In 4.8.1 Using UML of lustre manual ,it instroduce an example which use nodeB take over the service of nodeA which is failed . There is two commands,what''s the order of them? In second command, lconf ----recover --select ost1=nodeB --target_uuid $2 --client_uuid $3 --conn_uuid $4 <config.xml> what''s the meaning of $2,$3,$4,how could i get it?If i want to use this function, do i need to change config.xml?In this example, do nodeA and nodeB work simutanously,and once nodeA fail,nodeB can work? Is there any other requirement of this function, such as double disk or others? I mean if i need recover a node,how i prepare it in hardware and software? _________________________________________________________________ ÏíÓÃÊÀ½çÉÏ×î´óµÄµç×ÓÓʼþϵͳ¡ª MSN Hotmail¡£ http://www.hotmail.com