From: Sage Weil <sage@redhat.com>
Date: Fri, 16 Jan 2015 21:32:50 +0000 (-0800)
Subject: mon/OSDMonitor: don't -nan for variance when no osds
X-Git-Tag: v0.93~227^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=169d6805ffd549cfe5e00a15a4ae10f33ebdf97d;p=ceph.git

mon/OSDMonitor: don't -nan for variance when no osds

Signed-off-by: Sage Weil <sage@redhat.com>
---

diff --git a/src/mon/OSDMonitor.cc b/src/mon/OSDMonitor.cc
index 507ae1485db..003fa57ec3e 100644
--- a/src/mon/OSDMonitor.cc
+++ b/src/mon/OSDMonitor.cc
@@ -641,7 +641,9 @@ protected:
     int64_t kb = 0, kb_used = 0, kb_avail = 0;
     double util = get_bucket_utilization(qi.id, kb, kb_used, kb_avail) ?
       100.0 * (double)kb_used / (double)kb : 0;
-    double var = util / average_util;
+    double var = 1.0;
+    if (average_util)
+      var = util / average_util;
 
     dump_item(qi, reweight, kb, kb_used, kb_avail, util, var, f);