return nil, fmt.Errorf("directory %v does not exist and could not be created: %w", opts.Directory, err)
	}

	if opts.FileNameFunc == nil {
		opts.FileNameFunc = defaultFilenameFunc
	}

	pr, pw := xioutil.WaitPipe()

	w := &Writer{
		opts: opts,
		pw:   pw,
		pr:   pr,
	}

	if w.f == nil {
		if err := w.rotate(); err != nil {
			return nil, fmt.Errorf("Failed to create log file: %w", err)
		}
	}

	if err != nil {
		return nil, err
	}

	if unlockOnDefer {
		unlockOnDefer = fi.InlineData() || len(fi.Data) > 0
	}

	pr, pw := xioutil.WaitPipe()
	go func() {
		pw.CloseWithError(er.getObjectWithFileInfo(ctx, bucket, object, off, length, pw, fi, metaArr, onlineDisks))
	}()

	// Cleanup function to cause the go routine above to exit, in