From: xie xingguo <xie.xingguo@zte.com.cn>
Date: Fri, 2 Feb 2018 07:24:21 +0000 (+0800)
Subject: pybind/mgr/balancer: cancel plan if distribution is already perfect
X-Git-Tag: v13.0.2~322^2
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=3da5257a675e966e9b5748dc35373fc078c61a87;p=ceph.git

pybind/mgr/balancer: cancel plan if distribution is already perfect

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>
---

diff --git a/src/pybind/mgr/balancer/module.py b/src/pybind/mgr/balancer/module.py
index a07ae8538257d..faf5cfd1c509f 100644
--- a/src/pybind/mgr/balancer/module.py
+++ b/src/pybind/mgr/balancer/module.py
@@ -679,6 +679,9 @@ class Module(MgrModule):
             if left <= 0:
                 break
         self.log.info('prepared %d/%d changes' % (total_did, max_iterations))
+        if total_did == 0:
+            return -errno.EALREADY, 'Unable to find further optimization,' \
+                                    'or distribution is already perfect'
         return 0, ''
 
     def do_crush_compat(self, plan):