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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 F105CC433B4 for ; Fri, 14 May 2021 14:30:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ADEFE6144A for ; Fri, 14 May 2021 14:30:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231751AbhENObP (ORCPT ); Fri, 14 May 2021 10:31:15 -0400 Received: from vps.thesusis.net ([34.202.238.73]:59746 "EHLO vps.thesusis.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230141AbhENObP (ORCPT ); Fri, 14 May 2021 10:31:15 -0400 Received: from localhost (localhost [127.0.0.1]) by vps.thesusis.net (Postfix) with ESMTP id 6A7CA21042; Fri, 14 May 2021 10:30:03 -0400 (EDT) Received: from vps.thesusis.net ([127.0.0.1]) by localhost (vps.thesusis.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ArY7Ln9a4yY7; Fri, 14 May 2021 10:30:03 -0400 (EDT) Received: by vps.thesusis.net (Postfix, from userid 1000) id 2C01B21040; Fri, 14 May 2021 10:30:03 -0400 (EDT) References: <8626adeb-696c-7778-2d5e-0718ed6aefdb@redhat.com> <6db10ef4-e087-3940-4870-e5d9717b853f@thelounge.net> <20210508134726.GA11665@www5.open-std.org> <87y2co1zun.fsf@vps.thesusis.net> <20210512172242.GX1415@justpickone.org> <877dk2r5s3.fsf@vps.thesusis.net> <20210513155956.6m6yek3t4ln464bw@bitfolk.com> User-agent: mu4e 1.5.7; emacs 26.3 From: Phillip Susi To: Andy Smith Cc: list Linux RAID Subject: Re: raid10 redundancy Date: Fri, 14 May 2021 10:28:52 -0400 In-reply-to: <20210513155956.6m6yek3t4ln464bw@bitfolk.com> Message-ID: <871ra95qxg.fsf@vps.thesusis.net> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-raid@vger.kernel.org Andy Smith writes: > While the *layout* would be identical to RAID-1 in this case, there > is the difference that a single threaded read will come from both > devices with RAID-10, right? No, since the data is not striped, you would get *worse* performance if you tried to do that.