sles11 sp2下安装powerpath

环境：

系统：sles11 sp2

磁阵：EMC AX4-5

连接：每个服务器2块HBA卡

report1:~ # rpm  -ivh  EMCPower.LINUX-5.7.0.00.00-421.SLES11SP2.x86_64.rpm
Preparing...                ########################################### [100%]
   1:EMCpower.LINUX         ########################################### [100%]
All trademarks used herein are the property of their respective owners.
NOTE:License registration is not required to manage the CLARiiON AX series array.
  
*** IMPORTANT *** 
Please check the following configurations before starting PowerPath:
   - Set LVM filter in /etc/lvm/lvm.conf according to PowerPath recommendation.
   - Blacklist all devices in /etc/multipath.conf and stop multipathd service.
   - Install PowerPath license(s) and ensure that policy is not set to BasicFailover.
   - If no license is available, ensure that only one HBA port is active in the host.
     PowerPath supports only single-HBA configuration when unlicensed.
Refer to PowerPath Installation and Administration Guide for details.

问题：安装powerpath之前，fdisk  -l只能看到3块盘，其中本地盘一块，磁阵AX4-5  2个盘（2个lun，每个lun只发现一条路径），但安装后，发现每个lun为2条路径，不知为什么？

PS:如果双机两边emcpower盘符不一致，可以采用emcpadm命令修改一致

emcpadm rename -s emcpowerx -t emcpowerX