From: Christoph Anton Mitterer <calestyo@scientia.net>
To: Jiri Kanicky <j@ganomi.com>, Hugo Mills <hugo@carfax.org.uk>,
linux-btrfs@vger.kernel.org
Subject: Re: How to change BTRFS filesystem UUID
Date: Mon, 28 Dec 2015 00:01:39 +0100 [thread overview]
Message-ID: <1451257299.6320.3.camel@scientia.net> (raw)
In-Reply-To: <5680034D.7030509@ganomi.com>
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On Mon, 2015-12-28 at 02:27 +1100, Jiri Kanicky wrote:
> Thanks for the reply. Looks like I will have o use some newer
> distro.
As it was already said... btrfs may even corrupt your filesystem if
colliding UUIDs are "seen".
At least to me it's currently unclear what "seen" exactly means...
actually trying a mount, or already when just a device with colliding
IDs appear.
So whenever you do your recovery works, make sure that there's never a
moment where more than one btrfs block device appears with the same
UUID.
Even when it's just for some seconds it may already cause corruption.
Cheers,
Chris.
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next prev parent reply other threads:[~2015-12-27 23:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-27 14:31 How to change BTRFS filesystem UUID Jiri Kanicky
2015-12-27 14:45 ` Hugo Mills
2015-12-27 15:27 ` Jiri Kanicky
2015-12-27 23:01 ` Christoph Anton Mitterer [this message]
2015-12-27 23:13 ` Hugo Mills
2015-12-28 1:00 ` Duncan
2015-12-28 2:13 ` Jiri Kanicky
2015-12-28 4:35 ` Duncan
2015-12-27 14:48 ` Holger Hoffstätte
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