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// Change a getLastErrorMode from 2 to 3 servers
var host = getHostName();
var replTest = new ReplSetTest( {name: "rstag", nodes: 3, startPort: 31000} );
var nodes = replTest.startSet();
var ports = replTest.ports;
var conf = {_id : "rstag", version: 1, members : [
{_id : 0, host : host+":"+ports[0], tags : {"backup" : "A"}},
{_id : 1, host : host+":"+ports[1], tags : {"backup" : "B"}},
{_id : 2, host : host+":"+ports[2], tags : {"backup" : "C"}} ],
settings : {getLastErrorModes : {
backedUp : {backup : 2} }} };
replTest.initiate( conf );
replTest.awaitReplication();
master = replTest.getMaster();
var db = master.getDB("test");
db.foo.insert( {x:1} );
var result = db.runCommand( {getLastError:1, w:"backedUp", wtimeout:20000} );
assert.eq (result.err, null);
conf.version = 2;
conf.settings.getLastErrorModes.backedUp.backup = 3;
master.getDB("admin").runCommand( {replSetReconfig: conf} );
replTest.awaitReplication();
master = replTest.getMaster();
var db = master.getDB("test");
db.foo.insert( {x:2} );
var result = db.runCommand( {getLastError:1, w:"backedUp", wtimeout:20000} );
assert.eq (result.err, null);
conf.version = 3;
conf.members[0].priorty = 3;
conf.members[2].priorty = 0;
master.getDB("admin").runCommand( {replSetReconfig: conf} );
master = replTest.getMaster();
var db = master.getDB("test");
db.foo.insert( {x:3} );
var result = db.runCommand( {getLastError:1, w:"backedUp", wtimeout:20000} );
assert.eq (result.err, null);
replTest.stopSet();
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