash)
 	})
 
@@ -375,7 +375,6 @@ func TestCheckpointReconciler_Reconcile(t *testing.T) {
 		ckpt := makeTestCheckpoint(nvidiacomv1alpha1.DynamoCheckpointPhaseReady)
 		ckpt.Status.IdentityHash = testHash
 		ckpt.Status.JobName = defaultCheckpointJobName
-		ckpt.Status.Location = "/checkpoints/" + testHash + "/versions/" + consts.DefaultCheckpointArtifactVersion
 		ckpt.Annotations = map[string]string{consts.KubeAnnotationCheckpointArtifactVersion: "2"}
 		r := makeCheckpointReconciler(s, ckpt)
 
@@ -388,7 +387,6 @@ func TestCheckpointReconciler_Reconcile(t *testing.T) {
 		require.NoError(t, r.Get(ctx, types.NamespacedName{Name: ckpt.Name, Namespace: testNamespace}, updated))
 		assert.Equal(t, nvidiacomv1alpha1.DynamoCheckpointPhaseCreating, updated.Status.Phase)
 		assert.Equal(t, "checkpoint-job-"+testHash+"-2", updated.Status.JobName)
-		assert.Equal(t, "/checkpoints/"+testHash+"/versions/2", updated.Status.Location)
 	})
 
 	t.Run("duplicate identity hash is rejected even with a readable name", func(t *testing.T) {
@@ -431,13 +429,11 @@ func TestCheckpointReconciler_HandleCreating(t *testing.T) {
 
 	t.Run("succeeded job transitions to Ready", func(t *testing.T) {
 		ckpt := makeCreatingCkpt(testHash, defaultCheckpointJobName)
-		ckpt.Status.Location = "/checkpoints/" + testHash + "/versions/" + consts.DefaultCheckpointArtifactVersion
-		ckpt.Status.StorageType = "pvc"
 		job := &batchv1.Job{
 			ObjectMeta: metav1.ObjectMeta{
 				Name:        defaultCheckpointJobName,
 				Namespace:   testNamespace,
-				Annotations: map[string]string{checkpointStatusAnnotation: checkpointStatusCompleted},
+				Annotations: map[string]string{snapshotprotocol.CheckpointStatusAnnotation: snapshotprotocol.CheckpointStatusCompleted},
 			},
 			Status: batchv1.JobStatus{
 				Succeeded: 1,
@@ -454,8 +450,6 @@ func TestCheckpointReconciler_HandleCreating(t *testing.T) {
 		updated := &nvidiacomv1alpha1.DynamoCheckpoint{}
 		require.NoError(t, r.Get(ctx, types.NamespacedName{Name: testHash, Namespace: testNamespace}, updated))
 		assert.Equal(t, nvidiacomv1alpha1.DynamoCheckpointPhaseReady, updated.Status.Phase)
-		assert.Equal(t, "/checkpoints/"+testHash+"/versions/"+consts.DefaultCheckpointArtifactVersion, updated.Status.Location)
-		assert.Equal(t, nvidiacomv1alpha1.DynamoCheckpointStorageType("pvc"), updated.Status.StorageType)
 		assert.NotNil(t, updated.Status.CreatedAt)
 	})
 
@@ -531,7 +525,7 @@ func TestCheckpointReconciler_HandleCreating(t *testing.T) {
 			ObjectMeta: metav1.ObjectMeta{
 				Name:        "job-agent-failed",
 				Namespace:   testNamespace,
-				Annotations: map[string]string{checkpointStatusAnnotation: checkpointStatusFailed},
+				Annotations: map[string]string{snapshotprotocol.CheckpointStatusAnnotation: snapshotprotocol.CheckpointStatusFailed},
 			},
 			Status: batchv1.JobStatus{
 				Succeeded: 1,
@@ -557,7 +551,7 @@ func TestCheckpointReconciler_HandleCreating(t *testing.T) {
 			ObjectMeta: metav1.ObjectMeta{
 				Name:        "job-running-agent-failed",
 				Namespace:   testNamespace,
-				Annotations: map[string]string{checkpointStatusAnnotation: checkpointStatusFailed},
+				Annotations: map[string]string{snapshotprotocol.CheckpointStatusAnnotation: snapshotprotocol.CheckpointStatusFailed},
 			},
 			Status: batchv1.JobStatus{Active: 1},
 		}
@@ -590,14 +584,12 @@ func TestCheckpointReconciler_HandleCreating(t *testing.T) {
 
 	t.Run("in-flight version changes do not relabel the running job's artifact", func(t *testing.T) {
 		ckpt := makeCreatingCkpt(testHash, defaultCheckpointJobName)
-		ckpt.Status.Location = "/checkpoints/" + testHash + "/versions/" + consts.DefaultCheckpointArtifactVersion
-		ckpt.Status.StorageType = "pvc"
 		ckpt.Annotations = map[string]string{consts.KubeAnnotationCheckpointArtifactVersion: "2"}
 		job := &batchv1.Job{
 			ObjectMeta: metav1.ObjectMeta{
 				Name:        defaultCheckpointJobName,
 				Namespace:   testNamespace,
-				Annotations: map[string]string{checkpointStatusAnnotation: checkpointStatusCompleted},
+				Annotations: map[string]string{snapshotprotocol.CheckpointStatusAnnotation: snapshotprotocol.CheckpointStatusCompleted},
 			},
 			Status: batchv1.JobStatus{
 				Succeeded: 1,
@@ -614,7 +606,6 @@ func TestCheckpointReconciler_HandleCreating(t *testing.T) {
 		updated := &nvidiacomv1alpha1.DynamoCheckpoint{}
 		require.NoError(t, r.Get(ctx, types.NamespacedName{Name: testHash, Namespace: testNamespace}, updated))
 		assert.Equal(t, nvidiacomv1alpha1.DynamoCheckpointPhaseReady, updated.Status.Phase)
-		assert.Equal(t, "/checkpoints/"+testHash+"/versions/"+consts.DefaultCheckpointArtifactVersion, updated.Status.Location)
 	})
 
 	t.Run("succeeded count without complete condition keeps Creating phase", func(t *testing.T) {

deploy/operator/internal/controller/dynamocomponentdeployment_controller.go

@@ -80,6 +80,7 @@ type DynamoComponentDeploymentReconciler struct {
 // +kubebuilder:rbac:groups=nvidia.com,resources=dynamocomponentdeployments/status,verbs=get;update;patch
 // +kubebuilder:rbac:groups=nvidia.com,resources=dynamocomponentdeployments/finalizers,verbs=update
 // +kubebuilder:rbac:groups=nvidia.com,resources=dynamocheckpoints,verbs=get;list
+// +kubebuilder:rbac:groups=apps,resources=daemonsets,verbs=get;list;watch
 
 //+kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch;create;update;patch;delete
 //+kubebuilder:rbac:groups=core,resources=pods,verbs=get;list;watch
@@ -1041,7 +1042,9 @@ func (r *DynamoComponentDeploymentReconciler) generatePodTemplateSpec(ctx contex
 
 	// Resolve checkpoint for this component
 	var checkpointInfo *checkpoint.CheckpointInfo
-	if opt.dynamoComponentDeployment.Spec.Checkpoint != nil && opt.dynamoComponentDeployment.Spec.Checkpoint.Enabled {
+	if r.Config.Checkpoint.Enabled &&
+		opt.dynamoComponentDeployment.Spec.Checkpoint != nil &&
+		opt.dynamoComponentDeployment.Spec.Checkpoint.Enabled {
 		info, err := checkpoint.ResolveCheckpointForService(ctx, r.Client, opt.dynamoComponentDeployment.Namespace, opt.dynamoComponentDeployment.Spec.Checkpoint)
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to resolve checkpoint")
@@ -1054,6 +1057,17 @@ func (r *DynamoComponentDeploymentReconciler) generatePodTemplateSpec(ctx contex
 		err = errors.Wrap(err, "failed to generate base pod spec")
 		return nil, err
 	}
+	if r.Config.Checkpoint.Enabled {
+		if err := checkpoint.InjectCheckpointIntoPodSpec(
+			ctx,
+			r.Client,
+			opt.dynamoComponentDeployment.Namespace,
+			podSpec,
+			checkpointInfo,
+		); err != nil {
+			return nil, errors.Wrap(err, "failed to inject checkpoint config")
+		}
+	}
 
 	// Ensure we have at least one container (the main container should be there from GenerateBasePodSpec)
 	if len(podSpec.Containers) == 0 {

deploy/operator/internal/controller/dynamocomponentdeployment_controller_test.go

@@ -29,6 +29,7 @@ import (
 	commonconsts "github.com/ai-dynamo/dynamo/deploy/operator/internal/consts"
 	"github.com/ai-dynamo/dynamo/deploy/operator/internal/controller_common"
 	"github.com/ai-dynamo/dynamo/deploy/operator/internal/dynamo"
+	snapshotprotocol "github.com/ai-dynamo/dynamo/deploy/snapshot/protocol"
 	"github.com/google/go-cmp/cmp"
 	"github.com/onsi/gomega"
 	"github.com/onsi/gomega/format"
@@ -1255,6 +1256,40 @@ func TestDynamoComponentDeploymentReconciler_generatePodTemplateSpec_RestoreLabe
 	if err := corev1.AddToScheme(s); err != nil {
 		t.Fatalf("Failed to add corev1 to scheme: %v", err)
 	}
+	if err := appsv1.AddToScheme(s); err != nil {
+		t.Fatalf("Failed to add appsv1 to scheme: %v", err)
+	}
+
+	snapshotAgentDaemonSet := &appsv1.DaemonSet{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "snapshot-agent",
+			Namespace: "default",
+			Labels: map[string]string{
+				snapshotprotocol.SnapshotAgentLabelKey: snapshotprotocol.SnapshotAgentLabelValue,
+			},
+		},
+		Spec: appsv1.DaemonSetSpec{
+			Template: corev1.PodTemplateSpec{
+				Spec: corev1.PodSpec{
+					Containers: []corev1.Container{{
+						Name: snapshotprotocol.SnapshotAgentContainerName,
+						VolumeMounts: []corev1.VolumeMount{{
+							Name:      "checkpoints",
+							MountPath: "/checkpoints",
+						}},
+					}},
+					Volumes: []corev1.Volume{{
+						Name: "checkpoints",
+						VolumeSource: corev1.VolumeSource{
+							PersistentVolumeClaim: &corev1.PersistentVolumeClaimVolumeSource{
+								ClaimName: "snapshot-pvc",
+							},
+						},
+					}},
+				},
+			},
+		},
+	}
 
 	makeDCD := func(checkpointRef string) *v1alpha1.DynamoComponentDeployment {
 		return &v1alpha1.DynamoComponentDeployment{
@@ -1291,6 +1326,7 @@ func TestDynamoComponentDeploymentReconciler_generatePodTemplateSpec_RestoreLabe
 	}
 
 	makeReconciler := func(objs ...client.Object) *DynamoComponentDeploymentReconciler {
+		objs = append(objs, snapshotAgentDaemonSet.DeepCopy())
 		return &DynamoComponentDeploymentReconciler{
 			Client: fake.NewClientBuilder().
 				WithScheme(s).
@@ -1299,13 +1335,6 @@ func TestDynamoComponentDeploymentReconciler_generatePodTemplateSpec_RestoreLabe
 			Config: &configv1alpha1.OperatorConfiguration{
 				Checkpoint: configv1alpha1.CheckpointConfiguration{
 					Enabled: true,
-					Storage: configv1alpha1.CheckpointStorageConfiguration{
-						Type: configv1alpha1.CheckpointStorageTypePVC,
-						PVC: configv1alpha1.CheckpointPVCConfig{
-							PVCName:  "snapshot-pvc",
-							BasePath: "/checkpoints",
-						},
-					},
 				},
 			},
 		}
@@ -1342,8 +1371,8 @@ func TestDynamoComponentDeploymentReconciler_generatePodTemplateSpec_RestoreLabe
 		if got := podTemplateSpec.Labels[commonconsts.KubeLabelIsRestoreTarget]; got != commonconsts.KubeLabelValueTrue {
 			t.Fatalf("expected %s label to be true, got %q", commonconsts.KubeLabelIsRestoreTarget, got)
 		}
-		if got := podTemplateSpec.Labels[commonconsts.KubeLabelCheckpointHash]; got != checkpointName {
-			t.Fatalf("expected %s to be checkpoint hash, got %q", commonconsts.KubeLabelCheckpointHash, got)
+		if got := podTemplateSpec.Labels[commonconsts.KubeLabelCheckpointID]; got != checkpointName {
+			t.Fatalf("expected %s to be checkpoint id, got %q", commonconsts.KubeLabelCheckpointID, got)
 		}
 	})
 
