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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 | ||
11fdf7f2 | 4 | #include "include/ceph_assert.h" |
b32b8144 | 5 | |
7c673cae FG |
6 | #include "librbd/image/RefreshRequest.h" |
7 | #include "common/dout.h" | |
8 | #include "common/errno.h" | |
9 | #include "cls/lock/cls_lock_client.h" | |
10 | #include "cls/rbd/cls_rbd_client.h" | |
11 | #include "librbd/ExclusiveLock.h" | |
12 | #include "librbd/ImageCtx.h" | |
11fdf7f2 | 13 | #include "librbd/ImageWatcher.h" |
7c673cae FG |
14 | #include "librbd/Journal.h" |
15 | #include "librbd/ObjectMap.h" | |
16 | #include "librbd/Utils.h" | |
11fdf7f2 | 17 | #include "librbd/deep_copy/Utils.h" |
9f95a23c | 18 | #include "librbd/image/GetMetadataRequest.h" |
7c673cae | 19 | #include "librbd/image/RefreshParentRequest.h" |
11fdf7f2 TL |
20 | #include "librbd/io/AioCompletion.h" |
21 | #include "librbd/io/ImageDispatchSpec.h" | |
7c673cae FG |
22 | #include "librbd/io/ImageRequestWQ.h" |
23 | #include "librbd/journal/Policy.h" | |
24 | ||
25 | #define dout_subsys ceph_subsys_rbd | |
26 | #undef dout_prefix | |
27 | #define dout_prefix *_dout << "librbd::image::RefreshRequest: " | |
28 | ||
29 | namespace librbd { | |
30 | namespace image { | |
31 | ||
32 | using util::create_rados_callback; | |
33 | using util::create_async_context_callback; | |
34 | using util::create_context_callback; | |
35 | ||
36 | template <typename I> | |
37 | RefreshRequest<I>::RefreshRequest(I &image_ctx, bool acquiring_lock, | |
38 | bool skip_open_parent, Context *on_finish) | |
39 | : m_image_ctx(image_ctx), m_acquiring_lock(acquiring_lock), | |
40 | m_skip_open_parent_image(skip_open_parent), | |
41 | m_on_finish(create_async_context_callback(m_image_ctx, on_finish)), | |
42 | m_error_result(0), m_flush_aio(false), m_exclusive_lock(nullptr), | |
43 | m_object_map(nullptr), m_journal(nullptr), m_refresh_parent(nullptr) { | |
11fdf7f2 TL |
44 | m_pool_metadata_io_ctx.dup(image_ctx.md_ctx); |
45 | m_pool_metadata_io_ctx.set_namespace(""); | |
7c673cae FG |
46 | } |
47 | ||
48 | template <typename I> | |
49 | RefreshRequest<I>::~RefreshRequest() { | |
50 | // these require state machine to close | |
11fdf7f2 TL |
51 | ceph_assert(m_exclusive_lock == nullptr); |
52 | ceph_assert(m_object_map == nullptr); | |
53 | ceph_assert(m_journal == nullptr); | |
54 | ceph_assert(m_refresh_parent == nullptr); | |
55 | ceph_assert(!m_blocked_writes); | |
7c673cae FG |
56 | } |
57 | ||
58 | template <typename I> | |
59 | void RefreshRequest<I>::send() { | |
60 | if (m_image_ctx.old_format) { | |
61 | send_v1_read_header(); | |
62 | } else { | |
63 | send_v2_get_mutable_metadata(); | |
64 | } | |
65 | } | |
66 | ||
11fdf7f2 TL |
67 | template <typename I> |
68 | void RefreshRequest<I>::send_get_migration_header() { | |
69 | if (m_image_ctx.ignore_migrating) { | |
70 | if (m_image_ctx.old_format) { | |
71 | send_v1_get_snapshots(); | |
72 | } else { | |
73 | send_v2_get_metadata(); | |
74 | } | |
75 | return; | |
76 | } | |
77 | ||
78 | CephContext *cct = m_image_ctx.cct; | |
79 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
80 | ||
81 | librados::ObjectReadOperation op; | |
82 | cls_client::migration_get_start(&op); | |
83 | ||
84 | using klass = RefreshRequest<I>; | |
85 | librados::AioCompletion *comp = | |
86 | create_rados_callback<klass, &klass::handle_get_migration_header>(this); | |
87 | m_out_bl.clear(); | |
88 | m_image_ctx.md_ctx.aio_operate(m_image_ctx.header_oid, comp, &op, | |
89 | &m_out_bl); | |
90 | comp->release(); | |
91 | } | |
92 | ||
93 | template <typename I> | |
94 | Context *RefreshRequest<I>::handle_get_migration_header(int *result) { | |
95 | CephContext *cct = m_image_ctx.cct; | |
96 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
97 | ||
98 | if (*result == 0) { | |
99 | auto it = m_out_bl.cbegin(); | |
100 | *result = cls_client::migration_get_finish(&it, &m_migration_spec); | |
101 | } else if (*result == -ENOENT) { | |
102 | ldout(cct, 5) << this << " " << __func__ << ": no migration header found" | |
103 | << ", retrying" << dendl; | |
104 | send(); | |
105 | return nullptr; | |
106 | } | |
107 | ||
108 | if (*result < 0) { | |
109 | lderr(cct) << "failed to retrieve migration header: " | |
110 | << cpp_strerror(*result) << dendl; | |
111 | return m_on_finish; | |
112 | } | |
113 | ||
114 | switch(m_migration_spec.header_type) { | |
115 | case cls::rbd::MIGRATION_HEADER_TYPE_SRC: | |
9f95a23c | 116 | if (!m_read_only) { |
11fdf7f2 TL |
117 | lderr(cct) << "image being migrated" << dendl; |
118 | *result = -EROFS; | |
119 | return m_on_finish; | |
120 | } | |
121 | ldout(cct, 1) << this << " " << __func__ << ": migrating to: " | |
122 | << m_migration_spec << dendl; | |
123 | break; | |
124 | case cls::rbd::MIGRATION_HEADER_TYPE_DST: | |
125 | ldout(cct, 1) << this << " " << __func__ << ": migrating from: " | |
126 | << m_migration_spec << dendl; | |
127 | if (m_migration_spec.state != cls::rbd::MIGRATION_STATE_PREPARED && | |
128 | m_migration_spec.state != cls::rbd::MIGRATION_STATE_EXECUTING && | |
129 | m_migration_spec.state != cls::rbd::MIGRATION_STATE_EXECUTED) { | |
130 | ldout(cct, 5) << this << " " << __func__ << ": current migration state: " | |
131 | << m_migration_spec.state << ", retrying" << dendl; | |
132 | send(); | |
133 | return nullptr; | |
134 | } | |
135 | break; | |
136 | default: | |
137 | ldout(cct, 1) << this << " " << __func__ << ": migration type " | |
138 | << m_migration_spec.header_type << dendl; | |
139 | *result = -EBADMSG; | |
140 | return m_on_finish; | |
141 | } | |
142 | ||
143 | if (m_image_ctx.old_format) { | |
144 | send_v1_get_snapshots(); | |
145 | } else { | |
146 | send_v2_get_metadata(); | |
147 | } | |
148 | return nullptr; | |
149 | } | |
150 | ||
7c673cae FG |
151 | template <typename I> |
152 | void RefreshRequest<I>::send_v1_read_header() { | |
153 | CephContext *cct = m_image_ctx.cct; | |
154 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
155 | ||
156 | librados::ObjectReadOperation op; | |
157 | op.read(0, 0, nullptr, nullptr); | |
158 | ||
159 | using klass = RefreshRequest<I>; | |
160 | librados::AioCompletion *comp = create_rados_callback< | |
161 | klass, &klass::handle_v1_read_header>(this); | |
162 | m_out_bl.clear(); | |
163 | int r = m_image_ctx.md_ctx.aio_operate(m_image_ctx.header_oid, comp, &op, | |
164 | &m_out_bl); | |
11fdf7f2 | 165 | ceph_assert(r == 0); |
7c673cae FG |
166 | comp->release(); |
167 | } | |
168 | ||
169 | template <typename I> | |
170 | Context *RefreshRequest<I>::handle_v1_read_header(int *result) { | |
171 | CephContext *cct = m_image_ctx.cct; | |
172 | ldout(cct, 10) << this << " " << __func__ << ": " << "r=" << *result << dendl; | |
173 | ||
174 | rbd_obj_header_ondisk v1_header; | |
11fdf7f2 | 175 | bool migrating = false; |
7c673cae FG |
176 | if (*result < 0) { |
177 | return m_on_finish; | |
178 | } else if (m_out_bl.length() < sizeof(v1_header)) { | |
179 | lderr(cct) << "v1 header too small" << dendl; | |
180 | *result = -EIO; | |
181 | return m_on_finish; | |
182 | } else if (memcmp(RBD_HEADER_TEXT, m_out_bl.c_str(), | |
183 | sizeof(RBD_HEADER_TEXT)) != 0) { | |
11fdf7f2 TL |
184 | if (memcmp(RBD_MIGRATE_HEADER_TEXT, m_out_bl.c_str(), |
185 | sizeof(RBD_MIGRATE_HEADER_TEXT)) == 0) { | |
186 | ldout(cct, 1) << this << " " << __func__ << ": migration v1 header detected" | |
187 | << dendl; | |
188 | migrating = true; | |
189 | } else { | |
190 | lderr(cct) << "unrecognized v1 header" << dendl; | |
191 | *result = -ENXIO; | |
192 | return m_on_finish; | |
193 | } | |
7c673cae FG |
194 | } |
195 | ||
9f95a23c TL |
196 | { |
197 | std::shared_lock image_locker{m_image_ctx.image_lock}; | |
198 | m_read_only = m_image_ctx.read_only; | |
199 | m_read_only_flags = m_image_ctx.read_only_flags; | |
200 | } | |
201 | ||
7c673cae FG |
202 | memcpy(&v1_header, m_out_bl.c_str(), sizeof(v1_header)); |
203 | m_order = v1_header.options.order; | |
204 | m_size = v1_header.image_size; | |
205 | m_object_prefix = v1_header.block_name; | |
11fdf7f2 TL |
206 | if (migrating) { |
207 | send_get_migration_header(); | |
208 | } else { | |
209 | send_v1_get_snapshots(); | |
210 | } | |
7c673cae FG |
211 | return nullptr; |
212 | } | |
213 | ||
214 | template <typename I> | |
215 | void RefreshRequest<I>::send_v1_get_snapshots() { | |
216 | CephContext *cct = m_image_ctx.cct; | |
217 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
218 | ||
219 | librados::ObjectReadOperation op; | |
220 | cls_client::old_snapshot_list_start(&op); | |
221 | ||
222 | using klass = RefreshRequest<I>; | |
223 | librados::AioCompletion *comp = create_rados_callback< | |
224 | klass, &klass::handle_v1_get_snapshots>(this); | |
225 | m_out_bl.clear(); | |
226 | int r = m_image_ctx.md_ctx.aio_operate(m_image_ctx.header_oid, comp, &op, | |
227 | &m_out_bl); | |
11fdf7f2 | 228 | ceph_assert(r == 0); |
7c673cae FG |
229 | comp->release(); |
230 | } | |
231 | ||
232 | template <typename I> | |
233 | Context *RefreshRequest<I>::handle_v1_get_snapshots(int *result) { | |
234 | CephContext *cct = m_image_ctx.cct; | |
235 | ldout(cct, 10) << this << " " << __func__ << ": " << "r=" << *result << dendl; | |
236 | ||
11fdf7f2 TL |
237 | std::vector<std::string> snap_names; |
238 | std::vector<uint64_t> snap_sizes; | |
7c673cae | 239 | if (*result == 0) { |
11fdf7f2 TL |
240 | auto it = m_out_bl.cbegin(); |
241 | *result = cls_client::old_snapshot_list_finish(&it, &snap_names, | |
242 | &snap_sizes, &m_snapc); | |
7c673cae FG |
243 | } |
244 | ||
245 | if (*result < 0) { | |
246 | lderr(cct) << "failed to retrieve v1 snapshots: " << cpp_strerror(*result) | |
247 | << dendl; | |
248 | return m_on_finish; | |
249 | } | |
250 | ||
251 | if (!m_snapc.is_valid()) { | |
252 | lderr(cct) << "v1 image snap context is invalid" << dendl; | |
253 | *result = -EIO; | |
254 | return m_on_finish; | |
255 | } | |
256 | ||
11fdf7f2 TL |
257 | m_snap_infos.clear(); |
258 | for (size_t i = 0; i < m_snapc.snaps.size(); ++i) { | |
259 | m_snap_infos.push_back({m_snapc.snaps[i], | |
260 | {cls::rbd::UserSnapshotNamespace{}}, | |
261 | snap_names[i], snap_sizes[i], {}, 0}); | |
262 | } | |
7c673cae FG |
263 | |
264 | send_v1_get_locks(); | |
265 | return nullptr; | |
266 | } | |
267 | ||
268 | template <typename I> | |
269 | void RefreshRequest<I>::send_v1_get_locks() { | |
270 | CephContext *cct = m_image_ctx.cct; | |
271 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
272 | ||
273 | librados::ObjectReadOperation op; | |
274 | rados::cls::lock::get_lock_info_start(&op, RBD_LOCK_NAME); | |
275 | ||
276 | using klass = RefreshRequest<I>; | |
277 | librados::AioCompletion *comp = create_rados_callback< | |
278 | klass, &klass::handle_v1_get_locks>(this); | |
279 | m_out_bl.clear(); | |
280 | int r = m_image_ctx.md_ctx.aio_operate(m_image_ctx.header_oid, comp, &op, | |
281 | &m_out_bl); | |
11fdf7f2 | 282 | ceph_assert(r == 0); |
7c673cae FG |
283 | comp->release(); |
284 | } | |
285 | ||
286 | template <typename I> | |
287 | Context *RefreshRequest<I>::handle_v1_get_locks(int *result) { | |
288 | CephContext *cct = m_image_ctx.cct; | |
289 | ldout(cct, 10) << this << " " << __func__ << ": " | |
290 | << "r=" << *result << dendl; | |
291 | ||
11fdf7f2 TL |
292 | if (*result == 0) { |
293 | auto it = m_out_bl.cbegin(); | |
7c673cae FG |
294 | ClsLockType lock_type; |
295 | *result = rados::cls::lock::get_lock_info_finish(&it, &m_lockers, | |
296 | &lock_type, &m_lock_tag); | |
297 | if (*result == 0) { | |
298 | m_exclusive_locked = (lock_type == LOCK_EXCLUSIVE); | |
299 | } | |
300 | } | |
301 | if (*result < 0) { | |
302 | lderr(cct) << "failed to retrieve locks: " << cpp_strerror(*result) | |
303 | << dendl; | |
304 | return m_on_finish; | |
305 | } | |
306 | ||
307 | send_v1_apply(); | |
308 | return nullptr; | |
309 | } | |
310 | ||
311 | template <typename I> | |
312 | void RefreshRequest<I>::send_v1_apply() { | |
313 | CephContext *cct = m_image_ctx.cct; | |
314 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
315 | ||
316 | // ensure we are not in a rados callback when applying updates | |
317 | using klass = RefreshRequest<I>; | |
318 | Context *ctx = create_context_callback< | |
319 | klass, &klass::handle_v1_apply>(this); | |
320 | m_image_ctx.op_work_queue->queue(ctx, 0); | |
321 | } | |
322 | ||
323 | template <typename I> | |
324 | Context *RefreshRequest<I>::handle_v1_apply(int *result) { | |
325 | CephContext *cct = m_image_ctx.cct; | |
326 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
327 | ||
328 | apply(); | |
329 | return send_flush_aio(); | |
330 | } | |
331 | ||
332 | template <typename I> | |
333 | void RefreshRequest<I>::send_v2_get_mutable_metadata() { | |
334 | CephContext *cct = m_image_ctx.cct; | |
335 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
336 | ||
337 | uint64_t snap_id; | |
338 | { | |
9f95a23c | 339 | std::shared_lock image_locker{m_image_ctx.image_lock}; |
7c673cae | 340 | snap_id = m_image_ctx.snap_id; |
9f95a23c TL |
341 | m_read_only = m_image_ctx.read_only; |
342 | m_read_only_flags = m_image_ctx.read_only_flags; | |
7c673cae FG |
343 | } |
344 | ||
9f95a23c TL |
345 | // mask out the non-primary read-only flag since its state can change |
346 | bool read_only = ( | |
347 | ((m_read_only_flags & ~IMAGE_READ_ONLY_FLAG_NON_PRIMARY) != 0) || | |
348 | (snap_id != CEPH_NOSNAP)); | |
7c673cae | 349 | librados::ObjectReadOperation op; |
11fdf7f2 TL |
350 | cls_client::get_size_start(&op, CEPH_NOSNAP); |
351 | cls_client::get_features_start(&op, read_only); | |
352 | cls_client::get_flags_start(&op, CEPH_NOSNAP); | |
353 | cls_client::get_snapcontext_start(&op); | |
354 | rados::cls::lock::get_lock_info_start(&op, RBD_LOCK_NAME); | |
7c673cae FG |
355 | |
356 | using klass = RefreshRequest<I>; | |
357 | librados::AioCompletion *comp = create_rados_callback< | |
358 | klass, &klass::handle_v2_get_mutable_metadata>(this); | |
359 | m_out_bl.clear(); | |
360 | int r = m_image_ctx.md_ctx.aio_operate(m_image_ctx.header_oid, comp, &op, | |
361 | &m_out_bl); | |
11fdf7f2 | 362 | ceph_assert(r == 0); |
7c673cae FG |
363 | comp->release(); |
364 | } | |
365 | ||
366 | template <typename I> | |
367 | Context *RefreshRequest<I>::handle_v2_get_mutable_metadata(int *result) { | |
368 | CephContext *cct = m_image_ctx.cct; | |
369 | ldout(cct, 10) << this << " " << __func__ << ": " | |
370 | << "r=" << *result << dendl; | |
371 | ||
11fdf7f2 TL |
372 | auto it = m_out_bl.cbegin(); |
373 | if (*result >= 0) { | |
374 | uint8_t order; | |
375 | *result = cls_client::get_size_finish(&it, &m_size, &order); | |
376 | } | |
377 | ||
378 | if (*result >= 0) { | |
379 | *result = cls_client::get_features_finish(&it, &m_features, | |
