added another rs restart test

jstests/replsets/replsetrestart2.js

@@ -0,0 +1,46 @@
+// config saved on shutdown
+
+var compare_configs = function(c1, c2) {
+    assert(c1.version == c2.version, 'version same');
+    assert(c1._id == c2._id, '_id same');
+
+    printjson(c1);
+    printjson(c2);
+
+    for (var i in c1.members) {
+        assert(c2.members[i] !== undefined, 'field '+i+' exists in both configs');
+        assert(c1.members[i]._id == c2.members[i]._id, 'id is equal in both configs');
+        assert(c1.members[i].host == c2.members[i].host, 'id is equal in both configs');
+    }
+}
+
+doTest = function( signal ) {
+    var replTest = new ReplSetTest( {name: 'testSet', nodes: 3} );
+    replTest.startSet();
+
+    sleep(5000);
+
+    replTest.initiate();
+
+    sleep(5000);
+
+    var master = replTest.getMaster();
+    var config = master.getDB("local").system.replset.findOne();
+
+    replTest.stopSet( signal );
+
+    replTest.restart(0);
+    replTest.restart(1);
+    replTest.restart(2);
+
+    sleep(5000);
+
+    master = replTest.getMaster();
+    var config2 = master.getDB("local").system.replset.findOne();
+
+    compare_configs(config, config2);
+
+    replTest.stopSet( signal );
+}
+
+doTest( 15 );

jstests/replsets/sync1.js

@@ -71,7 +71,7 @@ doTest = function( signal ) {
 
         count++;
         if (count == 20) {
-            assert(false);
+            assert(false, 'sync never caught up, giving up');
             break;
         }
     } while (max1.z != max2.z);

shell/servers.js

@@ -1158,6 +1158,14 @@ ReplSetTest.prototype.awaitReplication = function() {
    });
 }
 
+/**
+ * Starts up a server.
+ *
+ * @param {int} n server number (0, 1, 2, ...)
+ * @param {object} [options]
+ * @param {boolean} [restart] If false, the data directory will be cleared 
+ * before the server starts.  Defaults to false.
+ */
 ReplSetTest.prototype.start = function( n , options , restart ){
     var lockFile = this.getPath( n ) + "/mongod.lock";
     removeFile( lockFile );
@@ -1172,6 +1180,12 @@ ReplSetTest.prototype.start = function( n , options , restart ){
     }
 }
 
+/**
+ * Restarts a db without clearing the data directory.  If the server is not
+ * stopped first, this function will not work.
+ * 
+ * @param {int} n server number (0, 1, 2, ...)
+ */
 ReplSetTest.prototype.restart = function( n , options ){
     return this.start( n , options , true );
 }