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

[Petrut Lucian]

Public bug reported:

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.

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: qemu-img vhd vpc

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

Title:
  qemu-img fixed vhd issues

Status in QEMU:
  New

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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