From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EE996C433FE for ; Tue, 5 Apr 2022 02:55:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230241AbiDEC5c (ORCPT ); Mon, 4 Apr 2022 22:57:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230480AbiDEC5U (ORCPT ); Mon, 4 Apr 2022 22:57:20 -0400 Received: from mail1.merlins.org (magic.merlins.org [209.81.13.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2621022F3C2 for ; Mon, 4 Apr 2022 19:07:30 -0700 (PDT) Received: from merlin by mail1.merlins.org with local (Exim 4.94.2 #2) id 1nbYbR-0000lj-DX by authid ; Mon, 04 Apr 2022 19:07:29 -0700 Date: Mon, 4 Apr 2022 19:07:29 -0700 From: Marc MERLIN To: Josef Bacik Cc: "linux-btrfs@vger.kernel.org" Subject: Re: Rebuilding 24TB Raid5 array (was btrfs corruption: parent transid verify failed + open_ctree failed) Message-ID: <20220405020729.GH5566@merlins.org> References: <20220405001808.GC5566@merlins.org> <20220405002826.GD5566@merlins.org> <20220405005809.GE5566@merlins.org> <20220405011559.GF5566@merlins.org> <20220405014259.GG5566@merlins.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Sysadmin: BOFH X-URL: http://marc.merlins.org/ User-Agent: Mutt/1.10.1 (2018-07-13) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: marc@merlins.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Mon, Apr 04, 2022 at 09:55:41PM -0400, Josef Bacik wrote: > On Mon, Apr 4, 2022 at 9:43 PM Marc MERLIN wrote: > > > > On Mon, Apr 04, 2022 at 09:22:26PM -0400, Josef Bacik wrote: > > > Ok lets try again with -b 13577821667328, and if the owner doesn't say > > > ROOT_TREE try 13577775284224 and then 13577814573056. Thanks, > > > > EXTENT_TREE, FS_TREE, and FS_TREE > > > > And shit, I got distracted and sent the text output to > > /dev/mapper/dshelf1a, so I clobbered about 30K of the device. > > I'm assuming there was probably something there? > > Yes the chunk tree, but your FS is DUP so we'll find the other copy, > it'll be fine. Great news, thanks. > Do you have any subvolumes that aren't snapshots? I think I can > re-create everything without knowing what other roots there are, but > if you have snapshots/subvolumes I need to be more careful. 6 subvolumes plus snwpshots of them: media other Soft Sound Video Win Maybe 50 to 100 snapshots total (mostly snapshots) > In any case I'm going to go to bed, it's been a long week. I'll start > working on a tool to re-create your root tree in the morning, and then > hopefully we can go from there. Thanks, Thanks for your help, have a good night. Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Home page: http://marc.merlins.org/