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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 "cls/rbd/cls_rbd_types.h" | |
5 | #include "librbd/Operations.h" | |
6 | #include "common/dout.h" | |
7 | #include "common/errno.h" | |
11fdf7f2 | 8 | #include "common/perf_counters.h" |
11fdf7f2 | 9 | #include "osdc/Striper.h" |
7c673cae FG |
10 | |
11 | #include "librbd/ExclusiveLock.h" | |
12 | #include "librbd/ImageCtx.h" | |
13 | #include "librbd/ImageState.h" | |
14 | #include "librbd/ImageWatcher.h" | |
15 | #include "librbd/ObjectMap.h" | |
b32b8144 | 16 | #include "librbd/Types.h" |
7c673cae | 17 | #include "librbd/Utils.h" |
11fdf7f2 | 18 | #include "librbd/api/Config.h" |
f67539c2 | 19 | #include "librbd/asio/ContextWQ.h" |
1e59de90 | 20 | #include "librbd/io/Utils.h" |
7c673cae FG |
21 | #include "librbd/journal/DisabledPolicy.h" |
22 | #include "librbd/journal/StandardPolicy.h" | |
23 | #include "librbd/operation/DisableFeaturesRequest.h" | |
24 | #include "librbd/operation/EnableFeaturesRequest.h" | |
25 | #include "librbd/operation/FlattenRequest.h" | |
26 | #include "librbd/operation/MetadataRemoveRequest.h" | |
27 | #include "librbd/operation/MetadataSetRequest.h" | |
11fdf7f2 | 28 | #include "librbd/operation/MigrateRequest.h" |
7c673cae FG |
29 | #include "librbd/operation/ObjectMapIterate.h" |
30 | #include "librbd/operation/RebuildObjectMapRequest.h" | |
31 | #include "librbd/operation/RenameRequest.h" | |
32 | #include "librbd/operation/ResizeRequest.h" | |
33 | #include "librbd/operation/SnapshotCreateRequest.h" | |
34 | #include "librbd/operation/SnapshotProtectRequest.h" | |
35 | #include "librbd/operation/SnapshotRemoveRequest.h" | |
36 | #include "librbd/operation/SnapshotRenameRequest.h" | |
37 | #include "librbd/operation/SnapshotRollbackRequest.h" | |
38 | #include "librbd/operation/SnapshotUnprotectRequest.h" | |
39 | #include "librbd/operation/SnapshotLimitRequest.h" | |
11fdf7f2 | 40 | #include "librbd/operation/SparsifyRequest.h" |
7c673cae | 41 | #include <set> |
f67539c2 | 42 | #include <boost/bind/bind.hpp> |
7c673cae FG |
43 | #include <boost/scope_exit.hpp> |
44 | ||
45 | #define dout_subsys ceph_subsys_rbd | |
46 | #undef dout_prefix | |
47 | #define dout_prefix *_dout << "librbd::Operations: " | |
48 | ||
49 | namespace librbd { | |
50 | ||
f67539c2 TL |
51 | using namespace boost::placeholders; |
52 | ||
7c673cae FG |
53 | namespace { |
54 | ||
f67539c2 TL |
55 | std::ostream &operator<<(std::ostream &out, const Operation &op) { |
56 | switch (op) { | |
57 | case OPERATION_CHECK_OBJECT_MAP: | |
58 | out << "check object map"; | |
59 | break; | |
60 | case OPERATION_FLATTEN: | |
61 | out << "flatten"; | |
62 | break; | |
63 | case OPERATION_METADATA_UPDATE: | |
64 | out << "metadata update"; | |
65 | break; | |
66 | case OPERATION_MIGRATE: | |
67 | out << "migrate"; | |
68 | break; | |
69 | case OPERATION_REBUILD_OBJECT_MAP: | |
70 | out << "rebuild object map"; | |
71 | break; | |
72 | case OPERATION_RENAME: | |
73 | out << "rename"; | |
74 | break; | |
75 | case OPERATION_RESIZE: | |
76 | out << "resize"; | |
77 | break; | |
78 | case OPERATION_SNAP_CREATE: | |
79 | out << "snap create"; | |
80 | break; | |
81 | case OPERATION_SNAP_PROTECT: | |
82 | out << "snap protect"; | |
83 | break; | |
84 | case OPERATION_SNAP_REMOVE: | |
85 | out << "snap remove"; | |
86 | break; | |
87 | case OPERATION_SNAP_RENAME: | |
88 | out << "snap rename"; | |
89 | break; | |
90 | case OPERATION_SNAP_ROLLBACK: | |
91 | out << "snap rollback"; | |
92 | break; | |
93 | case OPERATION_SNAP_UNPROTECT: | |
94 | out << "snap unprotect"; | |
95 | break; | |
96 | case OPERATION_SPARSIFY: | |
97 | out << "sparsify"; | |
98 | break; | |
99 | case OPERATION_UPDATE_FEATURES: | |
100 | out << "update features"; | |
101 | break; | |
102 | default: | |
103 | ceph_abort(); | |
104 | break; | |
105 | } | |
106 | return out; | |
107 | } | |
108 | ||
7c673cae FG |
109 | template <typename I> |
110 | struct C_NotifyUpdate : public Context { | |
111 | I &image_ctx; | |
112 | Context *on_finish; | |
113 | bool notified = false; | |
114 | ||
115 | C_NotifyUpdate(I &image_ctx, Context *on_finish) | |
116 | : image_ctx(image_ctx), on_finish(on_finish) { | |
117 | } | |
118 | ||
119 | void complete(int r) override { | |
120 | CephContext *cct = image_ctx.cct; | |
121 | if (notified) { | |
122 | if (r == -ETIMEDOUT) { | |
123 | // don't fail the op if a peer fails to get the update notification | |
124 | lderr(cct) << "update notification timed-out" << dendl; | |
125 | r = 0; | |
126 | } else if (r == -ENOENT) { | |
127 | // don't fail if header is missing (e.g. v1 image rename) | |
128 | ldout(cct, 5) << "update notification on missing header" << dendl; | |
129 | r = 0; | |
130 | } else if (r < 0) { | |
131 | lderr(cct) << "update notification failed: " << cpp_strerror(r) | |
132 | << dendl; | |
133 | } | |
134 | Context::complete(r); | |
135 | return; | |
136 | } | |
137 | ||
138 | if (r < 0) { | |
139 | // op failed -- no need to send update notification | |
140 | Context::complete(r); | |
141 | return; | |
142 | } | |
143 | ||
144 | notified = true; | |
145 | image_ctx.notify_update(this); | |
146 | } | |
147 | void finish(int r) override { | |
148 | on_finish->complete(r); | |
149 | } | |
150 | }; | |
151 | ||
152 | template <typename I> | |
153 | struct C_InvokeAsyncRequest : public Context { | |
154 | /** | |
155 | * @verbatim | |
156 | * | |
157 | * <start> | |
158 | * | | |
159 | * . . . . . . | . . . . . . . . . . . . . . . . . . | |
160 | * . . | . . | |
161 | * . v v v . | |
162 | * . REFRESH_IMAGE (skip if not needed) . | |
163 | * . | . | |
164 | * . v . | |
165 | * . ACQUIRE_LOCK (skip if exclusive lock . | |
166 | * . | disabled or has lock) . | |
167 | * . | . | |
168 | * . /--------/ \--------\ . . . . . . . . . . . . . | |
169 | * . | | . | |
170 | * . v v . | |
171 | * LOCAL_REQUEST REMOTE_REQUEST | |
172 | * | | | |
173 | * | | | |
174 | * \--------\ /--------/ | |
175 | * | | |
176 | * v | |
177 | * <finish> | |
178 | * | |
179 | * @endverbatim | |
180 | */ | |
181 | ||
182 | I &image_ctx; | |
f67539c2 | 183 | Operation operation; |
92f5a8d4 | 184 | exclusive_lock::OperationRequestType request_type; |
7c673cae FG |
185 | bool permit_snapshot; |
186 | boost::function<void(Context*)> local; | |
187 | boost::function<void(Context*)> remote; | |
188 | std::set<int> filter_error_codes; | |
189 | Context *on_finish; | |
190 | bool request_lock = false; | |
191 | ||
f67539c2 | 192 | C_InvokeAsyncRequest(I &image_ctx, Operation operation, |
92f5a8d4 | 193 | exclusive_lock::OperationRequestType request_type, |
7c673cae FG |
194 | bool permit_snapshot, |
195 | const boost::function<void(Context*)>& local, | |
196 | const boost::function<void(Context*)>& remote, | |
197 | const std::set<int> &filter_error_codes, | |
198 | Context *on_finish) | |
f67539c2 | 199 | : image_ctx(image_ctx), operation(operation), request_type(request_type), |
7c673cae FG |
200 | permit_snapshot(permit_snapshot), local(local), remote(remote), |
201 | filter_error_codes(filter_error_codes), on_finish(on_finish) { | |
202 | } | |
203 | ||
204 | void send() { | |
205 | send_refresh_image(); | |
206 | } | |
207 | ||
208 | void send_refresh_image() { | |
209 | if (!image_ctx.state->is_refresh_required()) { | |
210 | send_acquire_exclusive_lock(); | |
211 | return; | |
212 | } | |
213 | ||
214 | CephContext *cct = image_ctx.cct; | |
215 | ldout(cct, 20) << __func__ << dendl; | |
216 | ||
217 | Context *ctx = util::create_context_callback< | |
218 | C_InvokeAsyncRequest<I>, | |
219 | &C_InvokeAsyncRequest<I>::handle_refresh_image>(this); | |
220 | image_ctx.state->refresh(ctx); | |
221 | } | |
222 | ||
223 | void handle_refresh_image(int r) { | |
224 | CephContext *cct = image_ctx.cct; | |
225 | ldout(cct, 20) << __func__ << ": r=" << r << dendl; | |
226 | ||
227 | if (r < 0) { | |
228 | lderr(cct) << "failed to refresh image: " << cpp_strerror(r) << dendl; | |
229 | complete(r); | |
230 | return; | |
231 | } | |
232 | ||
233 | send_acquire_exclusive_lock(); | |
234 | } | |
235 | ||
236 | void send_acquire_exclusive_lock() { | |
237 | // context can complete before owner_lock is unlocked | |
9f95a23c TL |
238 | ceph::shared_mutex &owner_lock(image_ctx.owner_lock); |
239 | owner_lock.lock_shared(); | |
240 | image_ctx.image_lock.lock_shared(); | |
7c673cae FG |
241 | if (image_ctx.read_only || |
242 | (!permit_snapshot && image_ctx.snap_id != CEPH_NOSNAP)) { | |
9f95a23c TL |
243 | image_ctx.image_lock.unlock_shared(); |
244 | owner_lock.unlock_shared(); | |
7c673cae FG |
245 | complete(-EROFS); |
246 | return; | |
247 | } | |
9f95a23c | 248 | image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
249 | |
250 | if (image_ctx.exclusive_lock == nullptr) { | |
251 | send_local_request(); | |
9f95a23c | 252 | owner_lock.unlock_shared(); |
7c673cae FG |
253 | return; |
254 | } else if (image_ctx.image_watcher == nullptr) { | |
9f95a23c | 255 | owner_lock.unlock_shared(); |
7c673cae FG |
256 | complete(-EROFS); |
257 | return; | |
258 | } | |
259 | ||
7c673cae | 260 | if (image_ctx.exclusive_lock->is_lock_owner() && |
92f5a8d4 | 261 | image_ctx.exclusive_lock->accept_request(request_type, nullptr)) { |
7c673cae | 262 | send_local_request(); |
9f95a23c | 263 | owner_lock.unlock_shared(); |
7c673cae FG |
264 | return; |
265 | } | |
266 | ||
267 | CephContext *cct = image_ctx.cct; | |
268 | ldout(cct, 20) << __func__ << dendl; | |
269 | ||
270 | Context *ctx = util::create_async_context_callback( | |
