From ed70b5ae1faba8271098ea4287b09f70be39cd00 Mon Sep 17 00:00:00 2001
From: Greg Farnum <gregf@hq.newdream.net>
Date: Thu, 8 Oct 2009 16:28:39 -0700
Subject: [PATCH] mdsmap: add a last_changed utime_t data member.

---
 src/mon/MonMap.h         | 4 ++++
 src/mon/MonmapMonitor.cc | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/src/mon/MonMap.h b/src/mon/MonMap.h
index 9313d9f0ec3..24f4ef0f17b 100644
--- a/src/mon/MonMap.h
+++ b/src/mon/MonMap.h
@@ -26,11 +26,13 @@ class MonMap {
   epoch_t epoch;       // what epoch/version of the monmap
   ceph_fsid_t fsid;
   vector<entity_inst_t> mon_inst;
+  utime_t last_changed;
 
   int       last_mon;    // last mon i talked to
 
   MonMap() : epoch(0), last_mon(-1) {
     memset(&fsid, 0, sizeof(fsid));
+    last_changed = g_clock.now();
   }
 
   ceph_fsid_t& get_fsid() { return fsid; }
@@ -89,6 +91,7 @@ class MonMap {
     ::encode_raw(fsid, blist);
     ::encode(epoch, blist);
     ::encode(mon_inst, blist);
+    ::encode(last_changed, blist);
   }  
   void decode(bufferlist& blist) {
     bufferlist::iterator p = blist.begin();
@@ -100,6 +103,7 @@ class MonMap {
     ::decode_raw(fsid, p);
     ::decode(epoch, p);
     ::decode(mon_inst, p);
+    ::decode(last_changed, p);
   }
 
 
diff --git a/src/mon/MonmapMonitor.cc b/src/mon/MonmapMonitor.cc
index a231ce08077..0c7d0caca96 100644
--- a/src/mon/MonmapMonitor.cc
+++ b/src/mon/MonmapMonitor.cc
@@ -64,6 +64,7 @@ void MonmapMonitor::create_pending()
 {
   pending_map = *mon->monmap;
   pending_map.epoch++;
+  pending_map.last_changed = g_clock.now();
   dout(10) << "create_pending monmap epoch " << pending_map.epoch << dendl;
 }
 
@@ -84,6 +85,7 @@ bool MonmapMonitor::prepare_update(PaxosServiceMessage *message)
 {
   MMonAdd *m = (MMonAdd *) message;
   pending_map.add(m->address);
+  pending_map.last_changed = g_clock.now();
   return true;
 }