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To: David Sterba <dsterba@suse.cz>,
        "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
From: Chris Mason <chris.mason@fusionio.com>
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CC: David Sterba <dsterba@suse.cz>
References: <1367874680-9502-1-git-send-email-dsterba@suse.cz>
Message-ID: <20130510150808.12615.77419@localhost.localdomain>
Subject: Re: [PATCH] btrfs-progs: image: handle superblocks correctly on fs with big
 blocks
Date: Fri, 10 May 2013 11:08:08 -0400
Sender: linux-btrfs-owner@vger.kernel.org
List-ID: <linux-btrfs.vger.kernel.org>

Quoting David Sterba (2013-05-06 17:11:20)
> Superblock is always 4k, but metadata blocks may be larger. We have to
> use the appropriate block size when doing checksums, otherwise they're
> wrong.

The size coming in from the md should be correct.  See this commit from
my integration branch

https://git.kernel.org/cgit/linux/kernel/git/mason/btrfs-progs.git/commit/?h=integration&id=9c821327408803229e93a788e032e8e9caf11686

-chris