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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include "librbd/image/OpenRequest.h" | |
5 | #include "common/dout.h" | |
6 | #include "common/errno.h" | |
7 | #include "cls/rbd/cls_rbd_client.h" | |
8 | #include "librbd/ImageCtx.h" | |
9 | #include "librbd/Utils.h" | |
10 | #include "librbd/image/CloseRequest.h" | |
11 | #include "librbd/image/RefreshRequest.h" | |
12 | #include "librbd/image/SetSnapRequest.h" | |
13 | #include <boost/algorithm/string/predicate.hpp> | |
14 | #include "include/assert.h" | |
15 | ||
16 | #define dout_subsys ceph_subsys_rbd | |
17 | #undef dout_prefix | |
18 | #define dout_prefix *_dout << "librbd::image::OpenRequest: " | |
19 | ||
20 | namespace librbd { | |
21 | namespace image { | |
22 | ||
23 | namespace { | |
24 | ||
25 | static uint64_t MAX_METADATA_ITEMS = 128; | |
26 | ||
27 | } | |
28 | ||
29 | using util::create_context_callback; | |
30 | using util::create_rados_callback; | |
31 | ||
32 | template <typename I> | |
33 | OpenRequest<I>::OpenRequest(I *image_ctx, bool skip_open_parent, | |
34 | Context *on_finish) | |
35 | : m_image_ctx(image_ctx), m_skip_open_parent_image(skip_open_parent), | |
36 | m_on_finish(on_finish), m_error_result(0), | |
37 | m_last_metadata_key(ImageCtx::METADATA_CONF_PREFIX) { | |
38 | } | |
39 | ||
40 | template <typename I> | |
41 | void OpenRequest<I>::send() { | |
42 | send_v2_detect_header(); | |
43 | } | |
44 | ||
45 | template <typename I> | |
46 | void OpenRequest<I>::send_v1_detect_header() { | |
47 | librados::ObjectReadOperation op; | |
48 | op.stat(NULL, NULL, NULL); | |
49 | ||
50 | using klass = OpenRequest<I>; | |
51 | librados::AioCompletion *comp = | |
52 | create_rados_callback<klass, &klass::handle_v1_detect_header>(this); | |
53 | m_out_bl.clear(); | |
54 | m_image_ctx->md_ctx.aio_operate(util::old_header_name(m_image_ctx->name), | |
55 | comp, &op, &m_out_bl); | |
56 | comp->release(); | |
57 | } | |
58 | ||
59 | template <typename I> | |
60 | Context *OpenRequest<I>::handle_v1_detect_header(int *result) { | |
61 | CephContext *cct = m_image_ctx->cct; | |
62 | ldout(cct, 10) << __func__ << ": r=" << *result << dendl; | |
63 | ||
64 | if (*result < 0) { | |
65 | if (*result != -ENOENT) { | |
66 | lderr(cct) << "failed to stat image header: " << cpp_strerror(*result) | |
67 | << dendl; | |
68 | } | |
69 | send_close_image(*result); | |
70 | } else { | |
71 | ldout(cct, 1) << "RBD image format 1 is deprecated. " | |
72 | << "Please copy this image to image format 2." << dendl; | |
73 | ||
74 | m_image_ctx->old_format = true; | |
75 | m_image_ctx->header_oid = util::old_header_name(m_image_ctx->name); | |
76 | m_image_ctx->apply_metadata({}); | |
77 | ||
78 | send_register_watch(); | |
79 | } | |
80 | return nullptr; | |
81 | } | |
82 | ||
83 | template <typename I> | |
84 | void OpenRequest<I>::send_v2_detect_header() { | |
85 | if (m_image_ctx->id.empty()) { | |
86 | CephContext *cct = m_image_ctx->cct; | |
87 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
88 | ||
89 | librados::ObjectReadOperation op; | |
90 | op.stat(NULL, NULL, NULL); | |
91 | ||
92 | using klass = OpenRequest<I>; | |
93 | librados::AioCompletion *comp = | |
94 | create_rados_callback<klass, &klass::handle_v2_detect_header>(this); | |
95 | m_out_bl.clear(); | |
96 | m_image_ctx->md_ctx.aio_operate(util::id_obj_name(m_image_ctx->name), | |
97 | comp, &op, &m_out_bl); | |
98 | comp->release(); | |
99 | } else { | |
100 | send_v2_get_name(); | |
101 | } | |
102 | } | |
103 | ||
104 | template <typename I> | |
