From owner-freebsd-stable@FreeBSD.ORG Mon Apr 4 14:03:34 2011 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 870A9106564A for ; Mon, 4 Apr 2011 14:03:34 +0000 (UTC) (envelope-from gerrit@pmp.uni-hannover.de) Received: from mrelay1.uni-hannover.de (mrelay1.uni-hannover.de [130.75.2.106]) by mx1.freebsd.org (Postfix) with ESMTP id 185ED8FC08 for ; Mon, 4 Apr 2011 14:03:33 +0000 (UTC) Received: from www.pmp.uni-hannover.de (www.pmp.uni-hannover.de [130.75.117.2]) by mrelay1.uni-hannover.de (8.14.4/8.14.4) with ESMTP id p34E3EW2019852; Mon, 4 Apr 2011 16:03:17 +0200 Received: from pmp.uni-hannover.de (unknown [130.75.117.3]) by www.pmp.uni-hannover.de (Postfix) with SMTP id DD20010A; Mon, 4 Apr 2011 16:03:14 +0200 (CEST) Date: Mon, 4 Apr 2011 16:03:14 +0200 From: Gerrit =?ISO-8859-1?Q?K=FChn?= To: Bruce Cran Message-Id: <20110404160314.aef3ca92.gerrit@pmp.uni-hannover.de> In-Reply-To: <20110404143625.00002eb1@unknown> References: <20110404150701.c5c050ff.gerrit@pmp.uni-hannover.de> <20110404143625.00002eb1@unknown> Organization: Albert-Einstein-Institut (MPI =?ISO-8859-1?Q?f=FCr?= Gravitationsphysik & IGP =?ISO-8859-1?Q?Universit=E4t?= Hannover) X-Mailer: Sylpheed 3.0.3 (GTK+ 2.20.1; amd64-portbld-freebsd8.1) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-PMX-Version: 5.5.9.395186, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2011.4.4.135425 Cc: freebsd-stable@freebsd.org Subject: Re: drives >2TB on mpt device X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: gerrit.kuehn@aei.mpg.de List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Apr 2011 14:03:34 -0000 On Mon, 4 Apr 2011 14:36:25 +0100 Bruce Cran wrote about Re: drives >2TB on mpt device: Hi Bruce, BC> It looks like a known issue: BC> http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/147572 Hm, I don't know if this is exactly what I'm seeing here (although the cause may be the same): I do not use mptutil. The controller is "dumb" (without actual raid processor), and I intend to use it with zfs. However, I cannot even get gpart to create a partition larger than 2TB, because mpt comes back with only 2TB after probing the drive. As this is a problem that already exists with 1 drive, I cannot use gstripe or zfs to get around this. But the PR above states that this limitation is already built into mpt, so my only chance is probably to try a different controller/driver (any suggestions for a cheap 8port controller to use with zfs?), or to wait until mpt is updated to support larger drives. Does anyone know if there is already ongoing effort to do this? cu Gerrit