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multipathd
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2006-11-29
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#! /bin/sh
# Copyright (c) 1995-2001 SuSE GmbH Nuernberg, Germany.
#
# Author: Thorsten Kukuk <feedback@suse.de>
#
# init.d/routed
#
# and symbolic its link
#
# /usr/sbin/rcrouted
#
### BEGIN INIT INFO
# Provides: multipathd
# Required-Start: $syslog
# Required-Stop:
# Default-Start: 3 5
# Default-Stop: 0 1 2 4 6
# Description: Starts multipath daemon
### END INIT INFO
PATH=/bin:/usr/bin:/sbin:/usr/sbin
DAEMON=/sbin/multipathd
PIDFILE=/var/run/multipathd.pid
# Set the maximum number of open files
MAX_OPEN_FDS=4096
test -x $DAEMON || exit 5
# Shell functions sourced from /etc/rc.status:
# rc_check check and set local and overall rc status
# rc_status check and set local and overall rc status
# rc_status -v ditto but be verbose in local rc status
# rc_status -v -r ditto and clear the local rc status
# rc_failed set local and overall rc status to failed
# rc_reset clear local rc status (overall remains)
# rc_exit exit appropriate to overall rc status
. /etc/rc.status
# First reset status of this service
rc_reset
# Return values acc. to LSB for all commands but status:
# 0 - success
# 1 - misc error
# 2 - invalid or excess args
# 3 - unimplemented feature (e.g. reload)
# 4 - insufficient privilege
# 5 - program not installed
# 6 - program not configured
# 7 - program is not running
#
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signalling is not supported) are
# considered a success.
case "$1" in
start)
echo -n "Starting multipathd"
modprobe dm-multipath
# Set the maximum number of open files
if [ -n "$MAX_OPEN_FDS" ] ; then
ulimit -n $MAX_OPEN_FDS
fi
if [ -f $PIDFILE ]; then
PID="$(cat $PIDFILE)"
PROCNAME="$(ps -o cmd --no-headers $PID)"
fi
if [ "$PROCNAME" != "$DAEMON" ]; then
$DAEMON
fi
# Remember status and be verbose
rc_status -v
sleep 1
;;
stop)
echo -n "Shutting down multipathd"
# Because of the way how multipathd sets up its own namespace
# and chroots to it, killproc cannot be used with this process.
# So implement a cruder version:
if [ -f $PIDFILE ]; then
PID="$(cat $PIDFILE)"
PROCNAME="$(ps -o cmd --no-headers $PID)"
fi
if [ "$PROCNAME" == "$DAEMON" ]; then
kill -TERM $PID
fi
# Remember status and be verbose
rc_status -v
;;
try-restart)
## Stop the service and if this succeeds (i.e. the
## service was running before), start it again.
$0 status >/dev/null && $0 restart
# Remember status and be quiet
rc_status
;;
restart|force-reload)
## Stop the service and regardless of whether it was
## running or not, start it again.
$0 stop
$0 start
# Remember status and be quiet
rc_status
;;
reload)
## Like force-reload, but if daemon does not support
## signalling, do nothing (!)
# If it does not support reload:
exit 3
;;
status)
echo -n "Checking for multipathd: "
# Status has a slightly different for the status command:
# 0 - service running
# 1 - service dead, but /var/run/ pid file exists
# 2 - service dead, but /var/lock/ lock file exists
# 3 - service not running
if [ -f $PIDFILE ]; then
PID="$(cat $PIDFILE)"
PROCNAME="$(ps -o cmd --no-headers $PID)"
if [ "$PROCNAME" == "$DAEMON" ]; then
(exit 0)
else
(exit 1)
fi
else
(exit 3)
fi
rc_status -v
;;
probe)
## Optional: Probe for the necessity of a reload,
## give out the argument which is required for a reload.
;;
*)
echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe}"
exit 1
;;
esac
rc_exit