1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/*
test durability
*/
var debugging = false;
var testname = "manyRestarts";
var step = 1;
var conn = null;
function checkNoJournalFiles(path, pass) {
var files = listFiles(path);
if (files.some(function(f) {
return f.name.indexOf("prealloc") < 0;
})) {
if (pass == null) {
// wait a bit longer for mongod to potentially finish if it is still running.
sleep(10000);
return checkNoJournalFiles(path, 1);
}
print("\n\n\n");
print("FAIL path:" + path);
print("unexpected files:");
printjson(files);
assert(false, "FAIL a journal/lsn file is present which is unexpected");
}
}
function runDiff(a, b) {
function reSlash(s) {
var x = s;
if (_isWindows()) {
while (1) {
var y = x.replace('/', '\\');
if (y == x)
break;
x = y;
}
}
return x;
}
a = reSlash(a);
b = reSlash(b);
print("diff " + a + " " + b);
return run("diff", a, b);
}
function log(str) {
print();
if (str)
print(testname + " step " + step++ + " " + str);
else
print(testname + " step " + step++);
}
// if you do inserts here, you will want to set _id. otherwise they won't match on different
// runs so we can't do a binary diff of the resulting files to check they are consistent.
function work() {
log("work");
var d = conn.getDB("test");
d.foo.insert({_id: 3, x: 22});
d.foo.insert({_id: 4, x: 22});
d.a.insert({_id: 3, x: 22, y: [1, 2, 3]});
d.a.insert({_id: 4, x: 22, y: [1, 2, 3]});
d.a.update({_id: 4}, {$inc: {x: 1}});
// try building an index. however, be careful as object id's in system.indexes would vary, so
// we do it manually:
d.system.indexes.insert({_id: 99, ns: "test.a", key: {x: 1}, name: "x_1"});
log("endwork");
return d;
}
function addRows() {
var rand = Random.randInt(10000);
log("add rows " + rand);
var d = conn.getDB("test");
for (var j = 0; j < rand; ++j) {
d.rows.insert({a: 1, b: "blah"});
}
return rand;
}
function verify() {
log("verify");
var d = conn.getDB("test");
assert.eq(d.foo.count(), 2, "collection count is wrong");
assert.eq(d.a.count(), 2, "collection count is wrong");
}
function verifyRows(nrows) {
log("verify rows " + nrows);
var d = conn.getDB("test");
assert.eq(d.rows.count(), nrows, "collection count is wrong");
}
if (debugging) {
// mongod already running in debugger
conn = db.getMongo();
work();
sleep(30000);
quit();
}
log();
// directories
var path1 = MongoRunner.dataPath + testname + "nodur";
var path2 = MongoRunner.dataPath + testname + "dur";
// non-durable version
log("starting first mongod");
conn = MongoRunner.runMongod({dbpath: path1, nojournal: "", smallfiles: ""});
work();
MongoRunner.stopMongod(conn);
// hail mary for windows
// Sat Jun 11 14:07:57 Error: boost::filesystem::create_directory: Access is denied:
// "\data\db\manyRestartsdur" (anon):1
sleep(1000);
log("starting second mongod");
conn = MongoRunner.runMongod({dbpath: path2, journal: "", smallfiles: "", journalOptions: 8});
work();
// wait for group commit.
printjson(conn.getDB('admin').runCommand({getlasterror: 1, fsync: 1}));
MongoRunner.stopMongod(conn);
sleep(5000);
for (var i = 0; i < 3; ++i) {
// durable version
log("restarting second mongod");
conn = MongoRunner.runMongod({
restart: true,
cleanData: false,
dbpath: path2,
journal: "",
smallfiles: "",
journalOptions: 8
});
// wait for group commit.
printjson(conn.getDB('admin').runCommand({getlasterror: 1, fsync: 1}));
verify();
// kill the process hard
log("hard kill");
MongoRunner.stopMongod(conn, /*signal*/ 9);
sleep(5000);
}
// journal file should be present, and non-empty as we killed hard
// restart and recover
log("restart");
conn = MongoRunner.runMongod({
restart: true,
cleanData: false,
dbpath: path2,
journal: "",
smallfiles: "",
journalOptions: 8
});
log("verify");
verify();
log("stop");
MongoRunner.stopMongod(conn);
sleep(5000);
// at this point, after clean shutdown, there should be no journal files
log("check no journal files");
checkNoJournalFiles(path2 + "/journal");
log("check data matches ns");
var diff = runDiff(path1 + "/test.ns", path2 + "/test.ns");
assert(diff == "", "error test.ns files differ");
log("check data matches .0");
var diff = runDiff(path1 + "/test.0", path2 + "/test.0");
assert(diff == "", "error test.0 files differ");
log("check data matches done");
Random.setRandomSeed();
var nrows = 0;
for (var i = 0; i < 5; ++i) {
// durable version
log("restarting second mongod");
conn = MongoRunner.runMongod({
restart: true,
cleanData: false,
dbpath: path2,
journal: "",
smallfiles: "",
journalOptions: 8
});
nrows += addRows();
// wait for group commit.
printjson(conn.getDB('admin').runCommand({getlasterror: 1, fsync: 1}));
verifyRows(nrows);
// kill the process hard
log("hard kill");
MongoRunner.stopMongod(conn, /*signal*/ 9);
sleep(5000);
}
print(testname + " SUCCESS");
|
