今天在Linux主机新分配五块100G，来自于Symmetrix DMX4，遇到无法fdisk emcpower*盘的情况，救助？
步骤如下：
01.# echo "- - -" > /sys/class/scsi_host/host*/scan
02.# powermt config
03.# powermt display ports
Storage class = Symmetrix
==============================================================================
----------- Storage System --------------- -- I/O Paths -- --- Stats ---
ID Interface Wt_Q Total Dead Q-IOs Errors
==============================================================================
000290105831 FA 8bA 256 5 0 0 0
000290105831 FA 9bA 256 5 0 0 0
04.# powermt display dev=all
Pseudo name=emcpowerj
Symmetrix ID=000290105831
Logical device ID=00F7
state=alive; policy=SymmOpt; priority=0; queued-IOs=0
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 qla2xxx sdav FA 9bA active alive 0 0
2 qla2xxx sdv FA 8bA active alive 0 0
Pseudo name=emcpoweri
Symmetrix ID=000290105831
Logical device ID=00FB
state=alive; policy=SymmOpt; priority=0; queued-IOs=0
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 qla2xxx sdaw FA 9bA active alive 0 0
2 qla2xxx sdw FA 8bA active alive 0 0
Pseudo name=emcpowerh
Symmetrix ID=000290105831
Logical device ID=00FF
state=alive; policy=SymmOpt; priority=0; queued-IOs=0
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 qla2xxx sdax FA 9bA active alive 0 0
2 qla2xxx sdx FA 8bA active alive 0 0
Pseudo name=emcpowerg
Symmetrix ID=000290105831
Logical device ID=0103
state=alive; policy=SymmOpt; priority=0; queued-IOs=0
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 qla2xxx sday FA 9bA active alive 0 0
2 qla2xxx sdy FA 8bA active alive 0 0
Pseudo name=emcpowerf
Symmetrix ID=000290105831
Logical device ID=0107
state=alive; policy=SymmOpt; priority=0; queued-IOs=0
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 qla2xxx sdaz FA 9bA active alive 0 0
2 qla2xxx sdz FA 8bA active alive 0 0
05.# fdisk /dev/emcpowerj
Unable to read /dev/emcpowerj
报错无法去fdisk ，救助这究竟是嘛回事？？？？？？
