From f759784652ff8495f396e140b8238cedb8c8a696 Mon Sep 17 00:00:00 2001
From: jalr <mail@jalr.de>
Date: Thu, 1 Mar 2018 19:49:58 +0100
Subject: [PATCH 1/4] Add lvm

---
 packer/debian-stretch.json |   8 +-
 packer/initramfs/labsync   | 273 +++++++++++++++++++------------------
 2 files changed, 144 insertions(+), 137 deletions(-)

diff --git a/packer/debian-stretch.json b/packer/debian-stretch.json
index 392c70a..298fcff 100644
--- a/packer/debian-stretch.json
+++ b/packer/debian-stretch.json
@@ -29,6 +29,12 @@
       "source": "initramfs/labsync",
       "destination": "/etc/initramfs-tools/scripts/"
     },
+    {
+      "type": "shell",
+      "inline": [
+        "sed -i 's/@@CI_REPOSITORY_URL@@/{{user `ci_repository_url`}}/' /etc/initramfs-tools/scripts/labsync"
+      ]
+    },
     {
       "type": "file",
       "source": "initramfs/labsync-prereqs",
@@ -44,7 +50,7 @@
         "echo \"commit ref slug: {{user `ci_commit_ref_slug`}}\" >> /.build-info",
         "apt-get update",
         "apt-get -y dist-upgrade",
-        "apt-get -y install aria2 initramfs-tools linux-image-amd64 openssh-server python",
+        "apt-get -y install aria2 initramfs-tools linux-image-amd64 lvm2 openssh-server python",
         "echo 'RESUME=none' > /etc/initramfs-tools/conf.d/resume",
         "echo squashfs >> /etc/initramfs-tools/modules",
         "echo overlay >> /etc/initramfs-tools/modules",
diff --git a/packer/initramfs/labsync b/packer/initramfs/labsync
index bad7984..6c1787e 100755
--- a/packer/initramfs/labsync
+++ b/packer/initramfs/labsync
@@ -1,152 +1,153 @@
 #!/bin/sh
 
-labsync_mount_root() {
-	##
-	# FUNCTION DEFINITIONS
-	##
+labsync_create_or_resize_lv() {
+	vg="$1"
+	lv="$2"
+	new_size_bytes="$3"
+	minimum_size_bytes="$4"
+	current_lv_size_bytes="$(lvm lvs "$vg/$lv" -o LV_SIZE --noheadings --units b --nosuffix 2>/dev/null | sed 's/\s//g')"
 
-	print_waiting() {
-		echo -en "\033[36m${1}... \033[0m"
-	}
-
-	print_warning() {
-		echo -e "\n\033[31mWARNING: ${1}\033[0m"
-	}
-
-	print_done() {
-		echo -e "\033[32mdone.\033[0m"
-	}
-
-	error_fatal() {
-		print_warning "$1; interrupting startup"
-		while sleep 3600;do sleep 3600;done
-	}
-
-	##
-	# SHOW BRANDING
-	##
-
-	echo -e '
-	Starting
-	 ""#           #
-	   #     mmm   #mmm    mmm   m   m  m mm    mmm
-	   #    "   #  #" "#  #   "  "m m"  #"  #  #"  "
-	   #    m"""#  #   #   """m   #m#   #   #  #
-	   "mm  "mm"#  ##m#"  "mmm"   "#    #   #  "#mm"
-								  m"
-								 ""
-	https://gitlab.jalr.de/fablab/initramfs
-	'
-
-	# Check if mandatory parameters are missing
-
-	if [ -z "$disk" ];then
-		error_fatal "The disk parameter is missing"
+	if [ -z "$current_lv_size_bytes" ]; then
+		# no size returned, it's likely that lv doesn't exist
+		lvm lvcreate -L ${new_size_bytes}b -n "$lv" "$vg"
+	elif [ "$minimum_size_bytes" != "" ] && [ $minimum_size_bytes -gt 0 ]; then
+		# lv already exists
+		if [ $current_lv_size_bytes -lt $minimum_size_bytes ]; then
+			lvm lvextend -L ${new_size_bytes}b "$vg/$lv"
+		fi
 	fi
-	if [ -z "$partsize" ];then
-		error_fatal "The partsize parameter is missing"
-	fi
-	if [ -z "$torrent" ];then
-		error_fatal "The torrent parameter is missing"
-	fi
-	if [ -z "$torrent_file" ];then
-		error_fatal "The torrent_file parameter is missing"
-	fi
-	print_done
+}
 
