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=-10.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,NICE_REPLY_A,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 0F25BC433E0 for ; Tue, 12 Jan 2021 19:38:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C5E172310A for ; Tue, 12 Jan 2021 19:38:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393032AbhALTiW (ORCPT ); Tue, 12 Jan 2021 14:38:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47348 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392184AbhALTiW (ORCPT ); Tue, 12 Jan 2021 14:38:22 -0500 Received: from mail-qv1-xf2d.google.com (mail-qv1-xf2d.google.com [IPv6:2607:f8b0:4864:20::f2d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AD242C06179F for ; Tue, 12 Jan 2021 11:37:41 -0800 (PST) Received: by mail-qv1-xf2d.google.com with SMTP id az16so1462258qvb.5 for ; Tue, 12 Jan 2021 11:37:41 -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=t/DFjpjGCjobewoVfVJhwj7XY2Y3n6U3nLJ5qpNB6Ro=; b=suCB2gWRDi80QAJgcvfxL6TzKyB+MYYdM1uzugI/IxZYgvCUEp36pCI95FYGWlkgms Mlqu1qOBwp8qQUHO6LwMFgdBRlmlInV1xeV3xkL2GxxS5N7MHExCHwipIq2AhNqhM/+i XoM0f3J+eHNheAF9//JO+0jOMwlvAbPD0NjR0MboGfT2Q+rBxt+nM3H3V/BIQETLEHm6 6QYpqQDPJSV4XVtjed/nbjI5B/DIzflH3OVPzYPgeZahEfBOXVDzMKMuTw0xqSWK8LMl Js4buaBZ/LCJ/j5Y8ee+a6VpNnOqCrr+jIJ1JwQAXedNa0jjNZ2ucc0DT9HlmLm+w8A7 RUNQ== 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=t/DFjpjGCjobewoVfVJhwj7XY2Y3n6U3nLJ5qpNB6Ro=; b=THU1lqHQ3Er4HH+kjwBNrmEeHeqTLXtGL0URNWeXAbPX8RZvOkXDJ7CWRT6iCORXsg S5M8pIWda/ZL8JVBrtDI22vc+VFB6wxzGYnwWeGLAUYpZJuxpzFwoSuSZWDP2yqzub7E kjmDJfot8+/7MGEzGbkte5ooiPNWfLKKL3SeNVMUqJfYiyp8t9hI1oo896RedwyPhnoX osr7eXggk8yJU47yNFostTMdLeRnYZ4zSnuItjl6ryfLLWhhDXY9IDb8lBVpuurp8ItR /GrvS2vG+8ESJYrDac6ck2fWcRzQhDf9tMLhskyJXzHs8Q6UDCCRBAUWmOfGtsHFXLyK JB+g== X-Gm-Message-State: AOAM531LUisxCclE+QbJN9WESPxXVAAWNo6HrMFhLQmdSjnRHHLhxZHs mxXde70s4T939925p2U3qp0lHw== X-Google-Smtp-Source: ABdhPJx187wdJzGwlrDjD5zL4xF/Na+coJtEQix/PUT4spHzVHH5Av5FWDSK82hjMwlExN/Acp9eEA== X-Received: by 2002:a0c:edab:: with SMTP id h11mr1060212qvr.23.1610480260892; Tue, 12 Jan 2021 11:37:40 -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 r15sm1869840qke.55.2021.01.12.11.37.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 12 Jan 2021 11:37:40 -0800 (PST) Subject: Re: [PATCH v11 34/40] 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, Jens Axboe , Christoph Hellwig , "Darrick J. Wong" References: <06add214bc16ef08214de1594ecdfcc4cdcdbd78.1608608848.git.naohiro.aota@wdc.com> <019923ef8aca1d3d8ccddb439e397df35cfe02a7.1608608848.git.naohiro.aota@wdc.com> From: Josef Bacik Message-ID: <1708e846-f6be-840a-b164-efed02fab7cd@toxicpanda.com> Date: Tue, 12 Jan 2021 14:37:39 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <019923ef8aca1d3d8ccddb439e397df35cfe02a7.1608608848.git.naohiro.aota@wdc.com> 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-fsdevel@vger.kernel.org On 12/21/20 10:49 PM, 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