no , what I want exactly is : 1) node 1 read /root/subroot/A 2) other nodes cannot read /root/subroot/A as node 1 is reading it (locked) 3) node 5 read /root/subroot/B 4) other nodes cannot read /root/subroot/B as node 5 is reading it (locked) 5) node 1 finishing reading (and writing optionally) on A, so A is available for others (unlocked) 6) node 5 finishing reading (and writing optionally) on B, so B is available for others (unlocked) so do u see how I can achieve it ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4158284#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...