lkml.org 
[lkml]   [2008]   [Apr]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Western Digital GreenPower drives and Linux

On Thursday 2008-04-10 17:01, Christian Pernegger wrote:
>
>> Those fancy new WD GreenPower drives seem to be heavily suffering from the
>> rapidly increasing head load/unload problem. [...] I got one of them
>> (WD5000AACS) recently and to my horror [...]
>
>> [...] With it the unload feature can be either disabled or timer set from
>> 100ms to 25.5 seconds. But obviously I can't try it...
>
>Why? Using a DOS boot disk once would not be that bad as a workaround,
>would it?

This DOS nonsense does not work anywhere outside x86.
I see people put *lots* of afterthought in their utilities, hardware even.

WD is not the first to do this unload nonsense, I've noticed it with
Toshiba before: http://lkml.org/lkml/2006/11/15/413 Since then, I am
dependent on the thkd[1] module and no hdparm is going to fix it; the
module does a dumb read every now and then on one device, causing
streaming performance to kink periodically, but it works at least at
keeping the disk alive. (Reason it's in kernel: better to have even when
userspace is not running.) Improvements welcome.



[1] ftp://ftp5.gwdg.de/pub/linux/misc/suser-jengelh/rawkernel/
somewhere in there since recently.


\
 
 \ /
  Last update: 2008-04-12 19:13    [W:0.139 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site