From: "Darrick J. Wong" <djwong@us.ibm.com>
To: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Theodore Tso <tytso@mit.edu>,
Sunil Mushran <sunil.mushran@oracle.com>,
Amir Goldstein <amir73il@gmail.com>,
Andi Kleen <andi@firstfloor.org>, Mingming Cao <cmm@us.ibm.com>,
Joel Becker <jlbec@evilplan.org>,
linux-ext4@vger.kernel.org, Coly Li <colyli@gmail.com>
Subject: Re: [PATCH v2.1 00/50] e2fsprogs: Add metadata checksumming
Date: Mon, 28 Nov 2011 23:52:28 -0800 [thread overview]
Message-ID: <20111129075228.GA23175@tux1.beaverton.ibm.com> (raw)
In-Reply-To: <484E5140-D0E7-4BE2-BF59-F88406D95E8C@dilger.ca>
On Mon, Nov 28, 2011 at 10:17:35PM -0700, Andreas Dilger wrote:
> On 2011-11-28, at 5:27 PM, Darrick J. Wong wrote:
> > 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.
> >
> > [1] https://ext4.wiki.kernel.org/index.php/Ext4_Metadata_Checksums
>
> This URL has changed:
>
> https://ext4.wiki.kernel.org/articles/e/x/t/Ext4_Metadata_Checksums_4d24.html
>
> It would also be useful to include in this wiki page the tests you
> did for the checksum speed of different algorithms at different chunk
> sizes, since checksums of 512MB of data are few and far between
> (especially since this is not computing the checksum of file data).
Oh, the wiki's back up... though I guess I can't log in either. I'll dig up
the results and shove it in the google docs spreadsheet for now, I guess.
--D
>
> Cheers, Andreas
>
>
>
>
>
prev parent reply other threads:[~2011-11-29 7:52 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-29 0:27 [PATCH v2.1 00/50] e2fsprogs: Add metadata checksumming Darrick J. Wong
2011-11-29 0:28 ` [PATCH 01/50] libext2fs: Read and write full size inodes Darrick J. Wong
2011-11-29 0:28 ` [PATCH 02/50] libext2fs: Add metadata checksum flag Darrick J. Wong
2011-11-29 0:28 ` [PATCH 03/50] debugfs: Optionally ignore bad checksums Darrick J. Wong
2011-11-29 0:28 ` [PATCH 04/50] libext2fs: Add inode checksum support Darrick J. Wong
2011-11-29 0:28 ` [PATCH 05/50] debugfs: Dump inode checksum when appropriate Darrick J. Wong
2011-11-29 0:28 ` [PATCH 06/50] tune2fs: Add inode checksum support Darrick J. Wong
2011-11-29 0:28 ` [PATCH 07/50] e2fsck: Verify and correct inode checksums Darrick J. Wong
2011-11-29 0:28 ` [PATCH 08/50] mke2fs: Allow metadata checksums to be turned on at mkfs time Darrick J. Wong
2011-11-29 0:28 ` [PATCH 09/50] libext2fs: Create the inode bitmap checksum Darrick J. Wong
2011-11-29 0:29 ` [PATCH 10/50] tune2fs: Rewrite inode bitmap checksums Darrick J. Wong
2011-11-29 0:29 ` [PATCH 11/50] dumpe2fs: Display inode bitmap checksum Darrick J. Wong
2011-11-29 0:29 ` [PATCH 12/50] e2fsck: Verify " Darrick J. Wong
2011-11-29 0:29 ` [PATCH 13/50] libext2fs: Create the block " Darrick J. Wong
2011-11-29 0:29 ` [PATCH 14/50] dumpe2fs: Display " Darrick J. Wong
2011-11-29 0:29 ` [PATCH 15/50] e2fsck: Verify " Darrick J. Wong
2011-11-29 0:29 ` [PATCH 16/50] e2fsck: Don't verify bitmap checksums Darrick J. Wong
2011-11-29 0:29 ` [PATCH 17/50] tune2fs: Rewrite block " Darrick J. Wong
2011-11-29 0:29 ` [PATCH 18/50] libext2fs: Verify and calculate extent tree block checksums Darrick J. Wong
2011-11-29 0:29 ` [PATCH 19/50] tune2fs: Enable extent tree checksums Darrick J. Wong
2011-11-29 0:30 ` [PATCH 20/50] e2fsck: Verify extent tree blocks and clear the bad ones Darrick J. Wong
