SFMH mh_driver.pl --family NR consumes very high ~49% CPU time.

Problem

SFMH mh_driver.pl --family NR consumes very high ~49% CPU time.

Solution

ISSUE:
 PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU PROCESS/NLWP
 6997 root      775M  774M cpu0     0    0   0:09:16  49% mh_driver.pl/1


RESOLUTION:
Please turn off the array discovery process, which gets started by xprtld.

  # cd /var/opt/VRTSsfmh
  # cp scheduler.conf scheduler.conf-orig

Edit scheduler.conf to add a pound sign for the

  # discovery_S50-NR : 5 - - - - /opt/VRTSsfmh/bin/mh_driver.pl --family NR --hidden

Please stop the process such as

   root  8382  1166  50 13:29:01 ?           9:48 /opt/VRTSsfmh/bin/perl /opt/VRTSsfmh/bin/mh_driver.pl --family NR --hidden  

Please stop and restart xprtld:
 
  #  /opt/VRTSsfmh/bin/xprtld -X 1 /etc/opt/VRTSsfmh/xprtld.conf


Please note that after you add a new LUN, please manully execute the following command:

# /opt/VRTSsfmh/bin/mh_driver.pl --family NR --hidden  



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