On 09/24/2010 01:16 AM, Christoph Rissner wrote: I also suspect btrfs was waking up the disk pretty > often (at least thats what lm-profiler told me). > > Its a pity, but someday I will try it again. > > Christoph > I did notice this problem. Even without anything running I could not get my drive to spin down for over 20 seconds or so.