From: Andreas Dilger Subject: Re: [PATCH v2.1 00/50] e2fsprogs: Add metadata checksumming Date: Mon, 28 Nov 2011 22:17:35 -0700 Message-ID: <484E5140-D0E7-4BE2-BF59-F88406D95E8C@dilger.ca> References: <20111129002755.17953.19556.stgit@elm3c44.beaverton.ibm.com> Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8BIT Cc: Theodore Tso , Sunil Mushran , Amir Goldstein , Andi Kleen , Mingming Cao , Joel Becker , linux-ext4@vger.kernel.org, Coly Li To: "Darrick J. Wong" Return-path: Received: from idcmail-mo2no.shaw.ca ([64.59.134.9]:16785 "EHLO idcmail-mo2no.shaw.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751689Ab1K2FRg convert rfc822-to-8bit (ORCPT ); Tue, 29 Nov 2011 00:17:36 -0500 In-Reply-To: <20111129002755.17953.19556.stgit@elm3c44.beaverton.ibm.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: 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). Cheers, Andreas