From: "J.D. Bakker" Subject: Re: Recovering a damaged ext4 fs - revisited. Date: Fri, 6 Feb 2009 23:34:36 +0100 Message-ID: References: <498CB68C.5030409@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" ; format="flowed" Cc: linux-ext4@vger.kernel.org To: Ric Wheeler Return-path: Received: from www.lartmaker.nl ([69.93.127.100]:40776 "EHLO www.lartmaker.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753236AbZBFWek (ORCPT ); Fri, 6 Feb 2009 17:34:40 -0500 In-Reply-To: <498CB68C.5030409@redhat.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: At 17:15 -0500 06-02-2009, Ric Wheeler wrote: >J.D. Bakker wrote: >>Hi, >> >>My 4TB ext4 RAID-6 has just become damaged for the second time in >>two months. While I do have backups for most of my data, it would >>be good to know if there is a recovery procedure or a way to avoid >>these crashes. The symptoms are massive group descriptor >>corruption, similar to what was mentioned in >>http://thread.gmane.org/gmane.comp.file-systems.ext4/10844 and >>http://article.gmane.org/gmane.comp.file-systems.ext4/11195 . >What kind of RAID 6 device are you using? Is it MD raid or some vendor array? md, as shown in the linked config and dmesg. >>http://lartmaker.nl/ext4/kernel-config.txt >>http://lartmaker.nl/ext4/dmesg.txt >>http://lartmaker.nl/ext4/lspci.txt >>http://lartmaker.nl/ext4/proc-mdstat.txt >>http://lartmaker.nl/ext4/proc-partitions.txt JDB. -- LART. 250 MIPS under one Watt. Free hardware design files. http://www.lartmaker.nl/