99 lines
2.1 KiB
Bash
Executable File
99 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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set -eu
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build_dir="${build_dir:-/tmp/nixos-vm}"
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mount_point="${mount_point:-/tmp/fs}"
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qcow2="${qcow2:-${build_dir}/$(hostname -s).qcow2}"
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echo "[+] configuration:"
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echo " build dir: ${build_dir}"
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echo " mount point: ${mount_point}"
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echo " image: ${qcow2}"
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build_nixos_vm () {
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echo "[+] updating NixOS config"
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cd /etc/nixos
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doas git pull --rebase local master
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if [[ -d "${build_dir}" ]]
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then
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echo "[+] removing ${build_dir}"
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sleep 2
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rm -r "${build_dir}"
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fi
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mkdir "${build_dir}"
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cd "${build_dir}"
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nixos-rebuild build-vm
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echo "[+] Spinning up VM; kill it when you see the line"
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echo " 'Virtualisation disk image created.'"
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"${build_dir}/result/bin/run-$(hostname -s)-vm"
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doas qemu-img resize "${qcow2}" 256G
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doas modprobe nbd max_part=8
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echo "[+] connecting to network block driver"
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echo " note: on failure, you may need to manually run"
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echo " doas qemu-nbd --disconnect /dev/nbd0"
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doas qemu-nbd --connect=/dev/nbd0 ${qcow2}
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if [[ -d "${mount_point}" ]]
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then
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echo "[+] removing ${mount_point}"
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sleep 2
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rm -r "${mount_point}"
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fi
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mkdir -p "${mount_point}"
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doas mount /dev/nbd0 "${mount_point}"
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rsync --progress -auvz "${HOME}/" "${mount_point}/home/kyle/"
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echo "[+] finished, cleaning up"
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doas umount "${mount_point}"
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doas qemu-nbd --disconnect /dev/nbd0
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doas rmdir "${mount_point}"
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doas rm -r "${build_dir}"
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}
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cleanup () {
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if [[ -d "${build_dir}" ]]
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then
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echo "[+] removing ${build_dir}"
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sleep 2
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rm -r "${build_dir}"
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fi
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if [[ ! -z "$(mount | grep /dev/nbd0)" ]]
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then
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echo "[+] unmounting network block device"
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doas umount /dev/nbd0
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fi
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echo "[+] disconnecting network block device"
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echo " it's okay if this fails"
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doas qemu-nbd --disconnect /dev/nbd0
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if [[ -d "${mount_point}" ]]
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then
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echo "[+] removing ${mount_point}"
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sleep 2
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rm -r "${mount_point}"
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fi
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}
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case "${1:-build}" in
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build)
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build_nixos_vm
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;;
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cleanup)
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cleanup
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;;
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*)
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echo "[!] Valid commands are build, cleanup"
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exit 1
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;;
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esac
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