Redhat 7.6 & RAC 12.2：CLSRSC-400

异常描述

1.环境描述

系统：Redhat 7.6
RAC：12.2.0.1

2.问题描述
当我们在静默安装GRID后，运行root.sh脚本时，会报出如下异常

3.异常输出
2020/04/18 05:01:17 CLSRSC-594: Executing installation step 14 of 19: 'InstallACFS'.
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'node1'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'node1'
CRS-2673: Attempting to stop 'ora.evmd' on 'node1'
CRS-2673: Attempting to stop 'ora.gpnpd' on 'node1'
CRS-2677: Stop of 'ora.gpnpd' on 'node1' succeeded
CRS-2677: Stop of 'ora.mdnsd' on 'node1' succeeded
CRS-2677: Stop of 'ora.evmd' on 'node1' succeeded
CRS-2673: Attempting to stop 'ora.driver.afd' on 'node1'
CRS-2673: Attempting to stop 'ora.gipcd' on 'node1'
CRS-2677: Stop of 'ora.driver.afd' on 'node1' succeeded
CRS-2677: Stop of 'ora.gipcd' on 'node1' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'node1' has completed
CRS-4133: Oracle High Availability Services has been stopped.
CRS-4123: Oracle High Availability Services has been started.
2020/04/18 05:03:05 CLSRSC-400: A system reboot is required to continue installing.
The command '/u01/app/12.2.0/grid/perl/bin/perl -I/u01/app/12.2.0/grid/perl/lib -I/u01/app/12.2.0/grid/crs/install /u01/app/12.2.0/grid/crs/install/rootcrs.pl ' execution failed

参考文档

· 参考一：http://www.xifenfei.com/2017/06/rac-12-2-root-sh-clsrsc-400.html
Redhat使用7.6以后，验证的结果与描述有些不相符，重启后故障会重现，不过却告知了我异常的原因，给了我解决方向

· 参考二： https://blog.csdn.net/johnyiyang/article/details/103006627
也许是PSU问题，也许是OPatch的原因，总之故障如下，不过却提供给了我打PSU的方向

· Installation Grid Infrastructure 12c Release 2 – root.sh, CLSRSC-184, CLSRSC-258 (Doc ID 2289380.1)

· The root.sh Fails with ORA-29783:GPnP Attribute SET Failed With Error [CLSGPNP_NOT_FOUND] (文档 ID 2180883.1)

解决方案
随着PSU、OPatch 和 Redhat的版本提升，虽然单独一个文档未能解决该问题，但参考各位大神的方案建议，最终还是攻克了这个难关，如下是我整理的解决方案

1.如下是为了解决最初遇到的bug：ACFS 导致 root.sh 执行失败所进行的步骤
CLSRSC-400: A system reboot is required to continue installing.

下载最新OPatch：p6880880补丁为了打最新的PSU，所以下载了最新的OPatch
下载最新GI升级补丁：p30920127_122010_Linux-x86-64 此处是为了修复ACFS的故障

2.执行安装脚本
./gridSetup.sh -applyPSU /u01/app/30920127 -silent -responseFile /home/grid/grid.rsp -skipPrereqs

3.此处是为了修复ASM启动失败的bug
ASM failed to start. Check /u01/app/oracle/cfgtoollogs/asmca/asmca-200419AM113741.log for details.

2020/04/19 11:38:16 CLSRSC-184: Configuration of ASM failed
2020/04/19 11:38:23 CLSRSC-258: Failed to configure and start ASM
Died at /u01/app/12.2.0/grid/crs/install/crsinstall.pm line 2112.
The command '/u01/app/12.2.0/grid/perl/bin/perl -I/u01/app/12.2.0/grid/perl/lib -I/u01/app/12.2.0/grid/crs/install /u01/app/12.2.0/grid/crs/install/rootcrs.pl ' execution failed

关闭selinux
扩展shm
修改配置文件
vi /u01/app/12.2.0/grid/crs/install/crsconfig_params
AFD_CONF=false

4.运行 root.sh脚本

5.查看状态：成功
[grid@node1 ~]$ crsctl stat res -t
--------------------------------------------------------------------------------
Name Target State Server State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
ONLINE ONLINE node1 STABLE
ONLINE ONLINE node2 STABLE
ora.LISTENER.lsnr
ONLINE ONLINE node1 STABLE
ONLINE ONLINE node2 STABLE
ora.OCRVOTING.dg
ONLINE ONLINE node1 STABLE
ONLINE ONLINE node2 STABLE
ora.net1.network
ONLINE ONLINE node1 STABLE
ONLINE ONLINE node2 STABLE
ora.ons
ONLINE ONLINE node1 STABLE
ONLINE ONLINE node2 STABLE
ora.proxy_advm
OFFLINE OFFLINE node1 STABLE
OFFLINE OFFLINE node2 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE node1 STABLE
ora.MGMTLSNR
1 OFFLINE OFFLINE STABLE
ora.asm
1 ONLINE ONLINE node1 Started,STABLE
2 ONLINE ONLINE node2 Started,STABLE
3 OFFLINE OFFLINE STABLE
ora.cvu
1 ONLINE ONLINE node1 STABLE
ora.node1.vip
1 ONLINE ONLINE node1 STABLE
ora.node2.vip
1 ONLINE ONLINE node2 STABLE
ora.qosmserver
1 ONLINE ONLINE node1 STABLE
ora.scan1.vip
1 ONLINE ONLINE node1 STABLE
--------------------------------------------------------------------------------