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7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include "include/compat.h" | |
5 | #include "common/Formatter.h" | |
6 | #include "common/debug.h" | |
7 | #include "common/errno.h" | |
8 | #include "include/stringify.h" | |
9 | #include "cls/rbd/cls_rbd_client.h" | |
10 | #include "common/Timer.h" | |
11 | #include "common/WorkQueue.h" | |
12 | #include "global/global_context.h" | |
13 | #include "journal/Journaler.h" | |
14 | #include "journal/ReplayHandler.h" | |
15 | #include "journal/Settings.h" | |
16 | #include "librbd/ExclusiveLock.h" | |
17 | #include "librbd/ImageCtx.h" | |
18 | #include "librbd/ImageState.h" | |
19 | #include "librbd/Journal.h" | |
20 | #include "librbd/Operations.h" | |
21 | #include "librbd/Utils.h" | |
22 | #include "librbd/journal/Replay.h" | |
d2e6a577 | 23 | #include "ImageDeleter.h" |
7c673cae | 24 | #include "ImageReplayer.h" |
7c673cae FG |
25 | #include "Threads.h" |
26 | #include "tools/rbd_mirror/image_replayer/BootstrapRequest.h" | |
27 | #include "tools/rbd_mirror/image_replayer/CloseImageRequest.h" | |
28 | #include "tools/rbd_mirror/image_replayer/EventPreprocessor.h" | |
29 | #include "tools/rbd_mirror/image_replayer/PrepareLocalImageRequest.h" | |
d2e6a577 | 30 | #include "tools/rbd_mirror/image_replayer/PrepareRemoteImageRequest.h" |
7c673cae FG |
31 | #include "tools/rbd_mirror/image_replayer/ReplayStatusFormatter.h" |
32 | ||
33 | #define dout_context g_ceph_context | |
34 | #define dout_subsys ceph_subsys_rbd_mirror | |
35 | #undef dout_prefix | |
36 | #define dout_prefix *_dout << "rbd::mirror::" << *this << " " \ | |
37 | << __func__ << ": " | |
38 | ||
39 | using std::map; | |
40 | using std::string; | |
41 | using std::unique_ptr; | |
42 | using std::shared_ptr; | |
43 | using std::vector; | |
44 | ||
45 | namespace rbd { | |
46 | namespace mirror { | |
47 | ||
48 | using librbd::util::create_context_callback; | |
49 | using librbd::util::create_rados_callback; | |
50 | using namespace rbd::mirror::image_replayer; | |
51 | ||
52 | template <typename I> | |
53 | std::ostream &operator<<(std::ostream &os, | |
54 | const typename ImageReplayer<I>::State &state); | |
55 | ||
56 | namespace { | |
57 | ||
58 | template <typename I> | |
59 | struct ReplayHandler : public ::journal::ReplayHandler { | |
60 | ImageReplayer<I> *replayer; | |
61 | ReplayHandler(ImageReplayer<I> *replayer) : replayer(replayer) {} | |
62 | void get() override {} | |
63 | void put() override {} | |
64 | ||
65 | void handle_entries_available() override { | |
66 | replayer->handle_replay_ready(); | |
67 | } | |
68 | void handle_complete(int r) override { | |
69 | std::stringstream ss; | |
70 | if (r < 0) { | |
71 | ss << "replay completed with error: " << cpp_strerror(r); | |
72 | } | |
73 | replayer->handle_replay_complete(r, ss.str()); | |
74 | } | |
75 | }; | |
76 | ||
3efd9988 | 77 | template <typename I> |
7c673cae FG |
78 | class ImageReplayerAdminSocketCommand { |
79 | public: | |
3efd9988 FG |
80 | ImageReplayerAdminSocketCommand(const std::string &desc, |
81 | ImageReplayer<I> *replayer) | |
82 | : desc(desc), replayer(replayer) { | |
83 | } | |
7c673cae FG |
84 | virtual ~ImageReplayerAdminSocketCommand() {} |
85 | virtual bool call(Formatter *f, stringstream *ss) = 0; | |
3efd9988 FG |
86 | |
87 | std::string desc; | |
88 | ImageReplayer<I> *replayer; | |
89 | bool registered = false; | |
7c673cae FG |
90 | }; |
91 | ||
92 | template <typename I> | |
3efd9988 | 93 | class StatusCommand : public ImageReplayerAdminSocketCommand<I> { |
7c673cae | 94 | public: |
3efd9988 FG |
95 | explicit StatusCommand(const std::string &desc, ImageReplayer<I> *replayer) |
96 | : ImageReplayerAdminSocketCommand<I>(desc, replayer) { | |
97 | } | |
7c673cae FG |
98 | |
99 | bool call(Formatter *f, stringstream *ss) override { | |
3efd9988 | 100 | this->replayer->print_status(f, ss); |
7c673cae FG |
101 | return true; |
102 | } | |
7c673cae FG |
103 | }; |
104 | ||
105 | template <typename I> | |
3efd9988 | 106 | class StartCommand : public ImageReplayerAdminSocketCommand<I> { |
7c673cae | 107 | public: |
3efd9988 FG |
108 | explicit StartCommand(const std::string &desc, ImageReplayer<I> *replayer) |
109 | : ImageReplayerAdminSocketCommand<I>(desc, replayer) { | |
110 | } | |
7c673cae FG |
111 | |
112 | bool call(Formatter *f, stringstream *ss) override { | |
3efd9988 | 113 | this->replayer->start(nullptr, true); |
7c673cae FG |
114 | return true; |
115 | } | |
7c673cae FG |
116 | }; |
117 | ||
118 | template <typename I> | |
3efd9988 | 119 | class StopCommand : public ImageReplayerAdminSocketCommand<I> { |
7c673cae | 120 | public: |
3efd9988 FG |
121 | explicit StopCommand(const std::string &desc, ImageReplayer<I> *replayer) |
122 | : ImageReplayerAdminSocketCommand<I>(desc, replayer) { | |
123 | } | |
7c673cae FG |
124 | |
125 | bool call(Formatter *f, stringstream *ss) override { | |
3efd9988 | 126 | this->replayer->stop(nullptr, true); |
7c673cae FG |
127 | return true; |
128 | } | |
7c673cae FG |
129 | }; |
130 | ||
131 | template <typename I> | |
3efd9988 | 132 | class RestartCommand : public ImageReplayerAdminSocketCommand<I> { |
7c673cae | 133 | public: |
3efd9988 FG |
134 | explicit RestartCommand(const std::string &desc, ImageReplayer<I> *replayer) |
135 | : ImageReplayerAdminSocketCommand<I>(desc, replayer) { | |
136 | } | |
7c673cae FG |
137 | |
138 | bool call(Formatter *f, stringstream *ss) override { | |
3efd9988 | 139 | this->replayer->restart(); |
7c673cae FG |
140 | return true; |
141 | } | |
7c673cae FG |
142 | }; |
143 | ||
144 | template <typename I> | |
3efd9988 | 145 | class FlushCommand : public ImageReplayerAdminSocketCommand<I> { |
7c673cae | 146 | public: |
3efd9988 FG |
147 | explicit FlushCommand(const std::string &desc, ImageReplayer<I> *replayer) |
148 | : ImageReplayerAdminSocketCommand<I>(desc, replayer) { | |
149 | } | |
7c673cae FG |
150 | |
151 | bool call(Formatter *f, stringstream *ss) override { | |
152 | C_SaferCond cond; | |
3efd9988 | 153 | this->replayer->flush(&cond); |
7c673cae FG |
154 | int r = cond.wait(); |
155 | if (r < 0) { | |
156 | *ss << "flush: " << cpp_strerror(r); | |
157 | return false; | |
158 | } | |
159 | return true; | |
160 | } | |
7c673cae FG |
161 | }; |
162 | ||
163 | template <typename I> | |
164 | class ImageReplayerAdminSocketHook : public AdminSocketHook { | |
165 | public: | |
166 | ImageReplayerAdminSocketHook(CephContext *cct, const std::string &name, | |
31f18b77 | 167 | ImageReplayer<I> *replayer) |
3efd9988 FG |
168 | : admin_socket(cct->get_admin_socket()), |
169 | commands{{"rbd mirror flush " + name, | |
170 | new FlushCommand<I>("flush rbd mirror " + name, replayer)}, | |
171 | {"rbd mirror restart " + name, | |
172 | new RestartCommand<I>("restart rbd mirror " + name, replayer)}, | |
173 | {"rbd mirror start " + name, | |
174 | new StartCommand<I>("start rbd mirror " + name, replayer)}, | |
175 | {"rbd mirror status " + name, | |
176 | new StatusCommand<I>("get status for rbd mirror " + name, replayer)}, | |
177 | {"rbd mirror stop " + name, | |
178 | new StopCommand<I>("stop rbd mirror " + name, replayer)}} { | |
d2e6a577 FG |
179 | } |
180 | ||
181 | int register_commands() { | |
3efd9988 FG |
182 | for (auto &it : commands) { |
183 | int r = admin_socket->register_command(it.first, it.first, this, | |
184 | it.second->desc); | |
185 | if (r < 0) { | |
186 | return r; | |
187 | } | |
188 | it.second->registered = true; | |
7c673cae | 189 | } |
d2e6a577 | 190 | return 0; |
7c673cae FG |
191 | } |
192 | ||
193 | ~ImageReplayerAdminSocketHook() override { | |
3efd9988 FG |
194 | for (auto &it : commands) { |
195 | if (it.second->registered) { | |
196 | admin_socket->unregister_command(it.first); | |
197 | } | |
198 | delete it.second; | |
7c673cae | 199 | } |
31f18b77 | 200 | commands.clear(); |
7c673cae FG |
201 | } |
202 | ||
203 | bool call(std::string command, cmdmap_t& cmdmap, std::string format, | |
204 | bufferlist& out) override { | |
3efd9988 | 205 | auto i = commands.find(command); |
7c673cae FG |
206 | assert(i != commands.end()); |
207 | Formatter *f = Formatter::create(format); | |
208 | stringstream ss; | |
209 | bool r = i->second->call(f, &ss); | |
210 | delete f; | |
211 | out.append(ss); | |
212 | return r; | |