271 | image_ctx, util::create_context_callback< | |
9f95a23c TL |
272 | C_InvokeAsyncRequest<I>, |
273 | &C_InvokeAsyncRequest<I>::handle_acquire_exclusive_lock>( | |
274 | this, image_ctx.exclusive_lock)); | |
7c673cae FG |
275 | |
276 | if (request_lock) { | |
277 | // current lock owner doesn't support op -- try to perform | |
278 | // the action locally | |
279 | request_lock = false; | |
280 | image_ctx.exclusive_lock->acquire_lock(ctx); | |
281 | } else { | |
282 | image_ctx.exclusive_lock->try_acquire_lock(ctx); | |
283 | } | |
9f95a23c | 284 | owner_lock.unlock_shared(); |
7c673cae FG |
285 | } |
286 | ||
287 | void handle_acquire_exclusive_lock(int r) { | |
288 | CephContext *cct = image_ctx.cct; | |
289 | ldout(cct, 20) << __func__ << ": r=" << r << dendl; | |
290 | ||
291 | if (r < 0) { | |
f67539c2 | 292 | complete(r == -EBLOCKLISTED ? -EBLOCKLISTED : -EROFS); |
7c673cae FG |
293 | return; |
294 | } | |
295 | ||
296 | // context can complete before owner_lock is unlocked | |
9f95a23c TL |
297 | ceph::shared_mutex &owner_lock(image_ctx.owner_lock); |
298 | owner_lock.lock_shared(); | |
91327a77 AA |
299 | if (image_ctx.exclusive_lock == nullptr || |
300 | image_ctx.exclusive_lock->is_lock_owner()) { | |
7c673cae | 301 | send_local_request(); |
9f95a23c | 302 | owner_lock.unlock_shared(); |
7c673cae FG |
303 | return; |
304 | } | |
305 | ||
306 | send_remote_request(); | |
9f95a23c | 307 | owner_lock.unlock_shared(); |
7c673cae FG |
308 | } |
309 | ||
310 | void send_remote_request() { | |
9f95a23c | 311 | ceph_assert(ceph_mutex_is_locked(image_ctx.owner_lock)); |
7c673cae FG |
312 | |
313 | CephContext *cct = image_ctx.cct; | |
314 | ldout(cct, 20) << __func__ << dendl; | |
315 | ||
11fdf7f2 TL |
316 | Context *ctx = util::create_async_context_callback( |
317 | image_ctx, util::create_context_callback< | |
318 | C_InvokeAsyncRequest<I>, | |
319 | &C_InvokeAsyncRequest<I>::handle_remote_request>(this)); | |
7c673cae FG |
320 | remote(ctx); |
321 | } | |
322 | ||
323 | void handle_remote_request(int r) { | |
324 | CephContext *cct = image_ctx.cct; | |
325 | ldout(cct, 20) << __func__ << ": r=" << r << dendl; | |
326 | ||
327 | if (r == -EOPNOTSUPP) { | |
f67539c2 TL |
328 | ldout(cct, 5) << operation << " not supported by current lock owner" |
329 | << dendl; | |
7c673cae FG |
330 | request_lock = true; |
331 | send_refresh_image(); | |
332 | return; | |
333 | } else if (r != -ETIMEDOUT && r != -ERESTART) { | |
334 | image_ctx.state->handle_update_notification(); | |
335 | ||
336 | complete(r); | |
337 | return; | |
338 | } | |
339 | ||
f67539c2 | 340 | ldout(cct, 5) << operation << " timed out notifying lock owner" << dendl; |
7c673cae FG |
341 | send_refresh_image(); |
342 | } | |
343 | ||
344 | void send_local_request() { | |
f67539c2 TL |
345 | auto ctx = new LambdaContext( |
346 | [this](int r) { | |
347 | if (r == -ERESTART) { | |
348 | image_ctx.operations->finish_op(operation, r); | |
349 | send_refresh_image(); | |
350 | return; | |
351 | } | |
352 | execute_local_request(); | |
353 | }); | |
354 | ||
355 | image_ctx.operations->start_op(operation, ctx); | |
356 | } | |
357 | ||
358 | void execute_local_request() { | |
359 | std::shared_lock owner_locker{image_ctx.owner_lock}; | |
7c673cae FG |
360 | |
361 | CephContext *cct = image_ctx.cct; | |
362 | ldout(cct, 20) << __func__ << dendl; | |
363 | ||
364 | Context *ctx = util::create_async_context_callback( | |
365 | image_ctx, util::create_context_callback< | |
366 | C_InvokeAsyncRequest<I>, | |
367 | &C_InvokeAsyncRequest<I>::handle_local_request>(this)); | |
368 | local(ctx); | |
369 | } | |
370 | ||
371 | void handle_local_request(int r) { | |
372 | CephContext *cct = image_ctx.cct; | |
373 | ldout(cct, 20) << __func__ << ": r=" << r << dendl; | |
374 | ||
f67539c2 TL |
375 | image_ctx.operations->finish_op(operation, r); |
376 | ||
7c673cae FG |
377 | if (r == -ERESTART) { |
378 | send_refresh_image(); | |
379 | return; | |
380 | } | |
381 | complete(r); | |
382 | } | |
383 | ||
384 | void finish(int r) override { | |
385 | if (filter_error_codes.count(r) != 0) { | |
386 | r = 0; | |
387 | } | |
388 | on_finish->complete(r); | |
389 | } | |
390 | }; | |
391 | ||
392 | template <typename I> | |
393 | bool needs_invalidate(I& image_ctx, uint64_t object_no, | |
394 | uint8_t current_state, uint8_t new_state) { | |
395 | if ( (current_state == OBJECT_EXISTS || | |
396 | current_state == OBJECT_EXISTS_CLEAN) && | |
397 | (new_state == OBJECT_NONEXISTENT || | |
398 | new_state == OBJECT_PENDING)) { | |
399 | return false; | |
400 | } | |
401 | return true; | |
402 | } | |
403 | ||
404 | } // anonymous namespace | |
405 | ||
406 | template <typename I> | |
407 | Operations<I>::Operations(I &image_ctx) | |
f67539c2 TL |
408 | : m_image_ctx(image_ctx), |
409 | m_queue_lock(ceph::make_mutex( | |
410 | util::unique_lock_name("librbd::Operations::m_queue_lock", | |
411 | this))) { | |
412 | } | |
413 | ||
414 | template <typename I> | |
415 | void Operations<I>::start_op(Operation op, Context *ctx) { | |
416 | CephContext *cct = m_image_ctx.cct; | |
417 | ldout(cct, 20) << __func__ << ": " << op << " " << ctx << dendl; | |
418 | ||
419 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); | |
420 | bool requires_lock = m_image_ctx.exclusive_lock != nullptr; | |
421 | ||
422 | ctx = util::create_async_context_callback( | |
423 | m_image_ctx, new LambdaContext( | |
424 | [this, op, requires_lock, ctx](int r) { | |
425 | Context *finish_op_ctx = nullptr; | |
426 | if (requires_lock && r == 0) { | |
427 | std::shared_lock owner_locker{m_image_ctx.owner_lock}; | |
428 | std::shared_lock image_locker{m_image_ctx.image_lock}; | |
429 | auto exclusive_lock = m_image_ctx.exclusive_lock; | |
430 | ||
431 | if (exclusive_lock == nullptr || | |
432 | (finish_op_ctx = exclusive_lock->start_op(&r)) == nullptr) { | |
433 | ldout(m_image_ctx.cct, 20) << "lock owner lost, restarting" | |
434 | << dendl; | |
435 | r = -ERESTART; | |
436 | } | |
437 | } | |
438 | ||
439 | ldout(m_image_ctx.cct, 20) << "start " << op << " " << ctx << dendl; | |
440 | ctx->complete(r); | |
441 | if (finish_op_ctx != nullptr) { | |
442 | finish_op_ctx->complete(0); | |
443 | } | |
444 | })); | |
445 | ||
446 | std::unique_lock locker{m_queue_lock}; | |
447 | if (!m_in_flight_ops.insert(op).second) { | |
448 | ldout(cct, 20) << __func__ << ": " << op << " in flight" << dendl; | |
449 | m_queued_ops[op].push_back(ctx); | |
450 | return; | |
451 | } | |
452 | ||
453 | ctx->complete(0); | |
454 | } | |
455 | ||
456 | template <typename I> | |
457 | void Operations<I>::finish_op(Operation op, int r) { | |
458 | CephContext *cct = m_image_ctx.cct; | |
459 | ldout(cct, 20) << __func__ << ": " << op << " r=" << r << dendl; | |
460 | ||
461 | std::unique_lock locker{m_queue_lock}; | |
462 | auto &queue = m_queued_ops[op]; | |
463 | if (queue.empty()) { | |
464 | m_in_flight_ops.erase(op); | |
465 | return; | |
466 | } | |
467 | ||
468 | auto ctx = queue.front(); | |
469 | queue.pop_front(); | |
470 | // propagate -ERESTART through all the queue | |
471 | ctx->complete(r == -ERESTART ? r : 0); | |
7c673cae FG |
472 | } |
473 | ||
474 | template <typename I> | |
475 | int Operations<I>::flatten(ProgressContext &prog_ctx) { | |
476 | CephContext *cct = m_image_ctx.cct; | |
477 | ldout(cct, 20) << "flatten" << dendl; | |
478 | ||
479 | int r = m_image_ctx.state->refresh_if_required(); | |
480 | if (r < 0) { | |
481 | return r; | |
482 | } | |
483 | ||
484 | if (m_image_ctx.read_only) { | |
485 | return -EROFS; | |
486 | } | |
487 | ||
488 | { | |
9f95a23c | 489 | std::shared_lock image_locker{m_image_ctx.image_lock}; |
7c673cae FG |
490 | if (m_image_ctx.parent_md.spec.pool_id == -1) { |
491 | lderr(cct) << "image has no parent" << dendl; | |
492 | return -EINVAL; | |
493 | } | |
494 | } | |
495 | ||
f67539c2 TL |
496 | uint64_t request_id = util::reserve_async_request_id(); |
497 | r = invoke_async_request(OPERATION_FLATTEN, | |
92f5a8d4 TL |
498 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
499 | false, | |
7c673cae FG |
500 | boost::bind(&Operations<I>::execute_flatten, this, |
501 | boost::ref(prog_ctx), _1), | |
502 | boost::bind(&ImageWatcher<I>::notify_flatten, | |
503 | m_image_ctx.image_watcher, request_id, | |
504 | boost::ref(prog_ctx), _1)); | |
505 | ||
506 | if (r < 0 && r != -EINVAL) { | |
507 | return r; | |
508 | } | |
509 | ldout(cct, 20) << "flatten finished" << dendl; | |
510 | return 0; | |
511 | } | |
512 | ||
513 | template <typename I> | |
514 | void Operations<I>::execute_flatten(ProgressContext &prog_ctx, | |
515 | Context *on_finish) { | |
9f95a23c | 516 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
11fdf7f2 TL |
517 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
518 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
7c673cae FG |
519 | |
520 | CephContext *cct = m_image_ctx.cct; | |
521 | ldout(cct, 20) << "flatten" << dendl; | |
522 | ||
11fdf7f2 | 523 | if (m_image_ctx.read_only || m_image_ctx.operations_disabled) { |
7c673cae FG |
524 | on_finish->complete(-EROFS); |
525 | return; | |
526 | } | |
527 | ||
9f95a23c | 528 | m_image_ctx.image_lock.lock_shared(); |
7c673cae FG |
529 | |
530 | // can't flatten a non-clone | |
531 | if (m_image_ctx.parent_md.spec.pool_id == -1) { | |
532 | lderr(cct) << "image has no parent" << dendl; | |
9f95a23c | 533 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
534 | on_finish->complete(-EINVAL); |
535 | return; | |
536 | } | |
537 | if (m_image_ctx.snap_id != CEPH_NOSNAP) { | |