-	##
-	# PARTITIONING OF DISK
-	##
-
-	size_part_1=$(($partsize * 1024 * 1024 / 512))
-
-	parttable="label: dos
-	label-id: 0xdeadbeef
-	device: $disk
-	unit: sectors
-
-	$root : start=        2048, size=     $size_part_1, type=83"
-
-	readtable="$(sfdisk -d $disk)" # wtf? but it is needed
-
-	print_waiting "Checking partition tables"
-	if [ "$parttable" != "$readtable" ];then
-		print_done
-		print_waiting "Partition tables do not match; partitioning disk"
-		rewrite_rootfs=true
-	sfdisk -q $disk << PARTTABLE
-	$parttable
-PARTTABLE
-		print_done
-	else
-		print_done
-	fi
-
-	##
-	# TEMPORARY NETWORK CONFIG (only for qemu)
-	##
-
-	configure_networking
-
-	#if ! [ -z "$qemu" ];then
-	#	print_waiting "Setting up temporary network config"
-	#	ip addr add 10.2.2.2/24 dev ens3
-	#	ip link set ens3 up
-	#	print_done
-	#else
-	#	print_waiting "Setting up interfaces with DHCP"
-	#	ipconfig all
-	#	print_done
-	#fi
-
-	##
-	# DOWNLOAD SQUASHFS
-	##
-
-	print_waiting "Downloading root filesystem image via $torrent"
-	# --allow-overwrite: do not rename the torrent file
-	# --check-integrity: verify downloaded file and do not complain about missing controll file
-	# --seed-time=0: do not wait until ratio 1, we seed when we’re booted
-	# --summary-interval=0: do not show summary while downloading
-	# --console-log-level=error: Only show errors
-	# --download-result=hide: Do not show download results
-	ip a
-	sleep 1
-
-	#wget -O /tmp/torrent "$torrent"
-
-	(cd /tmp
-		ln -s "${disk}1" "$torrent_file"
-		aria2c \
-			--allow-overwrite \
-			--check-integrity \
-			--seed-time=0 \
-			--summary-interval=10 \
-			--file-allocation=none \
-			--enable-dht=false \
-			"$torrent"
-	)
-	print_done
-
-	modprobe overlay
-	mkdir -p /root
-	mkdir /ro_root /rw_root
-	mount -t squashfs /dev/sda1 /ro_root
-	mke2fs -q -F -t ext4 /dev/sdb1
-	mount -t ext4 /dev/sdb1 /rw_root
-	mkdir -p /rw_root/upper /rw_root/work
-	mount -t overlay overlay -o lowerdir=/ro_root,upperdir=/rw_root/upper,workdir=/rw_root/work /root
-	sleep 10
+labsync_info() {
+	echo -e "\n\033[36m${1}... \033[0m"
+}
 
+labsync_warn() {
+	echo -e "\n\033[31mWARNING: ${1}\033[0m"
+}
 
+labsync_err() {
+	labsync_warn "$1; interrupting startup"
+	read x
 }
 
 labsync_top() {
-	:
+	# Check if mandatory parameters are missing
+	if [ -z "${labsync_disk}" ]; then
+		labsync_err "The disk parameter is missing"
+	fi
+	if [ -z "${labsync_partsize_boot}" ]; then
+		labsync_err "The partsize_boot parameter is missing"
+	fi
+	if [ -z "${labsync_torrent}" ]; then
+		labsync_err "The torrent parameter is missing"
+	fi
+
+	cat << EOM
+Starting
+ ""#           #
+   #     mmm   #mmm    mmm   m   m  m mm    mmm
+   #    "   #  #" "#  #   "  "m m"  #"  #  #"  "
+   #    m"""#  #   #   """m   #m#   #   #  #
+   "mm  "mm"#  ##m#"  "mmm"   "#    #   #  "#mm"
+                              m"
+                             ""
+@@CI_REPOSITORY_URL@@
+
+EOM
 }
 
