安装19C GI 执行root.sh报错ORA-15107: missing or invalid ASM disk name

在安装19C GI，执行root.sh时报错如下：

[root@iotdb3node1 ~]# /u01/app/oraInventory/orainstRoot.sh
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.
[root@iotdb3node1 ~]# /u01/app/19.0.0/grid/root.sh
Performing root user operation.

The following environment variables are set as:
    ORACLE_OWNER= grid
    ORACLE_HOME=  /u01/app/19.0.0/grid

Enter the full pathname of the local bin directory: [/usr/local/bin]: 
   Copying dbhome to /usr/local/bin ...
   Copying oraenv to /usr/local/bin ...
   Copying coraenv to /usr/local/bin ...


Creating /etc/oratab file...
Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root script.
Now product-specific root actions will be performed.
Relinking oracle with rac_on option
Using configuration parameter file: /u01/app/19.0.0/grid/crs/install/crsconfig_params
The log of current session can be found at:
  /u01/app/grid/crsdata/iotdb3node1/crsconfig/rootcrs_iotdb3node1_2020-08-20_07-09-18AM.log
2020/08/20 07:09:26 CLSRSC-594: Executing installation step 1 of 19: 'SetupTFA'.
2020/08/20 07:09:26 CLSRSC-594: Executing installation step 2 of 19: 'ValidateEnv'.
2020/08/20 07:09:26 CLSRSC-363: User ignored prerequisites during installation
2020/08/20 07:09:26 CLSRSC-594: Executing installation step 3 of 19: 'CheckFirstNode'.
2020/08/20 07:09:28 CLSRSC-594: Executing installation step 4 of 19: 'GenSiteGUIDs'.
2020/08/20 07:09:29 CLSRSC-594: Executing installation step 5 of 19: 'SetupOSD'.
2020/08/20 07:09:29 CLSRSC-594: Executing installation step 6 of 19: 'CheckCRSConfig'.
2020/08/20 07:09:29 CLSRSC-594: Executing installation step 7 of 19: 'SetupLocalGPNP'.
2020/08/20 07:09:55 CLSRSC-4002: Successfully installed Oracle Trace File Analyzer (TFA) Collector.
2020/08/20 07:09:55 CLSRSC-594: Executing installation step 8 of 19: 'CreateRootCert'.
2020/08/20 07:09:59 CLSRSC-594: Executing installation step 9 of 19: 'ConfigOLR'.
2020/08/20 07:10:13 CLSRSC-594: Executing installation step 10 of 19: 'ConfigCHMOS'.
2020/08/20 07:10:14 CLSRSC-594: Executing installation step 11 of 19: 'CreateOHASD'.
2020/08/20 07:10:19 CLSRSC-594: Executing installation step 12 of 19: 'ConfigOHASD'.
2020/08/20 07:10:19 CLSRSC-330: Adding Clusterware entries to file 'oracle-ohasd.service'
2020/08/20 07:10:58 CLSRSC-594: Executing installation step 13 of 19: 'InstallAFD'.
2020/08/20 07:11:04 CLSRSC-594: Executing installation step 14 of 19: 'InstallACFS'.
2020/08/20 07:11:51 CLSRSC-594: Executing installation step 15 of 19: 'InstallKA'.
2020/08/20 07:11:56 CLSRSC-594: Executing installation step 16 of 19: 'InitConfig'.
[FATAL] [DBT-30002] Disk group OCRDG creation failed.
ORA-15018: diskgroup cannot be created
ORA-15107: missing or invalid ASM disk name
2020/08/20 07:13:06 CLSRSC-184: Configuration of ASM failed
2020/08/20 07:13:09 CLSRSC-258: Failed to configure and start ASM
Died at /u01/app/19.0.0/grid/crs/install/crsinstall.pm line 2484.
复制

这是由于磁盘头中的现有内容不干净，因此不符合ASMCA要求，
因此与ASMCA执行有冲突。

解决办法：
第一步、
[root@db3node1 ~]# dd if=/dev/zero of=/dev/sdb1 bs=1M count=10000
dd: error writing ‘/dev/sdb1’: No space left on device
5120+0 records in
5119+0 records out
5367660544 bytes (5.4 GB) copied, 5.23938 s, 1.0 GB/s
[root@db3node1 ~]# dd if=/dev/zero of=/dev/sdc1 bs=1M count=1000
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 0.921206 s, 1.1 GB/s
[root@db3node1 ~]# dd if=/dev/zero of=/dev/sdd1 bs=1M count=1000
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 0.92427 s, 1.1 GB/s
[root@iotdb3node1 ~]#

第二部、
重新执行root.sh