Comment 1 for bug 1847793

Hi Claus,
  Some things to try:

  a) after you quit qemu can you try qemu-img check on the qcow2 file to see if it's happy?
  b) If you repeat your test using a raw image file rather than a qcow2 is it any happier?
  c) How repeatable is it? If it's very repeatable it would be great if you could perform a git bisect to find which commit breaks it; we can walk you through it if you've not done it before.