I'm trying to make this snapshots/subvolumes listing feature,
I wonder how the interface should be.
I tried to make this feature using ioctl interface, but I don't
know how to notify all subvolume informations because number
of subvolumes are not known before search.
(It may work, that we call
Suppose I want to do test something insane (like a massive OS update) to
my system, and create a snapshot before doing so. Afterwards, if I
decide my system is hosed and I'd like to revert back to the snapshot
and forget any of this actually happened, what's the quickest way of
doing it. It
