libguestfs could really use structured output from more of the command
line tools.  Particularly:

 - all the ext4 tools
 - all the xfs tools
 - all the btrfs tools
 - parted

and more.  See also:

  https://github.com/libguestfs/libguestfs/tree/master/daemon

A dbus service would not be useful.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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