213 | } | |
214 | ||
215 | private: | |
3efd9988 | 216 | typedef std::map<std::string, ImageReplayerAdminSocketCommand<I> *> Commands; |
7c673cae FG |
217 | |
218 | AdminSocket *admin_socket; | |
219 | Commands commands; | |
220 | }; | |
221 | ||
222 | uint32_t calculate_replay_delay(const utime_t &event_time, | |
223 | int mirroring_replay_delay) { | |
224 | if (mirroring_replay_delay <= 0) { | |
225 | return 0; | |
226 | } | |
227 | ||
228 | utime_t now = ceph_clock_now(); | |
229 | if (event_time + mirroring_replay_delay <= now) { | |
230 | return 0; | |
231 | } | |
232 | ||
233 | // ensure it is rounded up when converting to integer | |
234 | return (event_time + mirroring_replay_delay - now) + 1; | |
235 | } | |
236 | ||
237 | } // anonymous namespace | |
238 | ||
239 | template <typename I> | |
240 | void ImageReplayer<I>::BootstrapProgressContext::update_progress( | |
241 | const std::string &description, bool flush) | |
242 | { | |
243 | const std::string desc = "bootstrapping, " + description; | |
244 | replayer->set_state_description(0, desc); | |
245 | if (flush) { | |
246 | replayer->update_mirror_image_status(false, boost::none); | |
247 | } | |
248 | } | |
249 | ||
250 | template <typename I> | |
251 | void ImageReplayer<I>::RemoteJournalerListener::handle_update( | |
252 | ::journal::JournalMetadata *) { | |
253 | FunctionContext *ctx = new FunctionContext([this](int r) { | |
254 | replayer->handle_remote_journal_metadata_updated(); | |
255 | }); | |
256 | replayer->m_threads->work_queue->queue(ctx, 0); | |
257 | } | |
258 | ||
259 | template <typename I> | |
d2e6a577 | 260 | ImageReplayer<I>::ImageReplayer(Threads<I> *threads, |
c07f9fc5 | 261 | ImageDeleter<I>* image_deleter, |
31f18b77 | 262 | InstanceWatcher<I> *instance_watcher, |
7c673cae FG |
263 | RadosRef local, |
264 | const std::string &local_mirror_uuid, | |
265 | int64_t local_pool_id, | |
266 | const std::string &global_image_id) : | |
267 | m_threads(threads), | |
268 | m_image_deleter(image_deleter), | |
31f18b77 | 269 | m_instance_watcher(instance_watcher), |
7c673cae FG |
270 | m_local(local), |
271 | m_local_mirror_uuid(local_mirror_uuid), | |
272 | m_local_pool_id(local_pool_id), | |
273 | m_global_image_id(global_image_id), | |
274 | m_lock("rbd::mirror::ImageReplayer " + stringify(local_pool_id) + " " + | |
275 | global_image_id), | |
276 | m_progress_cxt(this), | |
277 | m_journal_listener(new JournalListener(this)), | |
278 | m_remote_listener(this) | |
279 | { | |
280 | // Register asok commands using a temporary "remote_pool_name/global_image_id" | |
281 | // name. When the image name becomes known on start the asok commands will be | |
282 | // re-registered using "remote_pool_name/remote_image_name" name. | |
283 | ||
284 | std::string pool_name; | |
285 | int r = m_local->pool_reverse_lookup(m_local_pool_id, &pool_name); | |
286 | if (r < 0) { | |
287 | derr << "error resolving local pool " << m_local_pool_id | |
288 | << ": " << cpp_strerror(r) << dendl; | |
289 | pool_name = stringify(m_local_pool_id); | |
290 | } | |
291 | ||
292 | m_name = pool_name + "/" + m_global_image_id; | |
d2e6a577 | 293 | register_admin_socket_hook(); |
7c673cae FG |
294 | } |
295 | ||
296 | template <typename I> | |
297 | ImageReplayer<I>::~ImageReplayer() | |
298 | { | |
d2e6a577 | 299 | unregister_admin_socket_hook(); |
7c673cae FG |
300 | assert(m_event_preprocessor == nullptr); |
301 | assert(m_replay_status_formatter == nullptr); | |
302 | assert(m_local_image_ctx == nullptr); | |
303 | assert(m_local_replay == nullptr); | |
304 | assert(m_remote_journaler == nullptr); | |
305 | assert(m_replay_handler == nullptr); | |
306 | assert(m_on_start_finish == nullptr); | |
307 | assert(m_on_stop_finish == nullptr); | |
308 | assert(m_bootstrap_request == nullptr); | |
309 | assert(m_in_flight_status_updates == 0); | |
310 | ||
311 | delete m_journal_listener; | |
7c673cae FG |
312 | } |
313 | ||
c07f9fc5 FG |
314 | template <typename I> |
315 | image_replayer::HealthState ImageReplayer<I>::get_health_state() const { | |
316 | Mutex::Locker locker(m_lock); | |
317 | ||
318 | if (!m_mirror_image_status_state) { | |
319 | return image_replayer::HEALTH_STATE_OK; | |
320 | } else if (*m_mirror_image_status_state == | |
321 | cls::rbd::MIRROR_IMAGE_STATUS_STATE_SYNCING || | |
322 | *m_mirror_image_status_state == | |
323 | cls::rbd::MIRROR_IMAGE_STATUS_STATE_UNKNOWN) { | |
324 | return image_replayer::HEALTH_STATE_WARNING; | |
325 | } | |
326 | return image_replayer::HEALTH_STATE_ERROR; | |
327 | } | |
328 | ||
7c673cae | 329 | template <typename I> |
d2e6a577 FG |
330 | void ImageReplayer<I>::add_peer(const std::string &peer_uuid, |
331 | librados::IoCtx &io_ctx) { | |
7c673cae | 332 | Mutex::Locker locker(m_lock); |
d2e6a577 FG |
333 | auto it = m_peers.find({peer_uuid}); |
334 | if (it == m_peers.end()) { | |
335 | m_peers.insert({peer_uuid, io_ctx}); | |
7c673cae FG |
336 | } |
337 | } | |
338 | ||
7c673cae FG |
339 | template <typename I> |
340 | void ImageReplayer<I>::set_state_description(int r, const std::string &desc) { | |
341 | dout(20) << r << " " << desc << dendl; | |
342 | ||
343 | Mutex::Locker l(m_lock); | |
344 | m_last_r = r; | |
345 | m_state_desc = desc; | |
346 | } | |
347 | ||
348 | template <typename I> | |
349 | void ImageReplayer<I>::start(Context *on_finish, bool manual) | |
350 | { | |
351 | dout(20) << "on_finish=" << on_finish << dendl; | |
352 | ||
353 | int r = 0; | |
354 | { | |
355 | Mutex::Locker locker(m_lock); | |
356 | if (!is_stopped_()) { | |
357 | derr << "already running" << dendl; | |
358 | r = -EINVAL; | |
359 | } else if (m_manual_stop && !manual) { | |
360 | dout(5) << "stopped manually, ignoring start without manual flag" | |
361 | << dendl; | |
362 | r = -EPERM; | |
363 | } else { | |
364 | m_state = STATE_STARTING; | |
365 | m_last_r = 0; | |
366 | m_state_desc.clear(); | |
367 | m_manual_stop = false; | |
d2e6a577 | 368 | m_delete_requested = false; |
7c673cae FG |
369 | |
370 | if (on_finish != nullptr) { | |
371 | assert(m_on_start_finish == nullptr); | |
372 | m_on_start_finish = on_finish; | |
373 | } | |
374 | assert(m_on_stop_finish == nullptr); | |
375 | } | |
376 | } | |
377 | ||
378 | if (r < 0) { | |
379 | if (on_finish) { | |
380 | on_finish->complete(r); | |
381 | } | |
382 | return; | |
383 | } | |
384 | ||
385 | r = m_local->ioctx_create2(m_local_pool_id, m_local_ioctx); | |
386 | if (r < 0) { | |
387 | derr << "error opening ioctx for local pool " << m_local_pool_id | |
388 | << ": " << cpp_strerror(r) << dendl; | |
389 | on_start_fail(r, "error opening local pool"); | |
390 | return; | |
391 | } | |
392 | ||
d2e6a577 FG |
393 | wait_for_deletion(); |
394 | } | |
395 | ||
396 | template <typename I> | |
397 | void ImageReplayer<I>::wait_for_deletion() { | |
398 | dout(20) << dendl; | |
399 | ||
400 | Context *ctx = create_context_callback< | |
401 | ImageReplayer, &ImageReplayer<I>::handle_wait_for_deletion>(this); | |
402 | m_image_deleter->wait_for_scheduled_deletion( | |
403 | m_local_pool_id, m_global_image_id, ctx, false); | |
404 | } | |
405 | ||
406 | template <typename I> | |
407 | void ImageReplayer<I>::handle_wait_for_deletion(int r) { | |
408 | dout(20) << "r=" << r << dendl; | |
409 | ||
410 | if (r == -ECANCELED) { | |
411 | on_start_fail(0, ""); | |
412 | return; | |
413 | } else if (r < 0) { | |
414 | on_start_fail(r, "error waiting for image deletion"); | |
415 | return; | |
416 | } | |
417 | ||
7c673cae FG |
418 | prepare_local_image(); |
419 | } | |
420 | ||
421 | template <typename I> | |
422 | void ImageReplayer<I>::prepare_local_image() { | |
423 | dout(20) << dendl; | |
424 | ||
d2e6a577 | 425 | m_local_image_id = ""; |
7c673cae FG |
426 | Context *ctx = create_context_callback< |
427 | ImageReplayer, &ImageReplayer<I>::handle_prepare_local_image>(this); | |
428 | auto req = PrepareLocalImageRequest<I>::create( | |
429 | m_local_ioctx, m_global_image_id, &m_local_image_id, | |
430 | &m_local_image_tag_owner, m_threads->work_queue, ctx); | |
431 | req->send(); | |
432 | } | |
433 | ||
434 | template <typename I> | |
435 | void ImageReplayer<I>::handle_prepare_local_image(int r) { | |
436 | dout(20) << "r=" << r << dendl; | |
437 | ||
438 | if (r == -ENOENT) { | |
439 | dout(20) << "local image does not exist" << dendl; | |
