[Qemu-devel] [Bug 1367365] Re: qemu-img fixed vhd issues

[Zixuan Wang]

Yes I can reproduce this issue on Windows 10 with newest version of QEMU
(until 03/28/2018)

I've posted my way of reproduce in a new bug issue:
`#1759522 windows qemu-img create vpc/vhdx error`

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https://bugs.launchpad.net/bugs/1367365

Title:
  qemu-img fixed vhd issues

Status in QEMU:
  Incomplete

Bug description:
  qemu-img returns fixed vhd images file format to be raw.

  This happens because only the header is seeked for image signatures
  when getting the image format. In fact, unlike dynamic vhd images,
  differencing vhds don't have the footer copied in the header.

  An easy fix would be to just search the last 512B for the 'conectix'
  signature.

  Also, the fixed vhds created by qemu-img seem to be corrupted from
  Powershell POV.

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