From owner-freebsd-fs@FreeBSD.ORG Thu Aug 7 18:47:51 2008 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 5ABFE106567F for ; Thu, 7 Aug 2008 18:47:51 +0000 (UTC) (envelope-from mcdouga9@egr.msu.edu) Received: from mx.egr.msu.edu (surfnturf.egr.msu.edu [35.9.37.164]) by mx1.freebsd.org (Postfix) with ESMTP id 2CF098FC12 for ; Thu, 7 Aug 2008 18:47:51 +0000 (UTC) (envelope-from mcdouga9@egr.msu.edu) Received: from localhost (localhost [127.0.0.1]) by mx.egr.msu.edu (Postfix) with ESMTP id A72E471F08A; Thu, 7 Aug 2008 14:47:50 -0400 (EDT) X-Virus-Scanned: amavisd-new at egr.msu.edu Received: from mx.egr.msu.edu ([127.0.0.1]) by localhost (surfnturf.egr.msu.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id b+eGJT0eOxqt; Thu, 7 Aug 2008 14:47:50 -0400 (EDT) Received: from [35.9.44.65] (daemon.egr.msu.edu [35.9.44.65]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: mcdouga9) by mx.egr.msu.edu (Postfix) with ESMTPSA id 843FA71EDA3; Thu, 7 Aug 2008 14:47:50 -0400 (EDT) Message-ID: <489B4356.8060702@egr.msu.edu> Date: Thu, 07 Aug 2008 14:47:50 -0400 From: Adam McDougall User-Agent: Thunderbird 2.0.0.16 (X11/20080727) MIME-Version: 1.0 To: Wes Morgan References: <18585.3903.895425.122613@almost.alerce.com> <200808061928.37001.peter.schuller@infidyne.com> <489A2E1F.6000405@egr.msu.edu> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org Subject: Re: ZFS Advice 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: Thu, 07 Aug 2008 18:47:51 -0000 Wes Morgan wrote: > On Wed, 6 Aug 2008, Adam McDougall wrote: > >> Wes Morgan wrote: >>> >>> http://www.lsi.com/storage_home/products_home/standard_product_ics/sas_ics/lsisas1068e/index.html >>> >>> Not much onboard ram, but it's PCI-E and even SAS. CDW lists it for >>> $155. That would be cheaper than buying a new board with a PCI-X >>> slot or two, and would even handle SAS drives. Claims to be based on >>> the "LSISAS 1068E SAS controller". Any idea if that is supported? I >>> don't see it listed in the mfi man page. LSI has a Linux driver for >>> download. That card looks like it would be just what I need. >>> _______________________________________________ >>> >> mpt2@pci0:8:0:0: class=0x010000 card=0x31501000 >> chip=0x00581000 rev=0x04 hdr=0x00 >> vendor = 'LSI Logic (Was: Symbios Logic, NCR)' >> device = 'SAS 3000 series, 8-port with 1068E -StorPort' >> class = mass storage >> subclass = SCSI >> mpt2: port 0xa800-0xa8ff mem >> 0xfcbfc000-0xfcbfffff,0xfcbe0000-0xfcbeffff irq 17 at device 0.0 on pci8 >> >> da1 at mpt2 bus 0 target 0 lun 0 >> da1: Fixed Direct Access SCSI-5 device >> da1: 300.000MB/s transfers >> da1: Command Queueing Enabled >> da1: 140009MB (286739329 512 byte sectors: 255H 63S/T 17848C) >> > > Excellent! How is your experience with the performance and reliability > of the card? > The system is in production right now with a smallish amount of load, so the quick test I did to see 85MB/sec write to a raidz1 and 60M/sec read is probably a bit unfair. Each set of 4 disks is attached to a SAS expander which is attached to the card internally in a sun x4150. I didn't try to tune it for performance before I started using that volume for storage in a manner where size and realiability were more important than speed. But on a whole it seems reliable. I won't have any time soon to get it into a better state for testing, but I may test the new ZFS patches on it before that. I've been pretty happy with all other MPT family chips so I would doubt it has any crippling speed problems.