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Date:      Sun, 9 Nov 2008 18:09:00 +0100
From:      Pawel Jakub Dawidek <pjd@FreeBSD.org>
To:        Kostik Belousov <kostikbel@gmail.com>
Cc:        Steve Kargl <sgk@troutmask.apl.washington.edu>, freebsd-geom@freebsd.org
Subject:   Re: RW and RO semantic and unable to umount a partition?
Message-ID:  <20081109170900.GC2340@garage.freebsd.pl>
In-Reply-To: <20081109133948.GN18100@deviant.kiev.zoral.com.ua>
References:  <20081107192150.GA3007@troutmask.apl.washington.edu> <20081109111917.GB2340@garage.freebsd.pl> <20081109133948.GN18100@deviant.kiev.zoral.com.ua>

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On Sun, Nov 09, 2008 at 03:39:48PM +0200, Kostik Belousov wrote:
> On Sun, Nov 09, 2008 at 12:19:17PM +0100, Pawel Jakub Dawidek wrote:
> > Not sure why. It might be that file system changed under you (node n18
> > modified it), so now n17 sees some strange inconsistencies.
> >=20
> > All in all, you can eigher mount the same file system multiple times
> > read-only OR one time read-write and zero times read-only.
>=20
> Better not mount ufs volume more then once regardless of the mount mode.
> See the start of the ffs_mountfs(). ffs mount modifies devvp bufobj with
> reference to geom consumer.

Yes, I know, I even had patch for that, although here I was talking
about mounting the same FS read-only on few separate machines using ggate.

--=20
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd@FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!

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