105 | Context *OpenRequest<I>::handle_v2_detect_header(int *result) { | |
106 | CephContext *cct = m_image_ctx->cct; | |
107 | ldout(cct, 10) << __func__ << ": r=" << *result << dendl; | |
108 | ||
109 | if (*result == -ENOENT) { | |
110 | send_v1_detect_header(); | |
111 | } else if (*result < 0) { | |
112 | lderr(cct) << "failed to stat v2 image header: " << cpp_strerror(*result) | |
113 | << dendl; | |
114 | send_close_image(*result); | |
115 | } else { | |
116 | m_image_ctx->old_format = false; | |
117 | send_v2_get_id(); | |
118 | } | |
119 | return nullptr; | |
120 | } | |
121 | ||
122 | template <typename I> | |
123 | void OpenRequest<I>::send_v2_get_id() { | |
124 | CephContext *cct = m_image_ctx->cct; | |
125 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
126 | ||
127 | librados::ObjectReadOperation op; | |
128 | cls_client::get_id_start(&op); | |
129 | ||
130 | using klass = OpenRequest<I>; | |
131 | librados::AioCompletion *comp = | |
132 | create_rados_callback<klass, &klass::handle_v2_get_id>(this); | |
133 | m_out_bl.clear(); | |
134 | m_image_ctx->md_ctx.aio_operate(util::id_obj_name(m_image_ctx->name), | |
135 | comp, &op, &m_out_bl); | |
136 | comp->release(); | |
137 | } | |
138 | ||
139 | template <typename I> | |
140 | Context *OpenRequest<I>::handle_v2_get_id(int *result) { | |
141 | CephContext *cct = m_image_ctx->cct; | |
142 | ldout(cct, 10) << __func__ << ": r=" << *result << dendl; | |
143 | ||
144 | if (*result == 0) { | |
145 | bufferlist::iterator it = m_out_bl.begin(); | |
146 | *result = cls_client::get_id_finish(&it, &m_image_ctx->id); | |
147 | } | |
148 | if (*result < 0) { | |
149 | lderr(cct) << "failed to retrieve image id: " << cpp_strerror(*result) | |
150 | << dendl; | |
151 | send_close_image(*result); | |
152 | } else { | |
153 | send_v2_get_immutable_metadata(); | |
154 | } | |
155 | return nullptr; | |
156 | } | |
157 | ||
158 | template <typename I> | |
159 | void OpenRequest<I>::send_v2_get_name() { | |
160 | CephContext *cct = m_image_ctx->cct; | |
161 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
162 | ||
163 | librados::ObjectReadOperation op; | |
164 | cls_client::dir_get_name_start(&op, m_image_ctx->id); | |
165 | ||
166 | using klass = OpenRequest<I>; | |
167 | librados::AioCompletion *comp = create_rados_callback< | |
168 | klass, &klass::handle_v2_get_name>(this); | |
169 | m_out_bl.clear(); | |
170 | m_image_ctx->md_ctx.aio_operate(RBD_DIRECTORY, comp, &op, &m_out_bl); | |
171 | comp->release(); | |
172 | } | |
173 | ||
174 | template <typename I> | |
175 | Context *OpenRequest<I>::handle_v2_get_name(int *result) { | |
176 | CephContext *cct = m_image_ctx->cct; | |
177 | ldout(cct, 10) << __func__ << ": r=" << *result << dendl; | |
178 | ||
179 | if (*result == 0) { | |
180 | bufferlist::iterator it = m_out_bl.begin(); | |
181 | *result = cls_client::dir_get_name_finish(&it, &m_image_ctx->name); | |
182 | } | |
183 | if (*result < 0 && *result != -ENOENT) { | |
184 | lderr(cct) << "failed to retreive name: " | |
185 | << cpp_strerror(*result) << dendl; | |
186 | send_close_image(*result); | |
187 | } else if (*result == -ENOENT) { | |
188 | // image does not exist in directory, look in the trash bin | |
189 | ldout(cct, 10) << "image id " << m_image_ctx->id << " does not exist in " | |
190 | << "rbd directory, searching in rbd trash..." << dendl; | |
191 | send_v2_get_name_from_trash(); | |
192 | } else { | |
193 | send_v2_get_immutable_metadata(); | |
194 | } | |
195 | ||
196 | return nullptr; | |
197 | } | |
198 | ||
199 | template <typename I> | |
