v2 was here:
https://www.redhat.com/archives/libguestfs/2017-June/msg00008.html
This series gets as far as a working (and faster) reimplementation of
‘guestfs_list_filesystems’.
I also have another patch series on top of this one which reimplements
the inspection APIs inside the daemon, but that needs a bit more work
still, since inspection turns out to be a very large piece of code.
Rich.