@@ -1428,8 +1457,8 @@ func TestDynamoComponentDeploymentReconciler_generatePodTemplateSpec_RestoreLabe
 		if _, ok := podTemplateSpec.Labels[commonconsts.KubeLabelIsRestoreTarget]; ok {
 			t.Fatalf("did not expect %s label when checkpoint is not ready", commonconsts.KubeLabelIsRestoreTarget)
 		}
-		if _, ok := podTemplateSpec.Labels[commonconsts.KubeLabelCheckpointHash]; ok {
-			t.Fatalf("did not expect %s label when checkpoint is not ready", commonconsts.KubeLabelCheckpointHash)
+		if _, ok := podTemplateSpec.Labels[commonconsts.KubeLabelCheckpointID]; ok {
+			t.Fatalf("did not expect %s label when checkpoint is not ready", commonconsts.KubeLabelCheckpointID)
 		}
 	})
 }
@@ -1481,6 +1510,36 @@ func TestDynamoComponentDeploymentReconciler_generateDeployment_RestoreStrategy(
 	}
 
 	makeReconciler := func(objs ...client.Object) *DynamoComponentDeploymentReconciler {
+		objs = append(objs, &appsv1.DaemonSet{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "snapshot-agent",
+				Namespace: "default",
+				Labels: map[string]string{
+					snapshotprotocol.SnapshotAgentLabelKey: snapshotprotocol.SnapshotAgentLabelValue,
+				},
+			},
+			Spec: appsv1.DaemonSetSpec{
+				Template: corev1.PodTemplateSpec{
+					Spec: corev1.PodSpec{
+						Containers: []corev1.Container{{
+							Name: snapshotprotocol.SnapshotAgentContainerName,
+							VolumeMounts: []corev1.VolumeMount{{
+								Name:      "checkpoints",
+								MountPath: "/checkpoints",
+							}},
+						}},
+						Volumes: []corev1.Volume{{
+							Name: "checkpoints",
+							VolumeSource: corev1.VolumeSource{
+								PersistentVolumeClaim: &corev1.PersistentVolumeClaimVolumeSource{
+									ClaimName: "snapshot-pvc",
+								},
+							},
+						}},
+					},
+				},
+			},
+		})
 		return &DynamoComponentDeploymentReconciler{
 			Client: fake.NewClientBuilder().
 				WithScheme(s).
@@ -1489,13 +1548,6 @@ func TestDynamoComponentDeploymentReconciler_generateDeployment_RestoreStrategy(
 			Config: &configv1alpha1.OperatorConfiguration{
 				Checkpoint: configv1alpha1.CheckpointConfiguration{
 					Enabled: true,
-					Storage: configv1alpha1.CheckpointStorageConfiguration{
-						Type: configv1alpha1.CheckpointStorageTypePVC,
-						PVC: configv1alpha1.CheckpointPVCConfig{
-							PVCName:  "snapshot-pvc",
-							BasePath: "/checkpoints",
-						},
-					},
 				},
 			},
 		}

deploy/operator/internal/controller/dynamographdeployment_controller.go

@@ -91,6 +91,7 @@ type DynamoGraphDeploymentReconciler struct {
 // +kubebuilder:rbac:groups=scheduling.run.ai,resources=queues,verbs=get;list
 // +kubebuilder:rbac:groups=inference.networking.k8s.io,resources=inferencepools,verbs=get;list;watch;create;update;patch;delete
 // +kubebuilder:rbac:groups=core,resources=pods,verbs=get;list;watch
+// +kubebuilder:rbac:groups=apps,resources=daemonsets,verbs=get;list;watch
 
 // Reconcile is part of the main kubernetes reconciliation loop which aims to
 // move the current state of the cluster closer to the desired state.
@@ -547,7 +548,7 @@ func (r *DynamoGraphDeploymentReconciler) reconcileGrovePodCliqueSet(ctx context
 	}
 
 	// generate the dynamoComponentsDeployments from the config
-	grovePodCliqueSet, err := dynamo.GenerateGrovePodCliqueSet(ctx, dynamoDeployment, r.Config, r.RuntimeConfig, r.DockerSecretRetriever, restartState, existingRestartAnnotations, checkpointInfos)
+	grovePodCliqueSet, err := dynamo.GenerateGrovePodCliqueSet(ctx, dynamoDeployment, r.Config, r.RuntimeConfig, r.Client, r.DockerSecretRetriever, restartState, existingRestartAnnotations, checkpointInfos)
 	if err != nil {
 		logger.Error(err, "failed to generate the Grove GangSet")
 		return nil, fmt.Errorf("failed to generate the Grove GangSet: %w", err)

deploy/operator/internal/dynamo/graph.go

@@ -43,6 +43,7 @@ import (
 	networkingv1beta1 "istio.io/client-go/pkg/apis/networking/v1beta1"
 	corev1 "k8s.io/api/core/v1"
 	networkingv1 "k8s.io/api/networking/v1"
+	ctrlclient "sigs.k8s.io/controller-runtime/pkg/client"
 )
 
 // RestartState holds the restart state for DGD services.
@@ -1165,22 +1166,6 @@ func GenerateBasePodSpec(
 
 	backend.UpdatePodSpec(&podSpec, numberOfNodes, role, component, serviceName, multinodeDeployer)
 
-	// Inject checkpoint configuration if enabled
-	// This handles ALL checkpoint-related modifications:
-	// - Command/Args transformation (moves Command to Args to respect image ENTRYPOINT)
-	// - Security context (hostIPC, privileged mode)
-	// - Restore/checkpoint pod metadata (labels/annotations)
-	// - Storage configuration (volumes, mounts)
-	// CheckpointInfo should have been resolved by ResolveCheckpointForService before calling this function
-	// Checkpoint config comes from the operator's controller config (Helm values)
-	var checkpointConfig *configv1alpha1.CheckpointConfiguration
-	if operatorConfig.Checkpoint.Enabled {
-		checkpointConfig = &operatorConfig.Checkpoint
-	}
-	if err := checkpoint.InjectCheckpointIntoPodSpec(&podSpec, checkpointInfo, checkpointConfig); err != nil {
-		return nil, fmt.Errorf("failed to inject checkpoint config: %w", err)
-	}
-
 	// Inject auto-generated frontend sidecar if configured
 	if component.FrontendSidecar != nil {
 		sidecar, err := generateFrontendSidecar(component.FrontendSidecar, componentContext, operatorConfig)
@@ -1359,6 +1344,7 @@ func GenerateGrovePodCliqueSet(
 	dynamoDeployment *v1alpha1.DynamoGraphDeployment,
 	operatorConfig *configv1alpha1.OperatorConfiguration,
 	runtimeConfig *controller_common.RuntimeConfig,
+	kubeClient ctrlclient.Reader,
 	secretsRetriever SecretsRetriever,
 	restartState *RestartState,
 	existingRestartAnnotations map[string]string,
@@ -1438,6 +1424,17 @@ func GenerateGrovePodCliqueSet(
 			if err != nil {
 				return nil, fmt.Errorf("failed to generate podSpec for role %s: %w", r.Name, err)
 			}
+			if operatorConfig.Checkpoint.Enabled {
+				if err := checkpoint.InjectCheckpointIntoPodSpec(
+					ctx,
+					kubeClient,
+					dynamoDeployment.Namespace,
+					podSpec,
+					checkpointInfo,
+				); err != nil {
+					return nil, fmt.Errorf("failed to inject checkpoint config for role %s: %w", r.Name, err)
+				}
+			}
 
 			clique := &grovev1alpha1.PodCliqueTemplateSpec{
 				Name: strings.ToLower(r.Name),

deploy/operator/internal/dynamo/graph_test.go

@@ -3787,7 +3787,7 @@ func TestGenerateGrovePodCliqueSet(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			got, err := GenerateGrovePodCliqueSet(tt.args.ctx, tt.args.dynamoDeployment, tt.args.controllerConfig, &controller_common.RuntimeConfig{}, nil, nil, nil, nil)
+			got, err := GenerateGrovePodCliqueSet(tt.args.ctx, tt.args.dynamoDeployment, tt.args.controllerConfig, &controller_common.RuntimeConfig{}, nil, nil, nil, nil, nil)
 			if (err != nil) != tt.wantErr {
 				t.Errorf("GenerateGrovePodCliqueSet() error = %v, wantErr %v", err, tt.wantErr)
 				return
@@ -3848,7 +3848,7 @@ func Test_GeneratePodCliqueSetGlobalDynamoNamespace(t *testing.T) {
 		},
 	}
 
-	got, err := GenerateGrovePodCliqueSet(context.Background(), dynamoDeployment, &configv1alpha1.OperatorConfiguration{}, &controller_common.RuntimeConfig{}, nil, nil, nil, nil)
+	got, err := GenerateGrovePodCliqueSet(context.Background(), dynamoDeployment, &configv1alpha1.OperatorConfiguration{}, &controller_common.RuntimeConfig{}, nil, nil, nil, nil, nil)
 	if !assert.NoError(t, err) {
 		return
 	}
@@ -4953,7 +4953,7 @@ func TestGenerateGrovePodCliqueSet_StartsAfterDependencies(t *testing.T) {
 				},
 			}
 
-			got, err := GenerateGrovePodCliqueSet(context.Background(), dynamoDeployment, controllerConfig, &controller_common.RuntimeConfig{}, secretsRetriever, nil, nil, nil)
+			got, err := GenerateGrovePodCliqueSet(context.Background(), dynamoDeployment, controllerConfig, &controller_common.RuntimeConfig{}, nil, secretsRetriever, nil, nil, nil)
 			if err != nil {
 				t.Errorf("GenerateGrovePodCliqueSet() error = %v", err)
 				return
@@ -6783,7 +6783,7 @@ func TestGenerateGrovePodCliqueSet_RestartAnnotations(t *testing.T) {
 				},
 			}
 
-			got, err := GenerateGrovePodCliqueSet(context.Background(), dgd, controllerConfig, &controller_common.RuntimeConfig{}, nil, tt.restartState, nil, nil)
+			got, err := GenerateGrovePodCliqueSet(context.Background(), dgd, controllerConfig, &controller_common.RuntimeConfig{}, nil, nil, tt.restartState, nil, nil)
 			if err != nil {
 				t.Fatalf("GenerateGrovePodCliqueSet() error = %v", err)
 			}
@@ -6865,7 +6865,7 @@ func TestGenerateLabels_RemovesStaleRestoreLabelsWhenCheckpointNotReady(t *testi
 			ExtraPodMetadata: &v1alpha1.ExtraPodMetadata{
 				Labels: map[string]string{
 					"extra-label":                      "keep-too",
-					commonconsts.KubeLabelCheckpointHash: "stale-hash",
+					commonconsts.KubeLabelCheckpointID: "stale-hash",
 				},
 			},
 		},
@@ -6884,7 +6884,7 @@ func TestGenerateLabels_RemovesStaleRestoreLabelsWhenCheckpointNotReady(t *testi
 	assert.Equal(t, "keep", labels["user-label"])
 	assert.Equal(t, "keep-too", labels["extra-label"])
 	_, hasRestoreTarget := labels[commonconsts.KubeLabelIsRestoreTarget]
-	_, hasCheckpointHash := labels[commonconsts.KubeLabelCheckpointHash]
+	_, hasCheckpointHash := labels[commonconsts.KubeLabelCheckpointID]
 	assert.False(t, hasRestoreTarget)
 	assert.False(t, hasCheckpointHash)
 }
@@ -6899,7 +6899,7 @@ func TestGenerateLabels_OverwritesStaleRestoreLabelsWhenCheckpointReady(t *testi
 			},
 			ExtraPodMetadata: &v1alpha1.ExtraPodMetadata{
 				Labels: map[string]string{
-					commonconsts.KubeLabelCheckpointHash: "stale-hash",
+					commonconsts.KubeLabelCheckpointID: "stale-hash",
 				},
 			},
 		},
@@ -6916,7 +6916,7 @@ func TestGenerateLabels_OverwritesStaleRestoreLabelsWhenCheckpointReady(t *testi
 		Hash:    "resolved-hash",
 	})
 	assert.Equal(t, commonconsts.KubeLabelValueTrue, labels[commonconsts.KubeLabelIsRestoreTarget])
-	assert.Equal(t, "resolved-hash", labels[commonconsts.KubeLabelCheckpointHash])
+	assert.Equal(t, "resolved-hash", labels[commonconsts.KubeLabelCheckpointID])
 }
 
 func TestGenerateLabels_ReassertsRestoreIdentityLabelsAfterMetadataMerge(t *testing.T) {
@@ -7459,7 +7459,7 @@ func TestGenerateGrovePodCliqueSet_SpecMetadataPropagation(t *testing.T) {
 		},
 	}
 
-	pcs, err := GenerateGrovePodCliqueSet(context.Background(), dgd, &configv1alpha1.OperatorConfiguration{}, &controller_common.RuntimeConfig{}, nil, nil, nil, nil)
+	pcs, err := GenerateGrovePodCliqueSet(context.Background(), dgd, &configv1alpha1.OperatorConfiguration{}, &controller_common.RuntimeConfig{}, nil, nil, nil, nil, nil)
 	require.NoError(t, err)
 
 	// PCS object-level metadata
@@ -7627,6 +7627,7 @@ func TestGenerateGrovePodCliqueSet_TopologyConstraints(t *testing.T) {
 				tt.deployment,
 				operatorConfig,
 				&controller_common.RuntimeConfig{},
+				nil,
 				secretsRetriever,
 				&RestartState{},
 				nil,

deploy/snapshot/cmd/agent/config.go

@@ -8,7 +8,7 @@ import (
 
 	"gopkg.in/yaml.v3"
 
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/types"
+	"github.com/ai-dynamo/dynamo/deploy/snapshot/internal/types"
 )
 
 // ConfigMapPath is the default path where the ConfigMap is mounted.

