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 F2B06C4332F for ; Thu, 3 Nov 2022 04:25:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229804AbiKCEZy (ORCPT ); Thu, 3 Nov 2022 00:25:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54860 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229436AbiKCEZx (ORCPT ); Thu, 3 Nov 2022 00:25:53 -0400 Received: from mail-pl1-x62d.google.com (mail-pl1-x62d.google.com [IPv6:2607:f8b0:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8966C1145A for ; Wed, 2 Nov 2022 21:25:52 -0700 (PDT) Received: by mail-pl1-x62d.google.com with SMTP id c2so788124plz.11 for ; Wed, 02 Nov 2022 21:25:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:message-id:date:references:in-reply-to:subject:cc:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=M2uLKlWyEoLkzU9HLh77uRpqA3LANs5kgoNna0usxuY=; b=QiR2bROQmMTcNVNrqYA6nz0jcDnZUZ6Wsonu2lWUrNhH+Wz0hEUyQUmXuxt28eZcTZ GmKY1CmsO8G2Nz2f34B29UenTTGlDstR3rUsSdHzihPS+oTY95kv/UZ0Go+OKYw+4sPm ikPDkDiODyT0s2vcDUcA40/5496CAwp3k/iKCK518gsAAWRByDmTSfFAq/ko/Kc3QufD wnsLsyeKThLiZbsQQxs72KDn5/MVG8s2DfL5mK5g+tBdUC+7siKGkAu7xamoOv9r82ZF /XGhe2x+tJV2dzd3DBNwl7ajHhCuKZ/4SPEm5l19zqLQAfeiXWkngfnqF6N5bqLm+0AR vCiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=mime-version:message-id:date:references:in-reply-to:subject:cc:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=M2uLKlWyEoLkzU9HLh77uRpqA3LANs5kgoNna0usxuY=; b=a+wN++Usk5okrTpdQBwyzv7nXGra0LmCDWdIq51R9S7ixZ83tLSkC5GpRsoBld83jL dOUd543L0H1DjiMozY+tjehyg9lSjoHVCHL5WTGSXpUTZVRSoLTvYHqUIilIwkquRGPL NRL4+xSZLrDNUg6Vjb0H2IKxYgtEwFrdcqsprOez6Eg0q+/4DCE9xkzjpslSVCXIA4P7 +M7gXG/s0hy2XRRRpBn660ez6fzPkCSJOjZnm3JCQnmQxAIoSjk1WEI/e040koD7ah4r yh9ypUc/wPOv/2tL24dYoWXwiUD8tbjECNIcdeFZSH2ub7v8je/ycV4bJwTzTkZsBb8p 67og== X-Gm-Message-State: ACrzQf0eSAEOnyy2a+djdz2FzfbLwAcqKHKo+0/1jpvMg4IhW+Of1nAF nc46G9oCN48cDtIXgU3nJfVhxOgwxp4= X-Google-Smtp-Source: AMsMyM4plJxtlrVOAOaUPBs23gwKOCAK1m6OJWqPIS2T7J7NDfwUEVS99/aAi/PUsVj0yFFSIrTo9A== X-Received: by 2002:a17:90b:4f86:b0:213:3918:f29e with SMTP id qe6-20020a17090b4f8600b002133918f29emr28650547pjb.178.1667449551482; Wed, 02 Nov 2022 21:25:51 -0700 (PDT) Received: from ryzen3950 (c-208-82-98-189.rev.sailinternet.net. [208.82.98.189]) by smtp.gmail.com with ESMTPSA id t1-20020a17090340c100b0018855a22ccfsm238883pld.91.2022.11.02.21.25.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Nov 2022 21:25:50 -0700 (PDT) From: Matt Huszagh To: Andrei Borzenkov , Roman Mamedov Cc: linux-btrfs@vger.kernel.org Subject: Re: How to replace a failing device In-Reply-To: <0c66a75a-2cf6-2944-4423-7183804c7ad2@gmail.com> References: <87v8nyh4jg.fsf@gmail.com> <20221102003232.097748e7@nvm> <87v8nw3dcg.fsf@gmail.com> <0c66a75a-2cf6-2944-4423-7183804c7ad2@gmail.com> Date: Wed, 02 Nov 2022 21:25:49 -0700 Message-ID: <875yfwekaa.fsf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Andrei Borzenkov writes: > You have RAID0. Scrub cannot help in non-redundant configuration. Scrub > can repair bad copy of data using good copy of data, but in RAID0 there > is only one copy. I believe I addressed this in my original post when I said "I was hoping to use this to confirm that the affected files are confined to old snapshots" though I probably could have been more explicit. I didn't expect scrub to repair anything, just point me to the affected files. Either way, I would have expected scrub to do something other than indefinitely hang and prevent itself from being terminated (I even had to cold boot the computer to shut it down). Matt