如何获取群集磁盘的磁盘空间统计信息

Question

我有一个可以从远程服务器检索磁盘信息的工作程序，例如 FreeSpace、TotalSpace 等。但是我有一个问题，我无法为服务器上配置的所有 集群磁盘 获得相同的统计信息。该查询只返回本地磁盘（逻辑磁盘）的信息。

我可以得到本地磁盘(:C) 的大小，如下所示：

    public List<Disk> GetEnvironmentStatistics()
    {
        var serverIP = Convert.ToString(System.Web.HttpContext.Current.Session["ServerIP"]); 

        List<Disk> diskinfo = new List<Disk>();

        //Add System.Management to access these utilities
        ConnectionOptions options = new ConnectionOptions
        {

            Username = Convert.ToString(System.Web.HttpContext.Current.Session["Username"]),
            Password = Convert.ToString(System.Web.HttpContext.Current.Session["Password"]),
            Authority = Convert.ToString(System.Web.HttpContext.Current.Session["Authority"]),
        };

        //root - root of the tree, cimv2 - version           
        ManagementScope scope = new ManagementScope("\\\\" + serverIP + "\\root\\CIMV2", options);
        scope.Connect();

        SelectQuery query = new SelectQuery("Select * from Win32_LogicalDisk");
        ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query);
        ManagementObjectCollection queryCollection = searcher.Get();


            foreach (ManagementObject mo in queryCollection)
            {
                Disk disk = new Disk();
                disk.DiskName = mo["Name"].ToString();                  
                disk.DeviceId = mo["DeviceID"].ToString();
                disk.SystemName = mo["SystemName"].ToString();

                disk.FreeSpace = Convert.ToDecimal(mo["FreeSpace"]);
                var formattedFreeSpace = Helpers.DiskSpaceInGigabytes(disk.FreeSpace ?? 0);
                disk.FreeSpace = Decimal.Truncate(formattedFreeSpace);

                disk.TotalSpace = Convert.ToDecimal(mo["Size"]);
                var formattedTotalSpace = Helpers.DiskSpaceInGigabytes(disk.TotalSpace ?? 0);
                disk.TotalSpace = Decimal.Truncate(formattedTotalSpace);

                disk.UsedSpace = disk.TotalSpace - disk.FreeSpace;

                var HDPercentageUsed = 100 - (100 * disk.FreeSpace / disk.TotalSpace);
                disk.PercentageUsed = Convert.ToInt32(HDPercentageUsed);
                diskinfo.Add(disk);
            }



        return diskinfo;
    }

我已登录服务器并注意到其他磁盘显示为集群磁盘。

我对集群磁盘或集群共享卷进行了一些研究，但我看到的唯一指南包括 Powershell 脚本，如下所示：ClusteredSharedVolume Disk Space。

我的问题 - 我如何编写一个 WMI 查询来检索集群磁盘的信息。正是我如何根据我的需要调整提供的链接中的查询：

    $resources = Get-WmiObject -namespace root\MSCluster MSCluster_Resource -filter "Type='Physical 
    Disk'"
    $resources | foreach {
       $res = $_
        $disks = $res.GetRelated("MSCluster_Disk")
$disks | foreach {
    $_.GetRelated("MSCluster_DiskPartition") |
        select @{N="Name"; E={$res.Name}}, @{N="Status"; E={$res.State}}, Path, VolumeLabel, TotalSize, FreeSpace 
}
    } | ft

Answer 1

解决方案需要在 C# 中调用 Powershell 脚本：

1.添加 System.Management.Automation 参考

此 dll 允许访问 Powershell 实用程序。 Nuget 上可用的包似乎提前并且没有被识别，所以我不得不手动添加 Reference by References >> Add Reference >> Browse >> C:\Windows\assembly\GAC_MSIL\System.Management.Automation\1.0.0.0__31bf3856ad364e35

使用 Powershell 我可以通过以下命令获取所有集群磁盘的磁盘信息：

get-WmiObject win32_logicaldisk -Computername (ComputerName or IPAddress here)

