Unionfs patchset p19 commit?
Kurt Jaeger
lists at c0mplx.org
Tue Sep 18 19:16:45 PDT 2007
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 at c0mplx.org +49 171 3101372 13 years to go !
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