librbd: check the RBD_FEATURE_LAYERING for the features of child image.

Signed-off-by: Dongsheng Yang <dongsheng.yang@easystack.cn>

diff --git a/src/librbd/internal.cc b/src/librbd/internal.cc
index 4702e8df4c2c6343576acf3e32767bb03a89aebc..f082e0839f1fc195eb91f32d07d079fd872c83d2 100644 (file)
--- a/src/librbd/internal.cc
+++ b/src/librbd/internal.cc
@@ -1513,6 +1513,11 @@ int mirror_image_disable_internal(ImageCtx *ictx, bool force,
       c_opts.set(RBD_IMAGE_OPTION_ORDER, order);
     }
 
+    if ((features & RBD_FEATURE_LAYERING) != RBD_FEATURE_LAYERING) {
+      lderr(cct) << "cloning image must support layering" << dendl;
+      return -ENOSYS;
+    }
+
     c_opts.set(RBD_IMAGE_OPTION_FEATURES, features);
     r = create(c_ioctx, c_name, size, c_opts, non_primary_global_image_id,
                primary_mirror_uuid);