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From: "Pádraig Brady" <P@draigBrady.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-pm@lists.linux-foundation.org
Subject: Re: [RFC] Disable disk spinup during system resume
Date: Fri, 22 Jul 2011 10:04:32 +0100	[thread overview]
Message-ID: <4E293D20.3080403@draigBrady.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1107211244550.3132-100000@iolanthe.rowland.org>

On 21/07/11 17:49, Alan Stern wrote:
> On Thu, 21 Jul 2011, Pádraig Brady wrote:
> 
>> On 21/07/11 15:49, Alan Stern wrote:
>>> On Thu, 21 Jul 2011, Pádraig Brady wrote:
>>>
>>>> Hi,
>>>>
>>>> I have a secondary sata disk (sda)  in my system that
>>>> I would like not to spinup on resume.
>>
>>

> What happens if you kill all the running processes (or as many as 
> possible) before starting the suspend?
> 
> Also, how do you initiate the suspend?  Do you use a program, or do you 
> simply "echo mem >/sys/power/state"?

I just rebooted with init=/bin/sh and did

sdparm -r -C STOP /dev/sda
echo 0 > /sys/block/sda/device/scsi_disk/*/manage_start_stop
echo mem > /sys/power/state

When I hit the power button to resume
sda started spinning again :(
There kernel logs about sata ports starting up.
Maybe I need to put the drive into a different
sleep state or something to stop it starting.

cheers,
Pádraig.
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  reply	other threads:[~2011-07-22  9:04 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-20 23:42 [RFC] Disable disk spinup during system resume Pádraig Brady
2011-07-21 14:49 ` Alan Stern
2011-07-21 16:18   ` Pádraig Brady
2011-07-21 16:49     ` Alan Stern
2011-07-22  9:04       ` Pádraig Brady [this message]
2011-07-22 14:05         ` Alan Stern
2011-07-22 14:05         ` [linux-pm] " Alan Stern
2011-07-22 15:50           ` Pádraig Brady
2011-07-22 17:38             ` Douglas Gilbert
2011-07-22 17:38             ` [linux-pm] " Douglas Gilbert
2011-07-22 18:03               ` Pádraig Brady
2011-07-22 18:03               ` [linux-pm] " Pádraig Brady
2011-07-22 15:50           ` Pádraig Brady

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