linux-ext4 - Re: [PATCH] ext4: Fixed corruption when online resizing a fs with 1K block size

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Message-ID: <20130617130703.GD24972@thunk.org>
Date:	Mon, 17 Jun 2013 09:07:03 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Jan Kara <jack@...e.cz>
Cc:	Maarten ter Huurne <maarten@...ewalker.org>,
	Andreas Dilger <adilger.kernel@...ger.ca>,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ext4: Fixed corruption when online resizing a fs with 1K
 block size

On Wed, May 08, 2013 at 03:58:25PM +0200, Jan Kara wrote:
> On Mon 06-05-13 18:06:07, Maarten ter Huurne wrote:
> > Subtracting the number of the first data block places the superblock
> > backups one block too early, corrupting the file system. When the block
> > size is larger than 1K, the first data block is 0, so the subtraction
> > has no effect and no corruption occurs.
>   Looking where mke2fs places backup super blocks you are right. You can
> add:
> Reviewed-by: Jan Kara <jack@...e.cz>

Applied, thanks.

					- Ted
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