From: "Amir G." Subject: [LSF TOPIC] [ATTEND] Next3 snapshots in Ext4 Date: Thu, 17 Jun 2010 10:32:39 +0300 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: linux-fsdevel@vger.kernel.org, Ext4 Developers List , Theodore Tso To: lsf10-pc@lists.linuxfoundation.org Return-path: Received: from mail-bw0-f46.google.com ([209.85.214.46]:64172 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755711Ab0FQHcm (ORCPT ); Thu, 17 Jun 2010 03:32:42 -0400 Sender: linux-ext4-owner@vger.kernel.org List-ID: Hi, I got comments from many people, including Ric, that would like to see Next3 snapshots merged into Ext4, so I would like to attend and discuss some of the issues related to the merge. Agenda from the top of my head: 1. Overview of the Next3 snapshots implementation in Ext3 2. How to deal with move-on-write of data blocks in extent mapped files? 3. How to guaranty snapshots data consistency on copy-on-write of non-journaled data blocks? 4. What are the implications of delayed allocation on consistency of snapshots? 5. how to deal with file fragmentation due to move-on-write? Thanks, Amir.