2。在代码中调用此命令 我添加了一个扩展方法来检查远程主机是否有 Clustered Disks (if any) 。如果确实有，则使用 Powershell 脚本，如果没有，则使用普通 WMI 查询：

public List<Disk> GetEnvironmentStatistics()
    {

        List<Disk> diskinfo = new List<Disk>();

        var serverIP = Convert.ToString(System.Web.HttpContext.Current.Session["ServerIP"]);
        var clusterDisksStatus = CheckForClusteredDisks(serverIP);

        if (Helpers.HasClusteredDisks(clusterDisksStatus))
        {
            string getClusterSharedVolumesStatistics = "get-WmiObject win32_logicaldisk -Computername " + serverIP + "";
            PowerShell ps = PowerShell.Create();              
            ps.AddScript(getClusterSharedVolumesStatistics);
            var results = ps.Invoke();

            foreach (var psobject in results)
            {

                if (psobject != null)
                {
                    Disk clusteredDisk = new Disk();
                    clusteredDisk.DiskName = Convert.ToString(psobject.Members["DeviceID"].Value);

                    clusteredDisk.FreeSpace = Convert.ToDecimal(psobject.Members["FreeSpace"].Value);
                    var formattedFreeSpace = Helpers.DiskSpaceInGigabytes(clusteredDisk.FreeSpace ?? 0);
                    clusteredDisk.FreeSpace = Decimal.Truncate(formattedFreeSpace);


                    clusteredDisk.TotalSpace = Convert.ToDecimal(psobject.Members["Size"].Value);
                    var formattedTotalSpace = Helpers.DiskSpaceInGigabytes(clusteredDisk.TotalSpace ?? 0);
                    clusteredDisk.TotalSpace = Decimal.Truncate(formattedTotalSpace);

                    clusteredDisk.UsedSpace = clusteredDisk.TotalSpace - clusteredDisk.FreeSpace;
                    clusteredDisk.VolumeName = Convert.ToString(psobject.Members["VolumeName"].Value);

                    diskinfo.Add(clusteredDisk);
                }



            }
        }

        else
        {

            //Add System.Management to access these utilities
            ConnectionOptions options = new ConnectionOptions
            {

                Username = Convert.ToString(System.Web.HttpContext.Current.Session["Username"]),
                Password = Convert.ToString(System.Web.HttpContext.Current.Session["Password"]),
                Authority = Convert.ToString(System.Web.HttpContext.Current.Session["Authority"]),
            };

            //root - root of the tree, cimv2 - version           
            ManagementScope scope = new ManagementScope("\\\\" + serverIP + "\\root\\CIMV2", options);
            scope.Connect();

            SelectQuery query = new SelectQuery("Select * from Win32_LogicalDisk");
            ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query);
            ManagementObjectCollection queryCollection = searcher.Get();

            try
            {

                foreach (ManagementObject mo in queryCollection)
                {


                    Disk disk = new Disk();
                    disk.DiskName = mo["Name"].ToString();
                    disk.DeviceId = mo["DeviceID"].ToString();
                    disk.SystemName = mo["SystemName"].ToString();

                    disk.FreeSpace = Convert.ToDecimal(mo["FreeSpace"]);
                    var formattedFreeSpace = Helpers.DiskSpaceInGigabytes(disk.FreeSpace ?? 0);
                    disk.FreeSpace = Decimal.Truncate(formattedFreeSpace);


                    disk.TotalSpace = Convert.ToDecimal(mo["Size"]);
                    var formattedTotalSpace = Helpers.DiskSpaceInGigabytes(disk.TotalSpace ?? 0);
                    disk.TotalSpace = Decimal.Truncate(formattedTotalSpace);

                    disk.UsedSpace = disk.TotalSpace - disk.FreeSpace;

                    var HDPercentageUsed = 100 - (100 * disk.FreeSpace / disk.TotalSpace);
                    disk.PercentageUsed = Convert.ToInt32(HDPercentageUsed);
                    diskinfo.Add(disk);
                }
            }

            catch (DivideByZeroException ex)
            {

                ExceptionLogger.SendErrorToText(ex);
            }

        }
        return diskinfo;
    }

以及检查的Helper方法：

 public static bool HasClusteredDisks(int status)
    {
        int hasClusteredDisks = 1;
        if (status == hasClusteredDisks)
        {
            return true;
        }
        else
        {
            return false;
        }
    }