Skip if pod does not have claims.

pkg/controller/volume/persistentvolume/scheduler_binder.go

@@ -142,10 +142,40 @@ func (b *volumeBinder) GetBindingsCache() PodBindingCache {
 	return b.podBindingCache
 }
 
+func podHasClaims(pod *v1.Pod) bool {
+	for _, vol := range pod.Spec.Volumes {
+		if vol.PersistentVolumeClaim != nil {
+			return true
+		}
+	}
+	return false
+}
+
 // FindPodVolumes caches the matching PVs and PVCs to provision per node in podBindingCache.
 // This method intentionally takes in a *v1.Node object instead of using volumebinder.nodeInformer.
 // That's necessary because some operations will need to pass in to the predicate fake node objects.
 func (b *volumeBinder) FindPodVolumes(pod *v1.Pod, node *v1.Node) (unboundVolumesSatisfied, boundVolumesSatisfied bool, err error) {
+	podName := getPodName(pod)
+
+	// Warning: Below log needs high verbosity as it can be printed several times (#60933).
+	klog.V(5).Infof("FindPodVolumes for pod %q, node %q", podName, node.Name)
+
+	// Initialize to true for pods that don't have volumes
+	unboundVolumesSatisfied = true
+	boundVolumesSatisfied = true
+	start := time.Now()
+	defer func() {
+		VolumeSchedulingStageLatency.WithLabelValues("predicate").Observe(time.Since(start).Seconds())
+		if err != nil {
+			VolumeSchedulingStageFailed.WithLabelValues("predicate").Inc()
+		}
+	}()
+
+	if !podHasClaims(pod) {
+		// Fast path
+		return unboundVolumesSatisfied, boundVolumesSatisfied, nil
+	}
+
 	var (
 		matchedClaims     []*bindingInfo
 		provisionedClaims []*v1.PersistentVolumeClaim
@@ -164,22 +194,6 @@ func (b *volumeBinder) FindPodVolumes(pod *v1.Pod, node *v1.Node) (unboundVolume
 		b.podBindingCache.UpdateBindings(pod, node.Name, matchedClaims, provisionedClaims)
 	}()
 
-	podName := getPodName(pod)
-
-	// Warning: Below log needs high verbosity as it can be printed several times (#60933).
-	klog.V(5).Infof("FindPodVolumes for pod %q, node %q", podName, node.Name)
-
-	// Initialize to true for pods that don't have volumes
-	unboundVolumesSatisfied = true
-	boundVolumesSatisfied = true
-	start := time.Now()
-	defer func() {
-		VolumeSchedulingStageLatency.WithLabelValues("predicate").Observe(time.Since(start).Seconds())
-		if err != nil {
-			VolumeSchedulingStageFailed.WithLabelValues("predicate").Inc()
-		}
-	}()
-
 	// The pod's volumes need to be processed in one call to avoid the race condition where
 	// volumes can get bound/provisioned in between calls.
 	boundClaims, claimsToBind, unboundClaimsImmediate, err := b.getPodVolumes(pod)