在可用区或区域之间移动虚拟机实例

Linux Windows

---

本文档介绍如何在可用区或区域之间移动虚拟机 (VM) 实例。

准备工作

• 阅读地区文档。
• 如果您尚未设置身份验证，请进行设置。身份验证是通过其进行身份验证以访问 Google Cloud 服务和 API 的过程。如需从本地开发环境运行代码或示例，您可以按如下方式向 Compute Engine 进行身份验证。
  

  Select the tab for how you plan to use the samples on this page:

  gcloud

  1. Install the Google Cloud CLI, then initialize it by running the following command:

     gcloud init

     Note: If you installed the gcloud CLI previously, make sure you have the latest version by running gcloud components update.
  2. Set a default region and zone.

  Go

  如需在本地开发环境中使用本页面上的 Go 示例，请安装并初始化 gcloud CLI，然后使用您的用户凭据设置应用默认凭据。

  1. Install the Google Cloud CLI.

  2. To initialize the gcloud CLI, run the following command:

     gcloud init

  3. If you're using a local shell, then create local authentication credentials for your user account:

     gcloud auth application-default login

     You don't need to do this if you're using Cloud Shell.

  如需了解详情，请参阅 Set up authentication for a local development environment。

  Java

  如需在本地开发环境中使用本页面上的 Java 示例，请安装并初始化 gcloud CLI，然后使用您的用户凭据设置应用默认凭据。

  1. Install the Google Cloud CLI.

  2. To initialize the gcloud CLI, run the following command:

     gcloud init

  3. If you're using a local shell, then create local authentication credentials for your user account:

     gcloud auth application-default login

     You don't need to do this if you're using Cloud Shell.

  如需了解详情，请参阅 Set up authentication for a local development environment。

  Node.js

  如需在本地开发环境中使用本页面上的 Node.js 示例，请安装并初始化 gcloud CLI，然后使用您的用户凭据设置应用默认凭据。

  1. Install the Google Cloud CLI.

  2. To initialize the gcloud CLI, run the following command:

     gcloud init

  3. If you're using a local shell, then create local authentication credentials for your user account:

     gcloud auth application-default login

     You don't need to do this if you're using Cloud Shell.

  如需了解详情，请参阅 Set up authentication for a local development environment。

  Python

  如需在本地开发环境中使用本页面上的 Python 示例，请安装并初始化 gcloud CLI，然后使用您的用户凭据设置应用默认凭据。

  1. Install the Google Cloud CLI.

  2. To initialize the gcloud CLI, run the following command:

     gcloud init

  3. If you're using a local shell, then create local authentication credentials for your user account:

     gcloud auth application-default login

     You don't need to do this if you're using Cloud Shell.

  如需了解详情，请参阅 Set up authentication for a local development environment。

要求

本部分列出了在可用区和区域之间移动虚拟机的要求：

• 项目配额。您的项目必须具有足够的配额才能执行以下操作：

  • 创建新快照。
  • 升级任何临时外部 IP 地址。

  • 在目标区域中创建新的虚拟机和磁盘。

    例如，如果您要移动的虚拟机挂接了三个磁盘，则需要足够的配额来创建三个临时永久性磁盘快照和三个新磁盘。创建新磁盘后，您可以删除临时快照。

  查看配额页面，确保您有足够的配额用于上述资源。如需了解详情，请参阅了解配额。

• Persistent Disk。挂接到要移动的虚拟机的永久性磁盘未挂接到其他虚拟机。

• 本地 SSD。本地 SSD 用于临时存储，本地 SSD 上的数据不会通过手动虚拟机终止来保留。如果您需要保留本地 SSD 数据，请使用永久性磁盘等持久性存储选项对其进行复制。

• GPU。如果您的虚拟机包含 GPU，请验证并确保您要使用的 GPU 在虚拟机的目标可用区中可用。有关 GPU 及其相应可用可用区的列表，请参阅 Compute Engine 上的 GPU。

• 子网。如果您要在区域之间移动虚拟机，例如在 us-west1-a 和 asia-south1-b 之间，并且您的虚拟机属于子网，则必须为虚拟机选择新的子网。如需了解如何创建子网，请参阅添加子网。

  注意：本部分介绍的移动虚拟机的方法也适用于处于“已终止”状态的虚拟机或使用 UEFI 固件的安全强化型虚拟机。

限制

如果您跨区域移动虚拟机，则无法保留虚拟机的临时内部或外部 IP 地址。您必须在重新创建虚拟机时选择新的 IP 地址。

资源属性

如需移动虚拟机，您必须关停该虚拟机，将其移至目标可用区或区域，然后重启。移动虚拟机后，请更新您对原始资源的任何引用，例如指向旧虚拟机的任何目标虚拟机或目标池。

在移动过程中，虚拟机和磁盘的某些服务器生成的属性会发生变化。

针对虚拟机更改的属性

下表介绍了针对虚拟机更改的属性：

属性名称	更改
内部 IP 地址	系统通常会分配新的内部 IP 地址，但虚拟机可能会保留原始的内部 IP 地址。
外部 IP 地址	如果在同一区域内的可用区之间移动虚拟机，则外部 IP 地址将保持不变。否则，请为虚拟机实例选择其他外部 IP 地址。
CPU 平台	根据目标可用区中的可用 CPU 平台，您的虚拟机在移动后可能具有不同的 CPU 平台。如需查看各地区中 CPU 平台的完整列表，请参阅可用区域和地区。
网络/子网	如果您的虚拟机属于某个子网，并且您要跨区域移动虚拟机，则必须为虚拟机选择新的子网。在同一区域内跨可用区移动的虚拟机保留相同的子网。

针对磁盘更改的属性

下表介绍了针对磁盘更改的属性：

属性名称	更改
来源快照	新磁盘的来源快照设置为移动期间创建的临时快照。
来源快照 ID	来源快照 ID 设置为临时快照的 ID。
来源映像	来源映像字段为空。
映像 ID	映像 ID 为空。
上次分离时间戳	上次分离时间戳为空。
上次附加时间戳	上次挂接时间戳更改为新磁盘挂接到新实例时的时间戳。

针对虚拟机和磁盘更改的属性

下表介绍了针对虚拟机和磁盘更改的属性：

属性名称	更改
ID	生成新的资源 ID。
创建时间戳	生成新的创建时间戳。
地区资源网址	所有地区资源网址都会更改，以反映目标地区。下面的列表显示了更改的资源网址： 虚拟机的来源磁盘网址 虚拟机的机器类型网址 页内链接网址 可用区网址 磁盘类型网址 磁盘的 users[] 列表中所列虚拟机的任何网址

跨可用区或区域移动虚拟机

如需跨可用区或区域移动虚拟机，您可以执行以下操作：

1. 创建来源虚拟机的机器映像。
2. 通过位于其他可用区或区域的机器映像创建虚拟机。

以下示例展示了如何跨可用区移动虚拟机。

gcloud

在本示例中，您将名为 myinstance 的虚拟机（具有两个名为 mybootdisk 和 mydatadisk 的永久性磁盘）从 europe-west1-c 移动到 us-west1-b。

1. 找出与您要移动的虚拟机关联的磁盘。

   gcloud compute instances describe myinstance --format="list(name,status,disks)"
   

   在此示例中，您将找到 myinstance 虚拟机的以下两个关联磁盘：

   • 名为 mybootdisk 的启动磁盘
   • 名为 mydatadisk 的数据磁盘

2. 将 mybootdisk 和 mydatadisk 的自动删除状态设置为 false，以确保在删除虚拟机时不会自动删除磁盘。

   gcloud compute instances set-disk-auto-delete myinstance --zone europe-west1-c \
       --disk mybootdisk --no-auto-delete

   如果状态已更新，则 gcloud compute 将返回响应 Updated [...]。如果自动删除状态原来已设置为 false，则 gcloud compute 将返回以下响应：

   No change requested; skipping update for [myinstance].

3. （可选）保存虚拟机元数据。

   删除虚拟机时，虚拟机元数据也将一并移除。您可以将该信息保存在单独的文件中，然后将虚拟机元数据重新应用到新虚拟机。

   按照以下方式描述虚拟机的元数据：

   gcloud compute instances describe myinstance --zone europe-west1-c

   将内容保存到单独文件中。

4. 使用永久性磁盘快照创建数据的备份。

   为保险起见，请在永久性磁盘仍挂接到虚拟机时使用永久性磁盘快照创建数据的备份。在截取快照之前，请务必遵循快照最佳做法，确保快照与永久性磁盘的状态一致。

   注意：如果您运行的是 Windows 虚拟机，必须先终止该虚拟机，然后才能创建快照。按照步骤为 Windows 虚拟机创建快照。

   清空磁盘缓冲区后，按如下所示创建快照：

   gcloud compute disks snapshot mybootdisk mydatadisk \
       --snapshot-names backup-mybootsnapshot,backup-mydatasnapshot \
       --zone europe-west1-c 

   如需验证快照是否已创建，请运行 gcloud compute snapshots list。

5. （可选）如果您要跨同一区域内的多个可用区移动虚拟机，并且希望保留其临时内部或外部 IP 地址，请将该内部或外部 IP 地址升级为静态 IP 地址，以便稍后可以重复使用。

   注意：如果您要跨区域移动虚拟机，则无法保留虚拟机的临时内部或外部 IP 地址。您必须在重新创建虚拟机时选择新的 IP 地址。

6. 删除您的虚拟机。

   注意：如果您已在上一步中终止了 Windows 虚拟机，请跳过此步骤。

   删除虚拟机会彻底关停虚拟机并分离任何永久性磁盘。

   gcloud compute instances delete myinstance --zone europe-west1-c

   gcloud 会提示您确认删除：

   
   The following VMs are deleted. Any attached disks configured to
   be auto-deleted are deleted unless they are attached to any other
   VMs or the `--keep-disks` flag is given and specifies them for keeping.
   Deleting a disk is irreversible and any data on the disk is lost.
   — [myinstance] in [europe-west1-c]
   Do you want to continue (Y/n)?

   由于您先前在此过程中关闭了磁盘的自动删除状态，因此，请输入 Y 以继续并忽略该警告。

7. 接着，创建启动磁盘和数据磁盘的另一个快照。

   gcloud compute disks snapshot mybootdisk mydatadisk \
       --snapshot-names mybootsnapshot,mydatasnapshot \
       --zone europe-west1-c 

   Created [.../mydatasnapshot].
   Created [.../mybootsnapshot].

8. （可选）删除永久性磁盘。

   如果打算为新磁盘重复使用永久性磁盘的名称，必须删除现有磁盘以释放这些名称。此外，删除磁盘还可以节省永久性磁盘存储费用。

   如果您不打算重复使用相同的磁盘名称，您无需将其删除。

   gcloud compute disks delete mybootdisk mydatadisk --zone europe-west1-c

9. 使用创建的快照在 us-west1-b 中创建新的永久性磁盘。首先创建启动磁盘。

   gcloud compute disks create mybootdiskb --source-snapshot mybootsnapshot \
       --zone us-west1-b

   Created [.../mybootdiskb].
   NAME        ZONE           SIZE_GB TYPE        STATUS
   mybootdiskb us-west1-b     100     pd-standard READY

   然后创建数据磁盘。

   gcloud compute disks create mydatadiskb --source-snapshot mydatasnapshot \
       --zone us-west1-b

   Created [.../mydatadiskb].
   NAME        ZONE           SIZE_GB TYPE        STATUS
   mydatadiskb us-west1-b 4000    pd-standard READY

10. 在 us-west1-b 中重新创建虚拟机。

    • 如果您选择将虚拟机元数据保存在一个文件中，例如 myinstance.describe 中，则可以使用它在虚拟机上设置相同的元数据。

    • 如果虚拟机具有静态外部 IP 地址，您可以通过指定 --address [ADDRESS] 选项将该地址重新分配给新虚拟机。如果您要跨区域移动虚拟机，则必须为新的虚拟机实例选择其他外部 IP 地址。

    • 如果虚拟机具有静态内部 IP 地址，您可以通过指定 --private-network-ip ADDRESS 选项将该地址重新分配给新虚拟机。如果您要跨区域移动虚拟机，则必须为新的虚拟机实例选择其他内部 IP 地址。

    • 如果您的虚拟机包含 GPU，请使用 --accelerator 选项将 GPU 添加到虚拟机。

    • 如果虚拟机使用特定子网，请添加 --subnet [SUBNET_NAME] 标志。

    如需了解其他标志的完整列表，请参阅 gcloud compute 实例创建。

    gcloud compute instances create myinstanceb --machine-type n1-standard-4 \
        --zone us-west1-b \
        --disk name=mybootdiskb,boot=yes,mode=rw \
        --disk name=mydatadiskb,mode=rw 

    Created [.../myinstanceb].
    NAME        ZONE           MACHINE_TYPE  INTERNAL_IP    EXTERNAL_IP     STATUS
    myinstanceb us-west1-b     n1-standard-4 10.240.173.229 146.148.112.106 RUNNING

