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Date: Fri, 22 Mar 2002 15:15:21 +0000 (GMT)
From: Bernd Schmidt <bernds@redhat.com>
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To: Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>
cc: Andre Hedrick <andre@linux-ide.org>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
        Chris Friesen <cfriesen@nortelnetworks.com>,
        <linux-kernel@vger.kernel.org>
Subject: Re: last write to drive issued with write cache off?
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On Fri, 22 Mar 2002, Denis Vlasenko wrote:

> Re spindown: I don't see a reason why spindown via IDE 'sleep' command
> should sound differently from spindown due to poweroff.
> 
> So it is interesting to understand why Bernd's system started to emit
> 'funny noises'.
> 
> Maybe shutdown script does not realize that drives are spun down and cause 
> disk accesses which lead to spinup? That will be
> 
> normal -> spin down -> spin up -> poweroff and spindown
> 
> and indeed may sound funny :-)

I think the explanation may be that the drives are not spun down at the
same time, but with a one or two second delay, making it sound different
than usual.


Bernd

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