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
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "test/crimson/gtest_seastar.h"
#include "crimson/common/log.h"
#include "crimson/os/seastore/cache.h"
#include "crimson/os/seastore/segment_manager/ephemeral.h"
#include "test/crimson/seastore/test_block.h"
using namespace crimson;
using namespace crimson::os;
using namespace crimson::os::seastore;
namespace {
[[maybe_unused]] seastar::logger& logger() {
return crimson::get_logger(ceph_subsys_test);
}
}
struct cache_test_t : public seastar_test_suite_t {
segment_manager::EphemeralSegmentManagerRef segment_manager;
ExtentPlacementManagerRef epm;
CacheRef cache;
paddr_t current;
journal_seq_t seq = JOURNAL_SEQ_MIN;
cache_test_t() = default;
seastar::future<paddr_t> submit_transaction(
TransactionRef t) {
auto record = cache->prepare_record(*t, JOURNAL_SEQ_NULL, JOURNAL_SEQ_NULL);
bufferlist bl;
for (auto &&block : record.extents) {
bl.append(block.bl);
}
ceph_assert((segment_off_t)bl.length() <
segment_manager->get_segment_size());
if (current.as_seg_paddr().get_segment_off() + (segment_off_t)bl.length() >
segment_manager->get_segment_size())
current = paddr_t::make_seg_paddr(
segment_id_t(
current.as_seg_paddr().get_segment_id().device_id(),
current.as_seg_paddr().get_segment_id().device_segment_id() + 1),
0);
auto prev = current;
current.as_seg_paddr().set_segment_off(
current.as_seg_paddr().get_segment_off()
+ bl.length());
return segment_manager->segment_write(
prev,
std::move(bl),
true
).safe_then(
[this, prev, t=std::move(t)]() mutable {
cache->complete_commit(*t, prev, seq /* TODO */);
return prev;
},
crimson::ct_error::all_same_way([](auto e) {
ASSERT_FALSE("failed to submit");
})
);
}
auto get_transaction() {
return cache->create_transaction(
Transaction::src_t::MUTATE, "test_cache", false);
}
template <typename T, typename... Args>
auto get_extent(Transaction &t, Args&&... args) {
return with_trans_intr(
t,
[this](auto &&... args) {
return cache->get_extent<T>(args...);
},
std::forward<Args>(args)...);
}
seastar::future<> set_up_fut() final {
segment_manager = segment_manager::create_test_ephemeral();
return segment_manager->init(
).safe_then([this] {
return segment_manager->mkfs(
segment_manager::get_ephemeral_device_config(0, 1, 0));
}).safe_then([this] {
epm.reset(new ExtentPlacementManager());
cache.reset(new Cache(*epm));
current = paddr_t::make_seg_paddr(segment_id_t(segment_manager->get_device_id(), 0), 0);
epm->test_init_no_background(segment_manager.get());
return seastar::do_with(
get_transaction(),
[this](auto &ref_t) {
cache->init();
return with_trans_intr(*ref_t, [&](auto &t) {
return cache->mkfs(t);
}).safe_then([this, &ref_t] {
return submit_transaction(std::move(ref_t)
).then([](auto p) {});
});
});
}).handle_error(
crimson::ct_error::all_same_way([](auto e) {
ASSERT_FALSE("failed to submit");
})
);
}
seastar::future<> tear_down_fut() final {
return cache->close(
).safe_then([this] {
segment_manager.reset();
epm.reset();
cache.reset();
}).handle_error(
Cache::close_ertr::assert_all{}
);
}
};
TEST_F(cache_test_t, test_addr_fixup)
{
run_async([this] {
paddr_t addr;
int csum = 0;
{
auto t = get_transaction();
auto extent = cache->alloc_new_extent<TestBlockPhysical>(
*t,
TestBlockPhysical::SIZE,
placement_hint_t::HOT,
0);
extent->set_contents('c');
csum = extent->get_crc32c();
submit_transaction(std::move(t)).get0();
addr = extent->get_paddr();
}
{
auto t = get_transaction();
auto extent = get_extent<TestBlockPhysical>(
*t,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_EQ(extent->get_paddr(), addr);
ASSERT_EQ(extent->get_crc32c(), csum);
}
});
}
TEST_F(cache_test_t, test_dirty_extent)
{
run_async([this] {
paddr_t addr;
int csum = 0;
int csum2 = 0;
{
// write out initial test block
auto t = get_transaction();
auto extent = cache->alloc_new_extent<TestBlockPhysical>(
*t,
TestBlockPhysical::SIZE,
placement_hint_t::HOT,
0);
extent->set_contents('c');
csum = extent->get_crc32c();
auto reladdr = extent->get_paddr();
ASSERT_TRUE(reladdr.is_relative());
{
// test that read with same transaction sees new block though
// uncommitted
auto extent = get_extent<TestBlockPhysical>(
*t,
reladdr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_TRUE(extent->is_clean());
ASSERT_TRUE(extent->is_pending());
ASSERT_TRUE(extent->get_paddr().is_relative());
ASSERT_EQ(extent->get_version(), 0);
ASSERT_EQ(csum, extent->get_crc32c());
}
submit_transaction(std::move(t)).get0();
addr = extent->get_paddr();
}
{
// test that consecutive reads on the same extent get the same ref
auto t = get_transaction();
auto extent = get_extent<TestBlockPhysical>(
*t,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
auto t2 = get_transaction();
auto extent2 = get_extent<TestBlockPhysical>(
*t2,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_EQ(&*extent, &*extent2);
}
{
// read back test block
auto t = get_transaction();
auto extent = get_extent<TestBlockPhysical>(
*t,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
// duplicate and reset contents
extent = cache->duplicate_for_write(*t, extent)->cast<TestBlockPhysical>();
extent->set_contents('c');
csum2 = extent->get_crc32c();
ASSERT_EQ(extent->get_paddr(), addr);
{
// test that concurrent read with fresh transaction sees old
// block
auto t2 = get_transaction();
auto extent = get_extent<TestBlockPhysical>(
*t2,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_TRUE(extent->is_clean());
ASSERT_FALSE(extent->is_pending());
ASSERT_EQ(addr, extent->get_paddr());
ASSERT_EQ(extent->get_version(), 0);
ASSERT_EQ(csum, extent->get_crc32c());
}
{
// test that read with same transaction sees new block
auto extent = get_extent<TestBlockPhysical>(
*t,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_TRUE(extent->is_dirty());
ASSERT_TRUE(extent->is_pending());
ASSERT_EQ(addr, extent->get_paddr());
ASSERT_EQ(extent->get_version(), 1);
ASSERT_EQ(csum2, extent->get_crc32c());
}
// submit transaction
submit_transaction(std::move(t)).get0();
ASSERT_TRUE(extent->is_dirty());
ASSERT_EQ(addr, extent->get_paddr());
ASSERT_EQ(extent->get_version(), 1);
ASSERT_EQ(extent->get_crc32c(), csum2);
}
{
// test that fresh transaction now sees newly dirty block
auto t = get_transaction();
auto extent = get_extent<TestBlockPhysical>(
*t,
addr,
TestBlockPhysical::SIZE).unsafe_get0();
ASSERT_TRUE(extent->is_dirty());
ASSERT_EQ(addr, extent->get_paddr());
ASSERT_EQ(extent->get_version(), 1);
ASSERT_EQ(csum2, extent->get_crc32c());
}
});
}
|
