From: Mark Lord <kernel@teksavvy.com>
To: Tejun Heo <tj@kernel.org>
Cc: Al Bogner <suse-linux@ml082.pinguin.uni.cc>, linux-ide@vger.kernel.org
Subject: Re: WDC WD15EARS-00Z5B1: harddrive which does crazy unloading
Date: Sun, 14 Mar 2010 11:57:38 -0400 [thread overview]
Message-ID: <4B9D0772.4080306@teksavvy.com> (raw)
In-Reply-To: <4B9881C8.10506@kernel.org>
On 03/11/10 00:38, Tejun Heo wrote:
>
>> 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..
>
> Hmmm... so they don't respond to ATA APM command?
..
No. The vendor-unique commands appear to download a small firmware
packet to the drive, which reprograms it for a longer "IDLE-3" timeout.
"IDLE-3" is what WD call this vendor-specific "powersaving" mode,
and it is not intended to be adjustable. Except via that little
DOS utility hack, and even WD no longer make that available.
But I found it by googling for it, and it can change the timeout
up to 30 seconds from the default of 8. So I set my WD 1.5TB drive
to use 30, and things are now acceptable.
Ugh (again)!
next prev parent reply other threads:[~2010-03-14 15:57 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-08 18:33 WDC WD15EARS-00Z5B1: harddrive which does crazy unloading Al Bogner
2010-03-09 8:05 ` Tejun Heo
2010-03-09 8:13 ` Mikael Abrahamsson
2010-03-09 10:34 ` Al Bogner
2010-03-09 14:40 ` Mark Lord
2010-03-11 5:38 ` Tejun Heo
2010-03-11 5:53 ` Tejun Heo
2010-03-11 19:10 ` Justin Maggard
2010-03-14 15:57 ` Mark Lord [this message]
2010-03-15 0:02 ` Tejun Heo
2010-03-18 16:15 ` Al Bogner
2010-03-18 18:36 ` Justin Maggard
2010-03-19 2:26 ` Tejun Heo
2010-03-19 2:27 ` Tejun Heo
2010-03-23 1:34 ` Mark Lord
[not found] ` <4BA82A2F.7010607@hardwarefreak.com>
2010-03-23 2:44 ` Stan Hoeppner
2010-04-29 11:00 ` Bjørn Mork
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4B9D0772.4080306@teksavvy.com \
--to=kernel@teksavvy.com \
--cc=linux-ide@vger.kernel.org \
--cc=suse-linux@ml082.pinguin.uni.cc \
--cc=tj@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).