Microsoft announced the availability of the Linux Integration Services 3.5 for Hyper-V.

You probably know that the Linux Integration Services is a set of drivers that add quite a few important features to a few popular Linux distributions when run inside a virtual Hyper-V machine.

Linux Integration Services 3.5 new features ^

Most noteworthy is the support of Linux/CentOS 5.5 and Red Hat Enterprise Linux/CentOS 5.6 and the new github repository. The open source code has been released under the GNU Public License v2. Other new features are:

  • Key-value pair: Passes information such as guest IP, FQDN, OS version, host name between guest and host
  • Hyper-V specific video device: Offers high-performance graphics and superior resolution for virtual machines
  • Dynamic memory ballooning: Enables Hyper-V host to reclaim memory from the guest until the Minimum Memory settings is reached
  • Live virtual machine backup: Provides uninterrupted backup while the VM is running
  • Virtual fibre channel: Links a virtual machine directly to SAN storage
  • VHDX resize: Expands and shrinks virtual disks that are attached to a VM

The following two features were already available in version 3.4 and are now also supported for RHEL/CentOS 5.7-5.8.

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  • Physical Address Extension (PAE) kernel support: Allows access to memory larger than 4GB on 32-bit machines
  • Static IP injection: Configures a static IP address on guest OS (important for Hyper-V Replica)

The Linux Integration Services 3.5 have already been available for download for a few weeks. Make sure that you also read the small print in Ben Armstrong’s post if you intend to use one of the new features.