On 11/19/2013 08:37 AM, Kevin Wolf wrote: > In the case of snapshot=on, don't rely on the backing file path in the > temporary image any more, but override the backing file with the given > set of options. This way, block drivers that don't use a file name can > be accessed with snapshot=on, for example: > > -drive file.driver=nbd,file.host=localhost,snapshot=on > > Which becomes internally something like: > > > file.filename=/tmp/vl.AWQZCu,backing.file.driver=nbd,backing.file.host=localhost
[libvirt isn't using snapshot=on, but that doesn't affect the utility of this patch] > > Signed-off-by: Kevin Wolf <kw...@redhat.com> > --- > block.c | 49 +++++++++++++++++++++++-------------------------- > 1 file changed, 23 insertions(+), 26 deletions(-) > Reviewed-by: Eric Blake <ebl...@redhat.com> -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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