From owner-freebsd-geom@FreeBSD.ORG Mon Jul 22 11:36:54 2013 Return-Path: Delivered-To: freebsd-geom@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id D4522663 for ; Mon, 22 Jul 2013 11:36:54 +0000 (UTC) (envelope-from emorrasg@yahoo.es) Received: from nm3-vm0.bullet.mail.ird.yahoo.com (nm3-vm0.bullet.mail.ird.yahoo.com [77.238.189.213]) by mx1.freebsd.org (Postfix) with SMTP id 1ACB327D8 for ; Mon, 22 Jul 2013 11:36:53 +0000 (UTC) Received: from [77.238.189.49] by nm3.bullet.mail.ird.yahoo.com with NNFMP; 22 Jul 2013 11:36:52 -0000 Received: from [46.228.39.66] by tm2.bullet.mail.ird.yahoo.com with NNFMP; 22 Jul 2013 11:36:52 -0000 Received: from [127.0.0.1] by smtp103.mail.ir2.yahoo.com with NNFMP; 22 Jul 2013 11:36:52 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.es; s=s1024; t=1374493012; bh=smvXBDE4YBaz0ymI4RzH0wuJsDSdfwWb6fHEcHpRJrM=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:X-Rocket-Received:Date:From:To:Subject:Message-Id:X-Mailer:Disposition-Notification-To:Mime-Version:Content-Type:Content-Transfer-Encoding; b=w5/O8JXYmya4UxUybyDJHGTiLqDxv29rlghwQbncd4n78zAJTQd9201va/Yvk6Wp8NYL808a39nJEgjT1+OjPL4YSfhTON7ToE8C2B74Ek596CK7NyyNZTQLu0KLrDgJHF3QxENMnVeZbUNeWvabofvzUkPI3XVMQeeDoUpWUjE= X-Yahoo-Newman-Id: 412887.83101.bm@smtp103.mail.ir2.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: Doj7GaYVM1k3ykdnMS6Hw18ulCy.ETzQmuViHl5rf5QegjM ZoNBWtGRCpFEm_OxCCDvXQ3TrNUE3uRVDPgm3UM_bBbWd.ygpEHxvXwMUB1P LpatAf2HyiUaTM4GSMPWgM23WgQFNR0Ny.Qb9lV8mgZ8tS1cFtpliTjcSmnM 8v6a8SNy3xmKu2_Vqjju6QtkEVkusFdm80s5fyJjV0U1GRxQoO2rtglap7ws AJU8_VdL11SCJBQ3Ww6iZNnU3kMNYuhRAVzYB7k5LgIHkWB7eisNTZMC5Wyk qv3WXEOCjG_bdWAYLiztOBsVMbp9BG572fE1AdpPAlWw1Afn1OhX.j4VaOpW AxuGYmMkbW0mYsJZJfX8fF97JfxZul1edQbgAf2NxHQDHWxPnnoc8H6VNTF. P_HRqiOEa3BWzPU16H18xn5ZBbRNZAgvZ7UXcK6UfmIpY6mY5CCtqrdTChp_ rAr5MrWvZTQq0RSIyP5OSeSDdHn0b X-Yahoo-SMTP: mX392iiswBAeJNdO_s.EW62LZDJR X-Rocket-Received: from camibar.emorras.eu (emorrasg@85.219.45.142 with ) by smtp103.mail.ir2.yahoo.com with SMTP; 22 Jul 2013 11:36:52 +0000 UTC Date: Mon, 22 Jul 2013 13:36:51 +0200 From: Eduardo Morras To: freebsd-geom@freebsd.org Subject: Does geom_raid1e support raid10e? Message-Id: <20130722133651.a0b2f7a97433fb1ac90e2d2c@yahoo.es> X-Mailer: Sylpheed 3.3.0 (GTK+ 2.24.19; amd64-portbld-freebsd9.1) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Jul 2013 11:36:54 -0000 Hello, I ask this question on -questions list last week and get no answer, I post it here then. Hello, I want to know if geom_raid1e support raid10e level too. The difference between them is that 1e duplicates the 32-64-128-whatever block data size in all n disks in the raid1e but raid10e only between n/2 and n(1) (a try to show it below), making raid10e bigger and more flexible than plains raid1/raid1e or raid10 respectively. In raid1e: Disk D1 D2 D3 D4 D5 Block a1 a1 a1 a1 a1 Block a2 a2 a2 a2 a2 Block a3 a3 a3 a3 a3 In raid10e: Disk D1 D2 D3 D4 D5 Block a1 a1 a1 a2 a2 Block a2 a3 a3 a3 a4 Block a4 a4 a5 a5 a5 In these examples, with block size of 128KB, raid1e will survive to fail of 4 disks and stores 128*3 = 384 KB; raid10e will survive to fail of 2 disks and stores 128*5 = 640 KB. (1)In some literature, raid10e duplicates between 2 and n disks. --- --- Eduardo Morras