  We study one dimensional disordered bosons at large commensurate filling.
Using a real space renormalization group approach we find a new random fixed
point which controls a phase transition from a superfluid to an incompressible
Mott-glass. The transition can be tuned by changing the disorder distribution
even with vanishing interactions. We derive the properties of the transition,
which suggest that it is in the Kosterlitz-Thouless universality class.
