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 46987C636CC for ; Mon, 13 Feb 2023 06:50:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229681AbjBMGue (ORCPT ); Mon, 13 Feb 2023 01:50:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44548 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229436AbjBMGud (ORCPT ); Mon, 13 Feb 2023 01:50:33 -0500 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6258486A9 for ; Sun, 12 Feb 2023 22:50:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=JIx1AXrkBD6Qpqbja8QduT7ovSu4bLJZceghjJalhrE=; b=3qywWXDSkYdNt407T9iZKtwJxo CHWepuB8OBzdXz9F5GDiL3EH7HEb57F+twA+TXby9U2PEc6c4NwY7pdAMz1JoIedLKJIiCQJcIJRk Rkao3sO1EEdxS6Bg9fcjQ96flrmOn50zh/Y1Gh9W8iV+6OTpmzdScahUK/3ScbM6gF6+7nogViL/1 eVx+qWuNYQeZRLsgUfKiJs+c393Ym557vgyZL0i3rUPHEiFRQ9k5Gqczy0gAFk9d8FOxWp3zEY+UZ v8oyBLj9byvPWfpEea22Y/BTf6hOQuofSGfKDVHdFC7VJE+ca2cG9QjasNcmA4W5aSYkRhePbHm/t sW/Oa6ZQ==; Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pRSfW-00DO3S-Uk; Mon, 13 Feb 2023 06:50:30 +0000 Date: Sun, 12 Feb 2023 22:50:30 -0800 From: Christoph Hellwig To: Johannes Thumshirn Cc: linux-btrfs@vger.kernel.org Subject: Re: [PATCH v5 02/13] btrfs: add raid stripe tree definitions Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Wed, Feb 08, 2023 at 02:57:39AM -0800, Johannes Thumshirn wrote: > Add definitions for the raid stripe tree. This tree will hold information > about the on-disk layout of the stripes in a RAID set. > > Each stripe extent has a 1:1 relationship with an on-disk extent item and > is doing the logical to per-drive physical address translation for the > extent item in question. So this basially removes the need to trak the physical address in the chunk tree. Is there any way to stop maintaining it at all? If not, why?