#! /bin/bash
### BEGIN INIT INFO
# Provides: zfs-fuse
# Required-Start: fuse $remote_fs
# Required-Stop: fuse $remote_fs
# Default-Start: S
# Default-Stop: 0 6
# Short-Description: Daemon for ZFS support via FUSE
# Description: Mounts and makes available ZFS volumes
### END INIT INFO
# Author: Bryan Donlan <bdonlan@gmail.com>
set -u # Error on uninitialized variabled
set -e # Error on uncaught non-zero exit codes
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/local//sbin/zfs-fuse
NAME=zfs-fuse
DESC=zfs-fuse
# also overriden from /etc/default/zfs-fuse:
ENABLE_ZFS=yes
DAEMON_OPTS="" # deprecated, prefer /etc/zfs/zfsrc
RESTART_ON_UPGRADE=no
### Fallback functions in case lsb-base isn't available (eg in postinst)
log_action_begin_msg() {
echo -n "$1..."
}
log_action_cont_msg() {
echo -n "$1..."
}
log_action_end_msg() {
echo "$2"
}
log_daemon_msg() {
echo -n "$1: $2"
}
log_end_msg() {
if [ "x$1" = "x0" ]; then
echo "ok"
else
echo "failed"
fi
}
if [ -r /lib/lsb/init-functions ]; then
. /lib/lsb/init-functions
fi
FORCE_STOP=no
upgrade_zpool_cache_location()
{
oldcache=/etc/zfs/zpool.cache # this changed per 0.6.9, only needed when upgrading from earlier versions
newcache=/var/lib/zfs/zpool.cache
if [[ -f $oldcache && ! -e $newcache ]]; then
log_action_msg "Moving existing zpool.cache to new location"
mkdir -p $(dirname $newcache)
mv $oldcache $newcache
else
if [ -e $oldcache ]; then
log_action_msg "Note: old zpool.cache present but no longer used ($oldcache)"
fi
fi
}
is_running() {
### XXX: this produces output for some reason
start-stop-daemon --stop --test --quiet --pidfile \
/var/run/$NAME.pid --exec $DAEMON &>/dev/null
}
do_stop() {
if is_running; then
log_action_begin_msg "Unmounting ZFS filesystems"
if ! zfs umount -a; then
log_action_end_msg 1 "possibly due to open files on mounted zfs volumes"
if [ "x$FORCE_STOP" = "xyes" ]; then
log_action_msg "Will forcibly terminate ZFS daemon"
else
return 1
fi
else
log_action_end_msg 0
fi
log_daemon_msg "Stopping $NAME" "zfs-fuse"
if start-stop-daemon --stop --quiet --pidfile \
/var/run/$NAME.pid --exec $DAEMON
then
## wait for it to stop, up to 12 seconds
## 10 seconds is the wait time for worker threads to complete their
## work before the daemon forcibly terminates them and completes
## shutdown
COUNTER=0
while is_running; do
sleep 1
COUNTER=$(($COUNTER + 1))
if [ $COUNTER -ge 12 ]; then
log_end_msg 1 "Timed out"
exit 1
fi
done
rm -f /var/run/$NAME.pid
log_end_msg 0
return 0
else
log_end_msg 1
return 1
fi
fi
}
do_start() {
if is_running; then
log_action_msg "zfs-fuse is already running"
return 1
fi
if [ "x$ENABLE_ZFS" != "xyes" ]; then
log_action_msg "Disabled by /etc/default/$NAME" >&2
return 1
fi
upgrade_zpool_cache_location
log_daemon_msg "Starting $NAME" "zfs-fuse"
if [ -n "$DAEMON_OPTS" ]; then
log_action_cont_msg "Warning: use of DAEMON_OPTS deprecated: use /etc/zfs/zfsrc instead"
fi
ulimit -v unlimited
ulimit -c 512000
ulimit -l unlimited
ulimit -s unlimited
unset LANG
if start-stop-daemon --start --quiet --pidfile \
/var/run/$NAME.pid --exec $DAEMON -- $DAEMON_OPTS --pidfile /var/run/$NAME.pid
then
log_end_msg 0
log_action_begin_msg "Immunizing $NAME against OOM kills and sendsigs signals"
echo -17 > /proc/$(cat /var/run/$NAME.pid)/oom_adj
ES_TO_REPORT=$?
if [ "$ES_TO_REPORT" = 0 ] ; then
log_action_end_msg 0
else
log_action_end_msg 1 "code $ES_TO_REPORT"
exit 3
fi
log_action_begin_msg "Mounting ZFS filesystems"
if zfs mount -a
then zfs share -a; log_action_end_msg 0; return 0
else log_action_end_msg 1; return 1
fi
else
log_end_msg 1
return 1
fi
}
do_restart() {
if is_running; then
## We don't want restart to act like stop
ENABLE_ZFS=yes
fi
do_stop && sleep 1 && do_start
}
upgrade_restart() {
if is_running && [ "x$RESTART_ON_UPGRADE" = "xno" ]; then
echo "Not restarting $NAME; \$RESTART_ON_UPGRADE is set to 'no'" >&2
echo "Administrative binaries (zfs, zpool) may not work until" >&2
echo "zfs-fuse is restarted." >&2
exit 0
fi
do_restart || {
echo "Proceeding with upgrade anyway. Please note that administrative binaries" >&2
echo "such as zfs or zpool may not work properly until the zfs-fuse daemon is" >&2
echo "restarted." >&2
exit 0
}
}
test -x $DAEMON || exit 0
# Include zfs-fuse defaults if available
if [ -f /etc/default/zfs-fuse ] ; then
. /etc/default/zfs-fuse
fi
case "$1" in
start)
do_start || exit $?
;;
stop)
do_stop || exit $?
;;
force-stop)
FORCE_STOP=yes
do_stop || exit $?
;;
reload)
echo "Nothing to do, exiting." >&2
exit 0
;;
#
# If the daemon can reload its config files on the fly
# for example by sending it SIGHUP, do it here.
#
# If the daemon responds to changes in its config file
# directly anyway, make this a do-nothing entry.
#
# echo "Reloading $DESC configuration files."
# start-stop-daemon --stop --signal 1 --quiet --pidfile \
# /var/run/$NAME.pid --exec $DAEMON
#;;
force-reload)
#
# If the "reload" option is implemented, move the "force-reload"
# option to the "reload" entry above. If not, "force-reload" is
# just the same as "restart" except that it does nothing if the
# daemon isn't already running.
# check wether $DAEMON is running. If so, restart
is_running && $0 restart || exit $?
;;
restart)
## --upgrade is an undocumented flag used by the postinst
## $2 may be undefined here
set +u
UPGRADE_FLAG="$2"
set -u
if [ "x$UPGRADE_FLAG" = "x--upgrade" ]; then
upgrade_restart || exit $?; exit $?
fi
do_restart || exit $?
;;
force-restart)
FORCE_STOP=yes
do_restart || exit $?
;;
*)
N=/etc/init.d/$NAME
# echo "Usage: $N {start|stop|restart|reload|force-reload}" >&2
echo "Usage: $N {start|stop|force-stop|restart|force-restart|force-reload}" >&2
exit 1
;;
esac
exit 0
