makevirt

#!/bin/bash

# TODO: This script needs arguments; for now you just have to change these constants by hand.

NAME=c7test
DISK=/staging/osg-images/centos_7_x86_64_htcondor.dsk
TESTDISK=/dev/shm/c7test.dsk
INPUTDISK=~/input-image-000.qcow2

prog=${0##*/}

fail () {
    echo "$prog: $*" >&2
    exit 1
}

is_true () {
    case "${1-}" in
        [yY]*|[tT]*|1|*true) return 0 ;;
        [nN]*|[fF]*|0|*false) return 1 ;;
    esac
    return 2  # unknown
}

set -o nounset
set -o pipefail
IFS=$'\n\t'
is_true "${DEBUG-}" && export PS4='${LINENO}: ' && set -x  # https://stackoverflow.com/a/17805088


command -v virt-install &>/dev/null  ||  fail virt-install not found
command -v virsh &>/dev/null  ||  fail virsh not found

if sudo virsh list --all | grep -F $NAME; then
    echo Shutting down
    sudo virsh destroy $NAME
    sudo virsh undefine $NAME
fi


cp -f $DISK $TESTDISK

sudo virt-install  --debug  \
    --name c7test  \
    --connect qemu:///system  \
    --console pty  \
    --disk path=$TESTDISK  \
    --graphics vnc \
    --import  \
    --network network=default  \
    --os-type linux  \
    --os-variant rhel7-unknown  \
    --ram 2048  \
    --vcpus 1  \
    --virt-type kvm  \
    \
    --print-xml  > c7test.xml


# Add the second disk

cp -f "$INPUTDISK" /dev/shm/c7test-input.qcow2

python3 <<TLDR
import xml.etree.ElementTree as ET
tree = ET.parse("c7test.xml")
root = tree.getroot()
devices = root.find("devices")
newdisk = ET.SubElement(devices, "disk", attrib={"type": "file", "device": "disk"})
ET.SubElement(newdisk, "driver", attrib={"name": "qemu", "type": "qcow2"})
ET.SubElement(newdisk, "source", attrib={"file": "/dev/shm/c7test-input.qcow2"})
ET.SubElement(newdisk, "target", attrib={"dev": "vdb", "bus": "virtio"})
tree.write("c7test.xml")
TLDR

sudo virsh define c7test.xml
sudo virsh start c7test

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