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.

INSTANCE="$1"

SOCAT="$2"

MONITOR="$3"

PARAMS="$4"

CONSOLE="$5"

unpause() {

  echo "info status" |

    "$SOCAT" STDIO "UNIX-CONNECT:$MONITOR" 2>/dev/null |

    grep -q '^VM status: paused' || return

  # As there is no way to be sure when the main socat has actually connected to

  # the instance console, 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"

  echo "c" | "$SOCAT" STDIO "UNIX-CONNECT:$MONITOR" &>/dev/null

}

unpause &

"$SOCAT" "$PARAMS" "$CONSOLE"