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Ronnie Sahlberg a89ed0fdc2 add a new tunable 'NoIPFailback'
when this tunable is set, ip addresses will only be failed over when a node
fails. And only those ip addresses held by the failed node will be reallocated
in the cluster.

When a node becomes active again, this will not lead to any failback of ip addresses.

This can reduce the number of "ip address movements" in the cluster since we dont automatically fail an ip address back, but can also lead to an unbalanced cluster since we no longer attempt to spread the ip addresses out evenly across the active nodes.

This tuneable can NOT be active at the same time as DeterministicIPs are used.

(This used to be ctdb commit d3b8a461b15bc584fa1785eb5922de6d49d8f6c4)
2008-03-03 12:52:16 +11:00
ctdb add a new tunable 'NoIPFailback' 2008-03-03 12:52:16 +11:00