g := errgroup.WithNErrs(len(onlineDisks))

	objectParts := make([][]string, len(onlineDisks))
	// List uploaded parts from drives.
	for index := range onlineDisks {
		g.Go(func() (err error) {
			if onlineDisks[index] == nil {
				return errDiskNotFound
			}
			objectParts[index], err = onlineDisks[index].ListDir(ctx, minioMetaMultipartBucket, minioMetaMultipartBucket, partPath, -1)