11. （可选）删除永久性磁盘快照。

    在您确认虚拟机已完成移动后，可删除创建的临时快照以节省存储费用。

    gcloud compute snapshots delete mybootsnapshot mydatasnapshot

    如果您不再需要备份快照，也请删除这些快照：

    gcloud compute snapshots delete backup-mybootsnapshot backup-mydatasnapshot

Go

1. 获取虚拟机的详细信息，并找到挂接到虚拟机的磁盘。

   import (
   	"context"
   	"fmt"
   	"io"
   
   	compute "cloud.google.com/go/compute/apiv1"
   	computepb "cloud.google.com/go/compute/apiv1/computepb"
   )
   
   // getInstance prints a name of a VM instance in the given zone in the specified project.
   func getInstance(w io.Writer, projectID, zone, instanceName string) error {
   	// projectID := "your_project_id"
   	// zone := "europe-central2-b"
   	// instanceName := "your_instance_name"
   
   	ctx := context.Background()
   	instancesClient, err := compute.NewInstancesRESTClient(ctx)
   	if err != nil {
   		return fmt.Errorf("NewInstancesRESTClient: %w", err)
   	}
   	defer instancesClient.Close()
   
   	reqInstance := &computepb.GetInstanceRequest{
   		Project:  projectID,
   		Zone:     zone,
   		Instance: instanceName,
   	}
   
   	instance, err := instancesClient.Get(ctx, reqInstance)
   	if err != nil {
   		return fmt.Errorf("unable to get instance: %w", err)
   	}
   
   	fmt.Fprintf(w, "Instance: %s\n", instance.GetName())
   
   	return nil
   }
   

2. 将启动磁盘和数据磁盘的自动删除状态设置为 false，以确保在删除虚拟机时不会自动删除磁盘。

   import (
   	"context"
   	"fmt"
   	"io"
   
   	compute "cloud.google.com/go/compute/apiv1"
   	computepb "cloud.google.com/go/compute/apiv1/computepb"
   )
   
   // setDiskAutodelete sets the autodelete flag of a disk to given value.
   func setDiskAutoDelete(
   	w io.Writer,
   	projectID, zone, instanceName, diskName string, autoDelete bool,
   ) error {
   	// projectID := "your_project_id"
   	// zone := "us-west3-b"
   	// instanceName := "your_instance_name"
   	// diskName := "your_disk_name"
   	// autoDelete := true
   
   	ctx := context.Background()
   	instancesClient, err := compute.NewInstancesRESTClient(ctx)
   	if err != nil {
   		return fmt.Errorf("NewInstancesRESTClient: %w", err)
   	}
   	defer instancesClient.Close()
   
   	getInstanceReq := &computepb.GetInstanceRequest{
   		Project:  projectID,
   		Zone:     zone,
   		Instance: instanceName,
   	}
   
   	instance, err := instancesClient.Get(ctx, getInstanceReq)
   	if err != nil {
   		return fmt.Errorf("unable to get instance: %w", err)
   	}
   
   	diskExists := false
   
   	for _, disk := range instance.GetDisks() {
   		if disk.GetDeviceName() == diskName {
   			diskExists = true
   			break
   		}
   	}
   
   	if !diskExists {
   		return fmt.Errorf(
   			"instance %s doesn't have a disk named %s attached",
   			instanceName,
   			diskName,
   		)
   	}
   
   	req := &computepb.SetDiskAutoDeleteInstanceRequest{
   		Project:    projectID,
   		Zone:       zone,
   		Instance:   instanceName,
   		DeviceName: diskName,
   		AutoDelete: autoDelete,
   	}
   
   	op, err := instancesClient.SetDiskAutoDelete(ctx, req)
   	if err != nil {
   		return fmt.Errorf("unable to set disk autodelete field: %w", err)
   	}
   
   	if err = op.Wait(ctx); err != nil {
   		return fmt.Errorf("unable to wait for the operation: %w", err)
   	}
   
   	fmt.Fprintf(w, "disk autoDelete field updated.\n")
   
   	return nil
   }
   

3. 使用永久性磁盘快照创建数据的备份。

   为保险起见，请在永久性磁盘仍挂接到虚拟机时使用永久性磁盘快照创建数据的备份。在截取快照之前，请务必遵循快照最佳做法，确保快照与永久性磁盘的状态一致。

   注意：如果您运行的是 Windows 虚拟机，必须先终止该虚拟机，然后才能创建快照。按照步骤为 Windows 虚拟机创建快照。

   清空磁盘缓冲区后，按如下所示创建快照：

   import (
   	"context"
   	"fmt"
   	"io"
   
   	compute "cloud.google.com/go/compute/apiv1"
   	computepb "cloud.google.com/go/compute/apiv1/computepb"
   	"google.golang.org/protobuf/proto"
   )
   
   // createSnapshot creates a snapshot of a disk.
   func createSnapshot(
   	w io.Writer,
   	projectID, diskName, snapshotName, zone, region, location, diskProjectID string,
   ) error {
   	// projectID := "your_project_id"
   	// diskName := "your_disk_name"
   	// snapshotName := "your_snapshot_name"
   	// zone := "europe-central2-b"
   	// region := "eupore-central2"
   	// location = "eupore-central2"
   	// diskProjectID = "YOUR_DISK_PROJECT_ID"
   
   	ctx := context.Background()
   
   	snapshotsClient, err := compute.NewSnapshotsRESTClient(ctx)
   	if err != nil {
   		return fmt.Errorf("NewSnapshotsRESTClient: %w", err)
   	}
   	defer snapshotsClient.Close()
   
   	if zone == "" && region == "" {
   		return fmt.Errorf("you need to specify `zone` or `region` for this function to work")
   	}
   
   	if zone != "" && region != "" {
   		return fmt.Errorf("you can't set both `zone` and `region` parameters")
   	}
   
   	if diskProjectID == "" {
   		diskProjectID = projectID
   	}
   
   	disk := &computepb.Disk{}
   	locations := []string{}
   	if location != "" {
   		locations = append(locations, location)
   	}
   
   	if zone != "" {
   		disksClient, err := compute.NewDisksRESTClient(ctx)
   		if err != nil {
   			return fmt.Errorf("NewDisksRESTClient: %w", err)
   		}
   		defer disksClient.Close()
   
   		getDiskReq := &computepb.GetDiskRequest{
   			Project: projectID,
   			Zone:    zone,
   			Disk:    diskName,
   		}
   
   		disk, err = disksClient.Get(ctx, getDiskReq)
   		if err != nil {
   			return fmt.Errorf("unable to get disk: %w", err)
   		}
   	} else {
   		regionDisksClient, err := compute.NewRegionDisksRESTClient(ctx)
   		if err != nil {
   			return fmt.Errorf("NewRegionDisksRESTClient: %w", err)
   		}
   		defer regionDisksClient.Close()
   
   		getDiskReq := &computepb.GetRegionDiskRequest{
   			Project: projectID,
   			Region:  region,
   			Disk:    diskName,
   		}
   
   		disk, err = regionDisksClient.Get(ctx, getDiskReq)
   		if err != nil {
   			return fmt.Errorf("unable to get disk: %w", err)
   		}
   	}
   
   	req := &computepb.InsertSnapshotRequest{
   		Project: projectID,
   		SnapshotResource: &computepb.Snapshot{
   			Name:             proto.String(snapshotName),
   			SourceDisk:       proto.String(disk.GetSelfLink()),
   			StorageLocations: locations,
   		},
   	}
   
   	op, err := snapshotsClient.Insert(ctx, req)
   	if err != nil {
   		return fmt.Errorf("unable to create snapshot: %w", err)
   	}
   
   	if err = op.Wait(ctx); err != nil {
   		return fmt.Errorf("unable to wait for the operation: %w", err)
   	}
   
   	fmt.Fprintf(w, "Snapshot created\n")
   
   	return nil
   }
   

4. 从源可用区中删除虚拟机。

   import (
   	"context"
   	"fmt"
   	"io"
   
   	compute "cloud.google.com/go/compute/apiv1"
   	computepb "cloud.google.com/go/compute/apiv1/computepb"
   )
   
   // deleteInstance sends a delete request to the Compute Engine API and waits for it to complete.
   func deleteInstance(w io.Writer, projectID, zone, instanceName string) error {
   	// projectID := "your_project_id"
   	// zone := "europe-central2-b"
   	// instanceName := "your_instance_name"
   	ctx := context.Background()
   	instancesClient, err := compute.NewInstancesRESTClient(ctx)
   	if err != nil {
   		return fmt.Errorf("NewInstancesRESTClient: %w", err)
   	}
   	defer instancesClient.Close()
   
   	req := &computepb.DeleteInstanceRequest{
   		Project:  projectID,
   		Zone:     zone,
   		Instance: instanceName,
   	}
   
   	op, err := instancesClient.Delete(ctx, req)
   	if err != nil {
   		return fmt.Errorf("unable to delete instance: %w", err)
   	}
   
   	if err = op.Wait(ctx); err != nil {
   		return fmt.Errorf("unable to wait for the operation: %w", err)
   	}
   
   	fmt.Fprintf(w, "Instance deleted\n")
   
   	return nil
   }
   

5. 接着，创建启动磁盘和数据磁盘的另一个快照。

   import (
   	"context"
   	"fmt"
   	"io"
   
   	compute "cloud.google.com/go/compute/apiv1"
   	computepb "cloud.google.com/go/compute/apiv1/computepb"
   	"google.golang.org/protobuf/proto"
   )
   
   // createSnapshot creates a snapshot of a disk.
   func createSnapshot(
   	w io.Writer,
   	projectID, diskName, snapshotName, zone, region, location, diskProjectID string,
   ) error {
   	// projectID := "your_project_id"
   	// diskName := "your_disk_name"
   	// snapshotName := "your_snapshot_name"
   	// zone := "europe-central2-b"
   	// region := "eupore-central2"
   	// location = "eupore-central2"
   	// diskProjectID = "YOUR_DISK_PROJECT_ID"
   
   	ctx := context.Background()
   
   	snapshotsClient, err := compute.NewSnapshotsRESTClient(ctx)
   	if err != nil {
   		return fmt.Errorf("NewSnapshotsRESTClient: %w", err)
   	}
   	defer snapshotsClient.Close()
   
   	if zone == "" && region == "" {
   		return fmt.Errorf("you need to specify `zone` or `region` for this function to work")
   	}
   
   	if zone != "" && region != "" {
   		return fmt.Errorf("you can't set both `zone` and `region` parameters")
   	}
   
   	if diskProjectID == "" {
   		diskProjectID = projectID
   	}
   
   	disk := &computepb.Disk{}
   	locations := []string{}
   	if location != "" {
   		locations = append(locations, location)
   	}
   
   	if zone != "" {
   		disksClient, err := compute.NewDisksRESTClient(ctx)
   		if err != nil {
   			return fmt.Errorf("NewDisksRESTClient: %w", err)
   		}
   		defer disksClient.Close()
   
   		getDiskReq := &computepb.GetDiskRequest{
   			Project: projectID,
   			Zone:    zone,
   			Disk:    diskName,
   		}
   
   		disk, err = disksClient.Get(ctx, getDiskReq)
   		if err != nil {
   			return fmt.Errorf("unable to get disk: %w", err)
   		}
   	} else {
   		regionDisksClient, err := compute.NewRegionDisksRESTClient(ctx)
   		if err != nil {
   			return fmt.Errorf("NewRegionDisksRESTClient: %w", err)
   		}
   		defer regionDisksClient.Close()
   
   		getDiskReq := &computepb.GetRegionDiskRequest{
   			Project: projectID,
   			Region:  region,
   			Disk:    diskName,
   		}
   
   		disk, err = regionDisksClient.Get(ctx, getDiskReq)
   		if err != nil {
   			return fmt.Errorf("unable to get disk: %w", err)
   		}
   	}
   
   	req := &computepb.InsertSnapshotRequest{
   		Project: projectID,
   		SnapshotResource: &computepb.Snapshot{
   			Name:             proto.String(snapshotName),
   			SourceDisk:       proto.String(disk.GetSelfLink()),
   			StorageLocations: locations,
   		},
   	}
   
   	op, err := snapshotsClient.Insert(ctx, req)
   	if err != nil {
   		return fmt.Errorf("unable to create snapshot: %w", err)
   	}
   
   	if err = op.Wait(ctx); err != nil {
   		return fmt.Errorf("unable to wait for the operation: %w", err)
   	}
   
   	fmt.Fprintf(w, "Snapshot created\n")
   
   	return nil
   }
   

6. （可选）删除永久性磁盘。

   如果打算为新磁盘重复使用永久性磁盘的名称，必须删除现有磁盘以释放这些名称。此外，删除磁盘还可以节省永久性磁盘存储费用。

   如果您不打算重复使用相同的磁盘名称，您无需将其删除。

   import (
   	"context"
   	"fmt"
   	"io"
   
   	compute "cloud.google.com/go/compute/apiv1"
   	computepb "cloud.google.com/go/compute/apiv1/computepb"
   )
   
