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#!/usr/bin/env bash
# This script is patching /usr/lib/python2.7/dist-packages/nova/network/linux_net.py
# More specifically it's adding '1' as recognized exit code
# it's WA and will work just when _setr_device_mtu will not change dramatically
# step1) get ROW for patching
FILE="/usr/lib/python2.7/dist-packages/nova/network/linux_net.py"
ROW=`grep -n "def _set_device_mtu(dev, mtu=None):" $FILE | cut -d ":" -f 1`
# step2) use sed for patching it
sed -i.bck "$((ROW+8))s/check_exit_code=\[0, 2, 254\]/check_exit_code=\[0, 1, 2, 254\]/" $FILE
diff $FILE $FILE.bck
if [ $? -eq 0 ]; then
echo "WARNING: linux_net.py not patched, please check if it's really needed"
else
echo "SUCCESS: linux_net.py patched"
fi
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