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[Bug 1231911] Re: VHDX snapshot from Hyper-V driver is bigger than original instance

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Alan Pevec <1231911@xxxxxxxxxxxxxxxxxx>
Date: Mon, 22 Sep 2014 13:08:12 -0000
Reply-to: Bug 1231911 <1231911@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Also affects: nova/havana
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1231911

Title:
  VHDX snapshot from Hyper-V driver is bigger than original instance

Status in OpenStack Compute (Nova):
  Fix Released
Status in OpenStack Compute (nova) havana series:
  New

Bug description:
  WIth the introduction of support for the VHDX in the Hyper-V driver,
  the following bug related to the VHD format must be taken into
  consideration for VHDX as well:
  https://bugs.launchpad.net/nova/+bug/1177927

  The file structure of a VHDX file differs radically from VHD, so it
  make sense to file a separate bug.

  VHDX format specs: http://www.microsoft.com/en-
  us/download/details.aspx?id=34750

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