dstBuf, err = xioutil.ReadFile(dstFilePath)
				if err != nil && !osIsNotExist(err) {
					return res, osErrToFileErr(err)
				}
			}
		}
	}

	// Preserve all the legacy data, could be slow, but at max there can be 10,000 parts.
	currentDataPath := pathJoin(dstVolumeDir, dstPath)

	var xlMeta xlMetaV2
	var legacyPreserved bool
	var legacyEntries []string
	if len(dstBuf) > 0 {