On Sat, Apr 4, 2009 at 4:31 PM, Timothy Murphy gayleard@eircom.net wrote:
Has anyone experience with WOL under Centos (5.3).? If so, how exactly do you put the machine to sleep, and how exactly do you wake it up remotely?
Put the machine in a suspend to ram state using acpi:
echo -n mem > /sys/power/state you can use disk instead of mem
Machine should go down real quick - if you've got services / devices running that aren't compatible with suspend, it may wake up right away.
This "works for me" under Fedora 10, no idea about how it would work under Centos 5.3 - but it appears the interface is there regardless. I had to unmount nfs directories and unload my network driver before the system would stay asleep. if you put the sleep command in a script, when the OS wakes, it will continue executing the script, making it easy to resume services / devices that needed to be discontinued prior to sleeping.
-Gordon