Integration Services

 

Updated: August 4, 2014

Applies To: Windows Server 2012 R2, Windows Server 2012

Hyper-V integration services, are a bundled set of software which, when installed in the virtual machine improves integration between the host server and the virtual machine. Integration services come pre-installed in most supported guest operating systems.

The following topics list the guest operating systems supported in virtual machines running in Hyper-V on Windows Server 2012 and Windows Server 2012 R2 for use as guest operating systems:

System_CAPS_ICON_note.jpg Note

After the integration services software package has been installed in the virtual machine, the following integration services can be presented to the virtual machine. The operating system running in the virtual machine must support the selected services.

The following is the list of the integration services that can be configure in the Integration Services settings page for each virtual machine. By default all of the services are enabled except for Guest services.

Service nameServer settingsGuest operating system
Default virtual machine settingSupported on Hyper-V running on Windows Server versionWindows service nameLinux driver / daemon name
Operating system shutdownEnabledWindows Server 2012 and Windows Server 2012 R2Hyper-V Guest Shutdown Servicehv_utils
Time synchronizationEnabledWindows Server 2012 and Windows Server 2012 R2Hyper-V Time Synchronization Servicehv_utils
Data ExchangeEnabledWindows Server 2012 and Windows Server 2012 R2Hyper-V Data Exchange Servicehv_utils and hv_kvp_daemon
HeartbeatEnabledWindows Server 2012 and Windows Server 2012 R2Hyper-V Heartbeat Servicehv_utils
Backup (volume snapshot)EnabledWindows Server 2012 and Windows Server 2012 R2Hyper-V Volume Shadow Copy Requestorhv_utils and hv_vss_daemon
Guest servicesNot enabledWindows Server 2012 R2Hyper-V Guest Services Interfacehv_utils and hv_fcopy_daemon
System_CAPS_ICON_tip.jpg Tip

On Linux virtual machines you can check to see if the integration services driver and daemons are running by running the following commands.

  • Run the following command in your Linux guest operating system to see if the hv_utils driver is loaded.
```  
lsmod|grep hv_utils  
```  

  • Run the following command in your Linux guest operating system to see if the required daemons are running.

    ps –eaf|grep hv  
    
    

Operating system shutdown

The operating system shutdown service provides a mechanism to shut down the operating system of a virtual machine from the management interfaces on the host or management computer. This allows the Hyper-V administrator the ability to initiate an orderly shutdown of the virtual machines without having to log into the virtual machine. The virtual machine will attempt to close open processes and write to disk any data in memory before shutting down the virtual machine, in the same way if the administrator had selected Shutdown from within the virtual machine.

You can shutdown virtual machines from the Hyper-V Manager console or via the Stop-VM PowerShell cmdlet. For more information about Stop-VM cmdlet, see Stop-VM.

Time synchronization

The time synchronization service provides the ability to synchronize your virtual machines’ time with the time from the host. Just as time is critical to physical servers it is critical to virtual machines.

For additional information about time synchronization and in what scenarios you should disable the service, see Time Synchronization.

Data Exchange

The data exchange service, also known as key-value pairs (KVP), allows for the sharing of information between the host and virtual machine. General information about the virtual machine and host is automatically generated and stored in the registry for virtual machines running Windows and in files for virtual machines running Linux. Additionally there is a registry key and file where information can be created manually that can be shared between the host and the virtual machine. For example a service running in a virtual machine could write to this location when a specific event has occurred that requires the Hyper-V administrator to perform a specific action.

Access to the data from the host is via WMI scripts only.

For additional information about data exchange, see Data Exchange

Heartbeat

The heartbeat service monitors the state of running virtual machines by reporting a heartbeat at regular intervals. This service helps you identify running virtual machines that might have stopped responding. You can check the heartbeat status of a virtual machine on the Summary tab of the Virtual Machines details page or you can use the Get-VMIntegrationSerivce cmdlet. For additional information about the Get-VMIntegrationService cmdlet, see Get-VMIntegrationService.

Backup (volume snapshot)

The backup service enables consistent backup of the virtual machines from backup software running on the host. The backup service allows for the virtual machine to be backed up while it is running without any interruption to the virtual machine or the services running in the virtual machine.

For more information about backing up your virtual machines, see Back up and restore.

Guest services

The guest service allows the Hyper-V administrator to copy files to a running virtual machine without using a network connection. Beforehand the only way to copy files to the virtual machine was for both the virtual machine and the host be connected to same network and then either use file services to copy file or to create a remote desktop session to the virtual machine and copy files via RDS session.

System_CAPS_ICON_important.jpg Important

The Hyper-V Guest Service Interface service enters a running state when the Guest services service is selected on the Integration Services property page of the virtual machine.

To disable this feature in a virtual machine running Windows, set the Hyper-V Guest Service Interface service startup type to Disabled inside the virtual machine.

To disable this feature in a virtual machine running Linux, stop and disable the hv_fcopy_daemon daemon. Consult your Linux distribution’s documentation for the steps to stop or disable a daemon process.

To copy a file to a virtual machine you need to use the Copy-VMFile PowerShell cmdlet. For additional information about the Copy-VMFile Windows PowerShell cmdlet, see Copy-VMFile.

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