From deb92c9d89cf5c9f52f32ee0b16861aa7f6169c6 Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@redhat.com>
Date: Thu, 13 Dec 2018 09:14:03 -0600
Subject: [PATCH] mon/OSDMonitor: require mimic mons for
 require_osd_release=mimic

Signed-off-by: Sage Weil <sage@redhat.com>
---
 src/mon/OSDMonitor.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/mon/OSDMonitor.cc b/src/mon/OSDMonitor.cc
index 51cbf07e7b9..810feb3dbfc 100644
--- a/src/mon/OSDMonitor.cc
+++ b/src/mon/OSDMonitor.cc
@@ -10194,6 +10194,12 @@ bool OSDMonitor::prepare_command_impl(MonOpRequestRef op,
       goto reply;
     }
     if (rel == CEPH_RELEASE_MIMIC) {
+      if (!mon->monmap->get_required_features().contains_all(
+	    ceph::features::mon::FEATURE_MIMIC)) {
+	ss << "not all mons are mimic";
+	err = -EPERM;
+	goto reply;
+      }
       if ((!HAVE_FEATURE(osdmap.get_up_osd_features(), SERVER_MIMIC))
            && !sure) {
 	ss << "not all up OSDs have CEPH_FEATURE_SERVER_MIMIC feature";