380 | &m_incompatible_features); | |
381 | } | |
382 | ||
383 | if (*result >= 0) { | |
384 | *result = cls_client::get_flags_finish(&it, &m_flags); | |
385 | } | |
386 | ||
387 | if (*result >= 0) { | |
388 | *result = cls_client::get_snapcontext_finish(&it, &m_snapc); | |
389 | } | |
390 | ||
391 | if (*result >= 0) { | |
392 | ClsLockType lock_type = LOCK_NONE; | |
393 | *result = rados::cls::lock::get_lock_info_finish(&it, &m_lockers, | |
394 | &lock_type, &m_lock_tag); | |
395 | if (*result == 0) { | |
396 | m_exclusive_locked = (lock_type == LOCK_EXCLUSIVE); | |
397 | } | |
7c673cae | 398 | } |
11fdf7f2 | 399 | |
7c673cae FG |
400 | if (*result < 0) { |
401 | lderr(cct) << "failed to retrieve mutable metadata: " | |
402 | << cpp_strerror(*result) << dendl; | |
403 | return m_on_finish; | |
404 | } | |
405 | ||
406 | uint64_t unsupported = m_incompatible_features & ~RBD_FEATURES_ALL; | |
407 | if (unsupported != 0ULL) { | |
408 | lderr(cct) << "Image uses unsupported features: " << unsupported << dendl; | |
409 | *result = -ENOSYS; | |
410 | return m_on_finish; | |
411 | } | |
412 | ||
413 | if (!m_snapc.is_valid()) { | |
414 | lderr(cct) << "image snap context is invalid!" << dendl; | |
415 | *result = -EIO; | |
416 | return m_on_finish; | |
417 | } | |
418 | ||
419 | if (m_acquiring_lock && (m_features & RBD_FEATURE_EXCLUSIVE_LOCK) == 0) { | |
420 | ldout(cct, 5) << "ignoring dynamically disabled exclusive lock" << dendl; | |
421 | m_features |= RBD_FEATURE_EXCLUSIVE_LOCK; | |
422 | m_incomplete_update = true; | |
423 | } | |
424 | ||
9f95a23c TL |
425 | if (((m_incompatible_features & RBD_FEATURE_NON_PRIMARY) != 0U) && |
426 | ((m_read_only_flags & IMAGE_READ_ONLY_FLAG_NON_PRIMARY) == 0U) && | |
427 | ((m_image_ctx.read_only_mask & IMAGE_READ_ONLY_FLAG_NON_PRIMARY) != 0U)) { | |
428 | // implies we opened a non-primary image in R/W mode | |
429 | ldout(cct, 5) << "adding non-primary read-only image flag" << dendl; | |
430 | m_read_only_flags |= IMAGE_READ_ONLY_FLAG_NON_PRIMARY; | |
431 | } else if ((((m_incompatible_features & RBD_FEATURE_NON_PRIMARY) == 0U) || | |
432 | ((m_image_ctx.read_only_mask & | |
433 | IMAGE_READ_ONLY_FLAG_NON_PRIMARY) == 0U)) && | |
434 | ((m_read_only_flags & IMAGE_READ_ONLY_FLAG_NON_PRIMARY) != 0U)) { | |
435 | ldout(cct, 5) << "removing non-primary read-only image flag" << dendl; | |
436 | m_read_only_flags &= ~IMAGE_READ_ONLY_FLAG_NON_PRIMARY; | |
437 | } | |
438 | m_read_only = (m_read_only_flags != 0U); | |
439 | ||
11fdf7f2 TL |
440 | send_v2_get_parent(); |
441 | return nullptr; | |
442 | } | |
443 | ||
444 | template <typename I> | |
445 | void RefreshRequest<I>::send_v2_get_parent() { | |
446 | // NOTE: remove support when Mimic is EOLed | |
447 | CephContext *cct = m_image_ctx.cct; | |
448 | ldout(cct, 10) << this << " " << __func__ << ": legacy=" << m_legacy_parent | |
449 | << dendl; | |
450 | ||
451 | librados::ObjectReadOperation op; | |
452 | if (!m_legacy_parent) { | |
453 | cls_client::parent_get_start(&op); | |
454 | cls_client::parent_overlap_get_start(&op, CEPH_NOSNAP); | |
455 | } else { | |
456 | cls_client::get_parent_start(&op, CEPH_NOSNAP); | |
457 | } | |
458 | ||
459 | auto aio_comp = create_rados_callback< | |
460 | RefreshRequest<I>, &RefreshRequest<I>::handle_v2_get_parent>(this); | |
461 | m_out_bl.clear(); | |
462 | m_image_ctx.md_ctx.aio_operate(m_image_ctx.header_oid, aio_comp, &op, | |
463 | &m_out_bl); | |
464 | aio_comp->release(); | |
465 | } | |
466 | ||
467 | template <typename I> | |
468 | Context *RefreshRequest<I>::handle_v2_get_parent(int *result) { | |
469 | // NOTE: remove support when Mimic is EOLed | |
470 | CephContext *cct = m_image_ctx.cct; | |
471 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
472 | ||
473 | auto it = m_out_bl.cbegin(); | |
474 | if (!m_legacy_parent) { | |
475 | if (*result == 0) { | |
476 | *result = cls_client::parent_get_finish(&it, &m_parent_md.spec); | |
477 | } | |
478 | ||
479 | std::optional<uint64_t> parent_overlap; | |
480 | if (*result == 0) { | |
481 | *result = cls_client::parent_overlap_get_finish(&it, &parent_overlap); | |
482 | } | |
483 | ||
484 | if (*result == 0 && parent_overlap) { | |
485 | m_parent_md.overlap = *parent_overlap; | |
486 | m_head_parent_overlap = true; | |
487 | } | |
488 | } else if (*result == 0) { | |
489 | *result = cls_client::get_parent_finish(&it, &m_parent_md.spec, | |
490 | &m_parent_md.overlap); | |
491 | m_head_parent_overlap = true; | |
492 | } | |
493 | ||
494 | if (*result == -EOPNOTSUPP && !m_legacy_parent) { | |
495 | ldout(cct, 10) << "retrying using legacy parent method" << dendl; | |
496 | m_legacy_parent = true; | |
497 | send_v2_get_parent(); | |
498 | return nullptr; | |
499 | } if (*result < 0) { | |
500 | lderr(cct) << "failed to retrieve parent: " << cpp_strerror(*result) | |
501 | << dendl; | |
502 | return m_on_finish; | |
503 | } | |
504 | ||
505 | if ((m_features & RBD_FEATURE_MIGRATING) != 0) { | |
506 | ldout(cct, 1) << "migrating feature set" << dendl; | |
507 | send_get_migration_header(); | |
508 | return nullptr; | |
509 | } | |
510 | ||
b32b8144 FG |
511 | send_v2_get_metadata(); |
512 | return nullptr; | |
513 | } | |
514 | ||
515 | template <typename I> | |
516 | void RefreshRequest<I>::send_v2_get_metadata() { | |
517 | CephContext *cct = m_image_ctx.cct; | |
9f95a23c | 518 | ldout(cct, 10) << this << " " << __func__ << dendl; |
b32b8144 | 519 | |
9f95a23c TL |
520 | auto ctx = create_context_callback< |
521 | RefreshRequest<I>, &RefreshRequest<I>::handle_v2_get_metadata>(this); | |
522 | auto req = GetMetadataRequest<I>::create( | |
523 | m_image_ctx.md_ctx, m_image_ctx.header_oid, true, | |
524 | ImageCtx::METADATA_CONF_PREFIX, ImageCtx::METADATA_CONF_PREFIX, 0U, | |
525 | &m_metadata, ctx); | |
526 | req->send(); | |
b32b8144 FG |
527 | } |
528 | ||
529 | template <typename I> | |
530 | Context *RefreshRequest<I>::handle_v2_get_metadata(int *result) { | |
531 | CephContext *cct = m_image_ctx.cct; | |
532 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
533 | ||
11fdf7f2 | 534 | if (*result < 0) { |
b32b8144 FG |
535 | lderr(cct) << "failed to retrieve metadata: " << cpp_strerror(*result) |
536 | << dendl; | |
537 | return m_on_finish; | |
538 | } | |
539 | ||
11fdf7f2 | 540 | send_v2_get_pool_metadata(); |
7c673cae FG |
541 | return nullptr; |
542 | } | |
543 | ||
544 | template <typename I> | |
11fdf7f2 | 545 | void RefreshRequest<I>::send_v2_get_pool_metadata() { |
7c673cae | 546 | CephContext *cct = m_image_ctx.cct; |
9f95a23c | 547 | ldout(cct, 10) << this << " " << __func__ << dendl; |
7c673cae | 548 | |
9f95a23c TL |
549 | auto ctx = create_context_callback< |
550 | RefreshRequest<I>, &RefreshRequest<I>::handle_v2_get_pool_metadata>(this); | |
551 | auto req = GetMetadataRequest<I>::create( | |
552 | m_pool_metadata_io_ctx, RBD_INFO, true, ImageCtx::METADATA_CONF_PREFIX, | |
553 | ImageCtx::METADATA_CONF_PREFIX, 0U, &m_metadata, ctx); | |
554 | req->send(); | |
7c673cae FG |
555 | } |
556 | ||
557 | template <typename I> | |
11fdf7f2 | 558 | Context *RefreshRequest<I>::handle_v2_get_pool_metadata(int *result) { |
7c673cae | 559 | CephContext *cct = m_image_ctx.cct; |
11fdf7f2 | 560 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; |
7c673cae | 561 | |
9f95a23c | 562 | if (*result < 0) { |
