topic The unload should have worked in Software Archive

Removing MIC Module: FATAL: Module mic is in use

Xiao_peng_W_ — Mon, 11 Nov 2013 14:38:24 GMT

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?

The unload should have worked

Frances_R_Intel — Mon, 11 Nov 2013 18:52:12 GMT

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_ — Thu, 21 Nov 2013 01:40:52 GMT

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.