440 | } else if (r < 0) { | |
441 | on_start_fail(r, "error preparing local image for replay"); | |
442 | return; | |
7c673cae FG |
443 | } |
444 | ||
445 | // local image doesn't exist or is non-primary | |
d2e6a577 | 446 | prepare_remote_image(); |
7c673cae FG |
447 | } |
448 | ||
449 | template <typename I> | |
d2e6a577 | 450 | void ImageReplayer<I>::prepare_remote_image() { |
7c673cae | 451 | dout(20) << dendl; |
b32b8144 FG |
452 | if (m_peers.empty()) { |
453 | // technically nothing to bootstrap, but it handles the status update | |
454 | bootstrap(); | |
455 | return; | |
456 | } | |
7c673cae | 457 | |
d2e6a577 FG |
458 | // TODO need to support multiple remote images |
459 | assert(!m_peers.empty()); | |
460 | m_remote_image = {*m_peers.begin()}; | |
461 | ||
462 | Context *ctx = create_context_callback< | |
463 | ImageReplayer, &ImageReplayer<I>::handle_prepare_remote_image>(this); | |
464 | auto req = PrepareRemoteImageRequest<I>::create( | |
b32b8144 FG |
465 | m_threads, m_remote_image.io_ctx, m_global_image_id, m_local_mirror_uuid, |
466 | m_local_image_id, &m_remote_image.mirror_uuid, &m_remote_image.image_id, | |
467 | &m_remote_journaler, &m_client_state, &m_client_meta, ctx); | |
d2e6a577 FG |
468 | req->send(); |
469 | } | |
470 | ||
471 | template <typename I> | |
472 | void ImageReplayer<I>::handle_prepare_remote_image(int r) { | |
473 | dout(20) << "r=" << r << dendl; | |
474 | ||
b32b8144 FG |
475 | assert(r < 0 ? m_remote_journaler == nullptr : m_remote_journaler != nullptr); |
476 | if (r < 0 && !m_local_image_id.empty() && | |
477 | m_local_image_tag_owner == librbd::Journal<>::LOCAL_MIRROR_UUID) { | |
478 | // local image is primary -- fall-through | |
479 | } else if (r == -ENOENT) { | |
d2e6a577 FG |
480 | dout(20) << "remote image does not exist" << dendl; |
481 | ||
482 | // TODO need to support multiple remote images | |
483 | if (!m_local_image_id.empty() && | |
484 | m_local_image_tag_owner == m_remote_image.mirror_uuid) { | |
485 | // local image exists and is non-primary and linked to the missing | |
486 | // remote image | |
487 | ||
488 | m_delete_requested = true; | |
489 | on_start_fail(0, "remote image no longer exists"); | |
490 | } else { | |
491 | on_start_fail(-ENOENT, "remote image does not exist"); | |
492 | } | |
493 | return; | |
494 | } else if (r < 0) { | |
495 | on_start_fail(r, "error retrieving remote image id"); | |
7c673cae FG |
496 | return; |
497 | } | |
498 | ||
d2e6a577 FG |
499 | bootstrap(); |
500 | } | |
501 | ||
502 | template <typename I> | |
503 | void ImageReplayer<I>::bootstrap() { | |
504 | dout(20) << dendl; | |
7c673cae | 505 | |
b32b8144 FG |
506 | if (!m_local_image_id.empty() && |
507 | m_local_image_tag_owner == librbd::Journal<>::LOCAL_MIRROR_UUID) { | |
508 | dout(5) << "local image is primary" << dendl; | |
509 | on_start_fail(0, "local image is primary"); | |
510 | return; | |
511 | } else if (m_peers.empty()) { | |
512 | dout(5) << "no peer clusters" << dendl; | |
513 | on_start_fail(-ENOENT, "no peer clusters"); | |
514 | return; | |
515 | } | |
7c673cae FG |
516 | |
517 | Context *ctx = create_context_callback< | |
518 | ImageReplayer, &ImageReplayer<I>::handle_bootstrap>(this); | |
519 | ||
520 | BootstrapRequest<I> *request = BootstrapRequest<I>::create( | |
31f18b77 | 521 | m_local_ioctx, m_remote_image.io_ctx, m_instance_watcher, |
7c673cae FG |
522 | &m_local_image_ctx, m_local_image_id, m_remote_image.image_id, |
523 | m_global_image_id, m_threads->work_queue, m_threads->timer, | |
524 | &m_threads->timer_lock, m_local_mirror_uuid, m_remote_image.mirror_uuid, | |
b32b8144 FG |
525 | m_remote_journaler, &m_client_state, &m_client_meta, ctx, |
526 | &m_resync_requested, &m_progress_cxt); | |
7c673cae FG |
527 | |
528 | { | |
529 | Mutex::Locker locker(m_lock); | |
530 | request->get(); | |
531 | m_bootstrap_request = request; | |
532 | } | |
533 | ||
534 | update_mirror_image_status(false, boost::none); | |
535 | reschedule_update_status_task(10); | |
536 | ||
537 | request->send(); | |
538 | } | |
539 | ||
540 | template <typename I> | |
541 | void ImageReplayer<I>::handle_bootstrap(int r) { | |
542 | dout(20) << "r=" << r << dendl; | |
543 | { | |
544 | Mutex::Locker locker(m_lock); | |
545 | m_bootstrap_request->put(); | |
546 | m_bootstrap_request = nullptr; | |
547 | if (m_local_image_ctx) { | |
548 | m_local_image_id = m_local_image_ctx->id; | |
549 | } | |
550 | } | |
551 | ||
552 | if (r == -EREMOTEIO) { | |
553 | m_local_image_tag_owner = ""; | |
c07f9fc5 FG |
554 | dout(5) << "remote image is non-primary" << dendl; |
555 | on_start_fail(-EREMOTEIO, "remote image is non-primary"); | |
7c673cae FG |
556 | return; |
557 | } else if (r == -EEXIST) { | |
558 | m_local_image_tag_owner = ""; | |
559 | on_start_fail(r, "split-brain detected"); | |
560 | return; | |
561 | } else if (r < 0) { | |
562 | on_start_fail(r, "error bootstrapping replay"); | |
563 | return; | |
564 | } else if (on_start_interrupted()) { | |
565 | return; | |
d2e6a577 FG |
566 | } else if (m_resync_requested) { |
567 | on_start_fail(0, "resync requested"); | |
568 | return; | |
7c673cae FG |
569 | } |
570 | ||
571 | assert(m_local_journal == nullptr); | |
572 | { | |
573 | RWLock::RLocker snap_locker(m_local_image_ctx->snap_lock); | |
574 | if (m_local_image_ctx->journal != nullptr) { | |
575 | m_local_journal = m_local_image_ctx->journal; | |
576 | m_local_journal->add_listener(m_journal_listener); | |
577 | } | |
578 | } | |
579 | ||
580 | if (m_local_journal == nullptr) { | |
581 | on_start_fail(-EINVAL, "error accessing local journal"); | |
582 | return; | |
583 | } | |
584 | ||
3efd9988 | 585 | on_name_changed(); |
7c673cae FG |
586 | |
587 | update_mirror_image_status(false, boost::none); | |
588 | init_remote_journaler(); | |
589 | } | |
590 | ||
591 | template <typename I> | |
592 | void ImageReplayer<I>::init_remote_journaler() { | |
593 | dout(20) << dendl; | |
594 | ||
595 | Context *ctx = create_context_callback< | |
596 | ImageReplayer, &ImageReplayer<I>::handle_init_remote_journaler>(this); | |
597 | m_remote_journaler->init(ctx); | |
598 | } | |
599 | ||
600 | template <typename I> | |
601 | void ImageReplayer<I>::handle_init_remote_journaler(int r) { | |
602 | dout(20) << "r=" << r << dendl; | |
603 | ||
604 | if (r < 0) { | |
605 | derr << "failed to initialize remote journal: " << cpp_strerror(r) << dendl; | |
606 | on_start_fail(r, "error initializing remote journal"); | |
607 | return; | |
608 | } else if (on_start_interrupted()) { | |
609 | return; | |
610 | } | |
611 | ||
612 | m_remote_journaler->add_listener(&m_remote_listener); | |
613 | ||
614 | cls::journal::Client client; | |
615 | r = m_remote_journaler->get_cached_client(m_local_mirror_uuid, &client); | |
616 | if (r < 0) { | |
617 | derr << "error retrieving remote journal client: " << cpp_strerror(r) | |
618 | << dendl; | |
619 | on_start_fail(r, "error retrieving remote journal client"); | |
620 | return; | |
621 | } | |
622 | ||
b32b8144 FG |
623 | dout(5) << "image_id=" << m_local_image_id << ", " |
624 | << "client_meta.image_id=" << m_client_meta.image_id << ", " | |
625 | << "client.state=" << client.state << dendl; | |
d2e6a577 FG |
626 | if (m_client_meta.image_id == m_local_image_id && |
627 | client.state != cls::journal::CLIENT_STATE_CONNECTED) { | |
7c673cae FG |
628 | dout(5) << "client flagged disconnected, stopping image replay" << dendl; |
629 | if (m_local_image_ctx->mirroring_resync_after_disconnect) { | |
d2e6a577 FG |
630 | m_resync_requested = true; |
631 | on_start_fail(-ENOTCONN, "disconnected: automatic resync"); | |
632 | } else { | |
633 | on_start_fail(-ENOTCONN, "disconnected"); | |
7c673cae | 634 | } |
7c673cae FG |
635 | return; |
636 | } | |
637 | ||
638 | start_replay(); | |
639 | } | |
640 | ||
641 | template <typename I> | |
642 | void ImageReplayer<I>::start_replay() { | |
643 | dout(20) << dendl; | |
644 | ||
645 | Context *start_ctx = create_context_callback< | |
646 | ImageReplayer, &ImageReplayer<I>::handle_start_replay>(this); | |
647 | m_local_journal->start_external_replay(&m_local_replay, start_ctx); | |
648 | } | |
649 | ||
650 | template <typename I> | |
651 | void ImageReplayer<I>::handle_start_replay(int r) { | |
652 | dout(20) << "r=" << r << dendl; | |
653 | ||
654 | if (r < 0) { | |
