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en:services:storage_services:backup:tsm:admin:fc_stuff [2023/02/03 08:39] – [Rescaning the SCSI bus] bnachtwen:services:storage_services:backup:tsm:admin:fc_stuff [2023/02/03 08:46] – [SLES] bnachtw
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 ===== WWN & Co ===== ===== WWN & Co =====
 ==== get the wwn from the adapers ==== ==== get the wwn from the adapers ====
-=== SLES === +
-<code> +
-# for i in $(ls -d /sys/class/scsi_host/host*/device/fc_host/host*/port_name); do echo $i $(cat $i);done +
-</code> +
-e.g. +
-<code> +
-# for i in $(ls -d /sys/class/scsi_host/host*/device/fc_host/host*/port_name); do echo $i $(cat $i);done +
-/sys/class/scsi_host/host15/device/fc_host/host15/port_name 0x2100f4e9d455702c +
-/sys/class/scsi_host/host16/device/fc_host/host16/port_name 0x2100f4e9d455702d +
-/sys/class/scsi_host/host17/device/fc_host/host17/port_name 0x2100f4e9d45573c8 +
-/sys/class/scsi_host/host18/device/fc_host/host18/port_name 0x2100f4e9d45573c9 +
-</code>+
 === using systool === === using systool ===
 according to [[https://www.thegeekdiary.com/how-to-identify-the-hba-cardsports-and-wwn-in-rheloel/| The Geek Diary]] according to [[https://www.thegeekdiary.com/how-to-identify-the-hba-cardsports-and-wwn-in-rheloel/| The Geek Diary]]
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 thanks to [[https://www.veritas.com/support/en_US/article.100050716|Veritas]] thanks to [[https://www.veritas.com/support/en_US/article.100050716|Veritas]]
  
 +* To list available HBA ports, type:
 +<code>
 +# ls -l /sys/class/fc_host
 +total 0
 +lrwxrwxrwx. 1 root root 0 Jun 24 13:52 host28 -> ../../devices/pci0000:80/0000:80:02.0/0000:81:00.0/host28/fc_host/host28
 +lrwxrwxrwx. 1 root root 0 Jun 24 14:15 host29 -> ../../devices/pci0000:80/0000:80:02.0/0000:81:00.1/host29/fc_host/host29
 +</code>
 + 
 +The ''lspci'' command can be used to display the available Fibre Channel  (FC) Adapters:
  
 +<code>
 +# lspci | grep Fibre
 +81:00.0 Fibre Channel: QLogic Corp. ISP8324-based 16Gb Fibre Channel to PCI Express Adapter (rev 02)
 +81:00.1 Fibre Channel: QLogic Corp. ISP8324-based 16Gb Fibre Channel to PCI Express Adapter (rev 02)
 +</code>
 +
 +The Fibre Channel (FC) HBA port access on RedHat can be temporarily disabled using the unbind string against the pci-device-id bus address.
 + 
 +Syntax:
 +
 +<code>
 +# echo "PCI-DEVICE-ID" > /sys/bus/pci/drivers/qla2xxx/unbind
 +</code> 
 +
 +To disconnect access for a specific PCI device (81:00:0), the sample syntax would be as follows:
 +
 +<code>
 +# echo "0000:81:00.0" > /sys/bus/pci/drivers/qla2xxx/unbind
 +</code>
 +
 +To display the filename & associated WWN details for all FC HBA controllers:
 +<code>
 +# awk '{print substr(FILENAME, $0)" \"" $0"\" "}'   /sys/class/fc_host/host*/port_name
 +/sys/class/fc_host/host28/port_name "0x2001000e1ec2f9ca"
 +/sys/class/fc_host/host29/port_name "0x2001000e1ec2f9cb"
 +</code>
 +
 +To display the filename & HBA port status:
 +<code>
 +# awk '{print substr(FILENAME, $0)" \"" $0"\" "}'   /sys/class/fc_host/host*/port_state
 +/sys/class/fc_host/host28/port_state "Online"
 +/sys/class/fc_host/host29/port_state "Online"
 +</code>