[plug] Standby and Power consumption

[Craig Ringer]

> | I can spin down my other two disks for long periods, but my boot drive 
> | only stays spun down for a few seconds.
> 
> Have you looked at hdparm -S and noflushd?  It notices when a drive is
> spun down and tells the kernel not to write stuff to that drive for a
> while.

It doesn't help the kernels 'swappiness' though, nor does it warn the 
kernel that the drive is being spun down, so don't complain about DMA 
timeouts when you try to access it - spin it up first instead. Noflushd 
also doesn't seem to help with ext3 or resiserfs filesytems.