From owner-freebsd-stable@FreeBSD.ORG Tue Jan 26 04:40:49 2010 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 E012B106566B for ; Tue, 26 Jan 2010 04:40:48 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from qmta08.emeryville.ca.mail.comcast.net (qmta08.emeryville.ca.mail.comcast.net [76.96.30.80]) by mx1.freebsd.org (Postfix) with ESMTP id 9A8DD8FC16 for ; Tue, 26 Jan 2010 04:40:46 +0000 (UTC) Received: from omta13.emeryville.ca.mail.comcast.net ([76.96.30.52]) by qmta08.emeryville.ca.mail.comcast.net with comcast id a2bt1d00317UAYkA84gmVE; Tue, 26 Jan 2010 04:40:46 +0000 Received: from koitsu.dyndns.org ([98.248.46.159]) by omta13.emeryville.ca.mail.comcast.net with comcast id a4gj1d0023S48mS8Z4gjVZ; Tue, 26 Jan 2010 04:40:44 +0000 Received: by icarus.home.lan (Postfix, from userid 1000) id 024791E3033; Mon, 25 Jan 2010 20:40:42 -0800 (PST) Date: Mon, 25 Jan 2010 20:40:41 -0800 From: Jeremy Chadwick To: freebsd-stable@freebsd.org Message-ID: <20100126044041.GA33624@icarus.home.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-06-14) Subject: Looking for testers: atacontrol SMART support 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: Tue, 26 Jan 2010 04:40:49 -0000 As mentioned a while back on the list[1], I worked on getting atacontrol to spit out SMART statistics for ATA disks. Specifically, this would be those using the standard ata(4) layer (including ataahci.ko and similar), but not ahci(4) (ahci.ko), which uses ATA/CAM. Output resembles the following: ID# Attribute Name Curr Worst Thrsh Bytes --- ------------------------- ----- ----- ----- ----------------- 1 Raw Read Error Rate 200 200 51 00 00 00 00 00 00 3 Spin Up Time 234 229 21 53 20 00 00 00 00 4 Start/Stop Count 100 100 0 11 00 00 00 00 00 5 Reallocated Sector Count 200 200 140 00 00 00 00 00 00 7 Seek Error Rate 200 200 0 00 00 00 00 00 00 9 Power On Hours Count 95 95 0 9b 0f 00 00 00 00 10 Spin Retry Count 100 253 0 00 00 00 00 00 00 11 Calibration Retry Count 100 253 0 00 00 00 00 00 00 12 Power Cycle Count 100 100 0 0c 00 00 00 00 00 192 Power Off Retract Count 200 200 0 0b 00 00 00 00 00 193 Load Cycle Count 200 200 0 11 00 00 00 00 00 194 Temperature 116 113 0 22 00 00 00 00 00 196 Reallocated Event Count 200 200 0 00 00 00 00 00 00 197 Current Pending Sectors 200 200 0 00 00 00 00 00 00 198 * Uncorrected Sector Count 200 200 0 00 00 00 00 00 00 199 UltraDMA CRC Error Count 200 200 0 00 00 00 00 00 00 200 * Write Error Rate 200 200 0 00 00 00 00 00 00 --- ------------------------- ----- ----- ----- ----------------- * = values only updated after a short/long/offline test Things to note: - I've only been testing on RELENG_8 amd64. The code should work on i386, but if something explodes, let me know. I don't recommend patching RELENG_7 or even a RELEASE tag with this. - I did my best to document the SMART "stuff" throughout the source. Much to my disappointment SMART attributes are not part of the ATA or ACS specification; they're mentioned, but attributes and their interpretation are 100% vendor specific. Decoding them will involve examining the smartmontools source, which takes time. This is why there is no smartmontools "RAW_VALUE" equivalent -- the code for that piece simply hasn't been written. Instead, I display the raw bytes associated with each attribute. This should help with debugging (for the time being). I'll work things out... :-) - I've only tested this with WD2000JD and WD1001FALS disks. Those with Seagate, Maxtor, Hitachi/IBM, Fujitsu, Samsung, and others will probably find many of their attributes names appear as "". See below for how you can help improve this situation. - All operations done are read-only (in fact the device is opened in read-only mode). There may be plans down the road to implement things like inducing SMART short/long/offline tests, but for now I want to get attribute support in there. - All of the code was written by hand; that is to say, there is no code copied/stolen from smartmontools, as it's released under the GPL. I'll be putting diffs/patches up at my site[2] as I work on improvements. I won't be maintaining a CHANGES log for now, unless people really want me to keep one. Methodology I use to test: $ cd /some/other/place $ cp -pR /usr/src/sbin/atacontrol . $ patch -p0 < atacontrol-smart-20100125_01.diff $ cd atacontrol $ make $ ./atacontrol smart Let me know if you're interested in helping improve this, and/or if this feature is at all worth being imported into the standard atacontrol(8) utility. For those wanting to help extend the SMART attribute ID-to-name mapping, this is quite easy: install smartmontools and send me the output from "smartctl -a /dev/adXX". I can work out the rest. Thanks. [1]: http://lists.freebsd.org/pipermail/freebsd-stable/2009-December/053464.html [2]: http://jdc.parodius.com/freebsd/atacontrol/ -- | 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 |