Laboratoire de l'Informatique et du Parallélisme » CIAB

#! /bin/bash

#

# Stop and delete a node

#

# Get the directory of the script.

SCRIPT_PATH=`dirname $0`

# Get the script name.

SCRIPT_NAME=`basename $0`

if [ "x$1" == "x" ]

  then

    echo

    echo Missing parametre. Aborting!

    echo

    echo Usage: $SCRIPT_NAME node_number

    echo

    exit 1

  else

    NODE_NUMBER=$(($1))

    NODE_NUMBER_STRING=$NODE_NUMBER

    while [ ${#NODE_NUMBER_STRING} -lt 3 ]

      do

        NODE_NUMBER_STRING="0$NODE_NUMBER_STRING"

    done

fi

# Source the common configuration variables.

. $SCRIPT_PATH/c-i-a-b.common

#

# Check that the virtual machine exists.

#

CURRENT_HOST_NAME=${COMPUTE_NODE_NAME_PREFIX}${NODE_NUMBER_STRING}

IS_RUNNING=`xm list | grep $CURRENT_HOST_NAME`

if [ -z "$IS_RUNNING" ]

  then

    echo

    echo The \"$CURRENT_HOST_NAME\" domU does not exist. Aborting!

    echo

    exit 1

fi

#

# Stop the virutal machine

#

xm shutdown $CURRENT_HOST_NAME

IS_RUNNING=1

while [ -n "$IS_RUNNING" ]

  do

    IS_RUNNING=`xm list | grep $CURRENT_HOST_NAME`

    echo waiting for $CURRENT_HOST_NAME to shutdown...

    sleep 4

done

# If necessary, unmount the mounted disks

if [ -f $COMPUTE_NODE_DISK_MOUNT_POINT/etc/network/interfaces ]

  then 

    umount -f $COMPUTE_NODE_DISK_MOUNT_POINT

fi

# Delete the swap disk.

COMPUTE_NODE_SWAP_DISK="${SWAP_DISK_PREFIX}${NODE_NUMBER_STRING}${SWAP_DISK_POSTFIX}"

lvremove -f $SWAP_DISK_LOGICAL_VOLUME/$COMPUTE_NODE_SWAP_DISK

# Delete the system disk

COMPUTE_NODE_SYSTEM_DISK="${SYSTEM_DISK_CLONE_PREFIX}${NODE_NUMBER_STRING}${SYSTEM_DISK_CLONE_POSTFIX}"

lvremove -f $SYSTEM_DISK_LOGICAL_VOLUME/$COMPUTE_NODE_SYSTEM_DISK