deploy/snapshot/cmd/agent/main.go

@@ -12,9 +12,9 @@ import (
 	"github.com/containerd/containerd"
 	"github.com/go-logr/logr"
 
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/common"
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/controller"
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/logging"
+	"github.com/ai-dynamo/dynamo/deploy/snapshot/internal/controller"
+	"github.com/ai-dynamo/dynamo/deploy/snapshot/internal/logging"
+	snapshotruntime "github.com/ai-dynamo/dynamo/deploy/snapshot/internal/runtime"
 )
 
 func main() {
@@ -29,7 +29,7 @@ func main() {
 		fatal(agentLog, err, "Invalid configuration")
 	}
 
-	ctrd, err := containerd.New(common.ContainerdSocket)
+	ctrd, err := containerd.New(snapshotruntime.ContainerdSocket)
 	if err != nil {
 		fatal(agentLog, err, "Failed to connect to containerd")
 	}

deploy/snapshot/cmd/nsrestore/main.go

@@ -8,8 +8,8 @@ import (
 
 	"github.com/go-logr/logr"
 
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/executor"
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/logging"
+	"github.com/ai-dynamo/dynamo/deploy/snapshot/internal/executor"
+	"github.com/ai-dynamo/dynamo/deploy/snapshot/internal/logging"
 )
 
 func main() {

deploy/snapshot/cmd/snapshotctl/README.md

+# `snapshotctl`
+
+`snapshotctl` is a lower-level snapshot utility for developers and operators.
+It is not the primary Dynamo user workflow. The normal user-facing path is:
+
+```text
+DynamoCheckpoint CR -> operator -> snapshot-agent
+```
+
+Use `snapshotctl` when you want to exercise checkpoint or restore behavior
+directly from a worker pod manifest without going through the operator.
+
+## Requirements
+
+- the snapshot Helm chart must already be installed in the target namespace
+- a `snapshot-agent` DaemonSet must be running in that namespace
+- the namespace must already have the checkpoint PVC mounted by the agent
+
+## Manifest requirements
+
+`snapshotctl checkpoint --manifest ...` and `snapshotctl restore --manifest ...`
+accept a Kubernetes `Pod` manifest, not a Deployment or Job manifest.
+
+That pod manifest must:
+
+- describe the worker pod you want to checkpoint or restore
+- contain exactly one worker container
+- use the placeholder image for checkpoint-aware flows
+- match the runtime-relevant worker settings you care about preserving
+
+In practice, start from the real worker pod spec you would normally run, then
+keep only the pod-level fields needed to recreate that worker accurately.
+
+## Commands
+
+Checkpoint from a manifest:
+
+```bash
+snapshotctl checkpoint \
+  --manifest ./worker-pod.yaml \
+  --namespace ${NAMESPACE}
+```
+
+If `--checkpoint-id` is omitted, `snapshotctl` generates one.
+
+Restore by creating a new pod from a manifest:
+
+```bash
+snapshotctl restore \
+  --manifest ./worker-pod.yaml \
+  --namespace ${NAMESPACE} \
+  --checkpoint-id manual-snapshot-123
+```
+
+Restore an existing snapshot-compatible pod in place:
+
+```bash
+snapshotctl restore \
+  --pod existing-restore-target \
+  --namespace ${NAMESPACE} \
+  --checkpoint-id manual-snapshot-123
+```
+
+## Notes
+
+- `restore --pod` expects a pod that is already compatible with snapshot restore
+- `restore --manifest` creates a new restore target pod from the manifest you provide
+- `snapshotctl` is useful for debugging and lower-level validation, but it does
+  not replace the operator-managed checkpoint flow

deploy/snapshot/cmd/snapshotctl/checkpoint.go

+package main
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"time"
+
+	batchv1 "k8s.io/api/batch/v1"
+	corev1 "k8s.io/api/core/v1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/client-go/kubernetes"
+
+	snapshotprotocol "github.com/ai-dynamo/dynamo/deploy/snapshot/protocol"
+)
+
+const defaultGeneratedCheckpointIDPrefix = "manual-snapshot"
+
+type checkpointOptions struct {
+	ManifestPath                 string
+	Namespace                    string
+	KubeContext                  string
+	CheckpointID                 string
+	DisableCudaCheckpointJobFile bool
+	Timeout                      time.Duration
+}
+
+type result struct {
+	Name               string
+	Namespace          string
+	CheckpointID       string
+	CheckpointLocation string
+	CheckpointJob      string
+	RestorePod         string
+	Status             string
+}
+
+func runCheckpointFlow(ctx context.Context, opts checkpointOptions) (*result, error) {
+	if strings.TrimSpace(opts.ManifestPath) == "" {
+		return nil, fmt.Errorf("missing required flags: --manifest")
+	}
+	if opts.Timeout <= 0 {
+		return nil, fmt.Errorf("--timeout must be greater than zero")
+	}
+
+	pod, clientset, namespace, storage, err := loadRunContext(ctx, opts.ManifestPath, opts.Namespace, opts.KubeContext)
+	if err != nil {
+		return nil, err
+	}
+
+	checkpointID := strings.TrimSpace(opts.CheckpointID)
+	if checkpointID == "" {
+		checkpointID = fmt.Sprintf("%s-%d", defaultGeneratedCheckpointIDPrefix, time.Now().UTC().UnixNano())
+	}
+	resolvedStorage, err := snapshotprotocol.ResolveCheckpointStorage(checkpointID, "", snapshotprotocol.Storage{
+		Type:     snapshotprotocol.StorageTypePVC,
+		PVCName:  storage.PVCName,
+		BasePath: storage.BasePath,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	checkpointJobName := pod.Name + "-checkpoint"
+	job, err := snapshotprotocol.NewCheckpointJob(&corev1.PodTemplateSpec{
+		ObjectMeta: metav1.ObjectMeta{
+			Labels:      pod.Labels,
+			Annotations: pod.Annotations,
+		},
+		Spec: *pod.Spec.DeepCopy(),
+	}, snapshotprotocol.CheckpointJobOptions{
+		Namespace:       namespace,
+		CheckpointID:    checkpointID,
+		ArtifactVersion: snapshotprotocol.DefaultCheckpointArtifactVersion,
+		SeccompProfile:  snapshotprotocol.DefaultSeccompLocalhostProfile,
+		Name:            checkpointJobName,
+		WrapLaunchJob:   !opts.DisableCudaCheckpointJobFile,
+	})
+	if err != nil {
+		return nil, err
+	}
+	_, err = clientset.BatchV1().Jobs(namespace).Create(ctx, job, metav1.CreateOptions{})
+	if apierrors.IsAlreadyExists(err) {
+		return nil, fmt.Errorf("checkpoint job %s/%s already exists", namespace, checkpointJobName)
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	waitCtx, cancel := context.WithTimeout(ctx, opts.Timeout)
+	defer cancel()
+	status, err := waitForCheckpoint(waitCtx, clientset, namespace, checkpointJobName)
+	if err != nil {
+		return nil, err
+	}
+
+	return &result{
+		Name:               pod.Name,
+		Namespace:          namespace,
+		CheckpointID:       checkpointID,
+		CheckpointLocation: resolvedStorage.Location,
+		CheckpointJob:      checkpointJobName,
+		Status:             status,
+	}, nil
+}
+
+func waitForCheckpoint(ctx context.Context, clientset kubernetes.Interface, namespace string, jobName string) (string, error) {
+	var status string
+	if err := wait.PollUntilContextCancel(ctx, 2*time.Second, true, func(ctx context.Context) (bool, error) {
+		job, err := clientset.BatchV1().Jobs(namespace).Get(ctx, jobName, metav1.GetOptions{})
+		if err != nil {
+			if apierrors.IsNotFound(err) {
+				return false, nil
+			}
+			return false, fmt.Errorf("get checkpoint job %s/%s: %w", namespace, jobName, err)
+		}
+
+		status = strings.TrimSpace(job.Annotations[snapshotprotocol.CheckpointStatusAnnotation])
+		if status == snapshotprotocol.CheckpointStatusCompleted {
+			return true, nil
+		}
+		if status == snapshotprotocol.CheckpointStatusFailed {
+			return false, fmt.Errorf("checkpoint job %s/%s failed", namespace, jobName)
+		}
+		if job.Status.Failed > 0 {
+			return false, fmt.Errorf("checkpoint job %s/%s failed", namespace, jobName)
+		}
+		for _, condition := range job.Status.Conditions {
+			if condition.Status != corev1.ConditionTrue {
+				continue
+			}
+			if condition.Type == batchv1.JobFailed {
+				return false, fmt.Errorf("checkpoint job %s/%s failed: %s", namespace, jobName, strings.TrimSpace(condition.Message))
+			}
+		}
+		return false, nil
+	}); err != nil {
+		if !wait.Interrupted(err) {
+			return "", err
+		}
+
+		summaryCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		pods, err := clientset.CoreV1().Pods(namespace).List(summaryCtx, metav1.ListOptions{
+			LabelSelector: "batch.kubernetes.io/job-name=" + jobName,
+		})
+		summary := "no checkpoint pod created yet"
+		if err != nil {
+			summary = "unable to list checkpoint pod: " + err.Error()
+		} else if len(pods.Items) != 0 {
+			pod := pods.Items[0]
+			parts := []string{
+				fmt.Sprintf("job_status=%q", status),
+				fmt.Sprintf("pod=%s phase=%s", pod.Name, pod.Status.Phase),
+			}
+			for _, condition := range pod.Status.Conditions {
+				if condition.Status == corev1.ConditionTrue || condition.Status == corev1.ConditionFalse {
+					parts = append(parts, fmt.Sprintf("%s=%s", condition.Type, condition.Status))
+				}
+			}
+			for _, status := range pod.Status.ContainerStatuses {
+				if status.State.Waiting != nil {
+					parts = append(parts, fmt.Sprintf("container=%s waiting=%s", status.Name, status.State.Waiting.Reason))
+				}
+				if status.State.Terminated != nil {
+					parts = append(parts, fmt.Sprintf("container=%s terminated=%s", status.Name, status.State.Terminated.Reason))
+				}
+			}
+			summary = strings.Join(parts, " ")
+		}
+		return "", fmt.Errorf("checkpoint job %s/%s timed out: %s", namespace, jobName, summary)
+	}
+	return status, nil
+}

deploy/snapshot/cmd/snapshotctl/kube.go

+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/tools/clientcmd"
+	"sigs.k8s.io/yaml"
+
+	snapshotprotocol "github.com/ai-dynamo/dynamo/deploy/snapshot/protocol"
+)
+
+func loadRunContext(ctx context.Context, manifestPath string, namespaceOverride string, kubeContext string) (*corev1.Pod, kubernetes.Interface, string, snapshotprotocol.Storage, error) {
+	pod, err := loadPod(manifestPath)
+	if err != nil {
+		return nil, nil, "", snapshotprotocol.Storage{}, err
+	}
+
+	clientset, currentNamespace, err := loadClientset(kubeContext)
+	if err != nil {
+		return nil, nil, "", snapshotprotocol.Storage{}, err
+	}
+
+	namespace := currentNamespace
+	if namespace == "" {
+		namespace = corev1.NamespaceDefault
+	}
+	if pod.Namespace != "" {
+		namespace = pod.Namespace
+	}
+	if namespaceOverride != "" {
+		namespace = namespaceOverride
+	}
+
+	storage, err := discoverSnapshotStorage(ctx, clientset, namespace)
+	if err != nil {
+		return nil, nil, "", snapshotprotocol.Storage{}, err
+	}
+	return pod, clientset, namespace, storage, nil
+}
+
+func loadClientset(kubeContext string) (kubernetes.Interface, string, error) {
+	loadingRules := clientcmd.NewDefaultClientConfigLoadingRules()
+	clientConfig := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(loadingRules, &clientcmd.ConfigOverrides{
+		CurrentContext: strings.TrimSpace(kubeContext),
+	})
+	restConfig, err := clientConfig.ClientConfig()
+	if err != nil {
+		return nil, "", fmt.Errorf("load kubeconfig: %w", err)
+	}
+	restConfig.Timeout = 30 * time.Second
+
+	namespace, _, err := clientConfig.Namespace()
+	if err != nil {
+		return nil, "", fmt.Errorf("resolve current namespace: %w", err)
+	}
+	if strings.TrimSpace(namespace) == "" {
+		namespace = corev1.NamespaceDefault
+	}
+
+	clientset, err := kubernetes.NewForConfig(restConfig)
+	if err != nil {
+		return nil, "", fmt.Errorf("create kubernetes client: %w", err)
+	}
+	return clientset, namespace, nil
+}
+
+func discoverSnapshotStorage(ctx context.Context, clientset kubernetes.Interface, namespace string) (snapshotprotocol.Storage, error) {
+	daemonSets, err := clientset.AppsV1().DaemonSets(namespace).List(ctx, metav1.ListOptions{
+		LabelSelector: snapshotprotocol.SnapshotAgentLabelSelector,
+	})
+	if err != nil {
+		return snapshotprotocol.Storage{}, fmt.Errorf("list snapshot-agent daemonsets in %s: %w", namespace, err)
+	}
+
+	return snapshotprotocol.DiscoverStorageFromDaemonSets(namespace, daemonSets.Items)
+}
+
+func loadPod(manifestPath string) (*corev1.Pod, error) {
+	content, err := os.ReadFile(manifestPath)
+	if err != nil {
+		return nil, fmt.Errorf("read manifest %s: %w", manifestPath, err)
+	}
+
+	var pod corev1.Pod
+	if err := yaml.Unmarshal(content, &pod); err != nil {
+		return nil, fmt.Errorf("parse manifest %s: %w", manifestPath, err)
+	}
+	if kind := strings.TrimSpace(pod.Kind); kind != "" && kind != "Pod" {
+		return nil, fmt.Errorf("manifest %s is kind %q, expected Pod", manifestPath, kind)
+	}
+	if len(pod.Spec.Containers) != 1 {
+		return nil, fmt.Errorf(
+			"manifest %s has %d containers; snapshotctl requires exactly one worker container",
+			manifestPath,
+			len(pod.Spec.Containers),
+		)
+	}
+	if strings.TrimSpace(pod.Spec.Containers[0].Image) == "" {
+		return nil, fmt.Errorf("manifest %s: worker container image is required", manifestPath)
+	}
+	if strings.TrimSpace(pod.Name) == "" {
+		return nil, fmt.Errorf("manifest %s: metadata.name is required", manifestPath)
+	}
+
+	pod.Namespace = strings.TrimSpace(pod.Namespace)
+	return &pod, nil
+}

