From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-btrfs-owner@kernel.org>
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 38C31C433EF
	for <linux-btrfs@archiver.kernel.org>; Mon, 16 May 2022 15:17:00 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S237096AbiEPPQ7 (ORCPT <rfc822;linux-btrfs@archiver.kernel.org>);
        Mon, 16 May 2022 11:16:59 -0400
Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50248 "EHLO
        lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S237458AbiEPPQz (ORCPT
        <rfc822;linux-btrfs@vger.kernel.org>);
        Mon, 16 May 2022 11:16:55 -0400
Received: from mail1.merlins.org (magic.merlins.org [209.81.13.136])
        by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB6F5E2B
        for <linux-btrfs@vger.kernel.org>; Mon, 16 May 2022 08:16:54 -0700 (PDT)
Received: from c-24-5-124-255.hsd1.ca.comcast.net ([24.5.124.255]:50642 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 1nqcSr-0003te-P2 by authid <merlins.org> with srv_auth_plain; Mon, 16 May 2022 08:16:53 -0700
Received: from merlin by sauron.svh.merlins.org with local (Exim 4.92)
        (envelope-from <marc@merlins.org>)
        id 1nqcSr-003cDv-IO; Mon, 16 May 2022 08:16:53 -0700
Date:   Mon, 16 May 2022 08:16:53 -0700
From:   Marc MERLIN <marc@merlins.org>
To:     Josef Bacik <josef@toxicpanda.com>
Cc:     linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: Rebuilding 24TB Raid5 array (was btrfs corruption: parent
 transid verify failed + open_ctree failed)
Message-ID: <20220516151653.GF13006@merlins.org>
References: <CAEzrpqcVRJFS6HN4L7=tu0Z8SA+E2GsLJzWEADRK3iJvdVy4EA@mail.gmail.com>
 <20220515153347.GA8056@merlins.org>
 <CAEzrpqcZQVWwt1JSDg6z44dBYKW6fmmXmOTFoXiDWpoGXxufwQ@mail.gmail.com>
 <20220515154122.GB8056@merlins.org>
 <CAEzrpqc6MyW0t1H9ue_GQL-1AhgpWfumBfj3MK0eGstwJ3R1aw@mail.gmail.com>
 <20220515212951.GC13006@merlins.org>
 <20220515230147.GD13006@merlins.org>
 <CAEzrpqdbjeTYEy16KbzJ39bBkd8rkNTHA2n53UXHG-CdeUo6xw@mail.gmail.com>
 <20220516005759.GE13006@merlins.org>
 <CAEzrpqfMbB-sGLZUjGHjxHt1Gga+uULGkoZTqjXHwKnzsjP5aA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAEzrpqfMbB-sGLZUjGHjxHt1Gga+uULGkoZTqjXHwKnzsjP5aA@mail.gmail.com>
X-Sysadmin: BOFH
X-URL:  http://marc.merlins.org/
X-SA-Exim-Connect-IP: 24.5.124.255
X-SA-Exim-Mail-From: marc@merlins.org
Precedence: bulk
List-ID: <linux-btrfs.vger.kernel.org>
X-Mailing-List: linux-btrfs@vger.kernel.org

On Mon, May 16, 2022 at 10:50:42AM -0400, Josef Bacik wrote:
> > > btrfs-corrupt-block -d "1,204,941709328384" -r 3 <device>
> > >
> > > and then you should be good, unless there are other dangling dev
> > > extents that need to be removed.  Thanks,
> >
> > Is that bad?
> 
> Yeah, means I don't understand my own filesystem, use -r 4 instead
> please.  Thanks,

gargamel:/var/local/src/btrfs-progs-josefbacik# ./btrfs-corrupt-block -d "1,204,941709328384" -r4 /dev/mapper/dshelf1 
FS_INFO IS 0x55e58be9e600
JOSEF: root 9
Couldn't find the last root for 8
FS_INFO AFTER IS 0x55e58be9e600

gargamel:/var/local/src/btrfs-progs-josefbacik# ./btrfs-corrupt-block -d "1,204,941709328384" -r 4 /dev/mapper/dshelf1 
FS_INFO IS 0x55e239055600
JOSEF: root 9
Couldn't find the last root for 8
FS_INFO AFTER IS 0x55e239055600
Error searching to node -2

Means it worked?
-- 
"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