 labsync_premount() {
-	:
+	labsync_info "Configuring networking"
+	configure_networking
+}
+
+
+labsync_mount_root() {
+	labsync_info "Downloading torrent file from ${labsync_torrent}"
+	while ! wget -T 10 -O /tmp/torrent "${labsync_torrent}"; do sleep 1; done
+	aria2c -S -T /tmp/torrent > /tmp/torrent_info
+	squashfs_file="$(sed -n '/idx|path\/length/,${s/\s*1|\(.*\)$/\1/p}' /tmp/torrent_info)"
+	image_size_bytes="$(sed -n 's/Total Length: .*(\([0-9,]*\)).*$/\1/p' /tmp/torrent_info | tr -d ',')"
+	torrent_name="$(sed -n 's/^Name: \(.*\)$/\1/p' /tmp/torrent_info)"
+
+	labsync_info "Updating partitions"
+	size_disk=$(blockdev --getsz ${labsync_disk})
+	size_part_1=$((labsync_partsize_boot * 1024 * 1024 / 512))
+	size_part_2=$(((size_disk - labsync_partsize_boot) * 1024 * 1024 / 512))
+	start_part_2=$((size_part_1 + 2048))
+
+	sfdisk -q ${labsync_disk} << PARTTABLE
+label: dos
+label-id: 0xdeadbeef
+device: ${labsync_disk}
+unit: sectors
+
+${labsync_disk}1 : start=         2048, size=     $size_part_1, type=83
+${labsync_disk}2 : start=$start_part_2, size=     $size_part_2, type=8e
+PARTTABLE
+
+
+	labsync_info "Doing lvm stuff"
+	pv_device="${labsync_disk}2"
+	vg_name="vglab"
+	lv_name_sqashfs="sqfs-$torrent_name"
+	lv_name_overlay="ovly-$torrent_name"
+
+	lvm pvcreate -t "$pv_device"
+	pvstatus=$?
+	if [ $pvstatus -eq 0 ]; then
+		# is not a physical volume
+		lvm pvcreate "$pv_device"
+	fi
+
+	lvm vgcreate -t "$vg_name" "$pv_device"
+	vgstatus=$?
+	if [ $? -eq 0 ]; then
+		lvm vgcreate "$vg_name" "$pv_device"
+	fi
+
+	labsync_create_or_resize_lv "$vg_name" "$lv_name_sqashfs" $((image_size_bytes * 2)) $image_size_bytes
+	labsync_create_or_resize_lv "$vg_name" "$lv_name_overlay" $((500 * 1024 * 1024))
+
+	#lvm vgchange -ay "$vg_name"
+	#lvm lvscan -a --ignorelockingfailure
+	#lvm lvchange -aly --ignorelockingfailure "$vg_name/$lv_name_sqashfs"
+	lv_path_squashfs="$(lvm lvs "$vg_name/$lv_name_sqashfs" -o LV_PATH --noheadings --units b --nosuffix | sed 's/\s//g')"
+	lv_path_overlay="$(lvm lvs "$vg_name/$lv_name_overlay" -o LV_PATH --noheadings --units b --nosuffix | sed 's/\s//g')"
+
+	labsync_info "Downloading squashfs image $squashfs_file to $lv_path_squashfs"
+	(cd /tmp
+		ln -s "$(realpath "$lv_path_squashfs")" "$squashfs_file"
+		aria2c \
+			--console-log-level=warn \
+			--allow-overwrite \
+			--check-integrity \
+			--seed-time=0 \
+			--summary-interval=0 \
+			--file-allocation=none \
+			--enable-dht=false \
+			/tmp/torrent
+	)
+
+	labsync_info "Mounting squashfs and overlay"
+	modprobe overlay
+	mkdir -p /root
+	mkdir /ro_root /rw_root
+	mount -t squashfs "$(realpath "$lv_path_squashfs")" /ro_root
+	mke2fs -q -F -t ext4 "$lv_path_overlay"
+	mount -t ext4 "$lv_path_overlay" /rw_root
+	mkdir -p /rw_root/upper /rw_root/work
+	mount -t overlay overlay -o lowerdir=/ro_root,upperdir=/rw_root/upper,workdir=/rw_root/work /root
+
+	case "$labsync_wait" in
+		pause)
+			read x
+			;;
+		*)
+			sleep $labsync_wait
+			;;
+	esac
 }
 