deploy/snapshot/cmd/snapshotctl/main.go

+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/ai-dynamo/dynamo/deploy/snapshot/internal/logging"
+)
+
+var snapshotctlLog = logging.ConfigureLogger("stderr").WithName("snapshotctl")
+
+func main() {
+	if err := run(os.Args[1:]); err != nil {
+		snapshotctlLog.Error(err, "snapshotctl failed")
+		os.Exit(1)
+	}
+}
+
+func run(args []string) error {
+	if len(args) == 0 {
+		printUsage()
+		return nil
+	}
+
+	switch args[0] {
+	case "checkpoint":
+		return runCheckpoint(args[1:])
+	case "restore":
+		return runRestore(args[1:])
+	case "help", "-h", "--help":
+		printUsage()
+		return nil
+	default:
+		return fmt.Errorf("unknown subcommand %q", args[0])
+	}
+}
+
+func runCheckpoint(args []string) error {
+	flags := flag.NewFlagSet("checkpoint", flag.ContinueOnError)
+	flags.SetOutput(os.Stderr)
+
+	manifest := flags.String("manifest", "", "Path to a worker Pod manifest")
+	namespace := flags.String("namespace", "", "Namespace override; defaults to the manifest namespace or current kube context namespace")
+	kubeContext := flags.String("kube-context", "", "Kubernetes context override")
+	checkpointID := flags.String("checkpoint-id", "", "Explicit checkpoint ID; defaults to a generated value")
+	disableCudaCheckpointJobFile := flags.Bool("disable-cuda-checkpoint-job-file", false, "Preserve the manifest command instead of wrapping it with cuda-checkpoint --launch-job")
+	timeout := flags.Duration("timeout", 45*time.Minute, "Maximum time to wait for checkpoint completion")
+
+	if err := flags.Parse(args); err != nil {
+		return err
+	}
+	if len(flags.Args()) != 0 {
+		return fmt.Errorf("unexpected arguments: %v", flags.Args())
+	}
+	if *manifest == "" {
+		return fmt.Errorf("--manifest is required")
+	}
+
+	snapshotctlLog.Info("Running checkpoint", "manifest", *manifest, "namespace", *namespace)
+	result, err := runCheckpointFlow(context.Background(), checkpointOptions{
+		ManifestPath:                 *manifest,
+		Namespace:                    *namespace,
+		KubeContext:                  *kubeContext,
+		CheckpointID:                 *checkpointID,
+		DisableCudaCheckpointJobFile: *disableCudaCheckpointJobFile,
+		Timeout:                      *timeout,
+	})
+	if err != nil {
+		return err
+	}
+	snapshotctlLog.Info("Checkpoint completed", "job", result.CheckpointJob, "checkpoint_id", result.CheckpointID)
+
+	fmt.Printf("status=%s\n", result.Status)
+	fmt.Printf("namespace=%s\n", result.Namespace)
+	fmt.Printf("name=%s\n", result.Name)
+	fmt.Printf("checkpoint_job=%s\n", result.CheckpointJob)
+	fmt.Printf("checkpoint_id=%s\n", result.CheckpointID)
+	fmt.Printf("checkpoint_location=%s\n", result.CheckpointLocation)
+	return nil
+}
+
+func runRestore(args []string) error {
+	flags := flag.NewFlagSet("restore", flag.ContinueOnError)
+	flags.SetOutput(os.Stderr)
+
+	manifest := flags.String("manifest", "", "Path to a worker Pod manifest used to create a new restore pod")
+	podName := flags.String("pod", "", "Existing restore target pod name")
+	namespace := flags.String("namespace", "", "Namespace override; defaults to the manifest namespace or current kube context namespace")
+	kubeContext := flags.String("kube-context", "", "Kubernetes context override")
+	checkpointID := flags.String("checkpoint-id", "", "Checkpoint ID to restore")
+	timeout := flags.Duration("timeout", 45*time.Minute, "Maximum time to wait for restore completion")
+
+	if err := flags.Parse(args); err != nil {
+		return err
+	}
+	if len(flags.Args()) != 0 {
+		return fmt.Errorf("unexpected arguments: %v", flags.Args())
+	}
+	if (*manifest == "") == (*podName == "") {
+		return fmt.Errorf("must specify exactly one of --manifest or --pod")
+	}
+
+	snapshotctlLog.Info("Running restore", "manifest", *manifest, "pod", *podName, "namespace", *namespace, "checkpoint_id", *checkpointID)
+	result, err := runRestoreFlow(context.Background(), restoreOptions{
+		ManifestPath: *manifest,
+		PodName:      *podName,
+		Namespace:    *namespace,
+		KubeContext:  *kubeContext,
+		CheckpointID: *checkpointID,
+		Timeout:      *timeout,
+	})
+	if err != nil {
+		return err
+	}
+	snapshotctlLog.Info("Restore completed", "pod", result.RestorePod, "checkpoint_id", result.CheckpointID)
+
+	fmt.Printf("status=%s\n", result.Status)
+	fmt.Printf("namespace=%s\n", result.Namespace)
+	fmt.Printf("name=%s\n", result.Name)
+	fmt.Printf("restore_pod=%s\n", result.RestorePod)
+	fmt.Printf("checkpoint_id=%s\n", result.CheckpointID)
+	fmt.Printf("checkpoint_location=%s\n", result.CheckpointLocation)
+	return nil
+}
+
+func printUsage() {
+	fmt.Fprintf(os.Stderr, `snapshotctl runs snapshot checkpoint and restore flows from a worker Pod manifest.
+
+Subcommands:
+  checkpoint
+  restore
+
+Examples:
+  snapshotctl checkpoint --manifest /tmp/vllm-worker-pod.yaml
+  snapshotctl restore --manifest /tmp/sglang-worker-pod.yaml --checkpoint-id manual-snapshot-123
+  snapshotctl restore --pod existing-restore-target --checkpoint-id manual-snapshot-123
+`)
+}

deploy/snapshot/cmd/snapshotctl/restore.go

+package main
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"strings"
+	"time"
+
+	corev1 "k8s.io/api/core/v1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/client-go/kubernetes"
+
+	snapshotprotocol "github.com/ai-dynamo/dynamo/deploy/snapshot/protocol"
+)
+
+type restoreOptions struct {
+	ManifestPath string
+	PodName      string
+	Namespace    string
+	KubeContext  string
+	CheckpointID string
+	Timeout      time.Duration
+}
+
+func runRestoreFlow(ctx context.Context, opts restoreOptions) (*result, error) {
+	createPodFromManifest := strings.TrimSpace(opts.ManifestPath) != ""
+	targetExistingPod := strings.TrimSpace(opts.PodName) != ""
+	if createPodFromManifest == targetExistingPod {
+		return nil, fmt.Errorf("restore requires exactly one of --manifest or --pod")
+	}
+	if strings.TrimSpace(opts.CheckpointID) == "" {
+		return nil, fmt.Errorf("missing required flags: --checkpoint-id")
+	}
+	if opts.Timeout <= 0 {
+		return nil, fmt.Errorf("--timeout must be greater than zero")
+	}
+
+	checkpointID := strings.TrimSpace(opts.CheckpointID)
+	clientset, currentNamespace, err := loadClientset(opts.KubeContext)
+	if err != nil {
+		return nil, err
+	}
+	namespace := currentNamespace
+	if namespace == "" {
+		namespace = corev1.NamespaceDefault
+	}
+	if strings.TrimSpace(opts.Namespace) != "" {
+		namespace = strings.TrimSpace(opts.Namespace)
+	}
+
+	podName := strings.TrimSpace(opts.PodName)
+	pod := &corev1.Pod{}
+	if createPodFromManifest {
+		pod, err = loadPod(opts.ManifestPath)
+		if err != nil {
+			return nil, err
+		}
+		if strings.TrimSpace(pod.Namespace) != "" && strings.TrimSpace(opts.Namespace) == "" {
+			namespace = strings.TrimSpace(pod.Namespace)
+		}
+		podName = pod.Name
+	}
+
+	storage, err := discoverSnapshotStorage(ctx, clientset, namespace)
+	if err != nil {
+		return nil, err
+	}
+	resolvedStorage, err := snapshotprotocol.ResolveRestoreStorage(checkpointID, snapshotprotocol.DefaultCheckpointArtifactVersion, "", snapshotprotocol.Storage{
+		Type:     snapshotprotocol.StorageTypePVC,
+		PVCName:  storage.PVCName,
+		BasePath: storage.BasePath,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	if createPodFromManifest {
+		restorePod := snapshotprotocol.NewRestorePod(&corev1.Pod{
+			TypeMeta: metav1.TypeMeta{APIVersion: "v1", Kind: "Pod"},
+			ObjectMeta: metav1.ObjectMeta{
+				Name:        pod.Name,
+				Labels:      pod.Labels,
+				Annotations: pod.Annotations,
+			},
+			Spec: *pod.Spec.DeepCopy(),
+		}, snapshotprotocol.PodOptions{
+			Namespace:       namespace,
+			CheckpointID:    checkpointID,
+			ArtifactVersion: snapshotprotocol.DefaultCheckpointArtifactVersion,
+			Storage:         resolvedStorage,
+			SeccompProfile:  snapshotprotocol.DefaultSeccompLocalhostProfile,
+		})
+		_, err = clientset.CoreV1().Pods(namespace).Create(ctx, restorePod, metav1.CreateOptions{})
+		if apierrors.IsAlreadyExists(err) {
+			return nil, fmt.Errorf("restore pod %s/%s already exists", namespace, pod.Name)
+		}
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		pod, err = clientset.CoreV1().Pods(namespace).Get(ctx, podName, metav1.GetOptions{})
+		if err != nil {
+			return nil, fmt.Errorf("get restore target pod %s/%s: %w", namespace, podName, err)
+		}
+		if len(pod.Spec.Containers) == 0 {
+			return nil, fmt.Errorf("restore target pod %s/%s has no containers", namespace, podName)
+		}
+		if err := snapshotprotocol.ValidateRestorePodSpec(&pod.Spec, resolvedStorage, snapshotprotocol.DefaultSeccompLocalhostProfile); err != nil {
+			return nil, fmt.Errorf("restore target pod %s/%s is not snapshot-compatible: %w", namespace, podName, err)
+		}
+
+		labels := map[string]string{}
+		for key, value := range pod.Labels {
+			labels[key] = value
+		}
+		annotations := map[string]string{}
+		for key, value := range pod.Annotations {
+			annotations[key] = value
+		}
+		snapshotprotocol.ApplyRestoreTargetMetadata(labels, annotations, true, checkpointID, snapshotprotocol.DefaultCheckpointArtifactVersion)
+		patch, err := json.Marshal(map[string]any{
+			"metadata": map[string]any{
+				"labels":      labels,
+				"annotations": annotations,
+			},
+		})
+		if err != nil {
+			return nil, fmt.Errorf("encode restore target metadata patch: %w", err)
+		}
+		if _, err := clientset.CoreV1().Pods(namespace).Patch(ctx, podName, types.MergePatchType, patch, metav1.PatchOptions{}); err != nil {
+			return nil, fmt.Errorf("patch restore target pod %s/%s: %w", namespace, podName, err)
+		}
+	}
+
+	waitCtx, cancel := context.WithTimeout(ctx, opts.Timeout)
+	defer cancel()
+	status, err := waitForRestore(waitCtx, clientset, namespace, podName)
+	if err != nil {
+		return nil, err
+	}
+
+	return &result{
+		Name:               podName,
+		Namespace:          namespace,
+		CheckpointID:       checkpointID,
+		CheckpointLocation: resolvedStorage.Location,
+		RestorePod:         podName,
+		Status:             status,
+	}, nil
+}
+
+func waitForRestore(ctx context.Context, clientset kubernetes.Interface, namespace string, podName string) (string, error) {
+	var status string
+	if err := wait.PollUntilContextCancel(ctx, 2*time.Second, true, func(ctx context.Context) (bool, error) {
+		pod, err := clientset.CoreV1().Pods(namespace).Get(ctx, podName, metav1.GetOptions{})
+		if err != nil {
+			return false, fmt.Errorf("get restore pod %s/%s: %w", namespace, podName, err)
+		}
+
+		status = strings.TrimSpace(pod.Annotations[snapshotprotocol.RestoreStatusAnnotation])
+		if status == snapshotprotocol.RestoreStatusCompleted {
+			return true, nil
+		}
+		if status == snapshotprotocol.RestoreStatusFailed {
+			return false, fmt.Errorf("restore pod %s/%s failed", namespace, podName)
+		}
+		if pod.Status.Phase == corev1.PodFailed {
+			return false, fmt.Errorf("restore pod %s/%s entered phase Failed (%s)", namespace, podName, pod.Status.Reason)
+		}
+		return false, nil
+	}); err != nil {
+		if !wait.Interrupted(err) {
+			return "", err
+		}
+		return "", fmt.Errorf("restore pod %s/%s timed out: status=%q", namespace, podName, status)
+	}
+	return status, nil
+}

