Date: Mon, 1 Aug 2005 20:55:34 +0200 From: Jeremie Le Hen <jeremie@le-hen.org> To: Kevin Oberman <oberman@es.net> Cc: current@freebsd.org, fs@freebsd.org Subject: Re: More unionfs madness Message-ID: <20050801185534.GD68965@obiwan.tataz.chchile.org> In-Reply-To: <20050801184017.5DFFA5D07@ptavv.es.net> References: <42EE4B08.8090107@freesbie.org> <20050801184017.5DFFA5D07@ptavv.es.net>
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Hi Kevin, Dario and all,
> I don't know about "totally broken" I use unionfs regularly on my system
> and it's been fine. I'll admit that the use (profile) is fairly
> straight-forward, but it's given me no problems.
profile.sh uses the "union" mount(8) option (MNT_UNION), which has far
more simpler semantics as the unionfs filesystem. The latter is indeed
totally broken as a simple rename(2) or rmdir(2) would lead to a panic,
IIRC.
BTW, if you are interested in MNT_UNION semantics, I made a patch for
the profile.sh(8) manpage (among other one which are waiting for Tobias
to be merged :-), which explains clearly what it is supposed to do.
The real unionfs filesystem is described in mount_unionfs(8) manpage.
Have a look here :
http://jeremie.le-hen.org/~tataz/patches/FreeBSD/profile.sh/
Best regards,
--
Jeremie Le Hen
< jeremie at le-hen dot org >< ttz at chchile dot org >
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