freebsd stable - Sep 2007 - Unionfs patchset p19 commit?

Kurt Jaeger wrote:
> Hi!
> 
>> I have a big hope to get merged into FreeBSD until
>> 7-RELEASE. Progress is step by step slowly, but going
>> forward absolutely.  If you have interest in unionfs
>> improvements, push your passion to re@ and fs@ committers ;-)
> 
> Did you have a chance to look into this ?
> 
> http://lists.freebsd.org/pipermail/freebsd-stable/2007-June/035798.html
> 
> Thanks!
Already we have fixed above issue. But it is not in a first merge
patches bunch. FAI, I include a patch that has should been patched
after p19. Try it. (unionfs6 for stable, unionfs for current).

First, we should merge current unionfs patch into current tree.
Above issue patch will be merged after that work. Well, whatsoever,
we should do first merge work done :)

-- 
   Daichi GOTO, http://people.freebsd.org/~daichi
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Hi!
> >>I have a big hope to get merged into FreeBSD until
> >>7-RELEASE. Progress is step by step slowly, but going
> >>forward absolutely.  If you have interest in unionfs
> >>improvements, push your passion to re@ and fs@ committers ;-)
> >
> >Did you have a chance to look into this ?
> >
> >http://lists.freebsd.org/pipermail/freebsd-stable/2007-June/035798.html
> Already we have fixed above issue.
[...]

I'm compiling this patch on my test system right now.

Another issue is userland support for unionfs, e.g. in fstat,
as described on this page:

http://c0mplx.org/src/fstat-unionfs-patch/

Do you plan to analyse/investigate this topic ?

There's another topic if one uses unionfs in jail() setups: How to
backup the files, and only those files that a different from
the base ?

If I traverse a mounted unionfs, how do I know where data is coming
from, the lower mount or the higher mount ?

If I can't tell the difference, I'll backup quite a lot of stuff
multiple times.

I've experimented a little and found no easy way to tell lower
from upper unless I open the file (which sounds expensive). 
Have a look at http://c0mplx.org/src/isunionfs.c -- does this
sound like a way to go ?

-- 
pi@c0mplx.org           +49 171 3101372                        13 years to go !