From owner-freebsd-questions Sat Mar 22 11:17:17 2003 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C131437B401; Sat, 22 Mar 2003 11:17:15 -0800 (PST) Received: from ecserv7.uwaterloo.ca (ecserv7.uwaterloo.ca [129.97.50.127]) by mx1.FreeBSD.org (Postfix) with ESMTP id BE76243F75; Sat, 22 Mar 2003 11:17:14 -0800 (PST) (envelope-from bruce@engmail.uwaterloo.ca) Received: from ecserv7.uwaterloo.ca (localhost.uwaterloo.ca [127.0.0.1]) by ecserv7.uwaterloo.ca (8.12.6/8.12.6) with ESMTP id h2MJHDpc054008; Sat, 22 Mar 2003 14:17:13 -0500 (EST) (envelope-from bruce@engmail.uwaterloo.ca) Received: (from www@localhost) by ecserv7.uwaterloo.ca (8.12.6/8.12.6/Submit) id h2MJHD7v054007; Sat, 22 Mar 2003 14:17:13 -0500 (EST) X-Authentication-Warning: ecserv7.uwaterloo.ca: www set sender to bruce@engmail.uwaterloo.ca using -f Received: from 65.93.97.169 ( [65.93.97.169]) as user bruce@engmail.uwaterloo.ca by www.nexusmail.uwaterloo.ca with HTTP; Sat, 22 Mar 2003 14:17:13 -0500 Message-ID: <1048360633.3e7cb6b92be8a@www.nexusmail.uwaterloo.ca> Date: Sat, 22 Mar 2003 14:17:13 -0500 From: Bruce Campbell To: MikeM Cc: freebsd-hardware@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG Subject: Re: problem on 1TB filesystem RAID 5 3ware References: <200303211911260025.003E1BB2@sentry.24cl.com> In-Reply-To: <200303211911260025.003E1BB2@sentry.24cl.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit User-Agent: Internet Messaging Program (IMP) 3.1 / FreeBSD-4.6.2 X-Originating-IP: 65.93.97.169 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Some more test results: 22 Mar 2003 - test with RAID 5 with 4 * WD 200GB with Write Cache disabled *succeeded*. Write Cache can be disabled through the 3ware BIOS, or the 3ware web management tool. Raw write performance to the array dropped from 30000KBytes/Second to 4500KBytes/Second, however this did not impact the test significantly, as the test involved copying data via an NFS mount on a 100 MBit/second network. The effective speed of the NFS copy dropped from around 5000 KBytes/Second to about 4500 KBytes/Second with Write Cache disabled. Thread here: http://oss.sgi.com/projects/xfs/mail_archive/200211/msg00056.html suggests firmware/driver mismatches can cause trouble, and someone else who had trouble found turning off write cache fixed it. All my info on this problem being kept here: http://www.freebsd.uwaterloo.ca/twiki/bin/view/Freebsd/BackupServerProblem Quoting MikeM : > Jim King wrote: > > >Which tells me that all of the work in the last year has been > >maintenance related to changes within FreeBSD itself, and not any > >updates for 3Ware functionality, e.g no support for firmware 7.5.x > >on the 7000 series controllers, and no support for the 8000 series > >controllers. > > > If the above is true, perhaps the hardware guide should be modified. It > currently says that the 3Ware 7000 series is supported. > > I, for one, purchased a 3Ware controller for my FreeBSD server based upon > the misleading hardware guide. > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hardware" in the body of the message > -- Bruce Campbell Engineering Computing CPH-2374B University of Waterloo (519)888-4567 ext 5889 ---------------------------------------- This mail sent through www.mywaterloo.ca To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message