[Spread-users] Spread 4.0.0rc2 to official 4.0.0 upgrade

[Matt Garman]

> Thursday, November 1, 2007, 12:57:27 PM, you wrote:
> > My main question is: are 4.0.0rc2 and 4.0.0 backwards- and
> > forwards-compatible, both in the daemons and at the API level?  Do
> > we need to recompile all systems, or can we incrementally do it?

On Thu, Nov 01, 2007 at 01:35:47PM -0400, John Lane Schultz wrote:
> They are completely compatible at the API level.
> 
> I'm not 100% sure at the daemon level.  Jonathan, can you answer
> this?

My quick informal test suggests that they are *not* compatible at
the daemon level.

I have a spread segment configured for four nodes.  All nodes were
running 4.0.0rc2.  I killed one of the daemons, and re-started with
4.0.0.  It immediately crashed with an assertion failure in
G_compare_proc_ids_by_conf().

I then killed all rc2 daemons and started only 4.0.0 daemons, and
everything so far appears to be fine.

Hope this helps someone,
Matt