From 4efe6aeea626e2c6d72dcb68f748e234facd186d Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@newdream.net>
Date: Thu, 10 Dec 2009 09:46:15 -0800
Subject: [PATCH] osd: respond to query on uncreated pg with empty info; do not
 create

We should never create a PG* for an uncreated pg except through the mkpg
path.
---
 src/osd/OSD.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/osd/OSD.cc b/src/osd/OSD.cc
index c6b0302c9aa62..9c23bbb6844b5 100644
--- a/src/osd/OSD.cc
+++ b/src/osd/OSD.cc
@@ -3074,6 +3074,7 @@ void OSD::_process_pg_info(epoch_t epoch, int from,
 
     // create pg!
     assert(role != 0);
+    assert(!info.dne());
     pg = _create_lock_pg(info.pgid, t);
     dout(10) << " got info on new pg, creating" << dendl;
     pg->acting.swap(acting);
@@ -3275,6 +3276,13 @@ void OSD::handle_pg_query(MOSDPGQuery *m)
       }
       assert(role > 0);
 
+      if (!history.epoch_created) {
+	dout(10) << " pg " << pgid << " not created, replying with empty info" << dendl;
+        PG::Info empty(pgid);
+        notify_list[from].push_back(empty);
+	continue;
+      }
+
       ObjectStore::Transaction t;
       pg = _create_lock_pg(pgid, t);
       pg->acting.swap( acting );
-- 
2.39.5