11fdf7f2 | 563 | lderr(cct) << "failed to retrieve pool metadata: " << cpp_strerror(*result) |
7c673cae FG |
564 | << dendl; |
565 | return m_on_finish; | |
566 | } | |
567 | ||
11fdf7f2 TL |
568 | bool thread_safe = m_image_ctx.image_watcher->is_unregistered(); |
569 | m_image_ctx.apply_metadata(m_metadata, thread_safe); | |
570 | ||
571 | send_v2_get_op_features(); | |
7c673cae FG |
572 | return nullptr; |
573 | } | |
574 | ||
575 | template <typename I> | |
11fdf7f2 TL |
576 | void RefreshRequest<I>::send_v2_get_op_features() { |
577 | if ((m_features & RBD_FEATURE_OPERATIONS) == 0LL) { | |
578 | send_v2_get_group(); | |
579 | return; | |
580 | } | |
581 | ||
7c673cae FG |
582 | CephContext *cct = m_image_ctx.cct; |
583 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
584 | ||
585 | librados::ObjectReadOperation op; | |
11fdf7f2 | 586 | cls_client::op_features_get_start(&op); |
7c673cae | 587 | |
7c673cae | 588 | librados::AioCompletion *comp = create_rados_callback< |
11fdf7f2 | 589 | RefreshRequest<I>, &RefreshRequest<I>::handle_v2_get_op_features>(this); |
7c673cae FG |
590 | m_out_bl.clear(); |
591 | int r = m_image_ctx.md_ctx.aio_operate(m_image_ctx.header_oid, comp, &op, | |
592 | &m_out_bl); | |
11fdf7f2 | 593 | ceph_assert(r == 0); |
7c673cae FG |
594 | comp->release(); |
595 | } | |
596 | ||
597 | template <typename I> | |
11fdf7f2 | 598 | Context *RefreshRequest<I>::handle_v2_get_op_features(int *result) { |
7c673cae FG |
599 | CephContext *cct = m_image_ctx.cct; |
600 | ldout(cct, 10) << this << " " << __func__ << ": " | |
601 | << "r=" << *result << dendl; | |
602 | ||
11fdf7f2 TL |
603 | // -EOPNOTSUPP handler not required since feature bit implies OSD |
604 | // supports the method | |
7c673cae | 605 | if (*result == 0) { |
11fdf7f2 TL |
606 | auto it = m_out_bl.cbegin(); |
607 | cls_client::op_features_get_finish(&it, &m_op_features); | |
7c673cae | 608 | } else if (*result < 0) { |
11fdf7f2 | 609 | lderr(cct) << "failed to retrieve op features: " << cpp_strerror(*result) |
7c673cae FG |
610 | << dendl; |
611 | return m_on_finish; | |
612 | } | |
613 | ||
11fdf7f2 | 614 | send_v2_get_group(); |
7c673cae FG |
615 | return nullptr; |
616 | } | |
617 | ||
618 | template <typename I> | |
11fdf7f2 | 619 | void RefreshRequest<I>::send_v2_get_group() { |
7c673cae FG |
620 | CephContext *cct = m_image_ctx.cct; |
621 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
622 | ||
623 | librados::ObjectReadOperation op; | |
11fdf7f2 | 624 | cls_client::image_group_get_start(&op); |
7c673cae FG |
625 | |
626 | using klass = RefreshRequest<I>; | |
627 | librados::AioCompletion *comp = create_rados_callback< | |
11fdf7f2 | 628 | klass, &klass::handle_v2_get_group>(this); |
7c673cae FG |
629 | m_out_bl.clear(); |
630 | int r = m_image_ctx.md_ctx.aio_operate(m_image_ctx.header_oid, comp, &op, | |
631 | &m_out_bl); | |
11fdf7f2 | 632 | ceph_assert(r == 0); |
7c673cae FG |
633 | comp->release(); |
634 | } | |
635 | ||
636 | template <typename I> | |
11fdf7f2 | 637 | Context *RefreshRequest<I>::handle_v2_get_group(int *result) { |
7c673cae FG |
638 | CephContext *cct = m_image_ctx.cct; |
639 | ldout(cct, 10) << this << " " << __func__ << ": " | |
640 | << "r=" << *result << dendl; | |
641 | ||
642 | if (*result == 0) { | |
11fdf7f2 TL |
643 | auto it = m_out_bl.cbegin(); |
644 | cls_client::image_group_get_finish(&it, &m_group_spec); | |
7c673cae | 645 | } |
9f95a23c | 646 | if (*result < 0) { |
11fdf7f2 | 647 | lderr(cct) << "failed to retrieve group: " << cpp_strerror(*result) |
7c673cae FG |
648 | << dendl; |
649 | return m_on_finish; | |
650 | } | |
651 | ||
11fdf7f2 | 652 | send_v2_get_snapshots(); |
7c673cae FG |
653 | return nullptr; |
654 | } | |
655 | ||
656 | template <typename I> | |
11fdf7f2 TL |
657 | void RefreshRequest<I>::send_v2_get_snapshots() { |
658 | m_snap_infos.resize(m_snapc.snaps.size()); | |
659 | m_snap_flags.resize(m_snapc.snaps.size()); | |
660 | m_snap_parents.resize(m_snapc.snaps.size()); | |
661 | m_snap_protection.resize(m_snapc.snaps.size()); | |
662 | ||
663 | if (m_snapc.snaps.empty()) { | |
664 | send_v2_refresh_parent(); | |
665 | return; | |
666 | } | |
667 | ||
7c673cae FG |
668 | CephContext *cct = m_image_ctx.cct; |
669 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
670 | ||
671 | librados::ObjectReadOperation op; | |
11fdf7f2 | 672 | for (auto snap_id : m_snapc.snaps) { |
9f95a23c | 673 | if (m_legacy_snapshot) { |
11fdf7f2 TL |
674 | /// NOTE: remove after Luminous is retired |
675 | cls_client::get_snapshot_name_start(&op, snap_id); | |
676 | cls_client::get_size_start(&op, snap_id); | |
9f95a23c | 677 | cls_client::get_snapshot_timestamp_start(&op, snap_id); |
11fdf7f2 TL |
678 | } else { |
679 | cls_client::snapshot_get_start(&op, snap_id); | |
680 | } | |
681 | ||
682 | if (m_legacy_parent) { | |
683 | cls_client::get_parent_start(&op, snap_id); | |
684 | } else { | |
685 | cls_client::parent_overlap_get_start(&op, snap_id); | |
686 | } | |
687 | ||
688 | cls_client::get_flags_start(&op, snap_id); | |
689 | cls_client::get_protection_status_start(&op, snap_id); | |
690 | } | |
7c673cae FG |
691 | |
692 | using klass = RefreshRequest<I>; | |
693 | librados::AioCompletion *comp = create_rados_callback< | |
11fdf7f2 | 694 | klass, &klass::handle_v2_get_snapshots>(this); |
7c673cae FG |
695 | m_out_bl.clear(); |
696 | int r = m_image_ctx.md_ctx.aio_operate(m_image_ctx.header_oid, comp, &op, | |
11fdf7f2 TL |
697 | &m_out_bl); |
698 | ceph_assert(r == 0); | |
7c673cae FG |
699 | comp->release(); |
700 | } | |
701 | ||
702 | template <typename I> | |
11fdf7f2 | 703 | Context *RefreshRequest<I>::handle_v2_get_snapshots(int *result) { |
7c673cae FG |
704 | CephContext *cct = m_image_ctx.cct; |
705 | ldout(cct, 10) << this << " " << __func__ << ": " << "r=" << *result << dendl; | |
706 | ||
11fdf7f2 TL |
707 | auto it = m_out_bl.cbegin(); |
708 | for (size_t i = 0; i < m_snapc.snaps.size(); ++i) { | |
9f95a23c | 709 | if (m_legacy_snapshot) { |
11fdf7f2 TL |
710 | /// NOTE: remove after Luminous is retired |
711 | std::string snap_name; | |
712 | if (*result >= 0) { | |
713 | *result = cls_client::get_snapshot_name_finish(&it, &snap_name); | |
714 | } | |
7c673cae | 715 | |
11fdf7f2 TL |
716 | uint64_t snap_size; |
717 | if (*result >= 0) { | |
718 | uint8_t order; | |
719 | *result = cls_client::get_size_finish(&it, &snap_size, &order); | |
720 | } | |
7c673cae | 721 | |
11fdf7f2 | 722 | utime_t snap_timestamp; |
9f95a23c | 723 | if (*result >= 0) { |
11fdf7f2 TL |
724 | *result = cls_client::get_snapshot_timestamp_finish(&it, |
725 | &snap_timestamp); | |
726 | } | |
7c673cae | 727 | |
11fdf7f2 TL |
728 | if (*result >= 0) { |
729 | m_snap_infos[i] = {m_snapc.snaps[i], | |
730 | {cls::rbd::UserSnapshotNamespace{}}, | |
731 | snap_name, snap_size, snap_timestamp, 0}; | |
732 | } | |
733 | } else if (*result >= 0) { | |
734 | *result = cls_client::snapshot_get_finish(&it, &m_snap_infos[i]); | |
735 | } | |
7c673cae | 736 | |
11fdf7f2 TL |
737 | if (*result == 0) { |
738 | if (m_legacy_parent) { | |
739 | *result = cls_client::get_parent_finish(&it, &m_snap_parents[i].spec, | |
740 | &m_snap_parents[i].overlap); | |
741 | } else { | |
742 | std::optional<uint64_t> parent_overlap; | |
743 | *result = cls_client::parent_overlap_get_finish(&it, &parent_overlap); | |
