From owner-freebsd-current@FreeBSD.ORG Wed Sep 7 15:03:20 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 713F51065670 for ; Wed, 7 Sep 2011 15:03:20 +0000 (UTC) (envelope-from tjg@soe.ucsc.edu) Received: from mail-01.cse.ucsc.edu (mail-01.cse.ucsc.edu [128.114.48.32]) by mx1.freebsd.org (Postfix) with ESMTP id 5F3408FC19 for ; Wed, 7 Sep 2011 15:03:20 +0000 (UTC) Received: from mail-01.cse.ucsc.edu (mail-01.cse.ucsc.edu [128.114.48.32]) by mail-01.cse.ucsc.edu (Postfix) with ESMTP id 06ABE1009B5F; Wed, 7 Sep 2011 08:03:20 -0700 (PDT) Date: Wed, 7 Sep 2011 08:03:19 -0700 (PDT) From: Tim Gustafson To: Matt Thyer Message-ID: <815930668.115706.1315407799946.JavaMail.root@mail-01.cse.ucsc.edu> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [128.114.49.22] X-Mailer: Zimbra 6.0.9_GA_2686 (ZimbraWebClient - FF3.0 ([unknown])/6.0.9_GA_2686) Cc: freebsd-current@freebsd.org Subject: Re: RELENG_8 / mpt / zpool Errors X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Sep 2011 15:03:20 -0000 > Advice is: > > Use -STABLE and not -RELEASE > Upgrade firmware > Avoid port multipliers > > As I'm using cheap 4K green drives I had to use wdidle3.exe to fix > the 8 second head parking and I also had to use gnop to force my > ZFS pool to use 4K transfers. We're already using -STABLE; we update to RELENG_8 periodically. LSI's web site is a little bizarre when it comes to their downloads section. I searched their drivers section for my specific model number and got a bunch of firmware upgrades for other cards with different port configurations. We can't avoid port multipliers. Nobody makes a 32-port SAS/SATA controller. And anyhow, the hardware is already purchased so I need to figure out how to make it work. :) WDC's web site says that the wdidle3.exe utility you suggested is not for this drive; the site says it's only for WD1000FYPS-01ZKB0, WD7500AYPS-01ZKB0, and WD7501AYPS-01ZKB0. I'm not sure what you mean about using gnop to force 4K transfers. > The mps driver has problems with the LSI SAS2008 when using port > multipliers (which are in the enclosures). If you go to the previous > SAS 3G version of that chip I think you'll be OK. When you say "go to the previous SAS 3G version of that chip", do you mean "buy an older version of that controller card"? Or are you talking about downgrading, rather than upgrading, the firmware? There are newer LSI cards out there as well. Would upgrading the card help any? The LSI SAS 9205-8e seems to be a workable solution, and not too expensive. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Tim Gustafson tjg@soe.ucsc.edu Baskin School of Engineering 831-459-5354 UC Santa Cruz Baskin Engineering 317B -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-