2009/310 Disk IO PM Enhancement

[Garrett D'Amore]

Terry (Sarito) Whatley wrote:
> I believe that I can make the case that this case is obvious
> and standalone, and that it is the presentation of the material
> so far that is the problem, but I'm on vacation next week.
> So I've marked the case "waiting need spec" and will take
> it up again when I return.

I'll look at it more carefully then; but I will tell you this much -- 
the meaty part of the entire case seemed like it was most definitely not 
"obvious".   Part of that may be from my general experience with SCSA 
and sd -- the SCSA stack is among the more complex subsystems in 
Solaris, IMO, and I would like to be especially careful with any change 
that is going to increase that complexity.

(In retrospect, I believe that my hack to make blk2scsa available for 
non-SCSI devices to use "sd" may have been a misguided attempt to avoid 
having to teach all the userland subsystems about a new disk driver, but 
that's a different rant entirely.... :-)

In any event, I'll go over the materials carefully sometime in the next 
week.

    -- Garrett
>
> -sarito