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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 { | |
28e407b8 | 152 | this->replayer->flush(); |
7c673cae FG |
153 | return true; |
154 | } | |
7c673cae FG |
155 | }; |
156 | ||
157 | template <typename I> | |
158 | class ImageReplayerAdminSocketHook : public AdminSocketHook { | |
159 | public: | |
160 | ImageReplayerAdminSocketHook(CephContext *cct, const std::string &name, | |
31f18b77 | 161 | ImageReplayer<I> *replayer) |
3efd9988 FG |
162 | : admin_socket(cct->get_admin_socket()), |
163 | commands{{"rbd mirror flush " + name, | |
164 | new FlushCommand<I>("flush rbd mirror " + name, replayer)}, | |
165 | {"rbd mirror restart " + name, | |
166 | new RestartCommand<I>("restart rbd mirror " + name, replayer)}, | |
167 | {"rbd mirror start " + name, | |
168 | new StartCommand<I>("start rbd mirror " + name, replayer)}, | |
169 | {"rbd mirror status " + name, | |
170 | new StatusCommand<I>("get status for rbd mirror " + name, replayer)}, | |
171 | {"rbd mirror stop " + name, | |
172 | new StopCommand<I>("stop rbd mirror " + name, replayer)}} { | |
d2e6a577 FG |
173 | } |
174 | ||
175 | int register_commands() { | |
3efd9988 FG |
176 | for (auto &it : commands) { |
177 | int r = admin_socket->register_command(it.first, it.first, this, | |
178 | it.second->desc); | |
179 | if (r < 0) { | |
180 | return r; | |
181 | } | |
182 | it.second->registered = true; | |
7c673cae | 183 | } |
d2e6a577 | 184 | return 0; |
7c673cae FG |
185 | } |
186 | ||
187 | ~ImageReplayerAdminSocketHook() override { | |
3efd9988 FG |
188 | for (auto &it : commands) { |
189 | if (it.second->registered) { | |
190 | admin_socket->unregister_command(it.first); | |
191 | } | |
192 | delete it.second; | |
7c673cae | 193 | } |
31f18b77 | 194 | commands.clear(); |
7c673cae FG |
195 | } |
196 | ||
197 | bool call(std::string command, cmdmap_t& cmdmap, std::string format, | |
198 | bufferlist& out) override { | |
3efd9988 | 199 | auto i = commands.find(command); |
7c673cae FG |
200 | assert(i != commands.end()); |
201 | Formatter *f = Formatter::create(format); | |
202 | stringstream ss; | |
203 | bool r = i->second->call(f, &ss); | |
204 | delete f; | |
205 | out.append(ss); | |
206 | return r; | |
207 | } | |
208 | ||
209 | private: | |
3efd9988 | 210 | typedef std::map<std::string, ImageReplayerAdminSocketCommand<I> *> Commands; |
7c673cae FG |
211 | |
212 | AdminSocket *admin_socket; | |
213 | Commands commands; | |
214 | }; | |
215 | ||
216 | uint32_t calculate_replay_delay(const utime_t &event_time, | |
217 | int mirroring_replay_delay) { | |
218 | if (mirroring_replay_delay <= 0) { | |
219 | return 0; | |
220 | } | |
221 | ||
222 | utime_t now = ceph_clock_now(); | |
223 | if (event_time + mirroring_replay_delay <= now) { | |
224 | return 0; | |
225 | } | |
226 | ||
227 | // ensure it is rounded up when converting to integer | |
228 | return (event_time + mirroring_replay_delay - now) + 1; | |
229 | } | |
230 | ||
231 | } // anonymous namespace | |
232 | ||
233 | template <typename I> | |
234 | void ImageReplayer<I>::BootstrapProgressContext::update_progress( | |
235 | const std::string &description, bool flush) | |
236 | { | |
237 | const std::string desc = "bootstrapping, " + description; | |
238 | replayer->set_state_description(0, desc); | |
239 | if (flush) { | |
240 | replayer->update_mirror_image_status(false, boost::none); | |
241 | } | |
242 | } | |
243 | ||
244 | template <typename I> | |
245 | void ImageReplayer<I>::RemoteJournalerListener::handle_update( | |
246 | ::journal::JournalMetadata *) { | |
247 | FunctionContext *ctx = new FunctionContext([this](int r) { | |
248 | replayer->handle_remote_journal_metadata_updated(); | |
249 | }); | |
250 | replayer->m_threads->work_queue->queue(ctx, 0); | |
251 | } | |
252 | ||
253 | template <typename I> | |
d2e6a577 | 254 | ImageReplayer<I>::ImageReplayer(Threads<I> *threads, |
c07f9fc5 | 255 | ImageDeleter<I>* image_deleter, |
31f18b77 | 256 | InstanceWatcher<I> *instance_watcher, |
7c673cae FG |
257 | RadosRef local, |
258 | const std::string &local_mirror_uuid, | |
259 | int64_t local_pool_id, | |
260 | const std::string &global_image_id) : | |
261 | m_threads(threads), | |
262 | m_image_deleter(image_deleter), | |
31f18b77 | 263 | m_instance_watcher(instance_watcher), |
7c673cae FG |
264 | m_local(local), |
265 | m_local_mirror_uuid(local_mirror_uuid), | |
266 | m_local_pool_id(local_pool_id), | |
28e407b8 | 267 | m_global_image_id(global_image_id), m_local_image_name(global_image_id), |
7c673cae FG |
268 | m_lock("rbd::mirror::ImageReplayer " + stringify(local_pool_id) + " " + |
269 | global_image_id), | |
270 | m_progress_cxt(this), | |
271 | m_journal_listener(new JournalListener(this)), | |
272 | m_remote_listener(this) | |
273 | { | |
274 | // Register asok commands using a temporary "remote_pool_name/global_image_id" | |
275 | // name. When the image name becomes known on start the asok commands will be | |
276 | // re-registered using "remote_pool_name/remote_image_name" name. | |
277 | ||
278 | std::string pool_name; | |
279 | int r = m_local->pool_reverse_lookup(m_local_pool_id, &pool_name); | |
280 | if (r < 0) { | |
281 | derr << "error resolving local pool " << m_local_pool_id | |
282 | << ": " << cpp_strerror(r) << dendl; | |
283 | pool_name = stringify(m_local_pool_id); | |
284 | } | |
285 | ||
286 | m_name = pool_name + "/" + m_global_image_id; | |
d2e6a577 | 287 | register_admin_socket_hook(); |
7c673cae FG |
288 | } |
289 | ||
290 | template <typename I> | |
291 | ImageReplayer<I>::~ImageReplayer() | |
292 | { | |
d2e6a577 | 293 | unregister_admin_socket_hook(); |
7c673cae FG |
294 | assert(m_event_preprocessor == nullptr); |
295 | assert(m_replay_status_formatter == nullptr); | |
296 | assert(m_local_image_ctx == nullptr); | |
297 | assert(m_local_replay == nullptr); | |
298 | assert(m_remote_journaler == nullptr); | |
299 | assert(m_replay_handler == nullptr); | |
300 | assert(m_on_start_finish == nullptr); | |
301 | assert(m_on_stop_finish == nullptr); | |
302 | assert(m_bootstrap_request == nullptr); | |
303 | assert(m_in_flight_status_updates == 0); | |
304 | ||
305 | delete m_journal_listener; | |
7c673cae FG |
306 | } |
307 | ||
c07f9fc5 FG |
308 | template <typename I> |
309 | image_replayer::HealthState ImageReplayer<I>::get_health_state() const { | |
310 | Mutex::Locker locker(m_lock); | |
311 | ||
312 | if (!m_mirror_image_status_state) { | |
313 | return image_replayer::HEALTH_STATE_OK; | |
314 | } else if (*m_mirror_image_status_state == | |
315 | cls::rbd::MIRROR_IMAGE_STATUS_STATE_SYNCING || | |
316 | *m_mirror_image_status_state == | |
317 | cls::rbd::MIRROR_IMAGE_STATUS_STATE_UNKNOWN) { | |
318 | return image_replayer::HEALTH_STATE_WARNING; | |
319 | } | |
320 | return image_replayer::HEALTH_STATE_ERROR; | |
321 | } | |
322 | ||
7c673cae | 323 | template <typename I> |
d2e6a577 FG |
324 | void ImageReplayer<I>::add_peer(const std::string &peer_uuid, |
325 | librados::IoCtx &io_ctx) { | |
7c673cae | 326 | Mutex::Locker locker(m_lock); |
d2e6a577 FG |
327 | auto it = m_peers.find({peer_uuid}); |
328 | if (it == m_peers.end()) { | |
329 | m_peers.insert({peer_uuid, io_ctx}); | |
7c673cae FG |
330 | } |
331 | } | |
332 | ||
7c673cae FG |
333 | template <typename I> |
334 | void ImageReplayer<I>::set_state_description(int r, const std::string &desc) { | |
335 | dout(20) << r << " " << desc << dendl; | |
336 | ||
337 | Mutex::Locker l(m_lock); | |
338 | m_last_r = r; | |
339 | m_state_desc = desc; | |
340 | } | |
341 | ||
342 | template <typename I> | |
343 | void ImageReplayer<I>::start(Context *on_finish, bool manual) | |
344 | { | |
345 | dout(20) << "on_finish=" << on_finish << dendl; | |
