628 lines
21 KiB
Go
628 lines
21 KiB
Go
package vmcx
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import (
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"context"
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"errors"
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"fmt"
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"log"
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"os"
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"strings"
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hypervcommon "github.com/hashicorp/packer/builder/hyperv/common"
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"github.com/hashicorp/packer/common"
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"github.com/hashicorp/packer/common/bootcommand"
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powershell "github.com/hashicorp/packer/common/powershell"
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"github.com/hashicorp/packer/common/powershell/hyperv"
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"github.com/hashicorp/packer/helper/communicator"
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"github.com/hashicorp/packer/helper/config"
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"github.com/hashicorp/packer/helper/multistep"
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"github.com/hashicorp/packer/packer"
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"github.com/hashicorp/packer/template/interpolate"
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)
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const (
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DefaultRamSize = 1 * 1024 // 1GB
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MinRamSize = 32 // 32MB
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MaxRamSize = 1024 * 1024 // 1TB
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MinNestedVirtualizationRamSize = 4 * 1024 // 4GB
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LowRam = 256 // 256MB
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DefaultUsername = ""
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DefaultPassword = ""
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)
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// Builder implements packer.Builder and builds the actual Hyperv
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// images.
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type Builder struct {
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config Config
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runner multistep.Runner
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}
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type Config struct {
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common.PackerConfig `mapstructure:",squash"`
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common.HTTPConfig `mapstructure:",squash"`
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common.ISOConfig `mapstructure:",squash"`
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common.FloppyConfig `mapstructure:",squash"`
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bootcommand.BootConfig `mapstructure:",squash"`
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hypervcommon.OutputConfig `mapstructure:",squash"`
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hypervcommon.SSHConfig `mapstructure:",squash"`
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hypervcommon.ShutdownConfig `mapstructure:",squash"`
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// The size, in megabytes, of the computer memory in the VM.
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// By default, this is 1024 (about 1 GB).
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RamSize uint `mapstructure:"memory"`
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//
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SecondaryDvdImages []string `mapstructure:"secondary_iso_images"`
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// Should integration services iso be mounted
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GuestAdditionsMode string `mapstructure:"guest_additions_mode"`
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// The path to the integration services iso
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GuestAdditionsPath string `mapstructure:"guest_additions_path"`
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// This is the path to a directory containing an exported virtual machine.
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CloneFromVMCXPath string `mapstructure:"clone_from_vmcx_path"`
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// This is the name of the virtual machine to clone from.
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CloneFromVMName string `mapstructure:"clone_from_vm_name"`
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// This is the name of the snapshot to clone from. A blank snapshot name will use the latest snapshot.
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CloneFromSnapshotName string `mapstructure:"clone_from_snapshot_name"`
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// This will clone all snapshots if true. It will clone latest snapshot if false.
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CloneAllSnapshots bool `mapstructure:"clone_all_snapshots"`
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// This is the name of the new virtual machine.
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// By default this is "packer-BUILDNAME", where "BUILDNAME" is the name of the build.
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VMName string `mapstructure:"vm_name"`
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// Use differencing disk
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DifferencingDisk bool `mapstructure:"differencing_disk"`
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SwitchName string `mapstructure:"switch_name"`
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CompareCopy bool `mapstructure:"copy_in_compare"`
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SwitchVlanId string `mapstructure:"switch_vlan_id"`
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MacAddress string `mapstructure:"mac_address"`
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VlanId string `mapstructure:"vlan_id"`
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Cpu uint `mapstructure:"cpus"`
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Generation uint `mapstructure:"generation"`
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EnableMacSpoofing bool `mapstructure:"enable_mac_spoofing"`
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EnableDynamicMemory bool `mapstructure:"enable_dynamic_memory"`
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EnableSecureBoot bool `mapstructure:"enable_secure_boot"`
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SecureBootTemplate string `mapstructure:"secure_boot_template"`
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EnableVirtualizationExtensions bool `mapstructure:"enable_virtualization_extensions"`
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TempPath string `mapstructure:"temp_path"`
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Version string `mapstructure:"configuration_version"`
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KeepRegistered bool `mapstructure:"keep_registered"`
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Communicator string `mapstructure:"communicator"`
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SkipCompaction bool `mapstructure:"skip_compaction"`
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SkipExport bool `mapstructure:"skip_export"`
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Headless bool `mapstructure:"headless"`
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ctx interpolate.Context
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}
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// Prepare processes the build configuration parameters.