 labsync_bottom() {

From bc4d1af4288315996edd11b402f7c0afa8ebf207 Mon Sep 17 00:00:00 2001
From: jalr <mail@jalr.de>
Date: Thu, 1 Mar 2018 19:52:24 +0100
Subject: [PATCH 2/4] Rename squashfs file, add .squashfs syntax

---
 Makefile                    | 10 +++++++---
 mktorrent/entrypoint.sh     | 15 ++++++++++++---
 packer/docker/entrypoint.sh |  2 +-
 3 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/Makefile b/Makefile
index f2fab2a..56a9fd9 100644
--- a/Makefile
+++ b/Makefile
@@ -5,6 +5,11 @@ WEBSEED ?= http://10.2.2.1
 PACKER_DOCKER_IMAGE ?= labsync-packer
 MKTORRENT_DOCKER_IMAGE ?= labsync-mktorrent
 
+CWD=$(abspath $(patsubst %/,%,$(dir $(abspath $(lastword $(MAKEFILE_LIST))))))
+
+.PHONY: default
+default: clean dockerimg images/debian-stretch.squashfs images/debian-stretch.torrent
+
 .PHONY: clean
 clean:
 	rm -f images/*
@@ -15,7 +20,7 @@ dockerimg:
 	docker build -t "$(PACKER_DOCKER_IMAGE)" --build-arg "PACKER_VERSION=$(PACKER_VERSION)" packer/docker
 	docker build -t "$(MKTORRENT_DOCKER_IMAGE)" mktorrent
 
-images/debian-stretch:
+images/debian-stretch.squashfs:
 	docker run \
 		--rm \
 		-v /var/run/docker.sock:/var/run/docker.sock \
@@ -26,7 +31,6 @@ images/debian-stretch:
 		"$(PACKER_DOCKER_IMAGE)" \
 		debian-stretch
 
-#images/debian-stretch.squashfs
 images/debian-stretch.torrent:
 	docker run \
 		--rm \
@@ -36,4 +40,4 @@ images/debian-stretch.torrent:
 		-e "ANNOUNCE=$(ANNOUNCE)" \
 		-e "WEBSEED=$(WEBSEED)" \
 		"$(MKTORRENT_DOCKER_IMAGE)" \
-		debian-stretch
+		debian-stretch.squashfs
diff --git a/mktorrent/entrypoint.sh b/mktorrent/entrypoint.sh
index d09f4f6..fc058b9 100755
--- a/mktorrent/entrypoint.sh
+++ b/mktorrent/entrypoint.sh
@@ -2,7 +2,10 @@
 
 set -e
 
-NAME="$1"
+if [ "$NAME" = "" ]; then
+	# remove file extension
+	NAME="$(echo "$1" | sed 's/\.[^.]*//')"
+fi
 
 if [ "$WEBSEED" = "" ]; then
 	echo '$WEBSEED not provided' >&2
@@ -14,11 +17,17 @@ if [ "$ANNOUNCE" = "" ]; then
 fi
 
