Merge PR ceph#60327 into main

* refs/pull/60327/head:
	mon/MDSMonitor: send reply to beacons with `state=DNE`

Reviewed-by: Patrick Donnelly <[email protected]>

Author: batrick

src/mon/MDSMonitor.cc

@@ -758,6 +758,14 @@ bool MDSMonitor::prepare_beacon(MonOpRequestRef op)
 
     if (state == MDSMap::STATE_DNE) {
       dout(1) << __func__ << ": DNE from " << info << dendl;
+
+      /* send a beacon reply so MDSDaemon::suicide() finishes the
+         Beacon::send_and_wait() call */
+      auto beacon = make_message<MMDSBeacon>(mon.monmap->fsid,
+          m->get_global_id(), m->get_name(), get_fsmap().get_epoch(),
+          m->get_state(), m->get_seq(), CEPH_FEATURES_SUPPORTED_DEFAULT);
+      mon.send_reply(op, beacon.detach());
+
       goto evict;
     }