174 lines
6 KiB
Bash
Executable file
174 lines
6 KiB
Bash
Executable file
#!/usr/bin/bash
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# create and run clone
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set -eu
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show_help() {
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cat << EOF >&2
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Usage: $(basename "$0") [-n] vmname"
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Create a new clone, start the vm (if not yet running) and run virt-viewer.
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Squid-Proxy will be started too.
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-n new clone will be created, even if exists
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-p new clone will be created persistent, so available after reboot too
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-s qemu:///system instead of default qemu:///session
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EOF
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}
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exit_script() {
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echo "run-vm.sh ${VM_NAME} terminated by trap!" >> "/tmp/${UID}/exit-run-vm.log"
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virsh --connect="${QEMU}" destroy "${VM_NAME}-clone"
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trap - SIGHUP SIGINT SIGTERM # clear the trap
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kill -- -$$ # Sends SIGTERM to child/sub processes
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}
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check_images() {
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# sync vm-torrents and machine definition file
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sudo -u lmnsynci /usr/local/bin/vm-sync get_file "${VM_NAME}.xml" "${VM_NAME}.qcow2.torrent"
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[[ -f "${VM_NAME}" ]] && sudo -u lmnsynci /usr/local/bin/vm-sync delete_outdated_image "${VM_NAME}.qcow2"
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BACKINGARRAY=()
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imgfile="${VM_SYSDIR}/${VM_NAME}.qcow2" && [[ -f "${VM_DIR}/${VM_NAME}.qcow2" ]] && imgfile="${VM_DIR}/${VM_NAME}.qcow2"
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BACKINGARRAY+=("${imgfile}")
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echo "Imgfile=$imgfile"
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if [[ ! -f "${imgfile}" ]] || ! qemu-img info -U "${imgfile}" | grep "file format: qcow2"; then
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if [[ ! -f "${VM_SYSDIR}/${VM_NAME}.qcow2.torrent" ]]; then
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echo "no base VM disk '${VM_NAME}.qcow2' found and/or ${VM_NAME} not found on server" >&2
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exit 1
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fi
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# sync vm-disk image by torrent
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echo "Try to sync VM ${VM_NAME} by torrent"
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sudo -u lmnsynci /usr/local/bin/vm-sync get_image "${VM_NAME}"
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fi
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backingfile=$(qemu-img info -U "${imgfile}" | grep "^backing file:" | cut -d ' ' -f 3)
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while [[ -n "${backingfile}" ]]; do
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echo "Backingfile required: ${backingfile}"
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imgfile="${VM_SYSDIR}/${backingfile}" && [[ -f "${VM_DIR}/${backingfile}" ]] && imgfile="${VM_DIR}/${backingfile}"
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BACKINGARRAY+=("${imgfile}")
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if [[ ! -f "${imgfile}" ]] || ! qemu-img info -U "${imgfile}" | grep "file format: qcow2"; then
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# sync vm-disk image by torrent
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echo "Try to sync backingfile ${backingfile} by torrent"
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sudo -u lmnsynci /usr/local/bin/vm-sync get_file "${backingfile}.torrent"
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[[ -f "${backingfile}" ]] && sudo -u lmnsynci /usr/local/bin/vm-sync delete_outdated_image "${backingfile}"
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sudo -u lmnsynci /usr/local/bin/vm-sync get_image "${backingfile%.qcow2}"
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fi
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backingfile=$(qemu-img info -U "${imgfile}" | grep "^backing file:" | cut -d ' ' -f 3)
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done
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echo "VM-Image and required backingfiles available"
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echo "Now, let's check the images."
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# Check VM-Images in reverse order
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for ((i=${#BACKINGARRAY[@]}-1; i>=0; i--))
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do
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echo "Checking ${BACKINGARRAY[$i]}"
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if ! qemu-img check -U "${BACKINGARRAY[$i]}" 2>/dev/null; then
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echo "check failed!"
