testdata, err := os.ReadDir("testdata")
	if err != nil {
		f.Fatalf("failed to read testdata directory: %s", err)
	}
	for _, de := range testdata {
		if de.IsDir() {
			continue
		}
		b, err := os.ReadFile(filepath.Join("testdata", de.Name()))
		if err != nil {
			f.Fatalf("failed to read testdata: %s", err)
		}
		f.Add(b)
	}

	f.Fuzz(func(t *testing.T, b []byte) {

// tries to verify whether the disk has bitrot.
//
// Additionally ReadFile also starts reading from an offset. ReadFile
// semantics are same as io.ReadFull.
func (s *xlStorage) ReadFile(ctx context.Context, volume string, path string, offset int64, buffer []byte, verifier *BitrotVerifier) (int64, error) {
	if offset < 0 {
		return 0, errInvalidArgument
	}

	volumeDir, err := s.getVolDir(volume)
	if err != nil {

	// File operations.
	ListDir(ctx context.Context, origvolume, volume, dirPath string, count int) ([]string, error)
	ReadFile(ctx context.Context, volume string, path string, offset int64, buf []byte, verifier *BitrotVerifier) (n int64, err error)
	AppendFile(ctx context.Context, volume string, path string, buf []byte) (err error)

			base = base[:idx]
		}
		for {
			// Automatically read "file.ext", "file-2.ext", "file-3.ext"...
			fn := base + ext
			if n > 1 {
				fn = fmt.Sprintf("%s-%d%s", base, n, ext)
			}

			if b, err := os.ReadFile(fn); err == nil {
				privateKeys = append(privateKeys, b)
				fmt.Println("Added private key from", fn)
			} else {
				break
			}
			n++
		}

		// file not found error.
		{"foo", "yourobject", 0, nil, true},
	}

	result := make([]byte, 100)
	for i, testCase := range testCases {
		result = result[testCase.offset:3]
		_, err := storage.ReadFile(t.Context(), testCase.volumeName, testCase.objectName, testCase.offset, result, nil)
		expectErr := (err != nil)

		if expectErr != testCase.expectErr {

		}
	}

	{
		buf := make([]byte, 5)
		// Test for negative offset.
		if _, err = xlStorage.ReadFile(t.Context(), volume, "myobject", -1, buf, v); err == nil {
			t.Fatalf("expected: error, got: <nil>")
		}
	}

	for range 2 {
		// Following block validates all ReadFile test cases.
		for i, testCase := range testCases {
			var n int64
			// Common read buffer.

	_, err = io.ReadFull(f, dst)
	return dst, st, err
}

// ReadFile reads the named file and returns the contents.
// A successful call returns err == nil, not err == EOF.
// Because ReadFile reads the whole file, it does not treat an EOF from Read
// as an error to be reported.
//
// passes NOATIME flag for reads on Unix systems to avoid atime updates.
func ReadFile(name string) ([]byte, error) {
	// Don't wrap with un-needed buffer.

  #  uses: ./.github/workflows/build-reusable.yml
  #  with:
  #    runner: 'linux-x86-n2-16'
  #    tfci: 'py313,linux_x86,rbe'

  #build-and-test-linux-x86-cuda:
  #  uses: ./.github/workflows/build-reusable.yml
  #  with:
  #    runner: 'linux-x86-n4-32'
  #    tfci: 'py313,linux_x86_cuda'

  #build-and-test-arm64:
  #  uses: ./.github/workflows/build-reusable.yml
  #  with:
  #    runner: 'linux-arm64-c4a-16'

}

func TestDummyDataGenerator(t *testing.T) {
	readAll := func(r io.Reader) string {
		b, _ := io.ReadAll(r)
		return string(b)
	}
	checkEq := func(a, b string) {
		if a != b {
			t.Fatalf("Unexpected equality failure")
		}
	}

	checkEq(readAll(NewDummyDataGen(0, 0)), "")

	checkEq(readAll(NewDummyDataGen(10, 0)), readAll(NewDummyDataGen(10, int64(len(alphabets)))))

		return nil, err
	}
	defer done(0, &err)

	return p.storage.ListDir(ctx, origvolume, volume, dirPath, count)
}

// Legacy API - does not have any deadlines
func (p *xlStorageDiskIDCheck) ReadFile(ctx context.Context, volume string, path string, offset int64, buf []byte, verifier *BitrotVerifier) (n int64, err error) {
	ctx, done, err := p.TrackDiskHealth(ctx, storageMetricReadFile, volume, path)
	if err != nil {