From 1329a09eccb763b8e1166ec8567abfe8c3015350 Mon Sep 17 00:00:00 2001
From: Jason Dillaman <dillaman@redhat.com>
Date: Wed, 6 Jan 2016 14:55:02 -0500
Subject: [PATCH] librbd: disable write_full optimization if image has parent

Fixes: #14241
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
---
 src/librbd/AioObjectRequest.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/librbd/AioObjectRequest.cc b/src/librbd/AioObjectRequest.cc
index 5b3d616561374..e7750cb854dcc 100644
--- a/src/librbd/AioObjectRequest.cc
+++ b/src/librbd/AioObjectRequest.cc
@@ -549,7 +549,7 @@ namespace librbd {
 			   << m_object_off << "~" << m_object_len
                            << " object exist " << m_object_exist
 			   << " write_full " << write_full << dendl;
-    if (write_full) {
+    if (write_full && !has_parent()) {
       send_write_op(false);
     } else {
       AbstractAioObjectWrite::send_write();
-- 
2.39.5