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Merge pull request #2790 from justincormack/vbox
Add VirtualBox support to linuxkit run
This commit is contained in:
Justin Cormack
GitHub
commit
090abf3254
30
docs/platform-vbox.md
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30
docs/platform-vbox.md
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@ -0,0 +1,30 @@
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# LinuxKit with VirtualBox
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LinuxKit can run using Oracle VirtualBox. This should work on OSX, Linux
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and Windows. The standard install should be sufficient.
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NB: Windows support is not currently working but should be fixed soon.
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## Boot
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The Virtualbox backend currently supports booting from disks or ISOs.
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It should work with either BIOS (default) or EFI
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(with `linuxkit run vbox --uefi ...`).
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## Console
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With `linuxkit run vbox` the serial console is redirected to
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stdio, providing interactive access to the VM.
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## Disks
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The Virtualbox backend support configuring a persistent disk using the
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standard `linuxkit` `-disk` syntax. Multiple disks are
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supported and can be created in `raw` format; other formats that VirtualBox
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supports can be attached
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## Networking
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You can select the networking mode, which defaults to the standard `nat`, but
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some networking modes may require additional configuration.
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@ -25,6 +25,7 @@ func runUsage() {
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fmt.Printf(" openstack\n")
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fmt.Printf(" packet\n")
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fmt.Printf(" qemu [linux]\n")
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fmt.Printf(" vbox\n")
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fmt.Printf(" vcenter\n")
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fmt.Printf(" vmware\n")
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fmt.Printf("\n")
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@ -63,6 +64,8 @@ func run(args []string) {
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runQemu(args[1:])
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case "vmware":
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runVMware(args[1:])
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case "vbox":
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runVbox(args[1:])
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case "vcenter":
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runVcenter(args[1:])
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default:
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269
src/cmd/linuxkit/run_vbox.go
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269
src/cmd/linuxkit/run_vbox.go
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package main
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import (
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"bytes"
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"flag"
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"fmt"
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"io"
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"net"
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"os"
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"os/exec"
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"os/signal"
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"path/filepath"
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"runtime"
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"strconv"
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"strings"
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log "github.com/sirupsen/logrus"
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)
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func runVbox(args []string) {
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invoked := filepath.Base(os.Args[0])
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flags := flag.NewFlagSet("vbox", flag.ExitOnError)
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flags.Usage = func() {
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fmt.Printf("USAGE: %s run vbox [options] path\n\n", invoked)
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fmt.Printf("'path' specifies the path to the VM image.\n")
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fmt.Printf("\n")
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fmt.Printf("Options:\n")
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flags.PrintDefaults()
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fmt.Printf("\n")
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}
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// vbox options
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vboxmanageFlag := flags.String("vboxmanage", "VBoxManage", "VBoxManage binary to use")
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keep := flags.Bool("keep", false, "Keep the VM after finishing")
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vmName := flags.String("name", "", "Name of the Virtualbox VM")
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state := flags.String("state", "", "Path to directory to keep VM state in")
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// Paths and settings for disks
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var disks Disks
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flags.Var(&disks, "disk", "Disk config, may be repeated. [file=]path[,size=1G][,format=raw]")
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// VM configuration
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cpus := flags.String("cpus", "1", "Number of CPUs")
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mem := flags.String("mem", "1024", "Amount of memory in MB")
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// booting config
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isoBoot := flags.Bool("iso", false, "Boot image is an ISO")
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uefiBoot := flags.Bool("uefi", false, "Use UEFI boot")
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// networking
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networking := flags.String("networking", "nat", "Networking mode. null|nat|bridged|intnet|hostonly|generic|natnetwork[<devicename>]")
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if err := flags.Parse(args); err != nil {
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log.Fatal("Unable to parse args")
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}
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remArgs := flags.Args()
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if runtime.GOOS == "windows" {
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log.Fatalf("TODO: Windows is not yet supported")
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}
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if len(remArgs) == 0 {
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fmt.Println("Please specify the path to the image to boot")
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flags.Usage()
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os.Exit(1)
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}
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path := remArgs[0]
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if strings.HasSuffix(path, ".iso") {
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*isoBoot = true
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}
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vboxmanage, err := exec.LookPath(*vboxmanageFlag)
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if err != nil {
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log.Fatalf("Cannot find management binary %s: %v", *vboxmanageFlag, err)
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}
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name := *vmName
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if name == "" {
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name = strings.TrimSuffix(filepath.Base(path), filepath.Ext(path))
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}
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if *state == "" {
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prefix := strings.TrimSuffix(path, filepath.Ext(path))
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*state = prefix + "-state"
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}
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if err := os.MkdirAll(*state, 0755); err != nil {
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log.Fatalf("Could not create state directory: %v", err)
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}
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// remove machine in case it already exists
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cleanup(vboxmanage, name, false)
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_, out, err := manage(vboxmanage, "createvm", "--name", name, "--register")
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if err != nil {
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log.Fatalf("createvm error: %v\n%s", err, out)
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}
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_, out, err = manage(vboxmanage, "modifyvm", name, "--acpi", "on")
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if err != nil {
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log.Fatalf("modifyvm --acpi error: %v\n%s", err, out)
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}
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_, out, err = manage(vboxmanage, "modifyvm", name, "--memory", *mem)
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if err != nil {
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log.Fatalf("modifyvm --memory error: %v\n%s", err, out)
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}
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_, out, err = manage(vboxmanage, "modifyvm", name, "--cpus", *cpus)
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if err != nil {
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log.Fatalf("modifyvm --cpus error: %v\n%s", err, out)
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}