   // deleteDisk deletes a disk from a project.
   func deleteDisk(w io.Writer, projectID, zone, diskName string) error {
   	// projectID := "your_project_id"
   	// zone := "us-west3-b"
   	// diskName := "your_disk_name"
   
   	ctx := context.Background()
   	disksClient, err := compute.NewDisksRESTClient(ctx)
   	if err != nil {
   		return fmt.Errorf("NewDisksRESTClient: %w", err)
   	}
   	defer disksClient.Close()
   
   	req := &computepb.DeleteDiskRequest{
   		Project: projectID,
   		Zone:    zone,
   		Disk:    diskName,
   	}
   
   	op, err := disksClient.Delete(ctx, req)
   	if err != nil {
   		return fmt.Errorf("unable to delete disk: %w", err)
   	}
   
   	if err = op.Wait(ctx); err != nil {
   		return fmt.Errorf("unable to wait for the operation: %w", err)
   	}
   
   	fmt.Fprintf(w, "Disk deleted\n")
   
   	return nil
   }
   

7. 使用创建的快照在目标可用区中创建新的永久性磁盘。首先创建启动磁盘，然后创建数据磁盘。

   import (
   	"context"
   	"fmt"
   	"io"
   
   	compute "cloud.google.com/go/compute/apiv1"
   	computepb "cloud.google.com/go/compute/apiv1/computepb"
   	"google.golang.org/protobuf/proto"
   )
   
   // createDiskFromSnapshot creates a new disk in a project in given zone.
   func createDiskFromSnapshot(
   	w io.Writer,
   	projectID, zone, diskName, diskType, snapshotLink string,
   	diskSizeGb int64,
   ) error {
   	// projectID := "your_project_id"
   	// zone := "us-west3-b" // should match diskType below
   	// diskName := "your_disk_name"
   	// diskType := "zones/us-west3-b/diskTypes/pd-ssd"
   	// snapshotLink := "projects/your_project_id/global/snapshots/snapshot_name"
   	// diskSizeGb := 120
   
   	ctx := context.Background()
   	disksClient, err := compute.NewDisksRESTClient(ctx)
   	if err != nil {
   		return fmt.Errorf("NewDisksRESTClient: %w", err)
   	}
   	defer disksClient.Close()
   
   	req := &computepb.InsertDiskRequest{
   		Project: projectID,
   		Zone:    zone,
   		DiskResource: &computepb.Disk{
   			Name:           proto.String(diskName),
   			Zone:           proto.String(zone),
   			Type:           proto.String(diskType),
   			SourceSnapshot: proto.String(snapshotLink),
   			SizeGb:         proto.Int64(diskSizeGb),
   		},
   	}
   
   	op, err := disksClient.Insert(ctx, req)
   	if err != nil {
   		return fmt.Errorf("unable to create disk: %w", err)
   	}
   
   	if err = op.Wait(ctx); err != nil {
   		return fmt.Errorf("unable to wait for the operation: %w", err)
   	}
   
   	fmt.Fprintf(w, "Disk created\n")
   
   	return nil
   }
   

8. 使用目标可用区中的新磁盘重新创建虚拟机。

   import (
   	"context"
   	"fmt"
   	"io"
   
   	compute "cloud.google.com/go/compute/apiv1"
   	computepb "cloud.google.com/go/compute/apiv1/computepb"
   	"google.golang.org/protobuf/proto"
   )
   
   // createWithExistingDisks create a new VM instance using selected disks.
   // The first disk in diskNames will be used as boot disk.
   func createWithExistingDisks(
   	w io.Writer,
   	projectID, zone, instanceName string,
   	diskNames []string,
   ) error {
   	// projectID := "your_project_id"
   	// zone := "europe-central2-b"
   	// instanceName := "your_instance_name"
   	// diskNames := []string{"boot_disk", "disk1", "disk2"}
   
   	ctx := context.Background()
   	instancesClient, err := compute.NewInstancesRESTClient(ctx)
   	if err != nil {
   		return fmt.Errorf("NewInstancesRESTClient: %w", err)
   	}
   	defer instancesClient.Close()
   
   	disksClient, err := compute.NewDisksRESTClient(ctx)
   	if err != nil {
   		return fmt.Errorf("NewDisksRESTClient: %w", err)
   	}
   	defer disksClient.Close()
   
   	disks := [](*computepb.Disk){}
   
   	for _, diskName := range diskNames {
   		reqDisk := &computepb.GetDiskRequest{
   			Project: projectID,
   			Zone:    zone,
   			Disk:    diskName,
   		}
   
   		disk, err := disksClient.Get(ctx, reqDisk)
   		if err != nil {
   			return fmt.Errorf("unable to get disk: %w", err)
   		}
   
   		disks = append(disks, disk)
   	}
   
   	attachedDisks := [](*computepb.AttachedDisk){}
   
   	for _, disk := range disks {
   		attachedDisk := &computepb.AttachedDisk{
   			Source: proto.String(disk.GetSelfLink()),
   		}
   		attachedDisks = append(attachedDisks, attachedDisk)
   	}
   
   	attachedDisks[0].Boot = proto.Bool(true)
   
   	instanceResource := &computepb.Instance{
   		Name:        proto.String(instanceName),
   		Disks:       attachedDisks,
   		MachineType: proto.String(fmt.Sprintf("zones/%s/machineTypes/n1-standard-1", zone)),
   		NetworkInterfaces: []*computepb.NetworkInterface{
   			{
   				Name: proto.String("global/networks/default"),
   			},
   		},
   	}
   
   	req := &computepb.InsertInstanceRequest{
   		Project:          projectID,
   		Zone:             zone,
   		InstanceResource: instanceResource,
   	}
   
   	op, err := instancesClient.Insert(ctx, req)
   	if err != nil {
   		return fmt.Errorf("unable to create instance: %w", err)
   	}
   
   	if err = op.Wait(ctx); err != nil {
   		return fmt.Errorf("unable to wait for the operation: %w", err)
   	}
   
   	fmt.Fprintf(w, "Instance created\n")
   
   	return nil
   }
   

9. （可选）删除临时磁盘快照。在您确认虚拟机已完成移动后，可删除创建的临时快照以节省存储费用。

   import (
   	"context"
   	"fmt"
   	"io"
   
   	compute "cloud.google.com/go/compute/apiv1"
   	computepb "cloud.google.com/go/compute/apiv1/computepb"
   )
   
   // deleteSnapshot deletes a snapshot of a disk.
   func deleteSnapshot(w io.Writer, projectID, snapshotName string) error {
   	// projectID := "your_project_id"
   	// snapshotName := "your_snapshot_name"
   
   	ctx := context.Background()
   	snapshotsClient, err := compute.NewSnapshotsRESTClient(ctx)
   	if err != nil {
   		return fmt.Errorf("NewSnapshotsRESTClient: %w", err)
   	}
   	defer snapshotsClient.Close()
   
   	req := &computepb.DeleteSnapshotRequest{
   		Project:  projectID,
   		Snapshot: snapshotName,
   	}
   
   	op, err := snapshotsClient.Delete(ctx, req)
   	if err != nil {
   		return fmt.Errorf("unable to delete snapshot: %w", err)
   	}
   
   	if err = op.Wait(ctx); err != nil {
   		return fmt.Errorf("unable to wait for the operation: %w", err)
   	}
   
   	fmt.Fprintf(w, "Snapshot deleted\n")
   
   	return nil
   }
   

Java

1. 获取虚拟机的详细信息，并找到挂接到虚拟机的磁盘。

   
   import com.google.cloud.compute.v1.Instance;
   import com.google.cloud.compute.v1.InstancesClient;
   import java.io.IOException;
   
   public class GetInstance {
   
     public static void main(String[] args) throws IOException {
       // TODO(developer): Replace these variables before running the sample.
   
       // Project ID or project number of the Cloud project you want to use.
       String projectId = "YOUR_PROJECT_ID";
   
       // Name of the zone you want to use. For example: 'us-west3-b'.
       String zone = "europe-central2-b";
   
       // Name of the VM instance you want to query.
       String instanceName = "YOUR_INSTANCE_NAME";
   
       getInstance(projectId, zone, instanceName);
     }
   
     // Prints information about a VM instance in the given zone in the specified project.
     public static void getInstance(String projectId, String zone, String instanceName)
         throws IOException {
   
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests. After completing all of your requests, call
       // the `instancesClient.close()` method on the client to safely
       // clean up any remaining background resources.
       try (InstancesClient instancesClient = InstancesClient.create()) {
   
         Instance instance = instancesClient.get(projectId, zone, instanceName);
   
         System.out.printf("Retrieved the instance %s", instance.toString());
       }
     }
   }

2. 将启动磁盘和数据磁盘的自动删除状态设置为 false，以确保在删除虚拟机时不会自动删除磁盘。

   
   import com.google.cloud.compute.v1.Instance;
   import com.google.cloud.compute.v1.InstancesClient;
   import com.google.cloud.compute.v1.Operation;
   import com.google.cloud.compute.v1.SetDiskAutoDeleteInstanceRequest;
   import java.io.IOException;
   import java.util.concurrent.ExecutionException;
   import java.util.concurrent.TimeUnit;
   import java.util.concurrent.TimeoutException;
   
   public class SetDiskAutodelete {
   
     public static void main(String[] args)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
       // TODO(developer): Replace these variables before running the sample.
   
       // Project ID or project number of the Cloud project you want to use.
       String projectId = "YOUR_PROJECT_ID";
   
       // The zone of the disk that you want to modify.
       String zone = "europe-central2-b";
   
       // Name of the instance the disk is attached to.
       String instanceName = "YOUR_INSTANCE_NAME";
   
       // The name of the disk for which you want to modify the autodelete flag.
       String diskName = "YOUR_DISK_NAME";
   
       // The new value of the autodelete flag.
       boolean autoDelete = true;
   
       setDiskAutodelete(projectId, zone, instanceName, diskName, autoDelete);
     }
   
     // Sets the autodelete flag of a disk to given value.
     public static void setDiskAutodelete(String projectId, String zone, String instanceName,
         String diskName, boolean autoDelete)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
   
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests. After completing all of your requests, call
       // the `instancesClient.close()` method on the client to safely
       // clean up any remaining background resources.
       try (InstancesClient instancesClient = InstancesClient.create()) {
   
         // Retrieve the instance given by the instanceName.
         Instance instance = instancesClient.get(projectId, zone, instanceName);
   
         // Check if the instance contains a disk that matches the given diskName.
         boolean diskNameMatch = instance.getDisksList()
             .stream()
             .anyMatch(disk -> disk.getDeviceName().equals(diskName));
   
         if (!diskNameMatch) {
           throw new Error(
               String.format("Instance %s doesn't have a disk named %s attached", instanceName,
                   diskName));
         }
   
         // Create the request object.
         SetDiskAutoDeleteInstanceRequest request = SetDiskAutoDeleteInstanceRequest.newBuilder()
             .setProject(projectId)
             .setZone(zone)
             .setInstance(instanceName)
             .setDeviceName(diskName)
             // Update the autodelete property.
             .setAutoDelete(autoDelete)
             .build();
   
         // Wait for the update instance operation to complete.
         Operation response = instancesClient.setDiskAutoDeleteAsync(request)
             .get(3, TimeUnit.MINUTES);
   
         if (response.hasError()) {
           System.out.println("Failed to update Disk autodelete field!" + response);
           return;
         }
         System.out.println(
             "Disk autodelete field updated. Operation Status: " + response.getStatus());
       }
     }
   }

3. 使用永久性磁盘快照创建数据的备份。

   为保险起见，请在永久性磁盘仍挂接到虚拟机时使用永久性磁盘快照创建数据的备份。在截取快照之前，请务必遵循快照最佳做法，确保快照与永久性磁盘的状态一致。

   注意：如果您运行的是 Windows 虚拟机，必须先终止该虚拟机，然后才能创建快照。按照步骤为 Windows 虚拟机创建快照。

   清空磁盘缓冲区后，按如下所示创建快照：

   
   import com.google.cloud.compute.v1.Disk;
   import com.google.cloud.compute.v1.DisksClient;
   import com.google.cloud.compute.v1.Operation;
   import com.google.cloud.compute.v1.RegionDisksClient;
   import com.google.cloud.compute.v1.Snapshot;
   import com.google.cloud.compute.v1.SnapshotsClient;
   import java.io.IOException;
   import java.util.concurrent.ExecutionException;
   import java.util.concurrent.TimeUnit;
   import java.util.concurrent.TimeoutException;
   
   public class CreateSnapshot {
   
     public static void main(String[] args)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
       // TODO(developer): Replace these variables before running the sample.
       // You need to pass `zone` or `region` parameter relevant to the disk you want to
       // snapshot, but not both. Pass `zone` parameter for zonal disks and `region` for
       // regional disks.
   
       // Project ID or project number of the Cloud project you want to use.
       String projectId = "YOUR_PROJECT_ID";
   
       // Name of the disk you want to create.
       String diskName = "YOUR_DISK_NAME";
   
       // Name of the snapshot that you want to create.
       String snapshotName = "YOUR_SNAPSHOT_NAME";
   
       // The zone of the source disk from which you create the snapshot (for zonal disks).
       String zone = "europe-central2-b";
   
       // The region of the source disk from which you create the snapshot (for regional disks).
       String region = "your-disk-region";
   
       // The Cloud Storage multi-region or the Cloud Storage region where you
       // want to store your snapshot.
       // You can specify only one storage location. Available locations:
       // https://cloud.google.com/storage/docs/locations#available-locations
       String location = "europe-central2";
   
       // Project ID or project number of the Cloud project that
       // hosts the disk you want to snapshot. If not provided, the value will be defaulted
       // to 'projectId' value.
       String diskProjectId = "YOUR_DISK_PROJECT_ID";
   
       createSnapshot(projectId, diskName, snapshotName, zone, region, location, diskProjectId);
     }
   
     // Creates a snapshot of a disk.
     public static void createSnapshot(String projectId, String diskName, String snapshotName,
         String zone, String region, String location, String diskProjectId)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
   
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests. After completing all of your requests, call
       // the `snapshotsClient.close()` method on the client to safely
       // clean up any remaining background resources.
       try (SnapshotsClient snapshotsClient = SnapshotsClient.create()) {
   
         if (zone.isEmpty() && region.isEmpty()) {
           throw new Error("You need to specify 'zone' or 'region' for this function to work");
         }
   
         if (!zone.isEmpty() && !region.isEmpty()) {
           throw new Error("You can't set both 'zone' and 'region' parameters");
         }
   
         // If Disk's project id is not specified, then the projectId parameter will be used.
         if (diskProjectId.isEmpty()) {
           diskProjectId = projectId;
         }
   
         // If zone is not empty, use the DisksClient to create a disk.
         // Else, use the RegionDisksClient.
         Disk disk;
         if (!zone.isEmpty()) {
           DisksClient disksClient = DisksClient.create();
           disk = disksClient.get(projectId, zone, diskName);
         } else {
           RegionDisksClient regionDisksClient = RegionDisksClient.create();
           disk = regionDisksClient.get(diskProjectId, region, diskName);
         }
   
         // Set the snapshot properties.
         Snapshot snapshotResource;
         if (!location.isEmpty()) {
           snapshotResource = Snapshot.newBuilder()
               .setName(snapshotName)
               .setSourceDisk(disk.getSelfLink())
               .addStorageLocations(location)
               .build();
         } else {
           snapshotResource = Snapshot.newBuilder()
               .setName(snapshotName)
               .setSourceDisk(disk.getSelfLink())
               .build();
         }
   
         // Wait for the operation to complete.
         Operation operation = snapshotsClient.insertAsync(projectId, snapshotResource)
             .get(3, TimeUnit.MINUTES);
   
         if (operation.hasError()) {
           System.out.println("Snapshot creation failed!" + operation);
           return;
         }
   
         // Retrieve the created snapshot.
         Snapshot snapshot = snapshotsClient.get(projectId, snapshotName);
         System.out.printf("Snapshot created: %s", snapshot.getName());
   
       }
     }
   }

4. 从源可用区中删除虚拟机。

   
   import com.google.api.gax.longrunning.OperationFuture;
   import com.google.cloud.compute.v1.DeleteInstanceRequest;
   import com.google.cloud.compute.v1.InstancesClient;
   import com.google.cloud.compute.v1.Operation;
   import java.io.IOException;
   import java.util.concurrent.ExecutionException;
   import java.util.concurrent.TimeUnit;
   import java.util.concurrent.TimeoutException;
   
   public class DeleteInstance {
   
     public static void main(String[] args)
         throws IOException, InterruptedException, ExecutionException, TimeoutException {
       // TODO(developer): Replace these variables before running the sample.
       String project = "your-project-id";
       String zone = "zone-name";
       String instanceName = "instance-name";
       deleteInstance(project, zone, instanceName);
     }
   
     // Delete the instance specified by `instanceName`
     // if it's present in the given project and zone.
     public static void deleteInstance(String project, String zone, String instanceName)
         throws IOException, InterruptedException, ExecutionException, TimeoutException {
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests. After completing all of your requests, call
       // the `instancesClient.close()` method on the client to safely
       // clean up any remaining background resources.
       try (InstancesClient instancesClient = InstancesClient.create()) {
   
         System.out.printf("Deleting instance: %s ", instanceName);
   
         // Describe which instance is to be deleted.
         DeleteInstanceRequest deleteInstanceRequest = DeleteInstanceRequest.newBuilder()
             .setProject(project)
             .setZone(zone)
             .setInstance(instanceName).build();
   
         OperationFuture<Operation, Operation> operation = instancesClient.deleteAsync(
             deleteInstanceRequest);
         // Wait for the operation to complete.
         Operation response = operation.get(3, TimeUnit.MINUTES);
   
         if (response.hasError()) {
           System.out.println("Instance deletion failed ! ! " + response);
           return;
         }
         System.out.println("Operation Status: " + response.getStatus());
       }
     }
   }

5. 接着，创建启动磁盘和数据磁盘的另一个快照。

   
   import com.google.cloud.compute.v1.Disk;
   import com.google.cloud.compute.v1.DisksClient;
   import com.google.cloud.compute.v1.Operation;
   import com.google.cloud.compute.v1.RegionDisksClient;
   import com.google.cloud.compute.v1.Snapshot;
   import com.google.cloud.compute.v1.SnapshotsClient;
   import java.io.IOException;
   import java.util.concurrent.ExecutionException;
   import java.util.concurrent.TimeUnit;
   import java.util.concurrent.TimeoutException;
   
   public class CreateSnapshot {
   
     public static void main(String[] args)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
       // TODO(developer): Replace these variables before running the sample.
       // You need to pass `zone` or `region` parameter relevant to the disk you want to
       // snapshot, but not both. Pass `zone` parameter for zonal disks and `region` for
       // regional disks.
   
       // Project ID or project number of the Cloud project you want to use.
       String projectId = "YOUR_PROJECT_ID";
   
       // Name of the disk you want to create.
       String diskName = "YOUR_DISK_NAME";
   
       // Name of the snapshot that you want to create.
       String snapshotName = "YOUR_SNAPSHOT_NAME";
   
       // The zone of the source disk from which you create the snapshot (for zonal disks).
       String zone = "europe-central2-b";
   
       // The region of the source disk from which you create the snapshot (for regional disks).
       String region = "your-disk-region";
   
       // The Cloud Storage multi-region or the Cloud Storage region where you
       // want to store your snapshot.
       // You can specify only one storage location. Available locations:
       // https://cloud.google.com/storage/docs/locations#available-locations
       String location = "europe-central2";
   
       // Project ID or project number of the Cloud project that
       // hosts the disk you want to snapshot. If not provided, the value will be defaulted
       // to 'projectId' value.
       String diskProjectId = "YOUR_DISK_PROJECT_ID";
   
       createSnapshot(projectId, diskName, snapshotName, zone, region, location, diskProjectId);
     }
   
     // Creates a snapshot of a disk.
     public static void createSnapshot(String projectId, String diskName, String snapshotName,
         String zone, String region, String location, String diskProjectId)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
   
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests. After completing all of your requests, call
       // the `snapshotsClient.close()` method on the client to safely
       // clean up any remaining background resources.
       try (SnapshotsClient snapshotsClient = SnapshotsClient.create()) {
   
         if (zone.isEmpty() && region.isEmpty()) {
           throw new Error("You need to specify 'zone' or 'region' for this function to work");
         }
   
         if (!zone.isEmpty() && !region.isEmpty()) {
           throw new Error("You can't set both 'zone' and 'region' parameters");
         }
   
         // If Disk's project id is not specified, then the projectId parameter will be used.
         if (diskProjectId.isEmpty()) {
           diskProjectId = projectId;
         }
   
         // If zone is not empty, use the DisksClient to create a disk.
         // Else, use the RegionDisksClient.
         Disk disk;
         if (!zone.isEmpty()) {
           DisksClient disksClient = DisksClient.create();
           disk = disksClient.get(projectId, zone, diskName);
         } else {
           RegionDisksClient regionDisksClient = RegionDisksClient.create();
           disk = regionDisksClient.get(diskProjectId, region, diskName);
         }
   
         // Set the snapshot properties.
         Snapshot snapshotResource;
         if (!location.isEmpty()) {
           snapshotResource = Snapshot.newBuilder()
               .setName(snapshotName)
               .setSourceDisk(disk.getSelfLink())
               .addStorageLocations(location)
               .build();
         } else {
           snapshotResource = Snapshot.newBuilder()
               .setName(snapshotName)
               .setSourceDisk(disk.getSelfLink())
               .build();
         }
   
         // Wait for the operation to complete.
         Operation operation = snapshotsClient.insertAsync(projectId, snapshotResource)
             .get(3, TimeUnit.MINUTES);
   
         if (operation.hasError()) {
           System.out.println("Snapshot creation failed!" + operation);
           return;
         }
   
         // Retrieve the created snapshot.
         Snapshot snapshot = snapshotsClient.get(projectId, snapshotName);
         System.out.printf("Snapshot created: %s", snapshot.getName());
   
       }
     }
   }

6. （可选）删除永久性磁盘。

   如果打算为新磁盘重复使用永久性磁盘的名称，必须删除现有磁盘以释放这些名称。此外，删除磁盘还可以节省永久性磁盘存储费用。

   如果您不打算重复使用相同的磁盘名称，您无需将其删除。

   
   import com.google.cloud.compute.v1.DeleteDiskRequest;
   import com.google.cloud.compute.v1.DisksClient;
   import com.google.cloud.compute.v1.Operation;
   import java.io.IOException;
   import java.util.concurrent.ExecutionException;
   import java.util.concurrent.TimeUnit;
   import java.util.concurrent.TimeoutException;
   
   public class DeleteDisk {
   
     public static void main(String[] args)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
       // TODO(developer): Replace these variables before running the sample.
   
       // Project ID or project number of the Cloud project you want to use.
       String projectId = "YOUR_PROJECT_ID";
   
       // The zone from where you want to delete the disk.
       String zone = "europe-central2-b";
   
       // Name of the disk you want to delete.
       String diskName = "YOUR_DISK_NAME";
   
       deleteDisk(projectId, zone, diskName);
     }
   
     // Deletes a disk from a project.
     public static void deleteDisk(String projectId, String zone, String diskName)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
   
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests. After completing all of your requests, call
       // the `disksClient.close()` method on the client to safely
       // clean up any remaining background resources.
       try (DisksClient disksClient = DisksClient.create()) {
   
         // Create the request object.
         DeleteDiskRequest deleteDiskRequest = DeleteDiskRequest.newBuilder()
             .setProject(projectId)
             .setZone(zone)
             .setDisk(diskName)
             .build();
   
         // Wait for the delete disk operation to complete.
         Operation response = disksClient.deleteAsync(deleteDiskRequest)
             .get(3, TimeUnit.MINUTES);
   
         if (response.hasError()) {
           System.out.println("Disk deletion failed!" + response);
           return;
         }
         System.out.println("Operation Status: " + response.getStatus());
       }
     }
   }

7. 使用创建的快照在目标可用区中创建新的永久性磁盘。首先创建启动磁盘，然后创建数据磁盘。

   
   import com.google.cloud.compute.v1.Disk;
   import com.google.cloud.compute.v1.DisksClient;
   import com.google.cloud.compute.v1.InsertDiskRequest;
   import com.google.cloud.compute.v1.Operation;
   import java.io.IOException;
   import java.util.concurrent.ExecutionException;
   import java.util.concurrent.TimeUnit;
   import java.util.concurrent.TimeoutException;
   
   public class CreateDiskFromSnapshot {
   
     public static void main(String[] args)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
       // TODO(developer): Replace these variables before running the sample.
   
