Linux 在系统日志文件中记载加载模块和驱动程序过程中提供了这样的信息，该文件通常放在 /var/log/messages中。每过一段时间，会生成一个新的日志文件messages，旧的文件就会被改名成messages.#，其中 # 是一个增加的编号。
以root登录，并查看系统日志文件中包含最后服务器启动时的信息，
用以下的命令：
less /var/log/messages
查找最后系统启动和对光纤卡初始化信息。对每个卡，你将看到启动的过程，当卡被打开时，将会显示 WWN 信息：
Mar 5 10:32:25 kernel: (scsi): Found a QLA2200 @ bus 10,device 8, irq 23, iobase 0xb000
Mar 5 10:32:25 kernel: scsi(2): Configure NVRAM parameters...
Mar 5 10:32:25 kernel: scsi(2): Verifying loaded RISC code...
Mar 5 10:32:25 kernel: scsi(2): Verifying chip...
Mar 5 10:32:25 kernel: scsi(2): LIP reset occurred
Mar 5 10:32:25 kernel: scsi(2): LIP occurred.
Mar 5 10:32:25 kernel: scsi(2): Waiting for LIP to complete...
Mar 5 10:32:25 kernel: scsi(2): LOOP UP detected
Mar 5 10:32:25 kernel: scsi(2): Waiting for LIP to complete...
Mar 5 10:32:25 kernel: scsi2: Topology - (Loop), Host Loop address 0x0
Mar 5 10:32:25 kernel: scsi-qla0-adapter-node=0000000000000000;
Mar 5 10:32:25 kernel: scsi-qla0-adapter-port=210000e08b027386;
Mar 5 10:32:25 kernel: scsi-qla0-target-0=200500a0b80b1223;
Mar 5 10:32:25 kernel: (scsi): Found a QLA2200 @ bus 10, device 9, irq 24, iobase 0xb100
Mar 5 10:32:25 kernel: scsi(3): Configure NVRAM parameters...
Mar 5 10:32:25 kernel: scsi(3): Verifying loaded RISC code...
Mar 5 10:32:25 kernel: scsi(3): Verifying chip...
Mar 5 10:32:25 kernel: scsi(3): Waiting for LIP to complete...
Mar 5 10:32:25 kernel: scsi(3): LIP reset occurred
Mar 5 10:32:25 kernel: scsi(3): LIP occurred.
Mar 5 10:32:25 kernel: scsi(3): LOOP UP detected
Mar 5 10:32:25 kernel: scsi(3): Waiting for LIP to complete...
Mar 5 10:32:25 kernel: scsi3: Topology - (Loop), Host Loop address 0x1
Mar 5 10:32:25 kernel: scsi-qla1-adapter-node=0000000000000000;
Mar 5 10:32:25 kernel: scsi-qla1-adapter-port=210000e08b027286;
Mar 5 10:32:25 kernel: scsi-qla1-target-0=200400a0b80b1223;
可以看到在 scsi-qla?-adapter-port 行中的等号后就是该卡的 WWN.