538 | lderr(cct) << "snapshots cannot be flattened" << dendl; | |
9f95a23c | 539 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
540 | on_finish->complete(-EROFS); |
541 | return; | |
542 | } | |
543 | ||
1e59de90 TL |
544 | uint64_t crypto_header_objects = Striper::get_num_objects( |
545 | m_image_ctx.layout, | |
546 | m_image_ctx.get_area_size(io::ImageArea::CRYPTO_HEADER)); | |
7c673cae | 547 | |
1e59de90 TL |
548 | uint64_t raw_overlap; |
549 | int r = m_image_ctx.get_parent_overlap(CEPH_NOSNAP, &raw_overlap); | |
550 | ceph_assert(r == 0); | |
551 | auto overlap = m_image_ctx.reduce_parent_overlap(raw_overlap, false); | |
552 | uint64_t data_overlap_objects = Striper::get_num_objects( | |
553 | m_image_ctx.layout, | |
554 | (overlap.second == io::ImageArea::DATA ? overlap.first : 0)); | |
7c673cae | 555 | |
9f95a23c | 556 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae | 557 | |
1e59de90 | 558 | // leave encryption header flattening to format-specific handler |
7c673cae | 559 | operation::FlattenRequest<I> *req = new operation::FlattenRequest<I>( |
1e59de90 TL |
560 | m_image_ctx, new C_NotifyUpdate<I>(m_image_ctx, on_finish), |
561 | crypto_header_objects, data_overlap_objects, prog_ctx); | |
7c673cae FG |
562 | req->send(); |
563 | } | |
564 | ||
565 | template <typename I> | |
566 | int Operations<I>::rebuild_object_map(ProgressContext &prog_ctx) { | |
567 | CephContext *cct = m_image_ctx.cct; | |
568 | ldout(cct, 10) << "rebuild_object_map" << dendl; | |
569 | ||
570 | int r = m_image_ctx.state->refresh_if_required(); | |
571 | if (r < 0) { | |
572 | return r; | |
573 | } | |
574 | ||
f67539c2 TL |
575 | uint64_t request_id = util::reserve_async_request_id(); |
576 | r = invoke_async_request(OPERATION_REBUILD_OBJECT_MAP, | |
92f5a8d4 | 577 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, true, |
7c673cae FG |
578 | boost::bind(&Operations<I>::execute_rebuild_object_map, |
579 | this, boost::ref(prog_ctx), _1), | |
580 | boost::bind(&ImageWatcher<I>::notify_rebuild_object_map, | |
581 | m_image_ctx.image_watcher, request_id, | |
582 | boost::ref(prog_ctx), _1)); | |
583 | ||
584 | ldout(cct, 10) << "rebuild object map finished" << dendl; | |
585 | if (r < 0) { | |
586 | return r; | |
587 | } | |
588 | return 0; | |
589 | } | |
590 | ||
591 | template <typename I> | |
592 | void Operations<I>::execute_rebuild_object_map(ProgressContext &prog_ctx, | |
593 | Context *on_finish) { | |
9f95a23c | 594 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
11fdf7f2 TL |
595 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
596 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
7c673cae FG |
597 | |
598 | CephContext *cct = m_image_ctx.cct; | |
599 | ldout(cct, 5) << this << " " << __func__ << dendl; | |
600 | ||
11fdf7f2 | 601 | if (m_image_ctx.read_only || m_image_ctx.operations_disabled) { |
7c673cae FG |
602 | on_finish->complete(-EROFS); |
603 | return; | |
604 | } | |
11fdf7f2 | 605 | |
7c673cae FG |
606 | if (!m_image_ctx.test_features(RBD_FEATURE_OBJECT_MAP)) { |
607 | lderr(cct) << "image must support object-map feature" << dendl; | |
608 | on_finish->complete(-EINVAL); | |
609 | return; | |
610 | } | |
611 | ||
612 | operation::RebuildObjectMapRequest<I> *req = | |
613 | new operation::RebuildObjectMapRequest<I>( | |
614 | m_image_ctx, new C_NotifyUpdate<I>(m_image_ctx, on_finish), prog_ctx); | |
615 | req->send(); | |
616 | } | |
617 | ||
618 | template <typename I> | |
619 | int Operations<I>::check_object_map(ProgressContext &prog_ctx) { | |
620 | CephContext *cct = m_image_ctx.cct; | |
621 | ldout(cct, 5) << this << " " << __func__ << dendl; | |
622 | int r = m_image_ctx.state->refresh_if_required(); | |
623 | if (r < 0) { | |
624 | return r; | |
625 | } | |
626 | ||
f67539c2 | 627 | r = invoke_async_request(OPERATION_CHECK_OBJECT_MAP, |
92f5a8d4 | 628 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, true, |
7c673cae FG |
629 | boost::bind(&Operations<I>::check_object_map, this, |
630 | boost::ref(prog_ctx), _1), | |
94b18763 FG |
631 | [this](Context *c) { |
632 | m_image_ctx.op_work_queue->queue(c, -EOPNOTSUPP); | |
633 | }); | |
7c673cae FG |
634 | |
635 | return r; | |
636 | } | |
637 | ||
638 | template <typename I> | |
639 | void Operations<I>::object_map_iterate(ProgressContext &prog_ctx, | |
640 | operation::ObjectIterateWork<I> handle_mismatch, | |
641 | Context *on_finish) { | |
9f95a23c | 642 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
11fdf7f2 TL |
643 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
644 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
7c673cae FG |
645 | |
646 | if (!m_image_ctx.test_features(RBD_FEATURE_OBJECT_MAP)) { | |
647 | on_finish->complete(-EINVAL); | |
648 | return; | |
649 | } | |
650 | ||
651 | operation::ObjectMapIterateRequest<I> *req = | |
652 | new operation::ObjectMapIterateRequest<I>(m_image_ctx, on_finish, | |
653 | prog_ctx, handle_mismatch); | |
654 | req->send(); | |
655 | } | |
656 | ||
657 | template <typename I> | |
658 | void Operations<I>::check_object_map(ProgressContext &prog_ctx, | |
659 | Context *on_finish) { | |
660 | object_map_iterate(prog_ctx, needs_invalidate, on_finish); | |
661 | } | |
662 | ||
663 | template <typename I> | |
664 | int Operations<I>::rename(const char *dstname) { | |
665 | CephContext *cct = m_image_ctx.cct; | |
666 | ldout(cct, 5) << this << " " << __func__ << ": dest_name=" << dstname | |
667 | << dendl; | |
668 | ||
669 | int r = librbd::detect_format(m_image_ctx.md_ctx, dstname, NULL, NULL); | |
670 | if (r < 0 && r != -ENOENT) { | |
671 | lderr(cct) << "error checking for existing image called " | |
672 | << dstname << ":" << cpp_strerror(r) << dendl; | |
673 | return r; | |
674 | } | |
675 | if (r == 0) { | |
676 | lderr(cct) << "rbd image " << dstname << " already exists" << dendl; | |
677 | return -EEXIST; | |
678 | } | |
679 | ||
f67539c2 TL |
680 | uint64_t request_id = util::reserve_async_request_id(); |
681 | r = invoke_async_request(OPERATION_RENAME, | |
cd265ab1 TL |
682 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
683 | true, | |
684 | boost::bind(&Operations<I>::execute_rename, this, | |
685 | dstname, _1), | |
686 | boost::bind(&ImageWatcher<I>::notify_rename, | |
f67539c2 TL |
687 | m_image_ctx.image_watcher, request_id, |
688 | dstname, _1)); | |
cd265ab1 TL |
689 | if (r < 0 && r != -EEXIST) { |
690 | return r; | |
7c673cae FG |
691 | } |
692 | ||
693 | m_image_ctx.set_image_name(dstname); | |
694 | return 0; | |
695 | } | |
696 | ||
697 | template <typename I> | |
698 | void Operations<I>::execute_rename(const std::string &dest_name, | |
699 | Context *on_finish) { | |
9f95a23c | 700 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
7c673cae | 701 | if (m_image_ctx.test_features(RBD_FEATURE_JOURNALING)) { |
11fdf7f2 TL |
702 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
703 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
704 | } | |
705 | ||
706 | if (m_image_ctx.operations_disabled) { | |
707 | on_finish->complete(-EROFS); | |
708 | return; | |
7c673cae FG |
709 | } |
710 | ||
7c673cae FG |
711 | CephContext *cct = m_image_ctx.cct; |
712 | ldout(cct, 5) << this << " " << __func__ << ": dest_name=" << dest_name | |
713 | << dendl; | |
714 | ||
715 | if (m_image_ctx.old_format) { | |
cd265ab1 TL |
716 | m_image_ctx.image_lock.lock_shared(); |
717 | if (m_image_ctx.name == dest_name) { | |
718 | m_image_ctx.image_lock.unlock_shared(); | |
719 | on_finish->complete(-EEXIST); | |
720 | return; | |
721 | } | |
722 | m_image_ctx.image_lock.unlock_shared(); | |
723 | ||
7c673cae FG |
724 | // unregister watch before and register back after rename |
725 | on_finish = new C_NotifyUpdate<I>(m_image_ctx, on_finish); | |
9f95a23c | 726 | on_finish = new LambdaContext([this, on_finish](int r) { |
7c673cae FG |
727 | if (m_image_ctx.old_format) { |
728 | m_image_ctx.image_watcher->set_oid(m_image_ctx.header_oid); | |
729 | } | |
730 | m_image_ctx.image_watcher->register_watch(on_finish); | |
731 | }); | |
9f95a23c TL |
732 | on_finish = new LambdaContext([this, dest_name, on_finish](int r) { |
733 | std::shared_lock owner_locker{m_image_ctx.owner_lock}; | |
7c673cae FG |
734 | operation::RenameRequest<I> *req = new operation::RenameRequest<I>( |
735 | m_image_ctx, on_finish, dest_name); | |
736 | req->send(); | |
737 | }); | |
738 | m_image_ctx.image_watcher->unregister_watch(on_finish); | |
739 | return; | |
740 | } | |
741 | operation::RenameRequest<I> *req = new operation::RenameRequest<I>( | |
742 | m_image_ctx, on_finish, dest_name); | |
743 | req->send(); | |
744 | } | |
745 | ||
746 | template <typename I> | |
747 | int Operations<I>::resize(uint64_t size, bool allow_shrink, ProgressContext& prog_ctx) { | |
748 | CephContext *cct = m_image_ctx.cct; | |
749 | ||
9f95a23c | 750 | m_image_ctx.image_lock.lock_shared(); |
1e59de90 TL |
751 | uint64_t raw_size = io::util::area_to_raw_offset(m_image_ctx, size, |
752 | io::ImageArea::DATA); | |
753 | ldout(cct, 5) << this << " " << __func__ | |
754 | << ": size=" << size | |
755 | << " raw_size=" << m_image_ctx.size | |
756 | << " new_raw_size=" << raw_size << dendl; | |
9f95a23c | 757 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
758 | |
759 | int r = m_image_ctx.state->refresh_if_required(); | |
760 | if (r < 0) { | |
761 | return r; | |
762 | } | |
763 | ||
764 | if (m_image_ctx.test_features(RBD_FEATURE_OBJECT_MAP) && | |
1e59de90 | 765 | !ObjectMap<>::is_compatible(m_image_ctx.layout, raw_size)) { |
