[INS-30516] Please specify unique disk groups

安装Grid软件时，报错 [INS-30516]：

[FATAL] [INS-30516] Please specify unique disk groups.

Preparing to launch Oracle Universal Installer from /tmp/OraInstall2021-04-23_05-12-42AM. Please wait ...[FATAL] [INS-30516] Please specify unique disk groups.
   CAUSE: Installer has detected that the diskgroup name provided already exists on the system.
   ACTION: Specify different disk group.
A log of this session is currently saved as: /tmp/OraInstall2021-04-23_05-12-42AM/installActions2021-04-23_05-12-42AM.log. Oracle recommends that if you want to keep this log, you should move it from the temporary location to a more permanent location.

根据提示，是磁盘组名称冲突了， 由于使用starwind共享的存储进行搭建，之前曾经搭建过RAC,存在同名ASM磁盘组，并没有做清空操作， 尝试dd清空了一下：

[root@localhost soft]# dd if=/dev/zero of=/dev/sdb bs=10M count=1000
513+0 records in
512+0 records out
10737418240 bytes (11 GB) copied, 41.22 s, 260 MB/s
[root@localhost soft]# dd if=/dev/zero of=/dev/sdc bs=20M count=1000
1000+0 records in
1000+0 records out
20971520000 bytes (21 GB) copied, 84.1046 s, 249 MB/s

再次运行GRID安装程序，安装成功：

Starting Oracle Universal Installer...

Checking Temp space: must be greater than 120 MB.   Actual 41987 MB    Passed
Checking swap space: must be greater than 150 MB.   Actual 4031 MB    Passed
Preparing to launch Oracle Universal Installer from /tmp/OraInstall2021-04-23_05-21-58AM. Please wait ...[WARNING] [INS-30011] The SYS password entered does not conform to the Oracle recommended standards.
   CAUSE: Oracle recommends that the password entered should be at least 8 characters in length, contain at least 1 uppercase character, 1 lower case character and 1 digit [0-9].
   ACTION: Provide a password that conforms to the Oracle recommended standards.
[WARNING] [INS-30011] The ASMSNMP password entered does not conform to the Oracle recommended standards.
   CAUSE: Oracle recommends that the password entered should be at least 8 characters in length, contain at least 1 uppercase character, 1 lower case character and 1 digit [0-9].
   ACTION: Provide a password that conforms to the Oracle recommended standards.
You can find the log of this install session at:
 /u01/app/oraInventory/logs/installActions2021-04-23_05-21-58AM.log

Prepare in progress.
..................................................   9% Done.

Prepare successful.

Copy files in progress.
..................................................   15% Done.
..................................................   20% Done.
..................................................   25% Done.
..................................................   30% Done.
..................................................   35% Done.
..................................................   40% Done.
..................................................   45% Done.
........................................
Copy files successful.

Link binaries in progress.

Link binaries successful.
..................................................   62% Done.

Setup files in progress.

Setup files successful.
..................................................   76% Done.

Perform remote operations in progress.
..................................................   89% Done.

Perform remote operations successful.
The installation of Oracle Grid Infrastructure 11g was successful.
Please check '/u01/app/oraInventory/logs/silentInstall2021-04-23_05-21-58AM.log' for more details.
..................................................   94% Done.

Execute Root Scripts in progress.

As a root user, execute the following script(s):
	1. /u01/app/oraInventory/orainstRoot.sh
	2. /u01/app/11.2.0/grid/root.sh

Execute /u01/app/oraInventory/orainstRoot.sh on the following nodes: 
[lucifer01, lucifer02]
Execute /u01/app/11.2.0/grid/root.sh on the following nodes: 
[lucifer01, lucifer02]

..................................................   100% Done.

Execute Root Scripts successful.
As install user, execute the following script to complete the configuration.
	1. /u01/app/11.2.0/grid/cfgtoollogs/configToolAllCommands RESPONSE_FILE=<response_file>

 	Note:
	1. This script must be run on the same host from where installer was run. 
	2. This script needs a small password properties file for configuration assistants that require passwords (refer to install guide documentation).


Successfully Setup Software.
Changing permissions of /u01/app/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.

Changing groupname of /u01/app/oraInventory to oinstall.
The execution of the script is complete.
Changing permissions of /u01/app/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.

Changing groupname of /u01/app/oraInventory to oinstall.
The execution of the script is complete.
Check /u01/app/11.2.0/grid/install/root_lucifer01_2021-04-23_05-26-27.log for the output of root script