linux-ext4 - Re: [PATCH 06/19] e2fsck: try to salvage extent blocks with bad checksums

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Date:	Sat, 2 Aug 2014 22:33:21 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	"Darrick J. Wong" <darrick.wong@...cle.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH 06/19] e2fsck: try to salvage extent blocks with bad
 checksums

On Fri, Aug 01, 2014 at 11:12:21AM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@...cle.com>
> 
> Remove the code that would zap an extent block immediately if the
> checksum failed (i.e. strict_csums).  Instead, we'll only do that if
> the extent block header shows obvious structural problems; if the
> header checks out, then we'll iterate the block and see if we can
> recover some extents.
> 
> Requires a minor modification to ext2fs_extent_get such that the
> extent block will be returned in the buffer even if the return code
> indicates a checksum error.  This brings its behavior in line with
> the rest of libext2fs.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>

Applied, thanks.

						- Ted
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