346 | ||
347 | int r = 0; | |
348 | { | |
349 | Mutex::Locker locker(m_lock); | |
350 | if (!is_stopped_()) { | |
351 | derr << "already running" << dendl; | |
352 | r = -EINVAL; | |
353 | } else if (m_manual_stop && !manual) { | |
354 | dout(5) << "stopped manually, ignoring start without manual flag" | |
355 | << dendl; | |
356 | r = -EPERM; | |
357 | } else { | |
358 | m_state = STATE_STARTING; | |
359 | m_last_r = 0; | |
360 | m_state_desc.clear(); | |
361 | m_manual_stop = false; | |
d2e6a577 | 362 | m_delete_requested = false; |
7c673cae FG |
363 | |
364 | if (on_finish != nullptr) { | |
365 | assert(m_on_start_finish == nullptr); | |
366 | m_on_start_finish = on_finish; | |
367 | } | |
368 | assert(m_on_stop_finish == nullptr); | |
369 | } | |
370 | } | |
371 | ||
372 | if (r < 0) { | |
373 | if (on_finish) { | |
374 | on_finish->complete(r); | |
375 | } | |
376 | return; | |
377 | } | |
378 | ||
379 | r = m_local->ioctx_create2(m_local_pool_id, m_local_ioctx); | |
380 | if (r < 0) { | |
381 | derr << "error opening ioctx for local pool " << m_local_pool_id | |
382 | << ": " << cpp_strerror(r) << dendl; | |
383 | on_start_fail(r, "error opening local pool"); | |
384 | return; | |
385 | } | |
386 | ||
d2e6a577 FG |
387 | wait_for_deletion(); |
388 | } | |
389 | ||
390 | template <typename I> | |
391 | void ImageReplayer<I>::wait_for_deletion() { | |
392 | dout(20) << dendl; | |
393 | ||
394 | Context *ctx = create_context_callback< | |
395 | ImageReplayer, &ImageReplayer<I>::handle_wait_for_deletion>(this); | |
396 | m_image_deleter->wait_for_scheduled_deletion( | |
397 | m_local_pool_id, m_global_image_id, ctx, false); | |
398 | } | |
399 | ||
400 | template <typename I> | |
401 | void ImageReplayer<I>::handle_wait_for_deletion(int r) { | |
402 | dout(20) << "r=" << r << dendl; | |
403 | ||
404 | if (r == -ECANCELED) { | |
405 | on_start_fail(0, ""); | |
406 | return; | |
407 | } else if (r < 0) { | |
408 | on_start_fail(r, "error waiting for image deletion"); | |
409 | return; | |
410 | } | |
411 | ||
7c673cae FG |
412 | prepare_local_image(); |
413 | } | |
414 | ||
415 | template <typename I> | |
416 | void ImageReplayer<I>::prepare_local_image() { | |
417 | dout(20) << dendl; | |
418 | ||
d2e6a577 | 419 | m_local_image_id = ""; |
7c673cae FG |
420 | Context *ctx = create_context_callback< |
421 | ImageReplayer, &ImageReplayer<I>::handle_prepare_local_image>(this); | |
422 | auto req = PrepareLocalImageRequest<I>::create( | |
28e407b8 | 423 | m_local_ioctx, m_global_image_id, &m_local_image_id, &m_local_image_name, |
7c673cae FG |
424 | &m_local_image_tag_owner, m_threads->work_queue, ctx); |
425 | req->send(); | |
426 | } | |
427 | ||
428 | template <typename I> | |
429 | void ImageReplayer<I>::handle_prepare_local_image(int r) { | |
430 | dout(20) << "r=" << r << dendl; | |
431 | ||
432 | if (r == -ENOENT) { | |
433 | dout(20) << "local image does not exist" << dendl; | |
434 | } else if (r < 0) { | |
435 | on_start_fail(r, "error preparing local image for replay"); | |
436 | return; | |
28e407b8 AA |
437 | } else { |
438 | reregister_admin_socket_hook(); | |
7c673cae FG |
439 | } |
440 | ||
441 | // local image doesn't exist or is non-primary | |
d2e6a577 | 442 | prepare_remote_image(); |
7c673cae FG |
443 | } |
444 | ||
445 | template <typename I> | |
d2e6a577 | 446 | void ImageReplayer<I>::prepare_remote_image() { |
7c673cae | 447 | dout(20) << dendl; |
b32b8144 FG |
448 | if (m_peers.empty()) { |
449 | // technically nothing to bootstrap, but it handles the status update | |
450 | bootstrap(); | |
451 | return; | |
452 | } | |
7c673cae | 453 | |
d2e6a577 FG |
454 | // TODO need to support multiple remote images |
455 | assert(!m_peers.empty()); | |
456 | m_remote_image = {*m_peers.begin()}; | |
457 | ||
458 | Context *ctx = create_context_callback< | |
459 | ImageReplayer, &ImageReplayer<I>::handle_prepare_remote_image>(this); | |
460 | auto req = PrepareRemoteImageRequest<I>::create( | |
b32b8144 FG |
461 | m_threads, m_remote_image.io_ctx, m_global_image_id, m_local_mirror_uuid, |
462 | m_local_image_id, &m_remote_image.mirror_uuid, &m_remote_image.image_id, | |
463 | &m_remote_journaler, &m_client_state, &m_client_meta, ctx); | |
d2e6a577 FG |
464 | req->send(); |
465 | } | |
466 | ||
467 | template <typename I> | |
468 | void ImageReplayer<I>::handle_prepare_remote_image(int r) { | |
469 | dout(20) << "r=" << r << dendl; | |
470 | ||
b32b8144 FG |
471 | assert(r < 0 ? m_remote_journaler == nullptr : m_remote_journaler != nullptr); |
472 | if (r < 0 && !m_local_image_id.empty() && | |
473 | m_local_image_tag_owner == librbd::Journal<>::LOCAL_MIRROR_UUID) { | |
474 | // local image is primary -- fall-through | |
475 | } else if (r == -ENOENT) { | |
d2e6a577 FG |
476 | dout(20) << "remote image does not exist" << dendl; |
477 | ||
478 | // TODO need to support multiple remote images | |
479 | if (!m_local_image_id.empty() && | |
480 | m_local_image_tag_owner == m_remote_image.mirror_uuid) { | |
481 | // local image exists and is non-primary and linked to the missing | |
482 | // remote image | |
483 | ||
484 | m_delete_requested = true; | |
485 | on_start_fail(0, "remote image no longer exists"); | |
486 | } else { | |
487 | on_start_fail(-ENOENT, "remote image does not exist"); | |
488 | } | |
489 | return; | |
490 | } else if (r < 0) { | |
491 | on_start_fail(r, "error retrieving remote image id"); | |
7c673cae FG |
492 | return; |
493 | } | |
494 | ||
d2e6a577 FG |
495 | bootstrap(); |
496 | } | |
497 | ||
498 | template <typename I> | |
499 | void ImageReplayer<I>::bootstrap() { | |
500 | dout(20) << dendl; | |
7c673cae | 501 | |
b32b8144 FG |
502 | if (!m_local_image_id.empty() && |
503 | m_local_image_tag_owner == librbd::Journal<>::LOCAL_MIRROR_UUID) { | |
504 | dout(5) << "local image is primary" << dendl; | |
505 | on_start_fail(0, "local image is primary"); | |
506 | return; | |
507 | } else if (m_peers.empty()) { | |
508 | dout(5) << "no peer clusters" << dendl; | |
509 | on_start_fail(-ENOENT, "no peer clusters"); | |
510 | return; | |
511 | } | |
7c673cae FG |
512 | |
513 | Context *ctx = create_context_callback< | |
514 | ImageReplayer, &ImageReplayer<I>::handle_bootstrap>(this); | |
515 | ||
516 | BootstrapRequest<I> *request = BootstrapRequest<I>::create( | |
31f18b77 | 517 | m_local_ioctx, m_remote_image.io_ctx, m_instance_watcher, |
7c673cae FG |
518 | &m_local_image_ctx, m_local_image_id, m_remote_image.image_id, |
519 | m_global_image_id, m_threads->work_queue, m_threads->timer, | |
520 | &m_threads->timer_lock, m_local_mirror_uuid, m_remote_image.mirror_uuid, | |
b32b8144 FG |
521 | m_remote_journaler, &m_client_state, &m_client_meta, ctx, |
522 | &m_resync_requested, &m_progress_cxt); | |
7c673cae FG |
523 | |
524 | { | |
525 | Mutex::Locker locker(m_lock); | |
526 | request->get(); | |
527 | m_bootstrap_request = request; | |
528 | } | |
529 | ||
530 | update_mirror_image_status(false, boost::none); | |
531 | reschedule_update_status_task(10); | |
532 | ||
533 | request->send(); | |
534 | } | |
535 | ||
536 | template <typename I> | |
537 | void ImageReplayer<I>::handle_bootstrap(int r) { | |
538 | dout(20) << "r=" << r << dendl; | |
539 | { | |
540 | Mutex::Locker locker(m_lock); | |
541 | m_bootstrap_request->put(); | |
542 | m_bootstrap_request = nullptr; | |
543 | if (m_local_image_ctx) { | |
544 | m_local_image_id = m_local_image_ctx->id; | |
545 | } | |
546 | } | |
547 | ||
548 | if (r == -EREMOTEIO) { | |
549 | m_local_image_tag_owner = ""; | |
c07f9fc5 FG |
550 | dout(5) << "remote image is non-primary" << dendl; |
551 | on_start_fail(-EREMOTEIO, "remote image is non-primary"); | |
7c673cae FG |
552 | return; |
553 | } else if (r == -EEXIST) { | |