       // Project ID or project number of the Cloud project you want to use.
       String projectId = "YOUR_PROJECT_ID";
   
       // Name of the zone in which you want to create the disk.
       String zone = "europe-central2-b";
   
       // Name of the disk you want to create.
       String diskName = "YOUR_DISK_NAME";
   
       // The type of disk you want to create. This value uses the following format:
       // "zones/{zone}/diskTypes/(pd-standard|pd-ssd|pd-balanced|pd-extreme)".
       // For example: "zones/us-west3-b/diskTypes/pd-ssd"
       String diskType = String.format("zones/%s/diskTypes/pd-ssd", zone);
   
       // Size of the new disk in gigabytes.
       long diskSizeGb = 10;
   
       // The full path and name of the snapshot that you want to use as the source for the new disk.
       // This value uses the following format:
       // "projects/{projectName}/global/snapshots/{snapshotName}"
       String snapshotLink = String.format("projects/%s/global/snapshots/%s", projectId,
           "SNAPSHOT_NAME");
   
       createDiskFromSnapshot(projectId, zone, diskName, diskType, diskSizeGb, snapshotLink);
     }
   
     // Creates a new disk in a project in given zone, using a snapshot.
     public static void createDiskFromSnapshot(String projectId, String zone, String diskName,
         String diskType, long diskSizeGb, String snapshotLink)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
   
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests. After completing all of your requests, call
       // the `disksClient.close()` method on the client to safely
       // clean up any remaining background resources.
       try (DisksClient disksClient = DisksClient.create()) {
   
         // Set the disk properties and the source snapshot.
         Disk disk = Disk.newBuilder()
             .setName(diskName)
             .setZone(zone)
             .setSizeGb(diskSizeGb)
             .setType(diskType)
             .setSourceSnapshot(snapshotLink)
             .build();
   
         // Create the insert disk request.
         InsertDiskRequest insertDiskRequest = InsertDiskRequest.newBuilder()
             .setProject(projectId)
             .setZone(zone)
             .setDiskResource(disk)
             .build();
   
         // Wait for the create disk operation to complete.
         Operation response = disksClient.insertAsync(insertDiskRequest)
             .get(3, TimeUnit.MINUTES);
   
         if (response.hasError()) {
           System.out.println("Disk creation failed!" + response);
           return;
         }
         System.out.println("Disk created. Operation Status: " + response.getStatus());
       }
     }
   }

8. 使用目标可用区中的新磁盘重新创建虚拟机。

   
   import com.google.cloud.compute.v1.AttachedDisk;
   import com.google.cloud.compute.v1.Disk;
   import com.google.cloud.compute.v1.DisksClient;
   import com.google.cloud.compute.v1.InsertInstanceRequest;
   import com.google.cloud.compute.v1.Instance;
   import com.google.cloud.compute.v1.InstancesClient;
   import com.google.cloud.compute.v1.NetworkInterface;
   import com.google.cloud.compute.v1.Operation;
   import java.io.IOException;
   import java.util.ArrayList;
   import java.util.List;
   import java.util.concurrent.ExecutionException;
   import java.util.concurrent.TimeUnit;
   import java.util.concurrent.TimeoutException;
   
   public class CreateInstanceWithExistingDisks {
   
     public static void main(String[] args)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
       // TODO(developer): Replace these variables before running the sample.
   
       // Project ID or project number of the Cloud project you want to use.
       String projectId = "YOUR_PROJECT_ID";
   
       // Name of the zone to create the instance in. For example: "us-west3-b"
       String zone = "europe-central2-b";
   
       // Name of the new virtual machine (VM) instance.
       String instanceName = "YOUR_INSTANCE_NAME";
   
       // Array of disk names to be attached to the new virtual machine.
       // First disk in this list will be used as the boot disk.
       List<String> diskNames = List.of("your-boot-disk", "another-disk1", "another-disk2");
   
       createInstanceWithExistingDisks(projectId, zone, instanceName, diskNames);
     }
   
     // Create a new VM instance using the selected disks.
     // The first disk in diskNames will be used as the boot disk.
     public static void createInstanceWithExistingDisks(String projectId, String zone,
         String instanceName, List<String> diskNames)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
   
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests. After completing all of your requests, call
       // the `instancesClient.close()` method on the client to safely
       // clean up any remaining background resources.
       try (InstancesClient instancesClient = InstancesClient.create();
           DisksClient disksClient = DisksClient.create()) {
   
         if (diskNames.size() == 0) {
           throw new Error("At least one disk should be provided");
         }
   
         // Create the list of attached disks to be used in instance creation.
         List<AttachedDisk> attachedDisks = new ArrayList<>();
         for (int i = 0; i < diskNames.size(); i++) {
           String diskName = diskNames.get(i);
           Disk disk = disksClient.get(projectId, zone, diskName);
           AttachedDisk attDisk = null;
   
           if (i == 0) {
             // Make the first disk in the list as the boot disk.
             attDisk = AttachedDisk.newBuilder()
                 .setSource(disk.getSelfLink())
                 .setBoot(true)
                 .build();
           } else {
             attDisk = AttachedDisk.newBuilder()
                 .setSource(disk.getSelfLink())
                 .build();
           }
           attachedDisks.add(attDisk);
         }
   
         // Create the instance.
         Instance instance = Instance.newBuilder()
             .setName(instanceName)
             // Add the attached disks to the instance.
             .addAllDisks(attachedDisks)
             .setMachineType(String.format("zones/%s/machineTypes/n1-standard-1", zone))
             .addNetworkInterfaces(
                 NetworkInterface.newBuilder().setName("global/networks/default").build())
             .build();
   
         // Create the insert instance request.
         InsertInstanceRequest insertInstanceRequest = InsertInstanceRequest.newBuilder()
             .setProject(projectId)
             .setZone(zone)
             .setInstanceResource(instance)
             .build();
   
         // Wait for the create operation to complete.
         Operation response = instancesClient.insertAsync(insertInstanceRequest)
             .get(3, TimeUnit.MINUTES);
   
         if (response.hasError()) {
           System.out.println("Instance creation failed!" + response);
           return;
         }
         System.out.println("Operation Status: " + response.getStatus());
   
       }
     }
   }

9. （可选）删除临时磁盘快照。在您确认虚拟机已完成移动后，可删除创建的临时快照以节省存储费用。

   
   import com.google.cloud.compute.v1.Operation;
   import com.google.cloud.compute.v1.SnapshotsClient;
   import java.io.IOException;
   import java.util.concurrent.ExecutionException;
   import java.util.concurrent.TimeUnit;
   import java.util.concurrent.TimeoutException;
   
   public class DeleteSnapshot {
   
     public static void main(String[] args)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
       // TODO(developer): Replace these variables before running the sample.
   
       // Project ID or project number of the Cloud project you want to use.
       String projectId = "YOUR_PROJECT_ID";
   
       // Name of the snapshot to be deleted.
       String snapshotName = "YOUR_SNAPSHOT_NAME";
   
       deleteSnapshot(projectId, snapshotName);
     }
   
     // Delete a snapshot of a disk.
     public static void deleteSnapshot(String projectId, String snapshotName)
         throws IOException, ExecutionException, InterruptedException, TimeoutException {
   
       // Initialize client that will be used to send requests. This client only needs to be created
       // once, and can be reused for multiple requests. After completing all of your requests, call
       // the `snapshotsClient.close()` method on the client to safely
       // clean up any remaining background resources.
       try (SnapshotsClient snapshotsClient = SnapshotsClient.create()) {
   
         Operation operation = snapshotsClient.deleteAsync(projectId, snapshotName)
             .get(3, TimeUnit.MINUTES);
   
         if (operation.hasError()) {
           System.out.println("Snapshot deletion failed!" + operation);
           return;
         }
   
         System.out.println("Snapshot deleted!");
       }
     }
   }

Node.js

1. 获取虚拟机的详细信息，并找到挂接到虚拟机的磁盘。

   /**
    * TODO(developer): Uncomment and replace these variables before running the sample.
    */
   // const projectId = 'YOUR_PROJECT_ID';
   // const zone = 'europe-central2-b'
   // const instanceName = 'YOUR_INSTANCE_NAME'
   
   const compute = require('@google-cloud/compute');
   
   async function getInstance() {
     const instancesClient = new compute.InstancesClient();
   
     const [instance] = await instancesClient.get({
       project: projectId,
       zone,
       instance: instanceName,
     });
   
     console.log(
       `Instance ${instanceName} data:\n${JSON.stringify(instance, null, 4)}`
     );
   }
   getInstance();

2. 将启动磁盘和数据磁盘的自动删除状态设置为 false，以确保在删除虚拟机时不会自动删除磁盘。

   /**
    * TODO(developer): Uncomment and replace these variables before running the sample.
    */
   // const projectId = 'YOUR_PROJECT_ID';
   // const zone = 'europe-central2-b';
   // const instanceName = 'YOUR_INSTANCE_NAME';
   // const diskName = 'YOUR_DISK_NAME';
   // const autoDelete = true;
   
   const compute = require('@google-cloud/compute');
   
   async function setDiskAutodelete() {
     const instancesClient = new compute.InstancesClient();
   
     const [instance] = await instancesClient.get({
       project: projectId,
       zone,
       instance: instanceName,
     });
   
     if (!instance.disks.some(disk => disk.deviceName === diskName)) {
       throw new Error(
         `Instance ${instanceName} doesn't have a disk named ${diskName} attached.`
       );
     }
   
     const [response] = await instancesClient.setDiskAutoDelete({
       project: projectId,
       zone,
       instance: instanceName,
       deviceName: diskName,
       autoDelete,
     });
     let operation = response.latestResponse;
     const operationsClient = new compute.ZoneOperationsClient();
   
     // Wait for the update instance operation to complete.
     while (operation.status !== 'DONE') {
       [operation] = await operationsClient.wait({
         operation: operation.name,
         project: projectId,
         zone: operation.zone.split('/').pop(),
       });
     }
   
     console.log('Disk autoDelete field updated.');
   }
   
   setDiskAutodelete();

3. 使用永久性磁盘快照创建数据的备份。

   为保险起见，请在永久性磁盘仍挂接到虚拟机时使用永久性磁盘快照创建数据的备份。在截取快照之前，请务必遵循快照最佳做法，确保快照与永久性磁盘的状态一致。

   注意：如果您运行的是 Windows 虚拟机，必须先终止该虚拟机，然后才能创建快照。按照步骤为 Windows 虚拟机创建快照。

   清空磁盘缓冲区后，按如下所示创建快照：

   /**
    * TODO(developer): Uncomment and replace these variables before running the sample.
    */
   // const projectId = 'YOUR_PROJECT_ID';
   // const diskName = 'YOUR_DISK_NAME';
   // const snapshotName = 'YOUR_SNAPSHOT_NAME';
   // const zone = 'europe-central2-b';
   // const region = '';
   // const location = 'europe-central2';
   // let diskProjectId = 'YOUR_DISK_PROJECT_ID';
   
   const compute = require('@google-cloud/compute');
   
   async function createSnapshot() {
     const snapshotsClient = new compute.SnapshotsClient();
   
     let disk;
   
     if (!zone && !region) {
       throw new Error(
         'You need to specify `zone` or `region` for this function to work.'
       );
     }
   
     if (zone && region) {
       throw new Error("You can't set both `zone` and `region` parameters");
     }
   
     if (!diskProjectId) {
       diskProjectId = projectId;
     }
   
     if (zone) {
       const disksClient = new compute.DisksClient();
       [disk] = await disksClient.get({
         project: diskProjectId,
         zone,
         disk: diskName,
       });
     } else {
       const regionDisksClient = new compute.RegionDisksClient();
       [disk] = await regionDisksClient.get({
         project: diskProjectId,
         region,
         disk: diskName,
       });
     }
   
     const snapshotResource = {
       name: snapshotName,
       sourceDisk: disk.selfLink,
     };
   
     if (location) {
       snapshotResource.storageLocations = [location];
     }
   
     const [response] = await snapshotsClient.insert({
       project: projectId,
       snapshotResource,
     });
     let operation = response.latestResponse;
     const operationsClient = new compute.GlobalOperationsClient();
   
     // Wait for the create snapshot operation to complete.
     while (operation.status !== 'DONE') {
       [operation] = await operationsClient.wait({
         operation: operation.name,
         project: projectId,
       });
     }
   
     console.log('Snapshot created.');
   }
   
   createSnapshot();

4. 从源可用区中删除虚拟机。

   /**
    * TODO(developer): Uncomment these variables before running the sample.
    */
   // const projectId = 'YOUR_PROJECT_ID';
   // const zone = 'europe-central2-b'
   // const instanceName = 'YOUR_INSTANCE_NAME';
   
   const compute = require('@google-cloud/compute');
   
   // Delete the instance specified by `instanceName` if it's present in the given project and zone.
   async function deleteInstance() {
     const instancesClient = new compute.InstancesClient();
   
     console.log(`Deleting ${instanceName} from ${zone}...`);
   
     const [response] = await instancesClient.delete({
       project: projectId,
       zone,
       instance: instanceName,
     });
     let operation = response.latestResponse;
     const operationsClient = new compute.ZoneOperationsClient();
   
     // Wait for the delete operation to complete.
     while (operation.status !== 'DONE') {
       [operation] = await operationsClient.wait({
         operation: operation.name,
         project: projectId,
         zone: operation.zone.split('/').pop(),
       });
     }
   
     console.log('Instance deleted.');
   }
   
   deleteInstance();