655 | assert(m_local_replay == nullptr); | |
656 | derr << "error starting external replay on local image " | |
657 | << m_local_image_id << ": " << cpp_strerror(r) << dendl; | |
658 | on_start_fail(r, "error starting replay on local image"); | |
659 | return; | |
660 | } | |
661 | ||
662 | Context *on_finish(nullptr); | |
663 | { | |
664 | Mutex::Locker locker(m_lock); | |
665 | assert(m_state == STATE_STARTING); | |
666 | m_state = STATE_REPLAYING; | |
667 | std::swap(m_on_start_finish, on_finish); | |
668 | } | |
669 | ||
670 | m_event_preprocessor = EventPreprocessor<I>::create( | |
671 | *m_local_image_ctx, *m_remote_journaler, m_local_mirror_uuid, | |
672 | &m_client_meta, m_threads->work_queue); | |
673 | m_replay_status_formatter = | |
674 | ReplayStatusFormatter<I>::create(m_remote_journaler, m_local_mirror_uuid); | |
675 | ||
676 | update_mirror_image_status(true, boost::none); | |
677 | reschedule_update_status_task(30); | |
678 | ||
7c673cae FG |
679 | if (on_replay_interrupted()) { |
680 | return; | |
681 | } | |
682 | ||
683 | { | |
684 | CephContext *cct = static_cast<CephContext *>(m_local->cct()); | |
181888fb FG |
685 | double poll_seconds = cct->_conf->get_val<double>( |
686 | "rbd_mirror_journal_poll_age"); | |
7c673cae FG |
687 | |
688 | Mutex::Locker locker(m_lock); | |
689 | m_replay_handler = new ReplayHandler<I>(this); | |
690 | m_remote_journaler->start_live_replay(m_replay_handler, poll_seconds); | |
691 | ||
692 | dout(20) << "m_remote_journaler=" << *m_remote_journaler << dendl; | |
693 | } | |
694 | ||
d2e6a577 FG |
695 | dout(20) << "start succeeded" << dendl; |
696 | if (on_finish != nullptr) { | |
697 | dout(20) << "on finish complete, r=" << r << dendl; | |
698 | on_finish->complete(r); | |
699 | } | |
7c673cae FG |
700 | } |
701 | ||
702 | template <typename I> | |
703 | void ImageReplayer<I>::on_start_fail(int r, const std::string &desc) | |
704 | { | |
705 | dout(20) << "r=" << r << dendl; | |
706 | Context *ctx = new FunctionContext([this, r, desc](int _r) { | |
707 | { | |
708 | Mutex::Locker locker(m_lock); | |
709 | assert(m_state == STATE_STARTING); | |
710 | m_state = STATE_STOPPING; | |
d2e6a577 | 711 | if (r < 0 && r != -ECANCELED && r != -EREMOTEIO && r != -ENOENT) { |
7c673cae FG |
712 | derr << "start failed: " << cpp_strerror(r) << dendl; |
713 | } else { | |
714 | dout(20) << "start canceled" << dendl; | |
715 | } | |
716 | } | |
717 | ||
718 | set_state_description(r, desc); | |
719 | update_mirror_image_status(false, boost::none); | |
720 | reschedule_update_status_task(-1); | |
721 | shut_down(r); | |
722 | }); | |
723 | m_threads->work_queue->queue(ctx, 0); | |
724 | } | |
725 | ||
726 | template <typename I> | |
727 | bool ImageReplayer<I>::on_start_interrupted() | |
728 | { | |
729 | Mutex::Locker locker(m_lock); | |
730 | assert(m_state == STATE_STARTING); | |
731 | if (m_on_stop_finish == nullptr) { | |
732 | return false; | |
733 | } | |
734 | ||
735 | on_start_fail(-ECANCELED); | |
736 | return true; | |
737 | } | |
738 | ||
739 | template <typename I> | |
740 | void ImageReplayer<I>::stop(Context *on_finish, bool manual, int r, | |
741 | const std::string& desc) | |
742 | { | |
743 | dout(20) << "on_finish=" << on_finish << ", manual=" << manual | |
744 | << ", desc=" << desc << dendl; | |
745 | ||
d2e6a577 FG |
746 | m_image_deleter->cancel_waiter(m_local_pool_id, m_global_image_id); |
747 | ||
7c673cae FG |
748 | image_replayer::BootstrapRequest<I> *bootstrap_request = nullptr; |
749 | bool shut_down_replay = false; | |
750 | bool running = true; | |
7c673cae FG |
751 | { |
752 | Mutex::Locker locker(m_lock); | |
753 | ||
754 | if (!is_running_()) { | |
755 | running = false; | |
756 | } else { | |
757 | if (!is_stopped_()) { | |
758 | if (m_state == STATE_STARTING) { | |
759 | dout(20) << "canceling start" << dendl; | |
760 | if (m_bootstrap_request) { | |
761 | bootstrap_request = m_bootstrap_request; | |
762 | bootstrap_request->get(); | |
763 | } | |
764 | } else { | |
765 | dout(20) << "interrupting replay" << dendl; | |
766 | shut_down_replay = true; | |
767 | } | |
768 | ||
769 | assert(m_on_stop_finish == nullptr); | |
770 | std::swap(m_on_stop_finish, on_finish); | |
771 | m_stop_requested = true; | |
772 | m_manual_stop = manual; | |
7c673cae FG |
773 | } |
774 | } | |
775 | } | |
776 | ||
777 | // avoid holding lock since bootstrap request will update status | |
778 | if (bootstrap_request != nullptr) { | |
779 | bootstrap_request->cancel(); | |
780 | bootstrap_request->put(); | |
781 | } | |
782 | ||
7c673cae FG |
783 | if (!running) { |
784 | dout(20) << "not running" << dendl; | |
785 | if (on_finish) { | |
786 | on_finish->complete(-EINVAL); | |
787 | } | |
788 | return; | |
789 | } | |
790 | ||
791 | if (shut_down_replay) { | |
792 | on_stop_journal_replay(r, desc); | |
793 | } else if (on_finish != nullptr) { | |
794 | on_finish->complete(0); | |
795 | } | |
796 | } | |
797 | ||
798 | template <typename I> | |
799 | void ImageReplayer<I>::on_stop_journal_replay(int r, const std::string &desc) | |
800 | { | |
801 | dout(20) << "enter" << dendl; | |
802 | ||
803 | { | |
804 | Mutex::Locker locker(m_lock); | |
805 | if (m_state != STATE_REPLAYING) { | |
806 | // might be invoked multiple times while stopping | |
807 | return; | |
808 | } | |
809 | m_stop_requested = true; | |
810 | m_state = STATE_STOPPING; | |
811 | } | |
812 | ||
813 | set_state_description(r, desc); | |
814 | update_mirror_image_status(false, boost::none); | |
815 | reschedule_update_status_task(-1); | |
816 | shut_down(0); | |
817 | } | |
818 | ||
819 | template <typename I> | |
820 | void ImageReplayer<I>::handle_replay_ready() | |
821 | { | |
822 | dout(20) << "enter" << dendl; | |
823 | if (on_replay_interrupted()) { | |
824 | return; | |
825 | } | |
826 | ||
827 | if (!m_remote_journaler->try_pop_front(&m_replay_entry, &m_replay_tag_tid)) { | |
828 | return; | |
829 | } | |
830 | ||
831 | m_event_replay_tracker.start_op(); | |
31f18b77 FG |
832 | |
833 | m_lock.Lock(); | |
834 | bool stopping = (m_state == STATE_STOPPING); | |
835 | m_lock.Unlock(); | |
836 | ||
837 | if (stopping) { | |
838 | dout(10) << "stopping event replay" << dendl; | |
839 | m_event_replay_tracker.finish_op(); | |
840 | return; | |
841 | } | |
842 | ||
7c673cae FG |
843 | if (m_replay_tag_valid && m_replay_tag.tid == m_replay_tag_tid) { |
844 | preprocess_entry(); | |
845 | return; | |
846 | } | |
847 | ||
848 | replay_flush(); | |
849 | } | |
850 | ||
851 | template <typename I> | |
852 | void ImageReplayer<I>::restart(Context *on_finish) | |
853 | { | |
854 | FunctionContext *ctx = new FunctionContext( | |
855 | [this, on_finish](int r) { | |
856 | if (r < 0) { | |
857 | // Try start anyway. | |
858 | } | |
859 | start(on_finish, true); | |
860 | }); | |
861 | stop(ctx); | |
862 | } | |
863 | ||
864 | template <typename I> | |
865 | void ImageReplayer<I>::flush(Context *on_finish) | |
866 | { | |
867 | dout(20) << "enter" << dendl; | |
868 | ||
869 | { | |
870 | Mutex::Locker locker(m_lock); | |
871 | if (m_state == STATE_REPLAYING) { | |
872 | Context *ctx = new FunctionContext( | |
873 | [on_finish](int r) { | |
874 | if (on_finish != nullptr) { | |
875 | on_finish->complete(r); | |
876 | } | |
877 | }); | |
878 | on_flush_local_replay_flush_start(ctx); | |
879 | return; | |
880 | } | |
881 | } | |
882 | ||
883 | if (on_finish) { | |
884 | on_finish->complete(0); | |
885 | } | |
886 | } | |
887 | ||
888 | template <typename I> | |
889 | void ImageReplayer<I>::on_flush_local_replay_flush_start(Context *on_flush) | |
890 | { | |
891 | dout(20) << "enter" << dendl; | |
892 | FunctionContext *ctx = new FunctionContext( | |
893 | [this, on_flush](int r) { | |
894 | on_flush_local_replay_flush_finish(on_flush, r); | |
895 | }); | |
896 | ||
897 | assert(m_lock.is_locked()); | |
898 | assert(m_state == STATE_REPLAYING); | |
899 | m_local_replay->flush(ctx); | |
900 | } | |
901 | ||
902 | template <typename I> | |
903 | void ImageReplayer<I>::on_flush_local_replay_flush_finish(Context *on_flush, | |
904 | int r) | |
905 | { | |
906 | dout(20) << "r=" << r << dendl; | |
907 | if (r < 0) { | |
908 | derr << "error flushing local replay: " << cpp_strerror(r) << dendl; | |
909 | on_flush->complete(r); | |
910 | return; | |
911 | } | |
912 | ||