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firmware := "bios"
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if *uefiBoot {
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firmware = "efi"
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}
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_, out, err = manage(vboxmanage, "modifyvm", name, "--firmware", firmware)
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if err != nil {
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log.Fatalf("modifyvm --firmware error: %v\n%s", err, out)
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}
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// set up serial console
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_, out, err = manage(vboxmanage, "modifyvm", name, "--uart1", "0x3F8", "4")
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if err != nil {
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log.Fatalf("modifyvm --uart error: %v\n%s", err, out)
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}
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var consolePath string
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if runtime.GOOS == "windows" {
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// TODO use a named pipe on Windows
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} else {
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consolePath = filepath.Join(*state, "console")
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consolePath, err = filepath.Abs(consolePath)
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if err != nil {
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log.Fatalf("Bad path: %v", err)
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}
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}
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_, out, err = manage(vboxmanage, "modifyvm", name, "--uartmode1", "client", consolePath)
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if err != nil {
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log.Fatalf("modifyvm --uartmode error: %v\n%s", err, out)
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}
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_, out, err = manage(vboxmanage, "storagectl", name, "--name", "IDE Controller", "--add", "ide")
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if err != nil {
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log.Fatalf("storagectl error: %v\n%s", err, out)
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}
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if *isoBoot {
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_, out, err = manage(vboxmanage, "storageattach", name, "--storagectl", "IDE Controller", "--port", "1", "--device", "0", "--type", "dvddrive", "--medium", path)
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if err != nil {
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log.Fatalf("storageattach error: %v\n%s", err, out)
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}
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_, out, err = manage(vboxmanage, "modifyvm", name, "--boot1", "dvd")
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if err != nil {
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log.Fatalf("modifyvm --boot error: %v\n%s", err, out)
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}
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} else {
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_, out, err = manage(vboxmanage, "storageattach", name, "--storagectl", "IDE Controller", "--port", "1", "--device", "0", "--type", "hdd", "--medium", path)
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if err != nil {
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log.Fatalf("storageattach error: %v\n%s", err, out)
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}
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_, out, err = manage(vboxmanage, "modifyvm", name, "--boot1", "disk")
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if err != nil {
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log.Fatalf("modifyvm --boot error: %v\n%s", err, out)
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}
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}
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for i, d := range disks {
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id := strconv.Itoa(i)
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if d.Size != 0 && d.Format == "" {
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d.Format = "raw"
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}
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if d.Format != "raw" && d.Path == "" {
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log.Fatal("vbox currently can only create raw disks")
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}
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if d.Path == "" && d.Size == 0 {
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log.Fatal("please specify an existing disk file or a size")
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}
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if d.Path == "" {
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d.Path = filepath.Join(*state, "disk"+id+".img")
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if err := os.Truncate(d.Path, int64(d.Size)*int64(1048576)); err != nil {
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log.Fatalf("Cannot create disk: %v", err)
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}
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}
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_, out, err = manage(vboxmanage, "storageattach", name, "--storagectl", "IDE Controller", "--port", "2", "--device", id, "--type", "hdd", "--medium", d.Path)
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if err != nil {
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log.Fatalf("storageattach error: %v\n%s", err, out)
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}
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}
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_, out, err = manage(vboxmanage, "modifyvm", name, "--nictype1", "virtio")
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if err != nil {
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log.Fatalf("modifyvm --nictype error: %v\n%s", err, out)
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}
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_, out, err = manage(vboxmanage, "modifyvm", name, "--nic1", *networking)
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if err != nil {
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log.Fatalf("modifyvm --nic error: %v\n%s", err, out)
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}
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// create socket
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_ = os.Remove(consolePath)
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ln, err := net.Listen("unix", consolePath)
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if err != nil {
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log.Fatalf("Cannot listen on console socket %s: %v", consolePath, err)
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}
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_, out, err = manage(vboxmanage, "startvm", name, "--type", "headless")
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if err != nil {
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log.Fatalf("startvm error: %v\n%s", err, out)
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}
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt)
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go func() {
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<-c
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cleanup(vboxmanage, name, *keep)
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os.Exit(1)
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}()
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socket, err := ln.Accept()
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if err != nil {
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log.Fatalf("Accept error: %v", err)
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}
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go func() {
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if _, err := io.Copy(socket, os.Stdin); err != nil {
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cleanup(vboxmanage, name, *keep)
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log.Fatalf("Copy error: %v", err)
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}
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cleanup(vboxmanage, name, *keep)
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os.Exit(0)
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}()
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go func() {
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if _, err := io.Copy(os.Stdout, socket); err != nil {
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cleanup(vboxmanage, name, *keep)
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log.Fatalf("Copy error: %v", err)
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}
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cleanup(vboxmanage, name, *keep)
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os.Exit(0)
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}()
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// wait forever
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select {}
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}
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func cleanup(vboxmanage string, name string, keep bool) {
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_, _, _ = manage(vboxmanage, "controlvm", name, "poweroff")
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if keep {
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return
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}
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// delete VM
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_, _, _ = manage(vboxmanage, "unregistervm", name, "--delete")
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}
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func manage(vboxmanage string, args ...string) (string, string, error) {
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cmd := exec.Command(vboxmanage, args...)
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log.Debugf("[VBOX]: %s %s", vboxmanage, strings.Join(args, " "))
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var stdout bytes.Buffer
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var stderr bytes.Buffer
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cmd.Stdout = &stdout
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cmd.Stderr = &stderr
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err := cmd.Run()
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return stdout.String(), stderr.String(), err
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}
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