2011-11-29 0:30 ` [PATCH 21/50] libext2fs: Introduce dx_tail and dir_entry_tail Darrick J. Wong
2011-11-29 0:30 ` [PATCH 22/50] debugfs: Print htree internal node checksums Darrick J. Wong
2011-11-29 0:30 ` [PATCH 23/50] libext2fs: Add dx_root/dx_node checksum calculation and verification helpers Darrick J. Wong
2011-11-29 0:30 ` [PATCH 24/50] e2fsck: Verify htree root/node checksums Darrick J. Wong
2011-11-29 0:30 ` [PATCH 25/50] libext2fs: Introduce dir_entry_tail to provide checksums for directory leaf nodes Darrick J. Wong
2011-11-29 0:30 ` [PATCH 26/50] e2fsck: Check directory leaf block checksums Darrick J. Wong
2011-11-29 0:30 ` [PATCH 27/50] tune2fs: Rebuild and checksum directories when toggling metadata_csum or changing UUID Darrick J. Wong
2011-11-29 0:31 ` [PATCH 28/50] libext2fs: Verify and calculate extended attribute block checksums Darrick J. Wong
2011-11-29 0:31 ` [PATCH 29/50] e2fsck: Check " Darrick J. Wong
2011-11-29 0:31 ` [PATCH 30/50] tune2fs: Rewrite " Darrick J. Wong
2011-11-29 0:31 ` [PATCH 31/50] libext2fs: Calculate and verify superblock checksums Darrick J. Wong
2011-11-29 0:31 ` [PATCH 32/50] e2fsck: Handle superblock checksum errors gracefully Darrick J. Wong
2011-11-29 0:31 ` [PATCH 33/50] libext2fs: Use i_generation in inode-related metadata checksums Darrick J. Wong
2011-11-29 0:31 ` [PATCH 34/50] libext2fs: Record the checksum algorithm in use in the superblock Darrick J. Wong
2011-11-29 0:31 ` [PATCH 35/50] tune2fs: Store checksum algorithm type in superblock Darrick J. Wong
2011-11-29 0:32 ` [PATCH 36/50] mke2fs: Record the checksum algorithm in use in the superblock Darrick J. Wong
2011-11-29 0:32 ` [PATCH 37/50] libext2fs: Block group checksum should use metadata_csum algorithm (if feature flag set) Darrick J. Wong
2011-11-29 0:32 ` [PATCH 38/50] tune2fs: Rewrite block group checksums when changing bg_use_meta_csum feature Darrick J. Wong
2011-11-29 0:32 ` [PATCH 39/50] mke2fs: Warn if not enabling all the features that metadata_csum wants Darrick J. Wong
2011-11-29 0:32 ` [PATCH 40/50] libext2fs: Add checksum to MMP block Darrick J. Wong
2011-11-29 0:32 ` [PATCH 41/50] e2fsck: Verify and correct MMP checksum problems Darrick J. Wong
2011-11-29 0:32 ` [PATCH 42/50] tune2fs: Force MMP update when changing metadata_csum flag Darrick J. Wong
2011-11-29 0:32 ` [PATCH 43/50] libext2fs: Add feature flags for jbd2 v2 checksums Darrick J. Wong
2011-11-29 0:32 ` [PATCH 44/50] e2fsck: Check journal superblock checksum prior to recovery Darrick J. Wong
2011-11-29 0:33 ` [PATCH 45/50] e2fsck: Check revoke block checksum during recovery Darrick J. Wong
2011-11-29 0:33 ` [PATCH 46/50] e2fsck: Check descriptor block checksum when recovering journal Darrick J. Wong
2011-11-29 0:33 ` [PATCH 47/50] e2fsck: Check commit block checksum during recovery Darrick J. Wong
2011-11-29 0:33 ` [PATCH 48/50] e2fsck: Verify data block checksums when recovering journal Darrick J. Wong
2011-11-29 0:33 ` [PATCH 49/50] libext2fs: Bring the CRC32c implementation up to date with the kernel implementation Darrick J. Wong
2011-11-29 0:33 ` [PATCH 50/50] e2fsck: Refactor crc32_be code Darrick J. Wong
2011-11-29 5:17 ` [PATCH v2.1 00/50] e2fsprogs: Add metadata checksumming Andreas Dilger
2011-11-29 7:52 ` Darrick J. Wong [this message]
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