lastVersion := len(xlMeta.versions) == 0
	if !lastVersion {
		buf, err = xlMeta.AppendTo(metaDataPoolGet())
		defer metaDataPoolPut(buf)
		if err != nil {
			return err
		}

		return s.WriteAll(ctx, volume, pathJoin(path, xlStorageFormatFile), buf)
	}

	return s.deleteFile(volumeDir, pathJoin(volumeDir, path, xlStorageFormatFile), true, false)
}

	// Initialize a new xlStorage layer.
	storage, err := newLocalXLStorageWithDiskIdx(diskPath, 3)
	if err != nil {
		return nil, "", err
	}

	// Create a sample format.json file

    assertThat(stream.readBytes.total).isEqualTo(0L)
    assertThat(stream.takeHeaders()).isEqualTo(headersOf("a", "android"))
    val source = stream.source
    val buffer = Buffer()
    buffer.writeAll(source)
    assertThat(source.read(buffer, 1)).isEqualTo(-1)
    assertThat(buffer.size).isEqualTo(150)
    val synStream = peer.takeFrame()
    assertThat(synStream.type).isEqualTo(Http2.TYPE_HEADERS)

	}
	if (zb0001Mask & 0x1) == 0 { // if not omitted
		// write "V2Obj"
		err = en.Append(0xa5, 0x56, 0x32, 0x4f, 0x62, 0x6a)
		if err != nil {
			return
		}
		if z.ObjectV2 == nil {
			err = en.WriteNil()
			if err != nil {
				return
			}
		} else {
			// map header, size 1
			// write "DDir"
			err = en.Append(0x81, 0xa4, 0x44, 0x44, 0x69, 0x72)
			if err != nil {
				return
			}

	}
	if z.XferRateLrg == nil {
		err = en.WriteNil()
		if err != nil {
			return
		}
	} else {
		err = z.XferRateLrg.EncodeMsg(en)
		if err != nil {
			err = msgp.WrapError(err, "XferRateLrg")
			return
		}
	}
	// write "st"
	err = en.Append(0xa2, 0x73, 0x74)
	if err != nil {
		return
	}
	if z.XferRateSml == nil {
		err = en.WriteNil()
		if err != nil {
			return
		}

		}
		if (zb0001Mask & 0x80) == 0 { // if not omitted
			// write "ats"
			err = en.Append(0xa3, 0x61, 0x74, 0x73)
			if err != nil {
				return
			}
			if z.AllTierStats == nil {
				err = en.WriteNil()
				if err != nil {
					return
				}
			} else {
				// map header, size 1
				// write "ts"
				err = en.Append(0x81, 0xa2, 0x74, 0x73)
				if err != nil {
					return
				}