So if you are running Windows Server 2008 R2 SP1 virtual machines or later don’t forget to update your Hyper-V Integration Services on those virtual machines. If you are running Windows Server 2012 virtual machines you can normally patch those via Windows Update or WSUS to get the latest Hyper-V integration services.
In System Center 2012 Virtual Machine Manager was a cool new feature which allowed you to show the installed version of the Hyper-V Integration Services. In the normal Hyper-V Manager or Cluster Manager it was not possible to show the installed version. In Windows Server 2012 Hyper-V this has not changed, there is no GUI option to show the installed version, but there is Windows PowerShell. With the simple Get-VM cmdlet you can show the version of the Hyper-V Integration Services.
Linux Integration Services Version 3.3 for Microsoft Hyper-V Features
When installed on a virtual machine that is running a supported Linux operating system, Linux Integration Services for Hyper-V provides the following functionality:
Driver support: Linux Integration Services supports the network controller, and the IDE and SCSI storage controllers that were developed specifically for Hyper-V.
Fastpath boot support for Hyper-V: Boot devices now take advantage of the block Virtualization Service Client (VSC) to provide enhanced performance.
Timesync: The clock inside the virtual machine will remain synchronized with the clock on the virtualization server with the help of the pluggable time source device.
Integrated shutdown: Virtual machines running Linux can be shut down from either Hyper-V Manager or System Center Virtual Machine Manager by using the “Shut Down” command.
Symmetric multiprocessing (SMP) support: Supported Linux distributions can use up to 4 virtual processors per virtual machine. SMP support is not available for 32-bit Linux guest operating systems running on Windows Server 2008 Hyper-V or Microsoft Hyper-V Server 2008.
Heartbeat: Allows the virtualization server to detect whether the virtual machine is running and responsive.
KVP (Key-Value Pair) Exchange: Information about the running Linux virtual machine can be obtained by using the Key-Value Pair Exchange functionality on the Windows Server 2008 virtualization server.
Integrated mouse support: The cursor is no longer bound to the VMConnect window when used with the Linux Graphical user interface.
Supported Virtualization Server Operating Systems
This version of Linux Integration Services supports the following versions of Hyper-V:
Windows Server® 2008 Standard, Windows Server 2008 Enterprise, and Windows Server 2008 Datacenter (64-bit versions only)
Microsoft® Hyper-V Server 2008
Windows Server 2008 R2 Standard, Windows Server 2008 R2 Enterprise, and Windows Server 2008 R2 Datacenter
Microsoft Hyper-V Server 2008 R2
Windows 8 Release Preview (NEW)
Microsoft Hyper-V Server 2012 (NEW)
Windows Server 2012 (NEW)
Supported Guest Operating Systems
This version of Linux Integration Services supports the following guest operating systems and virtual CPU (vCPU) configurations:
Red Hat Enterprise Linux 6.0-6.2 x86 and x64 (Up to 4 vCPU)
CentOS 6.0-6.2 x86 and x64 (Up to 4 vCPU)
Red Hat Enterprise Linux 6.0-6.2 x86 and x64 (Up to 32 vCPU when used on a Windows 8 Release Preview or Windows Server 2012 host)
CentOS 6.0-6.2 x86 and x64 (Up to 32 vCPU when used on a Windows 8 Release Preview or Windows Server 2012 host)
Since we have installed our Microsoft Hyper-V Cluster on the Cisco UCS, Microsoft released some patches for Hyper-V, Windows and Clustering.
There are two really important Updates which I would recommend for Hyper-V Clusters.
The first is Service Pack 1 for Windows Server 2008 R2 and Hyper-V Server 2008 R2. Service Pack 1 brings a lot of Hotfixes for Hyper-V, Failover Cluster Feature and other Microsoft Server features. And it brings also a two new features called Dynamic Memory and RemoteFX.
The second one is a hotfix for Servers with Intel Westmere or Sandy Bridge and has a large amount of physical memory. Most of the Cisco UCS Blades will meet this configuration. You can get more information on this Hyper-V hotfix here.
This two updates will bring you a much better experience with your Hyper-V Cluster. It will improve performance, stability and it will add new features.
If you have time sync problems with Hyper-V Guest Systems there is a simple solution for this.
Time between Server and Active Directory Domain Controller is not correct
Can’t login because of this
Can’t add AD Users to local groups
To solve this problem you have to disable Time Synchronization in the Hyper-V Integration Services for each guest. Then restart the Windows Time serviceon the guest. The guests will then correctly synchronize with a domain controller.