7c673cae FG |
766 | lderr(cct) << "New size not compatible with object map" << dendl; |
767 | return -EINVAL; | |
768 | } | |
769 | ||
f67539c2 TL |
770 | uint64_t request_id = util::reserve_async_request_id(); |
771 | r = invoke_async_request(OPERATION_RESIZE, | |
92f5a8d4 TL |
772 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
773 | false, | |
7c673cae FG |
774 | boost::bind(&Operations<I>::execute_resize, this, |
775 | size, allow_shrink, boost::ref(prog_ctx), _1, 0), | |
776 | boost::bind(&ImageWatcher<I>::notify_resize, | |
777 | m_image_ctx.image_watcher, request_id, | |
778 | size, allow_shrink, boost::ref(prog_ctx), _1)); | |
779 | ||
780 | m_image_ctx.perfcounter->inc(l_librbd_resize); | |
781 | ldout(cct, 2) << "resize finished" << dendl; | |
782 | return r; | |
783 | } | |
784 | ||
785 | template <typename I> | |
786 | void Operations<I>::execute_resize(uint64_t size, bool allow_shrink, ProgressContext &prog_ctx, | |
787 | Context *on_finish, | |
788 | uint64_t journal_op_tid) { | |
9f95a23c | 789 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
11fdf7f2 TL |
790 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
791 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
7c673cae FG |
792 | |
793 | CephContext *cct = m_image_ctx.cct; | |
9f95a23c | 794 | m_image_ctx.image_lock.lock_shared(); |
1e59de90 TL |
795 | uint64_t raw_size = io::util::area_to_raw_offset(m_image_ctx, size, |
796 | io::ImageArea::DATA); | |
797 | ldout(cct, 5) << this << " " << __func__ | |
798 | << ": size=" << size | |
799 | << " raw_size=" << m_image_ctx.size | |
800 | << " new_raw_size=" << raw_size << dendl; | |
7c673cae | 801 | |
11fdf7f2 TL |
802 | if (m_image_ctx.snap_id != CEPH_NOSNAP || m_image_ctx.read_only || |
803 | m_image_ctx.operations_disabled) { | |
9f95a23c | 804 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
805 | on_finish->complete(-EROFS); |
806 | return; | |
807 | } else if (m_image_ctx.test_features(RBD_FEATURE_OBJECT_MAP, | |
9f95a23c | 808 | m_image_ctx.image_lock) && |
1e59de90 | 809 | !ObjectMap<>::is_compatible(m_image_ctx.layout, raw_size)) { |
9f95a23c | 810 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
811 | on_finish->complete(-EINVAL); |
812 | return; | |
813 | } | |
9f95a23c | 814 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
815 | |
816 | operation::ResizeRequest<I> *req = new operation::ResizeRequest<I>( | |
1e59de90 TL |
817 | m_image_ctx, new C_NotifyUpdate<I>(m_image_ctx, on_finish), raw_size, |
818 | allow_shrink, prog_ctx, journal_op_tid, false); | |
7c673cae FG |
819 | req->send(); |
820 | } | |
821 | ||
822 | template <typename I> | |
823 | int Operations<I>::snap_create(const cls::rbd::SnapshotNamespace &snap_namespace, | |
f67539c2 TL |
824 | const std::string& snap_name, uint64_t flags, |
825 | ProgressContext &prog_ctx) { | |
7c673cae FG |
826 | if (m_image_ctx.read_only) { |
827 | return -EROFS; | |
828 | } | |
829 | ||
830 | int r = m_image_ctx.state->refresh_if_required(); | |
831 | if (r < 0) { | |
832 | return r; | |
833 | } | |
834 | ||
835 | C_SaferCond ctx; | |
f67539c2 | 836 | snap_create(snap_namespace, snap_name, flags, prog_ctx, &ctx); |
7c673cae FG |
837 | r = ctx.wait(); |
838 | ||
839 | if (r < 0) { | |
840 | return r; | |
841 | } | |
842 | ||
843 | m_image_ctx.perfcounter->inc(l_librbd_snap_create); | |
844 | return r; | |
845 | } | |
846 | ||
847 | template <typename I> | |
848 | void Operations<I>::snap_create(const cls::rbd::SnapshotNamespace &snap_namespace, | |
f67539c2 TL |
849 | const std::string& snap_name, uint64_t flags, |
850 | ProgressContext &prog_ctx, Context *on_finish) { | |
7c673cae FG |
851 | CephContext *cct = m_image_ctx.cct; |
852 | ldout(cct, 5) << this << " " << __func__ << ": snap_name=" << snap_name | |
853 | << dendl; | |
854 | ||
855 | if (m_image_ctx.read_only) { | |
856 | on_finish->complete(-EROFS); | |
857 | return; | |
858 | } | |
859 | ||
9f95a23c | 860 | m_image_ctx.image_lock.lock_shared(); |
7c673cae | 861 | if (m_image_ctx.get_snap_id(snap_namespace, snap_name) != CEPH_NOSNAP) { |
9f95a23c | 862 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
863 | on_finish->complete(-EEXIST); |
864 | return; | |
865 | } | |
9f95a23c | 866 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae | 867 | |
f67539c2 | 868 | uint64_t request_id = util::reserve_async_request_id(); |
7c673cae | 869 | C_InvokeAsyncRequest<I> *req = new C_InvokeAsyncRequest<I>( |
f67539c2 TL |
870 | m_image_ctx, OPERATION_SNAP_CREATE, |
871 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, true, | |
7c673cae | 872 | boost::bind(&Operations<I>::execute_snap_create, this, snap_namespace, snap_name, |
f67539c2 | 873 | _1, 0, flags, boost::ref(prog_ctx)), |
7c673cae | 874 | boost::bind(&ImageWatcher<I>::notify_snap_create, m_image_ctx.image_watcher, |
f67539c2 TL |
875 | request_id, snap_namespace, snap_name, flags, |
876 | boost::ref(prog_ctx), _1), | |
7c673cae FG |
877 | {-EEXIST}, on_finish); |
878 | req->send(); | |
879 | } | |
880 | ||
881 | template <typename I> | |
882 | void Operations<I>::execute_snap_create(const cls::rbd::SnapshotNamespace &snap_namespace, | |
883 | const std::string &snap_name, | |
884 | Context *on_finish, | |
885 | uint64_t journal_op_tid, | |
f67539c2 TL |
886 | uint64_t flags, |
887 | ProgressContext &prog_ctx) { | |
9f95a23c | 888 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
11fdf7f2 TL |
889 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
890 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
7c673cae FG |
891 | |
892 | CephContext *cct = m_image_ctx.cct; | |
893 | ldout(cct, 5) << this << " " << __func__ << ": snap_name=" << snap_name | |
894 | << dendl; | |
895 | ||
11fdf7f2 TL |
896 | if (m_image_ctx.operations_disabled) { |
897 | on_finish->complete(-EROFS); | |
898 | return; | |
899 | } | |
900 | ||
9f95a23c | 901 | m_image_ctx.image_lock.lock_shared(); |
7c673cae | 902 | if (m_image_ctx.get_snap_id(snap_namespace, snap_name) != CEPH_NOSNAP) { |
9f95a23c | 903 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
904 | on_finish->complete(-EEXIST); |
905 | return; | |
906 | } | |
9f95a23c | 907 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
908 | |
909 | operation::SnapshotCreateRequest<I> *req = | |
910 | new operation::SnapshotCreateRequest<I>( | |
911 | m_image_ctx, new C_NotifyUpdate<I>(m_image_ctx, on_finish), | |
f67539c2 | 912 | snap_namespace, snap_name, journal_op_tid, flags, prog_ctx); |
7c673cae FG |
913 | req->send(); |
914 | } | |
915 | ||
916 | template <typename I> | |
917 | int Operations<I>::snap_rollback(const cls::rbd::SnapshotNamespace& snap_namespace, | |
91327a77 | 918 | const std::string& snap_name, |
7c673cae FG |
919 | ProgressContext& prog_ctx) { |
920 | CephContext *cct = m_image_ctx.cct; | |
921 | ldout(cct, 5) << this << " " << __func__ << ": snap_name=" << snap_name | |
922 | << dendl; | |
923 | ||
924 | int r = m_image_ctx.state->refresh_if_required(); | |
925 | if (r < 0) | |
926 | return r; | |
927 | ||
b32b8144 | 928 | C_SaferCond cond_ctx; |
7c673cae | 929 | { |
9f95a23c | 930 | std::shared_lock owner_locker{m_image_ctx.owner_lock}; |
b32b8144 | 931 | { |
9f95a23c TL |
932 | // need to drop image_lock before invalidating cache |
933 | std::shared_lock image_locker{m_image_ctx.image_lock}; | |
b32b8144 FG |
934 | if (!m_image_ctx.snap_exists) { |
935 | return -ENOENT; | |
936 | } | |
7c673cae | 937 | |
b32b8144 FG |
938 | if (m_image_ctx.snap_id != CEPH_NOSNAP || m_image_ctx.read_only) { |
939 | return -EROFS; | |
940 | } | |
941 | ||
942 | uint64_t snap_id = m_image_ctx.get_snap_id(snap_namespace, snap_name); | |
943 | if (snap_id == CEPH_NOSNAP) { | |
944 | lderr(cct) << "No such snapshot found." << dendl; | |
945 | return -ENOENT; | |
946 | } | |
7c673cae FG |
947 | } |
948 | ||
92f5a8d4 TL |
949 | r = prepare_image_update(exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
950 | false); | |
b32b8144 | 951 | if (r < 0) { |
91327a77 | 952 | return r; |
7c673cae | 953 | } |
7c673cae | 954 | |
f67539c2 TL |
955 | Context *ctx = new LambdaContext( |
956 | [this, ctx=&cond_ctx](int r) { | |
957 | m_image_ctx.operations->finish_op(OPERATION_SNAP_ROLLBACK, r); | |
958 | ctx->complete(r); | |
959 | }); | |
960 | ctx = new LambdaContext( | |
961 | [this, snap_namespace, snap_name, &prog_ctx, ctx](int r) { | |
962 | if (r < 0) { | |
963 | ctx->complete(r); | |
964 | return; | |
965 | } | |
966 | std::shared_lock l{m_image_ctx.owner_lock}; | |
967 | execute_snap_rollback(snap_namespace, snap_name, prog_ctx, ctx); | |
968 | }); | |
969 | ||
970 | m_image_ctx.operations->start_op(OPERATION_SNAP_ROLLBACK, ctx); | |
7c673cae FG |
971 | } |
972 | ||
7c673cae FG |
973 | r = cond_ctx.wait(); |
974 | if (r < 0) { | |
975 | return r; | |
976 | } | |
977 | ||
978 | m_image_ctx.perfcounter->inc(l_librbd_snap_rollback); | |
979 | return r; | |
980 | } | |
981 | ||
982 | template <typename I> | |
983 | void Operations<I>::execute_snap_rollback(const cls::rbd::SnapshotNamespace& snap_namespace, | |
984 | const std::string &snap_name, | |
985 | ProgressContext& prog_ctx, | |
986 | Context *on_finish) { | |
9f95a23c | 987 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
7c673cae FG |
988 | CephContext *cct = m_image_ctx.cct; |
989 | ldout(cct, 5) << this << " " << __func__ << ": snap_name=" << snap_name | |
990 | << dendl; | |
991 | ||
11fdf7f2 TL |
992 | if (m_image_ctx.operations_disabled) { |
993 | on_finish->complete(-EROFS); | |
994 | return; | |
995 | } | |
996 | ||
9f95a23c | 997 | m_image_ctx.image_lock.lock_shared(); |
