AIX ASM and raw disk...big hassle....need help

All,

I have 2 AIX 5.3 clustered systems, oracle 10.2 STANDARD Edition, and a few multipathed(SDDPCM) raw disks. I am unable to find any notes regarding my failure type. Below are the commands used to create my disk group, and the device files listing.

I did the mknod myself for the device files, as they are supposed to be the same name on each node.

Any insight is appreciate.

SQL> /
CREATE DISKGROUP DG_01 External REDUNDANCY DISK '/dev/ora_raw_1' SIZE 51200M
*
ERROR at line 1:
ORA-15018: diskgroup cannot be created
IBM AIX RISC System/6000 Error: 22: Invalid argument Additional information: -1
Additional information: 655360
IBM AIX RISC System/6000 Error: 22: Invalid argument Additional information: -1
Additional information: 655360
IBM AIX RISC System/6000 Error: 22: Invalid argument Additional information: -1
Additional information: 655360
IBM AIX RISC System/6000 Error: 22: Invalid argument Additional information: -1
Additional information: 655360
IBM AIX RISC System/6000 Error: 22: Invalid argument Additional information: -1
Additional information: 655360
IBM AIX RISC System/6000 Error: 22: Invalid argument Additional information: -1
Additional information: 655360
IBM AIX RISC System/6000 Error: 22: Invalid argument Additional information: -1
Additional information: 655360
IBM AIX RISC System/6000 Error: 22: Invalid argument Additional information: -1
Additional information: 655360
IBM AIX RISC System/6000 Error: 22: Invalid argument Additional information: -1
Additional infor

Here are the raw disk files used for the group:

+ASM2:oracle_at_mango1:/u01/app/oracle/product/10.2.0/dbs $ ll /dev/ora_*

crwxrwxrwx 1 oracle dba 41, 0 Nov 17 17:55 /dev/ora_raw_2
crwxrwxrwx 1 oracle dba 41, 2 Nov 17 17:56 /dev/ora_raw_3
crwxrwxrwx 1 oracle dba 41, 1 Nov 17 17:57 /dev/ora_raw_4
crwxrwxrwx 1 oracle dba 41, 3 Nov 17 18:05 /dev/ora_raw_1