554 | m_local_image_tag_owner = ""; | |
555 | on_start_fail(r, "split-brain detected"); | |
556 | return; | |
557 | } else if (r < 0) { | |
558 | on_start_fail(r, "error bootstrapping replay"); | |
559 | return; | |
560 | } else if (on_start_interrupted()) { | |
561 | return; | |
d2e6a577 FG |
562 | } else if (m_resync_requested) { |
563 | on_start_fail(0, "resync requested"); | |
564 | return; | |
7c673cae FG |
565 | } |
566 | ||
567 | assert(m_local_journal == nullptr); | |
568 | { | |
569 | RWLock::RLocker snap_locker(m_local_image_ctx->snap_lock); | |
570 | if (m_local_image_ctx->journal != nullptr) { | |
571 | m_local_journal = m_local_image_ctx->journal; | |
572 | m_local_journal->add_listener(m_journal_listener); | |
573 | } | |
574 | } | |
575 | ||
576 | if (m_local_journal == nullptr) { | |
577 | on_start_fail(-EINVAL, "error accessing local journal"); | |
578 | return; | |
579 | } | |
580 | ||
7c673cae FG |
581 | update_mirror_image_status(false, boost::none); |
582 | init_remote_journaler(); | |
583 | } | |
584 | ||
585 | template <typename I> | |
586 | void ImageReplayer<I>::init_remote_journaler() { | |
587 | dout(20) << dendl; | |
588 | ||
589 | Context *ctx = create_context_callback< | |
590 | ImageReplayer, &ImageReplayer<I>::handle_init_remote_journaler>(this); | |
591 | m_remote_journaler->init(ctx); | |
592 | } | |
593 | ||
594 | template <typename I> | |
595 | void ImageReplayer<I>::handle_init_remote_journaler(int r) { | |
596 | dout(20) << "r=" << r << dendl; | |
597 | ||
598 | if (r < 0) { | |
599 | derr << "failed to initialize remote journal: " << cpp_strerror(r) << dendl; | |
600 | on_start_fail(r, "error initializing remote journal"); | |
601 | return; | |
602 | } else if (on_start_interrupted()) { | |
603 | return; | |
604 | } | |
605 | ||
606 | m_remote_journaler->add_listener(&m_remote_listener); | |
607 | ||
608 | cls::journal::Client client; | |
609 | r = m_remote_journaler->get_cached_client(m_local_mirror_uuid, &client); | |
610 | if (r < 0) { | |
611 | derr << "error retrieving remote journal client: " << cpp_strerror(r) | |
612 | << dendl; | |
613 | on_start_fail(r, "error retrieving remote journal client"); | |
614 | return; | |
615 | } | |
616 | ||
b32b8144 FG |
617 | dout(5) << "image_id=" << m_local_image_id << ", " |
618 | << "client_meta.image_id=" << m_client_meta.image_id << ", " | |
619 | << "client.state=" << client.state << dendl; | |
d2e6a577 FG |
620 | if (m_client_meta.image_id == m_local_image_id && |
621 | client.state != cls::journal::CLIENT_STATE_CONNECTED) { | |
7c673cae FG |
622 | dout(5) << "client flagged disconnected, stopping image replay" << dendl; |
623 | if (m_local_image_ctx->mirroring_resync_after_disconnect) { | |
d2e6a577 FG |
624 | m_resync_requested = true; |
625 | on_start_fail(-ENOTCONN, "disconnected: automatic resync"); | |
626 | } else { | |
627 | on_start_fail(-ENOTCONN, "disconnected"); | |
7c673cae | 628 | } |
7c673cae FG |
629 | return; |
630 | } | |
631 | ||
632 | start_replay(); | |
633 | } | |
634 | ||
635 | template <typename I> | |
636 | void ImageReplayer<I>::start_replay() { | |
637 | dout(20) << dendl; | |
638 | ||
639 | Context *start_ctx = create_context_callback< | |
640 | ImageReplayer, &ImageReplayer<I>::handle_start_replay>(this); | |
641 | m_local_journal->start_external_replay(&m_local_replay, start_ctx); | |
642 | } | |
643 | ||
644 | template <typename I> | |
645 | void ImageReplayer<I>::handle_start_replay(int r) { | |
646 | dout(20) << "r=" << r << dendl; | |
647 | ||
648 | if (r < 0) { | |
649 | assert(m_local_replay == nullptr); | |
650 | derr << "error starting external replay on local image " | |
651 | << m_local_image_id << ": " << cpp_strerror(r) << dendl; | |
652 | on_start_fail(r, "error starting replay on local image"); | |
653 | return; | |
654 | } | |
655 | ||
656 | Context *on_finish(nullptr); | |
657 | { | |
658 | Mutex::Locker locker(m_lock); | |
659 | assert(m_state == STATE_STARTING); | |
660 | m_state = STATE_REPLAYING; | |
661 | std::swap(m_on_start_finish, on_finish); | |
662 | } | |
663 | ||
664 | m_event_preprocessor = EventPreprocessor<I>::create( | |
665 | *m_local_image_ctx, *m_remote_journaler, m_local_mirror_uuid, | |
666 | &m_client_meta, m_threads->work_queue); | |
667 | m_replay_status_formatter = | |
668 | ReplayStatusFormatter<I>::create(m_remote_journaler, m_local_mirror_uuid); | |
669 | ||
670 | update_mirror_image_status(true, boost::none); | |
671 | reschedule_update_status_task(30); | |
672 | ||
7c673cae FG |
673 | if (on_replay_interrupted()) { |
674 | return; | |
675 | } | |
676 | ||
677 | { | |
678 | CephContext *cct = static_cast<CephContext *>(m_local->cct()); | |
181888fb FG |
679 | double poll_seconds = cct->_conf->get_val<double>( |
680 | "rbd_mirror_journal_poll_age"); | |
7c673cae FG |
681 | |
682 | Mutex::Locker locker(m_lock); | |
683 | m_replay_handler = new ReplayHandler<I>(this); | |
684 | m_remote_journaler->start_live_replay(m_replay_handler, poll_seconds); | |
685 | ||
686 | dout(20) << "m_remote_journaler=" << *m_remote_journaler << dendl; | |
687 | } | |
688 | ||
d2e6a577 FG |
689 | dout(20) << "start succeeded" << dendl; |
690 | if (on_finish != nullptr) { | |
691 | dout(20) << "on finish complete, r=" << r << dendl; | |
692 | on_finish->complete(r); | |
693 | } | |
7c673cae FG |
694 | } |
695 | ||
696 | template <typename I> | |
697 | void ImageReplayer<I>::on_start_fail(int r, const std::string &desc) | |
698 | { | |
699 | dout(20) << "r=" << r << dendl; | |
700 | Context *ctx = new FunctionContext([this, r, desc](int _r) { | |
701 | { | |
702 | Mutex::Locker locker(m_lock); | |
703 | assert(m_state == STATE_STARTING); | |
704 | m_state = STATE_STOPPING; | |
d2e6a577 | 705 | if (r < 0 && r != -ECANCELED && r != -EREMOTEIO && r != -ENOENT) { |
7c673cae FG |
706 | derr << "start failed: " << cpp_strerror(r) << dendl; |
707 | } else { | |
708 | dout(20) << "start canceled" << dendl; | |
709 | } | |
710 | } | |
711 | ||
712 | set_state_description(r, desc); | |
713 | update_mirror_image_status(false, boost::none); | |
714 | reschedule_update_status_task(-1); | |
715 | shut_down(r); | |
716 | }); | |
717 | m_threads->work_queue->queue(ctx, 0); | |
718 | } | |
719 | ||
720 | template <typename I> | |
721 | bool ImageReplayer<I>::on_start_interrupted() | |
722 | { | |
723 | Mutex::Locker locker(m_lock); | |
724 | assert(m_state == STATE_STARTING); | |
725 | if (m_on_stop_finish == nullptr) { | |
726 | return false; | |
727 | } | |
728 | ||
729 | on_start_fail(-ECANCELED); | |
730 | return true; | |
731 | } | |
732 | ||
733 | template <typename I> | |
734 | void ImageReplayer<I>::stop(Context *on_finish, bool manual, int r, | |
735 | const std::string& desc) | |
736 | { | |
737 | dout(20) << "on_finish=" << on_finish << ", manual=" << manual | |
738 | << ", desc=" << desc << dendl; | |
739 | ||
d2e6a577 FG |
740 | m_image_deleter->cancel_waiter(m_local_pool_id, m_global_image_id); |
741 | ||
7c673cae FG |
742 | image_replayer::BootstrapRequest<I> *bootstrap_request = nullptr; |
743 | bool shut_down_replay = false; | |
744 | bool running = true; | |
7c673cae FG |
745 | { |
746 | Mutex::Locker locker(m_lock); | |
747 | ||
748 | if (!is_running_()) { | |
749 | running = false; | |
750 | } else { | |
751 | if (!is_stopped_()) { | |
752 | if (m_state == STATE_STARTING) { | |
753 | dout(20) << "canceling start" << dendl; | |
754 | if (m_bootstrap_request) { | |
755 | bootstrap_request = m_bootstrap_request; | |
756 | bootstrap_request->get(); | |
757 | } | |
758 | } else { | |
759 | dout(20) << "interrupting replay" << dendl; | |
760 | shut_down_replay = true; | |
761 | } | |
762 | ||
763 | assert(m_on_stop_finish == nullptr); | |
764 | std::swap(m_on_stop_finish, on_finish); | |
