From owner-freebsd-stable@FreeBSD.ORG Fri Mar 30 21:53:02 2012 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 B289B1065672 for ; Fri, 30 Mar 2012 21:53:02 +0000 (UTC) (envelope-from janm@transactionware.com) Received: from midgard.transactionware.com (mail2.transactionware.com [203.14.245.36]) by mx1.freebsd.org (Postfix) with SMTP id 0A38C8FC22 for ; Fri, 30 Mar 2012 21:53:01 +0000 (UTC) Received: (qmail 17713 invoked by uid 907); 30 Mar 2012 21:52:58 -0000 Received: from eth222.nsw.adsl.internode.on.net (HELO [192.168.1.100]) (150.101.196.221) (smtp-auth username janm, mechanism plain) by midgard.transactionware.com (qpsmtpd/0.84) with (AES128-SHA encrypted) ESMTPSA; Sat, 31 Mar 2012 08:52:58 +1100 Mime-Version: 1.0 (Apple Message framework v1257) Content-Type: text/plain; charset=us-ascii From: Jan Mikkelsen In-Reply-To: <201203301414.q2UEEiNb078707@ambrisko.com> Date: Sat, 31 Mar 2012 08:53:18 +1100 Content-Transfer-Encoding: quoted-printable Message-Id: <7B722CC7-6D84-48A5-811A-4616191ECC96@transactionware.com> References: <201203301414.q2UEEiNb078707@ambrisko.com> To: Doug Ambrisko X-Mailer: Apple Mail (2.1257) Cc: freebsd-stable@freebsd.org, John Baldwin Subject: Re: LSI MegaRAID SAS 9240 with mfi driver? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Mar 2012 21:53:02 -0000 Hi, On 31/03/2012, at 1:14 AM, Doug Ambrisko wrote: > John Baldwin writes: > | On Friday, March 30, 2012 12:06:40 am Jan Mikkelsen wrote: > | ... > | > Is this path likely to work out? Any suggestions on where to go = from here? > |=20 > | You should try the updated mfi(4) driver that Doug (cc'd) is going = to soon > | merge into HEAD. It syncs up with the mfi(4) driver on LSI's = website which > | supports several cards that the current mfi(4) driver does not. = (I'm not > | fully sure if the 9240 is in that group or not. Doug might know = however.) >=20 > Yes, this card is supported with the mfi(4) in projects/head_mfi. = Looks > like we fixed a couple of last minute found bugs when trying to create = a > RAID wth mfiutil. This should be fixed now. I'm going to start the > merge to -current today. The version in head_mfi can run on older > versions of FreeBSD with the changes that Sean did. >=20 > Note that I wouldn't recomend the 9240 since it can't have a battery > option. NVRAM is the key to the speed of mfi(4) cards. However, that > won't stop us from supporting=20 Thanks. I don't know what changes Sean did. Are they in 9.0-release, or do I = need -stable after a certain point? I'm assuming I should be able to = take src/sys/dev/mfi/... and src/usr.sbin/mfiutil/... from -current. The performance is an interesting thing. The write performance I care = about is ZFS raidz2 with 6 x JBOD disks (or 6 x single disk raid0) on = this controller. The 9261 with a BBU performs well but obviously costs = more. I can see the BBU being important for controller based raid5, but I'm = hoping that ZFS with JBOD will still perform well. I'm ignorant at this = point, so that's why I'm trying it out. Do you have any experience or = expectations with a 9240 being used in a setup like that? Regards, Jan.