deploy/snapshot/go.mod

@@ -8,6 +8,7 @@ require (
 	github.com/cyphar/filepath-securejoin v0.5.1
 	github.com/go-logr/logr v1.4.3
 	github.com/go-logr/zapr v1.3.0
+	github.com/google/uuid v1.6.0
 	github.com/moby/sys/mountinfo v0.7.1
 	github.com/opencontainers/runtime-spec v1.2.0
 	github.com/prometheus/procfs v0.16.1
@@ -16,10 +17,13 @@ require (
 	google.golang.org/grpc v1.72.2
 	google.golang.org/protobuf v1.36.11
 	gopkg.in/yaml.v3 v3.0.1
-	k8s.io/api v0.35.0
-	k8s.io/apimachinery v0.35.0
-	k8s.io/client-go v0.35.0
-	k8s.io/kubelet v0.35.0
+	k8s.io/api v0.34.3
+	k8s.io/apimachinery v0.34.3
+	k8s.io/client-go v0.34.3
+	k8s.io/kubelet v0.34.3
+	k8s.io/utils v0.0.0-20251002143259-bc988d571ff4
+	sigs.k8s.io/controller-runtime v0.22.4
+	sigs.k8s.io/yaml v1.6.0
 )
 
 require (
@@ -41,6 +45,7 @@ require (
 	github.com/distribution/reference v0.6.0 // indirect
 	github.com/docker/go-events v0.0.0-20190806004212-e31b211e4f1c // indirect
 	github.com/emicklei/go-restful/v3 v3.12.2 // indirect
+	github.com/evanphx/json-patch/v5 v5.9.11 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/fxamacker/cbor/v2 v2.9.0 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
@@ -51,7 +56,6 @@ require (
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/google/gnostic-models v0.7.0 // indirect
 	github.com/google/go-cmp v0.7.0 // indirect
-	github.com/google/uuid v1.6.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/compress v1.18.0 // indirect
@@ -70,6 +74,7 @@ require (
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/spf13/pflag v1.0.9 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	go.opencensus.io v0.24.0 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
@@ -93,10 +98,8 @@ require (
 	gopkg.in/evanphx/json-patch.v4 v4.13.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	k8s.io/klog/v2 v2.130.1 // indirect
-	k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912 // indirect
-	k8s.io/utils v0.0.0-20251002143259-bc988d571ff4 // indirect
+	k8s.io/kube-openapi v0.0.0-20250814151709-d7b6acb124c3 // indirect
 	sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 // indirect
 	sigs.k8s.io/randfill v1.0.0 // indirect
-	sigs.k8s.io/structured-merge-diff/v6 v6.3.2-0.20260122202528-d9cc6641c482 // indirect
-	sigs.k8s.io/yaml v1.6.0 // indirect
+	sigs.k8s.io/structured-merge-diff/v6 v6.3.1 // indirect
 )

deploy/snapshot/go.sum

@@ -4,12 +4,12 @@ github.com/AdaLogics/go-fuzz-headers v0.0.0-20230811130428-ced1acdcaa24/go.mod h
 github.com/AdamKorcz/go-118-fuzz-build v0.0.0-20230306123547-8075edf89bb0 h1:59MxjQVfjXsBpLy+dbd2/ELV5ofnUkUZBvWSC85sheA=
 github.com/AdamKorcz/go-118-fuzz-build v0.0.0-20230306123547-8075edf89bb0/go.mod h1:OahwfttHWG6eJ0clwcfBAHoDI6X/LV/15hx/wlMZSrU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/Masterminds/semver/v3 v3.4.0 h1:Zog+i5UMtVoCU8oKka5P7i9q9HgrJeGzI9SA1Xbatp0=
-github.com/Masterminds/semver/v3 v3.4.0/go.mod h1:4V+yj/TJE1HU9XfppCwVMZq3I84lprf4nC11bSS5beM=
 github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
 github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU=
 github.com/Microsoft/hcsshim v0.11.7 h1:vl/nj3Bar/CvJSYo7gIQPyRWc9f3c6IeSNavBTSZNZQ=
 github.com/Microsoft/hcsshim v0.11.7/go.mod h1:MV8xMfmECjl5HdO7U/3/hFVnkmSBjAjmA09d4bExKcU=
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
@@ -53,6 +53,8 @@ github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymF
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
+github.com/evanphx/json-patch/v5 v5.9.11 h1:/8HVnzMq13/3x9TPvjG08wUGqBTmZBsCWzjTM0wiaDU=
+github.com/evanphx/json-patch/v5 v5.9.11/go.mod h1:3j+LviiESTElxA4p3EMKAB9HXj3/XEtnUf6OZxqIQTM=
 github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
 github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/fxamacker/cbor/v2 v2.9.0 h1:NpKPmjDBgUfBms6tr6JZkTHtfFGcMKsw3eGcmD/sapM=
@@ -105,8 +107,8 @@ github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
-github.com/google/pprof v0.0.0-20250403155104-27863c87afa6 h1:BHT72Gu3keYf3ZEu2J0b1vyeLSOYI8bm5wbJM/8yDe8=
-github.com/google/pprof v0.0.0-20250403155104-27863c87afa6/go.mod h1:boTsfXsheKC2y+lKOCMpSfarhxDeIzfZG1jqGcPl3cA=
+github.com/google/pprof v0.0.0-20241029153458-d1b30febd7db h1:097atOisP2aRj7vFgYQBbFN4U4JNXUNYpxael3UzMyo=
+github.com/google/pprof v0.0.0-20241029153458-d1b30febd7db/go.mod h1:vavhavw2zAxS5dIdcRluK6cSGGPlZynqzFM8NdvU144=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@@ -147,10 +149,10 @@ github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee h1:W5t00kpgFd
 github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
-github.com/onsi/ginkgo/v2 v2.27.2 h1:LzwLj0b89qtIy6SSASkzlNvX6WktqurSHwkk2ipF/Ns=
-github.com/onsi/ginkgo/v2 v2.27.2/go.mod h1:ArE1D/XhNXBXCBkKOLkbsb2c81dQHCRcF5zwn/ykDRo=
-github.com/onsi/gomega v1.38.2 h1:eZCjf2xjZAqe+LeWvKb5weQ+NcPwX84kqJ0cZNxok2A=
-github.com/onsi/gomega v1.38.2/go.mod h1:W2MJcYxRGV63b418Ai34Ud0hEdTVXq9NW9+Sx6uXf3k=
+github.com/onsi/ginkgo/v2 v2.22.0 h1:Yed107/8DjTr0lKCNt7Dn8yQ6ybuDRQoMGrNFKzMfHg=
+github.com/onsi/ginkgo/v2 v2.22.0/go.mod h1:7Du3c42kxCUegi0IImZ1wUQzMBVecgIHjR1C+NkhLQo=
+github.com/onsi/gomega v1.36.1 h1:bJDPBO7ibjxcbHMgSCoo4Yj18UWbKDlLwX1x9sybDcw=
+github.com/onsi/gomega v1.36.1/go.mod h1:PvZbdDc8J6XJEpDK4HCuRBm8a6Fzp9/DmhC9C7yFlog=
 github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
 github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
 github.com/opencontainers/image-spec v1.1.0 h1:8SG7/vwALn54lVB/0yZ/MMwhFrPYtpEHQb2IpWsCzug=
@@ -163,7 +165,13 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/prometheus/client_golang v1.22.0 h1:rb93p9lokFEsctTys46VnV1kLCDpVZ0a/Y92Vm0Zc6Q=
+github.com/prometheus/client_golang v1.22.0/go.mod h1:R7ljNsLXhuQXYZYtw6GAE9AZg8Y7vEW5scdCXrWRXC0=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
+github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
+github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
+github.com/prometheus/common v0.62.0 h1:xasJaQlnWAeyHdUBeGjXmutelfJHWMRr+Fg4QszZ2Io=
+github.com/prometheus/common v0.62.0/go.mod h1:vyBcEuLSvWos9B1+CyL7JZ2up+uFzXhkqml0W5zIY1I=
 github.com/prometheus/procfs v0.16.1 h1:hZ15bTNuirocR6u0JZ6BAHHmwS1p8B4P6MRqxtzMyRg=
 github.com/prometheus/procfs v0.16.1/go.mod h1:teAbpZRB1iIAJYREa1LsoWUXykVXA1KlTmWl8x/U+Is=
 github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
@@ -223,8 +231,6 @@ golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvx
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.29.0 h1:HV8lRxZC4l2cr3Zq1LvtOsi/ThTgWnUk/y64QSs8GwA=
-golang.org/x/mod v0.29.0/go.mod h1:NyhrlYXJ2H4eJiRy/WDBO6HMqZQ6q9nk4JzS3NuCK+w=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -318,25 +324,29 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-k8s.io/api v0.35.0 h1:iBAU5LTyBI9vw3L5glmat1njFK34srdLmktWwLTprlY=
-k8s.io/api v0.35.0/go.mod h1:AQ0SNTzm4ZAczM03QH42c7l3bih1TbAXYo0DkF8ktnA=
-k8s.io/apimachinery v0.35.0 h1:Z2L3IHvPVv/MJ7xRxHEtk6GoJElaAqDCCU0S6ncYok8=
-k8s.io/apimachinery v0.35.0/go.mod h1:jQCgFZFR1F4Ik7hvr2g84RTJSZegBc8yHgFWKn//hns=
-k8s.io/client-go v0.35.0 h1:IAW0ifFbfQQwQmga0UdoH0yvdqrbwMdq9vIFEhRpxBE=
-k8s.io/client-go v0.35.0/go.mod h1:q2E5AAyqcbeLGPdoRB+Nxe3KYTfPce1Dnu1myQdqz9o=
+k8s.io/api v0.34.3 h1:D12sTP257/jSH2vHV2EDYrb16bS7ULlHpdNdNhEw2S4=
+k8s.io/api v0.34.3/go.mod h1:PyVQBF886Q5RSQZOim7DybQjAbVs8g7gwJNhGtY5MBk=
+k8s.io/apiextensions-apiserver v0.34.1 h1:NNPBva8FNAPt1iSVwIE0FsdrVriRXMsaWFMqJbII2CI=
+k8s.io/apiextensions-apiserver v0.34.1/go.mod h1:hP9Rld3zF5Ay2Of3BeEpLAToP+l4s5UlxiHfqRaRcMc=
+k8s.io/apimachinery v0.34.3 h1:/TB+SFEiQvN9HPldtlWOTp0hWbJ+fjU+wkxysf/aQnE=
+k8s.io/apimachinery v0.34.3/go.mod h1:/GwIlEcWuTX9zKIg2mbw0LRFIsXwrfoVxn+ef0X13lw=
+k8s.io/client-go v0.34.3 h1:wtYtpzy/OPNYf7WyNBTj3iUA0XaBHVqhv4Iv3tbrF5A=
+k8s.io/client-go v0.34.3/go.mod h1:OxxeYagaP9Kdf78UrKLa3YZixMCfP6bgPwPwNBQBzpM=
 k8s.io/klog/v2 v2.130.1 h1:n9Xl7H1Xvksem4KFG4PYbdQCQxqc/tTUyrgXaOhHSzk=
 k8s.io/klog/v2 v2.130.1/go.mod h1:3Jpz1GvMt720eyJH1ckRHK1EDfpxISzJ7I9OYgaDtPE=
-k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912 h1:Y3gxNAuB0OBLImH611+UDZcmKS3g6CthxToOb37KgwE=
-k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912/go.mod h1:kdmbQkyfwUagLfXIad1y2TdrjPFWp2Q89B3qkRwf/pQ=
-k8s.io/kubelet v0.35.0 h1:8cgJHCBCKLYuuQ7/Pxb/qWbJfX1LXIw7790ce9xHq7c=
-k8s.io/kubelet v0.35.0/go.mod h1:ciRzAXn7C4z5iB7FhG1L2CGPPXLTVCABDlbXt/Zz8YA=
+k8s.io/kube-openapi v0.0.0-20250814151709-d7b6acb124c3 h1:liMHz39T5dJO1aOKHLvwaCjDbf07wVh6yaUlTpunnkE=
+k8s.io/kube-openapi v0.0.0-20250814151709-d7b6acb124c3/go.mod h1:UZ2yyWbFTpuhSbFhv24aGNOdoRdJZgsIObGBUaYVsts=
+k8s.io/kubelet v0.34.3 h1:8QRev2FmasZ05yCC774qn6ULche72PYM7AQv0CVt9CM=
+k8s.io/kubelet v0.34.3/go.mod h1:pMgblr+nVQ02UkyaTcgqzS3AIYVQkjlMFg1Pd5rGC1Q=
 k8s.io/utils v0.0.0-20251002143259-bc988d571ff4 h1:SjGebBtkBqHFOli+05xYbK8YF1Dzkbzn+gDM4X9T4Ck=
 k8s.io/utils v0.0.0-20251002143259-bc988d571ff4/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
+sigs.k8s.io/controller-runtime v0.22.4 h1:GEjV7KV3TY8e+tJ2LCTxUTanW4z/FmNB7l327UfMq9A=
+sigs.k8s.io/controller-runtime v0.22.4/go.mod h1:+QX1XUpTXN4mLoblf4tqr5CQcyHPAki2HLXqQMY6vh8=
 sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 h1:IpInykpT6ceI+QxKBbEflcR5EXP7sU1kvOlxwZh5txg=
 sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730/go.mod h1:mdzfpAEoE6DHQEN0uh9ZbOCuHbLK5wOm7dK4ctXE9Tg=
 sigs.k8s.io/randfill v1.0.0 h1:JfjMILfT8A6RbawdsK2JXGBR5AQVfd+9TbzrlneTyrU=
 sigs.k8s.io/randfill v1.0.0/go.mod h1:XeLlZ/jmk4i1HRopwe7/aU3H5n1zNUcX6TM94b3QxOY=
-sigs.k8s.io/structured-merge-diff/v6 v6.3.2-0.20260122202528-d9cc6641c482 h1:2WOzJpHUBVrrkDjU4KBT8n5LDcj824eX0I5UKcgeRUs=
-sigs.k8s.io/structured-merge-diff/v6 v6.3.2-0.20260122202528-d9cc6641c482/go.mod h1:M3W8sfWvn2HhQDIbGWj3S099YozAsymCo/wrT5ohRUE=
+sigs.k8s.io/structured-merge-diff/v6 v6.3.1 h1:JrhdFMqOd/+3ByqlP2I45kTOZmTRLBUm5pvRjeheg7E=
+sigs.k8s.io/structured-merge-diff/v6 v6.3.1/go.mod h1:M3W8sfWvn2HhQDIbGWj3S099YozAsymCo/wrT5ohRUE=
 sigs.k8s.io/yaml v1.6.0 h1:G8fkbMSAFqgEFgh4b1wmtzDnioxFCUgTZhlbj5P9QYs=
 sigs.k8s.io/yaml v1.6.0/go.mod h1:796bPqUfzR/0jLAl6XjHl3Ck7MiyVv8dbTdyT3/pMf4=

