linux-kernel - Re: 2.6.22-rc2 and libata/shutdown

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Date:	Thu, 24 May 2007 17:33:30 -0400
From:	Mark Lord <lkml@....ca>
To:	Fabio A Correa <facorread@...il.com>
Cc:	Damien Wyart <damien.wyart@...e.fr>, linux-kernel@...r.kernel.org
Subject: Re: 2.6.22-rc2 and libata/shutdown

Fabio A Correa wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Hello Damien, people...
> 
> Damien Wyart wrote:
>> Hello,
>>
>> After trying 2.6.22-rc2, I noticed the warning message from libata about
>> upgrading shutdown(8). First, I have two SATA disks, and get the warning for
>> only one of them. Second, I double-checked the source of shutdown for my
>> distro (Debian unstable), and do not see anything related to issueing
>> STANDBYNOW.
> 
> The warning is pretty important, and you can check it at
> 
> http://linux-ata.org/shutdown.html
> 
> I have been checking the sysvinit sources and I cannot see the portions on scanning SCSI or SATA
> disks. I only see the IDE scanning and standby-related code at src/hddown.c. Does anybody know
> how in the world are the SATA disks put to sleep in userspace?

Well, *if* they are being put to sleep, then this is almost certainly
being done with a call to "hdparm -y" or "hdparm -Y".

Yes, hdparm works just fine with SATA drives too.

Cheers
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