08-28-2009
Hm not sure if HACMP will allow this kind of konfiguration. But tbh with clusters I would try to keep it as simple as possible so maybe have 1 backup for each of them. I know that this is no great help, but I would stay with 2 node clusters for each of the applications. No idea what kind of applications if HACMP + Oracle RAC is an option etc. or if you can consolidate any of the apps/prod nodes to get more LPARs as backup nodes.
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LEARN ABOUT DEBIAN
votequorum_leaving
VOTEQUORUM_LEAVING(3) Corosync Cluster Engine Programmer's Manual VOTEQUORUM_LEAVING(3)
NAME
votequorum_leaving - Tell other nodes that we are leaving the cluster
SYNOPSIS
#include <corosync/votequorum.h>
int votequorum_leaving(votequorum_handle_t handle);
DESCRIPTION
The votequorum_leaving function is used to tell the other nodes in the cluster that this node is leaving. They will (when the node actually
leaves) reduce quorum to keep the cluster running without this node.
This function should only be called if it is known that the node is being shut down for a known reason and could be out of the cluster for
an extended period of time.
Normal behaviour is for the cluster to reduce the total number of votes, but NOT expected_votes when a node leave the cluster, so the clus-
ter could become inquorate. This is correct behaviour and is ther eto prevent split-brain.
Do NOT call this function unless you know what you are doing.
RETURN VALUE
This call returns the CS_OK value if successful, otherwise an error is returned.
ERRORS
The errors are undocumented.
SEE ALSO
votequorum_overview(8), votequorum_initialize(3), votequorum_finalize(3), votequorum_dispatch(3), votequorum_fd_get(3),
corosync Man Page 2009-01-26 VOTEQUORUM_LEAVING(3)