From: Dan Mick <dan.mick@inktank.com>
Date: Thu, 14 Mar 2013 18:02:12 +0000 (-0700)
Subject: mon: refuse "mon remove" if only one mon left
X-Git-Tag: v0.60~75^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F108%2Fhead;p=ceph.git

mon: refuse "mon remove" if only one mon left

Fixes: #4439
Signed-off-by: Dan Mick <dan.mick@inktank.com>
---

diff --git a/src/mon/MonmapMonitor.cc b/src/mon/MonmapMonitor.cc
index 1a86a0199ae2..13b50f82682e 100644
--- a/src/mon/MonmapMonitor.cc
+++ b/src/mon/MonmapMonitor.cc
@@ -404,6 +404,11 @@ bool MonmapMonitor::prepare_command(MMonCommand *m)
         goto out;
       }
 
+      if (pending_map.size() == 1) {
+	err = -EINVAL;
+	ss << "error: refusing removal of last monitor " << name;
+	goto out;
+      }
       entity_addr_t addr = pending_map.get_addr(name);
       pending_map.remove(name);
       pending_map.last_changed = ceph_clock_now(g_ceph_context);