200 | void OpenRequest<I>::send_v2_get_name_from_trash() { | |
201 | CephContext *cct = m_image_ctx->cct; | |
202 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
203 | ||
204 | librados::ObjectReadOperation op; | |
205 | cls_client::trash_get_start(&op, m_image_ctx->id); | |
206 | ||
207 | using klass = OpenRequest<I>; | |
208 | librados::AioCompletion *comp = create_rados_callback< | |
209 | klass, &klass::handle_v2_get_name_from_trash>(this); | |
210 | m_out_bl.clear(); | |
211 | m_image_ctx->md_ctx.aio_operate(RBD_TRASH, comp, &op, &m_out_bl); | |
212 | comp->release(); | |
213 | } | |
214 | ||
215 | template <typename I> | |
216 | Context *OpenRequest<I>::handle_v2_get_name_from_trash(int *result) { | |
217 | CephContext *cct = m_image_ctx->cct; | |
218 | ldout(cct, 10) << __func__ << ": r=" << *result << dendl; | |
219 | ||
220 | cls::rbd::TrashImageSpec trash_spec; | |
221 | if (*result == 0) { | |
222 | bufferlist::iterator it = m_out_bl.begin(); | |
223 | *result = cls_client::trash_get_finish(&it, &trash_spec); | |
224 | m_image_ctx->name = trash_spec.name; | |
225 | } | |
226 | if (*result < 0) { | |
227 | if (*result == -EOPNOTSUPP) { | |
228 | *result = -ENOENT; | |
229 | } else if (*result == -ENOENT) { | |
230 | lderr(cct) << "image id " << m_image_ctx->id << " does not exist in rbd " | |
231 | << "trash, failed to retrieve image name: " | |
232 | << cpp_strerror(*result) << dendl; | |
233 | } else { | |
234 | lderr(cct) << "failed to retreive name from trash: " | |
235 | << cpp_strerror(*result) << dendl; | |
236 | } | |
237 | send_close_image(*result); | |
238 | } else { | |
239 | send_v2_get_immutable_metadata(); | |
240 | } | |
241 | ||
242 | return nullptr; | |
243 | } | |
244 | ||
245 | template <typename I> | |
246 | void OpenRequest<I>::send_v2_get_immutable_metadata() { | |
247 | CephContext *cct = m_image_ctx->cct; | |
248 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
249 | ||
250 | m_image_ctx->old_format = false; | |
251 | m_image_ctx->header_oid = util::header_name(m_image_ctx->id); | |
252 | ||
253 | librados::ObjectReadOperation op; | |
254 | cls_client::get_immutable_metadata_start(&op); | |
255 | ||
256 | using klass = OpenRequest<I>; | |
257 | librados::AioCompletion *comp = create_rados_callback< | |
258 | klass, &klass::handle_v2_get_immutable_metadata>(this); | |
259 | m_out_bl.clear(); | |
260 | m_image_ctx->md_ctx.aio_operate(m_image_ctx->header_oid, comp, &op, | |
261 | &m_out_bl); | |
262 | comp->release(); | |
263 | } | |
264 | ||
265 | template <typename I> | |
266 | Context *OpenRequest<I>::handle_v2_get_immutable_metadata(int *result) { | |
267 | CephContext *cct = m_image_ctx->cct; | |
268 | ldout(cct, 10) << __func__ << ": r=" << *result << dendl; | |
269 | ||
270 | if (*result == 0) { | |
271 | bufferlist::iterator it = m_out_bl.begin(); | |
272 | *result = cls_client::get_immutable_metadata_finish( | |
273 | &it, &m_image_ctx->object_prefix, &m_image_ctx->order); | |
274 | } | |
275 | if (*result < 0) { | |
276 | lderr(cct) << "failed to retreive immutable metadata: " | |
277 | << cpp_strerror(*result) << dendl; | |
278 | send_close_image(*result); | |
279 | } else { | |
280 | send_v2_get_stripe_unit_count(); | |
281 | } | |
282 | ||
283 | return nullptr; | |
284 | } | |
285 | ||
286 | template <typename I> | |
287 | void OpenRequest<I>::send_v2_get_stripe_unit_count() { | |
288 | CephContext *cct = m_image_ctx->cct; | |
289 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
290 | ||
291 | librados::ObjectReadOperation op; | |
292 | cls_client::get_stripe_unit_count_start(&op); | |