913 | on_flush_flush_commit_position_start(on_flush); | |
914 | } | |
915 | ||
916 | template <typename I> | |
917 | void ImageReplayer<I>::on_flush_flush_commit_position_start(Context *on_flush) | |
918 | { | |
919 | FunctionContext *ctx = new FunctionContext( | |
920 | [this, on_flush](int r) { | |
921 | on_flush_flush_commit_position_finish(on_flush, r); | |
922 | }); | |
923 | ||
924 | m_remote_journaler->flush_commit_position(ctx); | |
925 | } | |
926 | ||
927 | template <typename I> | |
928 | void ImageReplayer<I>::on_flush_flush_commit_position_finish(Context *on_flush, | |
929 | int r) | |
930 | { | |
931 | if (r < 0) { | |
932 | derr << "error flushing remote journal commit position: " | |
933 | << cpp_strerror(r) << dendl; | |
934 | } | |
935 | ||
936 | update_mirror_image_status(false, boost::none); | |
937 | ||
938 | dout(20) << "flush complete, r=" << r << dendl; | |
939 | on_flush->complete(r); | |
940 | } | |
941 | ||
942 | template <typename I> | |
943 | bool ImageReplayer<I>::on_replay_interrupted() | |
944 | { | |
945 | bool shut_down; | |
946 | { | |
947 | Mutex::Locker locker(m_lock); | |
948 | shut_down = m_stop_requested; | |
949 | } | |
950 | ||
951 | if (shut_down) { | |
952 | on_stop_journal_replay(); | |
953 | } | |
954 | return shut_down; | |
955 | } | |
956 | ||
957 | template <typename I> | |
958 | void ImageReplayer<I>::print_status(Formatter *f, stringstream *ss) | |
959 | { | |
960 | dout(20) << "enter" << dendl; | |
961 | ||
962 | Mutex::Locker l(m_lock); | |
963 | ||
964 | if (f) { | |
965 | f->open_object_section("image_replayer"); | |
966 | f->dump_string("name", m_name); | |
967 | f->dump_string("state", to_string(m_state)); | |
968 | f->close_section(); | |
969 | f->flush(*ss); | |
970 | } else { | |
971 | *ss << m_name << ": state: " << to_string(m_state); | |
972 | } | |
973 | } | |
974 | ||
975 | template <typename I> | |
976 | void ImageReplayer<I>::handle_replay_complete(int r, const std::string &error_desc) | |
977 | { | |
978 | dout(20) << "r=" << r << dendl; | |
979 | if (r < 0) { | |
980 | derr << "replay encountered an error: " << cpp_strerror(r) << dendl; | |
981 | set_state_description(r, error_desc); | |
982 | } | |
983 | ||
984 | { | |
985 | Mutex::Locker locker(m_lock); | |
986 | m_stop_requested = true; | |
987 | } | |
988 | on_replay_interrupted(); | |
989 | } | |
990 | ||
991 | template <typename I> | |
992 | void ImageReplayer<I>::replay_flush() { | |
993 | dout(20) << dendl; | |
994 | ||
995 | bool interrupted = false; | |
996 | { | |
997 | Mutex::Locker locker(m_lock); | |
998 | if (m_state != STATE_REPLAYING) { | |
999 | dout(20) << "replay interrupted" << dendl; | |
1000 | interrupted = true; | |
1001 | } else { | |
1002 | m_state = STATE_REPLAY_FLUSHING; | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | if (interrupted) { | |
1007 | m_event_replay_tracker.finish_op(); | |
1008 | return; | |
1009 | } | |
1010 | ||
1011 | // shut down the replay to flush all IO and ops and create a new | |
1012 | // replayer to handle the new tag epoch | |
1013 | Context *ctx = create_context_callback< | |
1014 | ImageReplayer<I>, &ImageReplayer<I>::handle_replay_flush>(this); | |
1015 | ctx = new FunctionContext([this, ctx](int r) { | |
1016 | m_local_image_ctx->journal->stop_external_replay(); | |
1017 | m_local_replay = nullptr; | |
1018 | ||
1019 | if (r < 0) { | |
1020 | ctx->complete(r); | |
1021 | return; | |
1022 | } | |
1023 | ||
1024 | m_local_journal->start_external_replay(&m_local_replay, ctx); | |
1025 | }); | |
1026 | m_local_replay->shut_down(false, ctx); | |
1027 | } | |
1028 | ||
1029 | template <typename I> | |
1030 | void ImageReplayer<I>::handle_replay_flush(int r) { | |
1031 | dout(20) << "r=" << r << dendl; | |
1032 | ||
1033 | { | |
1034 | Mutex::Locker locker(m_lock); | |
1035 | assert(m_state == STATE_REPLAY_FLUSHING); | |
1036 | m_state = STATE_REPLAYING; | |
1037 | } | |
1038 | ||
1039 | if (r < 0) { | |
1040 | derr << "replay flush encountered an error: " << cpp_strerror(r) << dendl; | |
1041 | m_event_replay_tracker.finish_op(); | |
1042 | handle_replay_complete(r, "replay flush encountered an error"); | |
1043 | return; | |
1044 | } else if (on_replay_interrupted()) { | |
1045 | m_event_replay_tracker.finish_op(); | |
1046 | return; | |
1047 | } | |
1048 | ||
1049 | get_remote_tag(); | |
1050 | } | |
1051 | ||
1052 | template <typename I> | |
1053 | void ImageReplayer<I>::get_remote_tag() { | |
1054 | dout(20) << "tag_tid: " << m_replay_tag_tid << dendl; | |
1055 | ||
1056 | Context *ctx = create_context_callback< | |
1057 | ImageReplayer, &ImageReplayer<I>::handle_get_remote_tag>(this); | |
1058 | m_remote_journaler->get_tag(m_replay_tag_tid, &m_replay_tag, ctx); | |
1059 | } | |
1060 | ||
1061 | template <typename I> | |
1062 | void ImageReplayer<I>::handle_get_remote_tag(int r) { | |
1063 | dout(20) << "r=" << r << dendl; | |
1064 | ||
1065 | if (r == 0) { | |
1066 | try { | |
1067 | bufferlist::iterator it = m_replay_tag.data.begin(); | |
1068 | ::decode(m_replay_tag_data, it); | |
1069 | } catch (const buffer::error &err) { | |
1070 | r = -EBADMSG; | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | if (r < 0) { | |
1075 | derr << "failed to retrieve remote tag " << m_replay_tag_tid << ": " | |
1076 | << cpp_strerror(r) << dendl; | |
1077 | m_event_replay_tracker.finish_op(); | |
1078 | handle_replay_complete(r, "failed to retrieve remote tag"); | |
1079 | return; | |
1080 | } | |
1081 | ||
1082 | m_replay_tag_valid = true; | |
1083 | dout(20) << "decoded remote tag " << m_replay_tag_tid << ": " | |
1084 | << m_replay_tag_data << dendl; | |
1085 | ||
1086 | allocate_local_tag(); | |
1087 | } | |
1088 | ||
1089 | template <typename I> | |
1090 | void ImageReplayer<I>::allocate_local_tag() { | |
1091 | dout(20) << dendl; | |
1092 | ||
1093 | std::string mirror_uuid = m_replay_tag_data.mirror_uuid; | |
1094 | if (mirror_uuid == librbd::Journal<>::LOCAL_MIRROR_UUID || | |
1095 | mirror_uuid == m_local_mirror_uuid) { | |
1096 | mirror_uuid = m_remote_image.mirror_uuid; | |
1097 | } else if (mirror_uuid == librbd::Journal<>::ORPHAN_MIRROR_UUID) { | |
1098 | dout(5) << "encountered image demotion: stopping" << dendl; | |
1099 | Mutex::Locker locker(m_lock); | |
1100 | m_stop_requested = true; | |
1101 | } | |
1102 | ||
1103 | librbd::journal::TagPredecessor predecessor(m_replay_tag_data.predecessor); | |
1104 | if (predecessor.mirror_uuid == librbd::Journal<>::LOCAL_MIRROR_UUID) { | |
1105 | predecessor.mirror_uuid = m_remote_image.mirror_uuid; | |
1106 | } else if (predecessor.mirror_uuid == m_local_mirror_uuid) { | |
1107 | predecessor.mirror_uuid = librbd::Journal<>::LOCAL_MIRROR_UUID; | |
1108 | } | |
1109 | ||
1110 | dout(20) << "mirror_uuid=" << mirror_uuid << ", " | |
1111 | << "predecessor_mirror_uuid=" << predecessor.mirror_uuid << ", " | |
1112 | << "replay_tag_tid=" << m_replay_tag_tid << ", " | |
1113 | << "replay_tag_data=" << m_replay_tag_data << dendl; | |
1114 | Context *ctx = create_context_callback< | |
1115 | ImageReplayer, &ImageReplayer<I>::handle_allocate_local_tag>(this); | |
1116 | m_local_journal->allocate_tag(mirror_uuid, predecessor, ctx); | |
1117 | } | |
1118 | ||
1119 | template <typename I> | |
1120 | void ImageReplayer<I>::handle_allocate_local_tag(int r) { | |
1121 | dout(20) << "r=" << r << dendl; | |
1122 | ||
1123 | if (r < 0) { | |
1124 | derr << "failed to allocate journal tag: " << cpp_strerror(r) << dendl; | |
1125 | m_event_replay_tracker.finish_op(); | |
1126 | handle_replay_complete(r, "failed to allocate journal tag"); | |
1127 | return; | |
1128 | } | |
1129 | ||
1130 | preprocess_entry(); | |
1131 | } | |
1132 | ||
1133 | template <typename I> | |
1134 | void ImageReplayer<I>::preprocess_entry() { | |
1135 | dout(20) << "preprocessing entry tid=" << m_replay_entry.get_commit_tid() | |
1136 | << dendl; | |
1137 | ||
1138 | bufferlist data = m_replay_entry.get_data(); | |
1139 | bufferlist::iterator it = data.begin(); | |
1140 | int r = m_local_replay->decode(&it, &m_event_entry); | |
1141 | if (r < 0) { | |
1142 | derr << "failed to decode journal event" << dendl; | |
1143 | m_event_replay_tracker.finish_op(); | |
1144 | handle_replay_complete(r, "failed to decode journal event"); | |
1145 | return; | |
1146 | } | |
1147 | ||
1148 | uint32_t delay = calculate_replay_delay( | |