7c673cae FG |
998 | uint64_t snap_id = m_image_ctx.get_snap_id(snap_namespace, snap_name); |
999 | if (snap_id == CEPH_NOSNAP) { | |
1000 | lderr(cct) << "No such snapshot found." << dendl; | |
9f95a23c | 1001 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1002 | on_finish->complete(-ENOENT); |
1003 | return; | |
1004 | } | |
1005 | ||
1006 | uint64_t new_size = m_image_ctx.get_image_size(snap_id); | |
9f95a23c | 1007 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1008 | |
1009 | // async mode used for journal replay | |
1010 | operation::SnapshotRollbackRequest<I> *request = | |
1011 | new operation::SnapshotRollbackRequest<I>( | |
1012 | m_image_ctx, new C_NotifyUpdate<I>(m_image_ctx, on_finish), snap_namespace, snap_name, | |
1013 | snap_id, new_size, prog_ctx); | |
1014 | request->send(); | |
1015 | } | |
1016 | ||
1017 | template <typename I> | |
1018 | int Operations<I>::snap_remove(const cls::rbd::SnapshotNamespace& snap_namespace, | |
91327a77 | 1019 | const std::string& snap_name) { |
7c673cae FG |
1020 | if (m_image_ctx.read_only) { |
1021 | return -EROFS; | |
1022 | } | |
1023 | ||
1024 | int r = m_image_ctx.state->refresh_if_required(); | |
1025 | if (r < 0) { | |
1026 | return r; | |
1027 | } | |
1028 | ||
1029 | C_SaferCond ctx; | |
1030 | snap_remove(snap_namespace, snap_name, &ctx); | |
1031 | r = ctx.wait(); | |
1032 | ||
1033 | if (r < 0) { | |
1034 | return r; | |
1035 | } | |
1036 | ||
1037 | m_image_ctx.perfcounter->inc(l_librbd_snap_remove); | |
1038 | return 0; | |
1039 | } | |
1040 | ||
1041 | template <typename I> | |
1042 | void Operations<I>::snap_remove(const cls::rbd::SnapshotNamespace& snap_namespace, | |
91327a77 | 1043 | const std::string& snap_name, |
7c673cae FG |
1044 | Context *on_finish) { |
1045 | CephContext *cct = m_image_ctx.cct; | |
1046 | ldout(cct, 5) << this << " " << __func__ << ": snap_name=" << snap_name | |
1047 | << dendl; | |
1048 | ||
1049 | if (m_image_ctx.read_only) { | |
1050 | on_finish->complete(-EROFS); | |
1051 | return; | |
1052 | } | |
1053 | ||
1054 | // quickly filter out duplicate ops | |
9f95a23c | 1055 | m_image_ctx.image_lock.lock_shared(); |
7c673cae | 1056 | if (m_image_ctx.get_snap_id(snap_namespace, snap_name) == CEPH_NOSNAP) { |
9f95a23c | 1057 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1058 | on_finish->complete(-ENOENT); |
1059 | return; | |
1060 | } | |
1061 | ||
1062 | bool proxy_op = ((m_image_ctx.features & RBD_FEATURE_FAST_DIFF) != 0 || | |
1063 | (m_image_ctx.features & RBD_FEATURE_JOURNALING) != 0); | |
9f95a23c | 1064 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1065 | |
1066 | if (proxy_op) { | |
f67539c2 | 1067 | uint64_t request_id = util::reserve_async_request_id(); |
92f5a8d4 TL |
1068 | auto request_type = exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL; |
1069 | if (cls::rbd::get_snap_namespace_type(snap_namespace) == | |
1070 | cls::rbd::SNAPSHOT_NAMESPACE_TYPE_TRASH) { | |
1071 | request_type = exclusive_lock::OPERATION_REQUEST_TYPE_TRASH_SNAP_REMOVE; | |
1072 | } | |
7c673cae | 1073 | C_InvokeAsyncRequest<I> *req = new C_InvokeAsyncRequest<I>( |
f67539c2 TL |
1074 | m_image_ctx, OPERATION_SNAP_REMOVE, request_type, true, |
1075 | boost::bind(&Operations<I>::execute_snap_remove, this, snap_namespace, | |
1076 | snap_name, _1), | |
1077 | boost::bind(&ImageWatcher<I>::notify_snap_remove, | |
1078 | m_image_ctx.image_watcher, request_id, snap_namespace, | |
1079 | snap_name, _1), | |
7c673cae FG |
1080 | {-ENOENT}, on_finish); |
1081 | req->send(); | |
1082 | } else { | |
9f95a23c | 1083 | std::shared_lock owner_lock{m_image_ctx.owner_lock}; |
7c673cae FG |
1084 | execute_snap_remove(snap_namespace, snap_name, on_finish); |
1085 | } | |
1086 | } | |
1087 | ||
1088 | template <typename I> | |
1089 | void Operations<I>::execute_snap_remove(const cls::rbd::SnapshotNamespace& snap_namespace, | |
1090 | const std::string &snap_name, | |
1091 | Context *on_finish) { | |
9f95a23c | 1092 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
7c673cae FG |
1093 | { |
1094 | if ((m_image_ctx.features & RBD_FEATURE_FAST_DIFF) != 0) { | |
11fdf7f2 TL |
1095 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
1096 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
7c673cae FG |
1097 | } |
1098 | } | |
1099 | ||
1100 | CephContext *cct = m_image_ctx.cct; | |
1101 | ldout(cct, 5) << this << " " << __func__ << ": snap_name=" << snap_name | |
1102 | << dendl; | |
1103 | ||
11fdf7f2 TL |
1104 | if (m_image_ctx.operations_disabled) { |
1105 | on_finish->complete(-EROFS); | |
1106 | return; | |
1107 | } | |
1108 | ||
9f95a23c | 1109 | m_image_ctx.image_lock.lock_shared(); |
7c673cae FG |
1110 | uint64_t snap_id = m_image_ctx.get_snap_id(snap_namespace, snap_name); |
1111 | if (snap_id == CEPH_NOSNAP) { | |
1112 | lderr(m_image_ctx.cct) << "No such snapshot found." << dendl; | |
9f95a23c | 1113 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1114 | on_finish->complete(-ENOENT); |
1115 | return; | |
1116 | } | |
1117 | ||
1118 | bool is_protected; | |
1119 | int r = m_image_ctx.is_snap_protected(snap_id, &is_protected); | |
1120 | if (r < 0) { | |
9f95a23c | 1121 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1122 | on_finish->complete(r); |
1123 | return; | |
1124 | } else if (is_protected) { | |
1125 | lderr(m_image_ctx.cct) << "snapshot is protected" << dendl; | |
9f95a23c | 1126 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1127 | on_finish->complete(-EBUSY); |
1128 | return; | |
1129 | } | |
9f95a23c | 1130 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1131 | |
1132 | operation::SnapshotRemoveRequest<I> *req = | |
1133 | new operation::SnapshotRemoveRequest<I>( | |
1134 | m_image_ctx, new C_NotifyUpdate<I>(m_image_ctx, on_finish), | |
1135 | snap_namespace, snap_name, snap_id); | |
1136 | req->send(); | |
1137 | } | |
1138 | ||
1139 | template <typename I> | |
1140 | int Operations<I>::snap_rename(const char *srcname, const char *dstname) { | |
1141 | CephContext *cct = m_image_ctx.cct; | |
1142 | ldout(cct, 5) << this << " " << __func__ << ": " | |
1143 | << "snap_name=" << srcname << ", " | |
1144 | << "new_snap_name=" << dstname << dendl; | |
1145 | ||
1146 | snapid_t snap_id; | |
1147 | if (m_image_ctx.read_only) { | |
1148 | return -EROFS; | |
1149 | } | |
1150 | ||
1151 | int r = m_image_ctx.state->refresh_if_required(); | |
1152 | if (r < 0) | |
1153 | return r; | |
1154 | ||
1155 | { | |
9f95a23c | 1156 | std::shared_lock l{m_image_ctx.image_lock}; |
7c673cae FG |
1157 | snap_id = m_image_ctx.get_snap_id(cls::rbd::UserSnapshotNamespace(), srcname); |
1158 | if (snap_id == CEPH_NOSNAP) { | |
1159 | return -ENOENT; | |
1160 | } | |
1161 | if (m_image_ctx.get_snap_id(cls::rbd::UserSnapshotNamespace(), dstname) != CEPH_NOSNAP) { | |
1162 | return -EEXIST; | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | if (m_image_ctx.test_features(RBD_FEATURE_JOURNALING)) { | |
f67539c2 TL |
1167 | uint64_t request_id = util::reserve_async_request_id(); |
1168 | r = invoke_async_request(OPERATION_SNAP_RENAME, | |
92f5a8d4 TL |
1169 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
1170 | true, | |
7c673cae FG |
1171 | boost::bind(&Operations<I>::execute_snap_rename, |
1172 | this, snap_id, dstname, _1), | |
1173 | boost::bind(&ImageWatcher<I>::notify_snap_rename, | |
f67539c2 TL |
1174 | m_image_ctx.image_watcher, request_id, |
1175 | snap_id, dstname, _1)); | |
7c673cae FG |
1176 | if (r < 0 && r != -EEXIST) { |
1177 | return r; | |
1178 | } | |
1179 | } else { | |
7c673cae | 1180 | C_SaferCond cond_ctx; |
b32b8144 | 1181 | { |
9f95a23c | 1182 | std::shared_lock owner_lock{m_image_ctx.owner_lock}; |
b32b8144 FG |
1183 | execute_snap_rename(snap_id, dstname, &cond_ctx); |
1184 | } | |
7c673cae FG |
1185 | |
1186 | r = cond_ctx.wait(); | |
1187 | if (r < 0) { | |
1188 | return r; | |
1189 | } | |
1190 | } | |
1191 | ||
1192 | m_image_ctx.perfcounter->inc(l_librbd_snap_rename); | |
1193 | return 0; | |
1194 | } | |
1195 | ||
1196 | template <typename I> | |
1197 | void Operations<I>::execute_snap_rename(const uint64_t src_snap_id, | |
1198 | const std::string &dest_snap_name, | |
1199 | Context *on_finish) { | |
9f95a23c | 1200 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
7c673cae | 1201 | if ((m_image_ctx.features & RBD_FEATURE_JOURNALING) != 0) { |
11fdf7f2 TL |
1202 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
1203 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
1204 | } | |
1205 | ||
1206 | if (m_image_ctx.operations_disabled) { | |
1207 | on_finish->complete(-EROFS); | |
1208 | return; | |
7c673cae FG |
1209 | } |
1210 | ||
9f95a23c | 1211 | m_image_ctx.image_lock.lock_shared(); |
7c673cae FG |
1212 | if (m_image_ctx.get_snap_id(cls::rbd::UserSnapshotNamespace(), |
1213 | dest_snap_name) != CEPH_NOSNAP) { | |
1214 | // Renaming is supported for snapshots from user namespace only. | |
9f95a23c | 1215 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1216 | on_finish->complete(-EEXIST); |
1217 | return; | |
1218 | } | |
9f95a23c | 1219 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1220 | |
1221 | CephContext *cct = m_image_ctx.cct; | |
1222 | ldout(cct, 5) << this << " " << __func__ << ": " | |
1223 | << "snap_id=" << src_snap_id << ", " | |
1224 | << "new_snap_name=" << dest_snap_name << dendl; | |
1225 | ||
1226 | operation::SnapshotRenameRequest<I> *req = | |
1227 | new operation::SnapshotRenameRequest<I>( | |
1228 | m_image_ctx, new C_NotifyUpdate<I>(m_image_ctx, on_finish), src_snap_id, | |