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func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
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err := config.Decode(&b.config, &config.DecodeOpts{
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Interpolate: true,
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InterpolateContext: &b.config.ctx,
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InterpolateFilter: &interpolate.RenderFilter{
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Exclude: []string{
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"boot_command",
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},
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},
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}, raws...)
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if err != nil {
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return nil, err
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}
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// Accumulate any errors and warnings
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var errs *packer.MultiError
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warnings := make([]string, 0)
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if b.config.RawSingleISOUrl != "" || len(b.config.ISOUrls) > 0 {
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isoWarnings, isoErrs := b.config.ISOConfig.Prepare(&b.config.ctx)
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warnings = append(warnings, isoWarnings...)
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errs = packer.MultiErrorAppend(errs, isoErrs...)
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}
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errs = packer.MultiErrorAppend(errs, b.config.BootConfig.Prepare(&b.config.ctx)...)
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errs = packer.MultiErrorAppend(errs, b.config.FloppyConfig.Prepare(&b.config.ctx)...)
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errs = packer.MultiErrorAppend(errs, b.config.HTTPConfig.Prepare(&b.config.ctx)...)
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errs = packer.MultiErrorAppend(errs, b.config.OutputConfig.Prepare(&b.config.ctx, &b.config.PackerConfig)...)
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errs = packer.MultiErrorAppend(errs, b.config.SSHConfig.Prepare(&b.config.ctx)...)
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errs = packer.MultiErrorAppend(errs, b.config.ShutdownConfig.Prepare(&b.config.ctx)...)
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err = b.checkRamSize()
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if err != nil {
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errs = packer.MultiErrorAppend(errs, err)
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}
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if b.config.VMName == "" {
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b.config.VMName = fmt.Sprintf("packer-%s", b.config.PackerBuildName)
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}
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log.Println(fmt.Sprintf("%s: %v", "VMName", b.config.VMName))
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if b.config.SwitchName == "" {
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b.config.SwitchName = b.detectSwitchName()
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}
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if b.config.Cpu < 1 {
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b.config.Cpu = 1
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}
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if b.config.CloneFromVMName == "" {
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if b.config.CloneFromVMCXPath == "" {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("The clone_from_vm_name must be specified if "+
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"clone_from_vmcx_path is not specified."))
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}
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} else {
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virtualMachineExists, err := powershell.DoesVirtualMachineExist(b.config.CloneFromVMName)
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if err != nil {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("Failed detecting if virtual machine to clone "+
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"from exists: %s", err))
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} else {
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if !virtualMachineExists {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("Virtual machine '%s' to clone from does not "+
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"exist.", b.config.CloneFromVMName))
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} else {
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b.config.Generation, err = powershell.GetVirtualMachineGeneration(b.config.CloneFromVMName)
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if err != nil {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("Failed detecting virtual machine to clone "+
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"from generation: %s", err))
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}
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if b.config.CloneFromSnapshotName != "" {
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virtualMachineSnapshotExists, err := powershell.DoesVirtualMachineSnapshotExist(
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b.config.CloneFromVMName, b.config.CloneFromSnapshotName)
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if err != nil {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("Failed detecting if virtual machine "+
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"snapshot to clone from exists: %s", err))
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} else {
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if !virtualMachineSnapshotExists {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("Virtual machine snapshot '%s' on "+
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"virtual machine '%s' to clone from does not exist.",
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b.config.CloneFromSnapshotName, b.config.CloneFromVMName))
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}
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}
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}
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virtualMachineOn, err := powershell.IsVirtualMachineOn(b.config.CloneFromVMName)
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if err != nil {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("Failed detecting if virtual machine to "+
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"clone is running: %s", err))
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} else {
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if virtualMachineOn {
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warning := fmt.Sprintf("Cloning from a virtual machine that is running.")
