From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id p0U0re4O240570 for ; Sat, 29 Jan 2011 18:53:40 -0600 Received: from greer.hardwarefreak.com (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id F06021EA5F79 for ; Sat, 29 Jan 2011 16:56:06 -0800 (PST) Received: from greer.hardwarefreak.com (mo-65-41-216-221.sta.embarqhsd.net [65.41.216.221]) by cuda.sgi.com with ESMTP id uAFF79oKHdcDBad1 for ; Sat, 29 Jan 2011 16:56:06 -0800 (PST) Received: from [192.168.100.53] (gffx.hardwarefreak.com [192.168.100.53]) by greer.hardwarefreak.com (Postfix) with ESMTP id 498CA6C0C3 for ; Sat, 29 Jan 2011 18:56:06 -0600 (CST) Message-ID: <4D44B726.8090409@hardwarefreak.com> Date: Sat, 29 Jan 2011 18:56:06 -0600 From: Stan Hoeppner MIME-Version: 1.0 Subject: Re: how to decode metadump info produced by xfs_db, and superblock error References: In-Reply-To: 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 Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com lord worm put forth on 1/29/2011 6:25 PM: > > What kind of information is in this file produced by metadump, is it worth reading it somehow? > > I'm trying to first understand what's causing a 'superblock cannot be read' error in my XFS after a succesfully dd of the partition (dd succeeds in copying to a file, and also restoring, but after restoring it cannot mount). > > xfs_repair fails to fix it, how should I attach the 55M metadata file to this email (do we have an upload location for this?), max size on hotmail is 25M ... > > Does the superblock error refer to primary or secondary superblocks? Does xfs_repair attempt to clone the broken superblock from the others? dd is not a proper XFS filesystem backup/restore utility. Instead use xfsdump and xfsrestore, or any file level backup/restore solution. You obviously now know why you shouldn't use dd for this purpose with XFS. ;) -- Stan _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs