From owner-freebsd-bugs@FreeBSD.ORG Fri Jun 29 13:30:13 2012 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D15D81065673 for ; Fri, 29 Jun 2012 13:30:13 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id A9DE88FC15 for ; Fri, 29 Jun 2012 13:30:13 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id q5TDUDHK033463 for ; Fri, 29 Jun 2012 13:30:13 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q5TDUDE0033459; Fri, 29 Jun 2012 13:30:13 GMT (envelope-from gnats) Resent-Date: Fri, 29 Jun 2012 13:30:13 GMT Resent-Message-Id: <201206291330.q5TDUDE0033459@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Sayetsky Anton Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3F1101065794 for ; Fri, 29 Jun 2012 13:24:09 +0000 (UTC) (envelope-from jason@jw.lds.net.ua) Received: from jw.lds.net.ua (jw.lds.net.ua [193.192.37.74]) by mx1.freebsd.org (Postfix) with ESMTP id B82528FC12 for ; Fri, 29 Jun 2012 13:24:08 +0000 (UTC) Received: from jw.lds.net.ua (localhost [127.0.0.1]) by jw.lds.net.ua (8.14.5/8.14.5) with ESMTP id q5TDO6R0030778 for ; Fri, 29 Jun 2012 16:24:06 +0300 (EEST) (envelope-from jason@jw.lds.net.ua) Received: (from jason@localhost) by jw.lds.net.ua (8.14.5/8.14.5/Submit) id q5TDO14h030776; Fri, 29 Jun 2012 16:24:01 +0300 (EEST) (envelope-from jason) Message-Id: <201206291324.q5TDO14h030776@jw.lds.net.ua> Date: Fri, 29 Jun 2012 16:24:01 +0300 (EEST) From: Sayetsky Anton To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Cc: Subject: bin/169542: gpart: partition alignment doesn't works on MBR X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Sayetsky Anton List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Jun 2012 13:30:14 -0000 >Number: 169542 >Category: bin >Synopsis: gpart: partition alignment doesn't works on MBR >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Jun 29 13:30:13 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Sayetsky Anton >Release: FreeBSD 8.3-RELEASE-p1 amd64 >Organization: >Environment: System: FreeBSD jw.local 8.3-RELEASE-p1 FreeBSD 8.3-RELEASE-p1 #0 r235504: Wed May 16 14:33:18 EEST 2012 root@j.local:/tmp/obj/mnt/garbage/build/src/sys/JASONW amd64 >Description: Alignment values computed by gpart are incorrect when using MBR scheme. When using GPT - they are correct. As wee can see below, alignment & size of partitions isn't divideable by 8 when using "-a 4k" >How-To-Repeat: ********************* MBR ************************** root@jw:~# mdconfig -s 2048m md0 root@jw:~# gpart create -s mbr md0 md0 created root@jw:~# gpart show md0 => 63 4194241 md0 MBR (2.0G) 63 4194241 - free - (2G) root@jw:~# gpart add -a 4k -t freebsd -s 100m md0 md0s1 added root@jw:~# gpart add -a 4k -t freebsd md0 md0s2 added root@jw:~# gpart show md0 => 63 4194241 md0 MBR (2.0G) 63 63 - free - (31k) 126 204687 1 freebsd (100M) 204813 63 - free - (31k) 204876 3989412 2 freebsd (1.9G) 4194288 16 - free - (8.0k) ********************* MBR ************************** ********************* GPT ************************** root@jw:~# mdconfig -s 2048m md0 root@jw:~# gpart create -s gpt md0 md0 created root@jw:~# gpart add -a 4k -t freebsd -s 100m md0 md0s1 added root@jw:~# gpart add -a 4k -t freebsd md0 md0s2 added root@jw:~# gpart show md0 => 34 4194237 md0 GPT (2.0G) 34 6 - free - (3.0k) 40 204800 1 freebsd (100M) 204840 3989424 2 freebsd (1.9G) 4194264 7 - free - (3.5k) ********************* GPT ************************** >Fix: >Release-Note: >Audit-Trail: >Unformatted: