test: limit nfs snapshot test on a few regions

fix

test/e2e/dynamic_provisioning_test.go

@@ -697,7 +697,6 @@ var _ = ginkgo.Describe("Dynamic Provisioning", func() {
 			Cmd: "echo 'hello world' > /mnt/test-1/data",
 			Volumes: []testsuites.VolumeDetails{
 				{
-					FSType:    "ext4",
 					ClaimSize: "10Gi",
 					VolumeMount: testsuites.VolumeMountDetails{
 						NameGenerate:      "test-volume-",
@@ -724,13 +723,15 @@ var _ = ginkgo.Describe("Dynamic Provisioning", func() {
 	ginkgo.It("should create a pod, write and read to it, take a nfs volume snapshot, and validate whether it is ready to use [file.csi.azure.com]", func(ctx ginkgo.SpecContext) {
 		skipIfTestingInWindowsCluster()
 		skipIfUsingInTreeVolumePlugin()
+		if !supportSnapshotwithNFS {
+			ginkgo.Skip("take snapshot on nfs file share is not supported on current region")
+		}
 
 		pod := testsuites.PodDetails{
 			Cmd: "echo 'hello world' > /mnt/test-1/data",
 			Volumes: []testsuites.VolumeDetails{
 				{
-					FSType:    "ext4",
-					ClaimSize: "10Gi",
+					ClaimSize: "100Gi",
 					VolumeMount: testsuites.VolumeMountDetails{
 						NameGenerate:      "test-volume-",
 						MountPathGenerate: "/mnt/test-",

test/e2e/suite_test.go

@@ -62,7 +62,8 @@ var (
 		"csi.storage.k8s.io/provisioner-secret-namespace": "default",
 		"csi.storage.k8s.io/node-stage-secret-namespace":  "default",
 	}
-	supportZRSwithNFS bool
+	supportZRSwithNFS      bool
+	supportSnapshotwithNFS bool
 )
 
 type testCmd struct {
@@ -105,6 +106,14 @@ var _ = ginkgo.BeforeSuite(func(ctx ginkgo.SpecContext) {
 			}
 		}
 
+		// check whether current region supports snapshot with NFS protocol
+		supportedRegions = []string{"canadacentral", "uksouth", "francesouth", "francecentral", "germanywestcentral"}
+		for _, region := range supportedRegions {
+			if creds.Location == region {
+				supportSnapshotwithNFS = true
+			}
+		}
+
 		// Install Azure File CSI Driver on cluster from project root
 		e2eBootstrap := testCmd{
 			command:  "make",