From 684928883f5eaaec99a8cc8c43e81fae69f9fbfa Mon Sep 17 00:00:00 2001
From: Kefu Chai <kchai@redhat.com>
Date: Wed, 16 Sep 2015 15:08:17 +0800
Subject: [PATCH] mon/PGMap: calc min_last_epoch_clean when decode

Fixes: #13112
Signed-off-by: Kefu Chai <kchai@redhat.com>
(cherry picked from commit d0ac68bf1785b330f3202d924c2203ace9393fe6)
---
 src/mon/PGMap.cc      |  2 +-
 src/test/mon/PGMap.cc | 35 ++++++++++++++++++++++++++++++++++-
 2 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/src/mon/PGMap.cc b/src/mon/PGMap.cc
index e60ed6ae29d..fb63d9ad1ce 100644
--- a/src/mon/PGMap.cc
+++ b/src/mon/PGMap.cc
@@ -373,7 +373,7 @@ void PGMap::calc_stats()
 
   redo_full_sets();
 
-  calc_min_last_epoch_clean();
+  min_last_epoch_clean = calc_min_last_epoch_clean();
 }
 
 void PGMap::update_pg(pg_t pgid, bufferlist& bl)
diff --git a/src/test/mon/PGMap.cc b/src/test/mon/PGMap.cc
index 9f7a6b2d0b1..f13fa893666 100644
--- a/src/test/mon/PGMap.cc
+++ b/src/test/mon/PGMap.cc
@@ -81,7 +81,40 @@ TEST(pgmap, min_last_epoch_clean)
 
 }
 
-
+TEST(pgmap, calc_stats)
+{
+  bufferlist bl;
+  {
+    PGMap pg_map;
+    PGMap::Incremental inc;
+    osd_stat_t os;
+    pg_stat_t ps;
+
+    ps.last_epoch_clean = 999;
+    inc.pg_stat_updates[pg_t(9,9)] = ps;
+    inc.version = 1;
+    inc.update_stat(0, 123, os);
+    pg_map.apply_incremental(g_ceph_context, inc);
+    ASSERT_EQ(123u, pg_map.get_min_last_epoch_clean());
+    pg_map.encode(bl);
+  }
+  {
+    PGMap pg_map;
+    PGMap::Incremental inc;
+    osd_stat_t os;
+    pg_stat_t ps;
+
+    ps.last_epoch_clean = 999;
+    inc.pg_stat_updates[pg_t(9,9)] = ps;
+    inc.version = 1;
+    inc.update_stat(0, 321, os);
+    pg_map.apply_incremental(g_ceph_context, inc);
+    ASSERT_EQ(321u, pg_map.get_min_last_epoch_clean());
+    bufferlist::iterator p = bl.begin();
+    ::decode(pg_map, p);
+    ASSERT_EQ(123u, pg_map.get_min_last_epoch_clean());
+  }
+}
 
 int main(int argc, char **argv) {
   vector<const char*> args;
-- 
2.47.3