Synnefo » snf-ganeti

#!/bin/bash

#

# Copyright (C) 2011 Google Inc.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

XEN_CMD="$1"

INSTANCE="$2"

unpause() {

  ispaused=$(xm list -l "$INSTANCE" 2>/dev/null |

             sed -n 's/^[[:blank:]]*(state ..\(.\)...)/\1/p')

  [[ "$ispaused" == "p" ]] || return

  # As there is no way to be sure when xm console has actually connected to the

  # instance, sleep for a few seconds before unpausing the instance. This is a

  # tradeoff between missing some console output if the node is overloaded and

  # making the user wait everytime when the node isn't so busy.

  sleep 3

  # Send \r\n after notice as terminal is in raw mode

  printf "Instance $INSTANCE is paused, unpausing\r\n"

  xm unpause "$INSTANCE"

}

unpause &

exec $XEN_CMD console "$INSTANCE"