return errRPCAPIVersionUnsupported
	case errServerTimeMismatch.Error():
		return errServerTimeMismatch
	case io.EOF.Error():
		return io.EOF
	case io.ErrUnexpectedEOF.Error():
		return io.ErrUnexpectedEOF
	case errDiskStale.Error():
		return errDiskNotFound
	case errDiskNotFound.Error():
		return errDiskNotFound
	case errMaxVersionsExceeded.Error():
		return errMaxVersionsExceeded

// read. On return, n == len(buf) if and only if err == nil. n == 0
// for io.EOF.
//
// If an EOF happens after reading some but not all the bytes,
// ReadFile returns ErrUnexpectedEOF.
//
// If the BitrotVerifier is not nil or not verified ReadFile
// tries to verify whether the disk has bitrot.
//
// Additionally ReadFile also starts reading from an offset. ReadFile

			volume, "myobject", 0, 16,
			[]byte("hello, world"),
			io.ErrUnexpectedEOF,
		},
		// Reading from an offset success. - 7
		{
			volume, "myobject", 7, 5,
			[]byte("world"), nil,
		},
		// Reading from an object but buffer size greater. - 8
		{
			volume, "myobject",
			7, 8,
			[]byte("world"),
			io.ErrUnexpectedEOF,
		},
		// Seeking ahead returns io.EOF. - 9
		{

		done <- err
		err = rb.TryWriteByte(0)
		done <- err
	}()

	buf := make([]byte, 100)
	n, err := io.ReadFull(rb, buf)
	if err != nil && err != io.ErrUnexpectedEOF {
		t.Fatalf("got: %q; want: %q", err, io.ErrUnexpectedEOF)
	}
	for writeErr := range done {
		if writeErr != ErrWriteOnClosed {
			t.Errorf("got: %q; want: %q", writeErr, ErrWriteOnClosed)
		} else {
			t.Log("ok")
		}

			memset(p[n:n+repeat], part.b)
			n += repeat
			if n == len(p) {
				return
			}
			skipBytes = 0
		}
	}
	if n != len(p) {
		err = io.ErrUnexpectedEOF
	}
	return
}

// Just testing the rleBuffer used in the Zip64 test above. Not used by the zip code.
func TestRLEBuffer(t *testing.T) {
	b := new(rleBuffer)
	var all []byte

	connectTime := time.Now()
	for {
		n, err := io.CopyN(xioutil.Discard, r.Body, 128*humanize.KiByte)
		atomic.AddUint64(&globalSiteNetPerfRX.RX, uint64(n))
		if err != nil && err != io.EOF && err != io.ErrUnexpectedEOF {
			// If there is a disconnection before globalNetPerfMinDuration (we give a margin of error of 1 sec)
			// would mean the network is not stable. Logging here will help in debugging network issues.

		apiErr := InsufficientWriteQuorum{}
		if len(params) >= 1 {
			apiErr.Bucket = params[0]
		}
		if len(params) >= 2 {
			apiErr.Object = decodeDirObject(params[1])
		}
		return apiErr
	case io.ErrUnexpectedEOF.Error(), io.ErrShortWrite.Error(), context.Canceled.Error(), context.DeadlineExceeded.Error():
		apiErr := IncompleteBody{}
		if len(params) >= 1 {
			apiErr.Bucket = params[0]
		}
		if len(params) >= 2 {

	if readLastByte && err == nil {
		_, err = mustReadFull(rs, []byte{0})
		sw.pos++
	}

	n = sw.pos - pos0
	switch {
	case err == io.EOF:
		return n, io.ErrUnexpectedEOF
	case err == ErrWriteTooLong:
		return n, errMissData // Not possible; implies bug in validation logic
	case err != nil:
		return n, err
	case sw.logicalRemaining() == 0 && sw.physicalRemaining() > 0:

			testRemaining{0, 0},
		},
	}, {
		maker: makeSparse{makeReg{4, "abcd"}, sparseHoles{{2, 3}}, 8},
		tests: []testFnc{
			testReadFrom{fileOps{"ab", int64(3), "cd"}, 7, io.ErrUnexpectedEOF},
			testRemaining{1, 0},
		},
	}, {
		maker: makeSparse{makeReg{4, "abcd"}, sparseHoles{{2, 3}}, 8},
		tests: []testFnc{
			testReadFrom{fileOps{"ab", int64(3), "cde"}, 7, errMissData},

}

var errorWriterToTests = []errorWriterToTest{
	{1, 0, nil, io.ErrClosedPipe, io.ErrClosedPipe},
	{0, 1, io.ErrClosedPipe, nil, io.ErrClosedPipe},
	{0, 0, io.ErrUnexpectedEOF, io.ErrClosedPipe, io.ErrUnexpectedEOF},
	{0, 1, io.EOF, nil, nil},
}

func TestReaderWriteToErrors(t *testing.T) {
	for i, rw := range errorWriterToTests {
		r := NewReader(rw)