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echo "sync ${BACKINGARRAY[$i]} again"
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sudo -u lmnsynci /usr/local/bin/vm-sync get_image "$(basename "${BACKINGARRAY[$i]}" .qcow2)"
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fi
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done
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echo "VM-Image and required backingfiles available and checked"
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}
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create_clone() {
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local VM_NAME="$1"
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local VM_XML="${VM_DIR}/${VM_NAME}-clone.xml"
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if ! [[ -f "${VM_SYSDIR}/${VM_NAME}.xml" && -f "${VM_SYSDIR}/${VM_NAME}.qcow2" ]] && ! [[ -f "${VM_DIR}/${VM_NAME}.xml" && -f "${VM_DIR}/${VM_NAME}.qcow2" ]]; then
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echo "xml or qcow2 File does not exists." >&2
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exit 1
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fi
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# Create User-VM-Dir and link system VM-Images
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[[ -d "${VM_DIR}" ]] || mkdir -p "${VM_DIR}"
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if [[ "${PERSISTENT}" -eq 1 ]]; then
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sudo /usr/local/bin/vm-link-images -p
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else
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sudo /usr/local/bin/vm-link-images
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fi
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# Create backing file
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cd "${VM_DIR}"
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qemu-img create -f qcow2 -F qcow2 -b "${VM_NAME}.qcow2" "${VM_NAME}-clone.qcow2"
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# Create machine-definition-file
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cp "${VM_DIR}/${VM_NAME}.xml" "${VM_XML}"
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# set VM_DIR:
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sed -i "s:VMIMAGEDIR:${VM_DIR}:" "${VM_XML}"
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# and actually rename the vm (this also updates part of the storage path):
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sed -i "s/${VM_NAME}/${VM_NAME}-clone/" "${VM_XML}"
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# set virtiofs-Socket
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sed -i "s:VIRTIOFSSOCKET:/run/user/${UID}/virtiofs-${VM_NAME}.sock:" "${VM_XML}"
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# find macvtap interface MAC address:
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MAC="$(ip link | grep -A1 "vm-macvtap" |
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sed -nE "s%\s+link/ether ([[:xdigit:]:]{17}) .+%\1%p")"
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sed -i -E -e "s/MACMACVTAP/$MAC/" "${VM_XML}"
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}
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QEMU='qemu:///session'
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NEWCLONE=0
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PERSISTENT=0
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source /etc/lmn/vm.conf
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while getopts ':pns' OPTION; do
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case "$OPTION" in
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p)
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PERSISTENT=1
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VM_DIR="${VM_DIR_PERSISTENT}"
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;;
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n)
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NEWCLONE=1
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;;
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s)
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QEMU='qemu:///system'
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;;
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?)
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show_help
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exit 1
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;;
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esac
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done
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shift "$((OPTIND -1))"
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# if less than one arguments supplied, display usage
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if [[ $# -ne 1 ]] ; then
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show_help
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exit 1
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fi
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VM_NAME=$1
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# check, if we have to start squid
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if ! killall -s 0 squid; then
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echo "starting squid."
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/usr/sbin/squid -f /etc/squid/squid-usermode.conf
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fi
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# because virsh has problems with long pathnames, using diffent configdir
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export XDG_CONFIG_HOME="/tmp/${UID}/.config"
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if ! virsh --connect="${QEMU}" list | grep "${VM_NAME}-clone"; then
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echo "VM not yet running."
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sudo /usr/local/bin/desktop-sync
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check_images
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if [[ "${NEWCLONE}" = 1 ]] || [[ ! -f "${VM_DIR}/${VM_NAME}-clone.qcow2" ]]; then
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create_clone "${VM_NAME}"
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fi
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# delete the old vm
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virsh --connect=qemu:///session undefine "${VM_NAME}-clone" || echo "${VM_NAME}-clone did not exist"
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# finally, create the new vm
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virsh --connect=qemu:///session define "${VM_DIR}/${VM_NAME}-clone.xml"
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#trap exit_script SIGHUP SIGINT SIGTERM
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[[ "${QEMU}" = 'qemu:///session' ]] && sudo /usr/local/bin/vm-virtiofsd "${VM_NAME}"
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virsh --connect="${QEMU}" start "${VM_NAME}-clone"
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fi
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echo "starting viewer"
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trap exit_script SIGHUP SIGINT SIGTERM
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virt-viewer --connect="${QEMU}" --full-screen "${VM_NAME}-clone"
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