Mandatory flag - to be sure the message was delivered
ZVol blocking using sqlite3 db
add some notes on the design

This is just to write down what API should be presented by the
NAS or virutal machine image repository with a list of the
minimum _required_ input and output paramters.
This document does not reflect the current implementation.
commands: placeholder for storageimg command

This is a initial sketch for the command of the storage image
manager