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=-8.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 76873C2D0A3 for ; Tue, 3 Nov 2020 20:34:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 30B9921556 for ; Tue, 3 Nov 2020 20:34:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=toxicpanda-com.20150623.gappssmtp.com header.i=@toxicpanda-com.20150623.gappssmtp.com header.b="a9akMtOv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729316AbgKCUeE (ORCPT ); Tue, 3 Nov 2020 15:34:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726709AbgKCUeE (ORCPT ); Tue, 3 Nov 2020 15:34:04 -0500 Received: from mail-qk1-x743.google.com (mail-qk1-x743.google.com [IPv6:2607:f8b0:4864:20::743]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2BEE8C0613D1 for ; Tue, 3 Nov 2020 12:34:04 -0800 (PST) Received: by mail-qk1-x743.google.com with SMTP id l2so16472298qkf.0 for ; Tue, 03 Nov 2020 12:34:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=toxicpanda-com.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=G+SSR15DQBKvTxVOsp2F9KH9mXyMA3FXaccfbx5+qsc=; b=a9akMtOvXnI1aPgTwLWjBbWXrE6S11GNXigbN319ZDzSc0nSPqn5xQ8U7MRnj0YMFt SScBaNHumqJq4it5hWAkYzL4QorOgY1B9RvPzkxTHL5K7YMVGCLD1H745jtu4ewbeFEk dZZpBKler5NKNH5Fu1XcfVwzkfkf7H186AamYEZG63k1KJY8sb5Kkpb96a2N1fp/RgtM 5RF95wtClgFZgyAvvl2Mx3uHKPOfZs1Sf3av2C6XdSxIIa18sk5/T9hOfNYCDacdz5jM OhBUIuqNpqrsxdiXksbBGGDk8GVSdnLsrOh2FGwQWRWIn4LQGQNLV0PMfPY7rLPqLfcI Txug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=G+SSR15DQBKvTxVOsp2F9KH9mXyMA3FXaccfbx5+qsc=; b=FizHBzwwg6Tfwyw8c4wjikUIBwozN/TaC8aPNAKgGho/rfZ7ojjttt6EqZpEso21CB Li5e4Qzr2riF4RY1t6kxJ3Xa3rh94fFcxCkEjnjq09+EQRwB9wZf1bTn/UsUBWwaJFFN C91dZr0hecuTS8CaAZwoxIlyaAgIImwTOrOmqJuh6hJqfC9NamN75n75TqifoD9KKZOb 8i27/7NSfo+kFUaAvVdi59SivVG/jPZEVwY50FngwvMRawXFumbj4hCaN7LfgrUc155F Ymxe3AxFFtv8n5nVcSaN8imxnfEFdanq9umk/G5lSNTpIZtgLiPlvTW5UxSi/Xtxt5wv 3YGQ== X-Gm-Message-State: AOAM530Ia/Zuzjiw+xsD9cnWUUm9CYOvsx/+ypPoxHXkz/LZdYRN6koF Tqv8lObm0TuOgWOxb204MVAxnyOTDq7gMdio X-Google-Smtp-Source: ABdhPJypJXrMtRql366HHfGVWlLvnlz+j0JsBxVa46ljIJQP1sTloI4GggvVtEu69Ce+4t6K5glzmA== X-Received: by 2002:a37:88c:: with SMTP id 134mr21149173qki.17.1604435643272; Tue, 03 Nov 2020 12:34:03 -0800 (PST) Received: from [192.168.1.45] (cpe-174-109-172-136.nc.res.rr.com. [174.109.172.136]) by smtp.gmail.com with ESMTPSA id 82sm11167619qke.130.2020.11.03.12.34.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 03 Nov 2020 12:34:02 -0800 (PST) Subject: Re: [PATCH v9 34/41] btrfs: support dev-replace in ZONED mode To: Naohiro Aota , linux-btrfs@vger.kernel.org, dsterba@suse.com Cc: hare@suse.com, linux-fsdevel@vger.kernel.org References: From: Josef Bacik Message-ID: Date: Tue, 3 Nov 2020 15:34:01 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 10/30/20 9:51 AM, Naohiro Aota wrote: > This is 4/4 patch to implement device-replace on ZONED mode. > > Even after the copying is done, the write pointers of the source device and > the destination device may not be synchronized. For example, when the last > allocated extent is freed before device-replace process, the extent is not > copied, leaving a hole there. > > This patch synchronize the write pointers by writing zeros to the > destination device. > > Signed-off-by: Naohiro Aota Reviewed-by: Josef Bacik Thanks, Josef