File boot.compcache of Package compcache

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File boot.compcache of Package compcache (Revision 12cebb19f12e549e9855e1eb762663ef)

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#!/bin/sh
#
# System startup script loading compcache kernel module
# Copyright (C) 2008 Takashi Iwai <tiwai@suse.de>
# Added SMP support by Erdem U. Altinyurt <spamjunkeater@gmail.com>
# /etc/init.d/compcache
#
### BEGIN INIT INFO
# Provides:          compcache
# Required-Start:    boot.swap
# Required-Stop:     boot.swap
# Should-Start:      
# Should-Stop:
# Default-Start:     B
# Default-Stop:      B
# Description: Loads compcache - compressed RAM based swap device
### END INIT INFO

. /etc/rc.status
. /etc/sysconfig/compcache

SWAPON_BIN=/sbin/swapon
SWAPOFF_BIN=/sbin/swapoff
UDEVADM_BIN=/sbin/udevadm
MODPROBE_BIN=/sbin/modprobe
RZSCTL_BIN=/usr/sbin/rzscontrol
SWAPDEVNM=/dev/ramzswap
COMPCACHE_NUM_DEVICES=$(cat /proc/cpuinfo | grep processor | wc -l)
COMPCACHE_SIZE_KB=$(expr $(grep MemTotal /proc/meminfo | sed 's/^.*  //;s/ .*$//g') / 4) #%25 of ram

is_comp_swap_on () {
    grep -q $1 /proc/swaps
    return $?
}

rc_reset

case "$1" in
    start)
	test -z "$COMPCACHE_NUM_DEVICES" && COMPCACHE_NUM_DEVICES="1"
	param="NUM_DEVICES=$COMPCACHE_NUM_DEVICES"
	echo -n "Loading ramzswap driver with $COMPCACHE_NUM_DEVICES devices and $(expr $COMPCACHE_SIZE_KB / 1024 )MB memory"
	$MODPROBE_BIN -q ramzswap num_devices=$COMPCACHE_NUM_DEVICES &>/dev/null
   rc_status -v
	# /dev/ramzswap0 is not available immediately after insmod returns
	# So, let udev complete its work before we do swapon
	for i in $(seq 0 $(expr $COMPCACHE_NUM_DEVICES - 1) ); do
		SWAPDEV=$SWAPDEVNM$i
		if [ ! -f $SWAPDEV ]; then
		    if [ -f "$UDEVADM_BIN" ]; then
			$UDEVADM_BIN settle
		    else
			sleep 2
		    fi
		fi
		test -z "$COMPCACHE_SIZE_KB" && COMPCACHE_SIZE_KB="0"
		if [ "$COMPCACHE_SIZE_KB" -gt 0 ]; then
			 $RZSCTL_BIN $SWAPDEV -d $(expr $COMPCACHE_SIZE_KB / $COMPCACHE_NUM_DEVICES) -i
		else
			 $RZSCTL_BIN $SWAPDEV -i
		fi

if ! is_comp_swap_on $SWAPDEV; then
			 echo -n "Setting up ramzswap swap device $i"
			 $SWAPON_BIN $SWAPDEV -p 10
			 rc_status -v
		fi
		done
		;;
	 stop)
	for i in $(seq 0 $(expr $COMPCACHE_NUM_DEVICES - 1) ); do
		SWAPDEV=$SWAPDEVNM$i
		if is_comp_swap_on $SWAPDEV; then
			 echo -n "Turning off ramzswap swap device $i"
			 $SWAPOFF_BIN $SWAPDEV
			 rc_status -v
		fi
		done
	echo -n "Unloading ramzswap module"
	$MODPROBE_BIN -qr ramzswap &>/dev/null
	rc_status -v

;;
	 restart)
	$0 stop
	$0 start
	;;
	 status)
	echo -n "Checking for compcache "
	if is_comp_swap_on $SWAPDEVNM; then
		 rc_failed 0
	else
		 rc_failed 3
	fi
	rc_status -v
	;;
	 *)
	echo "Usage: $0 {start|stop|status|restart}"
	exit 1
	;;
esac
rc_exit

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File boot.compcache of Package compcache (Revision 12cebb19f12e549e9855e1eb762663ef)

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