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Full Discussion: Hacmp
Operating Systems AIX Hacmp Post 302799471 by MichaelFelt on Friday 26th of April 2013 02:47:48 PM
Old 04-26-2013
Little time - so I shall be quick.

What PowerHA/HACMP (now System Mirror) monitors - traditionally - is the topology - for failures - and based on what has happened, it makes modifications.

1) Disks are a resource, not topology
2) diskhb network is a NON-IP network, so application service is not dependent on that.
3) HACMP does not respond - out of the box - to resource failures. You need to setup an application and/or event notification to respond to that.

Suppose, rather than both fc - you had said both/all ethernet (i.e., IP connectivity) - the result would be the same - HACMP does not move the resource group. This is because HACMP can see both nodes are operational - but NO nodes (there are only two!) can communicate with other. When no nodes can communicate via IP network HACMP concludes a "Global" network failure, and since no nodes can communicate - it does not matter where the application/service is at - no clients could communicate - so nothing is moved.

The short of it - you need to configure an application monitor that "decides", whether to move or not. A simple way to force a move (one that would work "out of the box" is a so-called panic halt (halt -q). Not really recommended of course, but it does, in an educational/test phase help demonstrate what events HACMP responds to, and what events it does not respond to.

Hope this helps.
 

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PACEMAKER(8)						  System Administration Utilities					      PACEMAKER(8)

NAME
Pacemaker - Part of the Pacemaker cluster resource manager SYNOPSIS
crm_node command [options] DESCRIPTION
crm_node - Tool for displaying low-level node information OPTIONS
-?, --help This text -$, --version Version information -V, --verbose Increase debug output -Q, --quiet Essential output only Stack: -A, --openais Only try connecting to an OpenAIS-based cluster -H, --heartbeat Only try connecting to a Heartbeat-based cluster Commands: -n, --name Display the name used by the cluster for this node -N, --name-for-id=value Display the name used by the cluster for the node with the specified id -e, --epoch Display the epoch during which this node joined the cluster -q, --quorum Display a 1 if our partition has quorum, 0 if not -l, --list Display all known members (past and present) of this cluster (Not available for heartbeat clusters) -p, --partition Display the members of this partition -i, --cluster-id Display this node's cluster id -R, --remove=value (Advanced) Remove the (stopped) node with the specified name from Pacemaker's configuration and caches In the case of Heartbeat, CMAN and Corosync 2.0, requires that the node has already been removed from the underlying cluster Additional Options: -f, --force AUTHOR
Written by Andrew Beekhof REPORTING BUGS
Report bugs to pacemaker@oss.clusterlabs.org Pacemaker 1.1.10-29.el7 June 2014 PACEMAKER(8)
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