1229 | dest_snap_name); | |
1230 | req->send(); | |
1231 | } | |
1232 | ||
1233 | template <typename I> | |
1234 | int Operations<I>::snap_protect(const cls::rbd::SnapshotNamespace& snap_namespace, | |
91327a77 | 1235 | const std::string& snap_name) { |
7c673cae FG |
1236 | CephContext *cct = m_image_ctx.cct; |
1237 | ldout(cct, 5) << this << " " << __func__ << ": snap_name=" << snap_name | |
1238 | << dendl; | |
1239 | ||
1240 | if (m_image_ctx.read_only) { | |
1241 | return -EROFS; | |
1242 | } | |
1243 | ||
1244 | if (!m_image_ctx.test_features(RBD_FEATURE_LAYERING)) { | |
1245 | lderr(cct) << "image must support layering" << dendl; | |
1246 | return -ENOSYS; | |
1247 | } | |
1248 | ||
1249 | int r = m_image_ctx.state->refresh_if_required(); | |
1250 | if (r < 0) { | |
1251 | return r; | |
1252 | } | |
1253 | ||
1254 | { | |
9f95a23c | 1255 | std::shared_lock image_locker{m_image_ctx.image_lock}; |
7c673cae FG |
1256 | bool is_protected; |
1257 | r = m_image_ctx.is_snap_protected(m_image_ctx.get_snap_id(snap_namespace, snap_name), | |
1258 | &is_protected); | |
1259 | if (r < 0) { | |
1260 | return r; | |
1261 | } | |
1262 | ||
1263 | if (is_protected) { | |
1264 | return -EBUSY; | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | if (m_image_ctx.test_features(RBD_FEATURE_JOURNALING)) { | |
f67539c2 TL |
1269 | uint64_t request_id = util::reserve_async_request_id(); |
1270 | r = invoke_async_request(OPERATION_SNAP_PROTECT, | |
92f5a8d4 TL |
1271 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
1272 | true, | |
7c673cae FG |
1273 | boost::bind(&Operations<I>::execute_snap_protect, |
1274 | this, snap_namespace, snap_name, _1), | |
1275 | boost::bind(&ImageWatcher<I>::notify_snap_protect, | |
f67539c2 | 1276 | m_image_ctx.image_watcher, request_id, |
7c673cae FG |
1277 | snap_namespace, snap_name, _1)); |
1278 | if (r < 0 && r != -EBUSY) { | |
1279 | return r; | |
1280 | } | |
1281 | } else { | |
7c673cae | 1282 | C_SaferCond cond_ctx; |
b32b8144 | 1283 | { |
9f95a23c | 1284 | std::shared_lock owner_lock{m_image_ctx.owner_lock}; |
b32b8144 FG |
1285 | execute_snap_protect(snap_namespace, snap_name, &cond_ctx); |
1286 | } | |
7c673cae FG |
1287 | |
1288 | r = cond_ctx.wait(); | |
1289 | if (r < 0) { | |
1290 | return r; | |
1291 | } | |
1292 | } | |
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | template <typename I> | |
1297 | void Operations<I>::execute_snap_protect(const cls::rbd::SnapshotNamespace& snap_namespace, | |
1298 | const std::string &snap_name, | |
1299 | Context *on_finish) { | |
9f95a23c | 1300 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
7c673cae | 1301 | if (m_image_ctx.test_features(RBD_FEATURE_JOURNALING)) { |
11fdf7f2 TL |
1302 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
1303 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
1304 | } | |
1305 | ||
1306 | if (m_image_ctx.operations_disabled) { | |
1307 | on_finish->complete(-EROFS); | |
1308 | return; | |
7c673cae FG |
1309 | } |
1310 | ||
9f95a23c | 1311 | m_image_ctx.image_lock.lock_shared(); |
7c673cae FG |
1312 | bool is_protected; |
1313 | int r = m_image_ctx.is_snap_protected(m_image_ctx.get_snap_id(snap_namespace, snap_name), | |
1314 | &is_protected); | |
1315 | if (r < 0) { | |
9f95a23c | 1316 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1317 | on_finish->complete(r); |
1318 | return; | |
1319 | } else if (is_protected) { | |
9f95a23c | 1320 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1321 | on_finish->complete(-EBUSY); |
1322 | return; | |
1323 | } | |
9f95a23c | 1324 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1325 | |
1326 | CephContext *cct = m_image_ctx.cct; | |
1327 | ldout(cct, 5) << this << " " << __func__ << ": snap_name=" << snap_name | |
1328 | << dendl; | |
1329 | ||
1330 | operation::SnapshotProtectRequest<I> *request = | |
1331 | new operation::SnapshotProtectRequest<I>( | |
1332 | m_image_ctx, new C_NotifyUpdate<I>(m_image_ctx, on_finish), snap_namespace, snap_name); | |
1333 | request->send(); | |
1334 | } | |
1335 | ||
1336 | template <typename I> | |
1337 | int Operations<I>::snap_unprotect(const cls::rbd::SnapshotNamespace& snap_namespace, | |
91327a77 | 1338 | const std::string& snap_name) { |
7c673cae FG |
1339 | CephContext *cct = m_image_ctx.cct; |
1340 | ldout(cct, 5) << this << " " << __func__ << ": snap_name=" << snap_name | |
1341 | << dendl; | |
1342 | ||
1343 | if (m_image_ctx.read_only) { | |
1344 | return -EROFS; | |
1345 | } | |
1346 | ||
1347 | int r = m_image_ctx.state->refresh_if_required(); | |
1348 | if (r < 0) { | |
1349 | return r; | |
1350 | } | |
1351 | ||
1352 | { | |
9f95a23c | 1353 | std::shared_lock image_locker{m_image_ctx.image_lock}; |
7c673cae FG |
1354 | bool is_unprotected; |
1355 | r = m_image_ctx.is_snap_unprotected(m_image_ctx.get_snap_id(snap_namespace, snap_name), | |
1356 | &is_unprotected); | |
1357 | if (r < 0) { | |
1358 | return r; | |
1359 | } | |
1360 | ||
1361 | if (is_unprotected) { | |
1362 | return -EINVAL; | |
1363 | } | |
1364 | } | |
1365 | ||
1366 | if (m_image_ctx.test_features(RBD_FEATURE_JOURNALING)) { | |
f67539c2 TL |
1367 | uint64_t request_id = util::reserve_async_request_id(); |
1368 | r = invoke_async_request(OPERATION_SNAP_UNPROTECT, | |
92f5a8d4 TL |
1369 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
1370 | true, | |
7c673cae FG |
1371 | boost::bind(&Operations<I>::execute_snap_unprotect, |
1372 | this, snap_namespace, snap_name, _1), | |
1373 | boost::bind(&ImageWatcher<I>::notify_snap_unprotect, | |
f67539c2 | 1374 | m_image_ctx.image_watcher, request_id, |
7c673cae FG |
1375 | snap_namespace, snap_name, _1)); |
1376 | if (r < 0 && r != -EINVAL) { | |
1377 | return r; | |
1378 | } | |
1379 | } else { | |
7c673cae | 1380 | C_SaferCond cond_ctx; |
b32b8144 | 1381 | { |
9f95a23c | 1382 | std::shared_lock owner_lock{m_image_ctx.owner_lock}; |
b32b8144 FG |
1383 | execute_snap_unprotect(snap_namespace, snap_name, &cond_ctx); |
1384 | } | |
7c673cae FG |
1385 | |
1386 | r = cond_ctx.wait(); | |
1387 | if (r < 0) { | |
1388 | return r; | |
1389 | } | |
1390 | } | |
1391 | return 0; | |
1392 | } | |
1393 | ||
1394 | template <typename I> | |
1395 | void Operations<I>::execute_snap_unprotect(const cls::rbd::SnapshotNamespace& snap_namespace, | |
1396 | const std::string &snap_name, | |
1397 | Context *on_finish) { | |
9f95a23c | 1398 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
7c673cae | 1399 | if (m_image_ctx.test_features(RBD_FEATURE_JOURNALING)) { |
11fdf7f2 TL |
1400 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
1401 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
1402 | } | |
1403 | ||
1404 | if (m_image_ctx.operations_disabled) { | |
1405 | on_finish->complete(-EROFS); | |
1406 | return; | |
7c673cae FG |
1407 | } |
1408 | ||
9f95a23c | 1409 | m_image_ctx.image_lock.lock_shared(); |
7c673cae FG |
1410 | bool is_unprotected; |
1411 | int r = m_image_ctx.is_snap_unprotected(m_image_ctx.get_snap_id(snap_namespace, snap_name), | |
1412 | &is_unprotected); | |
1413 | if (r < 0) { | |
9f95a23c | 1414 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1415 | on_finish->complete(r); |
1416 | return; | |
1417 | } else if (is_unprotected) { | |
9f95a23c | 1418 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1419 | on_finish->complete(-EINVAL); |
1420 | return; | |
1421 | } | |
9f95a23c | 1422 | m_image_ctx.image_lock.unlock_shared(); |
7c673cae FG |
1423 | |
1424 | CephContext *cct = m_image_ctx.cct; | |
1425 | ldout(cct, 5) << this << " " << __func__ << ": snap_name=" << snap_name | |
1426 | << dendl; | |
1427 | ||
1428 | operation::SnapshotUnprotectRequest<I> *request = | |
1429 | new operation::SnapshotUnprotectRequest<I>( | |
1430 | m_image_ctx, new C_NotifyUpdate<I>(m_image_ctx, on_finish), snap_namespace, snap_name); | |
1431 | request->send(); | |
1432 | } | |
1433 | ||
1434 | template <typename I> | |
1435 | int Operations<I>::snap_set_limit(uint64_t limit) { | |
1436 | CephContext *cct = m_image_ctx.cct; | |
1437 | ldout(cct, 5) << this << " " << __func__ << ": limit=" << limit << dendl; | |
1438 | ||
1439 | if (m_image_ctx.read_only) { | |
1440 | return -EROFS; | |
1441 | } | |
1442 | ||
1443 | int r = m_image_ctx.state->refresh_if_required(); | |
1444 | if (r < 0) { | |
1445 | return r; | |
1446 | } | |
1447 | ||
b32b8144 | 1448 | C_SaferCond limit_ctx; |
7c673cae | 1449 | { |
9f95a23c | 1450 | std::shared_lock owner_lock{m_image_ctx.owner_lock}; |
92f5a8d4 TL |
1451 | r = prepare_image_update(exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
1452 | true); | |
b32b8144 FG |
1453 | if (r < 0) { |
1454 | return r; | |
7c673cae FG |
1455 | } |
1456 | ||
1457 | execute_snap_set_limit(limit, &limit_ctx); | |
7c673cae FG |
1458 | } |
1459 | ||
b32b8144 | 1460 | r = limit_ctx.wait(); |
7c673cae FG |
1461 | return r; |
1462 | } | |
1463 | ||
1464 | template <typename I> | |
1465 | void Operations<I>::execute_snap_set_limit(const uint64_t limit, | |
1466 | Context *on_finish) { | |
9f95a23c | 1467 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
7c673cae FG |
1468 | |
1469 | CephContext *cct = m_image_ctx.cct; | |
1470 | ldout(cct, 5) << this << " " << __func__ << ": limit=" << limit | |
1471 | << dendl; | |
1472 | ||
1473 | operation::SnapshotLimitRequest<I> *request = | |
1474 | new operation::SnapshotLimitRequest<I>(m_image_ctx, on_finish, limit); | |
1475 | request->send(); | |
1476 | } | |
1477 | ||
1478 | template <typename I> | |
1479 | int Operations<I>::update_features(uint64_t features, bool enabled) { | |
