fuel-plugin-ovsnfv/deployment_scripts/puppet/modules/ovsdpdk/files/set_vcpu_pin.sh

   1 #!/usr/bin/env  bash
   2
   3 # Small script for calculation of cores not suitable for deployment
   4 # of VM's and adaptation of nova.conf accordingly
   5 # nova.conf path should come as first param
   6 # this should be executed when nova is enabled and already configured
   7
   8 source /etc/default/ovs-dpdk
   9
  10 OVS_CORE_MASK=$(echo $OVS_CORE_MASK | sed 's/^0x//')
  11 OVS_PMD_CORE_MASK=$(echo $OVS_PMD_CORE_MASK | sed 's/^0x//')
  12 BAD_CORES=$((`echo $((16#${OVS_CORE_MASK}))` | `echo $((16#${OVS_PMD_CORE_MASK}))`))
  13 TOTAL_CORES=`nproc`
  14 vcpu_pin_set=""
  15
  16 for cpu in $(seq 0 `expr $TOTAL_CORES - 1`);do
  17     tmp=`echo 2^$cpu | bc`
  18     if [ $(($tmp & $BAD_CORES)) -eq 0 ]; then
  19         vcpu_pin_set+=$cpu","
  20     fi
  21 done
  22 vcpu_pin_set=${vcpu_pin_set::-1}
  23
  24 crudini --set $1 DEFAULT vcpu_pin_set $vcpu_pin_set