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warnings = appendWarnings(warnings, warning)
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}
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}
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}
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}
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}
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if b.config.CloneFromVMCXPath == "" {
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if b.config.CloneFromVMName == "" {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("The clone_from_vmcx_path be specified if "+
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"clone_from_vm_name must is not specified."))
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}
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} else {
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if _, err := os.Stat(b.config.CloneFromVMCXPath); os.IsNotExist(err) {
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("CloneFromVMCXPath does not exist: %s", err))
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}
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}
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if strings.HasSuffix(strings.ToLower(b.config.CloneFromVMCXPath), ".vmcx") {
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// User has provided the vmcx file itself rather than the containing
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// folder.
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if strings.Contains(b.config.CloneFromVMCXPath, "Virtual Machines") {
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keep := strings.Split(b.config.CloneFromVMCXPath, "Virtual Machines")
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b.config.CloneFromVMCXPath = keep[0]
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} else {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("Unable to "+
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"parse the clone_from_vmcx_path to find the vm directory. "+
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"Please provide the path to the folder containing the "+
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"vmcx file, not the file itself. Example: instead of "+
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"C:\\path\\to\\output-hyperv-iso\\Virtual Machines\\filename.vmcx"+
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", provide C:\\path\\to\\output-hyperv-iso\\."))
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}
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}
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}
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if b.config.Generation < 1 || b.config.Generation > 2 {
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b.config.Generation = 1
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}
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if b.config.Generation == 2 {
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if len(b.config.FloppyFiles) > 0 || len(b.config.FloppyDirectories) > 0 {
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err = errors.New("Generation 2 vms don't support floppy drives. Use ISO image instead.")
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errs = packer.MultiErrorAppend(errs, err)
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}
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}
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log.Println(fmt.Sprintf("Using switch %s", b.config.SwitchName))
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log.Println(fmt.Sprintf("%s: %v", "SwitchName", b.config.SwitchName))
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// Errors
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if b.config.GuestAdditionsMode == "" {
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if b.config.GuestAdditionsPath != "" {
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b.config.GuestAdditionsMode = "attach"
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} else {
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b.config.GuestAdditionsPath = os.Getenv("WINDIR") + "\\system32\\vmguest.iso"
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if _, err := os.Stat(b.config.GuestAdditionsPath); os.IsNotExist(err) {
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if err != nil {
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b.config.GuestAdditionsPath = ""
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b.config.GuestAdditionsMode = "none"
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} else {
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b.config.GuestAdditionsMode = "attach"
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}
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}
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}
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}
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if b.config.GuestAdditionsPath == "" && b.config.GuestAdditionsMode == "attach" {
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b.config.GuestAdditionsPath = os.Getenv("WINDIR") + "\\system32\\vmguest.iso"
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if _, err := os.Stat(b.config.GuestAdditionsPath); os.IsNotExist(err) {
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if err != nil {
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b.config.GuestAdditionsPath = ""
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}
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}
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}
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for _, isoPath := range b.config.SecondaryDvdImages {
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if _, err := os.Stat(isoPath); os.IsNotExist(err) {
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Secondary Dvd image does not exist: %s", err))
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}
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}
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}
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numberOfIsos := len(b.config.SecondaryDvdImages)
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if b.config.GuestAdditionsMode == "attach" {
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if _, err := os.Stat(b.config.GuestAdditionsPath); os.IsNotExist(err) {
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Guest additions iso does not exist: %s", err))
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}
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}
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numberOfIsos = numberOfIsos + 1
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}
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if b.config.Generation < 2 && numberOfIsos > 2 {
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if b.config.GuestAdditionsMode == "attach" {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("There are only 2 ide controllers available, so "+
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"we can't support guest additions and these secondary dvds: %s",
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strings.Join(b.config.SecondaryDvdImages, ", ")))
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} else {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("There are only 2 ide controllers available, so "+
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"we can't support these secondary dvds: %s",
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strings.Join(b.config.SecondaryDvdImages, ", ")))
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}
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} else if b.config.Generation > 1 && len(b.config.SecondaryDvdImages) > 16 {
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if b.config.GuestAdditionsMode == "attach" {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("There are not enough drive letters available for "+
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"scsi (limited to 16), so we can't support guest additions and these secondary dvds: %s",
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strings.Join(b.config.SecondaryDvdImages, ", ")))
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} else {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("There are not enough drive letters available for "+
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"scsi (limited to 16), so we can't support these secondary dvds: %s",
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strings.Join(b.config.SecondaryDvdImages, ", ")))
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}
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}
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if b.config.EnableVirtualizationExtensions {
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hasVirtualMachineVirtualizationExtensions, err := powershell.HasVirtualMachineVirtualizationExtensions()
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if err != nil {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("Failed detecting virtual machine virtualization "+
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"extensions support: %s", err))
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} else {
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if !hasVirtualMachineVirtualizationExtensions {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("This version of Hyper-V does not support "+
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"virtual machine virtualization extension. Please use Windows 10 or Windows Server 2016 "+
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"or newer."))
