#!/bin/bash # # Copyright (C) 2011 Google Inc. # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are # met: # # 1. Redistributions of source code must retain the above copyright notice, # this list of conditions and the following disclaimer. # # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS # IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR # PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF # LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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"