1149 | m_event_entry.timestamp, m_local_image_ctx->mirroring_replay_delay); | |
1150 | if (delay == 0) { | |
1151 | handle_preprocess_entry_ready(0); | |
1152 | return; | |
1153 | } | |
1154 | ||
1155 | dout(20) << "delaying replay by " << delay << " sec" << dendl; | |
1156 | ||
1157 | Mutex::Locker timer_locker(m_threads->timer_lock); | |
1158 | assert(m_delayed_preprocess_task == nullptr); | |
1159 | m_delayed_preprocess_task = new FunctionContext( | |
1160 | [this](int r) { | |
1161 | assert(m_threads->timer_lock.is_locked()); | |
1162 | m_delayed_preprocess_task = nullptr; | |
1163 | m_threads->work_queue->queue( | |
1164 | create_context_callback<ImageReplayer, | |
1165 | &ImageReplayer<I>::handle_preprocess_entry_ready>(this), 0); | |
1166 | }); | |
1167 | m_threads->timer->add_event_after(delay, m_delayed_preprocess_task); | |
1168 | } | |
1169 | ||
1170 | template <typename I> | |
1171 | void ImageReplayer<I>::handle_preprocess_entry_ready(int r) { | |
1172 | dout(20) << "r=" << r << dendl; | |
1173 | assert(r == 0); | |
1174 | ||
1175 | if (!m_event_preprocessor->is_required(m_event_entry)) { | |
1176 | process_entry(); | |
1177 | return; | |
1178 | } | |
1179 | ||
1180 | Context *ctx = create_context_callback< | |
1181 | ImageReplayer, &ImageReplayer<I>::handle_preprocess_entry_safe>(this); | |
1182 | m_event_preprocessor->preprocess(&m_event_entry, ctx); | |
1183 | } | |
1184 | ||
1185 | template <typename I> | |
1186 | void ImageReplayer<I>::handle_preprocess_entry_safe(int r) { | |
1187 | dout(20) << "r=" << r << dendl; | |
1188 | ||
1189 | if (r < 0) { | |
7c673cae | 1190 | m_event_replay_tracker.finish_op(); |
31f18b77 FG |
1191 | |
1192 | if (r == -ECANCELED) { | |
1193 | handle_replay_complete(0, "lost exclusive lock"); | |
1194 | } else { | |
1195 | derr << "failed to preprocess journal event" << dendl; | |
1196 | handle_replay_complete(r, "failed to preprocess journal event"); | |
1197 | } | |
7c673cae FG |
1198 | return; |
1199 | } | |
1200 | ||
1201 | process_entry(); | |
1202 | } | |
1203 | ||
1204 | template <typename I> | |
1205 | void ImageReplayer<I>::process_entry() { | |
1206 | dout(20) << "processing entry tid=" << m_replay_entry.get_commit_tid() | |
1207 | << dendl; | |
1208 | ||
1209 | // stop replaying events if stop has been requested | |
1210 | if (on_replay_interrupted()) { | |
1211 | m_event_replay_tracker.finish_op(); | |
1212 | return; | |
1213 | } | |
1214 | ||
1215 | Context *on_ready = create_context_callback< | |
1216 | ImageReplayer, &ImageReplayer<I>::handle_process_entry_ready>(this); | |
1217 | Context *on_commit = new C_ReplayCommitted(this, std::move(m_replay_entry)); | |
1218 | ||
1219 | m_local_replay->process(m_event_entry, on_ready, on_commit); | |
1220 | } | |
1221 | ||
1222 | template <typename I> | |
1223 | void ImageReplayer<I>::handle_process_entry_ready(int r) { | |
1224 | dout(20) << dendl; | |
1225 | assert(r == 0); | |
1226 | ||
3efd9988 FG |
1227 | on_name_changed(); |
1228 | ||
7c673cae FG |
1229 | // attempt to process the next event |
1230 | handle_replay_ready(); | |
1231 | } | |
1232 | ||
1233 | template <typename I> | |
1234 | void ImageReplayer<I>::handle_process_entry_safe(const ReplayEntry& replay_entry, | |
1235 | int r) { | |
1236 | dout(20) << "commit_tid=" << replay_entry.get_commit_tid() << ", r=" << r | |
1237 | << dendl; | |
1238 | ||
1239 | if (r < 0) { | |
1240 | derr << "failed to commit journal event: " << cpp_strerror(r) << dendl; | |
1241 | handle_replay_complete(r, "failed to commit journal event"); | |
1242 | } else { | |
1243 | assert(m_remote_journaler != nullptr); | |
1244 | m_remote_journaler->committed(replay_entry); | |
1245 | } | |
1246 | m_event_replay_tracker.finish_op(); | |
1247 | } | |
1248 | ||
1249 | template <typename I> | |
1250 | bool ImageReplayer<I>::update_mirror_image_status(bool force, | |
1251 | const OptionalState &state) { | |
1252 | dout(20) << dendl; | |
1253 | { | |
1254 | Mutex::Locker locker(m_lock); | |
1255 | if (!start_mirror_image_status_update(force, false)) { | |
1256 | return false; | |
1257 | } | |
1258 | } | |
1259 | ||
1260 | queue_mirror_image_status_update(state); | |
1261 | return true; | |
1262 | } | |
1263 | ||
1264 | template <typename I> | |
1265 | bool ImageReplayer<I>::start_mirror_image_status_update(bool force, | |
1266 | bool restarting) { | |
1267 | assert(m_lock.is_locked()); | |
1268 | ||
1269 | if (!force && !is_stopped_()) { | |
1270 | if (!is_running_()) { | |
1271 | dout(20) << "shut down in-progress: ignoring update" << dendl; | |
1272 | return false; | |
1273 | } else if (m_in_flight_status_updates > (restarting ? 1 : 0)) { | |
1274 | dout(20) << "already sending update" << dendl; | |
1275 | m_update_status_requested = true; | |
1276 | return false; | |
1277 | } | |
1278 | } | |
1279 | ||
1280 | dout(20) << dendl; | |
1281 | ++m_in_flight_status_updates; | |
1282 | return true; | |
1283 | } | |
1284 | ||
1285 | template <typename I> | |
1286 | void ImageReplayer<I>::finish_mirror_image_status_update() { | |
1287 | Context *on_finish = nullptr; | |
1288 | { | |
1289 | Mutex::Locker locker(m_lock); | |
1290 | assert(m_in_flight_status_updates > 0); | |
1291 | if (--m_in_flight_status_updates > 0) { | |
1292 | dout(20) << "waiting on " << m_in_flight_status_updates << " in-flight " | |
1293 | << "updates" << dendl; | |
1294 | return; | |
1295 | } | |
1296 | ||
1297 | std::swap(on_finish, m_on_update_status_finish); | |
1298 | } | |
1299 | ||
1300 | dout(20) << dendl; | |
1301 | if (on_finish != nullptr) { | |
1302 | on_finish->complete(0); | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | template <typename I> | |
1307 | void ImageReplayer<I>::queue_mirror_image_status_update(const OptionalState &state) { | |
1308 | dout(20) << dendl; | |
1309 | FunctionContext *ctx = new FunctionContext( | |
1310 | [this, state](int r) { | |
1311 | send_mirror_status_update(state); | |
1312 | }); | |
1313 | m_threads->work_queue->queue(ctx, 0); | |
1314 | } | |
1315 | ||
1316 | template <typename I> | |
1317 | void ImageReplayer<I>::send_mirror_status_update(const OptionalState &opt_state) { | |
1318 | State state; | |
1319 | std::string state_desc; | |
1320 | int last_r; | |
7c673cae | 1321 | bool stopping_replay; |
c07f9fc5 FG |
1322 | |
1323 | OptionalMirrorImageStatusState mirror_image_status_state{ | |
1324 | boost::make_optional(false, cls::rbd::MirrorImageStatusState{})}; | |
1325 | image_replayer::BootstrapRequest<I>* bootstrap_request = nullptr; | |
7c673cae FG |
1326 | { |
1327 | Mutex::Locker locker(m_lock); | |
1328 | state = m_state; | |
1329 | state_desc = m_state_desc; | |
c07f9fc5 | 1330 | mirror_image_status_state = m_mirror_image_status_state; |
7c673cae | 1331 | last_r = m_last_r; |
7c673cae | 1332 | stopping_replay = (m_local_image_ctx != nullptr); |
c07f9fc5 FG |
1333 | |
1334 | if (m_bootstrap_request != nullptr) { | |
1335 | bootstrap_request = m_bootstrap_request; | |
1336 | bootstrap_request->get(); | |
1337 | } | |
1338 | } | |
1339 | ||
1340 | bool syncing = false; | |
1341 | if (bootstrap_request != nullptr) { | |
1342 | syncing = bootstrap_request->is_syncing(); | |
1343 | bootstrap_request->put(); | |
1344 | bootstrap_request = nullptr; | |
7c673cae FG |
1345 | } |
1346 | ||
1347 | if (opt_state) { | |
1348 | state = *opt_state; | |
1349 | } | |
1350 | ||
1351 | cls::rbd::MirrorImageStatus status; | |
1352 | status.up = true; | |
1353 | switch (state) { | |
1354 | case STATE_STARTING: | |
c07f9fc5 | 1355 | if (syncing) { |
7c673cae FG |
1356 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_SYNCING; |
1357 | status.description = state_desc.empty() ? "syncing" : state_desc; | |
c07f9fc5 | 1358 | mirror_image_status_state = status.state; |
7c673cae FG |
1359 | } else { |
1360 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_STARTING_REPLAY; | |
1361 | status.description = "starting replay"; | |
1362 | } | |
1363 | break; | |
1364 | case STATE_REPLAYING: | |
1365 | case STATE_REPLAY_FLUSHING: | |
1366 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_REPLAYING; | |
1367 | { | |
1368 | Context *on_req_finish = new FunctionContext( | |
1369 | [this](int r) { | |
1370 | dout(20) << "replay status ready: r=" << r << dendl; | |
1371 | if (r >= 0) { | |
1372 | send_mirror_status_update(boost::none); | |
