From: Dongsheng Yang <dongsheng.yang@easystack.cn>
Date: Tue, 21 Jun 2016 09:17:29 +0000 (-0400)
Subject: librbd: check the RBD_FEATURE_LAYERING for the features of child image.
X-Git-Tag: ses5-milestone5~281^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=cfae775889cc7c593633002d07b02172ea107b23;p=ceph.git

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 4702e8df4c2c..f082e0839f1f 100644
--- 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);