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=-0.8 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 108FEC5DF62 for ; Wed, 6 Nov 2019 10:48:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CCA642173E for ; Wed, 6 Nov 2019 10:48:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="LZk2RuZ5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731186AbfKFKsk (ORCPT ); Wed, 6 Nov 2019 05:48:40 -0500 Received: from mail-pf1-f175.google.com ([209.85.210.175]:44541 "EHLO mail-pf1-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725890AbfKFKsk (ORCPT ); Wed, 6 Nov 2019 05:48:40 -0500 Received: by mail-pf1-f175.google.com with SMTP id q26so18542567pfn.11 for ; Wed, 06 Nov 2019 02:48:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=DAczmuw5VQKALP7e0EFoROD98O1F6HdG4Aip6W8htzI=; b=LZk2RuZ5aIDYUlQ116uOyJ7RE9MHpXSjpsAZXBZ4xqtZ//xw8Orr1pVbFHNuWknftF mVZ73NLSLwqr0yHSg+LLdTi4BlwH3YUEx2xBrPPlpmKDlf0Ki696bGPlIqegYqu8NE0L iBxJE0vno4+ge+44l08oybGfvu6HsPPJD8+EX3o8yB888yyuTm+gShRzeWvEJKVufTZr z0W2gIMFIeoEhxy+6g7Fuufm8xQd35x8h3PMXnbx5jZ/4vIjORKqTyKp4lXftVuPK467 J9cz3uqNiHV3pjdXFPUgyEFHogUN1XNP3UP7C6+9wtlha7vfa8b80VnJP4btdbIcGkiH yW5A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=DAczmuw5VQKALP7e0EFoROD98O1F6HdG4Aip6W8htzI=; b=SCg1j77kk1nGt4EivRB45Yz+p3XX0JiSolU14mzAxlnwNH9fzTq9PuU+MWJBCAVLWu 70zpMmiAzzZrw4pEV4Ar6MbsxjnORvcyf9TVUVld0mEq9xRN+wjSQiE135dRg6VkeqB2 ZjdHMLAYgtUKfeMAesVL45R7up9tSWj8lBox1PJV1oddM2URy3JPcO0n452G1Yg110VM v8B0Bdm+0YyQWcRzVkloU0/yaF0zq+yRhr68wGrqkRVfmqhDtQzTxR8NRaHv2g0i6+T/ NCPoHGNmniTTUZYjxyVZhvoEbk93jvr0i9yvtNF61KCmAxVJEd4iNfnx4IwU8wjp1s3f oliw== X-Gm-Message-State: APjAAAX29fIbRxo9elD2nblnjQeOLiPMNTSuBdHQLEXjVGxmEU0M3BTL GDY5tfGddo4i1gSkN1zykn4e91RlxaqbaKdlEqYmv7nhyXgqkA== X-Google-Smtp-Source: APXvYqw8Qa+5UR+LA6khUhEuh6tR/lfrB4Rkz8S5F/cDie+nhWG08H/CwDxQnzgPbLBbjZwjRtC3VcUDtA37xwoCCqE= X-Received: by 2002:a17:90a:25ea:: with SMTP id k97mr2820579pje.110.1573037319169; Wed, 06 Nov 2019 02:48:39 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Sergiu Cozma Date: Wed, 6 Nov 2019 12:48:02 +0200 Message-ID: Subject: Re: fix for ERROR: cannot read chunk root To: linux-btrfs@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org also btrfs check --readonly /dev/sdb4 Opening filesystem to check... checksum verify failed on 856119312384 found 000000B6 wanted 00000000 checksum verify failed on 856119312384 found 000000B6 wanted 00000000 bad tree block 856119312384, bytenr mismatch, want=856119312384, have=0 ERROR: cannot read chunk root ERROR: cannot open file system On Tue, Nov 5, 2019 at 5:04 PM Sergiu Cozma wrote: > > hi, i need some help to recover a btrfs partition > i use btrfs-progs v5.3.1 > > btrfs rescue super-recover https://pastebin.com/mGEp6vjV > btrfs inspect-internal dump-super -a https://pastebin.com/S4WrPQm1 > btrfs inspect-internal dump-tree https://pastebin.com/yX1zUDxa > > can't mount the partition with > BTRFS error (device sdb4): bad tree block start, want 856119312384 have 0 > [ 2295.237145] BTRFS error (device sdb4): failed to read chunk root > [ 2295.301067] BTRFS error (device sdb4): open_ctree failed