[Openais] Re: Configuration change question

[Steven Dake]

On Thu, 2004-10-14 at 12:26, Mark Haverkamp wrote:
> Steve,
> 
> If I remember correctly, the code to deliver messages from the previous
> configuration that happens in the transitional configuration isn't there
> yet.  This may explain what I am seeing during the event service
> recovery.  I now track open channels on all nodes and keep track by gmi
> messages for opens and closes.  At reconfig time, Each node sends its
> open count for each channel via gmi to update any nodes that may be new.
> What I am seeing is that sometimes the open count that a node receives
> is different than its notion of opens for that node.  I think that maybe
> an open or close was partially distributed then the config change
> happened and some nodes didn't get the open/close.  Is it possible for

No this is not possible even with the current code (unless there is a
bug).  All messages will be recovered from the old configuration before
any configuration change is delivered.  If all messages are not
recovered, you will see a repeating EVS %d %d %d lines as I'm sure you
have seen in the past..

If a message is sent after a configuration change, it will not be
delivered until the new configuration is formed.

The idea of VS is that we can ensure that the messages and configuration
changes occur in the same order on every processor that is a member of
the old and new configuration.  This probably solves the problem your
having (if it works right..).

Regards
-steve

> that to happen the way the code is currently implemented?
> 
> Thanks,
> Mark.