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List:       linux-btrfs
Subject:    Re: BTRFS Duplicated UUID on /home
From:       "Kok, Auke-jan H" <auke-jan.h.kok () intel ! com>
Date:       2011-07-25 18:35:16
Message-ID: CABsxX9KBhy=WzGMxN0ay28jmwkNPZa0ox1yBWoMD8TgVxPQyow () mail ! gmail ! com
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On Mon, Jul 25, 2011 at 5:10 AM, Bryce Myers <bmyers@ceradyne.com> wrote:
> I have 4 partitions on my hard drive
> 1 = /boot on ext2
> 2 = Swap
> 3 = / on brtfs
> 4 = /home on btrfs
> 
> The uuid on partition 3 on my last boot was cloned to partition 4, so when I try to \
> mount either 3 or 4 they both mount the / partition. 
> We tried 7182011 git, and the current version in the ARCH 1062010, and neither had \
> an option for resetting the UUID that we could find.  Both partitions were \
> btrfsck'd and returned no errors.

Resetting the UUID on btrfs isn't a quick-and-easy thing - you have to
walk the entire tree and change every object. We've got a bad-hack in
meego that uses btrfs-debug-tree and changes the UUID while it runs
the entire tree, but it's ugly as hell.

You shouldn't clone btrfs really, just make a new filesystem.

Auke
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