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#!/bin/bash
#
# Start/Stop the workload manager
#
# Copyright IBM Corporation. 2008
#
# Authors: Balbir Singh <balbir@linux.vnet.ibm.com>
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2.1 of the GNU Lesser General Public License
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# cgconfig Control Groups Configuration Startup
# chkconfig: - 5 95
# description: This script runs the cgconfigparser utility to parse and setup
# the control group filesystem. It uses /etc/cgconfig.conf
# and parses the configuration specified in there.
### BEGIN INIT INFO
# Provides: cgconfig
# Required-Start:
# Required-Stop:
# Should-Start:
# Should-Stop:
# Short-Description: start and stop the WLM configuration
# Description: This script allows us to create a default configuration
### END INIT INFO
# get correct location of binaries from configure
prefix=@prefix@;exec_prefix=@exec_prefix@;sbindir=@sbindir@
CGCONFIGPARSER_BIN=$sbindir/cgconfigparser
CGROUP_FS=cgroup
CONFIG_FILE=/etc/cgconfig.conf
# support multiple mount points
declare -a MOUNTPOINT
declare -a MOUNTOPTS
maxindex=0
servicename=cgconfig
#
# Source LSB routines
#
. /lib/lsb/init-functions
# read the config
CREATE_DEFAULT=yes
if [ -e /etc/sysconfig/cgconfig ]; then
. /etc/sysconfig/cgconfig
fi
create_default_groups() {
declare defaultcgroup
if [ -f /etc/cgrules.conf ]
then
read user ctrl defaultcgroup <<< \
`grep -m1 ^\* /etc/cgrules.conf`
if [[ -n $defaultcgroup && $defaultcgroup = "*" ]]
then
log_warning_msg "/etc/cgrules.conf incorrect"
log_warning_msg "Overriding it"
defaultcgroup=
fi
fi
if [ -z $defaultcgroup ]
then
defaultcgroup=sysdefault/
fi
#
# Find all mounted subsystems and create comma-separated list
# of controllers.
#
controllers=`lssubsys 2>/dev/null | tr '\n' ',' | sed s/.$//`
#
# Create the default group, ignore errors when the default group
# already exists.
#
cgcreate -g $controllers:$defaultcgroup 2>/dev/null
#
# special rule for cpusets
#
if echo $controllers | grep -q -w cpuset; then
cpus=`cgget -nv -r cpuset.cpus /`
cgset -r cpuset.cpus=$cpus $defaultcgroup
mems=`cgget -nv -r cpuset.mems /`
cgset -r cpuset.mems=$mems $defaultcgroup
fi
#
# Classify everything to default cgroup. Ignore errors, some processes
# may exit after ps is run and before cgclassify moves them.
#
cgclassify -g $controllers:$defaultcgroup `ps --no-headers -eL o tid` \
2>/dev/null || :
}
start() {
echo -n "Starting cgconfig service: "
if [ -f /var/lock/subsys/$servicename ]
then
log_warning_msg "lock file already exists"
return
fi
if [ $? -eq 0 ]
then
$CGCONFIGPARSER_BIN -l $CONFIG_FILE
retval=$?
if [ $retval -ne 0 ]
then
log_failure_msg "Failed to parse " $CONFIG_FILE
return $retval
fi
fi
if [ $CREATE_DEFAULT == "yes" ]; then
create_default_groups
fi
touch /var/lock/subsys/$servicename
retval=$?
if [ $retval -ne 0 ]
then
log_failure_msg "Failed to touch " /var/lock/subsys/$servicename
return $retval
fi
log_success_msg
return 0
}
stop() {
echo -n "Stopping cgconfig service: "
cgclear
rm -f /var/lock/subsys/$servicename
log_success_msg
}
trapped() {
#
# Do nothing
#
true
}
usage() {
echo "$0 <start|stop|restart|condrestart|status>"
exit 1
}
common() {
#
# main script work done here
#
trap "trapped ABRT" ABRT
trap "trapped QUIT" QUIT
trap "trapped TERM" TERM
trap "trapped INT" INT
}
case $1 in
'stop')
common
stop;
;;
'start')
common
start;
;;
'restart')
common
stop
start
;;
'reload')
common
stop
start
;;
'condrestart')
if [ -f /var/lock/subsys/$servicename ] ; then
stop
start
fi
;;
'status')
if [ -f /var/lock/subsys/$servicename ] ; then
echo "Running"
else
echo "Stopped"
fi
;;
*)
usage
;;
esac
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