744 | if (*result == 0 && parent_overlap && m_parent_md.spec.pool_id > -1) { | |
745 | m_snap_parents[i].spec = m_parent_md.spec; | |
746 | m_snap_parents[i].overlap = *parent_overlap; | |
747 | } | |
748 | } | |
749 | } | |
7c673cae | 750 | |
11fdf7f2 TL |
751 | if (*result >= 0) { |
752 | *result = cls_client::get_flags_finish(&it, &m_snap_flags[i]); | |
753 | } | |
7c673cae | 754 | |
11fdf7f2 TL |
755 | if (*result >= 0) { |
756 | *result = cls_client::get_protection_status_finish( | |
757 | &it, &m_snap_protection[i]); | |
758 | } | |
759 | ||
760 | if (*result < 0) { | |
761 | break; | |
762 | } | |
7c673cae | 763 | } |
11fdf7f2 | 764 | |
7c673cae FG |
765 | if (*result == -ENOENT) { |
766 | ldout(cct, 10) << "out-of-sync snapshot state detected" << dendl; | |
767 | send_v2_get_mutable_metadata(); | |
768 | return nullptr; | |
9f95a23c | 769 | } else if (!m_legacy_snapshot && *result == -EOPNOTSUPP) { |
11fdf7f2 | 770 | ldout(cct, 10) << "retrying using legacy snapshot methods" << dendl; |
9f95a23c | 771 | m_legacy_snapshot = true; |
11fdf7f2 TL |
772 | send_v2_get_snapshots(); |
773 | return nullptr; | |
7c673cae FG |
774 | } else if (*result < 0) { |
775 | lderr(cct) << "failed to retrieve snapshots: " << cpp_strerror(*result) | |
776 | << dendl; | |
777 | return m_on_finish; | |
778 | } | |
779 | ||
780 | send_v2_refresh_parent(); | |
781 | return nullptr; | |
782 | } | |
783 | ||
784 | template <typename I> | |
785 | void RefreshRequest<I>::send_v2_refresh_parent() { | |
786 | { | |
9f95a23c | 787 | std::shared_lock image_locker{m_image_ctx.image_lock}; |
7c673cae | 788 | |
11fdf7f2 TL |
789 | ParentImageInfo parent_md; |
790 | MigrationInfo migration_info; | |
791 | int r = get_parent_info(m_image_ctx.snap_id, &parent_md, &migration_info); | |
7c673cae | 792 | if (!m_skip_open_parent_image && (r < 0 || |
11fdf7f2 TL |
793 | RefreshParentRequest<I>::is_refresh_required(m_image_ctx, parent_md, |
794 | migration_info))) { | |
7c673cae FG |
795 | CephContext *cct = m_image_ctx.cct; |
796 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
797 | ||
798 | using klass = RefreshRequest<I>; | |
799 | Context *ctx = create_context_callback< | |
800 | klass, &klass::handle_v2_refresh_parent>(this); | |
801 | m_refresh_parent = RefreshParentRequest<I>::create( | |
11fdf7f2 | 802 | m_image_ctx, parent_md, migration_info, ctx); |
7c673cae FG |
803 | } |
804 | } | |
805 | ||
806 | if (m_refresh_parent != nullptr) { | |
807 | m_refresh_parent->send(); | |
808 | } else { | |
809 | send_v2_init_exclusive_lock(); | |
810 | } | |
811 | } | |
812 | ||
813 | template <typename I> | |
814 | Context *RefreshRequest<I>::handle_v2_refresh_parent(int *result) { | |
815 | CephContext *cct = m_image_ctx.cct; | |
816 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
817 | ||
818 | if (*result < 0) { | |
819 | lderr(cct) << "failed to refresh parent image: " << cpp_strerror(*result) | |
820 | << dendl; | |
821 | save_result(result); | |
822 | send_v2_apply(); | |
823 | return nullptr; | |
824 | } | |
825 | ||
826 | send_v2_init_exclusive_lock(); | |
827 | return nullptr; | |
828 | } | |
829 | ||
830 | template <typename I> | |
831 | void RefreshRequest<I>::send_v2_init_exclusive_lock() { | |
832 | if ((m_features & RBD_FEATURE_EXCLUSIVE_LOCK) == 0 || | |
9f95a23c | 833 | m_read_only || !m_image_ctx.snap_name.empty() || |
7c673cae FG |
834 | m_image_ctx.exclusive_lock != nullptr) { |
835 | send_v2_open_object_map(); | |
836 | return; | |
837 | } | |
838 | ||
839 | // implies exclusive lock dynamically enabled or image open in-progress | |
840 | CephContext *cct = m_image_ctx.cct; | |
841 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
842 | ||
843 | // TODO need safe shut down | |
844 | m_exclusive_lock = m_image_ctx.create_exclusive_lock(); | |
845 | ||
846 | using klass = RefreshRequest<I>; | |
847 | Context *ctx = create_context_callback< | |
848 | klass, &klass::handle_v2_init_exclusive_lock>(this); | |
849 | ||
9f95a23c | 850 | std::shared_lock owner_locker{m_image_ctx.owner_lock}; |
7c673cae FG |
851 | m_exclusive_lock->init(m_features, ctx); |
852 | } | |
853 | ||
854 | template <typename I> | |
855 | Context *RefreshRequest<I>::handle_v2_init_exclusive_lock(int *result) { | |
856 | CephContext *cct = m_image_ctx.cct; | |
857 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
858 | ||
859 | if (*result < 0) { | |
860 | lderr(cct) << "failed to initialize exclusive lock: " | |
861 | << cpp_strerror(*result) << dendl; | |
862 | save_result(result); | |
863 | } | |
864 | ||
865 | // object map and journal will be opened when exclusive lock is | |
866 | // acquired (if features are enabled) | |
867 | send_v2_apply(); | |
868 | return nullptr; | |
869 | } | |
870 | ||
871 | template <typename I> | |
872 | void RefreshRequest<I>::send_v2_open_journal() { | |
873 | bool journal_disabled = ( | |
874 | (m_features & RBD_FEATURE_JOURNALING) == 0 || | |
9f95a23c | 875 | m_read_only || |
7c673cae FG |
876 | !m_image_ctx.snap_name.empty() || |
877 | m_image_ctx.journal != nullptr || | |
878 | m_image_ctx.exclusive_lock == nullptr || | |
879 | !m_image_ctx.exclusive_lock->is_lock_owner()); | |
880 | bool journal_disabled_by_policy; | |
881 | { | |
9f95a23c | 882 | std::shared_lock image_locker{m_image_ctx.image_lock}; |
7c673cae FG |
883 | journal_disabled_by_policy = ( |
884 | !journal_disabled && | |
885 | m_image_ctx.get_journal_policy()->journal_disabled()); | |
886 | } | |
887 | ||
888 | if (journal_disabled || journal_disabled_by_policy) { | |
889 | // journal dynamically enabled -- doesn't own exclusive lock | |
890 | if ((m_features & RBD_FEATURE_JOURNALING) != 0 && | |
891 | !journal_disabled_by_policy && | |
892 | m_image_ctx.exclusive_lock != nullptr && | |
893 | m_image_ctx.journal == nullptr) { | |
224ce89b WB |
894 | m_image_ctx.io_work_queue->set_require_lock(librbd::io::DIRECTION_BOTH, |
895 | true); | |
7c673cae FG |
896 | } |
897 | send_v2_block_writes(); | |
898 | return; | |
899 | } | |
900 | ||
901 | // implies journal dynamically enabled since ExclusiveLock will init | |
902 | // the journal upon acquiring the lock | |
903 | CephContext *cct = m_image_ctx.cct; | |
904 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
905 | ||
906 | using klass = RefreshRequest<I>; | |
907 | Context *ctx = create_context_callback< | |
908 | klass, &klass::handle_v2_open_journal>(this); | |
909 | ||
910 | // TODO need safe close | |
911 | m_journal = m_image_ctx.create_journal(); | |
912 | m_journal->open(ctx); | |
913 | } | |
914 | ||
915 | template <typename I> | |
916 | Context *RefreshRequest<I>::handle_v2_open_journal(int *result) { | |
917 | CephContext *cct = m_image_ctx.cct; | |
918 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
919 | ||
920 | if (*result < 0) { | |
921 | lderr(cct) << "failed to initialize journal: " << cpp_strerror(*result) | |
922 | << dendl; | |
923 | save_result(result); | |
924 | } | |
925 | ||
926 | send_v2_block_writes(); | |
927 | return nullptr; | |
928 | } | |
929 | ||
930 | template <typename I> | |
931 | void RefreshRequest<I>::send_v2_block_writes() { | |
932 | bool disabled_journaling = false; | |
933 | { | |
9f95a23c | 934 | std::shared_lock image_locker{m_image_ctx.image_lock}; |
7c673cae FG |
935 | disabled_journaling = ((m_features & RBD_FEATURE_EXCLUSIVE_LOCK) != 0 && |
936 | (m_features & RBD_FEATURE_JOURNALING) == 0 && | |
