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 2B514C433EF for ; Sun, 29 May 2022 18:05:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231336AbiE2SF0 (ORCPT ); Sun, 29 May 2022 14:05:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50682 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231637AbiE2SFP (ORCPT ); Sun, 29 May 2022 14:05:15 -0400 Received: from mail1.merlins.org (magic.merlins.org [209.81.13.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A9B4A64BF2 for ; Sun, 29 May 2022 11:05:13 -0700 (PDT) Received: from [76.132.34.178] (port=59056 helo=sauron.svh.merlins.org) by mail1.merlins.org with esmtpsa (Cipher TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.94.2 #2) id 1nvMZU-0001iq-5N by authid with srv_auth_plain; Sun, 29 May 2022 11:05:11 -0700 Received: from merlin by sauron.svh.merlins.org with local (Exim 4.92) (envelope-from ) id 1nvNHq-004ZA7-QA; Sun, 29 May 2022 11:05:10 -0700 Date: Sun, 29 May 2022 11:05:10 -0700 From: Marc MERLIN To: Josef Bacik Cc: linux-btrfs Subject: Re: Rebuilding 24TB Raid5 array (was btrfs corruption: parent transid verify failed + open_ctree failed) Message-ID: <20220529180510.GG24951@merlins.org> References: <20220527232604.GA22722@merlins.org> <20220528225601.GD24951@merlins.org> <20220529035139.GE24951@merlins.org> <20220529153312.GF24951@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/ X-Broken-Reverse-DNS: no host name for IP address 76.132.34.178 X-SA-Exim-Connect-IP: 76.132.34.178 X-SA-Exim-Mail-From: marc@merlins.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Sun, May 29, 2022 at 01:32:48PM -0400, Josef Bacik wrote: > On Sun, May 29, 2022 at 11:33 AM Marc MERLIN wrote: > > > > On Sun, May 29, 2022 at 11:00:35AM -0400, Josef Bacik wrote: > > > > gargamel:/var/local/src/btrfs-progs-josefbacik# ./btrfs rescue tree-recover /dev/mapper/dshelf1 > > > > ERROR: cannot read chunk root > > > > WTF??? > > > > ERROR: open ctree failed > > > > Tree recover failed > > > > > > Sorry, thought I fixed this before pushing yesterday, try again please. Thanks, > > > > Resynced but it's the same: > > > > gargamel:/var/local/src/btrfs-progs-josefbacik# ./btrfs rescue tree-recover /dev/mapper/dshelf1 > > WARNING: cannot read chunk root, continue anyway > > ERROR: Failed to read root block > > Tree recover failed > > Oh huh, apparently I only scan for a root if we didn't find a good fit > in the beginning, not if I couldn't read any roots. Fixed that up, > please try again. Thanks, gargamel:/var/local/src/btrfs-progs-josefbacik# ./btrfs rescue tree-recover /dev/mapper/dshelf1 WARNING: cannot read chunk root, continue anyway none of our backups was sufficient, scanning for a root ERROR: Couldn't find a valid root block for 3, we're going to clear it and hope for the best Tree recover failed -- "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/ | PGP 7F55D5F27AAF9D08