293 | ||
294 | using klass = OpenRequest<I>; | |
295 | librados::AioCompletion *comp = create_rados_callback< | |
296 | klass, &klass::handle_v2_get_stripe_unit_count>(this); | |
297 | m_out_bl.clear(); | |
298 | m_image_ctx->md_ctx.aio_operate(m_image_ctx->header_oid, comp, &op, | |
299 | &m_out_bl); | |
300 | comp->release(); | |
301 | } | |
302 | ||
303 | template <typename I> | |
304 | Context *OpenRequest<I>::handle_v2_get_stripe_unit_count(int *result) { | |
305 | CephContext *cct = m_image_ctx->cct; | |
306 | ldout(cct, 10) << __func__ << ": r=" << *result << dendl; | |
307 | ||
308 | if (*result == 0) { | |
309 | bufferlist::iterator it = m_out_bl.begin(); | |
310 | *result = cls_client::get_stripe_unit_count_finish( | |
311 | &it, &m_image_ctx->stripe_unit, &m_image_ctx->stripe_count); | |
312 | } | |
313 | ||
314 | if (*result == -ENOEXEC || *result == -EINVAL) { | |
315 | *result = 0; | |
316 | } | |
317 | ||
318 | if (*result < 0) { | |
319 | lderr(cct) << "failed to read striping metadata: " << cpp_strerror(*result) | |
320 | << dendl; | |
321 | send_close_image(*result); | |
322 | return nullptr; | |
323 | } | |
324 | ||
31f18b77 FG |
325 | send_v2_get_create_timestamp(); |
326 | return nullptr; | |
327 | } | |
328 | ||
329 | template <typename I> | |
330 | void OpenRequest<I>::send_v2_get_create_timestamp() { | |
331 | CephContext *cct = m_image_ctx->cct; | |
332 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
333 | ||
334 | librados::ObjectReadOperation op; | |
335 | cls_client::get_create_timestamp_start(&op); | |
336 | ||
337 | using klass = OpenRequest<I>; | |
338 | librados::AioCompletion *comp = create_rados_callback< | |
339 | klass, &klass::handle_v2_get_create_timestamp>(this); | |
340 | m_out_bl.clear(); | |
341 | m_image_ctx->md_ctx.aio_operate(m_image_ctx->header_oid, comp, &op, | |
342 | &m_out_bl); | |
343 | comp->release(); | |
344 | } | |
345 | ||
346 | template <typename I> | |
347 | Context *OpenRequest<I>::handle_v2_get_create_timestamp(int *result) { | |
348 | CephContext *cct = m_image_ctx->cct; | |
349 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
350 | ||
351 | if (*result == 0) { | |
352 | bufferlist::iterator it = m_out_bl.begin(); | |
353 | *result = cls_client::get_create_timestamp_finish(&it, | |
354 | &m_image_ctx->create_timestamp); | |
355 | } | |
356 | if (*result < 0 && *result != -EOPNOTSUPP) { | |
357 | lderr(cct) << "failed to retrieve create_timestamp: " | |
358 | << cpp_strerror(*result) | |
359 | << dendl; | |
360 | send_close_image(*result); | |
361 | return nullptr; | |
362 | } | |
363 | ||
7c673cae FG |
364 | send_v2_get_data_pool(); |
365 | return nullptr; | |
366 | } | |
367 | ||
368 | template <typename I> | |
369 | void OpenRequest<I>::send_v2_get_data_pool() { | |
370 | CephContext *cct = m_image_ctx->cct; | |
371 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
372 | ||
373 | librados::ObjectReadOperation op; | |
374 | cls_client::get_data_pool_start(&op); | |
375 | ||
376 | using klass = OpenRequest<I>; | |
377 | librados::AioCompletion *comp = create_rados_callback< | |
378 | klass, &klass::handle_v2_get_data_pool>(this); | |
379 | m_out_bl.clear(); | |
380 | m_image_ctx->md_ctx.aio_operate(m_image_ctx->header_oid, comp, &op, | |
381 | &m_out_bl); | |
382 | comp->release(); | |
383 | } | |
384 | ||
385 | template <typename I> | |
386 | Context *OpenRequest<I>::handle_v2_get_data_pool(int *result) { | |
387 | CephContext *cct = m_image_ctx->cct; | |
388 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
389 | ||
390 | int64_t data_pool_id = -1; | |
391 | if (*result == 0) { | |
392 | bufferlist::iterator it = m_out_bl.begin(); | |
393 | *result = cls_client::get_data_pool_finish(&it, &data_pool_id); | |
394 | } else if (*result == -EOPNOTSUPP) { | |
395 | *result = 0; | |
396 | } | |
397 | ||
398 | if (*result < 0) { | |
399 | lderr(cct) << "failed to read data pool: " << cpp_strerror(*result) | |
400 | << dendl; | |
401 | send_close_image(*result); | |
402 | return nullptr; | |
403 | } | |
404 | ||
405 | if (data_pool_id != -1) { | |
406 | librados::Rados rados(m_image_ctx->md_ctx); | |
407 | *result = rados.ioctx_create2(data_pool_id, m_image_ctx->data_ctx); | |
408 | if (*result < 0) { | |
409 | lderr(cct) << "failed to initialize data pool IO context: " | |
410 | << cpp_strerror(*result) << dendl; | |
411 | send_close_image(*result); | |
412 | return nullptr; | |
413 | } | |
414 | } | |
415 | ||
416 | m_image_ctx->init_layout(); | |
417 | send_v2_apply_metadata(); | |
418 | return nullptr; | |
419 | } | |
420 | ||
421 | template <typename I> | |
422 | void OpenRequest<I>::send_v2_apply_metadata() { | |
423 | CephContext *cct = m_image_ctx->cct; | |
424 | ldout(cct, 10) << this << " " << __func__ << ": " | |
425 | << "start_key=" << m_last_metadata_key << dendl; | |
426 | ||
427 | librados::ObjectReadOperation op; | |
428 | cls_client::metadata_list_start(&op, m_last_metadata_key, MAX_METADATA_ITEMS); | |
429 | ||
430 | using klass = OpenRequest<I>; | |
431 | librados::AioCompletion *comp = | |
432 | create_rados_callback<klass, &klass::handle_v2_apply_metadata>(this); | |
433 | m_out_bl.clear(); | |
434 | m_image_ctx->md_ctx.aio_operate(m_image_ctx->header_oid, comp, &op, | |
435 | &m_out_bl); | |
436 | comp->release(); | |
437 | } | |
438 | ||
439 | template <typename I> | |
440 | Context *OpenRequest<I>::handle_v2_apply_metadata(int *result) { | |
441 | CephContext *cct = m_image_ctx->cct; | |
442 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
443 | ||
444 | std::map<std::string, bufferlist> metadata; | |
445 | if (*result == 0) { | |
446 | bufferlist::iterator it = m_out_bl.begin(); | |
447 | *result = cls_client::metadata_list_finish(&it, &metadata); | |
448 | } | |
449 | ||
450 | if (*result == -EOPNOTSUPP || *result == -EIO) { | |
451 | ldout(cct, 10) << "config metadata not supported by OSD" << dendl; | |
452 | } else if (*result < 0) { | |
453 | lderr(cct) << "failed to retrieve metadata: " << cpp_strerror(*result) | |
454 | << dendl; | |
455 | send_close_image(*result); | |
456 | return nullptr; | |
457 | } | |
458 | ||
459 | if (!metadata.empty()) { | |
460 | m_metadata.insert(metadata.begin(), metadata.end()); | |
461 | m_last_metadata_key = metadata.rbegin()->first; | |
462 | if (boost::starts_with(m_last_metadata_key, | |
463 | ImageCtx::METADATA_CONF_PREFIX)) { | |
464 | send_v2_apply_metadata(); | |
465 | return nullptr; | |
466 | } | |
467 | } | |
468 | ||
469 | m_image_ctx->apply_metadata(m_metadata); | |
470 | ||
471 | send_register_watch(); | |
472 | return nullptr; | |
473 | } | |
474 | ||
475 | template <typename I> | |
476 | void OpenRequest<I>::send_register_watch() { | |
477 | m_image_ctx->init(); | |
478 | ||
479 | if (m_image_ctx->read_only) { | |
480 | send_refresh(); | |
481 | return; | |
482 | } | |
483 | ||
484 | CephContext *cct = m_image_ctx->cct; | |
485 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
486 | ||
487 | using klass = OpenRequest<I>; | |
488 | Context *ctx = create_context_callback< | |
489 | klass, &klass::handle_register_watch>(this); | |
490 | m_image_ctx->register_watch(ctx); | |