5. 接着，创建启动磁盘和数据磁盘的另一个快照。

   /**
    * TODO(developer): Uncomment and replace these variables before running the sample.
    */
   // const projectId = 'YOUR_PROJECT_ID';
   // const diskName = 'YOUR_DISK_NAME';
   // const snapshotName = 'YOUR_SNAPSHOT_NAME';
   // const zone = 'europe-central2-b';
   // const region = '';
   // const location = 'europe-central2';
   // let diskProjectId = 'YOUR_DISK_PROJECT_ID';
   
   const compute = require('@google-cloud/compute');
   
   async function createSnapshot() {
     const snapshotsClient = new compute.SnapshotsClient();
   
     let disk;
   
     if (!zone && !region) {
       throw new Error(
         'You need to specify `zone` or `region` for this function to work.'
       );
     }
   
     if (zone && region) {
       throw new Error("You can't set both `zone` and `region` parameters");
     }
   
     if (!diskProjectId) {
       diskProjectId = projectId;
     }
   
     if (zone) {
       const disksClient = new compute.DisksClient();
       [disk] = await disksClient.get({
         project: diskProjectId,
         zone,
         disk: diskName,
       });
     } else {
       const regionDisksClient = new compute.RegionDisksClient();
       [disk] = await regionDisksClient.get({
         project: diskProjectId,
         region,
         disk: diskName,
       });
     }
   
     const snapshotResource = {
       name: snapshotName,
       sourceDisk: disk.selfLink,
     };
   
     if (location) {
       snapshotResource.storageLocations = [location];
     }
   
     const [response] = await snapshotsClient.insert({
       project: projectId,
       snapshotResource,
     });
     let operation = response.latestResponse;
     const operationsClient = new compute.GlobalOperationsClient();
   
     // Wait for the create snapshot operation to complete.
     while (operation.status !== 'DONE') {
       [operation] = await operationsClient.wait({
         operation: operation.name,
         project: projectId,
       });
     }
   
     console.log('Snapshot created.');
   }
   
   createSnapshot();

6. （可选）删除永久性磁盘。

   如果打算为新磁盘重复使用永久性磁盘的名称，必须删除现有磁盘以释放这些名称。此外，删除磁盘还可以节省永久性磁盘存储费用。

   如果您不打算重复使用相同的磁盘名称，您无需将其删除。

   /**
    * TODO(developer): Uncomment and replace these variables before running the sample.
    */
   // const projectId = 'YOUR_PROJECT_ID';
   // const zone = 'europe-central2-b';
   // const diskName = 'YOUR_DISK_NAME';
   
   const compute = require('@google-cloud/compute');
   
   async function deleteDisk() {
     const disksClient = new compute.DisksClient();
   
     const [response] = await disksClient.delete({
       project: projectId,
       zone,
       disk: diskName,
     });
     let operation = response.latestResponse;
     const operationsClient = new compute.ZoneOperationsClient();
   
     // Wait for the create disk operation to complete.
     while (operation.status !== 'DONE') {
       [operation] = await operationsClient.wait({
         operation: operation.name,
         project: projectId,
         zone: operation.zone.split('/').pop(),
       });
     }
   
     console.log('Disk deleted.');
   }
   
   deleteDisk();

7. 使用创建的快照在目标可用区中创建新的永久性磁盘。首先创建启动磁盘，然后创建数据磁盘。

   /**
    * TODO(developer): Uncomment and replace these variables before running the sample.
    */
   // const projectId = 'YOUR_PROJECT_ID';
   // const zone = 'europe-central2-b';
   // const diskName = 'YOUR_DISK_NAME';
   // const diskType = 'zones/us-west3-b/diskTypes/pd-ssd';
   // const diskSizeGb = 10;
   // const snapshotLink = 'projects/project_name/global/snapshots/snapshot_name';
   
   const compute = require('@google-cloud/compute');
   
   async function createDiskFromSnapshot() {
     const disksClient = new compute.DisksClient();
   
     const [response] = await disksClient.insert({
       project: projectId,
       zone,
       diskResource: {
         sizeGb: diskSizeGb,
         name: diskName,
         zone,
         type: diskType,
         sourceSnapshot: snapshotLink,
       },
     });
     let operation = response.latestResponse;
     const operationsClient = new compute.ZoneOperationsClient();
   
     // Wait for the create disk operation to complete.
     while (operation.status !== 'DONE') {
       [operation] = await operationsClient.wait({
         operation: operation.name,
         project: projectId,
         zone: operation.zone.split('/').pop(),
       });
     }
   
     console.log('Disk created.');
   }
   
   createDiskFromSnapshot();

8. 使用目标可用区中的新磁盘重新创建虚拟机。

   /**
    * TODO(developer): Uncomment and replace these variables before running the sample.
    */
   // const projectId = 'YOUR_PROJECT_ID';
   // const zone = 'europe-central2-b';
   // const instanceName = 'YOUR_INSTANCE_NAME';
   // const diskNames = ['boot_disk', 'disk1', 'disk2'];
   
   const compute = require('@google-cloud/compute');
   
   async function createWithExistingDisks() {
     const instancesClient = new compute.InstancesClient();
     const disksClient = new compute.DisksClient();
   
     if (diskNames.length < 1) {
       throw new Error('At least one disk should be provided');
     }
   
     const disks = [];
     for (const diskName of diskNames) {
       const [disk] = await disksClient.get({
         project: projectId,
         zone,
         disk: diskName,
       });
       disks.push(disk);
     }
   
     const attachedDisks = [];
   
     for (const disk of disks) {
       attachedDisks.push({
         source: disk.selfLink,
       });
     }
   
     attachedDisks[0].boot = true;
   
     const [response] = await instancesClient.insert({
       project: projectId,
       zone,
       instanceResource: {
         name: instanceName,
         disks: attachedDisks,
         machineType: `zones/${zone}/machineTypes/n1-standard-1`,
         networkInterfaces: [
           {
             name: 'global/networks/default',
           },
         ],
       },
     });
     let operation = response.latestResponse;
     const operationsClient = new compute.ZoneOperationsClient();
   
     // Wait for the create operation to complete.
     while (operation.status !== 'DONE') {
       [operation] = await operationsClient.wait({
         operation: operation.name,
         project: projectId,
         zone: operation.zone.split('/').pop(),
       });
     }
   
     console.log('Instance created.');
   }
   
   createWithExistingDisks();

9. （可选）删除临时磁盘快照。在您确认虚拟机已完成移动后，可删除创建的临时快照以节省存储费用。

   /**
    * TODO(developer): Uncomment and replace these variables before running the sample.
    */
   // const projectId = 'YOUR_PROJECT_ID';
   // const snapshotName = 'YOUR_SNAPSHOT_NAME';
   
   const compute = require('@google-cloud/compute');
   
   async function deleteSnapshot() {
     const snapshotsClient = new compute.SnapshotsClient();
   
     const [response] = await snapshotsClient.delete({
       project: projectId,
       snapshot: snapshotName,
     });
     let operation = response.latestResponse;
     const operationsClient = new compute.GlobalOperationsClient();
   
     // Wait for the create disk operation to complete.
     while (operation.status !== 'DONE') {
       [operation] = await operationsClient.wait({
         operation: operation.name,
         project: projectId,
       });
     }
   
     console.log('Snapshot deleted.');
   }
   
   deleteSnapshot();

Python

1. 获取虚拟机的详细信息，并找到挂接到虚拟机的磁盘。

   from google.cloud import compute_v1
   
   
   def get_instance(project_id: str, zone: str, instance_name: str) -> compute_v1.Instance:
       """
       Get information about a VM instance in the given zone in the specified project.
   
       Args:
           project_id: project ID or project number of the Cloud project you want to use.
           zone: name of the zone you want to use. For example: “us-west3-b”
           instance_name: name of the VM instance you want to query.
       Returns:
           An Instance object.
       """
       instance_client = compute_v1.InstancesClient()
       instance = instance_client.get(
           project=project_id, zone=zone, instance=instance_name
       )
   
       return instance
   
   

2. 将启动磁盘和数据磁盘的自动删除状态设置为 false，以确保在删除虚拟机时不会自动删除磁盘。

   from __future__ import annotations
   
   import sys
   from typing import Any
   
   from google.api_core.extended_operation import ExtendedOperation
   from google.cloud import compute_v1
   
   
   def wait_for_extended_operation(
       operation: ExtendedOperation, verbose_name: str = "operation", timeout: int = 300
   ) -> Any:
       """
       Waits for the extended (long-running) operation to complete.
   
       If the operation is successful, it will return its result.
       If the operation ends with an error, an exception will be raised.
       If there were any warnings during the execution of the operation
       they will be printed to sys.stderr.
   
       Args:
           operation: a long-running operation you want to wait on.
           verbose_name: (optional) a more verbose name of the operation,
               used only during error and warning reporting.
           timeout: how long (in seconds) to wait for operation to finish.
               If None, wait indefinitely.
   
       Returns:
           Whatever the operation.result() returns.
   
       Raises:
           This method will raise the exception received from `operation.exception()`
           or RuntimeError if there is no exception set, but there is an `error_code`
           set for the `operation`.
   
           In case of an operation taking longer than `timeout` seconds to complete,
           a `concurrent.futures.TimeoutError` will be raised.
       """
       result = operation.result(timeout=timeout)
   
       if operation.error_code:
           print(
               f"Error during {verbose_name}: [Code: {operation.error_code}]: {operation.error_message}",
               file=sys.stderr,
               flush=True,
           )
           print(f"Operation ID: {operation.name}", file=sys.stderr, flush=True)
           raise operation.exception() or RuntimeError(operation.error_message)
   
       if operation.warnings:
           print(f"Warnings during {verbose_name}:\n", file=sys.stderr, flush=True)
           for warning in operation.warnings:
               print(f" - {warning.code}: {warning.message}", file=sys.stderr, flush=True)
   
       return result
   
   
   def set_disk_autodelete(
       project_id: str, zone: str, instance_name: str, disk_name: str, autodelete: bool
   ) -> None:
       """
       Set the autodelete flag of a disk to given value.
   
       Args:
           project_id: project ID or project number of the Cloud project you want to use.
           zone: name of the zone in which is the disk you want to modify.
           instance_name: name of the instance the disk is attached to.
           disk_name: the name of the disk which flag you want to modify.
           autodelete: the new value of the autodelete flag.
       """
       instance_client = compute_v1.InstancesClient()
       instance = instance_client.get(
           project=project_id, zone=zone, instance=instance_name
       )
   
       for disk in instance.disks:
           if disk.device_name == disk_name:
               break
       else:
           raise RuntimeError(
               f"Instance {instance_name} doesn't have a disk named {disk_name} attached."
           )
   
       disk.auto_delete = autodelete
   
       operation = instance_client.update(
           project=project_id,
           zone=zone,
           instance=instance_name,
           instance_resource=instance,
       )
   
       wait_for_extended_operation(operation, "disk update")
   
   

3. 使用永久性磁盘快照创建数据的备份。

   为保险起见，请在永久性磁盘仍挂接到虚拟机时使用永久性磁盘快照创建数据的备份。在截取快照之前，请务必遵循快照最佳做法，确保快照与永久性磁盘的状态一致。

   注意：如果您运行的是 Windows 虚拟机，必须先终止该虚拟机，然后才能创建快照。按照步骤为 Windows 虚拟机创建快照。

   清空磁盘缓冲区后，按如下所示创建快照：

   from __future__ import annotations
   
   import sys
   from typing import Any
   
   from google.api_core.extended_operation import ExtendedOperation
   from google.cloud import compute_v1
   
   
   def wait_for_extended_operation(
       operation: ExtendedOperation, verbose_name: str = "operation", timeout: int = 300
   ) -> Any:
       """
       Waits for the extended (long-running) operation to complete.
   
       If the operation is successful, it will return its result.
       If the operation ends with an error, an exception will be raised.
       If there were any warnings during the execution of the operation
       they will be printed to sys.stderr.
   
       Args:
           operation: a long-running operation you want to wait on.
           verbose_name: (optional) a more verbose name of the operation,
               used only during error and warning reporting.
           timeout: how long (in seconds) to wait for operation to finish.
               If None, wait indefinitely.
   
       Returns:
           Whatever the operation.result() returns.
   
       Raises:
           This method will raise the exception received from `operation.exception()`
           or RuntimeError if there is no exception set, but there is an `error_code`
           set for the `operation`.
   
           In case of an operation taking longer than `timeout` seconds to complete,
           a `concurrent.futures.TimeoutError` will be raised.
       """
       result = operation.result(timeout=timeout)
   
       if operation.error_code:
           print(
               f"Error during {verbose_name}: [Code: {operation.error_code}]: {operation.error_message}",
               file=sys.stderr,
               flush=True,
           )
           print(f"Operation ID: {operation.name}", file=sys.stderr, flush=True)
           raise operation.exception() or RuntimeError(operation.error_message)
   
       if operation.warnings:
           print(f"Warnings during {verbose_name}:\n", file=sys.stderr, flush=True)
           for warning in operation.warnings:
               print(f" - {warning.code}: {warning.message}", file=sys.stderr, flush=True)
   
       return result
   
   
   def create_snapshot(
       project_id: str,
       disk_name: str,
       snapshot_name: str,
       *,
       zone: str | None = None,
       region: str | None = None,
       location: str | None = None,
       disk_project_id: str | None = None,
   ) -> compute_v1.Snapshot:
       """
       Create a snapshot of a disk.
   
