> According to unionfs document 'Technical Report FSL-04-01b',
> unionfs_rename should copyup correctly. Shoud we address the bug of
> copyup in rename first?

Finally, I've found some comments left in rename.c,

                /* We can't copyup a directory, because it may involve huge
                 * numbers of children, etc.  Doing that in the kernel would
                 * be ungood.
                 */

Well, we have to admit.


Junjiro Okajima
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