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 EFE99C433DF for ; Mon, 1 Jun 2020 06:05:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C426B206C3 for ; Mon, 1 Jun 2020 06:05:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="uClaMosY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726117AbgFAGE7 (ORCPT ); Mon, 1 Jun 2020 02:04:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37592 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726110AbgFAGE7 (ORCPT ); Mon, 1 Jun 2020 02:04:59 -0400 Received: from mail-pj1-x1042.google.com (mail-pj1-x1042.google.com [IPv6:2607:f8b0:4864:20::1042]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 090AAC061A0E for ; Sun, 31 May 2020 23:04:59 -0700 (PDT) Received: by mail-pj1-x1042.google.com with SMTP id m2so387109pjv.2 for ; Sun, 31 May 2020 23:04:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:subject:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=0ixIfgR76rR0lA/8CDFY6EhXkzH4KhYv9Hu5igSrAPM=; b=uClaMosYP42tfqb9cfhHHkvuXTQvfMuzdTPR6bcQeAXvtuqtWtEkLRGkXV8B4k8xLO Z78r8Hy+au+AutR/35/la/8Knv7sYn6TDknHbHhe4jKXwPi36Hju4ag+K78kqN2pbwo4 I9rxUyxMMRoqo8tN0/MMktSLqaMJBgd538xskgZyBt/SrewdPzjOxNaGp+OMsHgD/zha ESrD61QAZR7efs6rsQ1Y/6sIiyoWyDA8QLU5UaDsw0DA5B5aapgB0rHciXirZJAJ24pc e4WKop0G58x5+gnGPBq/cUEJftOpk1iXODG2mEJWdTVaNVZRrBoAMgqrZTXRgya0sliY otWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:subject:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=0ixIfgR76rR0lA/8CDFY6EhXkzH4KhYv9Hu5igSrAPM=; b=QQuGWGsN3qp6gE2AfHJEp0lWS8qnFjyrPqGWp4ibuW2yqS7mC1Y/8vbf5DlBcBC1uJ FyqdlhXa/e4uCmvHCsnx6cO0LZUd0izImtht/SLq27dbIBVGNtMmWXgyEIYxDgDTCLoE PXyYpG/FqsfOUfwzdAbO/eEYGSszZUAIrvpXJ76MAplq45O2fr+hhLB2JQEdfCrC9gx4 uCQTQffDbVCG0hDg2/h0/l0XyZuBj7/kzu2ecbiOH/juZIeBXy1sUL+byyehkEfb8i1A Xj6ghcjGpP9SPnlvtpQ6yXTh9q4+WFO0hulYvqir0WKTOp0a117HJ68769NK0+iR7k/7 k0nQ== X-Gm-Message-State: AOAM530Rzjry7CZO4oL02QnVHTeiYr9TO4xHgcUDaUaGKK5m5OM11an6 io5HNzEzqWmhUCkvrnWGa0o= X-Google-Smtp-Source: ABdhPJw6kiycKHFCffK70j83498fb2SOL/iB3L9OWlOZOXhE+zIN7a19CaWrkKUH9pT5BZnjSILcKg== X-Received: by 2002:a17:902:d914:: with SMTP id c20mr5524153plz.269.1590991498581; Sun, 31 May 2020 23:04:58 -0700 (PDT) Received: from ?IPv6:2406:3003:2006:2288:8cce:f943:4082:634d? ([2406:3003:2006:2288:8cce:f943:4082:634d]) by smtp.gmail.com with ESMTPSA id x77sm6770304pfc.4.2020.05.31.23.04.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 31 May 2020 23:04:57 -0700 (PDT) From: Anand Jain X-Google-Original-From: Anand Jain Subject: Re: [BUG][PATCH] btrfs: a mixed profile DUP and RAID1C3/RAID1C4 prevent to alloc a new chunk To: Qu Wenruo , Goffredo Baroncelli , linux-btrfs@vger.kernel.org Cc: David Sterba References: <20200530185321.8373-1-kreijack@libero.it> Message-ID: Date: Mon, 1 Jun 2020 14:04:54 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org > > This in facts exposed the long existing bug that btrfs has no on-disk > indicator for the target chunk time, thus we need to be "creative" to > handle chunk profiles. > > I'm wondering if we could add new persistent item in chunk tree or super > block to solve the problem. > +1. That will also fix the chunk size discrepancy between mkfs and kernel. Thanks, Anand > Any idea on this, David? > > Thanks, > Qu > >> >> [*] https://lore.kernel.org/linux-btrfs/517dac49-5f57-2754-2134-92d716e50064@alice.it/ >>