thanks for the reply, only db.data was deleted (renamed in fact). The locks work in testing when stopping/killing/switching off the master instance of ActiveMQ and the slave takes over and the same when going back.
I'll need to see if I can have the NFS share failing on both servers at the same time and coming back at the same time to then see what happens. -- Sent from: http://activemq.2283324.n4.nabble.com/ActiveMQ-User-f2341805.html