deploy/snapshot/pkg/controller/controller.go → deploy/snapshot/internal/controller/controller.go

@@ -26,20 +26,10 @@ import (
 	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/cache"
 
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/common"
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/executor"
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/types"
-)
-
-const (
-	kubeLabelIsCheckpointSource         = "nvidia.com/snapshot-is-checkpoint-source"
-	kubeLabelCheckpointHash             = "nvidia.com/snapshot-checkpoint-hash"
-	kubeLabelIsRestoreTarget            = "nvidia.com/snapshot-is-restore-target"
-	kubeAnnotationCheckpointLocation    = "nvidia.com/snapshot-checkpoint-location"
-	kubeAnnotationCheckpointStorageType = "nvidia.com/snapshot-checkpoint-storage-type"
-	kubeAnnotationCheckpointStatus      = "nvidia.com/snapshot-checkpoint-status"
-	kubeAnnotationRestoreStatus         = "nvidia.com/snapshot-restore-status"
-	kubeAnnotationRestoreContainerID    = "nvidia.com/snapshot-restore-container-id"
+	"github.com/ai-dynamo/dynamo/deploy/snapshot/internal/executor"
+	snapshotruntime "github.com/ai-dynamo/dynamo/deploy/snapshot/internal/runtime"
+	"github.com/ai-dynamo/dynamo/deploy/snapshot/internal/types"
+	snapshotprotocol "github.com/ai-dynamo/dynamo/deploy/snapshot/protocol"
 )
 
 // NodeController watches local-node pods with checkpoint metadata and reconciles
@@ -88,8 +78,8 @@ func NewNodeController(
 func (w *NodeController) Run(ctx context.Context) error {
 	w.log.Info("Starting snapshot node controller",
 		"node", w.config.NodeName,
-		"checkpoint", kubeLabelIsCheckpointSource,
-		"restore", kubeLabelIsRestoreTarget,
+		"checkpoint", snapshotprotocol.CheckpointSourceLabel,
+		"restore", snapshotprotocol.RestoreTargetLabel,
 	)
 
 	var nsOptions []informers.SharedInformerOption
@@ -104,7 +94,7 @@ func (w *NodeController) Run(ctx context.Context) error {
 
 	// Checkpoint informer
 	checkpointSelector := labels.SelectorFromSet(labels.Set{
-		kubeLabelIsCheckpointSource: "true",
+		snapshotprotocol.CheckpointSourceLabel: "true",
 	}).String()
 
 	ckptFactoryOpts := append([]informers.SharedInformerOption{
@@ -141,7 +131,7 @@ func (w *NodeController) Run(ctx context.Context) error {
 
 	// Restore informer
 	restoreSelector := labels.SelectorFromSet(labels.Set{
-		kubeLabelIsRestoreTarget: "true",
+		snapshotprotocol.RestoreTargetLabel: "true",
 	}).String()
 
 	restoreFactoryOpts := append([]informers.SharedInformerOption{
@@ -196,9 +186,9 @@ func (w *NodeController) reconcileCheckpointPod(ctx context.Context, pod *corev1
 
 	podKey := fmt.Sprintf("%s/%s", pod.Namespace, pod.Name)
 
-	checkpointHash, ok := pod.Labels[kubeLabelCheckpointHash]
-	if !ok || checkpointHash == "" {
-		w.log.Info("Pod has checkpoint label but no checkpoint-hash label", "pod", podKey)
+	checkpointID, ok := pod.Labels[snapshotprotocol.CheckpointIDLabel]
+	if !ok || checkpointID == "" {
+		w.log.Info("Pod has checkpoint label but no checkpoint-id label", "pod", podKey)
 		return
 	}
 
@@ -208,8 +198,8 @@ func (w *NodeController) reconcileCheckpointPod(ctx context.Context, pod *corev1
 		return
 	}
 
-	jobStatus := job.Annotations[kubeAnnotationCheckpointStatus]
-	if jobStatus == "completed" || jobStatus == "failed" {
+	jobStatus := job.Annotations[snapshotprotocol.CheckpointStatusAnnotation]
+	if jobStatus == snapshotprotocol.CheckpointStatusCompleted || jobStatus == snapshotprotocol.CheckpointStatusFailed {
 		return
 	}
 
@@ -217,17 +207,17 @@ func (w *NodeController) reconcileCheckpointPod(ctx context.Context, pod *corev1
 		return
 	}
 
-	checkpointLocation, checkpointStorageType, err := checkpointStorageFromPod(pod)
+	checkpointLocation, err := w.checkpointLocationFromPod(pod, checkpointID)
 	if err != nil {
 		w.release(podKey)
-		w.log.Error(err, "Checkpoint pod is missing storage metadata", "pod", podKey, "checkpoint_hash", checkpointHash)
+		w.log.Error(err, "Checkpoint pod is missing storage metadata", "pod", podKey, "checkpoint_id", checkpointID)
 		return
 	}
 
 	acquiredLease, err := acquireCheckpointLease(ctx, w.clientset, w.log, job, w.holderID)
 	if err != nil {
 		w.release(podKey)
-		w.log.Error(err, "Failed to acquire checkpoint lease", "pod", podKey, "checkpoint_hash", checkpointHash)
+		w.log.Error(err, "Failed to acquire checkpoint lease", "pod", podKey, "checkpoint_id", checkpointID)
 		return
 	}
 	if !acquiredLease {
@@ -235,12 +225,12 @@ func (w *NodeController) reconcileCheckpointPod(ctx context.Context, pod *corev1
 		return
 	}
 
-	w.log.Info("Pod ready, triggering checkpoint", "pod", podKey, "checkpoint_hash", checkpointHash)
-	emitPodEvent(ctx, w.clientset, w.log, pod, "snapshot", corev1.EventTypeNormal, "CheckpointRequested", fmt.Sprintf("Checkpoint requested: %s", checkpointHash))
+	w.log.Info("Pod ready, triggering checkpoint", "pod", podKey, "checkpoint_id", checkpointID)
+	emitPodEvent(ctx, w.clientset, w.log, pod, "snapshot", corev1.EventTypeNormal, "CheckpointRequested", fmt.Sprintf("Checkpoint requested: %s", checkpointID))
 
 	go func() {
-		if err := w.runCheckpoint(ctx, pod, job, checkpointHash, checkpointLocation, checkpointStorageType, podKey); err != nil {
-			opLog := w.log.WithValues("pod", podKey, "checkpoint_hash", checkpointHash)
+		if err := w.runCheckpoint(ctx, pod, job, checkpointID, checkpointLocation, podKey); err != nil {
+			opLog := w.log.WithValues("pod", podKey, "checkpoint_id", checkpointID)
 			opLog.Error(err, "Checkpoint controller worker failed")
 			emitPodEvent(ctx, w.clientset, opLog, pod, "snapshot", corev1.EventTypeWarning, "CheckpointWorkerFailed", err.Error())
 		}
@@ -258,28 +248,24 @@ func (w *NodeController) reconcileRestorePod(ctx context.Context, pod *corev1.Po
 		return
 	}
 
-	if isPodReady(pod) {
-		return
-	}
-
-	checkpointHash, ok := pod.Labels[kubeLabelCheckpointHash]
-	if !ok || checkpointHash == "" {
-		w.log.Info("Restore pod has no checkpoint-hash label", "pod", podKey)
+	checkpointID, ok := pod.Labels[snapshotprotocol.CheckpointIDLabel]
+	if !ok || checkpointID == "" {
+		w.log.Info("Restore pod has no checkpoint-id label", "pod", podKey)
 		return
 	}
 
-	if strings.ContainsAny(checkpointHash, "/\\") || strings.Contains(checkpointHash, "..") || filepath.Clean(checkpointHash) != checkpointHash {
-		w.log.Error(fmt.Errorf("invalid checkpoint hash %q", checkpointHash), "Invalid checkpoint hash on restore pod", "pod", podKey)
+	if strings.ContainsAny(checkpointID, "/\\") || strings.Contains(checkpointID, "..") || filepath.Clean(checkpointID) != checkpointID {
+		w.log.Error(fmt.Errorf("invalid checkpoint id %q", checkpointID), "Invalid checkpoint id on restore pod", "pod", podKey)
 		return
 	}
 
-	checkpointLocation, checkpointStorageType, err := checkpointStorageFromPod(pod)
+	checkpointLocation, err := w.checkpointLocationFromPod(pod, checkpointID)
 	if err != nil {
-		w.log.Error(err, "Restore pod is missing storage metadata", "pod", podKey, "checkpoint_hash", checkpointHash)
+		w.log.Error(err, "Restore pod is missing storage metadata", "pod", podKey, "checkpoint_id", checkpointID)
 		return
 	}
 	if _, err := os.Stat(checkpointLocation); os.IsNotExist(err) {
-		w.log.V(1).Info("Checkpoint not ready on disk, skipping restore", "pod", podKey, "checkpoint_hash", checkpointHash, "checkpoint_location", checkpointLocation)
+		w.log.V(1).Info("Checkpoint not ready on disk, skipping restore", "pod", podKey, "checkpoint_id", checkpointID, "checkpoint_location", checkpointLocation)
 		return
 	}
 
@@ -302,9 +288,9 @@ func (w *NodeController) reconcileRestorePod(ctx context.Context, pod *corev1.Po
 		return
 	}
 
-	annotationStatus := pod.Annotations[kubeAnnotationRestoreStatus]
-	annotationContainerID := pod.Annotations[kubeAnnotationRestoreContainerID]
-	if annotationContainerID == containerID && (annotationStatus == "completed" || annotationStatus == "in_progress") {
+	annotationStatus := pod.Annotations[snapshotprotocol.RestoreStatusAnnotation]
+	annotationContainerID := pod.Annotations[snapshotprotocol.RestoreContainerIDAnnotation]
+	if annotationContainerID == containerID && (annotationStatus == snapshotprotocol.RestoreStatusCompleted || annotationStatus == snapshotprotocol.RestoreStatusInProgress) {
 		return
 	}
 
@@ -313,12 +299,12 @@ func (w *NodeController) reconcileRestorePod(ctx context.Context, pod *corev1.Po
 		return
 	}
 
