From 30fa7fbbc08bf521204ce838768fdb552b73c2dd Mon Sep 17 00:00:00 2001
From: zhengyin <zhengyin@cmss.chinamobile.com>
Date: Mon, 11 Jun 2018 16:42:47 +0800
Subject: [PATCH] rbd/resize: if new size is equal to original size, raise
 error

Signed-off-by: Zheng Yin zhengyin@cmss.chinamobile.com
---
 src/tools/rbd/action/Resize.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/tools/rbd/action/Resize.cc b/src/tools/rbd/action/Resize.cc
index aed5fdad1375..fdb3fcf0ac70 100644
--- a/src/tools/rbd/action/Resize.cc
+++ b/src/tools/rbd/action/Resize.cc
@@ -71,6 +71,11 @@ int execute(const po::variables_map &vm,
     return r;
   }
 
+  if (info.size == size) {
+    std::cerr << "rbd: new size is equal to original size " << std::endl;
+    return -EINVAL;
+  }
+
   if (info.size > size && !vm["allow-shrink"].as<bool>()) {
     r = -EINVAL;
   } else {
-- 
2.47.3