765 | m_stop_requested = true; | |
766 | m_manual_stop = manual; | |
7c673cae FG |
767 | } |
768 | } | |
769 | } | |
770 | ||
771 | // avoid holding lock since bootstrap request will update status | |
772 | if (bootstrap_request != nullptr) { | |
773 | bootstrap_request->cancel(); | |
774 | bootstrap_request->put(); | |
775 | } | |
776 | ||
7c673cae FG |
777 | if (!running) { |
778 | dout(20) << "not running" << dendl; | |
779 | if (on_finish) { | |
780 | on_finish->complete(-EINVAL); | |
781 | } | |
782 | return; | |
783 | } | |
784 | ||
785 | if (shut_down_replay) { | |
786 | on_stop_journal_replay(r, desc); | |
787 | } else if (on_finish != nullptr) { | |
788 | on_finish->complete(0); | |
789 | } | |
790 | } | |
791 | ||
792 | template <typename I> | |
793 | void ImageReplayer<I>::on_stop_journal_replay(int r, const std::string &desc) | |
794 | { | |
795 | dout(20) << "enter" << dendl; | |
796 | ||
797 | { | |
798 | Mutex::Locker locker(m_lock); | |
799 | if (m_state != STATE_REPLAYING) { | |
800 | // might be invoked multiple times while stopping | |
801 | return; | |
802 | } | |
803 | m_stop_requested = true; | |
804 | m_state = STATE_STOPPING; | |
805 | } | |
806 | ||
807 | set_state_description(r, desc); | |
808 | update_mirror_image_status(false, boost::none); | |
809 | reschedule_update_status_task(-1); | |
810 | shut_down(0); | |
811 | } | |
812 | ||
813 | template <typename I> | |
814 | void ImageReplayer<I>::handle_replay_ready() | |
815 | { | |
816 | dout(20) << "enter" << dendl; | |
817 | if (on_replay_interrupted()) { | |
818 | return; | |
819 | } | |
820 | ||
821 | if (!m_remote_journaler->try_pop_front(&m_replay_entry, &m_replay_tag_tid)) { | |
822 | return; | |
823 | } | |
824 | ||
825 | m_event_replay_tracker.start_op(); | |
31f18b77 FG |
826 | |
827 | m_lock.Lock(); | |
828 | bool stopping = (m_state == STATE_STOPPING); | |
829 | m_lock.Unlock(); | |
830 | ||
831 | if (stopping) { | |
832 | dout(10) << "stopping event replay" << dendl; | |
833 | m_event_replay_tracker.finish_op(); | |
834 | return; | |
835 | } | |
836 | ||
7c673cae FG |
837 | if (m_replay_tag_valid && m_replay_tag.tid == m_replay_tag_tid) { |
838 | preprocess_entry(); | |
839 | return; | |
840 | } | |
841 | ||
842 | replay_flush(); | |
843 | } | |
844 | ||
845 | template <typename I> | |
846 | void ImageReplayer<I>::restart(Context *on_finish) | |
847 | { | |
848 | FunctionContext *ctx = new FunctionContext( | |
849 | [this, on_finish](int r) { | |
850 | if (r < 0) { | |
851 | // Try start anyway. | |
852 | } | |
853 | start(on_finish, true); | |
854 | }); | |
855 | stop(ctx); | |
856 | } | |
857 | ||
858 | template <typename I> | |
859 | void ImageReplayer<I>::flush(Context *on_finish) | |
860 | { | |
861 | dout(20) << "enter" << dendl; | |
862 | ||
863 | { | |
864 | Mutex::Locker locker(m_lock); | |
865 | if (m_state == STATE_REPLAYING) { | |
866 | Context *ctx = new FunctionContext( | |
867 | [on_finish](int r) { | |
868 | if (on_finish != nullptr) { | |
869 | on_finish->complete(r); | |
870 | } | |
871 | }); | |
872 | on_flush_local_replay_flush_start(ctx); | |
873 | return; | |
874 | } | |
875 | } | |
876 | ||
877 | if (on_finish) { | |
878 | on_finish->complete(0); | |
879 | } | |
880 | } | |
881 | ||
882 | template <typename I> | |
883 | void ImageReplayer<I>::on_flush_local_replay_flush_start(Context *on_flush) | |
884 | { | |
885 | dout(20) << "enter" << dendl; | |
886 | FunctionContext *ctx = new FunctionContext( | |
887 | [this, on_flush](int r) { | |
888 | on_flush_local_replay_flush_finish(on_flush, r); | |
889 | }); | |
890 | ||
891 | assert(m_lock.is_locked()); | |
892 | assert(m_state == STATE_REPLAYING); | |
893 | m_local_replay->flush(ctx); | |
894 | } | |
895 | ||
896 | template <typename I> | |
897 | void ImageReplayer<I>::on_flush_local_replay_flush_finish(Context *on_flush, | |
898 | int r) | |
899 | { | |
900 | dout(20) << "r=" << r << dendl; | |
901 | if (r < 0) { | |
902 | derr << "error flushing local replay: " << cpp_strerror(r) << dendl; | |
903 | on_flush->complete(r); | |
904 | return; | |
905 | } | |
906 | ||
907 | on_flush_flush_commit_position_start(on_flush); | |
908 | } | |
909 | ||
910 | template <typename I> | |
911 | void ImageReplayer<I>::on_flush_flush_commit_position_start(Context *on_flush) | |
912 | { | |
913 | FunctionContext *ctx = new FunctionContext( | |
914 | [this, on_flush](int r) { | |
915 | on_flush_flush_commit_position_finish(on_flush, r); | |
916 | }); | |
917 | ||
918 | m_remote_journaler->flush_commit_position(ctx); | |
919 | } | |
920 | ||
921 | template <typename I> | |
922 | void ImageReplayer<I>::on_flush_flush_commit_position_finish(Context *on_flush, | |
923 | int r) | |
924 | { | |
925 | if (r < 0) { | |
926 | derr << "error flushing remote journal commit position: " | |
927 | << cpp_strerror(r) << dendl; | |
928 | } | |
929 | ||
930 | update_mirror_image_status(false, boost::none); | |
931 | ||
932 | dout(20) << "flush complete, r=" << r << dendl; | |
933 | on_flush->complete(r); | |
934 | } | |
935 | ||
936 | template <typename I> | |
937 | bool ImageReplayer<I>::on_replay_interrupted() | |
938 | { | |
939 | bool shut_down; | |
940 | { | |
941 | Mutex::Locker locker(m_lock); | |
942 | shut_down = m_stop_requested; | |
943 | } | |
944 | ||
945 | if (shut_down) { | |
946 | on_stop_journal_replay(); | |
947 | } | |
948 | return shut_down; | |
949 | } | |
950 | ||
951 | template <typename I> | |
952 | void ImageReplayer<I>::print_status(Formatter *f, stringstream *ss) | |
953 | { | |
954 | dout(20) << "enter" << dendl; | |
955 | ||
956 | Mutex::Locker l(m_lock); | |
957 | ||
958 | if (f) { | |
959 | f->open_object_section("image_replayer"); | |
960 | f->dump_string("name", m_name); | |
961 | f->dump_string("state", to_string(m_state)); | |
962 | f->close_section(); | |
963 | f->flush(*ss); | |
964 | } else { | |
965 | *ss << m_name << ": state: " << to_string(m_state); | |
966 | } | |
967 | } | |
968 | ||
969 | template <typename I> | |
970 | void ImageReplayer<I>::handle_replay_complete(int r, const std::string &error_desc) | |
971 | { | |
972 | dout(20) << "r=" << r << dendl; | |
973 | if (r < 0) { | |
974 | derr << "replay encountered an error: " << cpp_strerror(r) << dendl; | |
975 | set_state_description(r, error_desc); | |
976 | } | |
977 | ||
978 | { | |
979 | Mutex::Locker locker(m_lock); | |
980 | m_stop_requested = true; | |
981 | } | |
982 | on_replay_interrupted(); | |
983 | } | |
984 | ||
985 | template <typename I> | |
986 | void ImageReplayer<I>::replay_flush() { | |
987 | dout(20) << dendl; | |
988 | ||
989 | bool interrupted = false; | |
990 | { | |
991 | Mutex::Locker locker(m_lock); | |
992 | if (m_state != STATE_REPLAYING) { | |
993 | dout(20) << "replay interrupted" << dendl; | |
994 | interrupted = true; | |
995 | } else { | |
996 | m_state = STATE_REPLAY_FLUSHING; | |
997 | } | |
998 | } | |
999 | ||
1000 | if (interrupted) { | |
1001 | m_event_replay_tracker.finish_op(); | |
1002 | return; | |
1003 | } | |
1004 | ||
1005 | // shut down the replay to flush all IO and ops and create a new | |
1006 | // replayer to handle the new tag epoch | |
1007 | Context *ctx = create_context_callback< | |
1008 | ImageReplayer<I>, &ImageReplayer<I>::handle_replay_flush>(this); | |
1009 | ctx = new FunctionContext([this, ctx](int r) { | |
1010 | m_local_image_ctx->journal->stop_external_replay(); | |
1011 | m_local_replay = nullptr; | |
1012 | ||
1013 | if (r < 0) { | |
1014 | ctx->complete(r); | |
1015 | return; | |
1016 | } | |
1017 | ||
1018 | m_local_journal->start_external_replay(&m_local_replay, ctx); | |
1019 | }); | |
1020 | m_local_replay->shut_down(false, ctx); | |
1021 | } | |
1022 | ||
1023 | template <typename I> | |