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}
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}
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}
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// Warnings
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if b.config.ShutdownCommand == "" {
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warnings = appendWarnings(warnings,
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"A shutdown_command was not specified. Without a shutdown command, Packer\n"+
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"will forcibly halt the virtual machine, which may result in data loss.")
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}
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warning := b.checkHostAvailableMemory()
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if warning != "" {
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warnings = appendWarnings(warnings, warning)
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}
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if b.config.EnableVirtualizationExtensions {
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if b.config.EnableDynamicMemory {
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warning = fmt.Sprintf("For nested virtualization, when virtualization extension is enabled, " +
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"dynamic memory should not be allowed.")
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warnings = appendWarnings(warnings, warning)
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}
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if !b.config.EnableMacSpoofing {
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warning = fmt.Sprintf("For nested virtualization, when virtualization extension is enabled, " +
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"mac spoofing should be allowed.")
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warnings = appendWarnings(warnings, warning)
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}
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if b.config.RamSize < MinNestedVirtualizationRamSize {
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warning = fmt.Sprintf("For nested virtualization, when virtualization extension is enabled, " +
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"there should be 4GB or more memory set for the vm, otherwise Hyper-V may fail to start " +
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"any nested VMs.")
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warnings = appendWarnings(warnings, warning)
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}
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}
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if b.config.SwitchVlanId != "" {
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if b.config.SwitchVlanId != b.config.VlanId {
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warning = fmt.Sprintf("Switch network adaptor vlan should match virtual machine network adaptor " +
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"vlan. The switch will not be able to see traffic from the VM.")
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warnings = appendWarnings(warnings, warning)
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}
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}
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if errs != nil && len(errs.Errors) > 0 {
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return warnings, errs
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}
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return warnings, nil
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}
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// Run executes a Packer build and returns a packer.Artifact representing
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// a Hyperv appliance.
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func (b *Builder) Run(ctx context.Context, ui packer.Ui, hook packer.Hook) (packer.Artifact, error) {
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// Create the driver that we'll use to communicate with Hyperv
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driver, err := hypervcommon.NewHypervPS4Driver()
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if err != nil {
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return nil, fmt.Errorf("Failed creating Hyper-V driver: %s", err)
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}
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// Set up the state.