 TORRENT_FILE="$NAME.torrent"
-WEBSEED_URL="$WEBSEED/$NAME"
+WEBSEED_URL="$WEBSEED/$1"
 
 if [ -e "$TORRENT_FILE" ]; then rm "$TORRENT_FILE"; fi
 
-mktorrent-borg -a "$ANNOUNCE" -o "$TORRENT_FILE" -l 22 -w "$WEBSEED_URL" "$NAME"
+mktorrent-borg \
+	-n "$NAME" \
+	-a "$ANNOUNCE" \
+	-o "$TORRENT_FILE" \
+	-l 22 \
+	-w "$WEBSEED_URL" \
+	"$1"
 
 if [ "$user" != "" ] && [ "$group" != "" ]; then
 	chown "$user:$group" "$TORRENT_FILE"
diff --git a/packer/docker/entrypoint.sh b/packer/docker/entrypoint.sh
index b0211ec..5261f98 100755
--- a/packer/docker/entrypoint.sh
+++ b/packer/docker/entrypoint.sh
@@ -12,7 +12,7 @@ fi
 PACKER_JSON="$NAME.json"
 INITRAMFS_FILE="$NAME.initramfs"
 LINUX_FILE="$NAME.linux"
-SQUASHFS_FILE="$NAME"
+SQUASHFS_FILE="$NAME.squashfs"
 
 packer build "$PACKER_JSON"
 

From a4789e6902d532e86309d4026c4fdef45cbcf409 Mon Sep 17 00:00:00 2001
From: jalr <mail@jalr.de>
Date: Thu, 8 Mar 2018 23:59:26 +0100
Subject: [PATCH 3/4] Add tftp for qemu; Include qemu in Makefile

---
 Makefile | 98 +++++++++++++++++++++++++++++++++++++++++++++++++++++---
 qemu.sh  | 35 --------------------
 txt.cfg  | 10 ++++++
 3 files changed, 104 insertions(+), 39 deletions(-)
 delete mode 100755 qemu.sh
 create mode 100644 txt.cfg

diff --git a/Makefile b/Makefile
index 56a9fd9..deff150 100644
--- a/Makefile
+++ b/Makefile
@@ -7,20 +7,36 @@ MKTORRENT_DOCKER_IMAGE ?= labsync-mktorrent
 
 CWD=$(abspath $(patsubst %/,%,$(dir $(abspath $(lastword $(MAKEFILE_LIST))))))
 
+qemu_ifname_br = brlabsync
+qemu_ifname_tap = taplabsync
+qemu_hostname = qemumachine
+qemu_host_ip = 10.2.2.1
+qemu_netmask = 24
+qemu_vm_ip = 10.2.2.10
+qemu_disk = tmp/qemu-disk.img
+qemu_target ?= debian-stretch
+qemu_kernel = $(qemu_target).linux
+qemu_initramfs = $(qemu_target).initramfs.dev
+qemu_torrent = $(qemu_target).torrent
+
 .PHONY: default
-default: clean dockerimg images/debian-stretch.squashfs images/debian-stretch.torrent
+default: dockerimg images/debian-stretch.squashfs images/debian-stretch.torrent
 
 .PHONY: clean
 clean:
 	rm -f images/*
-	rm -f tmp/*
+	rm -rf tmp
 
 .PHONY: dockerimg
 dockerimg:
 	docker build -t "$(PACKER_DOCKER_IMAGE)" --build-arg "PACKER_VERSION=$(PACKER_VERSION)" packer/docker
 	docker build -t "$(MKTORRENT_DOCKER_IMAGE)" mktorrent
 
-images/debian-stretch.squashfs:
+images:
+	[ ! -d "$@" ] && mkdir "$@"
+	touch "$@"
+
+images/debian-stretch.squashfs: images
 	docker run \
 		--rm \
 		-v /var/run/docker.sock:/var/run/docker.sock \
@@ -31,7 +47,7 @@ images/debian-stretch.squashfs:
 		"$(PACKER_DOCKER_IMAGE)" \
 		debian-stretch
 