1480 | CephContext *cct = m_image_ctx.cct; | |
1481 | ldout(cct, 5) << this << " " << __func__ << ": features=" << features | |
1482 | << ", enabled=" << enabled << dendl; | |
1483 | ||
1484 | int r = m_image_ctx.state->refresh_if_required(); | |
1485 | if (r < 0) { | |
1486 | return r; | |
1487 | } | |
1488 | ||
1489 | if (m_image_ctx.read_only) { | |
1490 | return -EROFS; | |
1491 | } else if (m_image_ctx.old_format) { | |
1492 | lderr(cct) << "old-format images do not support features" << dendl; | |
1493 | return -EINVAL; | |
1494 | } | |
1495 | ||
1496 | uint64_t disable_mask = (RBD_FEATURES_MUTABLE | | |
1497 | RBD_FEATURES_DISABLE_ONLY); | |
1498 | if ((enabled && (features & RBD_FEATURES_MUTABLE) != features) || | |
9f95a23c TL |
1499 | (!enabled && (features & disable_mask) != features) || |
1500 | ((features & ~RBD_FEATURES_MUTABLE_INTERNAL) != features)) { | |
7c673cae FG |
1501 | lderr(cct) << "cannot update immutable features" << dendl; |
1502 | return -EINVAL; | |
1503 | } | |
11fdf7f2 TL |
1504 | |
1505 | bool set_object_map = (features & RBD_FEATURE_OBJECT_MAP) == RBD_FEATURE_OBJECT_MAP; | |
1506 | bool set_fast_diff = (features & RBD_FEATURE_FAST_DIFF) == RBD_FEATURE_FAST_DIFF; | |
1507 | bool exist_fast_diff = (m_image_ctx.features & RBD_FEATURE_FAST_DIFF) != 0; | |
1508 | bool exist_object_map = (m_image_ctx.features & RBD_FEATURE_OBJECT_MAP) != 0; | |
1509 | ||
1510 | if ((enabled && ((set_object_map && !exist_fast_diff) || (set_fast_diff && !exist_object_map))) | |
1511 | || (!enabled && (set_object_map && exist_fast_diff))) { | |
1512 | features |= (RBD_FEATURE_OBJECT_MAP | RBD_FEATURE_FAST_DIFF); | |
1513 | } | |
1514 | ||
7c673cae FG |
1515 | if (features == 0) { |
1516 | lderr(cct) << "update requires at least one feature" << dendl; | |
1517 | return -EINVAL; | |
1518 | } | |
1519 | { | |
9f95a23c | 1520 | std::shared_lock image_locker{m_image_ctx.image_lock}; |
7c673cae FG |
1521 | if (enabled && (features & m_image_ctx.features) != 0) { |
1522 | lderr(cct) << "one or more requested features are already enabled" | |
1523 | << dendl; | |
1524 | return -EINVAL; | |
1525 | } | |
1526 | if (!enabled && (features & ~m_image_ctx.features) != 0) { | |
1527 | lderr(cct) << "one or more requested features are already disabled" | |
1528 | << dendl; | |
1529 | return -EINVAL; | |
1530 | } | |
1531 | } | |
1532 | ||
1533 | // if disabling journaling, avoid attempting to open the journal | |
1534 | // when acquiring the exclusive lock in case the journal is corrupt | |
1535 | bool disabling_journal = false; | |
1536 | if (!enabled && ((features & RBD_FEATURE_JOURNALING) != 0)) { | |
9f95a23c | 1537 | std::unique_lock image_locker{m_image_ctx.image_lock}; |
7c673cae FG |
1538 | m_image_ctx.set_journal_policy(new journal::DisabledPolicy()); |
1539 | disabling_journal = true; | |
1540 | } | |
1541 | BOOST_SCOPE_EXIT_ALL( (this)(disabling_journal) ) { | |
1542 | if (disabling_journal) { | |
9f95a23c | 1543 | std::unique_lock image_locker{m_image_ctx.image_lock}; |
7c673cae FG |
1544 | m_image_ctx.set_journal_policy( |
1545 | new journal::StandardPolicy<I>(&m_image_ctx)); | |
1546 | } | |
1547 | }; | |
1548 | ||
91327a77 AA |
1549 | // The journal options are not passed to the lock owner in the |
1550 | // update features request. Therefore, if journaling is being | |
1551 | // enabled, the lock should be locally acquired instead of | |
1552 | // attempting to send the request to the peer. | |
1553 | if (enabled && (features & RBD_FEATURE_JOURNALING) != 0) { | |
1554 | C_SaferCond cond_ctx; | |
1555 | { | |
9f95a23c | 1556 | std::shared_lock owner_lock{m_image_ctx.owner_lock}; |
92f5a8d4 TL |
1557 | r = prepare_image_update(exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
1558 | true); | |
91327a77 AA |
1559 | if (r < 0) { |
1560 | return r; | |
1561 | } | |
1562 | ||
1563 | execute_update_features(features, enabled, &cond_ctx, 0); | |
1564 | } | |
1565 | ||
1566 | r = cond_ctx.wait(); | |
1567 | } else { | |
f67539c2 TL |
1568 | uint64_t request_id = util::reserve_async_request_id(); |
1569 | r = invoke_async_request(OPERATION_UPDATE_FEATURES, | |
92f5a8d4 TL |
1570 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
1571 | false, | |
91327a77 AA |
1572 | boost::bind(&Operations<I>::execute_update_features, |
1573 | this, features, enabled, _1, 0), | |
1574 | boost::bind(&ImageWatcher<I>::notify_update_features, | |
f67539c2 TL |
1575 | m_image_ctx.image_watcher, request_id, |
1576 | features, enabled, _1)); | |
91327a77 | 1577 | } |
7c673cae FG |
1578 | ldout(cct, 2) << "update_features finished" << dendl; |
1579 | return r; | |
1580 | } | |
1581 | ||
1582 | template <typename I> | |
1583 | void Operations<I>::execute_update_features(uint64_t features, bool enabled, | |
1584 | Context *on_finish, | |
1585 | uint64_t journal_op_tid) { | |
9f95a23c | 1586 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
11fdf7f2 TL |
1587 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
1588 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
7c673cae FG |
1589 | |
1590 | CephContext *cct = m_image_ctx.cct; | |
1591 | ldout(cct, 5) << this << " " << __func__ << ": features=" << features | |
1592 | << ", enabled=" << enabled << dendl; | |
1593 | ||
11fdf7f2 TL |
1594 | if (m_image_ctx.operations_disabled) { |
1595 | on_finish->complete(-EROFS); | |
1596 | return; | |
1597 | } | |
1598 | ||
7c673cae FG |
1599 | if (enabled) { |
1600 | operation::EnableFeaturesRequest<I> *req = | |
1601 | new operation::EnableFeaturesRequest<I>( | |
1602 | m_image_ctx, on_finish, journal_op_tid, features); | |
1603 | req->send(); | |
1604 | } else { | |
1605 | operation::DisableFeaturesRequest<I> *req = | |
1606 | new operation::DisableFeaturesRequest<I>( | |
1607 | m_image_ctx, on_finish, journal_op_tid, features, false); | |
1608 | req->send(); | |
1609 | } | |
1610 | } | |
1611 | ||
1612 | template <typename I> | |
1613 | int Operations<I>::metadata_set(const std::string &key, | |
1614 | const std::string &value) { | |
1615 | CephContext *cct = m_image_ctx.cct; | |
1616 | ldout(cct, 5) << this << " " << __func__ << ": key=" << key << ", value=" | |
1617 | << value << dendl; | |
1618 | ||
b32b8144 FG |
1619 | std::string config_key; |
1620 | bool config_override = util::is_metadata_config_override(key, &config_key); | |
1621 | if (config_override) { | |
7c673cae | 1622 | // validate config setting |
11fdf7f2 TL |
1623 | if (!librbd::api::Config<I>::is_option_name(&m_image_ctx, config_key)) { |
1624 | lderr(cct) << "validation for " << key | |
1625 | << " failed: not allowed image level override" << dendl; | |
1626 | return -EINVAL; | |
1627 | } | |
1628 | int r = ConfigProxy{false}.set_val(config_key.c_str(), value); | |
7c673cae FG |
1629 | if (r < 0) { |
1630 | return r; | |
1631 | } | |
1632 | } | |
1633 | ||
1634 | int r = m_image_ctx.state->refresh_if_required(); | |
1635 | if (r < 0) { | |
1636 | return r; | |
1637 | } | |
1638 | ||
1639 | if (m_image_ctx.read_only) { | |
1640 | return -EROFS; | |
1641 | } | |
1642 | ||
f67539c2 TL |
1643 | uint64_t request_id = util::reserve_async_request_id(); |
1644 | r = invoke_async_request(OPERATION_METADATA_UPDATE, | |
1645 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, | |
1646 | false, | |
1647 | boost::bind(&Operations<I>::execute_metadata_set, | |
1648 | this, key, value, _1), | |
1649 | boost::bind(&ImageWatcher<I>::notify_metadata_set, | |
1650 | m_image_ctx.image_watcher, request_id, | |
1651 | key, value, _1)); | |
b32b8144 | 1652 | |
b32b8144 FG |
1653 | if (config_override && r >= 0) { |
1654 | // apply new config key immediately | |
1655 | r = m_image_ctx.state->refresh_if_required(); | |
7c673cae FG |
1656 | } |
1657 | ||
f67539c2 | 1658 | ldout(cct, 20) << "metadata_set finished" << dendl; |
7c673cae FG |
1659 | return r; |
1660 | } | |
1661 | ||
1662 | template <typename I> | |
1663 | void Operations<I>::execute_metadata_set(const std::string &key, | |
1664 | const std::string &value, | |
1665 | Context *on_finish) { | |
9f95a23c | 1666 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
7c673cae FG |
1667 | |
1668 | CephContext *cct = m_image_ctx.cct; | |
1669 | ldout(cct, 5) << this << " " << __func__ << ": key=" << key << ", value=" | |
1670 | << value << dendl; | |
1671 | ||
11fdf7f2 TL |
1672 | if (m_image_ctx.operations_disabled) { |
1673 | on_finish->complete(-EROFS); | |
1674 | return; | |
1675 | } | |
1676 | ||
7c673cae | 1677 | operation::MetadataSetRequest<I> *request = |
b32b8144 FG |
1678 | new operation::MetadataSetRequest<I>(m_image_ctx, |
1679 | new C_NotifyUpdate<I>(m_image_ctx, on_finish), | |
1680 | key, value); | |
7c673cae FG |
1681 | request->send(); |
1682 | } | |
1683 | ||
1684 | template <typename I> | |
1685 | int Operations<I>::metadata_remove(const std::string &key) { | |
1686 | CephContext *cct = m_image_ctx.cct; | |
1687 | ldout(cct, 5) << this << " " << __func__ << ": key=" << key << dendl; | |
1688 | ||
7c673cae FG |
1689 | int r = m_image_ctx.state->refresh_if_required(); |
1690 | if (r < 0) { | |
1691 | return r; | |
1692 | } | |
1693 | ||
1694 | if (m_image_ctx.read_only) { | |
1695 | return -EROFS; | |
1696 | } | |
1697 | ||
d2e6a577 FG |
1698 | std::string value; |
1699 | r = cls_client::metadata_get(&m_image_ctx.md_ctx, m_image_ctx.header_oid, key, &value); | |
1700 | if(r < 0) | |
1701 | return r; | |
1702 | ||
f67539c2 TL |
1703 | uint64_t request_id = util::reserve_async_request_id(); |
1704 | r = invoke_async_request(OPERATION_METADATA_UPDATE, | |
