Am 15.12.2014 um 09:27 hat Denis V. Lunev geschrieben: > From: Roman Kagan <rka...@parallels.com> > > Add backing file support to Parallels format driver. > > That said, I think backing file operations should end up in the generic > block layer, but that's a longer story... > > Signed-off-by: Roman Kagan <rka...@parallels.com> > Signed-off-by: Denis V. Lunev <d...@openvz.org> > CC: Jeff Cody <jc...@redhat.com> > CC: Kevin Wolf <kw...@redhat.com> > CC: Stefan Hajnoczi <stefa...@redhat.com>
How are users supposed to make use of this? bs->backing_file isn't set during parallels_open(), so you generally dont' get a backing file. Users might manually add -drive backing=..., but is there really no support for storing the backing file in the image format? If so, perhaps it's better not to support backing files at all here. Kevin
