> It does looks more like your case because I now have bs.in_flight == 0 > and the BlockBackend of the scsi-hd device has in_flight == 8.
yes, this looks very familiar. > Of course, this still doesn't answer why it happens, and I'm not sure if we > can tell without adding some debug code. > > I'm testing on my current block branch with Stefan's fixes on top. Note: I can trigger it with and without Stefans patches on top
