On 11-07-22 11:50 AM, Pádraig Brady wrote:
On 22/07/11 15:05, Alan Stern wrote:
On Fri, 22 Jul 2011, Pádraig Brady wrote:
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 :(
I have no idea why. Unless maybe the BIOS started the drive.
Here's another test you can try. Before starting the suspend, make
sure no filesystems are mounted on sda and do:
echo scsi remove-single-device 0 0 0 0>/proc/scsi/scsi
(replace the "0 0 0 0" with the appropriate Host, Channel, ID, and LUN
values for your sda drive). This will erase all knowledge of that
drive from the kernel. If it still spins up during resume, you can be
sure the kernel isn't responsible.
drive still spins up on resume.
Did the disk (/dev/sda) spin down after
sdparm -r -C STOP /dev/sda
? I'm guessing that neither the root file system nor swap
are located on /dev/sda ?
Doug Gilbert
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