Question

我想从我的私人容器中挂载vhd。谷歌之后，我得到它只能通过.net。我更像是一个JAVA人。我需要一个c＃中的批处理脚本或代码（这样我可以获得一个exe文件），它可以在启动时自动运行并挂载vhd。所以我决定创建一个控制台应用程序以获取exe文件。（我对c＃/ Visual studio知之甚少）我正在使用C＃console应用程序执行此操作。

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Net;
using System.Threading;
using Microsoft.WindowsAzure;
using Microsoft.WindowsAzure.Diagnostics;
using Microsoft.WindowsAzure.ServiceRuntime;
using Microsoft.WindowsAzure.StorageClient;

using Microsoft.WindowsAzure.Internal;

namespace WorkerRole1
{
public class WorkerRole : RoleEntryPoint
{
    public override void Run()
    {
        // This is a sample worker implementation. Replace with your logic.
        Trace.WriteLine("WorkerRole1 entry point called", "Starting");
        MountDrive();

        //while (true)
        //{
        //    Thread.Sleep(10000);
        //    Trace.WriteLine("Working", "Information");
        //}
    }

    public override bool OnStart()
    {
        // Set the maximum number of concurrent connections 
        ServicePointManager.DefaultConnectionLimit = 12;

        // For information on handling configuration changes
        // see the MSDN topic at http://go.microsoft.com/fwlink/?LinkId=166357.

        return base.OnStart();
    }

    public void MountDrive()
    {
        string connectionStringSettingName = "DefaultEndpointsProtocol=http;AccountName=abc;AccountKey=xyz";
        string azureContainerName = "vhds";
        string vhdName = "myvhd.vhd";
        CloudStorageAccount storageAccount = CloudStorageAccount.Parse(connectionStringSettingName);
        //CloudStorageAccount storageAccount = CloudStorageAccount.DevelopmentStorageAccount;

        LocalResource localCache = RoleEnvironment.GetLocalResource("MyAzureDriveCache");
        CloudDrive.InitializeCache(localCache.RootPath, localCache.MaximumSizeInMegabytes);
        Trace.WriteLine("RootPath =====" + localCache.RootPath);
        Trace.WriteLine("MaximumSizeInMegabytes =====" + localCache.MaximumSizeInMegabytes);
        // Just checking: make sure the container exists
        CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
        blobClient.GetContainerReference(azureContainerName).CreateIfNotExist();

        // Create cloud drive
        CloudDrive myCloudDrive = storageAccount.CreateCloudDrive(
            blobClient
            .GetContainerReference(azureContainerName)
            .GetPageBlobReference(vhdName)
            .Uri.ToString()
        );
        Trace.WriteLine("Uri =====" + blobClient
            .GetContainerReference(azureContainerName)
            .GetPageBlobReference(vhdName)
            .Uri.ToString());

        try
        {
            myCloudDrive.Create(1024);
        }
        catch (CloudDriveException ex)
        {
            // handle exception here
            // exception is also thrown if all is well but the drive already exists
        }

        string driveLetter = myCloudDrive.Mount(50, DriveMountOptions.Force);//Here It throws a Exception
        Trace.WriteLine("Drive =====" + driveLetter);

        for (int i = 0; i < 10; i++)
        {
            System.IO.File.WriteAllText(driveLetter + "\\" + i.ToString() + ".txt", "Test");
        }


    }

}
}

但我一直在

处获得异常ERROR_DEVFABRIC_LOCAL_MOUNT_ONLY

string driveLetter = myCloudDrive.Mount(50, DriveMountOptions.Force);

请告诉我哪里出错了？

Answer 1

当RoleEnvironment.IsAvailable设置为 false 时，这意味着您没有在Windows Azure Web /工作人员/ VM角色中运行。 Windows Azure驱动器仅在以这些角色挂载时才起作用（因为它取决于RoleEnvironment）。

更多信息可在whitepaper。

中找到

Answer 2

ERROR_DEVFABRIC_LOCAL_MOUNT_ONLY表示当您在本地运行时，必须安装驱动器表单开发存储。

更改以下行：

string connectionStringSettingName = "UseDevelopmentStorage=true";

甚至更好地使用RoleEnvironment.GetConfigurationSettingValue，例如：

string connectionStringSettingName = RoleEnvironment.GetConfigurationSettingValue("DriveConnectionString");

并在服务配置（文件）中设置设置

用于安装azure云驱动器的控制台应用程序

2 个答案: