CentOS下启用Oracle ACFS步骤是什么
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CentOS默认不在Oracle官方支持的操作系统之列。ACFS这个特性在安装Grid时也没有安装。尝试安装时，会提示"Not Supported"
安装Oracle Enterprise Linux的内核
上传一个OEL 7.3的ISO文件
用ISO做一个本地yum源
安装
yum-config-manager --disable ol7*
yum-config-manager --enable ol7_UEKR3
sed -i 's/DEFAULTKERNEL=kernel/DEFAULTKERNEL=kernel=uek/' /etc/sysconfig/kernel
yum install kernel-uek kernel-uek-devel
安装之后：
grub2-editenv list
init 6
打GRID软件补丁
补丁：25078431
1.替换掉opatch工具
p6880880_180000_Linux-x86-64.zip
这里所有节点的opatch都要替换
2. 解压补丁包
unzip /u01/p25078431_122010_Linux-x86-64.zip -d /tmp
3. 打补丁
/u01/app/12.2.0/grid/OPatch/opatchauto apply /tmp/25078431
两个节点都要打
4. 修改Oracle配置文件
修改$GRID_HOME/lib/osds_acfslib.pm
参考：
https://blog.csdn.net/weiwangsisoftstone/article/details/78813518
[root@rac01 lib]# vi osds_acfslib.pm
# Testing for "oraclelinux_release", etc prevents us from dropping
# into the code below from other RH based distros like CentOS, for example.
if ((defined($release)) && # Redhat or OEL if defined
(($release =~ /^redhat-release/) || # straight RH
($release =~ /^enterprise-release/) || # Oracle Enterprise Linux
($release =~ /^centos-release/) || # CentOS hack
($release =~ /^oraclelinux-release/))) # Oracle Linux
启用ACFS模块
[root@ncrac4 lib]# acfsroot install
ACFS-9300: ADVM/ACFS distribution files found.
ACFS-9314: Removing previous ADVM/ACFS installation.
ACFS-9315: Previous ADVM/ACFS components successfully removed.
ACFS-9307: Installing requested ADVM/ACFS software.
ACFS-9308: Loading installed ADVM/ACFS drivers.
ACFS-9321: Creating udev for ADVM/ACFS.
ACFS-9323: Creating module dependencies - this may take some time.
ACFS-9154: Loading 'oracleoks.ko' driver.
ACFS-9154: Loading 'oracleadvm.ko' driver.
ACFS-9154: Loading 'oracleacfs.ko' driver.
ACFS-9327: Verifying ADVM/ACFS devices.
ACFS-9156: Detecting control device '/dev/asm/.asm_ctl_spec'.
ACFS-9156: Detecting control device '/dev/ofsctl'.
ACFS-9309: ADVM/ACFS installation correctness verified.
[root@ncrac4 lib]# acfsload start -s
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