       You need to pass `zone` or `region` parameter relevant to the disk you want to
       snapshot, but not both. Pass `zone` parameter for zonal disks and `region` for
       regional disks.
   
       Args:
           project_id: project ID or project number of the Cloud project you want
               to use to store the snapshot.
           disk_name: name of the disk you want to snapshot.
           snapshot_name: name of the snapshot to be created.
           zone: name of the zone in which is the disk you want to snapshot (for zonal disks).
           region: name of the region in which is the disk you want to snapshot (for regional disks).
           location: The Cloud Storage multi-region or the Cloud Storage region where you
               want to store your snapshot.
               You can specify only one storage location. Available locations:
               https://cloud.google.com/storage/docs/locations#available-locations
           disk_project_id: project ID or project number of the Cloud project that
               hosts the disk you want to snapshot. If not provided, will look for
               the disk in the `project_id` project.
   
       Returns:
           The new snapshot instance.
       """
       if zone is None and region is None:
           raise RuntimeError(
               "You need to specify `zone` or `region` for this function to work."
           )
       if zone is not None and region is not None:
           raise RuntimeError("You can't set both `zone` and `region` parameters.")
   
       if disk_project_id is None:
           disk_project_id = project_id
   
       if zone is not None:
           disk_client = compute_v1.DisksClient()
           disk = disk_client.get(project=disk_project_id, zone=zone, disk=disk_name)
       else:
           regio_disk_client = compute_v1.RegionDisksClient()
           disk = regio_disk_client.get(
               project=disk_project_id, region=region, disk=disk_name
           )
   
       snapshot = compute_v1.Snapshot()
       snapshot.source_disk = disk.self_link
       snapshot.name = snapshot_name
       if location:
           snapshot.storage_locations = [location]
   
       snapshot_client = compute_v1.SnapshotsClient()
       operation = snapshot_client.insert(project=project_id, snapshot_resource=snapshot)
   
       wait_for_extended_operation(operation, "snapshot creation")
   
       return snapshot_client.get(project=project_id, snapshot=snapshot_name)
   
   

4. 从源可用区中删除虚拟机。

   from __future__ import annotations
   
   import sys
   from typing import Any
   
   from google.api_core.extended_operation import ExtendedOperation
   from google.cloud import compute_v1
   
   
   def wait_for_extended_operation(
       operation: ExtendedOperation, verbose_name: str = "operation", timeout: int = 300
   ) -> Any:
       """
       Waits for the extended (long-running) operation to complete.
   
       If the operation is successful, it will return its result.
       If the operation ends with an error, an exception will be raised.
       If there were any warnings during the execution of the operation
       they will be printed to sys.stderr.
   
       Args:
           operation: a long-running operation you want to wait on.
           verbose_name: (optional) a more verbose name of the operation,
               used only during error and warning reporting.
           timeout: how long (in seconds) to wait for operation to finish.
               If None, wait indefinitely.
   
       Returns:
           Whatever the operation.result() returns.
   
       Raises:
           This method will raise the exception received from `operation.exception()`
           or RuntimeError if there is no exception set, but there is an `error_code`
           set for the `operation`.
   
           In case of an operation taking longer than `timeout` seconds to complete,
           a `concurrent.futures.TimeoutError` will be raised.
       """
       result = operation.result(timeout=timeout)
   
       if operation.error_code:
           print(
               f"Error during {verbose_name}: [Code: {operation.error_code}]: {operation.error_message}",
               file=sys.stderr,
               flush=True,
           )
           print(f"Operation ID: {operation.name}", file=sys.stderr, flush=True)
           raise operation.exception() or RuntimeError(operation.error_message)
   
       if operation.warnings:
           print(f"Warnings during {verbose_name}:\n", file=sys.stderr, flush=True)
           for warning in operation.warnings:
               print(f" - {warning.code}: {warning.message}", file=sys.stderr, flush=True)
   
       return result
   
   
   def delete_instance(project_id: str, zone: str, machine_name: str) -> None:
       """
       Send an instance deletion request to the Compute Engine API and wait for it to complete.
   
       Args:
           project_id: project ID or project number of the Cloud project you want to use.
           zone: name of the zone you want to use. For example: “us-west3-b”
           machine_name: name of the machine you want to delete.
       """
       instance_client = compute_v1.InstancesClient()
   
       print(f"Deleting {machine_name} from {zone}...")
       operation = instance_client.delete(
           project=project_id, zone=zone, instance=machine_name
       )
       wait_for_extended_operation(operation, "instance deletion")
       print(f"Instance {machine_name} deleted.")
   
   

5. 接着，创建启动磁盘和数据磁盘的另一个快照。

   from __future__ import annotations
   
   import sys
   from typing import Any
   
   from google.api_core.extended_operation import ExtendedOperation
   from google.cloud import compute_v1
   
   
   def wait_for_extended_operation(
       operation: ExtendedOperation, verbose_name: str = "operation", timeout: int = 300
   ) -> Any:
       """
       Waits for the extended (long-running) operation to complete.
   
       If the operation is successful, it will return its result.
       If the operation ends with an error, an exception will be raised.
       If there were any warnings during the execution of the operation
       they will be printed to sys.stderr.
   
       Args:
           operation: a long-running operation you want to wait on.
           verbose_name: (optional) a more verbose name of the operation,
               used only during error and warning reporting.
           timeout: how long (in seconds) to wait for operation to finish.
               If None, wait indefinitely.
   
       Returns:
           Whatever the operation.result() returns.
   
       Raises:
           This method will raise the exception received from `operation.exception()`
           or RuntimeError if there is no exception set, but there is an `error_code`
           set for the `operation`.
   
           In case of an operation taking longer than `timeout` seconds to complete,
           a `concurrent.futures.TimeoutError` will be raised.
       """
       result = operation.result(timeout=timeout)
   
       if operation.error_code:
           print(
               f"Error during {verbose_name}: [Code: {operation.error_code}]: {operation.error_message}",
               file=sys.stderr,
               flush=True,
           )
           print(f"Operation ID: {operation.name}", file=sys.stderr, flush=True)
           raise operation.exception() or RuntimeError(operation.error_message)
   
       if operation.warnings:
           print(f"Warnings during {verbose_name}:\n", file=sys.stderr, flush=True)
           for warning in operation.warnings:
               print(f" - {warning.code}: {warning.message}", file=sys.stderr, flush=True)
   
       return result
   
   
   def create_snapshot(
       project_id: str,
       disk_name: str,
       snapshot_name: str,
       *,
       zone: str | None = None,
       region: str | None = None,
       location: str | None = None,
       disk_project_id: str | None = None,
   ) -> compute_v1.Snapshot:
       """
       Create a snapshot of a disk.
   
       You need to pass `zone` or `region` parameter relevant to the disk you want to
       snapshot, but not both. Pass `zone` parameter for zonal disks and `region` for
       regional disks.
   
       Args:
           project_id: project ID or project number of the Cloud project you want
               to use to store the snapshot.
           disk_name: name of the disk you want to snapshot.
           snapshot_name: name of the snapshot to be created.
           zone: name of the zone in which is the disk you want to snapshot (for zonal disks).
           region: name of the region in which is the disk you want to snapshot (for regional disks).
           location: The Cloud Storage multi-region or the Cloud Storage region where you
               want to store your snapshot.
               You can specify only one storage location. Available locations:
               https://cloud.google.com/storage/docs/locations#available-locations
           disk_project_id: project ID or project number of the Cloud project that
               hosts the disk you want to snapshot. If not provided, will look for
               the disk in the `project_id` project.
   
       Returns:
           The new snapshot instance.
       """
       if zone is None and region is None:
           raise RuntimeError(
               "You need to specify `zone` or `region` for this function to work."
           )
       if zone is not None and region is not None:
           raise RuntimeError("You can't set both `zone` and `region` parameters.")
   
       if disk_project_id is None:
           disk_project_id = project_id
   
       if zone is not None:
           disk_client = compute_v1.DisksClient()
           disk = disk_client.get(project=disk_project_id, zone=zone, disk=disk_name)
       else:
           regio_disk_client = compute_v1.RegionDisksClient()
           disk = regio_disk_client.get(
               project=disk_project_id, region=region, disk=disk_name
           )
   
       snapshot = compute_v1.Snapshot()
       snapshot.source_disk = disk.self_link
       snapshot.name = snapshot_name
       if location:
           snapshot.storage_locations = [location]
   
       snapshot_client = compute_v1.SnapshotsClient()
       operation = snapshot_client.insert(project=project_id, snapshot_resource=snapshot)
   
       wait_for_extended_operation(operation, "snapshot creation")
   
       return snapshot_client.get(project=project_id, snapshot=snapshot_name)
   
   

6. （可选）删除永久性磁盘。

   如果打算为新磁盘重复使用永久性磁盘的名称，必须删除现有磁盘以释放这些名称。此外，删除磁盘还可以节省永久性磁盘存储费用。

   如果您不打算重复使用相同的磁盘名称，您无需将其删除。

   from __future__ import annotations
   
   import sys
   from typing import Any
   
   from google.api_core.extended_operation import ExtendedOperation
   from google.cloud import compute_v1
   
   
   def wait_for_extended_operation(
       operation: ExtendedOperation, verbose_name: str = "operation", timeout: int = 300
   ) -> Any:
       """
       Waits for the extended (long-running) operation to complete.
   
       If the operation is successful, it will return its result.
       If the operation ends with an error, an exception will be raised.
       If there were any warnings during the execution of the operation
       they will be printed to sys.stderr.
   
       Args:
           operation: a long-running operation you want to wait on.
           verbose_name: (optional) a more verbose name of the operation,
               used only during error and warning reporting.
           timeout: how long (in seconds) to wait for operation to finish.
               If None, wait indefinitely.
   
       Returns:
           Whatever the operation.result() returns.
   
       Raises:
           This method will raise the exception received from `operation.exception()`
           or RuntimeError if there is no exception set, but there is an `error_code`
           set for the `operation`.
   
           In case of an operation taking longer than `timeout` seconds to complete,
           a `concurrent.futures.TimeoutError` will be raised.
       """
       result = operation.result(timeout=timeout)
   
       if operation.error_code:
           print(
               f"Error during {verbose_name}: [Code: {operation.error_code}]: {operation.error_message}",
               file=sys.stderr,
               flush=True,
           )
           print(f"Operation ID: {operation.name}", file=sys.stderr, flush=True)
           raise operation.exception() or RuntimeError(operation.error_message)
   
       if operation.warnings:
           print(f"Warnings during {verbose_name}:\n", file=sys.stderr, flush=True)
           for warning in operation.warnings:
               print(f" - {warning.code}: {warning.message}", file=sys.stderr, flush=True)
   
       return result
   
   
   def delete_disk(project_id: str, zone: str, disk_name: str) -> None:
       """
       Deletes a disk from a project.
   
       Args:
           project_id: project ID or project number of the Cloud project you want to use.
           zone: name of the zone in which is the disk you want to delete.
           disk_name: name of the disk you want to delete.
       """
       disk_client = compute_v1.DisksClient()
       operation = disk_client.delete(project=project_id, zone=zone, disk=disk_name)
       wait_for_extended_operation(operation, "disk deletion")
   
   

7. 使用创建的快照在目标可用区中创建新的永久性磁盘。首先创建启动磁盘，然后创建数据磁盘。

   from __future__ import annotations
   
   import sys
   from typing import Any
   
   from google.api_core.extended_operation import ExtendedOperation
   from google.cloud import compute_v1
   
   
   def wait_for_extended_operation(
       operation: ExtendedOperation, verbose_name: str = "operation", timeout: int = 300
   ) -> Any:
       """
       Waits for the extended (long-running) operation to complete.
   
       If the operation is successful, it will return its result.
       If the operation ends with an error, an exception will be raised.
       If there were any warnings during the execution of the operation
       they will be printed to sys.stderr.
   
       Args:
           operation: a long-running operation you want to wait on.
           verbose_name: (optional) a more verbose name of the operation,
               used only during error and warning reporting.
           timeout: how long (in seconds) to wait for operation to finish.
               If None, wait indefinitely.
   
       Returns:
           Whatever the operation.result() returns.
   
       Raises:
           This method will raise the exception received from `operation.exception()`
           or RuntimeError if there is no exception set, but there is an `error_code`
           set for the `operation`.
   
