Merge pull request kubernetes#47179 from ddysher/local-isolation-fix

Automatic merge from submit-queue (batch tested with PRs 47883, 47179, 46966, 47982, 47945)

Fix local isolation for pod requesting only overlay or scratch

**What this PR does / why we need it**:

Fix overlay resource predicates for pod with only overlay or scratch storage request.

E.g. the following pod can pass predicate even if overlay is only 512Gi.
```yaml
apiVersion: v1
kind: Pod
metadata:
  name: pod
spec:
  containers:
  - name: nginx
    image: nginx
    resources:
      requests:
        storage.kubernetes.io/overlay: 1024Gi
```

similarly, following pod will also pass predicate
```yaml
apiVersion: v1
kind: Pod
metadata:
  name: pod
spec:
  containers:
  - name: nginx
    image: nginx
    volumeMounts:
    - name: data
      mountPath: /data
  volumes:
  - name: data
    emptyDir:
      sizeLimit: 1024Gi
```

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes kubernetes#47798

**Special notes for your reviewer**:

**Release note**:

```release-note
```

@jingxu97 @vishh @dashpole

plugin/pkg/scheduler/algorithm/predicates/predicates.go

@@ -584,7 +584,7 @@ func PodFitsResources(pod *v1.Pod, meta interface{}, nodeInfo *schedulercache.No
 		// We couldn't parse metadata - fallback to computing it.
 		podRequest = GetResourceRequest(pod)
 	}
-	if podRequest.MilliCPU == 0 && podRequest.Memory == 0 && podRequest.NvidiaGPU == 0 && len(podRequest.OpaqueIntResources) == 0 {
+	if podRequest.MilliCPU == 0 && podRequest.Memory == 0 && podRequest.NvidiaGPU == 0 && podRequest.StorageOverlay == 0 && podRequest.StorageScratch == 0 && len(podRequest.OpaqueIntResources) == 0 {
 		return len(predicateFails) == 0, predicateFails, nil
 	}
 

plugin/pkg/scheduler/algorithm/predicates/predicates_test.go

@@ -435,7 +435,7 @@ func TestPodFitsResources(t *testing.T) {
 			nodeInfo: schedulercache.NewNodeInfo(
 				newResourcePod(schedulercache.Resource{MilliCPU: 10, Memory: 10, StorageOverlay: 20})),
 			fits: false,
-			test: "due to init container scratch disk",
+			test: "due to container scratch disk",
 			reasons: []algorithm.PredicateFailureReason{
 				NewInsufficientResourceError(v1.ResourceCPU, 1, 10, 10),
 				NewInsufficientResourceError(v1.ResourceStorageScratch, 1, 20, 20),
@@ -453,7 +453,17 @@ func TestPodFitsResources(t *testing.T) {
 			nodeInfo: schedulercache.NewNodeInfo(
 				newResourcePod(schedulercache.Resource{MilliCPU: 2, Memory: 2, StorageOverlay: 5})),
 			fits: false,
-			test: "request exceeds allocatable",
+			test: "request exceeds allocatable overlay storage resource",
+			reasons: []algorithm.PredicateFailureReason{
+				NewInsufficientResourceError(v1.ResourceStorageScratch, 18, 5, 20),
+			},
+		},
+		{
+			pod: newResourcePod(schedulercache.Resource{StorageOverlay: 18}),
+			nodeInfo: schedulercache.NewNodeInfo(
+				newResourcePod(schedulercache.Resource{MilliCPU: 2, Memory: 2, StorageOverlay: 5})),
+			fits: false,
+			test: "request exceeds allocatable overlay storage resource",
 			reasons: []algorithm.PredicateFailureReason{
 				NewInsufficientResourceError(v1.ResourceStorageScratch, 18, 5, 20),
 			},
@@ -471,17 +481,26 @@ func TestPodFitsResources(t *testing.T) {
 			},
 		},
 		{
-			pod:           newResourcePod(schedulercache.Resource{MilliCPU: 1, Memory: 1, StorageOverlay: 10}),
-			emptyDirLimit: 15,
-			storageMedium: v1.StorageMediumMemory,
+			pod:           newResourcePod(schedulercache.Resource{}),
+			emptyDirLimit: 25,
+			storageMedium: v1.StorageMediumDefault,
 			nodeInfo: schedulercache.NewNodeInfo(
 				newResourcePod(schedulercache.Resource{MilliCPU: 2, Memory: 2, StorageOverlay: 5})),
-			fits: true,
+			fits: false,
 			test: "storage scratchrequest exceeds allocatable",
 			reasons: []algorithm.PredicateFailureReason{
 				NewInsufficientResourceError(v1.ResourceStorageScratch, 25, 5, 20),
 			},
 		},
+		{
+			pod:           newResourcePod(schedulercache.Resource{MilliCPU: 1, Memory: 1, StorageOverlay: 10}),
+			emptyDirLimit: 15,
+			storageMedium: v1.StorageMediumMemory,
+			nodeInfo: schedulercache.NewNodeInfo(
+				newResourcePod(schedulercache.Resource{MilliCPU: 2, Memory: 2, StorageOverlay: 5})),
+			fits: true,
+			test: "pod fit with memory medium",
+		},
 	}
 
 	for _, test := range storagePodsTests {