1024 | void ImageReplayer<I>::handle_replay_flush(int r) { | |
1025 | dout(20) << "r=" << r << dendl; | |
1026 | ||
1027 | { | |
1028 | Mutex::Locker locker(m_lock); | |
1029 | assert(m_state == STATE_REPLAY_FLUSHING); | |
1030 | m_state = STATE_REPLAYING; | |
1031 | } | |
1032 | ||
1033 | if (r < 0) { | |
1034 | derr << "replay flush encountered an error: " << cpp_strerror(r) << dendl; | |
1035 | m_event_replay_tracker.finish_op(); | |
1036 | handle_replay_complete(r, "replay flush encountered an error"); | |
1037 | return; | |
1038 | } else if (on_replay_interrupted()) { | |
1039 | m_event_replay_tracker.finish_op(); | |
1040 | return; | |
1041 | } | |
1042 | ||
1043 | get_remote_tag(); | |
1044 | } | |
1045 | ||
1046 | template <typename I> | |
1047 | void ImageReplayer<I>::get_remote_tag() { | |
1048 | dout(20) << "tag_tid: " << m_replay_tag_tid << dendl; | |
1049 | ||
1050 | Context *ctx = create_context_callback< | |
1051 | ImageReplayer, &ImageReplayer<I>::handle_get_remote_tag>(this); | |
1052 | m_remote_journaler->get_tag(m_replay_tag_tid, &m_replay_tag, ctx); | |
1053 | } | |
1054 | ||
1055 | template <typename I> | |
1056 | void ImageReplayer<I>::handle_get_remote_tag(int r) { | |
1057 | dout(20) << "r=" << r << dendl; | |
1058 | ||
1059 | if (r == 0) { | |
1060 | try { | |
1061 | bufferlist::iterator it = m_replay_tag.data.begin(); | |
1062 | ::decode(m_replay_tag_data, it); | |
1063 | } catch (const buffer::error &err) { | |
1064 | r = -EBADMSG; | |
1065 | } | |
1066 | } | |
1067 | ||
1068 | if (r < 0) { | |
1069 | derr << "failed to retrieve remote tag " << m_replay_tag_tid << ": " | |
1070 | << cpp_strerror(r) << dendl; | |
1071 | m_event_replay_tracker.finish_op(); | |
1072 | handle_replay_complete(r, "failed to retrieve remote tag"); | |
1073 | return; | |
1074 | } | |
1075 | ||
1076 | m_replay_tag_valid = true; | |
1077 | dout(20) << "decoded remote tag " << m_replay_tag_tid << ": " | |
1078 | << m_replay_tag_data << dendl; | |
1079 | ||
1080 | allocate_local_tag(); | |
1081 | } | |
1082 | ||
1083 | template <typename I> | |
1084 | void ImageReplayer<I>::allocate_local_tag() { | |
28e407b8 | 1085 | dout(15) << dendl; |
7c673cae FG |
1086 | |
1087 | std::string mirror_uuid = m_replay_tag_data.mirror_uuid; | |
28e407b8 | 1088 | if (mirror_uuid == librbd::Journal<>::LOCAL_MIRROR_UUID) { |
7c673cae | 1089 | mirror_uuid = m_remote_image.mirror_uuid; |
28e407b8 AA |
1090 | } else if (mirror_uuid == m_local_mirror_uuid) { |
1091 | mirror_uuid = librbd::Journal<>::LOCAL_MIRROR_UUID; | |
7c673cae | 1092 | } else if (mirror_uuid == librbd::Journal<>::ORPHAN_MIRROR_UUID) { |
28e407b8 AA |
1093 | // handle possible edge condition where daemon can failover and |
1094 | // the local image has already been promoted/demoted | |
1095 | auto local_tag_data = m_local_journal->get_tag_data(); | |
1096 | if (local_tag_data.mirror_uuid == librbd::Journal<>::ORPHAN_MIRROR_UUID && | |
1097 | (local_tag_data.predecessor.commit_valid && | |
1098 | local_tag_data.predecessor.mirror_uuid == | |
1099 | librbd::Journal<>::LOCAL_MIRROR_UUID)) { | |
1100 | dout(15) << "skipping stale demotion event" << dendl; | |
1101 | handle_process_entry_safe(m_replay_entry, 0); | |
1102 | handle_replay_ready(); | |
1103 | return; | |
1104 | } else { | |
1105 | dout(5) << "encountered image demotion: stopping" << dendl; | |
1106 | Mutex::Locker locker(m_lock); | |
1107 | m_stop_requested = true; | |
1108 | } | |
7c673cae FG |
1109 | } |
1110 | ||
1111 | librbd::journal::TagPredecessor predecessor(m_replay_tag_data.predecessor); | |
1112 | if (predecessor.mirror_uuid == librbd::Journal<>::LOCAL_MIRROR_UUID) { | |
1113 | predecessor.mirror_uuid = m_remote_image.mirror_uuid; | |
1114 | } else if (predecessor.mirror_uuid == m_local_mirror_uuid) { | |
1115 | predecessor.mirror_uuid = librbd::Journal<>::LOCAL_MIRROR_UUID; | |
1116 | } | |
1117 | ||
28e407b8 AA |
1118 | dout(15) << "mirror_uuid=" << mirror_uuid << ", " |
1119 | << "predecessor=" << predecessor << ", " | |
1120 | << "replay_tag_tid=" << m_replay_tag_tid << dendl; | |
7c673cae FG |
1121 | Context *ctx = create_context_callback< |
1122 | ImageReplayer, &ImageReplayer<I>::handle_allocate_local_tag>(this); | |
1123 | m_local_journal->allocate_tag(mirror_uuid, predecessor, ctx); | |
1124 | } | |
1125 | ||
1126 | template <typename I> | |
1127 | void ImageReplayer<I>::handle_allocate_local_tag(int r) { | |
28e407b8 AA |
1128 | dout(15) << "r=" << r << ", " |
1129 | << "tag_tid=" << m_local_journal->get_tag_tid() << dendl; | |
7c673cae FG |
1130 | |
1131 | if (r < 0) { | |
1132 | derr << "failed to allocate journal tag: " << cpp_strerror(r) << dendl; | |
1133 | m_event_replay_tracker.finish_op(); | |
1134 | handle_replay_complete(r, "failed to allocate journal tag"); | |
1135 | return; | |
1136 | } | |
1137 | ||
1138 | preprocess_entry(); | |
1139 | } | |
1140 | ||
1141 | template <typename I> | |
1142 | void ImageReplayer<I>::preprocess_entry() { | |
1143 | dout(20) << "preprocessing entry tid=" << m_replay_entry.get_commit_tid() | |
1144 | << dendl; | |
1145 | ||
1146 | bufferlist data = m_replay_entry.get_data(); | |
1147 | bufferlist::iterator it = data.begin(); | |
1148 | int r = m_local_replay->decode(&it, &m_event_entry); | |
1149 | if (r < 0) { | |
1150 | derr << "failed to decode journal event" << dendl; | |
1151 | m_event_replay_tracker.finish_op(); | |
1152 | handle_replay_complete(r, "failed to decode journal event"); | |
1153 | return; | |
1154 | } | |
1155 | ||
1156 | uint32_t delay = calculate_replay_delay( | |
1157 | m_event_entry.timestamp, m_local_image_ctx->mirroring_replay_delay); | |
1158 | if (delay == 0) { | |
1159 | handle_preprocess_entry_ready(0); | |
1160 | return; | |
1161 | } | |
1162 | ||
1163 | dout(20) << "delaying replay by " << delay << " sec" << dendl; | |
1164 | ||
1165 | Mutex::Locker timer_locker(m_threads->timer_lock); | |
1166 | assert(m_delayed_preprocess_task == nullptr); | |
1167 | m_delayed_preprocess_task = new FunctionContext( | |
1168 | [this](int r) { | |
1169 | assert(m_threads->timer_lock.is_locked()); | |
1170 | m_delayed_preprocess_task = nullptr; | |
1171 | m_threads->work_queue->queue( | |
1172 | create_context_callback<ImageReplayer, | |
1173 | &ImageReplayer<I>::handle_preprocess_entry_ready>(this), 0); | |
1174 | }); | |
1175 | m_threads->timer->add_event_after(delay, m_delayed_preprocess_task); | |
1176 | } | |
1177 | ||
1178 | template <typename I> | |
1179 | void ImageReplayer<I>::handle_preprocess_entry_ready(int r) { | |
1180 | dout(20) << "r=" << r << dendl; | |
1181 | assert(r == 0); | |
1182 | ||
1183 | if (!m_event_preprocessor->is_required(m_event_entry)) { | |
1184 | process_entry(); | |
1185 | return; | |
1186 | } | |
1187 | ||
1188 | Context *ctx = create_context_callback< | |
1189 | ImageReplayer, &ImageReplayer<I>::handle_preprocess_entry_safe>(this); | |
1190 | m_event_preprocessor->preprocess(&m_event_entry, ctx); | |
1191 | } | |
1192 | ||
1193 | template <typename I> | |
1194 | void ImageReplayer<I>::handle_preprocess_entry_safe(int r) { | |
1195 | dout(20) << "r=" << r << dendl; | |
1196 | ||
1197 | if (r < 0) { | |
7c673cae | 1198 | m_event_replay_tracker.finish_op(); |
31f18b77 FG |
1199 | |
1200 | if (r == -ECANCELED) { | |
1201 | handle_replay_complete(0, "lost exclusive lock"); | |
1202 | } else { | |
1203 | derr << "failed to preprocess journal event" << dendl; | |
1204 | handle_replay_complete(r, "failed to preprocess journal event"); | |
1205 | } | |
7c673cae FG |
1206 | return; |
1207 | } | |
1208 | ||
1209 | process_entry(); | |
1210 | } | |
1211 | ||
1212 | template <typename I> | |
1213 | void ImageReplayer<I>::process_entry() { | |
1214 | dout(20) << "processing entry tid=" << m_replay_entry.get_commit_tid() | |