937 | m_image_ctx.journal != nullptr); | |
938 | } | |
939 | ||
940 | if (!disabled_journaling) { | |
941 | send_v2_apply(); | |
942 | return; | |
943 | } | |
944 | ||
945 | CephContext *cct = m_image_ctx.cct; | |
946 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
947 | ||
948 | // we need to block writes temporarily to avoid in-flight journal | |
949 | // writes | |
950 | m_blocked_writes = true; | |
951 | Context *ctx = create_context_callback< | |
952 | RefreshRequest<I>, &RefreshRequest<I>::handle_v2_block_writes>(this); | |
953 | ||
9f95a23c | 954 | std::shared_lock owner_locker{m_image_ctx.owner_lock}; |
7c673cae FG |
955 | m_image_ctx.io_work_queue->block_writes(ctx); |
956 | } | |
957 | ||
958 | template <typename I> | |
959 | Context *RefreshRequest<I>::handle_v2_block_writes(int *result) { | |
960 | CephContext *cct = m_image_ctx.cct; | |
961 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
962 | ||
963 | if (*result < 0) { | |
964 | lderr(cct) << "failed to block writes: " << cpp_strerror(*result) | |
965 | << dendl; | |
966 | save_result(result); | |
967 | } | |
968 | send_v2_apply(); | |
969 | return nullptr; | |
970 | } | |
971 | ||
972 | template <typename I> | |
973 | void RefreshRequest<I>::send_v2_open_object_map() { | |
974 | if ((m_features & RBD_FEATURE_OBJECT_MAP) == 0 || | |
975 | m_image_ctx.object_map != nullptr || | |
976 | (m_image_ctx.snap_name.empty() && | |
9f95a23c | 977 | (m_read_only || |
7c673cae FG |
978 | m_image_ctx.exclusive_lock == nullptr || |
979 | !m_image_ctx.exclusive_lock->is_lock_owner()))) { | |
980 | send_v2_open_journal(); | |
981 | return; | |
982 | } | |
983 | ||
984 | // implies object map dynamically enabled or image open in-progress | |
985 | // since SetSnapRequest loads the object map for a snapshot and | |
986 | // ExclusiveLock loads the object map for HEAD | |
987 | CephContext *cct = m_image_ctx.cct; | |
988 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
989 | ||
990 | if (m_image_ctx.snap_name.empty()) { | |
991 | m_object_map = m_image_ctx.create_object_map(CEPH_NOSNAP); | |
992 | } else { | |
11fdf7f2 TL |
993 | for (size_t snap_idx = 0; snap_idx < m_snap_infos.size(); ++snap_idx) { |
994 | if (m_snap_infos[snap_idx].name == m_image_ctx.snap_name) { | |
7c673cae FG |
995 | m_object_map = m_image_ctx.create_object_map( |
996 | m_snapc.snaps[snap_idx].val); | |
997 | break; | |
998 | } | |
999 | } | |
1000 | ||
1001 | if (m_object_map == nullptr) { | |
1002 | lderr(cct) << "failed to locate snapshot: " << m_image_ctx.snap_name | |
1003 | << dendl; | |
1004 | send_v2_open_journal(); | |
1005 | return; | |
1006 | } | |
1007 | } | |
1008 | ||
1009 | using klass = RefreshRequest<I>; | |
1010 | Context *ctx = create_context_callback< | |
1011 | klass, &klass::handle_v2_open_object_map>(this); | |
1012 | m_object_map->open(ctx); | |
1013 | } | |
1014 | ||
1015 | template <typename I> | |
1016 | Context *RefreshRequest<I>::handle_v2_open_object_map(int *result) { | |
1017 | CephContext *cct = m_image_ctx.cct; | |
1018 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
1019 | ||
1020 | if (*result < 0) { | |
1021 | lderr(cct) << "failed to open object map: " << cpp_strerror(*result) | |
1022 | << dendl; | |
9f95a23c | 1023 | m_object_map->put(); |
7c673cae | 1024 | m_object_map = nullptr; |
11fdf7f2 TL |
1025 | |
1026 | if (*result != -EFBIG) { | |
1027 | save_result(result); | |
1028 | } | |
7c673cae FG |
1029 | } |
1030 | ||
1031 | send_v2_open_journal(); | |
1032 | return nullptr; | |
1033 | } | |
1034 | ||
1035 | template <typename I> | |
1036 | void RefreshRequest<I>::send_v2_apply() { | |
1037 | CephContext *cct = m_image_ctx.cct; | |
1038 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
1039 | ||
1040 | // ensure we are not in a rados callback when applying updates | |
1041 | using klass = RefreshRequest<I>; | |
1042 | Context *ctx = create_context_callback< | |
1043 | klass, &klass::handle_v2_apply>(this); | |
1044 | m_image_ctx.op_work_queue->queue(ctx, 0); | |
1045 | } | |
1046 | ||
1047 | template <typename I> | |
1048 | Context *RefreshRequest<I>::handle_v2_apply(int *result) { | |
1049 | CephContext *cct = m_image_ctx.cct; | |
1050 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
1051 | ||
1052 | apply(); | |
1053 | ||
1054 | return send_v2_finalize_refresh_parent(); | |
1055 | } | |
1056 | ||
1057 | template <typename I> | |
1058 | Context *RefreshRequest<I>::send_v2_finalize_refresh_parent() { | |
1059 | if (m_refresh_parent == nullptr) { | |
1060 | return send_v2_shut_down_exclusive_lock(); | |
1061 | } | |
1062 | ||
1063 | CephContext *cct = m_image_ctx.cct; | |
1064 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
1065 | ||
1066 | using klass = RefreshRequest<I>; | |
1067 | Context *ctx = create_context_callback< | |
1068 | klass, &klass::handle_v2_finalize_refresh_parent>(this); | |
1069 | m_refresh_parent->finalize(ctx); | |
1070 | return nullptr; | |
1071 | } | |
1072 | ||
1073 | template <typename I> | |
1074 | Context *RefreshRequest<I>::handle_v2_finalize_refresh_parent(int *result) { | |
1075 | CephContext *cct = m_image_ctx.cct; | |
1076 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
1077 | ||
11fdf7f2 | 1078 | ceph_assert(m_refresh_parent != nullptr); |
7c673cae FG |
1079 | delete m_refresh_parent; |
1080 | m_refresh_parent = nullptr; | |
1081 | ||
1082 | return send_v2_shut_down_exclusive_lock(); | |
1083 | } | |
1084 | ||
1085 | template <typename I> | |
1086 | Context *RefreshRequest<I>::send_v2_shut_down_exclusive_lock() { | |
1087 | if (m_exclusive_lock == nullptr) { | |
1088 | return send_v2_close_journal(); | |
1089 | } | |
1090 | ||
1091 | CephContext *cct = m_image_ctx.cct; | |
1092 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
1093 | ||
1094 | // exclusive lock feature was dynamically disabled. in-flight IO will be | |
1095 | // flushed and in-flight requests will be canceled before releasing lock | |
1096 | using klass = RefreshRequest<I>; | |
1097 | Context *ctx = create_context_callback< | |
1098 | klass, &klass::handle_v2_shut_down_exclusive_lock>(this); | |
1099 | m_exclusive_lock->shut_down(ctx); | |
1100 | return nullptr; | |
1101 | } | |
1102 | ||
1103 | template <typename I> | |
1104 | Context *RefreshRequest<I>::handle_v2_shut_down_exclusive_lock(int *result) { | |
1105 | CephContext *cct = m_image_ctx.cct; | |
1106 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
1107 | ||
1108 | if (*result < 0) { | |
1109 | lderr(cct) << "failed to shut down exclusive lock: " | |
1110 | << cpp_strerror(*result) << dendl; | |
1111 | save_result(result); | |
1112 | } | |
1113 | ||
1114 | { | |
9f95a23c | 1115 | std::unique_lock owner_locker{m_image_ctx.owner_lock}; |
11fdf7f2 | 1116 | ceph_assert(m_image_ctx.exclusive_lock == nullptr); |
7c673cae FG |
1117 | } |
1118 | ||
11fdf7f2 | 1119 | ceph_assert(m_exclusive_lock != nullptr); |
9f95a23c | 1120 | m_exclusive_lock->put(); |
7c673cae FG |
1121 | m_exclusive_lock = nullptr; |
1122 | ||
1123 | return send_v2_close_journal(); | |
1124 | } | |
1125 | ||
1126 | template <typename I> | |
1127 | Context *RefreshRequest<I>::send_v2_close_journal() { | |
1128 | if (m_journal == nullptr) { | |
1129 | return send_v2_close_object_map(); | |
1130 | } | |
1131 | ||
1132 | CephContext *cct = m_image_ctx.cct; | |
1133 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
