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|
#! /bin/sh
# Copyright (c) 2005 SuSE GmbH Nuernberg, Germany.
#
# Author: Hannes Reinecke <feedback@suse.de>
#
# init.d/boot.multipath
#
### BEGIN INIT INFO
# Provides: boot.multipath
# Required-Start: boot.device-mapper boot.udev
# Required-Stop: boot.device-mapper boot.udev
# Should-Start: boot.xdrsetsite
# Should-Stop: boot.xdrsetsite
# Default-Start: B
# Default-Stop:
# Short-Description: Create multipath device targets
# Description: Setup initial multipath device-mapper targets
### END INIT INFO
PATH=/bin:/usr/bin:/sbin:/usr/sbin
PROGRAM=/sbin/multipath
# Set the maximum number of open files
MAX_OPEN_FDS=4096
# Number of seconds to wait for disks and partitions
MPATH_DEVICE_TIMEOUT=30
test -x $PROGRAM || 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)
# Check for existing multipath mappings
if dmsetup table --target multipath | grep -q multipath ; then
# Multipath active, start daemon
exec /etc/init.d/multipathd $1
fi
echo -n "Creating multipath targets:"
# Check whether multipath daemon is already running
if /sbin/multipathd -k"list paths" > /dev/null 2>&1 ; then
echo -n " (multipathd running)"
rc_status -v
rc_exit
fi
# Load prerequisite module
modprobe dm-multipath
# Set the maximum number of open files
if [ -n "$MAX_OPEN_FDS" ] ; then
ulimit -n $MAX_OPEN_FDS
fi
# Start the program directly as checkproc doesn't work here
$PROGRAM -v 0
echo -n " (waiting for udev)"
# Wait for all multipathed devices to appear
maplist=$(/sbin/dmsetup ls --target multipath | sed '/No devices/d' | sed -n 's/\(^[^ ()]*\)[\t ]*.*/\1/p')
wait=$MPATH_DEVICE_TIMEOUT
while [ $wait -gt 0 ] ; do
num=0
for map in $maplist; do
[ -e /dev/disk/by-id/dm-name-$map ] && continue
num=$((num + 1))
done
[ $num -eq 0 ] && break
wait=$((wait - 1))
sleep 1;
done
if [ $wait -le 0 ] ; then
echo -n " timeout: $num devices left"
rc_failed 1
else
# Reset to wait for partitions
wait=$MPATH_DEVICE_TIMEOUT
fi
# Wait for all partitions on multipathed devices
while [ $wait -gt 0 ] ; do
num=0
for map in $maplist ; do
[ -e /dev/disk/by-id/dm-name-$map ] || continue
partlist=$(/sbin/kpartx -l -p _part /dev/disk/by-id/dm-name-$map | sed 's/\([^ ]*\) :.*/\1/p')
for part in $partlist; do
[ -e /dev/disk/by-id/dm-name-$part ] && continue
num=$((num + 1))
done
done
[ $num -eq 0 ] && break
wait=$((wait - 1))
sleep 1;
done
if [ $wait -le 0 ] ; then
echo -n "timeout: $num partitions left"
rc_failed 1
fi
# Remember status and be verbose
rc_status -v
;;
stop)
echo -n "Removing multipath targets:"
# Flush all existing maps
$PROGRAM -F
rc_failed 0
rc_status -v
;;
status)
echo -n "Checking multipath targets: "
# Display active multipath tables
tblnum=$(/sbin/dmsetup ls --target multipath | sed '/No devices/d' | wc --lines)
if [ "$tblnum" ] && [ $tblnum -gt 0 ] ; then
echo -n "($tblnum multipath devices) "
rc_failed 0
else
rc_failed 3
fi
rc_status -v
;;
restart)
$0 stop
$0 start
;;
*)
echo "Usage: $0 {start|stop|status|restart}"
exit 1
;;
esac
rc_exit
|
