From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heinz-Josef Claes Subject: Re: duplicate files and recent changes Date: 07 Jun 2002 10:53:57 +0200 Message-ID: <1023440037.971.6.camel@kakapo> References: Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: list-help: list-unsubscribe: list-post: In-Reply-To: List-Id: Content-Type: text/plain; charset="us-ascii" To: "S. Alexander Jacobson" Cc: reiserfs-list@namesys.com Am Don, 2002-06-06 um 07.30 schrieb S. Alexander Jacobson: > I just joined this list. Two question: > > 1. Can reiserfs detect that I have two copies of > the same file on disk and store tham as one file > (doing a lazy copy) if someone writes to one of > them? > > 2. Is there a fast way to get access to the file > change list? It would be nice to be able to do > fast backup of changed files without having to > traverse entire directory trees. > > -Alex- > > ___________________________________________________________________ > S. Alexander Jacobson i2x Media > 1-212-787-1914 voice 1-603-288-1280 fax > > Hi, I don't know why you want this feature. But I've written a well tested tool for backing up directories on another disk which uses md5 sums to recognize same files (even in one backup) and hard links them. By this way, it combines the advantages of full and incremental backup. It also uses compression and has a lot of other options and optimisations. It runs best with reiserfs, because reiserfs has no preconfigured number of inodes and is fast with hard linking. So, if you need to backup, try http://sourceforge.net/projects/storebackup Regards, Heinz-Josef Claes PS: Licence is GPL.