etc/init.d/zfs-zed.in

   1 #!@DEFAULT_INIT_SHELL@
   2 # shellcheck disable=SC2154
   3 #
   4 # zfs-zed
   5 #
   6 # chkconfig:    2345 29 99
   7 # description:  This script will start and stop the ZFS Event Daemon.
   8 # probe: true
   9 #
  10 ### BEGIN INIT INFO
  11 # Provides:          zfs-zed
  12 # Required-Start:    zfs-mount
  13 # Required-Stop:     zfs-mount
  14 # Default-Start:     2 3 4 5
  15 # Default-Stop:      0 1 6
  16 # X-Stop-After:      zfs-share
  17 # Short-Description: ZFS Event Daemon
  18 # Description:       zed monitors ZFS events. When a zevent is posted, zed
  19 #                    will run any scripts that have been enabled for the
  20 #                    corresponding zevent class.
  21 ### END INIT INFO
  22 #
  23 # Released under the 2-clause BSD license.
  24 #
  25 # This script is based on debian/zfsutils.zfs.init from the
  26 # Debian GNU/kFreeBSD zfsutils 8.1-3 package, written by Aurelien Jarno.
  27
  28 # Source the common init script
  29 . @sysconfdir@/zfs/zfs-functions
  30
  31 ZED_NAME="zed"
  32 ZED_PIDFILE="@runstatedir@/$ZED_NAME.pid"
  33
  34 # shellcheck disable=SC2034
  35 extra_started_commands="reload"
  36
  37 # Exit if the package is not installed
  38 [ -x "$ZED" ] || exit 0
  39
  40 # ----------------------------------------------------
  41
  42 do_depend()
  43 {
  44         after zfs-mount localmount
  45 }
  46
  47 do_start()
  48 {
  49         check_module_loaded "zfs" || exit 0
  50
  51         ZED_ARGS="$ZED_ARGS -p $ZED_PIDFILE"
  52
  53         zfs_action "Starting ZFS Event Daemon" zfs_daemon_start \
  54             "$ZED_PIDFILE" "$ZED" "$ZED_ARGS"
  55         return "$?"
  56 }
  57
  58 do_stop()
  59 {
  60         local pools
  61         check_module_loaded "zfs" || exit 0
  62
  63         zfs_action "Stopping ZFS Event Daemon" zfs_daemon_stop \
  64            "$ZED_PIDFILE" "$ZED" "$ZED_NAME" || return "$?"
  65
  66         # Let's see if we have any pools imported
  67         pools=$("$ZPOOL" list -H -oname)
  68         if [ -z "$pools" ]
  69         then
  70                 # No pools imported, it is/should be safe/possible to
  71                 # unload modules.
  72                 zfs_action "Unloading modules" rmmod zfs spl
  73                 return "$?"
  74         fi
  75 }
  76
  77 do_status()
  78 {
  79         check_module_loaded "zfs" || exit 0
  80
  81         zfs_daemon_status "$ZED_PIDFILE" "$ZED" "$ZED_NAME"
  82         return "$?"
  83 }
  84
  85 do_reload()
  86 {
  87         check_module_loaded "zfs" || exit 0
  88
  89         zfs_action "Reloading ZFS Event Daemon" zfs_daemon_reload \
  90             "$ZED_PIDFILE" "$ZED_NAME"
  91         return "$?"
  92 }
  93
  94 # ----------------------------------------------------
  95
  96 if @IS_SYSV_RC@
  97 then
  98         case "$1" in
  99                 start)
 100                         do_start
 101                         ;;
 102                 stop)
 103                         do_stop
 104                         ;;
 105                 status)
 106                         do_status
 107                         ;;
 108                 reload|force-reload)
 109                         do_reload
 110                         ;;
 111                 restart)
 112                         do_stop
 113                         do_start
 114                         ;;
 115                 *)
 116                         [ -n "$1" ] && echo "Error: Unknown command $1."
 117                         echo "Usage: $0 {start|stop|status|reload|restart}"
 118                         exit 1
 119                         ;;
 120         esac
 121
 122         exit $?
 123 else
 124         # Create wrapper functions since Gentoo don't use the case part.
 125         depend() { do_depend; }
 126         start() { do_start; }
 127         stop() { do_stop; }
 128         status() { do_status; }
 129         reload() { do_reload; }
 130 fi