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Unix Study之--AIX系统构建RAC通过ASM磁盘共享

运维开发网 https://www.qedev.com 2020-02-03 16:14 出处:网络 作者:客居天涯
Unix Study之--AIX系统构建RAC通过ASM磁盘共享如上图所示:hdisk0支持reserve_policy,而hdisk1却不支持reserve_policy。在AIX系统上,构建ASM磁盘共享的RAC环境,需要设置reserve_policy。安装rac要将reserve_lock(reserve_policy)设置成NO或no_reserve,目的是因为RAC 需要&n

Unix Study之--AIX系统构建RAC通过ASM磁盘共享

Unix Study之--AIX系统构建RAC通过ASM磁盘共享

如上图所示:hdisk0支持reserve_policy,而hdisk1却不支持reserve_policy。

在AIX系统上,构建ASM磁盘共享的RAC环境,需要设置reserve_policy。

安装rac要将reserve_lock(reserve_policy)设置成NO或no_reserve,目的是因为RAC 需要 并发的共享盘 ,所以盘不能被一台机器锁住

如果不设置说不上什么时候会出问题。

操作:

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To enable simultaneous access to a disk device from multiple nodes, you must set the appropriate Object Data Manager (ODM) attribute listed in the following table to the value shown, depending on the disk type:

Disk Type Attribute Value

SSA, FAStT, or non-MPIO-capable disks reserve_lock no

ESS, EMC, HDS, CLARiiON, or MPIO-capable disks

reserve_policy no_reserve

To determine whether the attribute has the correct value, enter a command similar to the following on all cluster nodes for each disk device that you want to use:

# /usr/sbin/lsattr -E -l hdiskn

If the required attribute is not set to the correct value on any node, then enter a command similar to one of the following on that node:

■ SSA and FAStT devices

# /usr/sbin/chdev -l hdiskn -a reserve_lock=no

■ ESS, EMC, HDS, CLARiiON, and MPIO-capable devices

# /usr/sbin/chdev -l hdiskn -a reserve_policy=no_reserve

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