1215 | << dendl; | |
1216 | ||
1217 | // stop replaying events if stop has been requested | |
1218 | if (on_replay_interrupted()) { | |
1219 | m_event_replay_tracker.finish_op(); | |
1220 | return; | |
1221 | } | |
1222 | ||
1223 | Context *on_ready = create_context_callback< | |
1224 | ImageReplayer, &ImageReplayer<I>::handle_process_entry_ready>(this); | |
1225 | Context *on_commit = new C_ReplayCommitted(this, std::move(m_replay_entry)); | |
1226 | ||
1227 | m_local_replay->process(m_event_entry, on_ready, on_commit); | |
1228 | } | |
1229 | ||
1230 | template <typename I> | |
1231 | void ImageReplayer<I>::handle_process_entry_ready(int r) { | |
1232 | dout(20) << dendl; | |
1233 | assert(r == 0); | |
1234 | ||
28e407b8 AA |
1235 | bool update_status = false; |
1236 | { | |
1237 | RWLock::RLocker snap_locker(m_local_image_ctx->snap_lock); | |
1238 | if (m_local_image_name != m_local_image_ctx->name) { | |
1239 | m_local_image_name = m_local_image_ctx->name; | |
1240 | update_status = true; | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | if (update_status) { | |
1245 | reschedule_update_status_task(0); | |
1246 | } | |
3efd9988 | 1247 | |
7c673cae FG |
1248 | // attempt to process the next event |
1249 | handle_replay_ready(); | |
1250 | } | |
1251 | ||
1252 | template <typename I> | |
1253 | void ImageReplayer<I>::handle_process_entry_safe(const ReplayEntry& replay_entry, | |
1254 | int r) { | |
1255 | dout(20) << "commit_tid=" << replay_entry.get_commit_tid() << ", r=" << r | |
1256 | << dendl; | |
1257 | ||
1258 | if (r < 0) { | |
1259 | derr << "failed to commit journal event: " << cpp_strerror(r) << dendl; | |
1260 | handle_replay_complete(r, "failed to commit journal event"); | |
1261 | } else { | |
1262 | assert(m_remote_journaler != nullptr); | |
1263 | m_remote_journaler->committed(replay_entry); | |
1264 | } | |
1265 | m_event_replay_tracker.finish_op(); | |
1266 | } | |
1267 | ||
1268 | template <typename I> | |
1269 | bool ImageReplayer<I>::update_mirror_image_status(bool force, | |
1270 | const OptionalState &state) { | |
1271 | dout(20) << dendl; | |
1272 | { | |
1273 | Mutex::Locker locker(m_lock); | |
1274 | if (!start_mirror_image_status_update(force, false)) { | |
1275 | return false; | |
1276 | } | |
1277 | } | |
1278 | ||
1279 | queue_mirror_image_status_update(state); | |
1280 | return true; | |
1281 | } | |
1282 | ||
1283 | template <typename I> | |
1284 | bool ImageReplayer<I>::start_mirror_image_status_update(bool force, | |
1285 | bool restarting) { | |
1286 | assert(m_lock.is_locked()); | |
1287 | ||
1288 | if (!force && !is_stopped_()) { | |
1289 | if (!is_running_()) { | |
1290 | dout(20) << "shut down in-progress: ignoring update" << dendl; | |
1291 | return false; | |
1292 | } else if (m_in_flight_status_updates > (restarting ? 1 : 0)) { | |
1293 | dout(20) << "already sending update" << dendl; | |
1294 | m_update_status_requested = true; | |
1295 | return false; | |
1296 | } | |
1297 | } | |
1298 | ||
1299 | dout(20) << dendl; | |
1300 | ++m_in_flight_status_updates; | |
1301 | return true; | |
1302 | } | |
1303 | ||
1304 | template <typename I> | |
1305 | void ImageReplayer<I>::finish_mirror_image_status_update() { | |
28e407b8 AA |
1306 | reregister_admin_socket_hook(); |
1307 | ||
7c673cae FG |
1308 | Context *on_finish = nullptr; |
1309 | { | |
1310 | Mutex::Locker locker(m_lock); | |
1311 | assert(m_in_flight_status_updates > 0); | |
1312 | if (--m_in_flight_status_updates > 0) { | |
1313 | dout(20) << "waiting on " << m_in_flight_status_updates << " in-flight " | |
1314 | << "updates" << dendl; | |
1315 | return; | |
1316 | } | |
1317 | ||
1318 | std::swap(on_finish, m_on_update_status_finish); | |
1319 | } | |
1320 | ||
1321 | dout(20) << dendl; | |
1322 | if (on_finish != nullptr) { | |
1323 | on_finish->complete(0); | |
1324 | } | |
1325 | } | |
1326 | ||
1327 | template <typename I> | |
1328 | void ImageReplayer<I>::queue_mirror_image_status_update(const OptionalState &state) { | |
1329 | dout(20) << dendl; | |
1330 | FunctionContext *ctx = new FunctionContext( | |
1331 | [this, state](int r) { | |
1332 | send_mirror_status_update(state); | |
1333 | }); | |
1334 | m_threads->work_queue->queue(ctx, 0); | |
1335 | } | |
1336 | ||
1337 | template <typename I> | |
1338 | void ImageReplayer<I>::send_mirror_status_update(const OptionalState &opt_state) { | |
1339 | State state; | |
1340 | std::string state_desc; | |
1341 | int last_r; | |
7c673cae | 1342 | bool stopping_replay; |
c07f9fc5 FG |
1343 | |
1344 | OptionalMirrorImageStatusState mirror_image_status_state{ | |
1345 | boost::make_optional(false, cls::rbd::MirrorImageStatusState{})}; | |
1346 | image_replayer::BootstrapRequest<I>* bootstrap_request = nullptr; | |
7c673cae FG |
1347 | { |
1348 | Mutex::Locker locker(m_lock); | |
1349 | state = m_state; | |
1350 | state_desc = m_state_desc; | |
c07f9fc5 | 1351 | mirror_image_status_state = m_mirror_image_status_state; |
7c673cae | 1352 | last_r = m_last_r; |
7c673cae | 1353 | stopping_replay = (m_local_image_ctx != nullptr); |
c07f9fc5 FG |
1354 | |
1355 | if (m_bootstrap_request != nullptr) { | |
1356 | bootstrap_request = m_bootstrap_request; | |
1357 | bootstrap_request->get(); | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | bool syncing = false; | |
1362 | if (bootstrap_request != nullptr) { | |
1363 | syncing = bootstrap_request->is_syncing(); | |
1364 | bootstrap_request->put(); | |
1365 | bootstrap_request = nullptr; | |
7c673cae FG |
1366 | } |
1367 | ||
1368 | if (opt_state) { | |
1369 | state = *opt_state; | |
1370 | } | |
1371 | ||
1372 | cls::rbd::MirrorImageStatus status; | |
1373 | status.up = true; | |
1374 | switch (state) { | |
1375 | case STATE_STARTING: | |
c07f9fc5 | 1376 | if (syncing) { |
7c673cae FG |
1377 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_SYNCING; |
1378 | status.description = state_desc.empty() ? "syncing" : state_desc; | |
c07f9fc5 | 1379 | mirror_image_status_state = status.state; |
7c673cae FG |
1380 | } else { |
1381 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_STARTING_REPLAY; | |
1382 | status.description = "starting replay"; | |
1383 | } | |
1384 | break; | |
1385 | case STATE_REPLAYING: | |
1386 | case STATE_REPLAY_FLUSHING: | |
1387 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_REPLAYING; | |
1388 | { | |
1389 | Context *on_req_finish = new FunctionContext( | |
1390 | [this](int r) { | |
1391 | dout(20) << "replay status ready: r=" << r << dendl; | |
1392 | if (r >= 0) { | |
1393 | send_mirror_status_update(boost::none); | |
1394 | } else if (r == -EAGAIN) { | |
1395 | // decrement in-flight status update counter | |
1396 | handle_mirror_status_update(r); | |
1397 | } | |
1398 | }); | |
1399 | ||
1400 | std::string desc; | |
1401 | if (!m_replay_status_formatter->get_or_send_update(&desc, | |
1402 | on_req_finish)) { | |
1403 | dout(20) << "waiting for replay status" << dendl; | |
1404 | return; | |
1405 | } | |
1406 | status.description = "replaying, " + desc; | |
c07f9fc5 | 1407 | mirror_image_status_state = boost::none; |
7c673cae FG |
1408 | } |
1409 | break; | |
1410 | case STATE_STOPPING: | |
1411 | if (stopping_replay) { | |
1412 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_STOPPING_REPLAY; | |
1413 | status.description = "stopping replay"; | |
1414 | break; | |
1415 | } | |
1416 | // FALLTHROUGH | |
1417 | case STATE_STOPPED: | |
c07f9fc5 FG |
1418 | if (last_r == -EREMOTEIO) { |
1419 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_UNKNOWN; | |
1420 | status.description = state_desc; | |
1421 | mirror_image_status_state = status.state; | |
1422 | } else if (last_r < 0) { | |
7c673cae FG |
1423 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_ERROR; |
