Q-Logic 8100 SERIES 用户手册

8–Configuring FCoE in a Linux Environment
N_Port ID Virtualization

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4.

To benefit from I/O segregation and NPIV monitoring after creating a virtual 
port, configure zoning on the FCoE switch, and configure selective LUN 
presentation on the Fibre Channel or FCoE target array. For information 
about configuring the FCoE switch and target array, refer to the switch and 
target array documentation.

Use sysfs to verify that a virtual adapter port has been created by searching 
sys/class/scsi_host/hostX for a new entry. Issue the following command, 

where X is the virtual port SCSI host ID for the virtual port:

#ls –l /sys/class/scsi_host/hostX/

The new virtual port is the first available numeral in the list of hostX entries in 
/sys/class/scsi_host/. To discern between adapter virtual and physical 

ports in sysfs, refer to 

.

Alternatively, you can display all virtual ports created on a physical adapter port. 
For example:

# ls –l /sys/class/scsi_host/host4/device/

 shows that host6, host7 and host8 are the three virtual ports that exist 

for the physical port host4.

If you reload the FCoE driver (qla2xxx), or reboot the server, all virtual ports 
are discarded.