#!/usr/bin/env bash

# ``stop-base`` handles bringing down the base DevStack more gently
# than unstack.sh.  We want to save the data so that it can be
# restarted under the target DevStack.  This leaves /opt/stack/<base>/data
# in a state where it can be copied to the target directory.


# Keep track of the devstack directory
GRENADE_DIR=$(cd $(dirname "$0") && pwd)

# Import common functions
source $GRENADE_DIR/functions

# Determine what system we are running on.  This provides ``os_VENDOR``,
# ``os_RELEASE``, ``os_UPDATE``, ``os_PACKAGE``, ``os_CODENAME``
# and ``DISTRO``
GetDistro

# Source params
source $GRENADE_DIR/grenaderc

# For debugging
set -o xtrace

# Duplicate some setup bits from base DevStack
source $BASE_DEVSTACK_DIR/stackrc
DATA_DIR=${STACK_ROOT}/data

source $BASE_DEVSTACK_DIR/lib/cinder


# Shut down running processes in screen - most of them
SCREEN=$(which screen)
if [[ -n "$SCREEN" ]]; then
    SESSION=$(screen -ls | awk '/[0-9].stack/ { print $1 }')
    if [[ -n "$SESSION" ]]; then
        screen -X -S $SESSION quit
    fi
fi

# Swift runs daemons
if is_service_enabled swift; then
    swift-init all stop 2>/dev/null || true
fi

# Handle iSCSI targets here...don't delete, just stop
if [[ "$os_PACKAGE" = "deb" ]]; then
    stop_service tgt
else
    stop_service tgtd
fi

# Unplumb the LVM backing file
sudo vgchange -a n stack-volumes
DEV=$(sudo losetup -j $DATA_DIR/${VOLUME_GROUP}-backing-file | awk -F':' '/backing-file/ { print $1 }')

if [[ "x" != "x$DEV" ]]; then
    sudo losetup -d $DEV
else
    echo "No device for backing volume"
fi
    # Unplumb the Swift data
sudo umount ${DATA_DIR}/swift/drives/images/swift.img || /bin/true