-	w.log.Info("Restore pod running, triggering external restore", "pod", podKey, "checkpoint_hash", checkpointHash)
-	emitPodEvent(ctx, w.clientset, w.log, pod, "snapshot", corev1.EventTypeNormal, "RestoreRequested", fmt.Sprintf("Restore requested from checkpoint %s", checkpointHash))
+	w.log.Info("Restore pod running, triggering external restore", "pod", podKey, "checkpoint_id", checkpointID)
+	emitPodEvent(ctx, w.clientset, w.log, pod, "snapshot", corev1.EventTypeNormal, "RestoreRequested", fmt.Sprintf("Restore requested from checkpoint %s", checkpointID))
 
 	go func() {
-		if err := w.runRestore(ctx, pod, containerName, containerID, checkpointHash, checkpointLocation, checkpointStorageType, restoreAttemptKey); err != nil {
-			opLog := w.log.WithValues("pod", podKey, "checkpoint_hash", checkpointHash)
+		if err := w.runRestore(ctx, pod, containerName, containerID, checkpointID, checkpointLocation, restoreAttemptKey); err != nil {
+			opLog := w.log.WithValues("pod", podKey, "checkpoint_id", checkpointID)
 			opLog.Error(err, "Restore controller worker failed")
 			emitPodEvent(ctx, w.clientset, opLog, pod, "snapshot", corev1.EventTypeWarning, "RestoreWorkerFailed", err.Error())
 		}
@@ -331,14 +317,14 @@ func (w *NodeController) reconcileRestorePod(ctx context.Context, pod *corev1.Po
 //  3. Call executor.Checkpoint (inspect → configure → CUDA lock/checkpoint → CRIU dump → rootfs diff)
 //  4. SIGUSR1 the process on success (notify workload), SIGKILL on failure (terminate immediately)
 //  5. Mark job as completed or failed
-func (w *NodeController) runCheckpoint(ctx context.Context, pod *corev1.Pod, job *batchv1.Job, checkpointHash, checkpointLocation, checkpointStorageType, podKey string) error {
+func (w *NodeController) runCheckpoint(ctx context.Context, pod *corev1.Pod, job *batchv1.Job, checkpointID, checkpointLocation, podKey string) error {
 	releasePodOnExit := true
 	defer func() {
 		if releasePodOnExit {
 			w.release(podKey)
 		}
 	}()
-	log := w.log.WithValues("pod", podKey, "checkpoint_hash", checkpointHash)
+	log := w.log.WithValues("pod", podKey, "checkpoint_id", checkpointID)
 	leaseCtx, stopLease := context.WithCancelCause(ctx)
 	defer stopLease(nil)
 
@@ -358,7 +344,7 @@ func (w *NodeController) runCheckpoint(ctx context.Context, pod *corev1.Pod, job
 
 	setCheckpointStatus := func(value string) error {
 		if err := annotateJob(ctx, w.clientset, log, job, map[string]string{
-			kubeAnnotationCheckpointStatus: value,
+			snapshotprotocol.CheckpointStatusAnnotation: value,
 		}); err != nil {
 			releasePodOnExit = false
 			releaseLeaseOnExit = false
@@ -373,7 +359,7 @@ func (w *NodeController) runCheckpoint(ctx context.Context, pod *corev1.Pod, job
 		err := fmt.Errorf("no containers found in pod spec")
 		log.Error(err, "Checkpoint failed")
 		emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeWarning, "CheckpointFailed", err.Error())
-		if statusErr := setCheckpointStatus("failed"); statusErr != nil {
+		if statusErr := setCheckpointStatus(snapshotprotocol.CheckpointStatusFailed); statusErr != nil {
 			return statusErr
 		}
 		return nil
@@ -387,18 +373,18 @@ func (w *NodeController) runCheckpoint(ctx context.Context, pod *corev1.Pod, job
 	}
 	if containerID == "" {
 		emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeWarning, "CheckpointFailed", "Could not resolve target container ID")
-		if statusErr := setCheckpointStatus("failed"); statusErr != nil {
+		if statusErr := setCheckpointStatus(snapshotprotocol.CheckpointStatusFailed); statusErr != nil {
 			return statusErr
 		}
 		return nil
 	}
 
 	// Resolve the container's host PID (needed for signaling after checkpoint)
-	containerPID, _, err := common.ResolveContainer(ctx, w.containerd, containerID)
+	containerPID, _, err := snapshotruntime.ResolveContainer(ctx, w.containerd, containerID)
 	if err != nil {
 		log.Error(err, "Failed to resolve container")
 		emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeWarning, "CheckpointFailed", fmt.Sprintf("Container resolve failed: %v", err))
-		if statusErr := setCheckpointStatus("failed"); statusErr != nil {
+		if statusErr := setCheckpointStatus(snapshotprotocol.CheckpointStatusFailed); statusErr != nil {
 			return statusErr
 		}
 		return nil
@@ -408,9 +394,8 @@ func (w *NodeController) runCheckpoint(ctx context.Context, pod *corev1.Pod, job
 	req := executor.CheckpointRequest{
 		ContainerID:        containerID,
 		ContainerName:      containerName,
-		CheckpointHash:        checkpointHash,
+		CheckpointID:       checkpointID,
 		CheckpointLocation: checkpointLocation,
-		CheckpointStorageType: checkpointStorageType,
 		NodeName:           w.config.NodeName,
 		PodName:            pod.Name,
 		PodNamespace:       pod.Namespace,
@@ -423,10 +408,10 @@ func (w *NodeController) runCheckpoint(ctx context.Context, pod *corev1.Pod, job
 		log.Error(err, "Checkpoint failed")
 		emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeWarning, "CheckpointFailed", err.Error())
 		// SIGKILL on failure: process is unrecoverable (CUDA locked), terminate immediately
-		if signalErr := common.SendSignalToPID(log, containerPID, syscall.SIGKILL, "checkpoint failed"); signalErr != nil {
+		if signalErr := snapshotruntime.SendSignalToPID(log, containerPID, syscall.SIGKILL, "checkpoint failed"); signalErr != nil {
 			log.Error(signalErr, "Failed to signal checkpoint failure to runtime process")
 		}
-		if statusErr := setCheckpointStatus("failed"); statusErr != nil {
+		if statusErr := setCheckpointStatus(snapshotprotocol.CheckpointStatusFailed); statusErr != nil {
 			return statusErr
 		}
 		return nil
@@ -441,27 +426,27 @@ func (w *NodeController) runCheckpoint(ctx context.Context, pod *corev1.Pod, job
 		}
 		log.Error(err, "Checkpoint failed verification")
 		emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeWarning, "CheckpointFailed", err.Error())
-		if signalErr := common.SendSignalToPID(log, containerPID, syscall.SIGKILL, "checkpoint verification failed"); signalErr != nil {
+		if signalErr := snapshotruntime.SendSignalToPID(log, containerPID, syscall.SIGKILL, "checkpoint verification failed"); signalErr != nil {
 			log.Error(signalErr, "Failed to signal checkpoint verification failure to runtime process")
 		}
-		if statusErr := setCheckpointStatus("failed"); statusErr != nil {
+		if statusErr := setCheckpointStatus(snapshotprotocol.CheckpointStatusFailed); statusErr != nil {
 			return statusErr
 		}
 		return nil
 	}
 
 	// Step 2: SIGUSR1 on success: notify the workload that checkpoint completed
-	emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeNormal, "CheckpointSucceeded", fmt.Sprintf("Checkpoint completed: %s", checkpointHash))
-	if err := common.SendSignalToPID(log, containerPID, syscall.SIGUSR1, "checkpoint complete"); err != nil {
+	emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeNormal, "CheckpointSucceeded", fmt.Sprintf("Checkpoint completed: %s", checkpointID))
+	if err := snapshotruntime.SendSignalToPID(log, containerPID, syscall.SIGUSR1, "checkpoint complete"); err != nil {
 		log.Error(err, "Failed to signal checkpoint completion to runtime process")
 		emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeWarning, "CheckpointFailed", err.Error())
-		if statusErr := setCheckpointStatus("failed"); statusErr != nil {
+		if statusErr := setCheckpointStatus(snapshotprotocol.CheckpointStatusFailed); statusErr != nil {
 			return statusErr
 		}
 		return nil
 	}
 
-	if err := setCheckpointStatus("completed"); err != nil {
+	if err := setCheckpointStatus(snapshotprotocol.CheckpointStatusCompleted); err != nil {
 		return err
 	}
 	return nil
@@ -473,7 +458,7 @@ func (w *NodeController) runCheckpoint(ctx context.Context, pod *corev1.Pod, job
 //  3. SIGCONT the restored process to wake it up
 //  4. Wait for the pod to become Ready
 //  5. Mark the container instance as completed
-func (w *NodeController) runRestore(ctx context.Context, pod *corev1.Pod, containerName, containerID, checkpointHash, checkpointLocation, checkpointStorageType, restoreAttemptKey string) error {
+func (w *NodeController) runRestore(ctx context.Context, pod *corev1.Pod, containerName, containerID, checkpointID, checkpointLocation, restoreAttemptKey string) error {
 	releaseOnExit := true
 	defer func() {
 		if releaseOnExit {
@@ -481,14 +466,14 @@ func (w *NodeController) runRestore(ctx context.Context, pod *corev1.Pod, contai
 		}
 	}()
 	podKey := fmt.Sprintf("%s/%s", pod.Namespace, pod.Name)
-	log := w.log.WithValues("pod", podKey, "checkpoint_hash", checkpointHash, "container_id", containerID)
+	log := w.log.WithValues("pod", podKey, "checkpoint_id", checkpointID, "container_id", containerID)
 	setRestoreStatus := func(value string) error {
 		annotations := map[string]string{
-			kubeAnnotationRestoreStatus:      value,
-			kubeAnnotationRestoreContainerID: containerID,
+			snapshotprotocol.RestoreStatusAnnotation:      value,
+			snapshotprotocol.RestoreContainerIDAnnotation: containerID,
 		}
 		if err := annotatePod(ctx, w.clientset, log, pod, annotations); err != nil {
-			if value == "completed" {
+			if value == snapshotprotocol.RestoreStatusCompleted {
 				releaseOnExit = false
 				return fmt.Errorf("failed to persist terminal restore status %q: %w", value, err)
 			}
@@ -498,17 +483,16 @@ func (w *NodeController) runRestore(ctx context.Context, pod *corev1.Pod, contai
 	}
 
 	if err := annotatePod(ctx, w.clientset, log, pod, map[string]string{
-		kubeAnnotationRestoreStatus:      "in_progress",
-		kubeAnnotationRestoreContainerID: containerID,
+		snapshotprotocol.RestoreStatusAnnotation:      snapshotprotocol.RestoreStatusInProgress,
+		snapshotprotocol.RestoreContainerIDAnnotation: containerID,
 	}); err != nil {
 		return fmt.Errorf("failed to annotate pod with restore in_progress: %w", err)
 	}
 
 	// Step 1: Run the restore orchestrator (inspect + nsrestore)
 	req := executor.RestoreRequest{
-		CheckpointHash:        checkpointHash,
+		CheckpointID:       checkpointID,
 		CheckpointLocation: checkpointLocation,
-		CheckpointStorageType: checkpointStorageType,
 		NSRestorePath:      w.config.Restore.NSRestorePath,
 		PodName:            pod.Name,
 		PodNamespace:       pod.Namespace,
@@ -519,12 +503,12 @@ func (w *NodeController) runRestore(ctx context.Context, pod *corev1.Pod, contai
 	if err != nil {
 		log.Error(err, "External restore failed")
 		emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeWarning, "RestoreFailed", err.Error())
-		placeholderHostPID, _, pidErr := common.ResolveContainerByPod(ctx, w.containerd, pod.Name, pod.Namespace, containerName)
+		placeholderHostPID, _, pidErr := snapshotruntime.ResolveContainerByPod(ctx, w.containerd, pod.Name, pod.Namespace, containerName)
 		if pidErr != nil {
 			releaseOnExit = false
 			return fmt.Errorf("restore failed and placeholder PID could not be resolved: %w", pidErr)
 		}
-		if killErr := common.SendSignalToPID(log, placeholderHostPID, syscall.SIGKILL, "restore failed"); killErr != nil {
+		if killErr := snapshotruntime.SendSignalToPID(log, placeholderHostPID, syscall.SIGKILL, "restore failed"); killErr != nil {
 			releaseOnExit = false
 			return fmt.Errorf("restore failed and placeholder could not be killed: %w", killErr)
 		}
@@ -532,17 +516,17 @@ func (w *NodeController) runRestore(ctx context.Context, pod *corev1.Pod, contai
 	}
 
 	// Step 2: SIGCONT the restored process via PID namespace
-	placeholderHostPID, _, err := common.ResolveContainerByPod(ctx, w.containerd, pod.Name, pod.Namespace, containerName)
+	placeholderHostPID, _, err := snapshotruntime.ResolveContainerByPod(ctx, w.containerd, pod.Name, pod.Namespace, containerName)
 	if err != nil {
 		log.Error(err, "Failed to resolve placeholder host PID for signaling")
 		emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeWarning, "RestoreFailed", err.Error())
 		releaseOnExit = false
 		return fmt.Errorf("failed to resolve placeholder host PID for signaling: %w", err)
 	}
-	if err := common.SendSignalViaPIDNamespace(ctx, log, placeholderHostPID, restoredPID, syscall.SIGCONT, "restore complete"); err != nil {
+	if err := snapshotruntime.SendSignalViaPIDNamespace(ctx, log, placeholderHostPID, restoredPID, syscall.SIGCONT, "restore complete"); err != nil {
 		log.Error(err, "Failed to signal restored runtime process")
 		emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeWarning, "RestoreFailed", err.Error())
-		if killErr := common.SendSignalToPID(log, placeholderHostPID, syscall.SIGKILL, "restore signaling failed"); killErr != nil {
+		if killErr := snapshotruntime.SendSignalToPID(log, placeholderHostPID, syscall.SIGKILL, "restore signaling failed"); killErr != nil {
 			log.Error(killErr, "Failed to kill placeholder after restore signaling failure")
 		}
 		releaseOnExit = false
@@ -559,15 +543,15 @@ func (w *NodeController) runRestore(ctx context.Context, pod *corev1.Pod, contai
 	if err := waitForPodReady(readyCtx, w.clientset, pod.Namespace, pod.Name, containerName); err != nil {
 		log.Error(err, "Restore post-signal readiness check failed")
 		emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeWarning, "RestoreFailed", err.Error())
-		if killErr := common.SendSignalToPID(log, placeholderHostPID, syscall.SIGKILL, "restore readiness failed"); killErr != nil {
+		if killErr := snapshotruntime.SendSignalToPID(log, placeholderHostPID, syscall.SIGKILL, "restore readiness failed"); killErr != nil {
 			log.Error(killErr, "Failed to kill placeholder after restore readiness failure")
 		}
 		releaseOnExit = false
 		return fmt.Errorf("restore post-signal readiness check failed: %w", err)
 	}
 
