Installing Linux Integration Services v2.1 Hyper-V R2 On CentOS 5

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 for synthetic devices: Linux Integration Services supports the synthetic network controller and the synthetic storage controller 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 host.

  • Integrated Shutdown: Virtual machines running Linux can be shut down from either Hyper-V Manager or System Center Virtual Machine Manager, using the “Shut Down” command.

  • Symmetric Multi-Processing (SMP) Support: Supported Linux distributions can use up to 4 virtual processors (VP) per virtual machine.


Hyper-v won’t start if you booted from Secondary disk on soft RAID1

You’re running a Hyper-V on a Server with 2 disks and using Windows Software RAID-1. Your primary disk fails and your windows crashes, but on the reboot you have an option to boot from a secondary “plex” disk. If you choose the secondary disk as it’s your only option to boot now, the boot configuration setting (kernel) of windows is not identical with primary disk. Hyper-V will not start because the hypervisor was not enabled in the boot configuration file. What you need to do is run this command:

bcdedit /set hypervisorlaunchtype auto


This will edit the boot config file and enable the hypervisor. You have to restart your server and don’t forget to choose the Secondary disk to boot from again.