Bug 1194761

It takes some time from the point pacemaker was started till it reaches
expected "up and running on the node(s)" state as indicated by crm_mon
(and, in turn, by pcs).

During such a period, "crm_mon -X" output looks like this:

# crm_mon -X
> <crm_mon version="1.1.12">
>     <summary>
>         <last_update time="Fri Feb 20 10:26:54 2015" />
>         <last_change time="" user="" client="clufter 0.3.6a" origin="" />
>         <current_dc present="false" />
>         <nodes_configured number="3" expected_votes="unknown" />
>         <resources_configured number="5" />
>     </summary>
>     <nodes>
> 	<node name="host-034.virt" id="1"
>               online="false"
>               standby="false"
>               standby_onfail="false"
>               maintenance="false"
>               pending="false"
>               unclean="true"
>               shutdown="false"
>               expected_up="false"
>               is_dc="false"
>               resources_running="0"
>               type="member" />

[other nodes ditto]

>     </nodes>
>     <resources>
>     </resources>
> </crm_mon>

leading to this output of pcs:


# pcs status
> Cluster name: 
> Last updated: Fri Feb 20 10:26:55 2015
> Last change:  via clufter 0.3.6a
> Current DC: NONE
> 3 Nodes configured
> 5 Resources configured
> 
> 
> Node host-034.virt (1): UNCLEAN (offline)

[...]

> Daemon Status:
>   corosync: active/disabled
>   pacemaker: active/disabled
>   pcsd: active/enabled

Note that pacemaker is already running.


It would be nice if pacemaker was able to indicate "starting up" on
particular nodes, perhaps by the mean of introducing new predicate
(or utilizing/overloading? the existing ones).

In a wider perspective, it might also be good if pcs was able to
wait/block until selected/all(?) nodes that are starting are indeed
started.  Some similar polling mechanisms were introduced to pcs
recently, I expect this would be in the same vein.