How to know the remote storage port WWPN to which the system is connected?

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#rport #wwpn

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博客围绕Red Hat Enterprise Linux 5、6、7系统展开，提出如何知晓主机当前登录的存储端口的问题。决议指出sysfs包含相关存储端口信息，也可使用sysfsutils包中的命令。还提及可在另一篇文章中找到更多信息，最后探讨了rport及获取其更多信息的方法。

https://access.redhat.com/solutions/677853

SOLUTION 已验证 - 已更新 2014年十月24日00:20 -

English

环境

Red Hat Enterprise Linux 5
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7

问题

How to know the storage ports the host is currently logged into?

决议

The sysfs contains references to the storage ports the host is currently logged into

grep -vH "zZzZ" /sys/class/fc_remote_ports/rport*/port_name


/sys/class/fc_remote_ports/rport-0:0-0/port_name:0x5005076802206687
/sys/class/fc_remote_ports/rport-0:0-1/port_name:0x5005076802106686
/sys/class/fc_remote_ports/rport-0:0-2/port_name:0x500507680215b5ea  
/sys/class/fc_remote_ports/rport-0:0-3/port_name:0x500507680215b5e9  
/sys/class/fc_remote_ports/rport-1:0-0/port_name:0x5005076802106687
/sys/class/fc_remote_ports/rport-1:0-1/port_name:0x5005076802206686

Alternatively you can use the following command from the sysfsutils package:

/usr/bin/systool -c fc_remote_ports -v

:
.
  Class Device = "0-3"
  Class Device path = "/sys/devices/pci0000:00/0000:00:07.0/0000:0e:00.0/host1/rport-1:0-3/fc_remote_ports/rport-1:0-3"
    dev_loss_tmo        = "30"
    fast_io_fail_tmo    = "off"
    maxframe_size       = "2048 bytes"
    node_name           = "0x500507608b87de9a"
    port_id             = "0x010700"
    port_name           = "0x500507680215b5e9"
    port_state          = "Online"
    roles               = "FCP Initiator"
    scsi_target_id      = "-1"
    supported_classes   = "Class 3"
:
.

From the above output the remote storage ports are

Raw

1. 0x5005076802206687 
2. 0x5005076802106686
3. 0x500507680215b5ea 
4. 0x500507680215b5e9
5. 0x5005076802106687
6. 0x5005076802206686

Additional information can be found within How do I find the FC ID (WWN) of a disk/LUN on Red Hat Enterprise Linux? which covers identifying the full set of WWN -- hba, switch, storage port, and lun -- along a path to a device.