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 0EC2BC433FE for ; Sat, 8 Jan 2022 19:53:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232505AbiAHTxF (ORCPT ); Sat, 8 Jan 2022 14:53:05 -0500 Received: from mout.web.de ([217.72.192.78]:46135 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230057AbiAHTxE (ORCPT ); Sat, 8 Jan 2022 14:53:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1641671581; bh=1WVD8sonhTLURoKUip2kjYjg4FF2hd+FCM0q+/QbYDM=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject:In-Reply-To:References; b=HI+LsoJjrpJarY5PC2jnWthra6+hzz1n/twlgNAR+jRHaKvlsvEf7D22sld9bYOse xeC+jRGo34sbkwQR0+iUnuG07XBH8rc8EZ5HLembkdVjteEhxro9OsYumFVQB+Kukc og9z8r9D9ccYTK9+Xu9JSo7v/Ge9eL99Ldjj07cw= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from gecko ([46.223.151.24]) by smtp.web.de (mrweb105 [213.165.67.124]) with ESMTPSA (Nemesis) id 1MvKbj-1mF0Si1UDh-00r490; Sat, 08 Jan 2022 20:53:01 +0100 Date: Sat, 8 Jan 2022 19:52:59 +0000 From: Lukas Straub To: Qu Wenruo Cc: Linux FS Devel , "linux-block@vger.kernel.org" , "dm-devel@redhat.com" , linux-raid@vger.kernel.org Subject: Re: [dm-devel] Proper way to test RAID456? Message-ID: <20220108195259.33e9bdf0@gecko> In-Reply-To: <0535d6c3-dec3-fb49-3707-709e8d26b538@gmx.com> References: <0535d6c3-dec3-fb49-3707-709e8d26b538@gmx.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:AGazrWY5rmVs3KLflW/ztv0A9Mbn86f0R+FugVm+ZYTHp7FWmhP UvJZ7Mc6s9oUNuBwc+domY47DVsmzp1hcddFyhihrJZm94jzAM/cdMUybsVRXFVs1ix97Gr yUM0jx4iKxPulgBfO3FqcjTf+8YUYTlwb+qhzXu6GDGY4VsOiMiFlnsMswKbB4rsGTkCp3i U3YHoiSxmX6OtjPgyUEKw== X-UI-Out-Filterresults: notjunk:1;V03:K0:ef3i2KUnSBY=:4g/W591zD1UlL8Yb2WX+B8 r1UoDoaKzksXCE4os1w3nACPuh/ySwzvZGc413W+WlWuW2T/NfQruF4er6nRFvayFLnKt2eOL qOmeHqQdoaJ0sfRWyhmsv2GT9ggBKpW4K6qlhaJ3ygAxSOGQs0UeSU+yDuS1MrJCclUAkDo4B rrnPk2g/7656zG+1Qm40Vqk7f657JeIcG/HNLtHSLz7I1102SltZHV+tUGj+l4BwRFX1sWvl9 RbnFGBXr/44y3bLF7rN4FH1IlPFja6M4nKK2nXy6znDC+d9V/iXd8tjyR9JIZBuDks3H0coWX 5kugKKRpwzONWZaqD//w01j7qrD/CRoC08845Y+lJZ6CtB/enhSnWY30ReDzQXJVAvsTY+Agg nz2LhQ4aEq98sXKFpqZIV5YnKVdrfwTo+yGBRT43GGcjhqrtbj4DwF9K4FPxQ4W82CUUya+lk AUn3V1imD1vSz8DzhLhsEAES3RF3vRAsvUg/0nlmKGJ4VashcP3TdmarvRAfd+2SMB81r5ni+ tVHW1TmYdzq4IvdWnUAko06M8a7fLZqYdKgTItuti8YBiE5XjeHN+CZjXDAUIdHqAhilU0pTM dvAXUsgEs2mddPocJuVGy39SD/kxiLp2XWPW2TaUuXhBoMuWSLctr6mYYNl/b7Bxvy+ExJQq9 cowacETdAxgBsXiRiyUWV6Ui8OrYG6gK7cuFWEQrPr+V8/ZQgMB3TCErUoDfjLi7uz3jT1oF7 lbvObD046YkIHxZg8b7qNOcLTJaZ5o+aJ4bhG7CrXMISbqBIhGu++jd79q1FFeswdF41qC1Yg ppSNtBX98EFoX2I5ox7zGvaoqo0HWVeaPpuL8XKaVNv0XfRyg8OOu4WdBF7C77FPDKjNU34Za Ze4ePujn1Mo0uMdJNM3gOqBr1APf4u8wUp68Jr8xogp/7st9gpHbf3bUETu/xkOsauZXSDLIP tdT512V6gxLGtQaunF2jDLB2h1btyWjTKm+00aD2kH3pX9olpgIfvulpoRJKz6gJk+XN30iRq AF49TnIRQfiaQsN51E0+pDGwJVQXmWg1gqjFs0QQfg3E3N9Wj4enPK4qBPKKm6Ql436D5KW1w UlmJoRr99Y61bc= Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org CC'ing linux-raid mailing list, where md raid development happens. dm-raid is just a different interface to md raid. On Fri, 7 Jan 2022 10:30:56 +0800 Qu Wenruo wrote: > Hi, > > Recently I'm working on refactor btrfs raid56 (with long term objective > to add proper journal to solve write-hole), and the coverage of current > fstests for btrfs RAID56 is not that ideal. > > Is there any project testing dm/md RAID456 for things like > re-silvering/write-hole problems? > > And how you dm guys do the tests for stacked RAID456? > > I really hope to learn some tricks from the existing, tried-and-true > RAID456 implementations, and hopefully to solve the known write-hole > bugs in btrfs. > > Thanks, > Qu > > > -- > dm-devel mailing list > dm-devel@redhat.com > https://listman.redhat.com/mailman/listinfo/dm-devel > =2D-