如何获取集群磁盘的磁盘空间统计资料

Question

我有一个工作程序，可以从远程服务器上检索磁盘信息，如自由空间、总空间等。然而我有一个问题，我不能为所有的人获得相同的统计数据。集群磁盘 服务器上配置的信息。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，如下图所示。

    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;
    }

我已经登录到服务器，并注意到其他磁盘显示为集群磁盘。

我研究了一下关于集群磁盘或集群共享卷，但我看到的唯一指南包括Powershell脚本，如这里。ClusteredSharedVolume磁盘空间。.

我的问题是--我怎样才能写一个WMI查询，也能检索集群磁盘的信息。确切地说，我怎样才能根据我的需要调整所提供链接中的查询。

    $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

解决方案需要调用C#中的Powershell脚本。

1. 添加System.Management.Automation参考

这个dll可以访问Powershell实用程序。Nuget上可用的包似乎在前面，而且没有被识别，所以我不得不手动添加参考文献>>添加参考文献>>浏览>>C:\\Windowsassembly/GAC_MSIL/System.Management.Automation/1.0.0.0__31bf3856ad364e35。

使用Powershell，我可以通过命令获取所有Clustered Disks的磁盘信息。

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

2. 在代码中调用这个命令我添加了一个扩展方法，检查远程主机是否有Clustered Disks（如果有）。如果它确实有，则使用Powershell脚本，如果没有则使用普通的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;
    }

并用Helper方法来检查。

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