linux-ext4 - [PATCH v2.1 00/50] e2fsprogs: Add metadata checksumming

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Date:	Mon, 28 Nov 2011 16:27:56 -0800
From:	"Darrick J. Wong" <djwong@...ibm.com>
To:	Andreas Dilger <adilger.kernel@...ger.ca>,
	Theodore Tso <tytso@....edu>,
	"Darrick J. Wong" <djwong@...ibm.com>
Cc:	Sunil Mushran <sunil.mushran@...cle.com>,
	Amir Goldstein <amir73il@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Mingming Cao <cmm@...ibm.com>,
	Joel Becker <jlbec@...lplan.org>, linux-ext4@...r.kernel.org,
	Coly Li <colyli@...il.com>
Subject: [PATCH v2.1 00/50] e2fsprogs: Add metadata checksumming

Hi all,

This patchset adds support in e2fsprogs for attaching crc32c checksums to most
of the ext4 metadata objects.  A full design document is on the ext4 wiki[1].
Please see the cover letter for the kernel patches for a more thorough summary
of this work.

Please have a look at the design document and patches, and please feel free to
suggest any changes.

v2: Checksum the MMP block, store the checksum type in the superblock, include
the inode generation in file checksums, and finally solve the problem of limited
space in block groups by splitting the checksum into two halves.

v2.1: Checksum the reserved parts of the htree tail structure.

This patchset has been tested on 3.2.0-rc3 on x64, i386, ppc64, and ppc32.  The
patches seems to work fine on all four platforms.  The patchset is based atop
the 1.42 WIP-1120 release.

--D

[1] https://ext4.wiki.kernel.org/index.php/Ext4_Metadata_Checksums

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