无法通过 Msvm_VirtualSystemMAnagementService 在 Hyper V 上应用快照答案

【问题标题】：Cant apply snapshot on HyperV by Msvm_VirtualSystemSnapshotService无法通过 Msvm_VirtualSystemMAnagementService 在 Hyper V 上应用快照
【发布时间】：2017-04-19 09:55:19
【问题描述】：

然后我试试这个：

wmiServerConnection = wmi.WMI(namespace=r'root\virtualization\v2')
vmSnapManagement = wmiServerConnection.Msvm_VirtualSystemSnapshotService()[0]
vmSystem = wmiServerConnection.Msvm_ComputerSystem(ElementName=r'wmname')[0]
vmObjects = vmSystem.associators(wmi_result_class='Msvm_VirtualSystemSettingData')

for singleVmObject in vmObjects:
    if singleVmObject.ElementName == r'snapshotname':
        job = vmSnapManagement.ApplySnapshot(singleVmObject)

我得到错误： wmi.x_wmi x_wmi：意外的 COM 错误（-2147352567，'发生异常'，（0，'SWbemProperty'，'类型不匹配'，无，0，-2147217403），无）

【问题讨论】：

标签： wmi hyper-v python-3.6

【解决方案1】：

这是在 VB.Net（不是 Python）中，但希望这能将您推向正确的方向。此示例应用最近的快照，但要应用特定快照，只需获取您希望应用的快照的 Msvm_VirtualSystemSettingData 实例，并使用该实例代替“lastSnapshot”。

Imports System.Management

Public Class VirtualSystemSnapshot
    Public Shared Function Revert(vmElementName As String)
        Dim scope As New ManagementScope("\\" & ServerName & "\Root\Virtualization\V2", Options)
        Using virtualMachine As ManagementObject = WmiUtilities.GetVirtualMachine(vmElementName, scope)
            Using virtualSystemSettingData As ManagementObject = WmiUtilities.GetVirtualSystemSettingData(scope, virtualMachine)
                Using virtualSystemSnapshotService As ManagementObject = WmiUtilities.GetVirtualSystemSnapshotService(scope)
                    Using lastSnapshot As ManagementObject = WmiUtilities.GetFirstObjectFromCollection(
                            virtualSystemSettingData.GetRelated("Msvm_VirtualSystemSettingData", "Msvm_ParentChildSettingData", Nothing, Nothing, Nothing, Nothing, False, Nothing))
                        Using inParams As ManagementBaseObject = virtualSystemSnapshotService.GetMethodParameters("ApplySnapshot")
                            inParams("Snapshot") = lastSnapshot

                            ' In order to apply a snapshot, the virtual machine must first be saved
                            RequestStateChange.Main(vm, RequestedState.Save)

                            Using outParams As ManagementBaseObject = virtualSystemSnapshotService.InvokeMethod("ApplySnapshot", inParams, Nothing)
                                WmiUtilities.ValidateOutput(outParams, scope)

                                ' Now that the snapshot has been applied, start the VM back up
                                RequestStateChange.Main(vm, RequestedState.Start)
                            End Using
                        End Using
                    End Using
                End Using
            End Using
        End Using
    End Function
End Class

【讨论】：