Question

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)

我收到错误： wmi.x_wmi x_wmi：意外的COM错误（-2147352567，＆＃39;发生异常。＆＃39;，（0，＆＃39; SWbemProperty＆＃39;，＆＃39;类型不匹配＆＃39;，无，0，-2147217403 ），无）

Answer 1

这是在VB.Net（而不是Python）中，但希望这会推动你朝着正确的方向发展。此示例应用最新的快照，但要应用特定快照，只需获取要应用的快照的Msvm_VirtualSystemSettingData实例，并使用该实例代替＆lt; lastSnapshot＆＃39;。

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

无法通过Msvm_VirtualSystemSnapshotService在HyperV上应用快照

1 个答案: