Error opening /etc/cmcluster/cmknowncmds

slightsnow

syslog report: Error opening /etc/cmcluster/cmknowncmds

When I rcp the "cmknowncmds" file from another node, the error disappear.

But I don't know what is the file's function. On the HP website, I find the release about ServiceGuard A.11.17 as follows.

JAGaf40323 (SR8606380087)：/etc/cmcluster/ cmknowncmds 未记录，且易被删除
问题：现在 /etc/cmcluster 中存在一个名为 cmknowncmds 的内部文件。该文件最初作为空文件提供，因此，
用户不知道它的重要性。如果意外删除了该文件，则群集将无法启动，并在 syslog 文件中记录如下消息：
Error opening /etc/cmcluster/cmknowncmds
解决办法：向该文件中添加注释，指示用户不要删除该文件。

However, I still don't know the file how to work.
Can you help me?

links:
http://docs.hp.com/zh_cn/B3935-90089/ch01s07.html
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=763359


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