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 X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B253C47247 for ; Thu, 30 Apr 2020 19:05:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 19C722073E for ; Thu, 30 Apr 2020 19:05:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=protonmail.com header.i=@protonmail.com header.b="mmhN5Z5x" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726394AbgD3TFN (ORCPT ); Thu, 30 Apr 2020 15:05:13 -0400 Received: from mail-40130.protonmail.ch ([185.70.40.130]:61043 "EHLO mail-40130.protonmail.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726285AbgD3TFN (ORCPT ); Thu, 30 Apr 2020 15:05:13 -0400 Date: Thu, 30 Apr 2020 19:05:06 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail; t=1588273510; bh=V5zqsqX+QdFtR36KFcFr6O6Gzq2jn4RNbIOoQ9nCLXY=; h=Date:To:From:Cc:Reply-To:Subject:In-Reply-To:References:From; b=mmhN5Z5xJ5vpfdO5/3eBofjeyUjnMcgAv4Spr9hXhr008UvOYVEOYVbfmesKQLrrK SMEEmQKEy+KEqFKlpPjR6AjaslbBYOxsMzzg4vSPd576RgMfC88MMi6OjdW0zjXHC9 7IAUDb6/lFok9mmlQKz1CKBetqCNfdPYYYHn9R2I= To: Chris Murphy From: Nouts Cc: "linux-btrfs@vger.kernel.org" Reply-To: Nouts Subject: Re: Troubleshoot help needed - RAID1 not mounting : failed to read block groups Message-ID: In-Reply-To: References: <5oMc__tPC-OFYhHTtUghYtHMzySzDXlSlYC_S5_WjIFiA8eXfvsSxQpfaglOag0sNz7qtvMUzhCqdRzBOMokxeo2dFrfkWrLbBmmuWvME5s=@protonmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Here is the dump --follow : https://pastebin.com/yx13mDfB Sadly, none of "mount" worked. I'm on debian 9, already using backported Kernel. For Kernel 5.4 or 5.6, I would have to use debian testing repo... I'll see what I can do without breaking the rest of my system :) =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90 Original Me= ssage =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90 On Thursday, April 30, 2020 8:46 PM, Chris Murphy = wrote: > On Thu, Apr 30, 2020 at 12:40 PM Nouts nouts@protonmail.com wrote: > > > Thanks for your help. I compiled btrfs-progs v5.6 from github. > > Here is the dump from /dev/sda : https://pastebin.com/e3YZxxsZ > > And btrfs check returned an error instantly : > > Opening filesystem to check... > > ERROR: child eb corrupted: parent bytenr=3D5923702292480 item=3D2 paren= t level=3D2 child level=3D0 > > ERROR: failed to read block groups: Input/output error > > ERROR: cannot open file system > > Ok try: > btrfs insp dump-t -b 5923702292480 --follow /dev/sda > > Qu might have an idea. But in the meantime, my suggestion is to try to > mount with a newer kernel. In order try: > > normal mount > mount -o ro > mount -o ro,degraded > mount -o ro,degraded,usebackuproot > > And if any works, at least you can update backups in case this file > system can't be fixed. > > > -------------------------------------------------------------------------= ---------------------------------------------------------------------------= ---------------------------------------------------------------------------= ---------------------------------------------------------------------------= ----------------------------------------------------- > > Chris Murphy