1373 | } else if (r == -EAGAIN) { | |
1374 | // decrement in-flight status update counter | |
1375 | handle_mirror_status_update(r); | |
1376 | } | |
1377 | }); | |
1378 | ||
1379 | std::string desc; | |
1380 | if (!m_replay_status_formatter->get_or_send_update(&desc, | |
1381 | on_req_finish)) { | |
1382 | dout(20) << "waiting for replay status" << dendl; | |
1383 | return; | |
1384 | } | |
1385 | status.description = "replaying, " + desc; | |
c07f9fc5 | 1386 | mirror_image_status_state = boost::none; |
7c673cae FG |
1387 | } |
1388 | break; | |
1389 | case STATE_STOPPING: | |
1390 | if (stopping_replay) { | |
1391 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_STOPPING_REPLAY; | |
1392 | status.description = "stopping replay"; | |
1393 | break; | |
1394 | } | |
1395 | // FALLTHROUGH | |
1396 | case STATE_STOPPED: | |
c07f9fc5 FG |
1397 | if (last_r == -EREMOTEIO) { |
1398 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_UNKNOWN; | |
1399 | status.description = state_desc; | |
1400 | mirror_image_status_state = status.state; | |
1401 | } else if (last_r < 0) { | |
7c673cae FG |
1402 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_ERROR; |
1403 | status.description = state_desc; | |
c07f9fc5 | 1404 | mirror_image_status_state = status.state; |
7c673cae FG |
1405 | } else { |
1406 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_STOPPED; | |
1407 | status.description = state_desc.empty() ? "stopped" : state_desc; | |
c07f9fc5 | 1408 | mirror_image_status_state = boost::none; |
7c673cae FG |
1409 | } |
1410 | break; | |
1411 | default: | |
1412 | assert(!"invalid state"); | |
1413 | } | |
1414 | ||
c07f9fc5 FG |
1415 | { |
1416 | Mutex::Locker locker(m_lock); | |
1417 | m_mirror_image_status_state = mirror_image_status_state; | |
1418 | } | |
1419 | ||
1420 | // prevent the status from ping-ponging when failed replays are restarted | |
1421 | if (mirror_image_status_state && | |
1422 | *mirror_image_status_state == cls::rbd::MIRROR_IMAGE_STATUS_STATE_ERROR) { | |
1423 | status.state = *mirror_image_status_state; | |
1424 | } | |
1425 | ||
7c673cae FG |
1426 | dout(20) << "status=" << status << dendl; |
1427 | librados::ObjectWriteOperation op; | |
1428 | librbd::cls_client::mirror_image_status_set(&op, m_global_image_id, status); | |
1429 | ||
1430 | librados::AioCompletion *aio_comp = create_rados_callback< | |
1431 | ImageReplayer<I>, &ImageReplayer<I>::handle_mirror_status_update>(this); | |
1432 | int r = m_local_ioctx.aio_operate(RBD_MIRRORING, aio_comp, &op); | |
1433 | assert(r == 0); | |
1434 | aio_comp->release(); | |
1435 | } | |
1436 | ||
1437 | template <typename I> | |
1438 | void ImageReplayer<I>::handle_mirror_status_update(int r) { | |
1439 | dout(20) << "r=" << r << dendl; | |
1440 | ||
1441 | bool running = false; | |
1442 | bool started = false; | |
1443 | { | |
1444 | Mutex::Locker locker(m_lock); | |
1445 | bool update_status_requested = false; | |
1446 | std::swap(update_status_requested, m_update_status_requested); | |
1447 | ||
1448 | running = is_running_(); | |
1449 | if (running && update_status_requested) { | |
1450 | started = start_mirror_image_status_update(false, true); | |
1451 | } | |
1452 | } | |
1453 | ||
1454 | // if a deferred update is available, send it -- otherwise reschedule | |
1455 | // the timer task | |
1456 | if (started) { | |
1457 | queue_mirror_image_status_update(boost::none); | |
1458 | } else if (running) { | |
1459 | reschedule_update_status_task(); | |
1460 | } | |
1461 | ||
1462 | // mark committed status update as no longer in-flight | |
1463 | finish_mirror_image_status_update(); | |
1464 | } | |
1465 | ||
1466 | template <typename I> | |
1467 | void ImageReplayer<I>::reschedule_update_status_task(int new_interval) { | |
1468 | dout(20) << dendl; | |
1469 | ||
1470 | bool canceled_task = false; | |
1471 | { | |
1472 | Mutex::Locker locker(m_lock); | |
1473 | Mutex::Locker timer_locker(m_threads->timer_lock); | |
1474 | ||
1475 | if (m_update_status_task) { | |
1476 | canceled_task = m_threads->timer->cancel_event(m_update_status_task); | |
1477 | m_update_status_task = nullptr; | |
1478 | } | |
1479 | ||
1480 | if (new_interval > 0) { | |
1481 | m_update_status_interval = new_interval; | |
1482 | } | |
1483 | ||
1484 | bool restarting = (new_interval == 0 || canceled_task); | |
1485 | if (new_interval >= 0 && is_running_() && | |
1486 | start_mirror_image_status_update(false, restarting)) { | |
1487 | m_update_status_task = new FunctionContext( | |
1488 | [this](int r) { | |
1489 | assert(m_threads->timer_lock.is_locked()); | |
1490 | m_update_status_task = nullptr; | |
1491 | ||
1492 | queue_mirror_image_status_update(boost::none); | |
1493 | }); | |
1494 | m_threads->timer->add_event_after(m_update_status_interval, | |
1495 | m_update_status_task); | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | if (canceled_task) { | |
1500 | dout(20) << "canceled task" << dendl; | |
1501 | finish_mirror_image_status_update(); | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | template <typename I> | |
1506 | void ImageReplayer<I>::shut_down(int r) { | |
1507 | dout(20) << "r=" << r << dendl; | |
3efd9988 FG |
1508 | |
1509 | bool canceled_delayed_preprocess_task = false; | |
1510 | { | |
1511 | Mutex::Locker timer_locker(m_threads->timer_lock); | |
1512 | if (m_delayed_preprocess_task != nullptr) { | |
1513 | canceled_delayed_preprocess_task = m_threads->timer->cancel_event( | |
1514 | m_delayed_preprocess_task); | |
1515 | assert(canceled_delayed_preprocess_task); | |
1516 | m_delayed_preprocess_task = nullptr; | |
1517 | } | |
1518 | } | |
1519 | if (canceled_delayed_preprocess_task) { | |
1520 | // wake up sleeping replay | |
1521 | m_event_replay_tracker.finish_op(); | |
1522 | } | |
1523 | ||
7c673cae FG |
1524 | { |
1525 | Mutex::Locker locker(m_lock); | |
1526 | assert(m_state == STATE_STOPPING); | |
1527 | ||
1528 | // if status updates are in-flight, wait for them to complete | |
1529 | // before proceeding | |
1530 | if (m_in_flight_status_updates > 0) { | |
1531 | if (m_on_update_status_finish == nullptr) { | |
1532 | dout(20) << "waiting for in-flight status update" << dendl; | |
1533 | m_on_update_status_finish = new FunctionContext( | |
1534 | [this, r](int _r) { | |
1535 | shut_down(r); | |
1536 | }); | |
1537 | } | |
1538 | return; | |
1539 | } | |
1540 | } | |
1541 | ||
31f18b77 FG |
1542 | // NOTE: it's important to ensure that the local image is fully |
1543 | // closed before attempting to close the remote journal in | |
1544 | // case the remote cluster is unreachable | |
1545 | ||
7c673cae FG |
1546 | // chain the shut down sequence (reverse order) |
1547 | Context *ctx = new FunctionContext( | |
1548 | [this, r](int _r) { | |
1549 | update_mirror_image_status(true, STATE_STOPPED); | |
1550 | handle_shut_down(r); | |
1551 | }); | |
31f18b77 FG |
1552 | |
1553 | // close the remote journal | |
7c673cae FG |
1554 | if (m_remote_journaler != nullptr) { |
1555 | ctx = new FunctionContext([this, ctx](int r) { | |
1556 | delete m_remote_journaler; | |
1557 | m_remote_journaler = nullptr; | |
1558 | ctx->complete(0); | |
1559 | }); | |
1560 | ctx = new FunctionContext([this, ctx](int r) { | |
1561 | m_remote_journaler->remove_listener(&m_remote_listener); | |
1562 | m_remote_journaler->shut_down(ctx); | |
1563 | }); | |
7c673cae | 1564 | } |
31f18b77 FG |
1565 | |
1566 | // stop the replay of remote journal events | |
1567 | if (m_replay_handler != nullptr) { | |
1568 | ctx = new FunctionContext([this, ctx](int r) { | |
1569 | delete m_replay_handler; | |
1570 | m_replay_handler = nullptr; | |
1571 | ||
1572 | m_event_replay_tracker.wait_for_ops(ctx); | |
1573 | }); | |
1574 | ctx = new FunctionContext([this, ctx](int r) { | |
1575 | m_remote_journaler->stop_replay(ctx); | |
1576 | }); | |
1577 | } | |
1578 | ||
1579 | // close the local image (release exclusive lock) | |
1580 | if (m_local_image_ctx) { | |
1581 | ctx = new FunctionContext([this, ctx](int r) { | |
1582 | CloseImageRequest<I> *request = CloseImageRequest<I>::create( | |
1583 | &m_local_image_ctx, ctx); | |
1584 | request->send(); | |
1585 | }); | |
1586 | } | |
1587 | ||
1588 | // shut down event replay into the local image | |
7c673cae FG |
1589 | if (m_local_journal != nullptr) { |