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state := new(multistep.BasicStateBag)
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state.Put("config", &b.config)
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state.Put("debug", b.config.PackerDebug)
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state.Put("driver", driver)
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state.Put("hook", hook)
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state.Put("ui", ui)
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steps := []multistep.Step{
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&hypervcommon.StepCreateBuildDir{
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TempPath: b.config.TempPath,
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},
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&common.StepOutputDir{
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Force: b.config.PackerForce,
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Path: b.config.OutputDir,
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},
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}
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if b.config.RawSingleISOUrl != "" || len(b.config.ISOUrls) > 0 {
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steps = append(steps,
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&common.StepDownload{
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Checksum: b.config.ISOChecksum,
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ChecksumType: b.config.ISOChecksumType,
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Description: "ISO",
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ResultKey: "iso_path",
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Url: b.config.ISOUrls,
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Extension: b.config.TargetExtension,
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TargetPath: b.config.TargetPath,
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},
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)
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}
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steps = append(steps,
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&common.StepCreateFloppy{
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Files: b.config.FloppyFiles,
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Directories: b.config.FloppyConfig.FloppyDirectories,
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},
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&common.StepHTTPServer{
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HTTPDir: b.config.HTTPDir,
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HTTPPortMin: b.config.HTTPPortMin,
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HTTPPortMax: b.config.HTTPPortMax,
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},
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&hypervcommon.StepCreateSwitch{
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SwitchName: b.config.SwitchName,
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},
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&hypervcommon.StepCloneVM{
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CloneFromVMCXPath: b.config.CloneFromVMCXPath,
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CloneFromVMName: b.config.CloneFromVMName,
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CloneFromSnapshotName: b.config.CloneFromSnapshotName,
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CloneAllSnapshots: b.config.CloneAllSnapshots,
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VMName: b.config.VMName,
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SwitchName: b.config.SwitchName,
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CompareCopy: b.config.CompareCopy,
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RamSize: b.config.RamSize,
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Cpu: b.config.Cpu,
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EnableMacSpoofing: b.config.EnableMacSpoofing,
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EnableDynamicMemory: b.config.EnableDynamicMemory,
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EnableSecureBoot: b.config.EnableSecureBoot,
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SecureBootTemplate: b.config.SecureBootTemplate,
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EnableVirtualizationExtensions: b.config.EnableVirtualizationExtensions,
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MacAddress: b.config.MacAddress,
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KeepRegistered: b.config.KeepRegistered,
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},
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&hypervcommon.StepEnableIntegrationService{},
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&hypervcommon.StepMountDvdDrive{
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Generation: b.config.Generation,
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},
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&hypervcommon.StepMountFloppydrive{
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Generation: b.config.Generation,
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},
|
|
|
|
&hypervcommon.StepMountGuestAdditions{
|
|
GuestAdditionsMode: b.config.GuestAdditionsMode,
|
|
GuestAdditionsPath: b.config.GuestAdditionsPath,
|
|
Generation: b.config.Generation,
|
|
},
|
|
|
|
&hypervcommon.StepMountSecondaryDvdImages{
|
|
IsoPaths: b.config.SecondaryDvdImages,
|
|
Generation: b.config.Generation,
|
|
},
|
|
|
|
&hypervcommon.StepConfigureVlan{
|
|
VlanId: b.config.VlanId,
|
|
SwitchVlanId: b.config.SwitchVlanId,
|
|
},
|
|
|
|
&hypervcommon.StepRun{
|
|
Headless: b.config.Headless,
|
|
},
|
|
|
|
&hypervcommon.StepTypeBootCommand{
|
|
BootCommand: b.config.FlatBootCommand(),
|
|
BootWait: b.config.BootWait,
|
|
SwitchName: b.config.SwitchName,
|
|
Ctx: b.config.ctx,
|
|
GroupInterval: b.config.BootConfig.BootGroupInterval,
|
|
},
|
|
|
|
// configure the communicator ssh, winrm
|
|
&communicator.StepConnect{
|
|
Config: &b.config.SSHConfig.Comm,
|
|
Host: hypervcommon.CommHost(b.config.SSHConfig.Comm.SSHHost),
|
|
SSHConfig: b.config.SSHConfig.Comm.SSHConfigFunc(),
|
|
},
|
|
|
|
// provision requires communicator to be setup
|
|
&common.StepProvision{},
|
|
|
|
// Remove ephemeral SSH keys, if using
|
|
&common.StepCleanupTempKeys{
|
|
Comm: &b.config.SSHConfig.Comm,
|
|
},
|
|
|
|
&hypervcommon.StepShutdown{
|
|
Command: b.config.ShutdownCommand,
|
|
Timeout: b.config.ShutdownTimeout,
|
|
},
|
|
|
|
// wait for the vm to be powered off
|
|
&hypervcommon.StepWaitForPowerOff{},
|
|
|
|
// remove the secondary dvd images
|
|
// after we power down
|
|
&hypervcommon.StepUnmountSecondaryDvdImages{},
|
|
&hypervcommon.StepUnmountGuestAdditions{},
|
|
&hypervcommon.StepUnmountDvdDrive{},
|
|
&hypervcommon.StepUnmountFloppyDrive{
|
|
Generation: b.config.Generation,
|
|
},
|
|
&hypervcommon.StepCompactDisk{
|
|
SkipCompaction: b.config.SkipCompaction,
|
|
},
|
|
&hypervcommon.StepExportVm{
|
|
OutputDir: b.config.OutputDir,
|
|
SkipExport: b.config.SkipExport,
|
|
},
|
|
&hypervcommon.StepCollateArtifacts{
|
|
OutputDir: b.config.OutputDir,
|
|
SkipExport: b.config.SkipExport,
|
|
},
|
|
|
|
// the clean up actions for each step will be executed reverse order
|
|
)
|
|
|
|
// Run the steps.
