[Pacemaker] Why CIB is client of CCM?

[Andrew Beekhof]

On Tue, Jan 5, 2010 at 3:22 AM, Javen Wu <wu.javen at gmail.com> wrote:
> Thanks Beekhof for answering my question.
> I don't mean it matters. I just feel confuse why the function seems
> redundant when I tried to understand the code of pacemaker ;)
>
> I understand the CIB should be workable without CRMD around. But is CRMD
> dependant on the CIB? I think the answer is "yes".

correct

> Since CRMD must work with CIB, as long as CIB is aware of the memberhsip
> change when CCM report new membership, CRMD would get notified by CIB
> eventually. Am I right?

No.  The crmd doesn't look inside the cib for those kind of updates.

> I still don't understand if only CIB register to be
> the client of CCM, would the pacemaker still work normally?

No.