Doing this allows running this test with e.g. -o compat=0.10 or
-o compat=refcount_bits=1.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Test that doing a second blockdev-snapshot doesn't make the first
overlay's backing file go away.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>