92 lines
2.5 KiB
Go
92 lines
2.5 KiB
Go
package qemu
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import (
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"context"
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"fmt"
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"log"
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"path/filepath"
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"github.com/hashicorp/packer/packer-plugin-sdk/multistep"
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packersdk "github.com/hashicorp/packer/packer-plugin-sdk/packer"
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)
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// This step creates the virtual disk that will be used as the
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// hard drive for the virtual machine.
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type stepCreateDisk struct {
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AdditionalDiskSize []string
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DiskImage bool
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DiskSize string
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Format string
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OutputDir string
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UseBackingFile bool
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VMName string
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QemuImgArgs QemuImgArgs
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}
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func (s *stepCreateDisk) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
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driver := state.Get("driver").(Driver)
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ui := state.Get("ui").(packersdk.Ui)
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name := s.VMName
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if len(s.AdditionalDiskSize) > 0 || s.UseBackingFile {
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ui.Say("Creating required virtual machine disks")
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}
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// The 'main' or 'default' disk
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diskFullPaths := []string{filepath.Join(s.OutputDir, name)}
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diskSizes := []string{s.DiskSize}
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// Additional disks
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if len(s.AdditionalDiskSize) > 0 {
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for i, diskSize := range s.AdditionalDiskSize {
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path := filepath.Join(s.OutputDir, fmt.Sprintf("%s-%d", name, i+1))
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diskFullPaths = append(diskFullPaths, path)
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diskSizes = append(diskSizes, diskSize)
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}
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}
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// Create all required disks
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for i, diskFullPath := range diskFullPaths {
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if s.DiskImage && !s.UseBackingFile && i == 0 {
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// Let the copy disk step (step_copy_disk.go) create the 'main' or
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// 'default' disk.
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continue
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}
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log.Printf("[INFO] Creating disk with Path: %s and Size: %s", diskFullPath, diskSizes[i])
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command := s.buildCreateCommand(diskFullPath, diskSizes[i], i, state)
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if err := driver.QemuImg(command...); err != nil {
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err := fmt.Errorf("Error creating hard drive: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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}
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// Stash the disk paths so we can retrieve later
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state.Put("qemu_disk_paths", diskFullPaths)
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return multistep.ActionContinue
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}
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func (s *stepCreateDisk) buildCreateCommand(path string, size string, i int, state multistep.StateBag) []string {
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command := []string{"create", "-f", s.Format}
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if s.DiskImage && s.UseBackingFile && i == 0 {
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// Use a backing file for the 'main' or 'default' disk
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isoPath := state.Get("iso_path").(string)
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command = append(command, "-b", isoPath)
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}
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// add user-provided convert args
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command = append(command, s.QemuImgArgs.Create...)
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// add target path and size.
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command = append(command, path, size)
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return command
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}
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func (s *stepCreateDisk) Cleanup(state multistep.StateBag) {}
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