1705 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, | |
1706 | false, | |
1707 | boost::bind(&Operations<I>::execute_metadata_remove, | |
1708 | this, key, _1), | |
1709 | boost::bind(&ImageWatcher<I>::notify_metadata_remove, | |
1710 | m_image_ctx.image_watcher, request_id, | |
1711 | key, _1)); | |
1712 | if (r == -ENOENT) { | |
1713 | r = 0; | |
b32b8144 FG |
1714 | } |
1715 | ||
b32b8144 FG |
1716 | std::string config_key; |
1717 | if (util::is_metadata_config_override(key, &config_key) && r >= 0) { | |
1718 | // apply new config key immediately | |
1719 | r = m_image_ctx.state->refresh_if_required(); | |
7c673cae FG |
1720 | } |
1721 | ||
f67539c2 | 1722 | ldout(cct, 20) << "metadata_remove finished" << dendl; |
7c673cae FG |
1723 | return r; |
1724 | } | |
1725 | ||
1726 | template <typename I> | |
1727 | void Operations<I>::execute_metadata_remove(const std::string &key, | |
1728 | Context *on_finish) { | |
9f95a23c | 1729 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
7c673cae FG |
1730 | |
1731 | CephContext *cct = m_image_ctx.cct; | |
1732 | ldout(cct, 5) << this << " " << __func__ << ": key=" << key << dendl; | |
1733 | ||
11fdf7f2 TL |
1734 | if (m_image_ctx.operations_disabled) { |
1735 | on_finish->complete(-EROFS); | |
1736 | return; | |
1737 | } | |
1738 | ||
7c673cae | 1739 | operation::MetadataRemoveRequest<I> *request = |
b32b8144 FG |
1740 | new operation::MetadataRemoveRequest<I>( |
1741 | m_image_ctx, | |
1742 | new C_NotifyUpdate<I>(m_image_ctx, on_finish), key); | |
7c673cae FG |
1743 | request->send(); |
1744 | } | |
1745 | ||
11fdf7f2 TL |
1746 | template <typename I> |
1747 | int Operations<I>::migrate(ProgressContext &prog_ctx) { | |
1748 | CephContext *cct = m_image_ctx.cct; | |
1749 | ldout(cct, 20) << "migrate" << dendl; | |
1750 | ||
1751 | int r = m_image_ctx.state->refresh_if_required(); | |
1752 | if (r < 0) { | |
1753 | return r; | |
1754 | } | |
1755 | ||
1756 | if (m_image_ctx.read_only) { | |
1757 | return -EROFS; | |
1758 | } | |
1759 | ||
1760 | { | |
9f95a23c | 1761 | std::shared_lock image_locker{m_image_ctx.image_lock}; |
11fdf7f2 TL |
1762 | if (m_image_ctx.migration_info.empty()) { |
1763 | lderr(cct) << "image has no migrating parent" << dendl; | |
1764 | return -EINVAL; | |
1765 | } | |
1766 | } | |
1767 | ||
f67539c2 TL |
1768 | uint64_t request_id = util::reserve_async_request_id(); |
1769 | r = invoke_async_request(OPERATION_MIGRATE, | |
92f5a8d4 TL |
1770 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
1771 | false, | |
11fdf7f2 TL |
1772 | boost::bind(&Operations<I>::execute_migrate, this, |
1773 | boost::ref(prog_ctx), _1), | |
1774 | boost::bind(&ImageWatcher<I>::notify_migrate, | |
1775 | m_image_ctx.image_watcher, request_id, | |
1776 | boost::ref(prog_ctx), _1)); | |
1777 | ||
1778 | if (r < 0 && r != -EINVAL) { | |
1779 | return r; | |
1780 | } | |
1781 | ldout(cct, 20) << "migrate finished" << dendl; | |
1782 | return 0; | |
1783 | } | |
1784 | ||
1785 | template <typename I> | |
1786 | void Operations<I>::execute_migrate(ProgressContext &prog_ctx, | |
1787 | Context *on_finish) { | |
9f95a23c | 1788 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
11fdf7f2 TL |
1789 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
1790 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
1791 | ||
1792 | CephContext *cct = m_image_ctx.cct; | |
1793 | ldout(cct, 20) << "migrate" << dendl; | |
1794 | ||
1795 | if (m_image_ctx.read_only || m_image_ctx.operations_disabled) { | |
1796 | on_finish->complete(-EROFS); | |
1797 | return; | |
1798 | } | |
1799 | ||
9f95a23c | 1800 | m_image_ctx.image_lock.lock_shared(); |
11fdf7f2 TL |
1801 | |
1802 | if (m_image_ctx.migration_info.empty()) { | |
1803 | lderr(cct) << "image has no migrating parent" << dendl; | |
9f95a23c | 1804 | m_image_ctx.image_lock.unlock_shared(); |
11fdf7f2 TL |
1805 | on_finish->complete(-EINVAL); |
1806 | return; | |
1807 | } | |
1808 | if (m_image_ctx.snap_id != CEPH_NOSNAP) { | |
1809 | lderr(cct) << "snapshots cannot be migrated" << dendl; | |
9f95a23c | 1810 | m_image_ctx.image_lock.unlock_shared(); |
11fdf7f2 TL |
1811 | on_finish->complete(-EROFS); |
1812 | return; | |
1813 | } | |
1814 | ||
9f95a23c | 1815 | m_image_ctx.image_lock.unlock_shared(); |
11fdf7f2 TL |
1816 | |
1817 | operation::MigrateRequest<I> *req = new operation::MigrateRequest<I>( | |
1818 | m_image_ctx, new C_NotifyUpdate<I>(m_image_ctx, on_finish), prog_ctx); | |
1819 | req->send(); | |
1820 | } | |
1821 | ||
1822 | template <typename I> | |
1823 | int Operations<I>::sparsify(size_t sparse_size, ProgressContext &prog_ctx) { | |
1824 | CephContext *cct = m_image_ctx.cct; | |
1825 | ldout(cct, 20) << "sparsify" << dendl; | |
92f5a8d4 | 1826 | |
11fdf7f2 TL |
1827 | if (sparse_size < 4096 || sparse_size > m_image_ctx.get_object_size() || |
1828 | (sparse_size & (sparse_size - 1)) != 0) { | |
1829 | lderr(cct) << "sparse size should be power of two not less than 4096" | |
1830 | << " and not larger image object size" << dendl; | |
1831 | return -EINVAL; | |
1832 | } | |
1833 | ||
f67539c2 TL |
1834 | uint64_t request_id = util::reserve_async_request_id(); |
1835 | int r = invoke_async_request(OPERATION_SPARSIFY, | |
92f5a8d4 TL |
1836 | exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, |
1837 | false, | |
11fdf7f2 TL |
1838 | boost::bind(&Operations<I>::execute_sparsify, |
1839 | this, sparse_size, | |
1840 | boost::ref(prog_ctx), _1), | |
1841 | boost::bind(&ImageWatcher<I>::notify_sparsify, | |
1842 | m_image_ctx.image_watcher, | |
1843 | request_id, sparse_size, | |
1844 | boost::ref(prog_ctx), _1)); | |
1845 | if (r < 0 && r != -EINVAL) { | |
1846 | return r; | |
1847 | } | |
1848 | ldout(cct, 20) << "resparsify finished" << dendl; | |
1849 | return 0; | |
1850 | } | |
1851 | ||
1852 | template <typename I> | |
1853 | void Operations<I>::execute_sparsify(size_t sparse_size, | |
1854 | ProgressContext &prog_ctx, | |
1855 | Context *on_finish) { | |
9f95a23c | 1856 | ceph_assert(ceph_mutex_is_locked(m_image_ctx.owner_lock)); |
11fdf7f2 TL |
1857 | ceph_assert(m_image_ctx.exclusive_lock == nullptr || |
1858 | m_image_ctx.exclusive_lock->is_lock_owner()); | |
1859 | ||
1860 | CephContext *cct = m_image_ctx.cct; | |
1861 | ldout(cct, 20) << "sparsify" << dendl; | |
1862 | ||
1863 | if (m_image_ctx.operations_disabled) { | |
1864 | on_finish->complete(-EROFS); | |
1865 | return; | |
1866 | } | |
1867 | ||
1868 | auto req = new operation::SparsifyRequest<I>( | |
1869 | m_image_ctx, sparse_size, new C_NotifyUpdate<I>(m_image_ctx, on_finish), | |
1870 | prog_ctx); | |
1871 | req->send(); | |
1872 | } | |
1873 | ||
7c673cae | 1874 | template <typename I> |
92f5a8d4 TL |
1875 | int Operations<I>::prepare_image_update( |
1876 | exclusive_lock::OperationRequestType request_type, bool request_lock) { | |
9f95a23c | 1877 | ceph_assert(ceph_mutex_is_rlocked(m_image_ctx.owner_lock)); |
b32b8144 | 1878 | if (m_image_ctx.image_watcher == nullptr) { |
7c673cae FG |
1879 | return -EROFS; |
1880 | } | |
1881 | ||
1882 | // need to upgrade to a write lock | |
7c673cae | 1883 | C_SaferCond ctx; |
9f95a23c | 1884 | m_image_ctx.owner_lock.unlock_shared(); |
b32b8144 | 1885 | bool attempting_lock = false; |
7c673cae | 1886 | { |
9f95a23c | 1887 | std::unique_lock owner_locker{m_image_ctx.owner_lock}; |
7c673cae FG |
1888 | if (m_image_ctx.exclusive_lock != nullptr && |
1889 | (!m_image_ctx.exclusive_lock->is_lock_owner() || | |
92f5a8d4 | 1890 | !m_image_ctx.exclusive_lock->accept_request(request_type, nullptr))) { |
b32b8144 FG |
1891 | |
1892 | attempting_lock = true; | |
1893 | m_image_ctx.exclusive_lock->block_requests(0); | |
1894 | ||
1895 | if (request_lock) { | |
1896 | m_image_ctx.exclusive_lock->acquire_lock(&ctx); | |
1897 | } else { | |
1898 | m_image_ctx.exclusive_lock->try_acquire_lock(&ctx); | |
1899 | } | |
7c673cae FG |
1900 | } |
1901 | } | |
1902 | ||
31f18b77 | 1903 | int r = 0; |
b32b8144 | 1904 | if (attempting_lock) { |
7c673cae FG |
1905 | r = ctx.wait(); |
1906 | } | |
b32b8144 | 1907 | |
9f95a23c | 1908 | m_image_ctx.owner_lock.lock_shared(); |
b32b8144 FG |
1909 | if (attempting_lock && m_image_ctx.exclusive_lock != nullptr) { |
1910 | m_image_ctx.exclusive_lock->unblock_requests(); | |
1911 | } | |
7c673cae | 1912 | |
91327a77 AA |
1913 | if (r == -EAGAIN || r == -EBUSY) { |
1914 | r = 0; | |
1915 | } | |
b32b8144 FG |
1916 | if (r < 0) { |
1917 | return r; | |
1918 | } else if (m_image_ctx.exclusive_lock != nullptr && | |
1919 | !m_image_ctx.exclusive_lock->is_lock_owner()) { | |
91327a77 | 1920 | return m_image_ctx.exclusive_lock->get_unlocked_op_error(); |
b32b8144 FG |
1921 | } |
1922 | ||
1923 | return 0; | |
7c673cae FG |
1924 | } |
1925 | ||
1926 | template <typename I> | |
92f5a8d4 | 1927 | int Operations<I>::invoke_async_request( |
f67539c2 | 1928 | Operation op, exclusive_lock::OperationRequestType request_type, |
92f5a8d4 TL |
1929 | bool permit_snapshot, const boost::function<void(Context*)>& local_request, |
1930 | const boost::function<void(Context*)>& remote_request) { | |
7c673cae | 1931 | C_SaferCond ctx; |
f67539c2 | 1932 | C_InvokeAsyncRequest<I> *req = new C_InvokeAsyncRequest<I>(m_image_ctx, op, |
7c673cae FG |
1933 | request_type, |
1934 | permit_snapshot, | |
1935 | local_request, | |
1936 | remote_request, | |
1937 | {}, &ctx); | |
1938 | req->send(); | |
1939 | return ctx.wait(); | |
1940 | } | |
1941 | ||
1942 | } // namespace librbd | |
1943 | ||
1944 | template class librbd::Operations<librbd::ImageCtx>; |