有点晕倒了ORA-15018: diskgroup cannot be created ORA-15307: disk DATAA_0001 not discov？

DiskGroup DATA creation failed with the following message:
ORA-15018: diskgroup cannot be created
ORA-15307: disk DATA_0001 not discoverable by CSS
这个问题在第三次安装的时候再次出现；权限都很正常的情况下；真不知道还会有什么原因了。。。。。。。。晕倒

ls -l /dev/ | grep rhdiskpower*
crwxrwxrwx 1 grid oinstall 47, 0 Mar 26 14:55 rhdiskpower0
crwxrwxrwx 1 grid oinstall 47, 1 Mar 26 14:55 rhdiskpower1
crwxrwxrwx 1 grid oinstall 47, 2 Mar 23 17:29 rhdiskpower2
crwxrwxrwx 1 grid oinstall 47, 3 Mar 23 15:18 rhdiskpower3
crwxrwxrwx 1 grid oinstall 47, 4 Feb 27 16:27 rhdiskpower4
crwxrwxrwx 1 grid oinstall 47, 5 Feb 27 16:27 rhdiskpower5
crwxrwxrwx 1 grid oinstall 47, 6 Feb 27 16:27 rhdiskpower6
crwxrwxrwx 1 grid oinstall 47, 7 Feb 27 15:55 rhdiskpower7

哪位有oracle 11.2.0.3版本的版本下载？会不会是11.2.0.1版本bug造成的呢？感觉不稳定