|
|
b.runner = common.NewRunner(steps, b.config.PackerConfig, ui)
|
|
b.runner.Run(ctx, state)
|
|
|
|
// Report any errors.
|
|
if rawErr, ok := state.GetOk("error"); ok {
|
|
return nil, rawErr.(error)
|
|
}
|
|
|
|
// If we were interrupted or cancelled, then just exit.
|
|
if _, ok := state.GetOk(multistep.StateCancelled); ok {
|
|
return nil, errors.New("Build was cancelled.")
|
|
}
|
|
|
|
if _, ok := state.GetOk(multistep.StateHalted); ok {
|
|
return nil, errors.New("Build was halted.")
|
|
}
|
|
|
|
return hypervcommon.NewArtifact(b.config.OutputDir)
|
|
}
|
|
|
|
// Cancel.
|
|
|
|
func appendWarnings(slice []string, data ...string) []string {
|
|
m := len(slice)
|
|
n := m + len(data)
|
|
if n > cap(slice) { // if necessary, reallocate
|
|
// allocate double what's needed, for future growth.
|
|
newSlice := make([]string, (n+1)*2)
|
|
copy(newSlice, slice)
|
|
slice = newSlice
|
|
}
|
|
slice = slice[0:n]
|
|
copy(slice[m:n], data)
|
|
return slice
|
|
}
|
|
|
|
func (b *Builder) checkRamSize() error {
|
|
if b.config.RamSize == 0 {
|
|
b.config.RamSize = DefaultRamSize
|
|
}
|
|
|
|
log.Println(fmt.Sprintf("%s: %v", "RamSize", b.config.RamSize))
|
|
|
|
if b.config.RamSize < MinRamSize {
|
|
return fmt.Errorf("memory: Virtual machine requires memory size >= %v MB, but defined: %v",
|
|
MinRamSize, b.config.RamSize)
|
|
} else if b.config.RamSize > MaxRamSize {
|
|
return fmt.Errorf("memory: Virtual machine requires memory size <= %v MB, but defined: %v",
|
|
MaxRamSize, b.config.RamSize)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (b *Builder) checkHostAvailableMemory() string {
|
|
powershellAvailable, _, _ := powershell.IsPowershellAvailable()
|
|
|
|
if powershellAvailable {
|
|
freeMB := powershell.GetHostAvailableMemory()
|
|
|
|
if (freeMB - float64(b.config.RamSize)) < LowRam {
|
|
return fmt.Sprintf("Hyper-V might fail to create a VM if there is not enough free memory in the system.")
|
|
}
|
|
}
|
|
|
|
return ""
|
|
}
|
|
|
|
func (b *Builder) detectSwitchName() string {
|
|
powershellAvailable, _, _ := powershell.IsPowershellAvailable()
|
|
|
|
if powershellAvailable {
|
|
// no switch name, try to get one attached to a online network adapter
|
|
onlineSwitchName, err := hyperv.GetExternalOnlineVirtualSwitch()
|
|
if onlineSwitchName != "" && err == nil {
|
|
return onlineSwitchName
|
|
}
|
|
}
|
|
|
|
return fmt.Sprintf("packer-%s", b.config.PackerBuildName)
|
|
}
|