From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Tue, 12 Feb 2008 03:17:34 -0800 (PST) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.168.29]) by oss.sgi.com (8.12.11.20060308/8.12.11/SuSE Linux 0.7) with ESMTP id m1CBGsme003056 for ; Tue, 12 Feb 2008 03:16:57 -0800 Received: from out4.smtp.messagingengine.com (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id A30FD5C71A9 for ; Tue, 12 Feb 2008 03:17:16 -0800 (PST) Received: from out4.smtp.messagingengine.com (out4.smtp.messagingengine.com [66.111.4.28]) by cuda.sgi.com with ESMTP id 3x3TQ2jeIhPkrKAo for ; Tue, 12 Feb 2008 03:17:16 -0800 (PST) Message-Id: <1202815035.5821.1236404891@webmail.messagingengine.com> From: "Felix E. Klee" Content-Disposition: inline Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="ISO-8859-1" MIME-Version: 1.0 References: <1202769551.16458.1236311973@webmail.messagingengine.com> <47B0E26D.7070807@sgi.com> Subject: Re: Restoring damaged incremental XFS dump? In-Reply-To: <47B0E26D.7070807@sgi.com> Date: Tue, 12 Feb 2008 12:17:15 +0100 Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: Timothy Shimmin Cc: xfs@oss.sgi.com On Tue, 12 Feb 2008 11:03:57 +1100, "Timothy Shimmin" said: > I'm not sure what you mean by "true snapshots". I wouldn't really > call it snapshots as in what you could get if you froze the > filesystem etc.. Oh, it does not freeze the filesystem - what a pity. I recall someone telling me that it does. Seems like that was bad information or my memory is failing on me. > > So, what happens when the level 0 dump created with xfsdump becomes > > damaged. Will I still be able to recover some files? What about > > files from >0 dumps? > > Yes you will still be able to restore stuff. However, it is in its own > format so only xfsrestore will be able to do your restoring. Dumps are > separated into what it calls media files which are meant to be self > containing. So damage to 1 theoretically shouldn't prevent restoring > from another media file. Multiple media files are normally only used > for tape (only 1 used for a dump to a file). And an incremental dump > should also be able to be restored in isolation and there are some QA > tests (in xfs-cmds/xfstests) that test this. Thanks! Felix -- Dipl.-Phys. Felix E. Klee Naunynstr. 2, 76530 Baden-Baden, Germany Tel.: +49 7221 396961, Fax: +49 7221 396960, Mobile: +49 174 1386060 http://www.linkedin.com/in/feklee