Using libguestfs to read Hyper-V VHDX disk images

(Thanks to Jeff Cody for both writing the code and helping me to get it to work).

New in qemu 1.5 is read-only support for Hyper-V‘s native disk format, vhdx. You can now open vhdx files in libguestfs just like any other:

$ guestfish --ro --format=vhdx -a /tmp/f18x64.vhdx -i

Welcome to guestfish, the guest filesystem shell for
editing virtual machine filesystems and disk images.

Type: 'help' for help on commands
      'man' to read the manual
      'quit' to quit the shell

Operating system: Fedora release 18 (Spherical Cow)
/dev/fedora/root mounted on /
/dev/sda1 mounted on /boot

Notes:

  1. As stated above, you will need the very latest qemu for this to work.
  2. You must specify --format=vhdx at the moment because of a missing feature in libvirt.
  3. You must specify --ro because writing is not supported (by the qemu driver).
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