           In case of an operation taking longer than `timeout` seconds to complete,
           a `concurrent.futures.TimeoutError` will be raised.
       """
       result = operation.result(timeout=timeout)
   
       if operation.error_code:
           print(
               f"Error during {verbose_name}: [Code: {operation.error_code}]: {operation.error_message}",
               file=sys.stderr,
               flush=True,
           )
           print(f"Operation ID: {operation.name}", file=sys.stderr, flush=True)
           raise operation.exception() or RuntimeError(operation.error_message)
   
       if operation.warnings:
           print(f"Warnings during {verbose_name}:\n", file=sys.stderr, flush=True)
           for warning in operation.warnings:
               print(f" - {warning.code}: {warning.message}", file=sys.stderr, flush=True)
   
       return result
   
   
   def create_disk_from_snapshot(
       project_id: str,
       zone: str,
       disk_name: str,
       disk_type: str,
       disk_size_gb: int,
       snapshot_link: str,
   ) -> compute_v1.Disk:
       """
       Creates a new disk in a project in given zone.
   
       Args:
           project_id: project ID or project number of the Cloud project you want to use.
           zone: name of the zone in which you want to create the disk.
           disk_name: name of the disk you want to create.
           disk_type: the type of disk you want to create. This value uses the following format:
               "zones/{zone}/diskTypes/(pd-standard|pd-ssd|pd-balanced|pd-extreme)".
               For example: "zones/us-west3-b/diskTypes/pd-ssd"
           disk_size_gb: size of the new disk in gigabytes
           snapshot_link: a link to the snapshot you want to use as a source for the new disk.
               This value uses the following format: "projects/{project_name}/global/snapshots/{snapshot_name}"
   
       Returns:
           An unattached Disk instance.
       """
       disk_client = compute_v1.DisksClient()
       disk = compute_v1.Disk()
       disk.zone = zone
       disk.size_gb = disk_size_gb
       disk.source_snapshot = snapshot_link
       disk.type_ = disk_type
       disk.name = disk_name
       operation = disk_client.insert(project=project_id, zone=zone, disk_resource=disk)
   
       wait_for_extended_operation(operation, "disk creation")
   
       return disk_client.get(project=project_id, zone=zone, disk=disk_name)
   
   

8. 使用目标可用区中的新磁盘重新创建虚拟机。

   from __future__ import annotations
   
   import re
   import sys
   from typing import Any
   import warnings
   
   from google.api_core.extended_operation import ExtendedOperation
   from google.cloud import compute_v1
   
   
   def get_disk(project_id: str, zone: str, disk_name: str) -> compute_v1.Disk:
       """
       Gets a disk from a project.
   
       Args:
           project_id: project ID or project number of the Cloud project you want to use.
           zone: name of the zone where the disk exists.
           disk_name: name of the disk you want to retrieve.
       """
       disk_client = compute_v1.DisksClient()
       return disk_client.get(project=project_id, zone=zone, disk=disk_name)
   
   
   def wait_for_extended_operation(
       operation: ExtendedOperation, verbose_name: str = "operation", timeout: int = 300
   ) -> Any:
       """
       Waits for the extended (long-running) operation to complete.
   
       If the operation is successful, it will return its result.
       If the operation ends with an error, an exception will be raised.
       If there were any warnings during the execution of the operation
       they will be printed to sys.stderr.
   
       Args:
           operation: a long-running operation you want to wait on.
           verbose_name: (optional) a more verbose name of the operation,
               used only during error and warning reporting.
           timeout: how long (in seconds) to wait for operation to finish.
               If None, wait indefinitely.
   
       Returns:
           Whatever the operation.result() returns.
   
       Raises:
           This method will raise the exception received from `operation.exception()`
           or RuntimeError if there is no exception set, but there is an `error_code`
           set for the `operation`.
   
           In case of an operation taking longer than `timeout` seconds to complete,
           a `concurrent.futures.TimeoutError` will be raised.
       """
       result = operation.result(timeout=timeout)
   
       if operation.error_code:
           print(
               f"Error during {verbose_name}: [Code: {operation.error_code}]: {operation.error_message}",
               file=sys.stderr,
               flush=True,
           )
           print(f"Operation ID: {operation.name}", file=sys.stderr, flush=True)
           raise operation.exception() or RuntimeError(operation.error_message)
   
       if operation.warnings:
           print(f"Warnings during {verbose_name}:\n", file=sys.stderr, flush=True)
           for warning in operation.warnings:
               print(f" - {warning.code}: {warning.message}", file=sys.stderr, flush=True)
   
       return result
   
   
   def create_instance(
       project_id: str,
       zone: str,
       instance_name: str,
       disks: list[compute_v1.AttachedDisk],
       machine_type: str = "n1-standard-1",
       network_link: str = "global/networks/default",
       subnetwork_link: str = None,
       internal_ip: str = None,
       external_access: bool = False,
       external_ipv4: str = None,
       accelerators: list[compute_v1.AcceleratorConfig] = None,
       preemptible: bool = False,
       spot: bool = False,
       instance_termination_action: str = "STOP",
       custom_hostname: str = None,
       delete_protection: bool = False,
   ) -> compute_v1.Instance:
       """
       Send an instance creation request to the Compute Engine API and wait for it to complete.
   
       Args:
           project_id: project ID or project number of the Cloud project you want to use.
           zone: name of the zone to create the instance in. For example: "us-west3-b"
           instance_name: name of the new virtual machine (VM) instance.
           disks: a list of compute_v1.AttachedDisk objects describing the disks
               you want to attach to your new instance.
           machine_type: machine type of the VM being created. This value uses the
               following format: "zones/{zone}/machineTypes/{type_name}".
               For example: "zones/europe-west3-c/machineTypes/f1-micro"
           network_link: name of the network you want the new instance to use.
               For example: "global/networks/default" represents the network
               named "default", which is created automatically for each project.
           subnetwork_link: name of the subnetwork you want the new instance to use.
               This value uses the following format:
               "regions/{region}/subnetworks/{subnetwork_name}"
           internal_ip: internal IP address you want to assign to the new instance.
               By default, a free address from the pool of available internal IP addresses of
               used subnet will be used.
           external_access: boolean flag indicating if the instance should have an external IPv4
               address assigned.
           external_ipv4: external IPv4 address to be assigned to this instance. If you specify
               an external IP address, it must live in the same region as the zone of the instance.
               This setting requires `external_access` to be set to True to work.
           accelerators: a list of AcceleratorConfig objects describing the accelerators that will
               be attached to the new instance.
           preemptible: boolean value indicating if the new instance should be preemptible
               or not. Preemptible VMs have been deprecated and you should now use Spot VMs.
           spot: boolean value indicating if the new instance should be a Spot VM or not.
           instance_termination_action: What action should be taken once a Spot VM is terminated.
               Possible values: "STOP", "DELETE"
           custom_hostname: Custom hostname of the new VM instance.
               Custom hostnames must conform to RFC 1035 requirements for valid hostnames.
           delete_protection: boolean value indicating if the new virtual machine should be
               protected against deletion or not.
       Returns:
           Instance object.
       """
       instance_client = compute_v1.InstancesClient()
   
       # Use the network interface provided in the network_link argument.
       network_interface = compute_v1.NetworkInterface()
       network_interface.network = network_link
       if subnetwork_link:
           network_interface.subnetwork = subnetwork_link
   
       if internal_ip:
           network_interface.network_i_p = internal_ip
   
       if external_access:
           access = compute_v1.AccessConfig()
           access.type_ = compute_v1.AccessConfig.Type.ONE_TO_ONE_NAT.name
           access.name = "External NAT"
           access.network_tier = access.NetworkTier.PREMIUM.name
           if external_ipv4:
               access.nat_i_p = external_ipv4
           network_interface.access_configs = [access]
   
       # Collect information into the Instance object.
       instance = compute_v1.Instance()
       instance.network_interfaces = [network_interface]
       instance.name = instance_name
       instance.disks = disks
       if re.match(r"^zones/[a-z\d\-]+/machineTypes/[a-z\d\-]+$", machine_type):
           instance.machine_type = machine_type
       else:
           instance.machine_type = f"zones/{zone}/machineTypes/{machine_type}"
   
       instance.scheduling = compute_v1.Scheduling()
       if accelerators:
           instance.guest_accelerators = accelerators
           instance.scheduling.on_host_maintenance = (
               compute_v1.Scheduling.OnHostMaintenance.TERMINATE.name
           )
   
       if preemptible:
           # Set the preemptible setting
           warnings.warn(
               "Preemptible VMs are being replaced by Spot VMs.", DeprecationWarning
           )
           instance.scheduling = compute_v1.Scheduling()
           instance.scheduling.preemptible = True
   
       if spot:
           # Set the Spot VM setting
           instance.scheduling.provisioning_model = (
               compute_v1.Scheduling.ProvisioningModel.SPOT.name
           )
           instance.scheduling.instance_termination_action = instance_termination_action
   
       if custom_hostname is not None:
           # Set the custom hostname for the instance
           instance.hostname = custom_hostname
   
       if delete_protection:
           # Set the delete protection bit
           instance.deletion_protection = True
   
       # Prepare the request to insert an instance.
       request = compute_v1.InsertInstanceRequest()
       request.zone = zone
       request.project = project_id
       request.instance_resource = instance
   
       # Wait for the create operation to complete.
       print(f"Creating the {instance_name} instance in {zone}...")
   
       operation = instance_client.insert(request=request)
   
       wait_for_extended_operation(operation, "instance creation")
   
       print(f"Instance {instance_name} created.")
       return instance_client.get(project=project_id, zone=zone, instance=instance_name)
   
   
   def create_with_existing_disks(
       project_id: str, zone: str, instance_name: str, disk_names: list[str]
   ) -> compute_v1.Instance:
       """
       Create a new VM instance using selected disks. The first disk in disk_names will
       be used as boot disk.
   
       Args:
           project_id: project ID or project number of the Cloud project you want to use.
           zone: name of the zone to create the instance in. For example: "us-west3-b"
           instance_name: name of the new virtual machine (VM) instance.
           disk_names: list of disk names to be attached to the new virtual machine.
               First disk in this list will be used as the boot device.
   
       Returns:
           Instance object.
       """
       assert len(disk_names) >= 1
       disks = [get_disk(project_id, zone, disk_name) for disk_name in disk_names]
       attached_disks = []
       for disk in disks:
           adisk = compute_v1.AttachedDisk()
           adisk.source = disk.self_link
           attached_disks.append(adisk)
       attached_disks[0].boot = True
       instance = create_instance(project_id, zone, instance_name, attached_disks)
       return instance
   
   

9. （可选）删除临时磁盘快照。在您确认虚拟机已完成移动后，可删除创建的临时快照以节省存储费用。

   from __future__ import annotations
   
   import sys
   from typing import Any
   
   from google.api_core.extended_operation import ExtendedOperation
   from google.cloud import compute_v1
   
   
   def wait_for_extended_operation(
       operation: ExtendedOperation, verbose_name: str = "operation", timeout: int = 300
   ) -> Any:
       """
       Waits for the extended (long-running) operation to complete.
   
       If the operation is successful, it will return its result.
       If the operation ends with an error, an exception will be raised.
       If there were any warnings during the execution of the operation
       they will be printed to sys.stderr.
   
       Args:
           operation: a long-running operation you want to wait on.
           verbose_name: (optional) a more verbose name of the operation,
               used only during error and warning reporting.
           timeout: how long (in seconds) to wait for operation to finish.
               If None, wait indefinitely.
   
       Returns:
           Whatever the operation.result() returns.
   
       Raises:
           This method will raise the exception received from `operation.exception()`
           or RuntimeError if there is no exception set, but there is an `error_code`
           set for the `operation`.
   
           In case of an operation taking longer than `timeout` seconds to complete,
           a `concurrent.futures.TimeoutError` will be raised.
       """
       result = operation.result(timeout=timeout)
   
       if operation.error_code:
           print(
               f"Error during {verbose_name}: [Code: {operation.error_code}]: {operation.error_message}",
               file=sys.stderr,
               flush=True,
           )
           print(f"Operation ID: {operation.name}", file=sys.stderr, flush=True)
           raise operation.exception() or RuntimeError(operation.error_message)
   
       if operation.warnings:
           print(f"Warnings during {verbose_name}:\n", file=sys.stderr, flush=True)
           for warning in operation.warnings:
               print(f" - {warning.code}: {warning.message}", file=sys.stderr, flush=True)
   
       return result
   
   
   def delete_snapshot(project_id: str, snapshot_name: str) -> None:
       """
       Delete a snapshot of a disk.
   
       Args:
           project_id: project ID or project number of the Cloud project you want to use.
           snapshot_name: name of the snapshot to delete.
       """
   
       snapshot_client = compute_v1.SnapshotsClient()
       operation = snapshot_client.delete(project=project_id, snapshot=snapshot_name)
   
       wait_for_extended_operation(operation, "snapshot deletion")
   
   

后续步骤

• 了解如何为项目更改默认地区/区域。
• 了解实时迁移。
• 检查虚拟机的状态。
• 了解如何将虚拟机迁移到 Compute Engine。