On 10/10/07, Tejun Heo <htejun@xxxxxxxxx> wrote: > Maybe what should be done is to track sleep mode in libata and issue > SRST automatically if a command is issued to a sleeping drive. I'll > work on it. Another tidbit of info.. I just went through the pain of tracking down everything in my system (system apps as well as my own code) responsible for waking up sleeping drives. My end goal was to make sure sleeping drives stayed asleep to reduce power consumption and wear due to unnecessary spin-ups. I'm sure distros targeting laptops or embedded systems that use live disks go through this pain frequently. Would all SRST cmds sent from libata come from the ata_std_softreset() call? Could something like SystemTap be used without modifying libata to track all pids which cause that function to be called? If that would work, it could be an easy way to do what I did manually. That is, unless someone knows of an easier way that I'm overlooking.. :) I might give that a try to see if it works well and document the result. -Andrew - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
