README.md

@@ -1,13 +0,0 @@
-# VMs
-
-## HOW-TO
-To start (or create) a VM, go in the desired folder and run 
-```console
-$ ./run.sh
-```
-
-## USB Passthrough
-
-If you need USB passthrough, uncomment and fill in the corresponding line in
-`run.sh`.
-[You may need root privileges](https://wiki.archlinux.org/title/QEMU#Pass-through_host_USB_device).

arch/create.sh

@@ -0,0 +1,18 @@
+#!/bin/bash -e
+cd "$(dirname "$0")"
+. ./lib.sh
+
+if [ -f hda.qcow2 ]; then
+    echo -e "Disk file exists. Are you sure you don't want" \
+        "\e[1m\e[31m./run.sh\e[0m?\nCtrl-C to interrupt" >&2
+    read -r
+fi
+
+qemu-img create -f qcow2 hda.qcow2 10G
+
+CMD=(
+    "${CMD[@]}"
+    -drive file=arch.iso,index=1,media=cdrom,readonly=on
+)
+
+"${CMD[@]}"

arch/download_isos.sh

@@ -0,0 +1,6 @@
+#!/bin/bash -e
+
+arch=''
+
+curl -LC- \
+    -o arch.iso "$arch"

arch/lib.sh

@@ -0,0 +1,23 @@
+#!/bin/bash -e
+
+RAM="$(free -g | awk '/^Mem:/{print $2 - 2}')"
+
+if   [ "$RAM" -le  2 ]; then  RAM=2
+elif [ "$RAM" -gt 32 ]; then RAM=32; fi
+
+RAM="${RAM}G"
+
+CMD=(
+    qemu-system-x86_64
+        -accel kvm
+        -M q35
+        # usb
+        -device qemu-xhci
+        -cpu host
+        -m "2G,maxmem=$RAM"
+        -vga virtio
+        #-drive if=virtio,file=hda.qcow2
+        # shared memory
+        -object memory-backend-ram,id=mem,size=2G,share=on
+        -numa node,memdev=mem
+)

arch/run.sh

@@ -1,20 +1,12 @@
 #!/bin/bash -e
 cd "$(dirname "$0")"
-. ../lib.sh
+. ./lib.sh
-
-hda='https://geo.mirror.pkgbuild.com/images/latest/Arch-Linux-x86_64-basic.qcow2'
-
-if ! [ -f hda.qcow2 ]; then
-    ask_yn "hda does not exist. Download?" \
-        && curl -LC- -o hda.qcow2 "$hda"   \
-        || exit 1
-fi
 
 CMD=(
     "${CMD[@]}"
     -nic user,model=virtio-net-pci
-    # USB passthrough, might need root privileges
+    # usb passthrough, might need root privileges
-    #-device usb-host,vendorid=0xffff,productid=0xffff
+    #-device usb-host,vendorid=0x058f,productid=0x6387
 )
 
 "${CMD[@]}"

debian12/run.sh

@@ -1,20 +0,0 @@
-#!/bin/bash -e
-cd "$(dirname "$0")"
-. ../lib.sh
-
-hda='https://cloud.debian.org/images/cloud/bookworm/latest/debian-12-nocloud-amd64.qcow2'
-
-if ! [ -f hda.qcow2 ]; then
-    ask_yn "hda does not exist. Download?" \
-        && curl -LC- -o hda.qcow2 "$hda"   \
-        || exit 1
-fi
-
-CMD=(
-    "${CMD[@]}"
-    -nic user,model=virtio-net-pci
-    # USB passthrough, might need root privileges
-    #-device usb-host,vendorid=0xffff,productid=0xffff
-)
-
-"${CMD[@]}"

win2k22/create.sh

@@ -1,19 +1,20 @@
 #!/bin/bash -e
 cd "$(dirname "$0")"
-. ../lib.sh
+. ./lib.sh
 
-if ! [ -f win2k22.iso ] || ! [ -f virtio.iso ]; then
+if [ -f hda.qcow2 ]; then
-    ask_yn "win2k22.iso and/or virtio.iso not found, download?" \
+    echo -e "Disk file exists. Are you sure you don't want" \
-        && bash ./download_isos.sh                              \
+        "\e[1m\e[31m./run.sh\e[0m?\nCtrl-C to interrupt" >&2
-        || exit 1
+    read -r
 fi
 
 qemu-img create -f qcow2 hda.qcow2 40G
 
 CMD=(
     "${CMD[@]}"
-    -drive file=win2k22.iso,media=cdrom,readonly=on
+    -drive file=win2k22.iso,index=1,media=cdrom,readonly=on
-    -drive  file=virtio.iso,media=cdrom,readonly=on
+    -drive  file=virtio.iso,index=2,media=cdrom,readonly=on
+    #-drive file.driver=http,file.filename=http://example.com/image.qcow2
     -nic none # you don't want internet access for a windows installation
 )
 

win2k22/lib.sh

@@ -1,16 +1,5 @@
 #!/bin/bash -e
 
-function ask_yn() {
-    local ans
-
-    printf "$1 (Y/n) " >&2
-    read -r ans
-    case "${ans,,}" in
-        y*|'') return 0 ;;
-        *)     return 1 ;;
-    esac
-}
-
 RAM="$(free -g | awk '/^Mem:/{print $2 - 2}')"
 
 if   [ "$RAM" -le  2 ]; then  RAM=2
@@ -22,12 +11,12 @@ CMD=(
     qemu-system-x86_64
         -accel kvm
         -M q35
+        # usb
+        -device qemu-xhci
         -cpu host
         -m "2G,maxmem=$RAM"
         -vga virtio
         -drive if=virtio,file=hda.qcow2
-        # usb
-        -device qemu-xhci
         # shared memory
         -object memory-backend-ram,id=mem,size=2G,share=on
         -numa node,memdev=mem

win2k22/run.sh

@@ -1,18 +1,12 @@
 #!/bin/bash -e
 cd "$(dirname "$0")"
-. ../lib.sh
+. ./lib.sh
-
-if ! [ -f hda.qcow2 ]; then
-    ask_yn "hda.qcow2 not found, create?" \
-        && bash ./create.sh               \
-        || exit 1
-fi
 
 CMD=(
     "${CMD[@]}"
     -nic user,model=virtio-net-pci
-    # USB passthrough, might need root privileges
+    # usb passthrough, might need root privileges
-    #-device usb-host,vendorid=0xffff,productid=0xffff
+    -device usb-host,vendorid=0x058f,productid=0x6387
 )
 
 "${CMD[@]}"