-images/debian-stretch.torrent:
+images/debian-stretch.torrent: images
 	docker run \
 		--rm \
 		-v "${PWD}/images:/workdir" \
@@ -41,3 +57,77 @@ images/debian-stretch.torrent:
 		-e "WEBSEED=$(WEBSEED)" \
 		"$(MKTORRENT_DOCKER_IMAGE)" \
 		debian-stretch.squashfs
+
+# updates the initramfs
+# only used for development
+images/debian-stretch.initramfs.dev: tmp/initramfs-extracted/debian-stretch packer/initramfs/labsync
+	cp packer/initramfs/labsync tmp/initramfs-extracted/debian-stretch/scripts/labsync
+	(cd tmp/initramfs-extracted/debian-stretch && find . | cpio -H newc -o | gzip > $(CWD)/images/debian-stretch.initramfs.dev)
+
+tmp:
+	[ ! -d "$@" ] && mkdir "$@" || true
+
+tmp/initramfs-extracted/debian-stretch: images/debian-stretch.initramfs
+	rm -rf tmp/initramfs-extracted/debian-stretch
+	mkdir -p tmp/initramfs-extracted/debian-stretch
+	(cd tmp/initramfs-extracted/debian-stretch && zcat "$(CWD)/images/debian-stretch.initramfs" | cpio -i)
+	touch tmp/initramfs-extracted/debian-stretch
+
+$(qemu_disk): tmp
+	qemu-img create "$@" 4G
+
+tmp/netboot.tar.gz: tmp
+	wget -O "$@" https://cdn-aws.deb.debian.org/debian/dists/stretch/main/installer-amd64/current/images/netboot/netboot.tar.gz
+	touch "$@"
+
+tmp/tftproot: tmp/netboot.tar.gz
+	[ ! -d tmp/tftproot ] && mkdir tmp/tftproot || true
+	tar -xzf "$<" -C "$@"
+	rm tmp/tftproot/debian-installer/amd64/boot-screens/txt.cfg
+
+tmp/tftproot/images: tmp/tftproot
+	ln -s ../../images tmp/tftproot/images
+
+tmp/tftproot/debian-installer/amd64/boot-screens/txt.cfg: txt.cfg
+	ln -s ../../../../../txt.cfg "$@"
+
+
+/sys/devices/virtual/net/$(qemu_ifname_tap):
+	sudo ip tuntap add dev $(qemu_ifname_tap) mode tap user $(USER)
+
+/sys/devices/virtual/net/$(qemu_ifname_br):
+	sudo brctl addbr $(qemu_ifname_br)
+
+/sys/devices/virtual/net/$(qemu_ifname_br)/brif/$(qemu_ifname_tap): /sys/devices/virtual/net/$(qemu_ifname_tap) /sys/devices/virtual/net/$(qemu_ifname_br)
+	sudo brctl addif $(qemu_ifname_br) $(qemu_ifname_tap)
+
+.PHONY: qemu-network
+qemu-network:  /sys/devices/virtual/net/$(qemu_ifname_br)/brif/$(qemu_ifname_tap)
+	if ! ip addr show dev $(qemu_ifname_br) | grep -F "$(qemu_host_ip)/$(qemu_netmask)"; then \
+		sudo ip addr add $(qemu_host_ip)/$(qemu_netmask) dev $(qemu_ifname_br); \
+	fi
+	sudo ip link set $(qemu_ifname_tap) up
+	sudo ip link set $(qemu_ifname_br) up
+
+.PHONY: qemu
+qemu: qemu-network $(qemu_disk)
+	qemu-system-x86_64 \
+		-kernel "images/$(qemu_kernel)" \
+		-initrd "images/$(qemu_initramfs)" \
+		-drive format=raw,file="$(qemu_disk)" \
+		-append "boot=labsync labsync_disk=/dev/sda labsync_partsize_boot=512 labsync_torrent=http://10.2.2.1/$(qemu_torrent) quiet vga=792 ip=$(qemu_vm_ip):::255.255.255.0:$(qemu_hostname):ens3:off labsync_wait=pause" \
+		-enable-kvm \
+		-m 1G \
+		-net nic \
