On Mon, 1 Sep 2014 15:19:28 +0100 "Richard W.M. Jones" <rjo...@redhat.com> wrote:
> A test case, attached. > > Note that you have to look at the output of the final qemu-img info > command. In the case where it goes wrong, the 'backing file:' and > 'backing file format:' lines disappear completely. In the case where > the bug is not reproduced, these lines are still present. > > It's 100% reproducible for me when lazy_refcounts=on, and 0% > reproducible when lazy_refcounts=off. > > BUT it only occurs if the backing file is a remote source (nbd:... in > this case), not if the backing file is a plain file. Make of that > what you will. > > Rich. > Thanks. I'll try that. -- Gregory Kurz kurzg...@fr.ibm.com gk...@linux.vnet.ibm.com Software Engineer @ IBM/Meiosys http://www.ibm.com Tel +33 (0)562 165 496 "Anarchy is about taking complete responsibility for yourself." Alan Moore.