Allow empty global configuration, report OSD statistics faster

mon/mon.js

@@ -253,7 +253,10 @@ class Mon
         const res = await this.etcd_call('/kv/txn', { success: [
             { requestRange: { key: b64(this.etcd_prefix+'/config/global') } }
         ] }, this.etcd_start_timeout, -1);
-        this.parse_kv(res.responses[0].response_range.kvs[0]);
+        if (res.responses[0].response_range.kvs)
+        {
+            this.parse_kv(res.responses[0].response_range.kvs[0]);
+        }
         this.check_config();
     }
 

osd_cluster.cpp

@@ -384,6 +384,7 @@ void osd_t::create_osd_state()
         {
             st_cli.load_pgs();
         }
+        report_statistics();
     });
 }
 

osd_primary_subops.cpp

@@ -295,7 +295,7 @@ void osd_t::handle_primary_subop(osd_op_t *subop, osd_op_t *cur_op)
             uint64_t version = subop->reply.sec_rw.version;
 #ifdef OSD_DEBUG
             uint64_t peer_osd = c_cli.clients.find(subop->peer_fd) != c_cli.clients.end()
-                ? c_cli.clients[subop->peer_fd].osd_num : osd_num;
+                ? c_cli.clients[subop->peer_fd]->osd_num : osd_num;
             printf("subop %lu from osd %lu: version = %lu\n", opcode, peer_osd, version);
 #endif
             if (op_data->fact_ver != 0 && op_data->fact_ver != version)