From owner-freebsd-fs@FreeBSD.ORG Tue Jan 3 14:38:24 2012 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E20981065687 for ; Tue, 3 Jan 2012 14:38:24 +0000 (UTC) (envelope-from peter.maloney@brockmann-consult.de) Received: from moutng.kundenserver.de (moutng.kundenserver.de [212.227.17.10]) by mx1.freebsd.org (Postfix) with ESMTP id 8DF2C8FC16 for ; Tue, 3 Jan 2012 14:38:24 +0000 (UTC) Received: from [10.3.0.26] ([141.4.215.32]) by mrelayeu.kundenserver.de (node=mrbap4) with ESMTP (Nemesis) id 0Lp6ay-1SMuQl22dg-00esMH; Tue, 03 Jan 2012 15:38:23 +0100 Message-ID: <4F0312DF.8050004@brockmann-consult.de> Date: Tue, 03 Jan 2012 15:38:23 +0100 From: Peter Maloney User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.23) Gecko/20110922 Thunderbird/3.1.15 MIME-Version: 1.0 To: freebsd-fs@freebsd.org References: <4F003EB8.6080006@dannysplace.net> <4F02FC42.1040103@dannysplace.net> <4F0311F2.7050209@brockmann-consult.de> In-Reply-To: <4F0311F2.7050209@brockmann-consult.de> X-Enigmail-Version: 1.1.2 X-Provags-ID: V02:K0:LkK3FPxclQb+T5g6y7VyMBnw8ABAaCqzz6aVoSF3Y83 cnXIp02vOUUD+4SoZzPmemRX58NOZXIqiVq6kTukNLWaEkjFpX p03g/UWE09sK1BjyKmu8r9SeBq1gb8I/rSSR+y3r0jIn7Iymro bRa2XMJ9qtcBl5s72l5AUYMFv3zlvPIyEUrnO6DVgYhA9VjLI4 NSFsq+8aSP4dlNZCjF5TyJTDESjWRu2tFrdwg1lDhG+DXJlcV8 1hqSi82sHOhSkVaFvhbrzN5P2x7QuJD+HvZLeCQwVW0UFal8JX +LRaWT5fCeBAttRyTIh+433+0A0pkq+uQsJ7Otlcy8dxl06AkM Wk1IHzsFJPuFcSDLam83KUZz8bL1PkDi/loagfiZn Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Re: ZFS With Gpart partitions X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Jan 2012 14:38:25 -0000 On 01/03/2012 03:34 PM, Peter Maloney wrote: > On 01/03/2012 02:01 PM, Dan Carroll wrote: >> On 3/01/2012 10:27 PM, krad wrote: >>> Just a not you dont appear to be 4k aligned on this drive. As the >>> drive capacity is > 1.5 Tb you probably should be. You will also be >>> ashift=9 as well. This may or may not be a problem for you. >> That was intentional, as I *thought* these drives were not 4k sector >> drives. I am not sure how I am supposed to tell. They are WD RE4 >> drives. >> I confess, however to knowing nothing about ashift=9..... Could you >> elaborate? > Read this thread: > > ZFS using 'advanced format drives' with FreeBSD (8.2-RC3) > http://forums.freebsd.org/showthread.php?t=21644 > > (and of course don't play around and run the dd command, etc. for disks > with valuable data on them) > And looking at dmesg or /var/log/messages should probably tell you what your sector size is. eg. # dmesg | grep "da2:" or # grep "da2:" /var/log/messages or # bunzip2 -c /var/log/messages.1.bz2 | grep "da2:" Nov 28 13:59:35 bcnas1 kernel: da2: Fixed Direct Access SCSI-6 device Nov 28 13:59:35 bcnas1 kernel: da2: 600.000MB/s transfers Nov 28 13:59:35 bcnas1 kernel: da2: Command Queueing enabled Nov 28 13:59:35 bcnas1 kernel: da2: 2861588MB (5860533168 *512 byte sectors*: 255H 63S/T 364801C) >> -D >> _______________________________________________ >> freebsd-fs@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-fs >> To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" > -- -------------------------------------------- Peter Maloney Brockmann Consult Max-Planck-Str. 2 21502 Geesthacht Germany Tel: +49 4152 889 300 Fax: +49 4152 889 333 E-mail: peter.maloney@brockmann-consult.de Internet: http://www.brockmann-consult.de --------------------------------------------