From: Rob Landley <rob@landley.net>
To: Martin Steigerwald <Martin@lichtvoll.de>
Cc: tux3@phunq.net,
Daniel Phillips <daniel.raymond.phillips@gmail.com>,
Theodore Ts'o <tytso@mit.edu>,
"Darrick J. Wong" <darrick.wong@oracle.com>,
David Lang <david@lang.hm>,
linux-kernel@vger.kernel.org, tux3@tux3.org,
linux-fsdevel@vger.kernel.org
Subject: Re: Tux3 Report: Initial fsck has landed
Date: Wed, 20 Mar 2013 01:54:53 -0500 [thread overview]
Message-ID: <1363762493.15703.46@driftwood> (raw)
In-Reply-To: <201303200000.33356.Martin@lichtvoll.de> (from Martin@lichtvoll.de on Tue Mar 19 18:00:32 2013)
On 03/19/2013 06:00:32 PM, Martin Steigerwald wrote:
> Am Dienstag, 29. Januar 2013 schrieb Daniel Phillips:
> > On Mon, Jan 28, 2013 at 5:40 PM, Theodore Ts'o <tytso@mit.edu>
> wrote:
> > > On Mon, Jan 28, 2013 at 04:20:11PM -0800, Darrick J. Wong wrote:
> > >> On Mon, Jan 28, 2013 at 03:27:38PM -0800, David Lang wrote:
> > >> > The situation I'm thinking of is when dealing with VMs, you
> make a
> > >> > filesystem image once and clone it multiple times. Won't that
> end up
> > >> > with the same UUID in the superblock?
> > >>
> > >> Yes, but one ought to be able to change the UUID a la tune2fs
> > >> -U. Even still... so long as the VM images have a different UUID
> > >> than the fs that they live on, it ought to be fine.
> > >
> > > ... and this is something most system administrators should be
> > > familiar with. For example, it's one of those things that Norton
> > > Ghost when makes file system image copes (the equivalent of
> "tune2fs
> > > -U random /dev/XXX")
> >
> > Hmm, maybe I missed something but it does not seem like a good idea
> > to use the volume UID itself to generate unique-per-volume metadata
> > hashes, if users expect to be able to change it. All the metadata
> hashes
> > would need to be changed.
>
> I believe that is what BTRFS is doing.
>
> And yes, AFAIK there is no easy way to change the UUID of a BTRFS
> filesystems
> after it was created.
I'm confused, http://tux3.org/ lists a bunch of dates from 5 years ago,
then nothing. Is this project dead or not?
Rob
next prev parent reply other threads:[~2013-03-20 6:54 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-28 5:55 Tux3 Report: Initial fsck has landed Daniel Phillips
2013-01-28 6:02 ` David Lang
2013-01-28 6:13 ` Daniel Phillips
2013-01-28 14:12 ` Theodore Ts'o
2013-01-28 23:27 ` David Lang
2013-01-29 0:20 ` Darrick J. Wong
2013-01-29 1:40 ` Theodore Ts'o
2013-01-29 4:34 ` Daniel Phillips
2013-03-19 23:00 ` Martin Steigerwald
2013-03-20 4:04 ` David Lang
2013-03-20 4:08 ` Daniel Phillips
2013-03-20 10:29 ` Martin Steigerwald
2013-03-20 6:54 ` Rob Landley [this message]
2013-03-21 1:49 ` Daniel Phillips
2013-03-22 1:57 ` Dave Chinner
2013-03-22 5:41 ` Daniel Phillips
2013-03-26 6:42 ` Christian Stroetmann
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