Issue

• 为什么新加进来的LUN被加入到已存在的mpath设备而不是重新创建mpath设备?
  加入新的LUN之前：

  [root@test ~]# multipath -ll
  36005076802898138f40000000000000e dm-2 IBM,2145
  [size=30G][features=1 queue_if_no_path][hwhandler=0][rw]
  \_ round-robin 0 [prio=0][active]
  \_ 1:0:0:1   sdb   8:16  [active][undef]
  \_ round-robin 0 [prio=0][enabled]
  \_ 0:0:0:1   sda   8:0   [active][undef]
  [root@test ~]#
  

加入新的LUN之后：

    [root@gest]# multipath -ll 
    36005076802898138f40000000000000e dm-2 IBM,2145
    [size=30G]        [features=1 queue_if_no_path][hwhandler=0][rw]
    \_ round-robin 0 [prio=0][enabled]
    \_ 1:0:0:1   sdb   8:16  [active][undef]
    \_ 1:0:0:2   sdd   8:48  [active][undef]
    \_ round-robin 0 [prio=0][enabled]
    \_ 0:0:0:1   sda   8:0   [active][undef]
    \_ 0:0:0:2   sdc   8:32  [active][undef]
    [root@test]#