1590 | ctx = new FunctionContext([this, ctx](int r) { | |
1591 | m_local_journal = nullptr; | |
1592 | ctx->complete(0); | |
1593 | }); | |
1594 | if (m_local_replay != nullptr) { | |
1595 | ctx = new FunctionContext([this, ctx](int r) { | |
1596 | m_local_journal->stop_external_replay(); | |
1597 | m_local_replay = nullptr; | |
1598 | ||
1599 | EventPreprocessor<I>::destroy(m_event_preprocessor); | |
1600 | m_event_preprocessor = nullptr; | |
1601 | ctx->complete(0); | |
1602 | }); | |
1603 | } | |
1604 | ctx = new FunctionContext([this, ctx](int r) { | |
7c673cae FG |
1605 | // blocks if listener notification is in-progress |
1606 | m_local_journal->remove_listener(m_journal_listener); | |
7c673cae FG |
1607 | ctx->complete(0); |
1608 | }); | |
31f18b77 FG |
1609 | } |
1610 | ||
1611 | // wait for all local in-flight replay events to complete | |
1612 | ctx = new FunctionContext([this, ctx](int r) { | |
1613 | if (r < 0) { | |
1614 | derr << "error shutting down journal replay: " << cpp_strerror(r) | |
1615 | << dendl; | |
1616 | } | |
1617 | ||
1618 | m_event_replay_tracker.wait_for_ops(ctx); | |
1619 | }); | |
1620 | ||
1621 | // flush any local in-flight replay events | |
1622 | if (m_local_replay != nullptr) { | |
7c673cae | 1623 | ctx = new FunctionContext([this, ctx](int r) { |
31f18b77 | 1624 | m_local_replay->shut_down(true, ctx); |
7c673cae FG |
1625 | }); |
1626 | } | |
31f18b77 | 1627 | |
7c673cae FG |
1628 | m_threads->work_queue->queue(ctx, 0); |
1629 | } | |
1630 | ||
1631 | template <typename I> | |
1632 | void ImageReplayer<I>::handle_shut_down(int r) { | |
1633 | reschedule_update_status_task(-1); | |
1634 | ||
3efd9988 | 1635 | bool unregister_asok_hook = false; |
7c673cae FG |
1636 | { |
1637 | Mutex::Locker locker(m_lock); | |
1638 | ||
1639 | // if status updates are in-flight, wait for them to complete | |
1640 | // before proceeding | |
1641 | if (m_in_flight_status_updates > 0) { | |
1642 | if (m_on_update_status_finish == nullptr) { | |
1643 | dout(20) << "waiting for in-flight status update" << dendl; | |
1644 | m_on_update_status_finish = new FunctionContext( | |
1645 | [this, r](int _r) { | |
1646 | handle_shut_down(r); | |
1647 | }); | |
1648 | } | |
1649 | return; | |
1650 | } | |
1651 | ||
d2e6a577 FG |
1652 | bool delete_requested = false; |
1653 | if (m_delete_requested && !m_local_image_id.empty()) { | |
1654 | assert(m_remote_image.image_id.empty()); | |
1655 | dout(0) << "remote image no longer exists: scheduling deletion" << dendl; | |
1656 | delete_requested = true; | |
1657 | } | |
1658 | if (delete_requested || m_resync_requested) { | |
7c673cae FG |
1659 | m_image_deleter->schedule_image_delete(m_local, |
1660 | m_local_pool_id, | |
c07f9fc5 | 1661 | m_global_image_id, |
d2e6a577 FG |
1662 | m_resync_requested); |
1663 | ||
1664 | m_local_image_id = ""; | |
1665 | m_resync_requested = false; | |
1666 | if (m_delete_requested) { | |
3efd9988 | 1667 | unregister_asok_hook = true; |
d2e6a577 FG |
1668 | m_delete_requested = false; |
1669 | } | |
1670 | } else if (m_last_r == -ENOENT && | |
1671 | m_local_image_id.empty() && m_remote_image.image_id.empty()) { | |
1672 | dout(0) << "mirror image no longer exists" << dendl; | |
3efd9988 | 1673 | unregister_asok_hook = true; |
d2e6a577 | 1674 | m_finished = true; |
7c673cae FG |
1675 | } |
1676 | } | |
1677 | ||
3efd9988 FG |
1678 | if (unregister_asok_hook) { |
1679 | unregister_admin_socket_hook(); | |
1680 | } | |
1681 | ||
7c673cae FG |
1682 | dout(20) << "stop complete" << dendl; |
1683 | m_local_ioctx.close(); | |
1684 | ||
1685 | ReplayStatusFormatter<I>::destroy(m_replay_status_formatter); | |
1686 | m_replay_status_formatter = nullptr; | |
1687 | ||
1688 | Context *on_start = nullptr; | |
1689 | Context *on_stop = nullptr; | |
1690 | { | |
1691 | Mutex::Locker locker(m_lock); | |
1692 | std::swap(on_start, m_on_start_finish); | |
1693 | std::swap(on_stop, m_on_stop_finish); | |
1694 | m_stop_requested = false; | |
1695 | assert(m_delayed_preprocess_task == nullptr); | |
1696 | assert(m_state == STATE_STOPPING); | |
1697 | m_state = STATE_STOPPED; | |
1698 | } | |
1699 | ||
1700 | if (on_start != nullptr) { | |
1701 | dout(20) << "on start finish complete, r=" << r << dendl; | |
1702 | on_start->complete(r); | |
1703 | r = 0; | |
1704 | } | |
1705 | if (on_stop != nullptr) { | |
1706 | dout(20) << "on stop finish complete, r=" << r << dendl; | |
1707 | on_stop->complete(r); | |
1708 | } | |
1709 | } | |
1710 | ||
1711 | template <typename I> | |
1712 | void ImageReplayer<I>::handle_remote_journal_metadata_updated() { | |
1713 | dout(20) << dendl; | |
1714 | ||
1715 | cls::journal::Client client; | |
1716 | { | |
1717 | Mutex::Locker locker(m_lock); | |
1718 | if (!is_running_()) { | |
1719 | return; | |
1720 | } | |
1721 | ||
1722 | int r = m_remote_journaler->get_cached_client(m_local_mirror_uuid, &client); | |
1723 | if (r < 0) { | |
1724 | derr << "failed to retrieve client: " << cpp_strerror(r) << dendl; | |
1725 | return; | |
1726 | } | |
1727 | } | |
1728 | ||
1729 | if (client.state != cls::journal::CLIENT_STATE_CONNECTED) { | |
1730 | dout(0) << "client flagged disconnected, stopping image replay" << dendl; | |
1731 | stop(nullptr, false, -ENOTCONN, "disconnected"); | |
1732 | } | |
1733 | } | |
1734 | ||
1735 | template <typename I> | |
1736 | std::string ImageReplayer<I>::to_string(const State state) { | |
1737 | switch (state) { | |
1738 | case ImageReplayer<I>::STATE_STARTING: | |
1739 | return "Starting"; | |
1740 | case ImageReplayer<I>::STATE_REPLAYING: | |
1741 | return "Replaying"; | |
1742 | case ImageReplayer<I>::STATE_REPLAY_FLUSHING: | |
1743 | return "ReplayFlushing"; | |
1744 | case ImageReplayer<I>::STATE_STOPPING: | |
1745 | return "Stopping"; | |
1746 | case ImageReplayer<I>::STATE_STOPPED: | |
1747 | return "Stopped"; | |
1748 | default: | |
1749 | break; | |
1750 | } | |
1751 | return "Unknown(" + stringify(state) + ")"; | |
1752 | } | |
1753 | ||
1754 | template <typename I> | |
1755 | void ImageReplayer<I>::resync_image(Context *on_finish) { | |
1756 | dout(20) << dendl; | |
1757 | ||
d2e6a577 FG |
1758 | m_resync_requested = true; |
1759 | stop(on_finish); | |
1760 | } | |
1761 | ||
1762 | template <typename I> | |
1763 | void ImageReplayer<I>::register_admin_socket_hook() { | |
3efd9988 FG |
1764 | ImageReplayerAdminSocketHook<I> *asok_hook; |
1765 | { | |
1766 | Mutex::Locker locker(m_lock); | |
1767 | if (m_asok_hook != nullptr) { | |
1768 | return; | |
1769 | } | |
7c673cae | 1770 | |
3efd9988 FG |
1771 | dout(20) << "registered asok hook: " << m_name << dendl; |
1772 | asok_hook = new ImageReplayerAdminSocketHook<I>(g_ceph_context, m_name, | |
1773 | this); | |
1774 | int r = asok_hook->register_commands(); | |
1775 | if (r == 0) { | |
1776 | m_asok_hook = asok_hook; | |
1777 | return; | |
1778 | } | |
d2e6a577 | 1779 | derr << "error registering admin socket commands" << dendl; |
d2e6a577 | 1780 | } |
3efd9988 | 1781 | delete asok_hook; |
d2e6a577 FG |
1782 | } |
1783 | ||
1784 | template <typename I> | |
1785 | void ImageReplayer<I>::unregister_admin_socket_hook() { | |
1786 | dout(20) << dendl; | |
1787 | ||
3efd9988 FG |
1788 | AdminSocketHook *asok_hook = nullptr; |
1789 | { | |
1790 | Mutex::Locker locker(m_lock); | |
1791 | std::swap(asok_hook, m_asok_hook); | |
1792 | } | |
1793 | delete asok_hook; | |
1794 | } | |
1795 | ||
1796 | template <typename I> | |
1797 | void ImageReplayer<I>::on_name_changed() { | |
1798 | { | |
1799 | Mutex::Locker locker(m_lock); | |
1800 | std::string name = m_local_ioctx.get_pool_name() + "/" + | |
1801 | m_local_image_ctx->name; | |
1802 | if (m_name == name) { | |
1803 | return; | |
1804 | } | |
1805 | m_name = name; | |
1806 | } | |
1807 | unregister_admin_socket_hook(); | |
1808 | register_admin_socket_hook(); | |
7c673cae FG |
1809 | } |
1810 | ||
1811 | template <typename I> | |
1812 | std::ostream &operator<<(std::ostream &os, const ImageReplayer<I> &replayer) | |
1813 | { | |
1814 | os << "ImageReplayer: " << &replayer << " [" << replayer.get_local_pool_id() | |
1815 | << "/" << replayer.get_global_image_id() << "]"; | |
1816 | return os; | |
1817 | } | |
1818 | ||
1819 | } // namespace mirror | |
1820 | } // namespace rbd | |
1821 | ||
1822 | template class rbd::mirror::ImageReplayer<librbd::ImageCtx>; |