install oracle grid Infrastructure 11.2.0.4 on solaris 11.1 change owner for asm disk fail

Hi all, My plan intall oracle RAC two node 11.2.0.4 on solaris 11.1 x86 using vitual box. I have problem about change owner for user own AMS diskgroup, please help me to solve this problem, many thanks

- I had format disk and changed owner for grid user
chown grid:asmadmin /dev/rdsk/c7t5d0s5
chmod 660 /dev/rdsk/c7t5d0s5
 
- I checked device is owner by grid:asmadmin
 root@core1:/dev/rdsk# ls -lL c7t5d0s5
crw-rw----   1 grid     asmadmin 206, 389 Dec 20 20:35 c7t5d0s5

root@core2:/dev/rdsk# ls -lL c7t5d0s5
crw-rw----   1 grid     asmadmin 206, 389 Dec 20 20:35 c7t5d0s5