if err != nil {
			t.Fatalf("Unable to initialize xlStorage, %s", err)
		}

		// change backend permissions for MakeVol error.
		if err = os.Chmod(permDeniedDir, 0o400); err != nil {
			t.Fatalf("Unable to change permission to temporary directory %v. %v", permDeniedDir, err)
		}

		if err := xlStorageNew.MakeVol(context.Background(), "test-vol"); err != errDiskAccessDenied {
			t.Fatalf("expected: %s, got: %s", errDiskAccessDenied, err)

	disk, err := newLocalXLStorage(tmpPath)
	if err != nil {
		t.Fatalf("Initializing xlStorage failed with %s.", err)
	}

	// Attempt to create a volume to verify the permissions later.
	// MakeVol creates 0777.
	if err = disk.MakeVol(context.Background(), testCase.volName); err != nil {
		t.Fatalf("Creating a volume failed with %s expected to pass.", err)
	}

	// Stat to get permissions bits.

	if err := d.calcError(); err != nil {
		return err
	}
	return d.disk.MakeVolBulk(ctx, volumes...)
}

func (d *naughtyDisk) MakeVol(ctx context.Context, volume string) (err error) {
	if err := d.calcError(); err != nil {
		return err
	}
	return d.disk.MakeVol(ctx, volume)
}

func (d *naughtyDisk) ListVols(ctx context.Context) (vols []VolInfo, err error) {
	if err := d.calcError(); err != nil {

	// Instantiate posix object to manage a disk
	fs, err := newLocalXLStorage(dir)
	if err != nil {
		t.Fatal(err)
	}

	// Create volume to use in conjunction with other StorageAPI's file API(s)
	err = fs.MakeVol(context.Background(), "voldir")
	if err != nil {
		t.Fatal(err)
	}

	for i, test := range testCases {
		t.Run(fmt.Sprint(i), func(t *testing.T) {

		// Make a volume entry on all underlying storage disks.
		for index := range localDrives {
			index := index
			g.Go(func() error {
				if beforeState[index] == madmin.DriveStateMissing {
					err := localDrives[index].MakeVol(ctx, bucket)
					if err == nil {
						afterState[index] = madmin.DriveStateOk
					}
					return err
				}
				return errs[index]
			}, index)
		}

		errs = g.Wait()
	}

	disks := make([]StorageAPI, len(diskPaths))
	var err error
	for i := range diskPaths {
		disks[i], diskPaths[i], err = newXLStorageTestSetup(tb)
		if err != nil {
			return nil, err
		}
		err = disks[i].MakeVol(context.Background(), "testbucket")
		if err != nil {
			return nil, err
		}
	}
	return &erasureTestSetup{dataBlocks, parityBlocks, blockSize, diskPaths, disks}, nil

	registerStorageRESTHandlers(tg.Mux[1], poolEps, tg.Managers[1])

	storage := globalLocalSetDrives[0][0][0]
	if err = storage.MakeVol(context.Background(), "foo"); err != nil {
		t.Fatalf("unexpected error %v", err)
	}

	if err = storage.MakeVol(context.Background(), "bar"); err != nil {
		t.Fatalf("unexpected error %v", err)
	}

	restClient, err := newStorageRESTClient(endpoint, false, tg.Managers[0])

	tmpDir := t.TempDir()

	volume := "testvol"
	filePath := "testfile"

	disk, err := newLocalXLStorage(tmpDir)
	if err != nil {
		t.Fatal(err)
	}

	disk.MakeVol(context.Background(), volume)

	writer := newBitrotWriter(disk, "", volume, filePath, 35, bitrotAlgo, 10)

	_, err = writer.Write([]byte("aaaaaaaaaa"))
	if err != nil {
		t.Fatal(err)
	}

	NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry, scanMode madmin.HealScanMode, shouldSleep func() bool) (dataUsageCache, error)

	// Volume operations.
	MakeVol(ctx context.Context, volume string) (err error)
	MakeVolBulk(ctx context.Context, volumes ...string) (err error)
	ListVols(ctx context.Context) (vols []VolInfo, err error)

func (client *storageRESTClient) MakeVolBulk(ctx context.Context, volumes ...string) (err error) {
	return errInvalidArgument
}

// MakeVol - create a volume on a remote disk.
func (client *storageRESTClient) MakeVol(ctx context.Context, volume string) (err error) {
	return errInvalidArgument
}

// ListVols - List all volumes on a remote disk.