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=-2.1 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, 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 41692C433E0 for ; Thu, 18 Jun 2020 02:28:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1942A21534 for ; Thu, 18 Jun 2020 02:28:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="LTVLGBie" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732272AbgFRC25 (ORCPT ); Wed, 17 Jun 2020 22:28:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57350 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729704AbgFRC2p (ORCPT ); Wed, 17 Jun 2020 22:28:45 -0400 Received: from mail-pj1-x1044.google.com (mail-pj1-x1044.google.com [IPv6:2607:f8b0:4864:20::1044]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 72889C06174E for ; Wed, 17 Jun 2020 19:28:45 -0700 (PDT) Received: by mail-pj1-x1044.google.com with SMTP id ne5so1841299pjb.5 for ; Wed, 17 Jun 2020 19:28:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=to:from:subject:message-id:date:user-agent:mime-version :content-transfer-encoding:content-language; bh=xjAKeaybTuFLOgNqS07QUJRxMzQrG4AfDFgEIWSGnwc=; b=LTVLGBieKQIboS1ZK+hVa4Fyl/zL+AwQZWauBHccH7FsYgYokzLV5NYyiyEtOCl2Eu KqUIoIXupBTm/Ws3piHi1/Noyxmvg6Ej+qZ/WGWEdtj8HPtsl1ve11ZWa7YVPVvD0KEh EfpCgAFP7vkAAw07KoedC+zw6kRroMAZXeMY1ZB6o72HbtacFcC3U4xvcDdZd31gh0TQ JjduJVeN+a31hhoAwirgkc6/MC3xpECoS3IGQgeY/yygP0xE5yK/ZYqshGX6ENfe2iwb kXEegVrBVH3RK+aKCNcy+ylh0jVAg+/jPLumCLqX7WKgTzxvGfKdoFV8qtMRP677nNPU Tt2A== 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=xjAKeaybTuFLOgNqS07QUJRxMzQrG4AfDFgEIWSGnwc=; b=q32CuxWghp+JJcuFysfa9m0XesO5To8Tsyo10SjdYZLojrfqllrG+QYoGnkBgJwMpU LLY1AxWpXdlFPZhcn3qMxcnOjWHwwJ+eOEqoxt+ZGVDOdjEbpcVqYBHxM2vEnkObRZ/Y /XetP9icZiJ9N5jsORJGz2AWhQ7Yv5k3ueBmGZu5QFJIFqLrK5Q2xgUcwWJnSn36eC5T XFP9LUttQpTUBpa4b7ZwP2cKZldkKsu5RC2qlLn9lxhG+CgX5Ny8nAiAH7OnCkh++rE7 oPDl0XSaFC96ZgQ5Vs9MTe6mVX4UbNrcgZRzAliQL9zSHjNnolWIoTLiN8mHw2hr/OXM Y/gQ== X-Gm-Message-State: AOAM531IYXwEim9fI9jZHBRcFVqdTBngHnJHiK9EQBeB0OveIxhnzYjL /nk/ju2Z5uzGerhoQZCUGCaJVJ9V X-Google-Smtp-Source: ABdhPJy/9CF5/BJKhw8FkvIpvbULQdPMFasq82m6NXRhgeQszB3wS/04//g8WIKh8T1K4ZCQ33lcrQ== X-Received: by 2002:a17:90a:cf17:: with SMTP id h23mr1970047pju.139.1592447324794; Wed, 17 Jun 2020 19:28:44 -0700 (PDT) Received: from [192.168.178.53] ([61.68.239.179]) by smtp.gmail.com with ESMTPSA id r9sm1105743pfq.31.2020.06.17.19.28.43 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 17 Jun 2020 19:28:44 -0700 (PDT) To: linux-btrfs@vger.kernel.org From: DanglingPointer Subject: btrfs-dedupe broken and unsupported but in official wiki Message-ID: <16bc2efa-8e88-319f-e90e-cf8536460860@gmail.com> Date: Thu, 18 Jun 2020 12:28:41 +1000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-AU Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org btrfs-dedupe is currently broken and no longer actively supported. It no longer builds with current rustc v1.44.0 with cargo It is in the official btrfs Deduplication wiki:     https://btrfs.wiki.kernel.org/index.php/Deduplication There's no real active community and proper QA, reviewing and vetting. A poster in the issues area of the projects Github location stated that even if fixed, it may not function correctly due to BTRFS having evolved since the tool was designed created. There's just too many unknowns with this BTRFS specific dedupe tool. People using your official wiki and trying to use that deduplication program could inadvertently destroy their data through nativity or accident.  Especially if they start trying to fix the code. I recommend you remove it from your website or at least put large warnings there that it is broken (which looks ugly, I would rather only stuff that works were there since it isn't your project anyway but some 3rd party).