lofi(7D) compression support [PSARC/2007/569 FastTrack timeout 10/08/2007]

[Darren J Moffat]

Gary Winiger wrote:
>> Darren and I talked about the areas of overlap between
>> lofi encryption and lofi compression. Here's a summary
>> of what we talked about -
>>
>> Compressed lofi images are read-only so it makes sense
>> to allow either compression or encryption on an image
>> but not both at the same time.
> 
> 	I can understand doing both may be ETOOHARD or
> 	ENOTWORTHIT, and I don't see why it isn't architecturally
> 	correct to compress then encrypt/decrypt then expand.

ENOTWORTHIT because we already have compression support in ZFS and 
crypto is being added in such away that we *will* be able to compress 
then encrypt (decrypt then decompress).

-- 
Darren J Moffat