From: "Darrick J. Wong" Subject: [PATCH v2 00/47] e2fsprogs: Add metadata checksumming Date: Sat, 08 Oct 2011 00:33:15 -0700 Message-ID: <20111008073315.17888.22132.stgit@elm3c44.beaverton.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: Sunil Mushran , Amir Goldstein , Andi Kleen , Mingming Cao , Joel Becker , linux-ext4@vger.kernel.org, Coly Li To: Andreas Dilger , Theodore Tso , "Darrick J. Wong" Return-path: Received: from e3.ny.us.ibm.com ([32.97.182.143]:40578 "EHLO e3.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751052Ab1JHHgD (ORCPT ); Sat, 8 Oct 2011 03:36:03 -0400 Received: from /spool/local by us.ibm.com with XMail ESMTP for from ; Sat, 8 Oct 2011 03:36:03 -0400 Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by d01relay03.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p987XKG2211138 for ; Sat, 8 Oct 2011 03:33:20 -0400 Received: from d01av01.pok.ibm.com (loopback [127.0.0.1]) by d01av01.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p987XHOG003971 for ; Sat, 8 Oct 2011 03:33:20 -0400 Sender: linux-ext4-owner@vger.kernel.org List-ID: 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. This patchset has been tested on 3.1.0-rc9 on x64, i386, ppc64, and ppc32. The patches seems to work fine on all four platforms. --D [1] https://ext4.wiki.kernel.org/index.php/Ext4_Metadata_Checksums