'Return the defined storage mappings for a host.'

def _get_hostvdisk_mappings(self, host_name):

    return_data = {}
    ssh_cmd = ['svcinfo', 'lshostvdiskmap', '-delim', '!', host_name]
    (out, err) = self._ssh(ssh_cmd)
    mappings = out.strip().split('\n')
    if mappings:
        header = mappings.pop(0)
        for mapping_line in mappings:
            mapping_data = self._get_hdr_dic(header, mapping_line, '!')
            return_data[mapping_data['vdisk_name']] = mapping_data
    return return_data
