// via active healing.
			dg.Go(func() error {
				return disks[index].DeleteVersion(context.Background(), dstBucket, dstEntry, metadata[index], false, DeleteOptions{
					UndoWrite:  true,
					OldDataDir: dataDirs[index],
				})
			}, index)
		}
		dg.Wait()
	}
	var dataDir string
	var versions []byte
	if err == nil {

		defer metaDataPoolPut(buf)
		if err != nil {
			return err
		}

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

	if opts.UndoWrite && opts.OldDataDir != "" {
		return renameAll(pathJoin(filePath, opts.OldDataDir, xlStorageFormatFileBackup), pathJoin(filePath, xlStorageFormatFile), filePath)
	}