File zfs.init of Package zfs

#!/bin/sh
#
### BEGIN INIT INFO
# Provides:          zfs
# Required-Start:    $local_fs
# Should-Start:      
# Required-Stop:     $local_fs
# Should-Stop:       
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: Mount/umount the zfs filesystems
# Description:       ZFS is an advanced filesystem designed to simplify managing
#	and protecting your data.  This service mounts the ZFS
#	filesystems and starts all related zfs services.
### END INIT INFO

# Check for missing binaries (stale symlinks should not happen)
# Note: Special treatment of stop for LSB conformance
/sbin/modinfo zfs > /dev/null 2>&1 || { echo "zfs kernel module not installed";
	if [ "$1" = "stop" ]; then exit 0;
	else exit 5; fi; }

ZFS_BIN=/usr/sbin/zfs
test -x $ZFS_BIN || { echo "$ZFS_BIN not installed";
	if [ "$1" = "stop" ]; then exit 0;
	else exit 5; fi; }

ZPOOL_BIN=/usr/sbin/zpool
test -x $ZPOOL_BIN || { echo "$ZPOOL_BIN not installed";
	if [ "$1" = "stop" ]; then exit 0;
	else exit 5; fi; }

LOCKFILE=/var/lock/zfs
ZPOOL_CACHE="/etc/zfs/zpool.cache"

. /etc/rc.status

# Reset status of this service
rc_reset


start()
{
	[ -f "$LOCKFILE" ] && return 0

	# Requires selinux policy which has not been written.
	if [ -r "/selinux/enforce" ] &&
	   [ "$(cat /selinux/enforce)" = "1" ]; then
		echo "SELinux ZFS policy required"
		return 6
	fi

	# Delay until all required block devices are present.
	udevadm settle

	# Load the zfs module stack
	if ! grep -q zfs /proc/modules ; then
		/sbin/modprobe zfs
		sleep 1
	fi

	# Import all pools described by the cache file, and then mount
	# all filesystem based on their properties.
	if [ -f $ZPOOL_CACHE ]; then
		echo "Importing ZFS pools"
		# as per fedora script, import can fail if all pools are already imported
		# The check for $rv makes no sense...but someday, it will work right.
		$ZPOOL_BIN import -c $ZPOOL_CACHE -aN 2>/dev/null || true
		rv=$?
		if [ $rv -ne 0 ]; then
			echo "Failed to import not-yet imported pools."
			return $rv
		fi
	fi

	echo "Mounting ZFS filesystems"
	$ZFS_BIN mount -a
	rv=$?
	if [ $rv -ne 0 ]; then
		echo "Failed to mount ZFS filesystems."
		return $rv
	fi

	echo "Exporting ZFS filesystems"
	$ZFS_BIN share -a
	rv=$?
	if [ $rv -ne 0 ]; then
		echo "Failed to export ZFS filesystems."
		return $rv
	fi

	touch "$LOCKFILE"
}

stop()
{
	[ ! -f "$LOCKFILE" ] && return 0

	$ZFS_BIN umount -a
	if [ $? -ne 0 ]; then
		# Don't fail if we couldn't umount everything.  /usr might be in use
		return 0
	fi

	rm -f "$LOCKFILE"
}

status()
{
	rv=0
	lsmod | grep -q zfs || rv=3
	$ZPOOL_BIN status && echo && $ZFS_BIN list || {
		[ -f "$LOCKFILE" ] && rv=2 || rv=4
	}
	return $rv
}


case "$1" in
	start)
		echo -n "Starting zfs "
		start
		rc_status -v
		;;
	stop)
		echo -n "Shutting down zfs "
		stop
		rc_status -v
		;;
	try-restart|condrestart)
		status
		if [ $? -eq 0 ]; then
			$0 restart
		else
			rc_reset
		fi
		rc_status
		;;
	restart)
		$0 stop
		$0 start
		rc_status
		;;
	reload)
	        rc_failed 3
	        rc_status -v
	        ;;
	status)
		echo -n "Checking for service zfs "
		status
		rc_status -v
		;;
	*)
		echo "Usage: $0 {start|stop|status|try-restart|restart|reload}"
		exit 1
		;;
esac
rc_exit