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=-5.5 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 5B429C433E0 for ; Tue, 4 Aug 2020 15:41:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 43A3221744 for ; Tue, 4 Aug 2020 15:41:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=liland-com.20150623.gappssmtp.com header.i=@liland-com.20150623.gappssmtp.com header.b="gvKjG42q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728371AbgHDPlA (ORCPT ); Tue, 4 Aug 2020 11:41:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40158 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728295AbgHDPk5 (ORCPT ); Tue, 4 Aug 2020 11:40:57 -0400 Received: from mail-ej1-x629.google.com (mail-ej1-x629.google.com [IPv6:2a00:1450:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07D6AC06174A for ; Tue, 4 Aug 2020 08:40:57 -0700 (PDT) Received: by mail-ej1-x629.google.com with SMTP id a26so17151623ejc.2 for ; Tue, 04 Aug 2020 08:40:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=liland-com.20150623.gappssmtp.com; s=20150623; h=to:from:subject:message-id:date:user-agent:mime-version :content-transfer-encoding:content-language; bh=WzZBomgXnLT2k2JLbw0uuVNqwfAPvzfKZ/CESV282NI=; b=gvKjG42qiUQaVVxM7nfWbqgTWJyK/WVKFuF1BpxavB5ENHQtoOKaKze0Zs62Q1nlN6 MW6T+LbgtYhOk2WCfvDurcCmL/MMrs4o+KlaB70fhCTHh4wecZu4N4vEv4/GyMn9VLcA W25XvNRU1wjG34hSja6DlFdiBNglMTOvZXGZ42FFu+tIxQSXY6LlujdkbM2+vPmpwX+p TauTFLlCXv4TQAyqEdVDPjnzgbMjb+Xjh3lZjTLDfHOvQ7od2qdnKDJoL9rvN6hegjj2 61i2/H7mZpMXvL33WnF6YZNnFfVp6sydIBwQDVw3+g25k1Hx+SLtG6bmj0mDja6cO8P4 vL9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-transfer-encoding:content-language; bh=WzZBomgXnLT2k2JLbw0uuVNqwfAPvzfKZ/CESV282NI=; b=LdBwvykJyiArmjrgP7yMHqUGuP2jjTkdWIrfMjqqG4DxEXFvqo2uwK6WAF0IeGd62N nWHdPQza8JollrbI1NeT3fqHx7R/Uq7CwhtlvEY+7zYWa0BNeiVSVt7IophP7qu00X8X fWKWbTrk0YZHaP7R1jYHBqq3Rj7+LdNE5V/pZ7BsUNrpOWLUzS0JCcX5BB0SdXKoLHid eMNxLptbAsJbe/gVcVRYbwJEkNznXObIyLmMVnkHqZJjEsVm2VqIyX9/9Qam9f+LC7A8 NZ2G85M/AWGy2kpwQpmdbFhocgupuk01jf1cYB2fc4UJk+YP8tKG8zaTJpCSU6qp2/K/ FjeA== X-Gm-Message-State: AOAM531daNPa8sV52ofUPFibd34lxFe1AyA5BkoGlDxPN2eVWqTbB/n+ MDrOyrHhqWKil5MkUV368fxstFFYYxf/gN42uiB1RIIQdNn56Kcfk+viUTuTo857zfEHyFdj2EG 0NnLGHFLdkNTzn4gYWLUHdzBxPoA= X-Google-Smtp-Source: ABdhPJzbcp3FITuPakHbGTlb/2I+Dv+pjXe52qy+UDv/rDnFdbmNwz/kPAMsaNqYK+705CCkPERqvA== X-Received: by 2002:a17:906:ca8c:: with SMTP id js12mr8811737ejb.195.1596555654351; Tue, 04 Aug 2020 08:40:54 -0700 (PDT) Received: from [192.168.0.142] ([62.218.42.35]) by smtp.gmail.com with ESMTPSA id q17sm18646061ejd.20.2020.08.04.08.40.52 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 04 Aug 2020 08:40:53 -0700 (PDT) To: linux-btrfs@vger.kernel.org From: Edmund Urbani Subject: Unable to remove missing device from RAID-6 due to csum error Message-ID: Date: Tue, 4 Aug 2020 17:40:01 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: quoted-printable Content-Language: en-US Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Hi all, so I have removed one of four disks from the filesystem, operated it in deg= raded=20 mode for a while, and then added the replacement to the array. However when= I=20 attempted to remove the missing device, after several hours the operation w= as=20 aborted with an IO error. dmesg showed a csum error. I ran scrub (took a fe= w=20 days), which eventually aborted as well. So now I am stuck with a filesyste= m in=20 degraded mode with a missing device: Label: none=C2=A0 uuid: 9c3c3f8d-a601-4bd3-8871-d068dd500a15 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Total devices 5 FS bytes used 1= 5.00TiB =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 devid=C2=A0=C2=A0=C2=A0 3 size = 9.09TiB used 8.81TiB path /dev/sda1 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 devid=C2=A0=C2=A0=C2=A0 4 size = 9.09TiB used 8.81TiB path /dev/sdb1 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 devid=C2=A0=C2=A0=C2=A0 5 size = 9.09TiB used 8.78TiB path /dev/sdd1 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 devid=C2=A0=C2=A0=C2=A0 6 size = 9.09TiB used 558.53GiB path /dev/sdc1 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 *** Some devices missing sdc1 is the new device as you can probably guess from the fact that it stil= l has=20 a lot more unused space Help? 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