For rolling upgrades only

commit 653edb5d9b217f1a3280b5aed8597fb53ffa5f61 (HEAD -> develop, 
origin/develop, ticket-2521)
Author: Rafael Odzakow <rafael.odza...@ericsson.com>
Date:   Wed Jul 19 11:52:57 2017 +0200

    smf: no node locking when procedures are empty [#2521]



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** [tickets:#2451] clm: Make the cluster reset admin op safe**

**Status:** unassigned
**Milestone:** 5.17.10
**Created:** Wed May 03, 2017 10:51 AM UTC by Anders Widell
**Last Updated:** Sat Jul 01, 2017 04:15 PM UTC
**Owner:** nobody


The cluster reset admin operation that was implemented in ticket [#2053] is not 
safe: if a node reboots very fast it can come up again and join the old cluster 
before other nodes have rebooted. See mail discussion:

https://sourceforge.net/p/opensaf/mailman/message/35398725/

This can be solved by implementing a two-phase cluster reset or by introducing 
a cluster generation number which is increased at each cluster reset (maybe 
both ordered an spontaneous cluster resets). A node will not be allowed to join 
the cluster with a different cluster genration without first rebooting.


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