On Thu 17 Sep 2015 03:48:04 PM CEST, Kevin Wolf <kw...@redhat.com> wrote:
> bdrv_swap() has always been an ugly hack that we would rather have > avoided. When it was introduced, we simply didn't have the > infrastructure to update pointers instead of transplanting the > contents of BDS object, so we grudgingly added bdrv_swap() as a quick > solution. Meanwhile, most of the infrastructure exists and this > series implements the final step necessary to implement the required > functionality in a less adventurous way. I didn't have the chance to debug this further, but with this series if I make a snapshot of a device with ongoing I/O I get lots of errors in the guest: Buffer I/O error on device vda1, logical block 3801549 end_request: I/O error, dev vda, sector 7604516 [...] The drive is attached with -drive if=virtio,file=foo.qcow2,node-name=bar Berto
