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Re: union mounts, mfs, and newsyslog

On Mon, Jul 06, 2009 at 10:30:57PM -0400, matthew sporleder wrote:
 > > If you want to make it work, the first step is probably to figure out
 > > what it's doing: create a simple test case that exhibits the same
 > > behavior (this is not necessarily so trivial...) and then poke into
 > > the kernel to figure out what union_rename thinks it's doing.
 > >
 > > However... there are a number of more or less insoluble problems with
 > > rename and unionfs (in more complicated cases) and you might prefer
 > > not to get involved.
 > >
 > /* ren.c */
 > [snip]
 > I guess when a rename is passed to the lower layer it should be turned
 > into a copy at the upper layer and then a rename.

Yeah, it should, and I would have thought it would have, but, well,
it's onionfs. I suspect half the places that should trigger copyups

Can you file this in a PR so it doesn't get forgotten? It is unlikely
that anyone's going to fix it anytime soon, unless you do (and I'd
sort of advise against trying) but there's always a possibility that
someone sometime will make a serious try at fixing up unionfs.

David A. Holland

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