Removing MIC Module: FATAL: Module mic is in use

[Xiao_peng_W_]

I was testing the steps to update mpss, when I tried to run 'service mpss unload' as mentioned in readme to uninstall old version of mpss rpms, I got the error message: Removing MIC Module: FATAL: Module mic is in use.

Finally I could remove all the installed mpss rpms and installed mpss again, but the error 'Removing MIC Module: FATAL: Module mic is in use' would cause the new installed mic driver does not take effect.

That means I have to reboot my host node to make mic drvier to take effect. Am I right?

[Frances_R_Intel]

The unload should have worked. The fact that it didn't leads me to believe the mpss didn't shut down. You might want to take a look at 'micctrl -s' and /var/log/mpssd. I would not try to uninstall while the mic kernel module is still in use. If the mpss is running and looking at the log file doesn't give you a clue what to do about it, I would first try to force the kernel module to unload with 'modprobe –r –f mic'. If that didn't work, I would try to disable the mpss service from starting on reboot if it will let you - I don't know if 'chkconfig mpss off' will work while the mpss service is running - then try rebooting the host and, if the mic kernel module load, doing the service mpss unload again. Let me know what happens.

[Xiao_peng_W_]

Sorry for the later reply.

Force to unload mic does not work in my env
  # modprobe -r -f mic
   FATAL: Module mic is in use.
 
Then I tried to turn off mpss and reboot host node
  # chkconfig mpss off
  # reboot
 
After reboot, the mic driver was still in loaded status. And I could not unload it too.
  # lsmod | grep mic
    mic                   592027  4
  # service mpss status
    mpss is stopped
  # service mpss unload
    Shutting down Intel(R) MPSS:
    Removing MIC Module: FATAL: Module mic is in use.
                                                           [FAILED]

In the readme, it said you should run 'servcie mpss unload' before uninstalling. But it does not work.