+		-net tap,ifname=$(qemu_ifname_tap),script=no,downscript=no
+
+.PHONY: qemu-tftp
+qemu-tftp: tmp/tftproot tmp/tftproot/images tmp/tftproot/debian-installer/amd64/boot-screens/txt.cfg qemu-network $(qemu_disk)
+	qemu-system-x86_64 \
+		-net nic -net tap,ifname=$(qemu_ifname_tap),script=no,downscript=no \
+		-net nic -net user,tftp=.,bootfile=/tmp/tftproot/pxelinux.0 \
+		-enable-kvm \
+		-m 1G \
+		-drive format=raw,file="$(qemu_disk)" \
+		-boot n
+
diff --git a/qemu.sh b/qemu.sh
deleted file mode 100755
index 26f93eb..0000000
--- a/qemu.sh
+++ /dev/null
@@ -1,35 +0,0 @@
-#!/bin/sh
-
-ifname_tap=taplabsync
-ifname_br=brlabsync
-
-TORRENT="$1.torrent"
-KERNEL="$1.linux"
-INITRAMFS="$1.initramfs"
-SQUASHFS="$1"
-
-if [ "$1" = "" ]; then
-	echo "you must supply an image name!" >&2
-	exit 1
-fi
-
-mkdir -p ./tmp
-[ -e tmp/qemu-disk.img ] || qemu-img create tmp/qemu-disk.img 4G
-
-sudo ip tuntap add dev $ifname_tap mode tap user $USER
-sudo brctl addbr $ifname_br
-sudo brctl addif $ifname_br $ifname_tap
-sudo ip addr add 10.2.2.1/24 dev $ifname_br
-sudo ip link set taplabsync up
-sudo ip link set brlabsync up
-
-qemu-system-x86_64 \
-	-kernel "images/$KERNEL" \
-	-initrd "images/$INITRAMFS" \
-	-drive format=raw,file=tmp/qemu-disk.img \
-	-drive format=raw,file=tmp/qemu-disk2.img \
-	-append "boot=labsync disk=/dev/sda partsize=3072 torrent=http://10.2.2.1/$TORRENT torrent_file=$SQUASHFS quiet vga=792 ip=10.2.2.2:::255.255.255.0:qemumachine:ens3:off" \
-	-enable-kvm \
-	-m 1G \
-	-net nic \
-	-net tap,ifname=$ifname_tap,script=no,downscript=no
diff --git a/txt.cfg b/txt.cfg
new file mode 100644
index 0000000..b1119e0
--- /dev/null
+++ b/txt.cfg
@@ -0,0 +1,10 @@
+label labsync
+	menu label ^labsync
+	kernel images/debian-stretch.linux
+	append initrd=images/debian-stretch.initramfs.dev boot=labsync labsync_disk=/dev/sda labsync_partsize_boot=512 labsync_torrent=http://10.2.2.1/debian-stretch.torrent quiet vga=792 ip=10.2.2.10:::255.255.255.0:qemu-host:ens3:off labsync_wait=pause
+
+label install
+	menu label ^Install
+	kernel debian-installer/amd64/linux
+	append vga=788 initrd=debian-installer/amd64/initrd.gz --- quiet
+

From ce5ed5d1de0a9fcca0d30eedc161ff875dae1981 Mon Sep 17 00:00:00 2001
From: jalr <mail@jalr.de>
Date: Sun, 11 Mar 2018 15:52:00 +0100
Subject: [PATCH 4/4] use resuming for wget

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index deff150..5f2de08 100644
--- a/Makefile
+++ b/Makefile
@@ -77,7 +77,7 @@ $(qemu_disk): tmp
 	qemu-img create "$@" 4G
 
 tmp/netboot.tar.gz: tmp
-	wget -O "$@" https://cdn-aws.deb.debian.org/debian/dists/stretch/main/installer-amd64/current/images/netboot/netboot.tar.gz
+	wget -c -O "$@" https://cdn-aws.deb.debian.org/debian/dists/stretch/main/installer-amd64/current/images/netboot/netboot.tar.gz
 	touch "$@"
 
 tmp/tftproot: tmp/netboot.tar.gz