'Calculate available space on the SMBFS share.
:param smbfs_share: example //172.18.194.100/var/smbfs'

def _get_capacity_info(self, smbfs_share):

    mount_point = self._get_mount_point_for_share(smbfs_share)
    (total_size, total_available) = self._diskutils.get_disk_capacity(mount_point)
    total_allocated = self._get_total_allocated(smbfs_share)
    return_value = [total_size, total_available, total_allocated]
    LOG.info('Smb    share    %(share)s    Total    size    %(size)s    Total    allocated    %(allocated)s', {'share': smbfs_share, 'size': total_size, 'allocated': total_allocated})
    return [float(x) for x in return_value]
