From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay3.corp.sgi.com [198.149.34.15]) by oss.sgi.com (Postfix) with ESMTP id 7C89429DF7 for ; Mon, 22 Dec 2014 14:43:35 -0600 (CST) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay3.corp.sgi.com (Postfix) with ESMTP id 0A7CCAC006 for ; Mon, 22 Dec 2014 12:43:34 -0800 (PST) Received: from ipmail05.adl6.internode.on.net (ipmail05.adl6.internode.on.net [150.101.137.143]) by cuda.sgi.com with ESMTP id HoCvedOhmjS124iT for ; Mon, 22 Dec 2014 12:43:28 -0800 (PST) Date: Tue, 23 Dec 2014 07:43:25 +1100 From: Dave Chinner Subject: Re: xfsdump questions Message-ID: <20141222204325.GJ24183@dastard> References: <20141219095738.6b6e6c88@localhost> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20141219095738.6b6e6c88@localhost> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: Stevie Trujillo Cc: xfs@oss.sgi.com On Fri, Dec 19, 2014 at 09:57:38AM +0100, Stevie Trujillo wrote: > Hello! > > Is xfsdump an ancient relic or something recommended to new users (I > have never seen anyone recommending it)? I gave it a try and found the > incremental backups to be really fast! Still supported, still works, still used in production by lots of people. > How are incremental backups implemented? I saw that my inventory file > is really small. Does it use some internal xfs metadata to detect > changes? Is it resilient against all kinda renames and changing > timestamps etc that a user might do? (I've previously used a backup > system that broke when doing stuff like that) It should detect renames and changing timestamps, etc. without any problems. > Is it possible to backup (and restore) ctimes? No. > I read that the incremental backups are limited to a depth of 10. Are > they intended to be used in a binary tree like fashion? In theory. Not sure anyone actually uses incremental dumps like that though, so you'd need to do a bunch of testing before deploying such a solution. Cheers, Dave. -- Dave Chinner david@fromorbit.com _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs