ceph/src/test/librbd/object_map/test_mock_UpdateRequest.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #include "test/librbd/test_mock_fixture.h"
   5 #include "test/librbd/test_support.h"
   6 #include "test/librados_test_stub/MockTestMemIoCtxImpl.h"
   7 #include "common/bit_vector.hpp"
   8 #include "librbd/ImageState.h"
   9 #include "librbd/internal.h"
  10 #include "librbd/ObjectMap.h"
  11 #include "librbd/Operations.h"
  12 #include "librbd/object_map/UpdateRequest.h"
  13 #include "gmock/gmock.h"
  14 #include "gtest/gtest.h"
  15
  16 namespace librbd {
  17 namespace object_map {
  18
  19 using ::testing::_;
  20 using ::testing::DoDefault;
  21 using ::testing::InSequence;
  22 using ::testing::Return;
  23 using ::testing::StrEq;
  24
  25 class TestMockObjectMapUpdateRequest : public TestMockFixture {
  26 public:
  27   void expect_update(librbd::ImageCtx *ictx, uint64_t snap_id,
  28                      uint64_t start_object_no, uint64_t end_object_no,
  29                      uint8_t new_state,
  30                      const boost::optional<uint8_t>& current_state, int r) {
  31     bufferlist bl;
  32     ::encode(start_object_no, bl);
  33     ::encode(end_object_no, bl);
  34     ::encode(new_state, bl);
  35     ::encode(current_state, bl);
  36
  37     std::string oid(ObjectMap<>::object_map_name(ictx->id, snap_id));
  38     if (snap_id == CEPH_NOSNAP) {
  39       EXPECT_CALL(get_mock_io_ctx(ictx->md_ctx),
  40                   exec(oid, _, StrEq("lock"), StrEq("assert_locked"), _, _, _))
  41                     .WillOnce(DoDefault());
  42     }
  43
  44     if (r < 0) {
  45       EXPECT_CALL(get_mock_io_ctx(ictx->md_ctx),
  46                   exec(oid, _, StrEq("rbd"), StrEq("object_map_update"),
  47                        ContentsEqual(bl), _, _))
  48                     .WillOnce(Return(r));
  49     } else {
  50       EXPECT_CALL(get_mock_io_ctx(ictx->md_ctx),
  51                   exec(oid, _, StrEq("rbd"), StrEq("object_map_update"),
  52                        ContentsEqual(bl), _, _))
  53                     .WillOnce(DoDefault());
  54     }
  55   }
  56
  57   void expect_invalidate(librbd::ImageCtx *ictx) {
  58     EXPECT_CALL(get_mock_io_ctx(ictx->md_ctx),
  59                 exec(ictx->header_oid, _, StrEq("rbd"), StrEq("set_flags"), _, _, _))
  60                   .WillOnce(DoDefault());
  61   }
  62 };
  63
  64 TEST_F(TestMockObjectMapUpdateRequest, UpdateInMemory) {
  65   REQUIRE_FEATURE(RBD_FEATURE_OBJECT_MAP);
  66
  67   librbd::ImageCtx *ictx;
  68   ASSERT_EQ(0, open_image(m_image_name, &ictx));
  69
  70   librbd::NoOpProgressContext no_progress;
  71   ASSERT_EQ(0, ictx->operations->resize(4 << ictx->order, true, no_progress));
  72   ASSERT_EQ(0, acquire_exclusive_lock(*ictx));
  73
  74   ceph::BitVector<2> object_map;
  75   object_map.resize(4);
  76   for (uint64_t i = 0; i < object_map.size(); ++i) {
  77     object_map[i] = i % 4;
  78   }
  79
  80   C_SaferCond cond_ctx;
  81   AsyncRequest<> *req = new UpdateRequest<>(
  82     *ictx, &object_map, CEPH_NOSNAP, 0, object_map.size(), OBJECT_NONEXISTENT,
  83     OBJECT_EXISTS, {}, false, &cond_ctx);
  84   {
  85     RWLock::RLocker snap_locker(ictx->snap_lock);
  86     RWLock::WLocker object_map_locker(ictx->object_map_lock);
  87     req->send();
  88   }
  89   ASSERT_EQ(0, cond_ctx.wait());
  90
  91   for (uint64_t i = 0; i < object_map.size(); ++i) {
  92     if (i % 4 == OBJECT_EXISTS || i % 4 == OBJECT_EXISTS_CLEAN) {
  93       ASSERT_EQ(OBJECT_NONEXISTENT, object_map[i]);
  94     } else {
  95       ASSERT_EQ(i % 4, object_map[i]);
  96     }
  97   }
  98 }
  99
 100 TEST_F(TestMockObjectMapUpdateRequest, UpdateHeadOnDisk) {
 101   REQUIRE_FEATURE(RBD_FEATURE_OBJECT_MAP);
 102
 103   librbd::ImageCtx *ictx;
 104   ASSERT_EQ(0, open_image(m_image_name, &ictx));
 105   ASSERT_EQ(0, acquire_exclusive_lock(*ictx));
 106
 107   expect_update(ictx, CEPH_NOSNAP, 0, 1, OBJECT_NONEXISTENT, OBJECT_EXISTS, 0);
 108
 109   ceph::BitVector<2> object_map;
 110   object_map.resize(1);
 111
 112   C_SaferCond cond_ctx;
 113   AsyncRequest<> *req = new UpdateRequest<>(
 114     *ictx, &object_map, CEPH_NOSNAP, 0, object_map.size(), OBJECT_NONEXISTENT,
 115     OBJECT_EXISTS, {}, false, &cond_ctx);
 116   {
 117     RWLock::RLocker snap_locker(ictx->snap_lock);
 118     RWLock::WLocker object_map_locker(ictx->object_map_lock);
 119     req->send();
 120   }
 121   ASSERT_EQ(0, cond_ctx.wait());
 122
 123   expect_unlock_exclusive_lock(*ictx);
 124 }
 125
 126 TEST_F(TestMockObjectMapUpdateRequest, UpdateSnapOnDisk) {
 127   REQUIRE_FEATURE(RBD_FEATURE_OBJECT_MAP);
 128
 129   librbd::ImageCtx *ictx;
 130   ASSERT_EQ(0, open_image(m_image_name, &ictx));
 131   ASSERT_EQ(0, snap_create(*ictx, "snap1"));
 132   ASSERT_EQ(0, librbd::snap_set(ictx,
 133                                 cls::rbd::UserSnapshotNamespace(),
 134                                 "snap1"));
 135
 136   uint64_t snap_id = ictx->snap_id;
 137   expect_update(ictx, snap_id, 0, 1, OBJECT_NONEXISTENT, OBJECT_EXISTS, 0);
 138
 139   ceph::BitVector<2> object_map;
 140   object_map.resize(1);
 141
 142   C_SaferCond cond_ctx;
 143   AsyncRequest<> *req = new UpdateRequest<>(
 144     *ictx, &object_map, snap_id, 0, object_map.size(), OBJECT_NONEXISTENT,
 145     OBJECT_EXISTS, {}, false, &cond_ctx);
 146   {
 147     RWLock::RLocker snap_locker(ictx->snap_lock);
 148     RWLock::WLocker object_map_locker(ictx->object_map_lock);
 149     req->send();
 150   }
 151   ASSERT_EQ(0, cond_ctx.wait());
 152
 153   expect_unlock_exclusive_lock(*ictx);
 154 }
 155
 156 TEST_F(TestMockObjectMapUpdateRequest, UpdateOnDiskError) {
 157   REQUIRE_FEATURE(RBD_FEATURE_OBJECT_MAP);
 158
 159   librbd::ImageCtx *ictx;
 160   ASSERT_EQ(0, open_image(m_image_name, &ictx));
 161   ASSERT_EQ(0, acquire_exclusive_lock(*ictx));
 162
 163   expect_update(ictx, CEPH_NOSNAP, 0, 1, OBJECT_NONEXISTENT, OBJECT_EXISTS,
 164                 -EINVAL);
 165   expect_invalidate(ictx);
 166
 167   ceph::BitVector<2> object_map;
 168   object_map.resize(1);
 169
 170   C_SaferCond cond_ctx;
 171   AsyncRequest<> *req = new UpdateRequest<>(
 172     *ictx, &object_map, CEPH_NOSNAP, 0, object_map.size(), OBJECT_NONEXISTENT,
 173     OBJECT_EXISTS, {}, false, &cond_ctx);
 174   {
 175     RWLock::RLocker snap_locker(ictx->snap_lock);
 176     RWLock::WLocker object_map_locker(ictx->object_map_lock);
 177     req->send();
 178   }
 179   ASSERT_EQ(0, cond_ctx.wait());
 180
 181   expect_unlock_exclusive_lock(*ictx);
 182 }
 183
 184 TEST_F(TestMockObjectMapUpdateRequest, RebuildSnapOnDisk) {
 185   REQUIRE_FEATURE(RBD_FEATURE_OBJECT_MAP);
 186
 187   librbd::ImageCtx *ictx;
 188   ASSERT_EQ(0, open_image(m_image_name, &ictx));
 189   ASSERT_EQ(0, snap_create(*ictx, "snap1"));
 190   ASSERT_EQ(0, ictx->state->refresh_if_required());
 191   ASSERT_EQ(CEPH_NOSNAP, ictx->snap_id);
 192
 193   uint64_t snap_id = ictx->snap_info.rbegin()->first;
 194   expect_update(ictx, snap_id, 0, 1, OBJECT_EXISTS_CLEAN,
 195                 boost::optional<uint8_t>(), 0);
 196   expect_unlock_exclusive_lock(*ictx);
 197
 198   ceph::BitVector<2> object_map;
 199   object_map.resize(1);
 200
 201   C_SaferCond cond_ctx;
 202   AsyncRequest<> *req = new UpdateRequest<>(
 203     *ictx, &object_map, snap_id, 0, object_map.size(), OBJECT_EXISTS_CLEAN,
 204     boost::optional<uint8_t>(), {}, false, &cond_ctx);
 205   {
 206     RWLock::RLocker snap_locker(ictx->snap_lock);
 207     RWLock::WLocker object_map_locker(ictx->object_map_lock);
 208     req->send();
 209   }
 210   ASSERT_EQ(0, cond_ctx.wait());
 211
 212   // do not update the in-memory map if rebuilding a snapshot
 213   ASSERT_NE(OBJECT_EXISTS_CLEAN, object_map[0]);
 214 }
 215
 216 TEST_F(TestMockObjectMapUpdateRequest, BatchUpdate) {
 217   REQUIRE_FEATURE(RBD_FEATURE_OBJECT_MAP);
 218
 219   librbd::ImageCtx *ictx;
 220   ASSERT_EQ(0, open_image(m_image_name, &ictx));
 221
 222   librbd::NoOpProgressContext no_progress;
 223   ASSERT_EQ(0, ictx->operations->resize(712312 * ictx->get_object_size(), false,
 224                                         no_progress));
 225   ASSERT_EQ(0, acquire_exclusive_lock(*ictx));
 226
 227   InSequence seq;
 228   expect_update(ictx, CEPH_NOSNAP, 0, 262144, OBJECT_NONEXISTENT, OBJECT_EXISTS,
 229                 0);
 230   expect_update(ictx, CEPH_NOSNAP, 262144, 524288, OBJECT_NONEXISTENT,
 231                 OBJECT_EXISTS, 0);
 232   expect_update(ictx, CEPH_NOSNAP, 524288, 712312, OBJECT_NONEXISTENT,
 233                 OBJECT_EXISTS, 0);
 234   expect_unlock_exclusive_lock(*ictx);
 235
 236   ceph::BitVector<2> object_map;
 237   object_map.resize(712312);
 238
 239   C_SaferCond cond_ctx;
 240   AsyncRequest<> *req = new UpdateRequest<>(
 241     *ictx, &object_map, CEPH_NOSNAP, 0, object_map.size(), OBJECT_NONEXISTENT,
 242     OBJECT_EXISTS, {}, false, &cond_ctx);
 243   {
 244     RWLock::RLocker snap_locker(ictx->snap_lock);
 245     RWLock::WLocker object_map_locker(ictx->object_map_lock);
 246     req->send();
 247   }
 248   ASSERT_EQ(0, cond_ctx.wait());
 249 }
 250
 251 TEST_F(TestMockObjectMapUpdateRequest, IgnoreMissingObjectMap) {
 252   REQUIRE_FEATURE(RBD_FEATURE_OBJECT_MAP);
 253
 254   librbd::ImageCtx *ictx;
 255   ASSERT_EQ(0, open_image(m_image_name, &ictx));
 256   ASSERT_EQ(0, acquire_exclusive_lock(*ictx));
 257
 258   expect_update(ictx, CEPH_NOSNAP, 0, 1, OBJECT_NONEXISTENT, OBJECT_EXISTS,
 259                 -ENOENT);
 260
 261   ceph::BitVector<2> object_map;
 262   object_map.resize(1);
 263
 264   C_SaferCond cond_ctx;
 265   AsyncRequest<> *req = new UpdateRequest<>(
 266     *ictx, &object_map, CEPH_NOSNAP, 0, object_map.size(), OBJECT_NONEXISTENT,
 267     OBJECT_EXISTS, {}, true, &cond_ctx);
 268   {
 269     RWLock::RLocker snap_locker(ictx->snap_lock);
 270     RWLock::WLocker object_map_locker(ictx->object_map_lock);
 271     req->send();
 272   }
 273   ASSERT_EQ(0, cond_ctx.wait());
 274
 275   expect_unlock_exclusive_lock(*ictx);
 276 }
 277
 278 } // namespace object_map
 279 } // namespace librbd