From owner-freebsd-scsi@FreeBSD.ORG Fri Sep 19 01:57:16 2003 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C9DE516A4B3 for ; Fri, 19 Sep 2003 01:57:16 -0700 (PDT) Received: from mail.webjockey.net (mail.webjockey.net [208.141.46.3]) by mx1.FreeBSD.org (Postfix) with ESMTP id C620843FAF for ; Fri, 19 Sep 2003 01:57:15 -0700 (PDT) (envelope-from gary@outloud.org) Received: from nebula-evojtguv.outloud.org (wv-mrtnbrg-cmts1a-a-210.shphwv.adelphia.net [68.67.224.210]) by mail.webjockey.net (8.12.9/8.12.8) with ESMTP id h8J8vZ3D077741; Fri, 19 Sep 2003 04:57:43 -0400 (EDT) (envelope-from gary@outloud.org) Message-Id: <6.0.0.14.0.20030919045155.0357ab10@localhost> X-Sender: ancient/208.141.46.254@localhost X-Mailer: QUALCOMM Windows Eudora Version 6.0.0.14 (Beta) Date: Fri, 19 Sep 2003 04:57:00 -0400 To: Andrew Snow From: Gary Stanley In-Reply-To: <3F690CB5.6000001@kanji.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed cc: freebsd-scsi@freebsd.org Subject: Re: adaptec 2120S report X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Sep 2003 08:57:16 -0000 At 09:39 PM 9/17/2003, you wrote: >After my failure to get the Serveraid-5i working, I have put in an Adaptec >2120S. This card has very similar features to the Serveraid card, with the >addition that it actually works in FreeBSD. > >After a couple of days of testing I can recommend this card. I have >6x36GB IBM 10krpm drives running in RAID 50 configuration with FreeBSD >5.1-REL. The only downside was I cannot get it working at Ultra-320 with >this IBM x345 hotswap backplane, but it is working great at Ultra-160. > >With my configuration, a quick test of file system sequential access speed >shows reads at 47mb/s and writes at 27mb/s. The good news is, while the >array is degraded and rebuilding, read is 10mb/s and write is 6mb/s which >is still quite respectable. The box still feels fast enough while the >array is rebuilding. The downside is rebuilding the RAID5 containers took >5 hours - each. > >Two problems with this controller in FreeBSD 5.1: > >1. FreeBSD won't boot while the array is rebuilding. It hangs after >detecting aacd0. I did not try waiting 5 hours to see if it continued >after the array rebuild finished. >Workaround is to only hot swap drives while FreeBSD is running, and do not >reboot until rebuild is finished. Alternatively, boot into the controller >BIOS and wait for rebuild to finish there. > >2. I could not get SMP kernel to work - its a Xeon 2.6ghz supporting >hyperthreading. SMP worked without the controller, but hangs during boot >with the controller. Luckily this is not a big problem for us as we only >need a single CPU and hyperthreading is of minor/dubious advantage. >Workaround is to simply not use an SMP kernel. > >Other than that, it seems to be working very nicely. I look forward to >seeing the Serveraid / ips driver issues resolved in 5.2... > The issues you are having are something similar to what I experience. When installing FreeBSD 4.x/5.2 onto a building array, the machine panic's and then the background initialization restarts. (Building a 500GB RAID5 array takes me 12 hours, lol) Issues #2 is something I'm not familiar with on 5, but with 4 I am using a 2120S with SMP (Not hyperthreading)