Goswin von Brederlow: > The problem is that /delta-fs/path/file would suddenly be a composite > of the new file /union/read-only/path/file and any stored delta > information in /union/read-write/path/file of the old file. Yes. And I am afraid stat.st_blocks will be incorrect too. But it may be a smaller problem for who think there is another bigger advantage. It might be just a trade off. J. R. Okajima -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html