Explicitly specify Container Count

This change workarounds 'Drive "root_drive" could not be found' issue.
The way we manage stub drives may not right, but we are not going to fix
the issue right now, in this pull request.

Signed-off-by: Kazuyoshi Kato <[email protected]>

Author: kzys

runtime/service_integ_test.go

@@ -562,9 +562,27 @@ func startAndWaitTask(ctx context.Context, t *testing.T, c containerd.Container)
 	return stdout.String()
 }
 
-func testCreateContainerWithSameName(t *testing.T, opts ...oci.SpecOpts) {
+func testCreateContainerWithSameName(t *testing.T, vmID string) {
 	ctx := namespaces.WithNamespace(context.Background(), "default")
-	withNewSpec := containerd.WithNewSpec(append([]oci.SpecOpts{oci.WithProcessArgs("echo", "hello")}, opts...)...)
+
+	pluginClient, err := ttrpcutil.NewClient(containerdSockPath + ".ttrpc")
+	require.NoError(t, err, "failed to create ttrpc client")
+
+	// Explicitly specify Container Count = 2
+	// TODO: shouldn't it work without specifying the count?
+	fcClient := fccontrol.NewFirecrackerClient(pluginClient.Client())
+	_, err = fcClient.CreateVM(ctx, &proto.CreateVMRequest{
+		VMID: vmID,
+		RootDrive: &proto.FirecrackerDrive{
+			PathOnHost:   defaultRootfsPath,
+			IsReadOnly:   true,
+			IsRootDevice: true,
+		},
+		ContainerCount: 2,
+	})
+	require.NoError(t, err)
+
+	withNewSpec := containerd.WithNewSpec(oci.WithProcessArgs("echo", "hello"), firecrackeroci.WithVMID(vmID))
 
 	client, err := containerd.New(containerdSockPath, containerd.WithDefaultRuntime(firecrackerRuntime))
 	require.NoError(t, err, "unable to create client to containerd service at %s, is containerd running?", containerdSockPath)
@@ -614,6 +632,8 @@ func testCreateContainerWithSameName(t *testing.T, opts ...oci.SpecOpts) {
 func TestCreateContainerWithSameName_Isolated(t *testing.T) {
 	internal.RequiresIsolation(t)
 
-	testCreateContainerWithSameName(t)
-	testCreateContainerWithSameName(t, firecrackeroci.WithVMID("reuse-same-vm"))
+	testCreateContainerWithSameName(t, "")
+
+	vmID := fmt.Sprintf("same-vm-%d", time.Now().UnixNano())
+	testCreateContainerWithSameName(t, vmID)
 }