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Re: [Linux-cluster] Help with CMAN



Aneesh,

In the latest code, the membership layer is handled entirely in
userspace.  The CMAN component is a plugin of the openais standards
based cluster framework.  openais uses a protocol called The Totem
Single Ring Ordering and Membership protocol for all communication.

It would be possible to feed membership messages and regular messages
from totem into the kernel using configfs or some other system.  I
believe some of this work has already been done.  Dave would know more
since its his area of expertise.

Regards
-steve

On Mon, 2006-06-26 at 23:28 +0530, Aneesh Kumar wrote:
> Hi All,
> 
> I am looking at using CMAN as the membership manager for the cluster
> project i am working on. The project ( http://ci-linux.sf.net ) helps
> in writing kernel cluster services much easier and also make the
> service independent of transport. We TCP/IP and IP over infiniband
> already done. People are working on tranport using IB verbs.
> 
>   I am right now trying to understand how to use CMAN as the
> membership service. Which is the source code against i should work on.
>  i was going through the code and found a cman-kernel and cman
> directory. But then cman-kernel module was making some  level
> communication from within the kernel.  Is there a documentation
> explaining these components and how they interact ?
> 
> -aneesh
> 
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