1134 | ||
1135 | // journal feature was dynamically disabled | |
1136 | using klass = RefreshRequest<I>; | |
1137 | Context *ctx = create_context_callback< | |
1138 | klass, &klass::handle_v2_close_journal>(this); | |
1139 | m_journal->close(ctx); | |
1140 | return nullptr; | |
1141 | } | |
1142 | ||
1143 | template <typename I> | |
1144 | Context *RefreshRequest<I>::handle_v2_close_journal(int *result) { | |
1145 | CephContext *cct = m_image_ctx.cct; | |
1146 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
1147 | ||
1148 | if (*result < 0) { | |
1149 | save_result(result); | |
1150 | lderr(cct) << "failed to close journal: " << cpp_strerror(*result) | |
1151 | << dendl; | |
1152 | } | |
1153 | ||
11fdf7f2 | 1154 | ceph_assert(m_journal != nullptr); |
9f95a23c | 1155 | m_journal->put(); |
7c673cae FG |
1156 | m_journal = nullptr; |
1157 | ||
11fdf7f2 | 1158 | ceph_assert(m_blocked_writes); |
7c673cae FG |
1159 | m_blocked_writes = false; |
1160 | ||
1161 | m_image_ctx.io_work_queue->unblock_writes(); | |
1162 | return send_v2_close_object_map(); | |
1163 | } | |
1164 | ||
1165 | template <typename I> | |
1166 | Context *RefreshRequest<I>::send_v2_close_object_map() { | |
1167 | if (m_object_map == nullptr) { | |
1168 | return send_flush_aio(); | |
1169 | } | |
1170 | ||
1171 | CephContext *cct = m_image_ctx.cct; | |
1172 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
1173 | ||
1174 | // object map was dynamically disabled | |
1175 | using klass = RefreshRequest<I>; | |
1176 | Context *ctx = create_context_callback< | |
1177 | klass, &klass::handle_v2_close_object_map>(this); | |
1178 | m_object_map->close(ctx); | |
1179 | return nullptr; | |
1180 | } | |
1181 | ||
1182 | template <typename I> | |
1183 | Context *RefreshRequest<I>::handle_v2_close_object_map(int *result) { | |
1184 | CephContext *cct = m_image_ctx.cct; | |
1185 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
1186 | ||
11fdf7f2 TL |
1187 | if (*result < 0) { |
1188 | lderr(cct) << "failed to close object map: " << cpp_strerror(*result) | |
1189 | << dendl; | |
1190 | } | |
1191 | ||
1192 | ceph_assert(m_object_map != nullptr); | |
9f95a23c TL |
1193 | |
1194 | m_object_map->put(); | |
7c673cae FG |
1195 | m_object_map = nullptr; |
1196 | ||
1197 | return send_flush_aio(); | |
1198 | } | |
1199 | ||
1200 | template <typename I> | |
1201 | Context *RefreshRequest<I>::send_flush_aio() { | |
1202 | if (m_incomplete_update && m_error_result == 0) { | |
1203 | // if this was a partial refresh, notify ImageState | |
1204 | m_error_result = -ERESTART; | |
1205 | } | |
1206 | ||
1207 | if (m_flush_aio) { | |
1208 | CephContext *cct = m_image_ctx.cct; | |
1209 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
1210 | ||
9f95a23c | 1211 | std::shared_lock owner_locker{m_image_ctx.owner_lock}; |
11fdf7f2 TL |
1212 | auto ctx = create_context_callback< |
1213 | RefreshRequest<I>, &RefreshRequest<I>::handle_flush_aio>(this); | |
494da23a | 1214 | auto aio_comp = io::AioCompletion::create_and_start( |
11fdf7f2 TL |
1215 | ctx, util::get_image_ctx(&m_image_ctx), io::AIO_TYPE_FLUSH); |
1216 | auto req = io::ImageDispatchSpec<I>::create_flush_request( | |
1217 | m_image_ctx, aio_comp, io::FLUSH_SOURCE_INTERNAL, {}); | |
1218 | req->send(); | |
1219 | delete req; | |
7c673cae FG |
1220 | return nullptr; |
1221 | } else if (m_error_result < 0) { | |
1222 | // propagate saved error back to caller | |
1223 | Context *ctx = create_context_callback< | |
1224 | RefreshRequest<I>, &RefreshRequest<I>::handle_error>(this); | |
1225 | m_image_ctx.op_work_queue->queue(ctx, 0); | |
1226 | return nullptr; | |
1227 | } | |
1228 | ||
1229 | return m_on_finish; | |
1230 | } | |
1231 | ||
1232 | template <typename I> | |
1233 | Context *RefreshRequest<I>::handle_flush_aio(int *result) { | |
1234 | CephContext *cct = m_image_ctx.cct; | |
1235 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
1236 | ||
1237 | if (*result < 0) { | |
1238 | lderr(cct) << "failed to flush pending AIO: " << cpp_strerror(*result) | |
1239 | << dendl; | |
1240 | } | |
1241 | ||
1242 | return handle_error(result); | |
1243 | } | |
1244 | ||
1245 | template <typename I> | |
1246 | Context *RefreshRequest<I>::handle_error(int *result) { | |
1247 | if (m_error_result < 0) { | |
1248 | *result = m_error_result; | |
1249 | ||
1250 | CephContext *cct = m_image_ctx.cct; | |
1251 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
1252 | } | |
1253 | return m_on_finish; | |
1254 | } | |
1255 | ||
1256 | template <typename I> | |
1257 | void RefreshRequest<I>::apply() { | |
1258 | CephContext *cct = m_image_ctx.cct; | |
1259 | ldout(cct, 20) << this << " " << __func__ << dendl; | |
1260 | ||
9f95a23c | 1261 | std::scoped_lock locker{m_image_ctx.owner_lock, m_image_ctx.image_lock}; |
7c673cae | 1262 | |
9f95a23c TL |
1263 | m_image_ctx.read_only_flags = m_read_only_flags; |
1264 | m_image_ctx.read_only = m_read_only; | |
1265 | m_image_ctx.size = m_size; | |
1266 | m_image_ctx.lockers = m_lockers; | |
1267 | m_image_ctx.lock_tag = m_lock_tag; | |
1268 | m_image_ctx.exclusive_locked = m_exclusive_locked; | |
7c673cae | 1269 | |
9f95a23c | 1270 | std::map<uint64_t, uint64_t> migration_reverse_snap_seq; |
7c673cae | 1271 | |
9f95a23c TL |
1272 | if (m_image_ctx.old_format) { |
1273 | m_image_ctx.order = m_order; | |
1274 | m_image_ctx.features = 0; | |
1275 | m_image_ctx.flags = 0; | |
1276 | m_image_ctx.op_features = 0; | |
1277 | m_image_ctx.operations_disabled = false; | |
1278 | m_image_ctx.object_prefix = std::move(m_object_prefix); | |
1279 | m_image_ctx.init_layout(m_image_ctx.md_ctx.get_id()); | |
1280 | } else { | |
1281 | // HEAD revision doesn't have a defined overlap so it's only | |
1282 | // applicable to snapshots | |
1283 | if (!m_head_parent_overlap) { | |
1284 | m_parent_md = {}; | |
1285 | } | |
11fdf7f2 | 1286 | |
9f95a23c TL |
1287 | m_image_ctx.features = m_features; |
1288 | m_image_ctx.flags = m_flags; | |
1289 | m_image_ctx.op_features = m_op_features; | |
1290 | m_image_ctx.operations_disabled = ( | |
1291 | (m_op_features & ~RBD_OPERATION_FEATURES_ALL) != 0ULL); | |
1292 | m_image_ctx.group_spec = m_group_spec; | |
1293 | if (get_migration_info(&m_image_ctx.parent_md, | |
1294 | &m_image_ctx.migration_info)) { | |
1295 | for (auto it : m_image_ctx.migration_info.snap_map) { | |
1296 | migration_reverse_snap_seq[it.second.front()] = it.first; | |
11fdf7f2 | 1297 | } |
9f95a23c TL |
1298 | } else { |
1299 | m_image_ctx.parent_md = m_parent_md; | |
1300 | m_image_ctx.migration_info = {}; | |
1301 | } | |
11fdf7f2 | 1302 | |
9f95a23c TL |
1303 | librados::Rados rados(m_image_ctx.md_ctx); |
1304 | int8_t require_osd_release; | |
1305 | int r = rados.get_min_compatible_osd(&require_osd_release); | |
1306 | if (r == 0 && require_osd_release >= CEPH_RELEASE_OCTOPUS) { | |
1307 | m_image_ctx.enable_sparse_copyup = true; | |
7c673cae | 1308 | } |
9f95a23c | 1309 | } |
7c673cae | 1310 | |
9f95a23c TL |
1311 | for (size_t i = 0; i < m_snapc.snaps.size(); ++i) { |
1312 | std::vector<librados::snap_t>::const_iterator it = std::find( | |
1313 | m_image_ctx.snaps.begin(), m_image_ctx.snaps.end(), | |
1314 | m_snapc.snaps[i].val); | |
1315 | if (it == m_image_ctx.snaps.end()) { | |
1316 | m_flush_aio = true; | |
1317 | ldout(cct, 20) << "new snapshot id=" << m_snapc.snaps[i].val | |
