After upgrade to RHEL 7.6 (3.10.0-957.el7.x86_64) fcoe luns aren't visible anymore,

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Environment

  • Red Hat Enterprise Linux (RHEL) 7.6
  • kernel-3.10.0-957.el7.x86_64
  • fcoe-utils-1.0.32-1.el7

Issue

  • After upgrading to 3.10.0-957.el7.x86_64 and rebooting, all or most of the FCoE interfaces disappear:
root@localhost:~$ uname -a
Linux localhost 3.10.0-957.el7.x86_64 #1 SMP Thu Oct 4 20:48:51 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

root@localhost:~$ fcoeadm -i
fcoeadm: No action was taken
Try 'fcoeadm --help' for more information

root@localhost:~$ fcoeadm -c eth6
fcoeadm: Connection already created on interface eth6
Try 'fcoeadm --help' for more information.
root@localhost:~$ fcoeadm -c eth7
fcoeadm: Connection already created on interface eth7
Try 'fcoeadm --help' for more information.
root@localhost:~$ fcoeadm -i eth6
fcoeadm: No connection created on interface eth6
Try 'fcoeadm --help' for more information.
root@localhost:~$ fcoeadm -i eth7
fcoeadm: No connection created on interface eth7
Try 'fcoeadm --help' for more information.
  • FCoE interfaces are not automatically starting during the boot process.

Resolution

The z-stream patch has been released via errata RHBA-2019:0515. Update to fcoe-utils-1.0.32-2.el7_6 or higher.

The fix was also released with RHEL 7.7 GA Errata RHBA-2019:2119. Update to fcoe-utils-1.0.32-2.el7 or higher.

Previous workaround:

1) Try to ifdown/ifup the concern interface. 
    # ifdown eno52
    # ifup eno52

2) Add a sleep in your /etc/rc.local and reboot
    # cat /etc/rc.local
    logger "Workaround for FCOE issue startup"
    sleep 60
    service fcoe start
    # reboot

3) Boot using an older kernel (RHEL 7.5 - 3.10.0-862)

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