storage tags exported with correct values

        return '%2.0f' % psutil.cpu_percent()

    def get_storage_total_capacity(self):

        pass

        capacity = 0

        for pool in self._storage.get_pools().iteritems():

            capacity = capacity + self._storage.get_pool_space_total(pool[1])

        return capacity

    def get_storage_total_free(self):

        pass

        free = 0

        for pool in self._storage.get_pools().iteritems():

            free = free + self._storage.get_pool_space_available(pool[1])

        return free

    def get_storage_total_used(self):

        pass

        used = 0

        for pool in self._storage.get_pools().iteritems():

            used = used + self._storage.get_pool_space_used(pool[1])

        return used

    def get_status(self):

        raise NotImplementedError()