1318 | << " name=" << m_snap_infos[i].name | |
1319 | << " size=" << m_snap_infos[i].image_size | |
1320 | << dendl; | |
7c673cae | 1321 | } |
9f95a23c | 1322 | } |
7c673cae | 1323 | |
9f95a23c TL |
1324 | m_image_ctx.snaps.clear(); |
1325 | m_image_ctx.snap_info.clear(); | |
1326 | m_image_ctx.snap_ids.clear(); | |
1327 | auto overlap = m_image_ctx.parent_md.overlap; | |
1328 | for (size_t i = 0; i < m_snapc.snaps.size(); ++i) { | |
1329 | uint64_t flags = m_image_ctx.old_format ? 0 : m_snap_flags[i]; | |
1330 | uint8_t protection_status = m_image_ctx.old_format ? | |
1331 | static_cast<uint8_t>(RBD_PROTECTION_STATUS_UNPROTECTED) : | |
1332 | m_snap_protection[i]; | |
1333 | ParentImageInfo parent; | |
1334 | if (!m_image_ctx.old_format) { | |
1335 | if (!m_image_ctx.migration_info.empty()) { | |
1336 | parent = m_image_ctx.parent_md; | |
1337 | auto it = migration_reverse_snap_seq.find(m_snapc.snaps[i].val); | |
1338 | if (it != migration_reverse_snap_seq.end()) { | |
1339 | parent.spec.snap_id = it->second; | |
1340 | parent.overlap = m_snap_infos[i].image_size; | |
11fdf7f2 | 1341 | } else { |
9f95a23c TL |
1342 | overlap = std::min(overlap, m_snap_infos[i].image_size); |
1343 | parent.overlap = overlap; | |
11fdf7f2 | 1344 | } |
9f95a23c TL |
1345 | } else { |
1346 | parent = m_snap_parents[i]; | |
7c673cae | 1347 | } |
7c673cae | 1348 | } |
9f95a23c TL |
1349 | m_image_ctx.add_snap(m_snap_infos[i].snapshot_namespace, |
1350 | m_snap_infos[i].name, m_snapc.snaps[i].val, | |
1351 | m_snap_infos[i].image_size, parent, | |
1352 | protection_status, flags, | |
1353 | m_snap_infos[i].timestamp); | |
1354 | } | |
1355 | m_image_ctx.parent_md.overlap = std::min(overlap, m_image_ctx.size); | |
1356 | m_image_ctx.snapc = m_snapc; | |
7c673cae | 1357 | |
9f95a23c TL |
1358 | if (m_image_ctx.snap_id != CEPH_NOSNAP && |
1359 | m_image_ctx.get_snap_id(m_image_ctx.snap_namespace, | |
1360 | m_image_ctx.snap_name) != m_image_ctx.snap_id) { | |
1361 | lderr(cct) << "tried to read from a snapshot that no longer exists: " | |
1362 | << m_image_ctx.snap_name << dendl; | |
1363 | m_image_ctx.snap_exists = false; | |
1364 | } | |
7c673cae | 1365 | |
9f95a23c TL |
1366 | if (m_refresh_parent != nullptr) { |
1367 | m_refresh_parent->apply(); | |
1368 | } | |
1369 | if (m_image_ctx.data_ctx.is_valid()) { | |
1370 | m_image_ctx.data_ctx.selfmanaged_snap_set_write_ctx(m_image_ctx.snapc.seq, | |
1371 | m_image_ctx.snaps); | |
1372 | } | |
1373 | ||
1374 | // handle dynamically enabled / disabled features | |
1375 | if (m_image_ctx.exclusive_lock != nullptr && | |
1376 | !m_image_ctx.test_features(RBD_FEATURE_EXCLUSIVE_LOCK, | |
1377 | m_image_ctx.image_lock)) { | |
1378 | // disabling exclusive lock will automatically handle closing | |
1379 | // object map and journaling | |
1380 | ceph_assert(m_exclusive_lock == nullptr); | |
1381 | m_exclusive_lock = m_image_ctx.exclusive_lock; | |
1382 | } else { | |
1383 | if (m_exclusive_lock != nullptr) { | |
1384 | ceph_assert(m_image_ctx.exclusive_lock == nullptr); | |
1385 | std::swap(m_exclusive_lock, m_image_ctx.exclusive_lock); | |
1386 | } | |
1387 | if (!m_image_ctx.test_features(RBD_FEATURE_JOURNALING, | |
1388 | m_image_ctx.image_lock)) { | |
1389 | if (!m_image_ctx.clone_copy_on_read && m_image_ctx.journal != nullptr) { | |
1390 | m_image_ctx.io_work_queue->set_require_lock(io::DIRECTION_READ, | |
1391 | false); | |
7c673cae | 1392 | } |
9f95a23c TL |
1393 | std::swap(m_journal, m_image_ctx.journal); |
1394 | } else if (m_journal != nullptr) { | |
1395 | std::swap(m_journal, m_image_ctx.journal); | |
1396 | } | |
1397 | if (!m_image_ctx.test_features(RBD_FEATURE_OBJECT_MAP, | |
1398 | m_image_ctx.image_lock) || | |
1399 | m_object_map != nullptr) { | |
1400 | std::swap(m_object_map, m_image_ctx.object_map); | |
7c673cae FG |
1401 | } |
1402 | } | |
1403 | } | |
1404 | ||
1405 | template <typename I> | |
1406 | int RefreshRequest<I>::get_parent_info(uint64_t snap_id, | |
11fdf7f2 TL |
1407 | ParentImageInfo *parent_md, |
1408 | MigrationInfo *migration_info) { | |
1409 | if (get_migration_info(parent_md, migration_info)) { | |
1410 | return 0; | |
1411 | } else if (snap_id == CEPH_NOSNAP) { | |
7c673cae | 1412 | *parent_md = m_parent_md; |
11fdf7f2 | 1413 | *migration_info = {}; |
7c673cae FG |
1414 | return 0; |
1415 | } else { | |
1416 | for (size_t i = 0; i < m_snapc.snaps.size(); ++i) { | |
1417 | if (m_snapc.snaps[i].val == snap_id) { | |
1418 | *parent_md = m_snap_parents[i]; | |
11fdf7f2 | 1419 | *migration_info = {}; |
7c673cae FG |
1420 | return 0; |
1421 | } | |
1422 | } | |
1423 | } | |
1424 | return -ENOENT; | |
1425 | } | |
1426 | ||
11fdf7f2 TL |
1427 | template <typename I> |
1428 | bool RefreshRequest<I>::get_migration_info(ParentImageInfo *parent_md, | |
1429 | MigrationInfo *migration_info) { | |
1430 | if (m_migration_spec.header_type != cls::rbd::MIGRATION_HEADER_TYPE_DST || | |
1431 | (m_migration_spec.state != cls::rbd::MIGRATION_STATE_PREPARED && | |
1432 | m_migration_spec.state != cls::rbd::MIGRATION_STATE_EXECUTING)) { | |
1433 | ceph_assert(m_migration_spec.header_type == | |
1434 | cls::rbd::MIGRATION_HEADER_TYPE_SRC || | |
1435 | m_migration_spec.pool_id == -1 || | |
1436 | m_migration_spec.state == cls::rbd::MIGRATION_STATE_EXECUTED); | |
1437 | ||
1438 | return false; | |
1439 | } | |
1440 | ||
1441 | parent_md->spec.pool_id = m_migration_spec.pool_id; | |
1442 | parent_md->spec.pool_namespace = m_migration_spec.pool_namespace; | |
1443 | parent_md->spec.image_id = m_migration_spec.image_id; | |
1444 | parent_md->spec.snap_id = CEPH_NOSNAP; | |
1445 | parent_md->overlap = std::min(m_size, m_migration_spec.overlap); | |
1446 | ||
1447 | auto snap_seqs = m_migration_spec.snap_seqs; | |
1448 | // If new snapshots have been created on destination image after | |
1449 | // migration stared, map the source CEPH_NOSNAP to the earliest of | |
1450 | // these snapshots. | |
1451 | snapid_t snap_id = snap_seqs.empty() ? 0 : snap_seqs.rbegin()->second; | |
1452 | auto it = std::upper_bound(m_snapc.snaps.rbegin(), m_snapc.snaps.rend(), | |
1453 | snap_id); | |
1454 | if (it != m_snapc.snaps.rend()) { | |
1455 | snap_seqs[CEPH_NOSNAP] = *it; | |
1456 | } else { | |
1457 | snap_seqs[CEPH_NOSNAP] = CEPH_NOSNAP; | |
1458 | } | |
1459 | ||
1460 | std::set<uint64_t> snap_ids; | |
1461 | for (auto& it : snap_seqs) { | |
1462 | snap_ids.insert(it.second); | |
1463 | } | |
1464 | uint64_t overlap = snap_ids.find(CEPH_NOSNAP) != snap_ids.end() ? | |
1465 | parent_md->overlap : 0; | |
1466 | for (size_t i = 0; i < m_snapc.snaps.size(); ++i) { | |
1467 | if (snap_ids.find(m_snapc.snaps[i].val) != snap_ids.end()) { | |
1468 | overlap = std::max(overlap, m_snap_infos[i].image_size); | |
1469 | } | |
1470 | } | |
1471 | ||
1472 | *migration_info = {m_migration_spec.pool_id, m_migration_spec.pool_namespace, | |
1473 | m_migration_spec.image_name, m_migration_spec.image_id, {}, | |
1474 | overlap, m_migration_spec.flatten}; | |
1475 | ||
9f95a23c TL |
1476 | deep_copy::util::compute_snap_map(m_image_ctx.cct, 0, CEPH_NOSNAP, {}, |
1477 | snap_seqs, &migration_info->snap_map); | |
11fdf7f2 TL |
1478 | return true; |
1479 | } | |
1480 | ||
7c673cae FG |
1481 | } // namespace image |
1482 | } // namespace librbd | |
1483 | ||
1484 | template class librbd::image::RefreshRequest<librbd::ImageCtx>; |