From owner-freebsd-stable@FreeBSD.ORG Fri Mar 25 21:50:34 2011 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 D596E106566C for ; Fri, 25 Mar 2011 21:50:34 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from qmta13.emeryville.ca.mail.comcast.net (qmta13.emeryville.ca.mail.comcast.net [76.96.27.243]) by mx1.freebsd.org (Postfix) with ESMTP id B83FB8FC13 for ; Fri, 25 Mar 2011 21:50:34 +0000 (UTC) Received: from omta14.emeryville.ca.mail.comcast.net ([76.96.30.60]) by qmta13.emeryville.ca.mail.comcast.net with comcast id PZS01g0031HpZEsADZqaPn; Fri, 25 Mar 2011 21:50:34 +0000 Received: from koitsu.dyndns.org ([67.180.84.87]) by omta14.emeryville.ca.mail.comcast.net with comcast id PZqY1g0041t3BNj8aZqZWf; Fri, 25 Mar 2011 21:50:34 +0000 Received: by icarus.home.lan (Postfix, from userid 1000) id 01A0C9B429; Fri, 25 Mar 2011 14:50:32 -0700 (PDT) Date: Fri, 25 Mar 2011 14:50:31 -0700 From: Jeremy Chadwick To: Steven Hartland Message-ID: <20110325215031.GA36689@icarus.home.lan> References: <20100719023419.GA91006@icarus.home.lan> <201007190301.o6J31Hs1045607@lava.sentex.ca> <20100719033424.GA92607@icarus.home.lan> <201007191237.o6JCbmj7049339@lava.sentex.ca> <20100719203320.GB21088@icarus.home.lan> <011E0838F0EC4E80885646C70B34F8AB@multiplay.co.uk> <4D8C9495.90103@sentex.net> <716F58E43EA845E3A2228F020D85DFBB@multiplay.co.uk> <20110325144124.GA29033@icarus.home.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Cc: freebsd-stable@freebsd.org Subject: Re: deadlock or bad disk ? RELENG_8 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, 25 Mar 2011 21:50:34 -0000 On Fri, Mar 25, 2011 at 03:37:55PM -0000, Steven Hartland wrote: > ----- Original Message ----- From: "Jeremy Chadwick" > > > >I apologise in advance if I have already reviewed your situation, but if > >you could please provide full "smartctl -a" output for the disk, I can > >review the data to see if anything looks out of place. > > > >An example: on some (not all) Western Digital "Green" disks, including > >enterprise models, Attribute 193 showing an extremely large RAW_VALUE > >(in the tens of thousands, if not more) indicates the drive is trying to > >park its actuator arm/heads constantly. The result: abysmal > >performance. One cannot key off of the firmware version as an indicator > >(WD does not always increase/change the firmware string). Some users > >have been able to get WD to admit the problem + provide them a fixed > >firmware. > > > >My point: looking at SMART attributes doesn't help unless you know > >exactly what to look for, are familiar with all the quirks of drive > >models, and basically act as an information sponge (subscribe to all > >sorts of mailing lists, talk to users, help generic non-technical > >end users out, etc.). It takes up a lot of my time, but I try my best. > >Sometimes I feel like my brain needs checksumming... > > Thanks for the offer Jeremy unfortunately I'm in the same position Mike > was as these disks are behind an areca which doesn't show raw values :( > > I've raised this with their support as an issue with their areca-cli > utility so hopefully they will fix. Alternatively maybe smartctl > will > add support for the areca under freebsd in the future. Bummer. Competitor's drivers make use of pass(4) and/or xpt(4), the result being that you can see (and talk to directly) all the disks which are on the RAID card. No need for a CLI utility getting in the way, etc.. It would benefit Areca if they added support for this to their driver. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP 4BD6C0CB |