From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([65.50.211.133]:55650 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750745AbdHLHmx (ORCPT ); Sat, 12 Aug 2017 03:42:53 -0400 Date: Sat, 12 Aug 2017 00:42:48 -0700 From: Christoph Hellwig To: Christoph Anton Mitterer Cc: Qu Wenruo , Btrfs BTRFS Subject: Re: RedHat 7.4 Release Notes: "Btrfs has been deprecated" - wut? Message-ID: <20170812074248.GA3352@infradead.org> References: <84806456-eed9-00b9-b3f6-99e46cefba33@swiftspirit.co.za> <4c094049-f8c8-a0ea-674b-33c6905d744a@gmx.com> <1502496618.6092.6.camel@scientia.net> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 In-Reply-To: <1502496618.6092.6.camel@scientia.net> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Sat, Aug 12, 2017 at 02:10:18AM +0200, Christoph Anton Mitterer wrote: > Qu Wenruo wrote: > >Although Btrfs can disable data CoW, nodatacow also disables data  > >checksum, which is another main feature for btrfs. > > Then decoupling of the two should probably decoupled and support for > notdatacow+checksumming be implemented?! And how are you going to write your data and checksum atomically when doing in-place updates?