tests: disable fast-diff feature for the krbd fsx test

The kernel does not yet support fast-diff.

Fixes: #11551
Signed-off-by: Jason Dillaman <dillaman@redhat.com>

diff --git a/src/test/librbd/fsx.cc b/src/test/librbd/fsx.cc
index 7fe7495dd893a4964d5f309240453fad71dd4244..250dbb5e7db11d86814728e98c112018366c6376 100644 (file)
--- a/src/test/librbd/fsx.cc
+++ b/src/test/librbd/fsx.cc
@@ -482,7 +482,8 @@ __librbd_clone(struct rbd_ctx *ctx, const char *src_snapname,
        uint64_t features = RBD_FEATURES_ALL;
        if (krbd) {
                features &= ~(RBD_FEATURE_EXCLUSIVE_LOCK |
-                             RBD_FEATURE_OBJECT_MAP);
+                             RBD_FEATURE_OBJECT_MAP     |
+                              RBD_FEATURE_FAST_DIFF);
        }
        ret = rbd_clone2(ioctx, ctx->name, src_snapname, ioctx,
                         dst_imagename, features, order,