From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Lord Subject: Re: WDC WD15EARS-00Z5B1: harddrive which does crazy unloading Date: Tue, 09 Mar 2010 09:40:39 -0500 Message-ID: <4B965DE7.7000109@teksavvy.com> References: <201002081933.10144.suse-linux@ml082.pinguin.uni.cc> <4B96013F.1050904@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from ironport2-out.teksavvy.com ([206.248.154.183]:35496 "EHLO ironport2-out.pppoe.ca" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752090Ab0CIOky (ORCPT ); Tue, 9 Mar 2010 09:40:54 -0500 In-Reply-To: <4B96013F.1050904@kernel.org> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: Al Bogner , linux-ide@vger.kernel.org On 03/09/10 03:05, Tejun Heo wrote: > Hello, > > Sorry about very late reply. > > On 02/09/2010 03:33 AM, Al Bogner wrote: >> I append info of an 1.5 TB WD Caviar green drive with a lot of start/stop >> cycles. I would like to mention, that I have 4 1 TB Caviar green (WD10EADS) >> which work fine! >> >> The e-SATA drive is used with this machine: >> http://www.smolts.org/client/show/pub_b214fce2-b5b5-4a32-ba7e-cf9de6d55757 >> but has problems with other machines too. >> >> I use Openesuse 11.1 >> Kernel 2.6.27.42-0.1-default >> FANTEC Fanbox FB-35US2 (probably JMicron 20360/20363 AHCI Controller) >> storage-fixup-0.2-25.3 is installed, but not especially configured >> >> If you need more info let me know. > > How fast does it increase? ie. counts / hour. .. The default on these drives is to unload heads after a mere eight (8) seconds of inactivity. Ugh. The wdidle3-1.03 DOS tool can fix that. Google it. I have disassembled that tool here, and found a few vendor-unique commands inside it. But thus far have not managed to get them working natively in Linux. I really need a SATA tracer/analyser.. -ml