linux-ext4 - Re: Regular ext4 error warning with HD in USB dock

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Message-ID: <AANLkTinyc+H7t5yF8w81XXts0jfbdt4ROWM8MHEUjNeD@mail.gmail.com>
Date:	Fri, 7 Jan 2011 21:41:24 +0200
From:	Amir Goldstein <amir73il@...il.com>
To:	"Ted Ts'o" <tytso@....edu>
Cc:	Ric Wheeler <rwheeler@...hat.com>,
	Rogier Wolff <R.E.Wolff@...wizard.nl>,
	Con Kolivas <kernel@...ivas.org>, adilger.kernel@...ger.ca,
	linux-ext4@...r.kernel.org
Subject: Re: Regular ext4 error warning with HD in USB dock

On Fri, Jan 7, 2011 at 7:26 AM, Ted Ts'o <tytso@....edu> wrote:
> Am I missing something?  The kernel stores up to 3k worth of data, on
> a 4k block file system.  Whereas e2fsck patch blindly assume 2k worhth
> of data regardless of the block size.  The kernel patch looks ok, but
> the e2fsprogs patch seems badly broken....
>
>                                                - Ted
>

I thought that ext4 super block on 4K block is 1K at offset 1K, so
kernel only uses the remaining 2K.

It may very well be that e2fsck patch only works with 4K block size properly,
because I never tested it on other block sizes.

Amir.
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