1424 | status.description = state_desc; | |
c07f9fc5 | 1425 | mirror_image_status_state = status.state; |
7c673cae FG |
1426 | } else { |
1427 | status.state = cls::rbd::MIRROR_IMAGE_STATUS_STATE_STOPPED; | |
1428 | status.description = state_desc.empty() ? "stopped" : state_desc; | |
c07f9fc5 | 1429 | mirror_image_status_state = boost::none; |
7c673cae FG |
1430 | } |
1431 | break; | |
1432 | default: | |
1433 | assert(!"invalid state"); | |
1434 | } | |
1435 | ||
c07f9fc5 FG |
1436 | { |
1437 | Mutex::Locker locker(m_lock); | |
1438 | m_mirror_image_status_state = mirror_image_status_state; | |
1439 | } | |
1440 | ||
1441 | // prevent the status from ping-ponging when failed replays are restarted | |
1442 | if (mirror_image_status_state && | |
1443 | *mirror_image_status_state == cls::rbd::MIRROR_IMAGE_STATUS_STATE_ERROR) { | |
1444 | status.state = *mirror_image_status_state; | |
1445 | } | |
1446 | ||
7c673cae FG |
1447 | dout(20) << "status=" << status << dendl; |
1448 | librados::ObjectWriteOperation op; | |
1449 | librbd::cls_client::mirror_image_status_set(&op, m_global_image_id, status); | |
1450 | ||
1451 | librados::AioCompletion *aio_comp = create_rados_callback< | |
1452 | ImageReplayer<I>, &ImageReplayer<I>::handle_mirror_status_update>(this); | |
1453 | int r = m_local_ioctx.aio_operate(RBD_MIRRORING, aio_comp, &op); | |
1454 | assert(r == 0); | |
1455 | aio_comp->release(); | |
1456 | } | |
1457 | ||
1458 | template <typename I> | |
1459 | void ImageReplayer<I>::handle_mirror_status_update(int r) { | |
1460 | dout(20) << "r=" << r << dendl; | |
1461 | ||
1462 | bool running = false; | |
1463 | bool started = false; | |
1464 | { | |
1465 | Mutex::Locker locker(m_lock); | |
1466 | bool update_status_requested = false; | |
1467 | std::swap(update_status_requested, m_update_status_requested); | |
1468 | ||
1469 | running = is_running_(); | |
1470 | if (running && update_status_requested) { | |
1471 | started = start_mirror_image_status_update(false, true); | |
1472 | } | |
1473 | } | |
1474 | ||
1475 | // if a deferred update is available, send it -- otherwise reschedule | |
1476 | // the timer task | |
1477 | if (started) { | |
1478 | queue_mirror_image_status_update(boost::none); | |
1479 | } else if (running) { | |
1480 | reschedule_update_status_task(); | |
1481 | } | |
1482 | ||
1483 | // mark committed status update as no longer in-flight | |
1484 | finish_mirror_image_status_update(); | |
1485 | } | |
1486 | ||
1487 | template <typename I> | |
1488 | void ImageReplayer<I>::reschedule_update_status_task(int new_interval) { | |
1489 | dout(20) << dendl; | |
1490 | ||
1491 | bool canceled_task = false; | |
1492 | { | |
1493 | Mutex::Locker locker(m_lock); | |
1494 | Mutex::Locker timer_locker(m_threads->timer_lock); | |
1495 | ||
1496 | if (m_update_status_task) { | |
1497 | canceled_task = m_threads->timer->cancel_event(m_update_status_task); | |
1498 | m_update_status_task = nullptr; | |
1499 | } | |
1500 | ||
1501 | if (new_interval > 0) { | |
1502 | m_update_status_interval = new_interval; | |
1503 | } | |
1504 | ||
1505 | bool restarting = (new_interval == 0 || canceled_task); | |
1506 | if (new_interval >= 0 && is_running_() && | |
1507 | start_mirror_image_status_update(false, restarting)) { | |
1508 | m_update_status_task = new FunctionContext( | |
1509 | [this](int r) { | |
1510 | assert(m_threads->timer_lock.is_locked()); | |
1511 | m_update_status_task = nullptr; | |
1512 | ||
1513 | queue_mirror_image_status_update(boost::none); | |
1514 | }); | |
1515 | m_threads->timer->add_event_after(m_update_status_interval, | |
1516 | m_update_status_task); | |
1517 | } | |
1518 | } | |
1519 | ||
1520 | if (canceled_task) { | |
1521 | dout(20) << "canceled task" << dendl; | |
1522 | finish_mirror_image_status_update(); | |
1523 | } | |
1524 | } | |
1525 | ||
1526 | template <typename I> | |
1527 | void ImageReplayer<I>::shut_down(int r) { | |
1528 | dout(20) << "r=" << r << dendl; | |
3efd9988 FG |
1529 | |
1530 | bool canceled_delayed_preprocess_task = false; | |
1531 | { | |
1532 | Mutex::Locker timer_locker(m_threads->timer_lock); | |
1533 | if (m_delayed_preprocess_task != nullptr) { | |
1534 | canceled_delayed_preprocess_task = m_threads->timer->cancel_event( | |
1535 | m_delayed_preprocess_task); | |
1536 | assert(canceled_delayed_preprocess_task); | |
1537 | m_delayed_preprocess_task = nullptr; | |
1538 | } | |
1539 | } | |
1540 | if (canceled_delayed_preprocess_task) { | |
1541 | // wake up sleeping replay | |
1542 | m_event_replay_tracker.finish_op(); | |
1543 | } | |
1544 | ||
7c673cae FG |
1545 | { |
1546 | Mutex::Locker locker(m_lock); | |
1547 | assert(m_state == STATE_STOPPING); | |
1548 | ||
1549 | // if status updates are in-flight, wait for them to complete | |
1550 | // before proceeding | |
1551 | if (m_in_flight_status_updates > 0) { | |
1552 | if (m_on_update_status_finish == nullptr) { | |
1553 | dout(20) << "waiting for in-flight status update" << dendl; | |
1554 | m_on_update_status_finish = new FunctionContext( | |
1555 | [this, r](int _r) { | |
1556 | shut_down(r); | |
1557 | }); | |
1558 | } | |
1559 | return; | |
1560 | } | |
1561 | } | |
1562 | ||
31f18b77 FG |
1563 | // NOTE: it's important to ensure that the local image is fully |
1564 | // closed before attempting to close the remote journal in | |
1565 | // case the remote cluster is unreachable | |
1566 | ||
7c673cae FG |
1567 | // chain the shut down sequence (reverse order) |
1568 | Context *ctx = new FunctionContext( | |
1569 | [this, r](int _r) { | |
1570 | update_mirror_image_status(true, STATE_STOPPED); | |
1571 | handle_shut_down(r); | |
1572 | }); | |
31f18b77 FG |
1573 | |
1574 | // close the remote journal | |
7c673cae FG |
1575 | if (m_remote_journaler != nullptr) { |
1576 | ctx = new FunctionContext([this, ctx](int r) { | |
1577 | delete m_remote_journaler; | |
1578 | m_remote_journaler = nullptr; | |
1579 | ctx->complete(0); | |
1580 | }); | |
1581 | ctx = new FunctionContext([this, ctx](int r) { | |
1582 | m_remote_journaler->remove_listener(&m_remote_listener); | |
1583 | m_remote_journaler->shut_down(ctx); | |
1584 | }); | |
7c673cae | 1585 | } |
31f18b77 FG |
1586 | |
1587 | // stop the replay of remote journal events | |
1588 | if (m_replay_handler != nullptr) { | |
1589 | ctx = new FunctionContext([this, ctx](int r) { | |
1590 | delete m_replay_handler; | |
1591 | m_replay_handler = nullptr; | |
1592 | ||
1593 | m_event_replay_tracker.wait_for_ops(ctx); | |
1594 | }); | |
1595 | ctx = new FunctionContext([this, ctx](int r) { | |
1596 | m_remote_journaler->stop_replay(ctx); | |
1597 | }); | |
1598 | } | |
1599 | ||
1600 | // close the local image (release exclusive lock) | |
1601 | if (m_local_image_ctx) { | |
1602 | ctx = new FunctionContext([this, ctx](int r) { | |
1603 | CloseImageRequest<I> *request = CloseImageRequest<I>::create( | |
1604 | &m_local_image_ctx, ctx); | |
1605 | request->send(); | |
1606 | }); | |
1607 | } | |
1608 | ||
1609 | // shut down event replay into the local image | |
7c673cae FG |
1610 | if (m_local_journal != nullptr) { |
1611 | ctx = new FunctionContext([this, ctx](int r) { | |
1612 | m_local_journal = nullptr; | |
1613 | ctx->complete(0); | |
1614 | }); | |
1615 | if (m_local_replay != nullptr) { | |
1616 | ctx = new FunctionContext([this, ctx](int r) { | |
1617 | m_local_journal->stop_external_replay(); | |
1618 | m_local_replay = nullptr; | |
1619 | ||
1620 | EventPreprocessor<I>::destroy(m_event_preprocessor); | |
1621 | m_event_preprocessor = nullptr; | |
1622 | ctx->complete(0); | |
1623 | }); | |
1624 | } | |
1625 | ctx = new FunctionContext([this, ctx](int r) { | |
7c673cae FG |
1626 | // blocks if listener notification is in-progress |