-	emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeNormal, "RestoreSucceeded", fmt.Sprintf("Restore completed from checkpoint %s", checkpointHash))
-	if err := setRestoreStatus("completed"); err != nil {
+	emitPodEvent(ctx, w.clientset, log, pod, "snapshot", corev1.EventTypeNormal, "RestoreSucceeded", fmt.Sprintf("Restore completed from checkpoint %s", checkpointID))
+	if err := setRestoreStatus(snapshotprotocol.RestoreStatusCompleted); err != nil {
 		return err
 	}
 	return nil
@@ -589,19 +573,17 @@ func (w *NodeController) release(podKey string) {
 	delete(w.inFlight, podKey)
 }
 
-func checkpointStorageFromPod(pod *corev1.Pod) (string, string, error) {
-	checkpointLocation := strings.TrimSpace(pod.Annotations[kubeAnnotationCheckpointLocation])
-	if checkpointLocation == "" {
-		return "", "", fmt.Errorf("missing %s annotation", kubeAnnotationCheckpointLocation)
-	}
-
-	checkpointStorageType := strings.TrimSpace(pod.Annotations[kubeAnnotationCheckpointStorageType])
-	if checkpointStorageType == "" {
-		return "", "", fmt.Errorf("missing %s annotation", kubeAnnotationCheckpointStorageType)
-	}
-	if checkpointStorageType != "pvc" {
-		return "", "", fmt.Errorf("checkpoint storage type %q is not supported", checkpointStorageType)
+func (w *NodeController) checkpointLocationFromPod(pod *corev1.Pod, checkpointID string) (string, error) {
+	resolvedStorage, err := snapshotprotocol.ResolveCheckpointStorage(
+		checkpointID,
+		strings.TrimSpace(pod.Annotations[snapshotprotocol.CheckpointArtifactVersionAnnotation]),
+		snapshotprotocol.Storage{
+			Type:     w.config.Storage.Type,
+			BasePath: w.config.Storage.BasePath,
+		},
+	)
+	if err != nil {
+		return "", err
 	}
-
-	return checkpointLocation, checkpointStorageType, nil
+	return resolvedStorage.Location, nil
 }

deploy/snapshot/pkg/controller/controller_test.go → deploy/snapshot/internal/controller/controller_test.go

@@ -17,7 +17,8 @@ import (
 	"k8s.io/client-go/kubernetes/fake"
 	clientgotesting "k8s.io/client-go/testing"
 
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/types"
+	"github.com/ai-dynamo/dynamo/deploy/snapshot/internal/types"
+	snapshotprotocol "github.com/ai-dynamo/dynamo/deploy/snapshot/protocol"
 )
 
 const testNodeName = "test-node"
@@ -31,6 +32,10 @@ func makeTestController(t *testing.T, objs ...runtime.Object) *NodeController {
 	return &NodeController{
 		config: &types.AgentConfig{
 			NodeName: testNodeName,
+			Storage: types.StorageSpec{
+				Type:     snapshotprotocol.StorageTypePVC,
+				BasePath: t.TempDir(),
+			},
 		},
 		clientset: fake.NewClientset(objs...),
 		log:       testr.New(t),
@@ -187,11 +192,11 @@ func TestReconcileCheckpointPod(t *testing.T) {
 	for _, tc := range tests {
 		t.Run(tc.name, func(t *testing.T) {
 			labels := map[string]string{
-				kubeLabelIsCheckpointSource:    "true",
+				snapshotprotocol.CheckpointSourceLabel: "true",
 				"batch.kubernetes.io/job-name":         "checkpoint-job",
 			}
 			if tc.hash != "" {
-				labels[kubeLabelCheckpointHash] = tc.hash
+				labels[snapshotprotocol.CheckpointIDLabel] = tc.hash
 			}
 
 			job := &batchv1.Job{
@@ -202,18 +207,11 @@ func TestReconcileCheckpointPod(t *testing.T) {
 			}
 			if tc.annotation != "" {
 				job.Annotations = map[string]string{
-					kubeAnnotationCheckpointStatus: tc.annotation,
+					snapshotprotocol.CheckpointStatusAnnotation: tc.annotation,
 				}
 			}
 
-			var annotations map[string]string
-			if tc.hash != "" {
-				annotations = map[string]string{
-					kubeAnnotationCheckpointLocation:    "/checkpoints/" + tc.hash,
-					kubeAnnotationCheckpointStorageType: "pvc",
-				}
-			}
-			pod := makePod("test-pod", "default", tc.nodeName, tc.phase, tc.ready, labels, annotations)
+			pod := makePod("test-pod", "default", tc.nodeName, tc.phase, tc.ready, labels, nil)
 			objs := []runtime.Object{job}
 			if tc.lease != nil {
 				objs = append(objs, tc.lease)
@@ -289,13 +287,13 @@ func TestReconcileRestorePod(t *testing.T) {
 			want:      false,
 		},
 		{
-			name:      "already ready",
+			name:      "ready placeholder still restores",
 			nodeName:  testNodeName,
 			phase:     corev1.PodRunning,
 			ready:     true,
 			hash:      "abc123",
 			createDir: true,
-			want:      false,
+			want:      true,
 		},
 		{
 			name:     "missing hash",
@@ -382,29 +380,20 @@ func TestReconcileRestorePod(t *testing.T) {
 	for _, tc := range tests {
 		t.Run(tc.name, func(t *testing.T) {
 			labels := map[string]string{
-				kubeLabelIsRestoreTarget: "true",
+				snapshotprotocol.RestoreTargetLabel: "true",
 			}
 			if tc.hash != "" {
-				labels[kubeLabelCheckpointHash] = tc.hash
+				labels[snapshotprotocol.CheckpointIDLabel] = tc.hash
 			}
 
 			w := makeTestController(t)
-			checkpointDir := t.TempDir()
-
 			var annotations map[string]string
 			if tc.annotationStatus != "" {
 				annotations = map[string]string{
-					kubeAnnotationRestoreStatus:      tc.annotationStatus,
-					kubeAnnotationRestoreContainerID: tc.annotationContainerID,
+					snapshotprotocol.RestoreStatusAnnotation:      tc.annotationStatus,
+					snapshotprotocol.RestoreContainerIDAnnotation: tc.annotationContainerID,
 				}
 			}
-			if tc.hash != "" {
-				if annotations == nil {
-					annotations = make(map[string]string)
-				}
-				annotations[kubeAnnotationCheckpointLocation] = filepath.Join(checkpointDir, tc.hash)
-				annotations[kubeAnnotationCheckpointStorageType] = "pvc"
-			}
 
 			pod := makePod("test-pod", "default", tc.nodeName, tc.phase, tc.ready, labels, annotations)
 			pod.Status.ContainerStatuses = []corev1.ContainerStatus{{
@@ -414,7 +403,7 @@ func TestReconcileRestorePod(t *testing.T) {
 			}}
 
 			if tc.createDir && tc.hash != "" {
-				dir := filepath.Join(checkpointDir, tc.hash)
+				dir := filepath.Join(w.config.Storage.BasePath, tc.hash, "versions", snapshotprotocol.DefaultCheckpointArtifactVersion)
 				if err := os.MkdirAll(dir, 0o755); err != nil {
 					t.Fatalf("failed to create checkpoint dir: %v", err)
 				}
@@ -473,6 +462,10 @@ func TestRunCheckpointKeepsLeaseAndInFlightOnTerminalStatusPatchFailure(t *testi
 	w := &NodeController{
 		config: &types.AgentConfig{
 			NodeName: testNodeName,
+			Storage: types.StorageSpec{
+				Type:     snapshotprotocol.StorageTypePVC,
+				BasePath: t.TempDir(),
+			},
 		},
 		clientset: clientset,
 		log:       testr.New(t),
@@ -483,7 +476,7 @@ func TestRunCheckpointKeepsLeaseAndInFlightOnTerminalStatusPatchFailure(t *testi
 		stopCh: make(chan struct{}),
 	}
 
-	err := w.runCheckpoint(context.Background(), pod, job, "abc123", filepath.Join(t.TempDir(), "abc123"), "pvc", "default/test-pod")
+	err := w.runCheckpoint(context.Background(), pod, job, "abc123", filepath.Join(t.TempDir(), "abc123"), "default/test-pod")
 	if err == nil {
 		t.Fatal("expected terminal checkpoint status update to fail")
 	}

deploy/snapshot/pkg/controller/util.go → deploy/snapshot/internal/controller/util.go

@@ -22,6 +22,20 @@ const (
 	checkpointLeaseRenewInterval = 10 * time.Second
 )
 
+func checkpointLeaseExpired(lease *coordinationv1.Lease, now time.Time) bool {
+	if lease == nil || lease.Spec.LeaseDurationSeconds == nil {
+		return true
+	}
+	last := lease.Spec.RenewTime
+	if last == nil {
+		last = lease.Spec.AcquireTime
+	}
+	if last == nil {
+		return true
+	}
+	return now.After(last.Time.Add(time.Duration(*lease.Spec.LeaseDurationSeconds) * time.Second))
+}
+
 func podFromInformerObj(obj interface{}) (*corev1.Pod, bool) {
 	if pod, ok := obj.(*corev1.Pod); ok {
 		return pod, true
@@ -94,20 +108,6 @@ func getCheckpointJob(ctx context.Context, clientset kubernetes.Interface, pod *
 	return job, nil
 }
 
-func isLeaseExpired(lease *coordinationv1.Lease, now time.Time) bool {
-	if lease == nil || lease.Spec.LeaseDurationSeconds == nil {
-		return true
-	}
-	last := lease.Spec.RenewTime
-	if last == nil {
-		last = lease.Spec.AcquireTime
-	}
-	if last == nil {
-		return true
-	}
-	return now.After(last.Time.Add(time.Duration(*lease.Spec.LeaseDurationSeconds) * time.Second))
-}
-
 func acquireCheckpointLease(ctx context.Context, clientset kubernetes.Interface, log logr.Logger, job *batchv1.Job, holderIdentity string) (bool, error) {
 	leaseName := job.Name
 	now := metav1.NewMicroTime(time.Now())
@@ -142,7 +142,7 @@ func acquireCheckpointLease(ctx context.Context, clientset kubernetes.Interface,
 		return true, nil
 	}
 
-	if !isLeaseExpired(existingLease, now.Time) &&
+	if !checkpointLeaseExpired(existingLease, now.Time) &&
 		existingLease.Spec.HolderIdentity != nil &&
 		*existingLease.Spec.HolderIdentity != holderIdentity {
 		return false, nil
@@ -150,7 +150,7 @@ func acquireCheckpointLease(ctx context.Context, clientset kubernetes.Interface,
 
 	existingLease.Spec.HolderIdentity = &holderIdentity
 	existingLease.Spec.LeaseDurationSeconds = &leaseDurationSeconds
-	if existingLease.Spec.AcquireTime == nil || isLeaseExpired(existingLease, now.Time) {
+	if existingLease.Spec.AcquireTime == nil || checkpointLeaseExpired(existingLease, now.Time) {
 		existingLease.Spec.AcquireTime = &now
 	}
 	existingLease.Spec.RenewTime = &now

deploy/snapshot/pkg/criu/dump.go → deploy/snapshot/internal/criu/dump.go

@@ -12,8 +12,8 @@ import (
 	"github.com/go-logr/logr"
 	"google.golang.org/protobuf/proto"
 
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/common"
-	"github.com/ai-dynamo/dynamo/deploy/snapshot/pkg/types"
+	snapshotruntime "github.com/ai-dynamo/dynamo/deploy/snapshot/internal/runtime"
+	"github.com/ai-dynamo/dynamo/deploy/snapshot/internal/types"
 )
 
 const (
@@ -35,7 +35,7 @@ func BuildDumpOptions(
 		maskedPaths = state.OCISpec.Linux.MaskedPaths
 	}
 
-	externalized, skipped := common.BuildMountPolicy(state.Mounts, state.RootFS, maskedPaths)
+	externalized, skipped := snapshotruntime.BuildMountPolicy(state.Mounts, state.RootFS, maskedPaths)
 	log.V(1).Info("Resolved mount policy for CRIU dump",
 		"externalized_count", len(externalized),
 		"skipped_count", len(skipped),