From owner-freebsd-fs@FreeBSD.ORG Mon Dec 12 19:04:36 2011 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C07A81065673 for ; Mon, 12 Dec 2011 19:04:36 +0000 (UTC) (envelope-from siur.vvm@gmail.com) Received: from mail-vw0-f54.google.com (mail-vw0-f54.google.com [209.85.212.54]) by mx1.freebsd.org (Postfix) with ESMTP id 83BE88FC14 for ; Mon, 12 Dec 2011 19:04:36 +0000 (UTC) Received: by vbbfr13 with SMTP id fr13so6874363vbb.13 for ; Mon, 12 Dec 2011 11:04:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; bh=wqY3/4Ps6qLO9nFGlZPa5mAwcQKZkjHvT1v4T51FbbY=; b=FQHk4WkN39kPjp5nKwr+5JhaTTLXbjIGZXFrz8FwFOtOGcvU1MB7xUf8On1IxBXgQt MmVveqEPcIex3SZlBQKBx4Q5xKmi38clwLBKnC2BvIfXu+OXB/9h6ihI7cySXJBc6aew 6XqrbNjW1BQZ3RSE2M4ppQMLl4fuN6lm8t8ZQ= MIME-Version: 1.0 Received: by 10.52.88.51 with SMTP id bd19mr10559381vdb.118.1323715072324; Mon, 12 Dec 2011 10:37:52 -0800 (PST) Received: by 10.52.28.8 with HTTP; Mon, 12 Dec 2011 10:37:52 -0800 (PST) Date: Mon, 12 Dec 2011 22:37:52 +0400 Message-ID: From: siur To: freebsd-fs@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Subject: epic UFS crash X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 12 Dec 2011 19:04:36 -0000 Hello! Some days ago I had situation with server running under FreeBSD 7.3. Power supply unit suddenly broke down so server switched off incorrectly. After that hardware raid controller marked one disk in RAID1 as degrated. We've boot system from other disk and found out, that almost all data was gone. To be exactly, it's looks like everything created during last uptime had just dissappeared. I mean, literally, server looked like from the past -- there was no data newer than summer 2010. All databases, websites, user's files -- everything was created/modified a year ago. Fsck created much staff in lost+found directories, but, for example, directories looks like empty for 'ls -la', but hex dump shows information (that's, actually more like file, not a directory). So, could anybody help me find out how it possibly could happen? (my creepy story contains very few details, I understand). Does anybody saw something like that? I appreciate any ideas, all that shit just blowing my mind. P.S. Generally, is there possibility to recover data from filesystem with corrupted metadata?(My assumption was about corrupted meta, I hope, superblock and data itself is alive). P.P.S Sorry for my english 8(