Windows Hyper-V improvement for Linux virtual machines that have file systems that are larger than 2 TB

Applies to: Windows Server 2012 R2 DatacenterWindows Server 2012 R2 StandardWindows Server 2012 R2 Essentials

Symptoms


Consider the following scenario:
  • You have a Linux virtual machine that runs on a Hyper-V host in Windows 8.1, Windows Server 2012 R2, Windows 8, or Windows Server 2012.
  • You try to format a Linux file system (such as by using the mkfs command) that is larger than 2 terabytes (TB) in the virtual machine.
In this scenario, the format operation fails, and the file system is not usable.

Cause


This issue occurs because Hyper-V does not update the sense information correctly for the WRITE SAME SCSI command that is issued by the Linux virtual machine.

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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