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Msvm_ImageManagementService class

Hyper-V

Manages the virtual media (.vhd, .iso, or .vfd files) for a virtual machine.

The following syntax is simplified Managed Object Format (MOF) code, and it includes all of the inherited properties.

Syntax

class Msvm_ImageManagementService : CIM_Service
{
  string   Caption = "Hyper-V Image Management Service";
  string   Description = "Provides Image Management servicing for Hyper-V";
  string   ElementName = "Hyper-V Image Management Service";
  datetime InstallDate;
  string   Name = "vhdsvc";
  uint16   OperationalStatus[] = { 2 };
  string   StatusDescriptions[] = { "OK" };
  string   Status;
  uint16   HealthState = 5;
  uint16   EnabledState = 5;
  string   OtherEnabledState;
  uint16   RequestedState = 12;
  uint16   EnabledDefault = 2;
  datetime TimeOfLastStateChange;
  string   SystemCreationClassName = "Msvm_ComputerSystem";
  string   SystemName;
  string   CreationClassName = "Msvm_ImageManagementService";
  string   Name = "Hyper-V Image Management Service";
  string   PrimaryOwnerName = "Microsoft";
  string   PrimaryOwnerContact = "";
  string   StartMode;
  boolean  Started = TRUE;
};

Members

The Msvm_ImageManagementService class has these types of members:

Methods

The Msvm_ImageManagementService class has these methods.

MethodDescription
CompactVirtualHardDisk

Compacts a dynamic virtual hard disk file. Compacting is the process of unallocating unused portions of the virtual hard disk.

ConvertVirtualHardDisk

Converts the type of an existing virtual hard disk.

CreateDifferencingVirtualHardDisk

Creates a differencing .vhd file.

CreateDynamicVirtualHardDisk

Creates a dynamically expanding virtual hard disk (.vhd) file.

CreateFixedVirtualHardDisk

Creates a fixed-sized .vhd file.

CreateVirtualFloppyDisk

Creates a virtual floppy disk (.vfd) file.

ExpandVirtualHardDisk

Expands an existing virtual hard disk (.vhd) file. If the disk image is already attached to the virtual machine, it will send notifications to the running virtual machine about disk expansion.

GetVirtualHardDiskInfo

Retrieves information about the virtual hard disk files.

MergeVirtualHardDisk

Merges a differencing virtual hard disk file with its parents. This function will also update any local virtual machines which depend on the files being merged. If the user executing this function does not have permission to update the all virtual machines, then this function will fail.

Mount

Mounts a virtual disk image file in loopback mode.

ReconnectParentVirtualHardDisk

Fixes broken links between parent and child disk image files.

RequestStateChange

This method is not supported.

StartService

This method is not supported.

StopService

This method is not supported.

Unmount

Unmounts an existing virtual disk image file in loopback mode. Use the Unmount method of the Msvm_MountedStorageImage class instead.

ValidateVirtualHardDisk

Validates whether a virtual disk image can be opened in read-only mode.

 

Properties

The Msvm_ImageManagementService class has these properties.

Caption
Data type: string
Access type: Read-only

A short textual description (one-line string) of the object. This property is inherited from CIM_ManagedElement and it is always set to "Hyper-V Image Management Service".

CreationClassName
Data type: string
Access type: Read-only

The name of the class or subclass used in the creation of an instance. This property is inherited from CIM_Service and it is set to "Msvm_ImageManagementService".

Description
Data type: string
Access type: Read-only

A textual description of the object. This property is inherited from CIM_ManagedElement and it is always set to "Provides Image Management servicing for Hyper-V".

ElementName
Data type: string
Access type: Read-only

This property is inherited from CIM_ManagedElement and it is set to "Hyper-V Image Management Service".

EnabledDefault
Data type: uint16
Access type: Read-only

An administrator's default or startup configuration for the enabled state of an element. This property is inherited from CIM_EnabledLogicalElement and it is always set to 2 (Enabled).

EnabledState
Data type: uint16
Access type: Read-only

The enabled and disabled states of an element. It can also indicate the transitions between these requested states. This property is inherited from CIM_EnabledLogicalElement and it is always set to 5 (Not Applicable).

HealthState
Data type: uint16
Access type: Read-only

The current health of the element. This attribute expresses the health of this element but not necessarily that of its subcomponents. The possible values are 0 to 30, where 5 means the element is entirely healthy and 30 means the element is completely non-functional. This property is inherited from CIM_ManagedSystemElement and it is always set to 5.

InstallDate
Data type: datetime
Access type: Read-only

The date and time the virtual machine configuration was created. This property is inherited from CIM_ManagedSystemElement.

Name
Data type: string
Access type: Read-only

The label by which the object is known. This property is inherited from CIM_ManagedSystemElement and it is set to "vhdsvc".

Name
Data type: string
Access type: Read-only

The label by which the object is known. This property is inherited from CIM_Service and it is the same as the ElementName property.

OperationalStatus
Data type: uint16 array
Access type: Read-only

The current status of the object. This property is inherited from CIM_ManagedSystemElement and each array element is always set to 2 (OK).

OtherEnabledState
Data type: string
Access type: Read-only

The enabled or disabled state of the element when the EnabledState property is set to 1 (Other). This property must be set to null when EnabledState is any value other than 1. This property is inherited from CIM_EnabledLogicalElement and it is always set to NULL.

PrimaryOwnerContact
Data type: string
Access type: Read-only

A string that provides information about how the primary owner of the service can be reached (for example, phone number, email address, and so on). This property is inherited from CIM_Service and it is set to "".

PrimaryOwnerName
Data type: string
Access type: Read-only

The name of the primary owner for the service, if one is defined. The primary owner is the initial support contact for the service. This property is inherited from CIM_Service and it is set to "Microsoft".

RequestedState
Data type: uint16
Access type: Read-only

The last requested or desired state for the element. The actual state of the element is represented by EnabledState. This property is provided to compare the last requested and current enabled or disabled states. A particular instance of EnabledLogicalElement might not support RequestedStateChange. If this occurs, the value 12 (Not Applicable) is used. This property is inherited from CIM_EnabledLogicalElement and it is always set to 12 (Not Applicable).

Started
Data type: boolean
Access type: Read-only

Indicates whether the service has been started. This property is inherited from CIM_Service and it is set to TRUE.

StartMode
Data type: string
Access type: Read-only

A string value that indicates whether the service is automatically started by a system, an operating system, or is started only upon request. This property is inherited from CIM_Service and it is always set to NULL.

Status
Data type: string
Access type: Read-only

This property is inherited from CIM_ManagedSystemElement but it is not used.

StatusDescriptions
Data type: string array
Access type: Read-only

Strings that describe the various OperationalStatus array values. This property is inherited from CIM_ManagedSystemElement.

SystemCreationClassName
Data type: string
Access type: Read-only

The scoping system's creation class name. This property is inherited from CIM_Service and it is set to "Msvm_ComputerSystem".

SystemName
Data type: string
Access type: Read-only

The name of the hosting computer system. This property is inherited from CIM_Service.

TimeOfLastStateChange
Data type: datetime
Access type: Read-only

The date or time when the enabled state of the element last changed. This property is inherited from CIM_EnabledLogicalElement and it is always set to NULL.

Remarks

Access to the Msvm_ImageManagementService class might be restricted by UAC Filtering. For more information, see User Account Control and WMI.

Requirements

Minimum supported client

None supported

Minimum supported server

Windows Server 2008

End of client support

None supported

End of server support

Windows Server 2012

Namespace

\\.\Root\Virtualization

MOF

WindowsVirtualization.mof

See also

CIM_Service
Storage Classes

 

 

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