HyperV WMI 在 c# 中应用快照

Question

我想使用 WMI 应用快照并收到名为 "WS-Management service cannot process the request, unknown error: HRESULT 0x8004102f " 的错误如果参数设置错误，就会出现这种情况。所以我觉得跟入参有关系：

uint32 ApplySnapshot(
  [in]  CIM_VirtualSystemSettingData REF Snapshot,
  [out] CIM_ConcreteJob              REF Job
);

Link 到 ApplySnapshot-描述：https://docs.microsoft.com/de-de/windows/win32/hyperv_v2/applysnapshot-msvm-virtualsystemsnapshotservice?redirectedfrom=MSDN#syntax

我应用快照的代码：

public async Task ApplySnapshot(PublicServerSnapshotInfo snapshot, PublicServerInfo publicServer)
        {            
            CimSession session = GetCimSession(publicServer.HostName);
            CimInstance ParamSnapshot = session.QueryInstances(@"root\virtualization\v2", "WQL", "SELECT * From CIM_VirtualSystemSettingData WHERE ConfigurationID='" + snapshot.SnapshotID + "'").FirstOrDefault();

            CimMethodParametersCollection cimMethodParameters = new CimMethodParametersCollection();
            cimMethodParameters.Add(CimMethodParameter.Create("Snapshot", ParamSnapshot,CimType.Reference, CimFlags.In));

            CimMethodResult result = session.InvokeMethod(@"root\virtualization\v2", "Msvm_VirtualSystemSnapshotService", "ApplySnapshot", cimMethodParameters);
        }

当我想要启动和关闭虚拟机时，我已经有一些类似的代码并且它可以工作。

我的启动和停止虚拟机的代码：（这个工作正常）

public async Task RequestStateChange(PublicServerInfo publicServer, string action)
        {
            CimSession session = GetCimSession(publicServer.HostName);
            CimInstance vm = session.QueryInstances(@"root\virtualization\v2", "WQL", "SELECT * FROM Msvm_ComputerSystem WHERE Name='" + publicServer.MachineID + "'").FirstOrDefault();
            CimMethodParametersCollection parameters = new CimMethodParametersCollection();
            if (action.ToLower() == "start")
            {
                parameters.Add(CimMethodParameter.Create("RequestedState", (UInt16)2, CimFlags.In));
            }
            else if (action.ToLower() == "shutdown")
            {
                parameters.Add(CimMethodParameter.Create("RequestedState", (UInt16)4, CimFlags.In));
            }

            CimMethodResult result = session.InvokeMethod(@"root\virtualization\v2", vm, "RequestStateChange", parameters);
        }

Link 到 RequestsStateChange：https://docs.microsoft.com/en-us/windows/win32/hyperv_v2/requeststatechange-msvm-computersystem

感谢您的每一个回答

Answer 1

我终于找到了解决方案：

public async Task ApplySnapshot(PublicServerSnapshotInfo snapshot, PublicServerInfo publicServer)
        {            
            CimSession session = GetCimSession(publicServer.HostName);
            CimInstance ParamSnapshot = session.QueryInstances(hvNamespace, "WQL", "SELECT * From CIM_VirtualSystemSettingData WHERE ConfigurationID='" + snapshot.SnapshotID + "'").FirstOrDefault();
            var SnapshotService = session.EnumerateInstances(hvNamespace, "Msvm_VirtualSystemSnapshotService").First();

            CimMethodParametersCollection cimMethodParameters = new CimMethodParametersCollection {
                CimMethodParameter.Create("Snapshot", ParamSnapshot, CimType.Reference, CimFlags.In)
            };

            CimMethodResult result = session.InvokeMethod(hvNamespace, SnapshotService, "ApplySnapshot", cimMethodParameters);

        }

这对我有用。

HyperV WMI 在 c# 中应用快照

HyperV WMI Apply Snapshot in c#

c#

wmi

hyper-v

snapshot