DM-multipath live or die
 

Dear All,
i've two question first one how to change dm-multipath ( native linux multipath software) policy from load balancing to failover ..

second question
ive 3 RHEL5 servers connected to EVA4400 (dual HBA with dual ports for each one , dual SAN switch )
when EVA4400 moved LUN from controller A to B ( or from B to A)
number of active paths for this LUN goes down and some time
multipathd: lun1: remaining active paths: 0
which make our production environment goes down ,
what should i do