永続ディスクのサイズを変更する

このサンプルでは、永続ディスクのサイズを GB 単位で指定のサイズに変更します。ディスクをサイズ変更したら、オペレーティング システムが追加の容量にアクセスできるように、ファイル システムのサイズを変更する必要があります。

コードサンプル

Java

このサンプルを試す前に、Compute Engine クイックスタート: クライアント ライブラリの使用に記載されている Java の設定手順に沿って操作します。詳細については、Compute Engine Java API リファレンス ドキュメントをご覧ください。

Compute Engine に対して認証を行うには、アプリケーションのデフォルト認証情報を設定します。詳細については、ローカル開発環境の認証を設定するをご覧ください。

import com.google.cloud.compute.v1.DisksClient;
import com.google.cloud.compute.v1.DisksResizeRequest;
import com.google.cloud.compute.v1.Operation;
import com.google.cloud.compute.v1.ResizeDiskRequest;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

public class ResizeDisk {

  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";

    // Zone of the disk to be resized.
    String diskZone = "us-central1-a";

    // Name of the disk that you want to resize.
    String diskName = "DISK_NAME";

    // The new size you want to set for the disk in gigabytes.
    int newSizeGb = 23;

    resizeDisk(projectId, diskZone, diskName, newSizeGb);
  }

  // Resizes a persistent disk to a specified size in GB. After you resize the disk, you must
  // also resize the file system so that the operating system can access the additional space.
  public static void resizeDisk(String projectId, String diskZone, String diskName, int newSizeGb)
      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()) {

      ResizeDiskRequest resizeDiskRequest = ResizeDiskRequest.newBuilder()
          .setZone(diskZone)
          .setDisksResizeRequestResource(DisksResizeRequest.newBuilder()
              .setSizeGb(newSizeGb)
              .build())
          .setDisk(diskName)
          .setProject(projectId)
          .build();

      Operation response = disksClient.resizeAsync(resizeDiskRequest)
          .get(3, TimeUnit.MINUTES);

      if (response.hasError()) {
        System.out.println("Resize disk failed! " + response);
        return;
      }
      System.out.println("Resize disk - operation status: " + response.getStatus());
    }
  }
}

Python

このサンプルを試す前に、Compute Engine クイックスタート: クライアント ライブラリの使用に記載されている Python の設定手順に沿って操作します。詳細については、Compute Engine Python API リファレンス ドキュメントをご覧ください。

Compute Engine に対して認証を行うには、アプリケーションのデフォルト認証情報を設定します。詳細については、ローカル開発環境の認証を設定するをご覧ください。

from __future__ import annotations

import re
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 resize_disk(project_id: str, disk_link: str, new_size_gb: int) -> None:
    """
    Resizes a persistent disk to a specified size in GB. After you resize the disk, you must
    also resize the file system so that the operating system can access the additional space.

    Args:
        project_id: project ID or project number of the Cloud project you want to use.
        disk_link: a link to the disk you want to resize.
            This value uses the following format:
                * https://www.googleapis.com/compute/v1/projects/{project_name}/zones/{zone}/disks/{disk_name}
                * projects/{project_name}/zones/{zone}/disks/{disk_name}
                * projects/{project_name}/regions/{region}/disks/{disk_name}
        new_size_gb: the new size you want to set for the disk in gigabytes.
    """
    search_results = re.search(
        r"/projects/[\w_-]+/(?P<area_type>zones|regions)/"
        r"(?P<area_name>[\w_-]+)/disks/(?P<disk_name>[\w_-]+)",
        disk_link,
    )

    if search_results["area_type"] == "regions":
        disk_client = compute_v1.RegionDisksClient()
        request = compute_v1.ResizeRegionDiskRequest()
        request.region = search_results["area_name"]
        request.region_disks_resize_request_resource = (
            compute_v1.RegionDisksResizeRequest()
        )
        request.region_disks_resize_request_resource.size_gb = new_size_gb
    else:
        disk_client = compute_v1.DisksClient()
        request = compute_v1.ResizeDiskRequest()
        request.zone = search_results["area_name"]
        request.disks_resize_request_resource = compute_v1.DisksResizeRequest()
        request.disks_resize_request_resource.size_gb = new_size_gb

    request.disk = search_results["disk_name"]
    request.project = project_id

    operation = disk_client.resize(request)
    wait_for_extended_operation(operation, "disk resize")

次のステップ

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