return
	}

	ro, err := jd.OpenRO()
	switch {
	case errors.Is(err, os.ErrNotExist):
		return // No read-only journal to process; nothing to do.
	case err != nil:
		logger.LogIf(ctx, fmt.Errorf("tier-journal: failed open read-only journal for processing %s", err))
		return
	}
	defer ro.Close()
	mr := msgpNewReader(ro)
	defer readMsgpReaderPoolPut(mr)

	done := false