xendomains.sh

   1 #!/bin/bash
   2
   3 if ! [ -e /proc/xen/privcmd ]; then
   4         exit 0
   5 fi
   6
   7 TOOLSTACK=$(/usr/lib/xen/bin/xen-toolstack toolstack 2>/dev/null)
   8 if [ $? -ne 0 ]; then
   9         echo "No usable Xen toolstack selected"
  10         exit 0
  11 fi
  12 if [ "$(basename "$TOOLSTACK")" != xl ] && [ "$(basename "$TOOLSTACK")" != xm ]; then
  13         exit 0
  14 fi
  15
  16 if ! /usr/lib/xen/bin/xen-toolstack list >/dev/null 2>&1 ; then
  17         exit 0;
  18 fi
  19
  20 [ -r /etc/sysconfig/xendomains ] && . /etc/sysconfig/xendomains
  21
  22 shopt -s nullglob
  23
  24 check_config_name()
  25 {
  26         /usr/lib/xen/bin/xen-toolstack create --quiet --dryrun --defconfig "$1" | sed -n 's/^.*\("name":"\([^"]*\)",.*\)\|(name \(.*\))$/\2\3/p'
  27 }
  28
  29 check_running()
  30 {
  31         /usr/lib/xen/bin/xen-toolstack domid "$1" >/dev/null 2>&1
  32         return $?
  33 }
  34
  35 timeout_coproc()
  36 {
  37         local TIMEOUT=$1
  38         shift
  39
  40         coproc "$@" >/dev/null 2>&1
  41
  42         local COPROC_OUT
  43         exec {COPROC_OUT}<&"${COPROC[0]}"
  44         local PID="$COPROC_PID"
  45
  46         for no in $(seq 0 $TIMEOUT); do
  47                 if [ -z "$COPROC_PID" ]; then break; fi
  48                 sleep 1
  49         done
  50
  51         kill -INT "$COPROC_PID" >/dev/null 2>&1
  52         wait $PID
  53         local rc=$?
  54         if [ $rc -eq 0 ]; then
  55                 echo "ok"
  56         else
  57                 echo "fail ($rc)"
  58         fi
  59
  60         [ $rc -gt 0 ] && cat <&$COPROC_OUT
  61         exec <&$COPROC_OUT-
  62 }
  63
  64 timeout_domain()
  65 {
  66         name="$1"
  67         TIMEOUT="$2"
  68         for no in $(seq 0 $TIMEOUT); do
  69                 if ! check_running "$name"; then return 0; fi
  70                 sleep 1
  71         done
  72         return 1
  73 }
  74
  75 do_start_restore()
  76 {
  77         [ -n "$XENDOMAINS_SAVE" ] || return
  78         [ -d "$XENDOMAINS_SAVE" ] || return
  79         [ -n "$XENDOMAINS_RESTORE" ] || return
  80
  81         for file in $XENDOMAINS_SAVE/*; do
  82                 if [ -f $file ] ; then
  83                         name="${file##*/}"
  84                         echo -n "Restoring Xen domain $name (from $file): "
  85
  86                         out=$(/usr/lib/xen/bin/xen-toolstack restore "$file" >/dev/null 2>&1)
  87                         case "$?" in
  88                                 0)
  89                                         rm "$file"
  90                                         domains[$name]='started'
  91                                         echo "ok"
  92                                         ;;
  93                                 *)
  94                                         domains[$name]='failed'
  95                                         echo "fail"
  96                                         echo "$out"
  97                                         ;;
  98                         esac
  99                 fi
 100         done
 101 }
 102
 103 do_start_auto()
 104 {
 105         [ -n "$XENDOMAINS_AUTO" ] || return
 106         [ -d "$XENDOMAINS_AUTO" ] || return
 107
 108         for file in $XENDOMAINS_AUTO/*; do
 109                 name="$(check_config_name $file)"
 110
 111                 if [ "${domains[$name]}" = started ]; then
 112                         :
 113                 elif check_running "$name"; then
 114                         echo "Xen domain $name already running"
 115                 else
 116                         echo -n "Starting Xen domain $name (from $file): "
 117
 118                         if [ "${domains[$name]}" = failed ]; then
 119                                 echo "fail"
 120                         else
 121                                 out=$(/usr/lib/xen/bin/xen-toolstack create --quiet --defconfig "$file" >/dev/null 2>&1)
 122                                 case "$?" in
 123                                         0)
 124                                                 echo "ok"
 125                                                 ;;
 126                                         *)
 127                                                 echo "fail"
 128                                                 echo "$out"
 129                                                 ;;
 130                                 esac
 131                         fi
 132                 fi
 133         done
 134 }
 135
 136 do_start()
 137 {
 138         declare -A domains
 139
 140         do_start_restore
 141         do_start_auto
 142 }
 143
 144 do_stop_migrate()
 145 {
 146         [ -n "$XENDOMAINS_MIGRATE" ] || return
 147
 148         while read id name rest; do
 149                 echo -n "Migrating Xen domain $name ($id): "
 150                 (timeout_coproc "$XENDOMAINS_STOP_MAXWAIT" /usr/lib/xen/bin/xen-toolstack migrate $id $XENDOMAINS_MIGRATE)
 151         done < <(/usr/lib/xen/bin/xen-init-list)
 152 }
 153
 154 do_stop_save()
 155 {
 156         [ -n "$XENDOMAINS_SAVE" ] || return
 157         [ -d "$XENDOMAINS_SAVE" ] || mkdir -m 0700 -p "$XENDOMAINS_SAVE"
 158
 159         while read id name rest; do
 160                 echo -n "Saving Xen domain $name ($id): "
 161                 (timeout_coproc "$XENDOMAINS_STOP_MAXWAIT" /usr/lib/xen/bin/xen-toolstack save $id $XENDOMAINS_SAVE/$name)
 162         done < <(/usr/lib/xen/bin/xen-init-list)
 163 }
 164
 165 do_stop_shutdown()
 166 {
 167         while read id name rest; do
 168                 echo -n "Shutting down Xen domain $name ($id): "
 169                 /usr/lib/xen/bin/xen-toolstack shutdown $id >/dev/null 2>&1
 170                 rc=$?
 171                 if [ $rc -eq 0 ]; then
 172                         echo "ok"
 173                 else
 174                         echo "fail ($rc)"
 175                 fi
 176         done < <(/usr/lib/xen/bin/xen-init-list)
 177         while read id name rest; do
 178                 echo -n "Waiting for Xen domain $name ($id) to shut down: "
 179                 timeout_domain "$name" "$XENDOMAINS_STOP_MAXWAIT"
 180                 rc=$?
 181                 if [ $rc -eq 0 ]; then
 182                         echo "ok"
 183                 else
 184                         echo "fail ($rc)"
 185                 fi
 186         done < <(/usr/lib/xen/bin/xen-init-list)
 187 }
 188
 189 do_stop()
 190 {
 191         do_stop_migrate
 192         do_stop_save
 193         do_stop_shutdown
 194 }
 195
 196 case "$1" in
 197         start)
 198                 do_start
 199                 ;;
 200         stop)
 201                 do_stop
 202                 ;;
 203         restart)
 204                 do_stop
 205                 do_start
 206                 ;;
 207         reload|force-reload)
 208                 do_stop
 209                 do_start
 210                 ;;
 211         status)
 212                 /usr/lib/xen/bin/xen-toolstack list -v
 213                 ;;
 214         *)
 215                 echo "Usage: $0 {start|stop|status|restart|reload|force-reload}"
 216                 exit 3
 217                 ;;
 218 esac
 219
 220 exit 0