You have specified an invalid value for the -devices option.
The valid values for -devices option are -devices=dir=dirname, -devices=pat=pattern, -devices="none", and -devices="default", where 'dirname' is a directory containing the device special files and 'pattern' is a simple regular expression that selects the appropriate device special files. Examples:
-devices=dir=/dev/sfsdisks/ -devices=pat=/dev/sd*[a-z]
Parent topic: AIX client messages