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Viewing: lnet-sysctl-config

#!/usr/bin/bash

sysctl_conf_file="/etc/lnet-sysctl.conf"
sysctl_conf_bak="/etc/lnet-sysctl.bak"

# Check if the user wants to enable sysctl settings
sysctlstat=$(cat /sys/module/lnet/parameters/enable_sysctl_setup 2>&-)

if [[ "${sysctlstat}" != "1" ]]; then
	if [ -f "${sysctl_conf_bak}" ]; then
		/usr/sbin/sysctl -p "${sysctl_conf_bak}" 2>&-
		rm -f "${sysctl_conf_bak}"
	fi
	exit 0
fi

# create backup file for reset
echo "# Generated backup for original lnet-sysctl.conf parameters" \
     > "${sysctl_conf_bak}" 2>&-
while IFS= read -r line; do
	# Couldn't break this line
	if [[ "$line" =~ \
	      ^[[:space:]]*([a-zA-Z0-9_.-]+)[[:space:]]*=[[:space:]]*([a-zA-Z0-9_.-]+)[[:space:]]*$ \
	   ]]; then
		value=$(/usr/sbin/sysctl -n "${BASH_REMATCH[1]}")
		echo "${BASH_REMATCH[1]}=${value}" >> "${sysctl_conf_bak}" 2>&-
	fi
done < "${sysctl_conf_file}"

# set configuration values
/usr/sbin/sysctl -p "${sysctl_conf_file}" 2>&-
exit $?