1627 | m_local_journal->remove_listener(m_journal_listener); | |
7c673cae FG |
1628 | ctx->complete(0); |
1629 | }); | |
31f18b77 FG |
1630 | } |
1631 | ||
1632 | // wait for all local in-flight replay events to complete | |
1633 | ctx = new FunctionContext([this, ctx](int r) { | |
1634 | if (r < 0) { | |
1635 | derr << "error shutting down journal replay: " << cpp_strerror(r) | |
1636 | << dendl; | |
1637 | } | |
1638 | ||
1639 | m_event_replay_tracker.wait_for_ops(ctx); | |
1640 | }); | |
1641 | ||
1642 | // flush any local in-flight replay events | |
1643 | if (m_local_replay != nullptr) { | |
7c673cae | 1644 | ctx = new FunctionContext([this, ctx](int r) { |
31f18b77 | 1645 | m_local_replay->shut_down(true, ctx); |
7c673cae FG |
1646 | }); |
1647 | } | |
31f18b77 | 1648 | |
7c673cae FG |
1649 | m_threads->work_queue->queue(ctx, 0); |
1650 | } | |
1651 | ||
1652 | template <typename I> | |
1653 | void ImageReplayer<I>::handle_shut_down(int r) { | |
1654 | reschedule_update_status_task(-1); | |
1655 | ||
3efd9988 | 1656 | bool unregister_asok_hook = false; |
7c673cae FG |
1657 | { |
1658 | Mutex::Locker locker(m_lock); | |
1659 | ||
1660 | // if status updates are in-flight, wait for them to complete | |
1661 | // before proceeding | |
1662 | if (m_in_flight_status_updates > 0) { | |
1663 | if (m_on_update_status_finish == nullptr) { | |
1664 | dout(20) << "waiting for in-flight status update" << dendl; | |
1665 | m_on_update_status_finish = new FunctionContext( | |
1666 | [this, r](int _r) { | |
1667 | handle_shut_down(r); | |
1668 | }); | |
1669 | } | |
1670 | return; | |
1671 | } | |
1672 | ||
d2e6a577 FG |
1673 | bool delete_requested = false; |
1674 | if (m_delete_requested && !m_local_image_id.empty()) { | |
1675 | assert(m_remote_image.image_id.empty()); | |
1676 | dout(0) << "remote image no longer exists: scheduling deletion" << dendl; | |
1677 | delete_requested = true; | |
1678 | } | |
1679 | if (delete_requested || m_resync_requested) { | |
7c673cae FG |
1680 | m_image_deleter->schedule_image_delete(m_local, |
1681 | m_local_pool_id, | |
c07f9fc5 | 1682 | m_global_image_id, |
d2e6a577 FG |
1683 | m_resync_requested); |
1684 | ||
1685 | m_local_image_id = ""; | |
1686 | m_resync_requested = false; | |
1687 | if (m_delete_requested) { | |
3efd9988 | 1688 | unregister_asok_hook = true; |
d2e6a577 FG |
1689 | m_delete_requested = false; |
1690 | } | |
1691 | } else if (m_last_r == -ENOENT && | |
1692 | m_local_image_id.empty() && m_remote_image.image_id.empty()) { | |
1693 | dout(0) << "mirror image no longer exists" << dendl; | |
3efd9988 | 1694 | unregister_asok_hook = true; |
d2e6a577 | 1695 | m_finished = true; |
7c673cae FG |
1696 | } |
1697 | } | |
1698 | ||
3efd9988 FG |
1699 | if (unregister_asok_hook) { |
1700 | unregister_admin_socket_hook(); | |
1701 | } | |
1702 | ||
7c673cae FG |
1703 | dout(20) << "stop complete" << dendl; |
1704 | m_local_ioctx.close(); | |
1705 | ||
1706 | ReplayStatusFormatter<I>::destroy(m_replay_status_formatter); | |
1707 | m_replay_status_formatter = nullptr; | |
1708 | ||
1709 | Context *on_start = nullptr; | |
1710 | Context *on_stop = nullptr; | |
1711 | { | |
1712 | Mutex::Locker locker(m_lock); | |
1713 | std::swap(on_start, m_on_start_finish); | |
1714 | std::swap(on_stop, m_on_stop_finish); | |
1715 | m_stop_requested = false; | |
1716 | assert(m_delayed_preprocess_task == nullptr); | |
1717 | assert(m_state == STATE_STOPPING); | |
1718 | m_state = STATE_STOPPED; | |
1719 | } | |
1720 | ||
1721 | if (on_start != nullptr) { | |
1722 | dout(20) << "on start finish complete, r=" << r << dendl; | |
1723 | on_start->complete(r); | |
1724 | r = 0; | |
1725 | } | |
1726 | if (on_stop != nullptr) { | |
1727 | dout(20) << "on stop finish complete, r=" << r << dendl; | |
1728 | on_stop->complete(r); | |
1729 | } | |
1730 | } | |
1731 | ||
1732 | template <typename I> | |
1733 | void ImageReplayer<I>::handle_remote_journal_metadata_updated() { | |
1734 | dout(20) << dendl; | |
1735 | ||
1736 | cls::journal::Client client; | |
1737 | { | |
1738 | Mutex::Locker locker(m_lock); | |
1739 | if (!is_running_()) { | |
1740 | return; | |
1741 | } | |
1742 | ||
1743 | int r = m_remote_journaler->get_cached_client(m_local_mirror_uuid, &client); | |
1744 | if (r < 0) { | |
1745 | derr << "failed to retrieve client: " << cpp_strerror(r) << dendl; | |
1746 | return; | |
1747 | } | |
1748 | } | |
1749 | ||
1750 | if (client.state != cls::journal::CLIENT_STATE_CONNECTED) { | |
1751 | dout(0) << "client flagged disconnected, stopping image replay" << dendl; | |
1752 | stop(nullptr, false, -ENOTCONN, "disconnected"); | |
1753 | } | |
1754 | } | |
1755 | ||
1756 | template <typename I> | |
1757 | std::string ImageReplayer<I>::to_string(const State state) { | |
1758 | switch (state) { | |
1759 | case ImageReplayer<I>::STATE_STARTING: | |
1760 | return "Starting"; | |
1761 | case ImageReplayer<I>::STATE_REPLAYING: | |
1762 | return "Replaying"; | |
1763 | case ImageReplayer<I>::STATE_REPLAY_FLUSHING: | |
1764 | return "ReplayFlushing"; | |
1765 | case ImageReplayer<I>::STATE_STOPPING: | |
1766 | return "Stopping"; | |
1767 | case ImageReplayer<I>::STATE_STOPPED: | |
1768 | return "Stopped"; | |
1769 | default: | |
1770 | break; | |
1771 | } | |
1772 | return "Unknown(" + stringify(state) + ")"; | |
1773 | } | |
1774 | ||
1775 | template <typename I> | |
1776 | void ImageReplayer<I>::resync_image(Context *on_finish) { | |
1777 | dout(20) << dendl; | |
1778 | ||
d2e6a577 FG |
1779 | m_resync_requested = true; |
1780 | stop(on_finish); | |
1781 | } | |
1782 | ||
1783 | template <typename I> | |
1784 | void ImageReplayer<I>::register_admin_socket_hook() { | |
3efd9988 FG |
1785 | ImageReplayerAdminSocketHook<I> *asok_hook; |
1786 | { | |
1787 | Mutex::Locker locker(m_lock); | |
1788 | if (m_asok_hook != nullptr) { | |
1789 | return; | |
1790 | } | |
7c673cae | 1791 | |
28e407b8 | 1792 | dout(15) << "registered asok hook: " << m_name << dendl; |
3efd9988 FG |
1793 | asok_hook = new ImageReplayerAdminSocketHook<I>(g_ceph_context, m_name, |
1794 | this); | |
1795 | int r = asok_hook->register_commands(); | |
1796 | if (r == 0) { | |
1797 | m_asok_hook = asok_hook; | |
1798 | return; | |
1799 | } | |
d2e6a577 | 1800 | derr << "error registering admin socket commands" << dendl; |
d2e6a577 | 1801 | } |
3efd9988 | 1802 | delete asok_hook; |
d2e6a577 FG |
1803 | } |
1804 | ||
1805 | template <typename I> | |
1806 | void ImageReplayer<I>::unregister_admin_socket_hook() { | |
28e407b8 | 1807 | dout(15) << dendl; |
d2e6a577 | 1808 | |
3efd9988 FG |
1809 | AdminSocketHook *asok_hook = nullptr; |
1810 | { | |
1811 | Mutex::Locker locker(m_lock); | |
1812 | std::swap(asok_hook, m_asok_hook); | |
1813 | } | |
1814 | delete asok_hook; | |
1815 | } | |
1816 | ||
1817 | template <typename I> | |
28e407b8 | 1818 | void ImageReplayer<I>::reregister_admin_socket_hook() { |
3efd9988 FG |
1819 | { |
1820 | Mutex::Locker locker(m_lock); | |
28e407b8 | 1821 | auto name = m_local_ioctx.get_pool_name() + "/" + m_local_image_name; |
3efd9988 FG |
1822 | if (m_name == name) { |
1823 | return; | |
1824 | } | |
1825 | m_name = name; | |
1826 | } | |
1827 | unregister_admin_socket_hook(); | |
1828 | register_admin_socket_hook(); | |
7c673cae FG |
1829 | } |
1830 | ||
1831 | template <typename I> | |
1832 | std::ostream &operator<<(std::ostream &os, const ImageReplayer<I> &replayer) | |
1833 | { | |
1834 | os << "ImageReplayer: " << &replayer << " [" << replayer.get_local_pool_id() | |
1835 | << "/" << replayer.get_global_image_id() << "]"; | |
1836 | return os; | |
1837 | } | |
1838 | ||
1839 | } // namespace mirror | |
1840 | } // namespace rbd | |
1841 | ||
1842 | template class rbd::mirror::ImageReplayer<librbd::ImageCtx>; |