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Message-ID: <46B883BB.10909@gmail.com>
Date: Tue, 07 Aug 2007 23:37:47 +0900
From: Tejun Heo <htejun@gmail.com>
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To: Robert Hancock <hancockr@shaw.ca>
CC: Michael Sedkowski <sedmich@gmail.com>, "Rafael J. Wysocki" <rjw@sisk.pl>,
       Henrique de Moraes Holschuh <hmh@hmh.eng.br>,
       linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org,
       linux-acpi@vger.kernel.org, Thomas Renninger <trenn@suse.de>
Subject: Re: Disk spin down issue on shut down/suspend to disk
References: <fa.bsWpbo79BZgHoaIGhEMfTEBxs54@ifi.uio.no> <fa.mg6p0itaOQUo/t8deCaYpyqj6Nk@ifi.uio.no> <fa.RxWYL8z8KktgL8LGZ/cTB2nI1Yc@ifi.uio.no> <fa.AyyCtZ2yLjC5noHPHtmzn4ffhhE@ifi.uio.no> <fa.SuAjism+m0z0haqCRVjkc2S978o@ifi.uio.no> <fa.QgWcLG2hfRb92g4blN61qYfRjlQ@ifi.uio.no> <46B7AF53.1040307@shaw.ca> <46B8140E.3000509@gmail.com> <46B88173.3020302@shaw.ca>
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Robert Hancock wrote:
> Tejun Heo wrote:
>> Yeah, that seems to be what's going on.  I don't think we have any other
>> choice than blacklisting those notebooks.  This is a mess.  How does the
>> other OS cope with this?
> 
> Quite possible that it gets a double spindown with these laptop/drive
> combinations as well. I don't think it's particularly harmful as long as
> there's no emergency unload..

I heard that spinning a harddrive back up while the platter is still
spinning from the previous spindown can have pretty bad affect on the
harddisk.  This is from a Samsung HDD service guy and I'm not sure how
credible it is at all.

Thanks.

-- 
tejun
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