storage: naive implementation of find_space

        except libvirt.libvirtError as e:

            raise StorageError("Failed to delete the volume (%s)" % e)

    def find_space(self, new_space):

        '''

        Tries to find a suitable chunk of space to store new_space.

        :param new_space: a space size in gigabytes

        :type new_space: :class:`str`

        :return: a :class:`tuple` of possible locations or :class:`False` if no

            space is suitable

        '''

        pool_names = self.hv_handle._con_handle.listStoragePools()

        for pool_name in pool_names:

            try:

                pool = self.hv_handle._con_handle \

                    .storagePoolLookupByName(pool_name)

            except libvirt.libvirtError as e:

                raise StorageError("Failed to fetch pool data (%s)" % e)

            try:

                if new_space * GIGABYTE_DIV < pool.info()[3]:

                    return (pool_name)

            except libvirt.libvirtError as e:

                raise StorageError("Can't query pool informations (%s)" % e)

        return False

#### Helper functions