linux-kernel - Re: Loud "pop" coming from hard drive on reboot

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Date:	Wed, 18 Apr 2007 16:58:17 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	Stephen.Clark@...lark.us,
	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: Loud "pop" coming from hard drive on reboot

Stephen Clark wrote:
> So this is the pop I hear on my new laptop that is using 
> libata=combined_mode
> when I shut my system down. I didn't get the pop with the same disk 
> drive in an older
> laptop that was only ide. It sounds like a relay closing or opening, but 
> is really my
> drive head doing an emergency retract/park?

Yes, that would be what it is, and why.

I would vote that the sd stop-on-shutdown patch should go in, and 
possibly with the new behavior enabled by default. Surely the number of 
people running Linux on a laptop (or any other system with load/unload 
head technology drives) is much greater than the number of people 
running a SAN, multi-initiator, etc. environment where you might not 
want this..

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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