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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next prev parent reply other threads:[~2011-07-22 9:04 UTC|newest]
Thread overview: 9+ 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
[not found] <Pine.LNX.4.44L0.1107220951280.1923-100000@iolanthe.rowland.org>
2011-07-22 15:50 ` Pádraig Brady
[not found] ` <4E299C4A.6060802@draigBrady.com>
2011-07-22 17:38 ` Douglas Gilbert
[not found] ` <4E29B5A8.4030204@interlog.com>
2011-07-22 18:03 ` Pádraig Brady
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