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. > > > >> I tried this to no avail: > >> > >> echo 0 > /sys/block/sda/device/scsi_disk/*/manage_start_stop > > > > Try adding a dump_stack() line to > > drivers/scsi/sd.c:sd_start_stop_device() and see what shows up in the > > kernel log. > > Tried that, and nothing is calling it for sda > (There were calls for sdb of course). > So it seems like something lower level :( Not at all -- nothing at a lower level generates SCSI commands. This means it is something at a higher level, like a program using SG_IO to pass the START STOP command to the drive directly. > I'll keep digging. 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"? Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
