From 04c09ac62f21f59f9db68fedc5ca78df27030d9f Mon Sep 17 00:00:00 2001
From: John Spray <john.spray@redhat.com>
Date: Tue, 29 Sep 2015 22:45:03 +0100
Subject: [PATCH] mds: fix SnapServer crash on deleted pool

Signed-off-by: John Spray <john.spray@redhat.com>
---
 src/mds/SnapServer.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/mds/SnapServer.cc b/src/mds/SnapServer.cc
index b5884fab7dce1..70069092c4118 100644
--- a/src/mds/SnapServer.cc
+++ b/src/mds/SnapServer.cc
@@ -265,6 +265,12 @@ void SnapServer::check_osd_map(bool force)
        ++p) {
     int id = p->first;
     const pg_pool_t *pi = osdmap->get_pg_pool(id);
+    if (pi == NULL) {
+      // The pool is gone.  So are the snapshots.
+      all_purged[id] = std::vector<snapid_t>(p->second.begin(), p->second.end());
+      continue;
+    }
+
     for (set<snapid_t>::iterator q = p->second.begin();
 	 q != p->second.end();
 	 ++q) {
-- 
2.47.3