devstack/tools/xen/prepare_guest_template.sh
Bob Ball 60fcfb5c91 XenAPI: Fix bug with Xen ext4-using guests
Ubuntu saucy is using ext4, which means it hits a barrier
bug with certain versions of Xen, leading to a read only
filesystem.

This is bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/824089

Change-Id: I9a72b203d473dc555324d44ad7c240c80dccda15
2013-12-23 17:23:47 +00:00

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#!/bin/bash
# This script is run by install_os_domU.sh
#
# Parameters:
# - $GUEST_NAME - hostname for the DomU VM
#
# It modifies the ubuntu image created by install_os_domU.sh
#
# This script is responsible for cusomtizing the fresh ubuntu
# image so on boot it runs the prepare_guest.sh script
# that modifies the VM so it is ready to run stack.sh.
# It does this by mounting the disk image of the VM.
#
# The resultant image is started by install_os_domU.sh,
# and once the VM has shutdown, build_xva.sh is run
set -o errexit
set -o nounset
set -o xtrace
# This directory
TOP_DIR=$(cd $(dirname "$0") && pwd)
# Include onexit commands
. $TOP_DIR/scripts/on_exit.sh
# Source params - override xenrc params in your localrc to suite your taste
source xenrc
#
# Parameters
#
GUEST_NAME="$1"
# Mount the VDI
STAGING_DIR=$($TOP_DIR/scripts/manage-vdi open $GUEST_NAME 0 1 | grep -o "/tmp/tmp.[[:alnum:]]*")
add_on_exit "$TOP_DIR/scripts/manage-vdi close $GUEST_NAME 0 1"
# Make sure we have a stage
if [ ! -d $STAGING_DIR/etc ]; then
echo "Stage is not properly set up!"
exit 1
fi
# Copy XenServer tools deb into the VM
ISO_DIR="/opt/xensource/packages/iso"
XS_TOOLS_FILE_NAME="xs-tools.deb"
XS_TOOLS_PATH="/root/$XS_TOOLS_FILE_NAME"
if [ -e "$ISO_DIR" ]; then
TOOLS_ISO=$(ls -1 $ISO_DIR/xs-tools-*.iso | head -1)
TMP_DIR=/tmp/temp.$RANDOM
mkdir -p $TMP_DIR
mount -o loop $TOOLS_ISO $TMP_DIR
DEB_FILE=$(ls $TMP_DIR/Linux/*amd64.deb)
echo "Copying XenServer tools into VM from: $DEB_FILE"
cp $DEB_FILE "${STAGING_DIR}${XS_TOOLS_PATH}"
umount $TMP_DIR
rm -rf $TMP_DIR
else
echo "WARNING: no XenServer tools found, falling back to 5.6 tools"
TOOLS_URL="https://github.com/downloads/citrix-openstack/warehouse/xe-guest-utilities_5.6.100-651_amd64.deb"
wget $TOOLS_URL -O $XS_TOOLS_FILE_NAME
cp $XS_TOOLS_FILE_NAME "${STAGING_DIR}${XS_TOOLS_PATH}"
rm -rf $XS_TOOLS_FILE_NAME
fi
# Copy prepare_guest.sh to VM
mkdir -p $STAGING_DIR/opt/stack/
cp $TOP_DIR/prepare_guest.sh $STAGING_DIR/opt/stack/prepare_guest.sh
# backup rc.local
cp $STAGING_DIR/etc/rc.local $STAGING_DIR/etc/rc.local.preparebackup
# run prepare_guest.sh on boot
cat <<EOF >$STAGING_DIR/etc/rc.local
#!/bin/sh -e
bash /opt/stack/prepare_guest.sh \\
"$GUEST_PASSWORD" "$XS_TOOLS_PATH" "$STACK_USER" \\
> /opt/stack/prepare_guest.log 2>&1
EOF
# Need to set barrier=0 to avoid a Xen bug
# https://bugs.launchpad.net/ubuntu/+source/linux/+bug/824089
sed -i -e 's/errors=/barrier=0,errors=/' $STAGING_DIR/etc/fstab