linux-ext4 - Re: [PATCH 01/12] libext2fs: fix maximum bg overhead calculation with meta

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Message-ID: <20151024043739.GI7917@thunk.org>
Date:	Sat, 24 Oct 2015 00:37:39 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	"Darrick J. Wong" <darrick.wong@...cle.com>
Cc:	linux-ext4@...r.kernel.org, Dave Chinner <david@...morbit.com>
Subject: Re: [PATCH 01/12] libext2fs: fix maximum bg overhead calculation
 with meta_bg enabled

On Mon, Oct 12, 2015 at 02:56:35PM -0700, Darrick J. Wong wrote:
> When meta_bg is enabled at mkfs time, we put at most one group
> descriptor block in each blockgroup.  Unfortunately, the calculation
> of max overhead per bg doesn't know this, so mkfs fails when it isn't
> strictly necessary.  Fix it, since Dave reported that he couldn't
> create a 500TB ext4 filesystem.
> 
> Reported-by: Dave Chinner <david@...morbit.com>
> Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>

Applied, thanks.

					- Ted
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