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Date: Sat, 27 Sep 2014 09:48:20 +0400
From: Andrei Borzenkov <arvidjaar@gmail.com>
To: grub-devel@gnu.org
Subject: btrfs on Big Endian systems - anyone?
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I am not able to access btrfs on PowerPC. I did not test all of them,
but other filesystems I tried are OK. Looking at platforms, PPC seems
to be the only BE platform widely used for Linux; there are SPARC and
MIPS but I doubt they use btrfs often.

It sounds like missing endian conversion somewhere; any idea how it can
be found without learning btrfs by heart? :)