491 | } | |
492 | ||
493 | template <typename I> | |
494 | Context *OpenRequest<I>::handle_register_watch(int *result) { | |
495 | CephContext *cct = m_image_ctx->cct; | |
496 | ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl; | |
497 | ||
498 | if (*result < 0) { | |
499 | lderr(cct) << "failed to register watch: " << cpp_strerror(*result) | |
500 | << dendl; | |
501 | send_close_image(*result); | |
502 | } else { | |
503 | send_refresh(); | |
504 | } | |
505 | return nullptr; | |
506 | } | |
507 | ||
508 | template <typename I> | |
509 | void OpenRequest<I>::send_refresh() { | |
510 | CephContext *cct = m_image_ctx->cct; | |
511 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
512 | ||
513 | using klass = OpenRequest<I>; | |
514 | RefreshRequest<I> *req = RefreshRequest<I>::create( | |
515 | *m_image_ctx, false, m_skip_open_parent_image, | |
516 | create_context_callback<klass, &klass::handle_refresh>(this)); | |
517 | req->send(); | |
518 | } | |
519 | ||
520 | template <typename I> | |
521 | Context *OpenRequest<I>::handle_refresh(int *result) { | |
522 | CephContext *cct = m_image_ctx->cct; | |
523 | ldout(cct, 10) << __func__ << ": r=" << *result << dendl; | |
524 | ||
525 | if (*result < 0) { | |
526 | lderr(cct) << "failed to refresh image: " << cpp_strerror(*result) | |
527 | << dendl; | |
528 | send_close_image(*result); | |
529 | return nullptr; | |
530 | } else { | |
531 | return send_set_snap(result); | |
532 | } | |
533 | } | |
534 | ||
535 | template <typename I> | |
536 | Context *OpenRequest<I>::send_set_snap(int *result) { | |
537 | if (m_image_ctx->snap_name.empty()) { | |
538 | *result = 0; | |
539 | return m_on_finish; | |
540 | } | |
541 | ||
542 | CephContext *cct = m_image_ctx->cct; | |
543 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
544 | ||
545 | using klass = OpenRequest<I>; | |
546 | SetSnapRequest<I> *req = SetSnapRequest<I>::create( | |
547 | *m_image_ctx, m_image_ctx->snap_namespace, m_image_ctx->snap_name, | |
548 | create_context_callback<klass, &klass::handle_set_snap>(this)); | |
549 | req->send(); | |
550 | return nullptr; | |
551 | } | |
552 | ||
553 | template <typename I> | |
554 | Context *OpenRequest<I>::handle_set_snap(int *result) { | |
555 | CephContext *cct = m_image_ctx->cct; | |
556 | ldout(cct, 10) << __func__ << ": r=" << *result << dendl; | |
557 | ||
558 | if (*result < 0) { | |
559 | lderr(cct) << "failed to set image snapshot: " << cpp_strerror(*result) | |
560 | << dendl; | |
561 | send_close_image(*result); | |
562 | return nullptr; | |
563 | } | |
564 | ||
565 | return m_on_finish; | |
566 | } | |
567 | ||
568 | template <typename I> | |
569 | void OpenRequest<I>::send_close_image(int error_result) { | |
570 | CephContext *cct = m_image_ctx->cct; | |
571 | ldout(cct, 10) << this << " " << __func__ << dendl; | |
572 | ||
573 | m_error_result = error_result; | |
574 | ||
575 | using klass = OpenRequest<I>; | |
576 | Context *ctx = create_context_callback<klass, &klass::handle_close_image>( | |
577 | this); | |
578 | CloseRequest<I> *req = CloseRequest<I>::create(m_image_ctx, ctx); | |
579 | req->send(); | |
580 | } | |
581 | ||
582 | template <typename I> | |
583 | Context *OpenRequest<I>::handle_close_image(int *result) { | |
584 | CephContext *cct = m_image_ctx->cct; | |
585 | ldout(cct, 10) << __func__ << ": r=" << *result << dendl; | |
586 | ||
587 | if (*result < 0) { | |
588 | lderr(cct) << "failed to close image: " << cpp_strerror(*result) << dendl; | |
589 | } | |
590 | if (m_error_result < 0) { | |
591 | *result = m_error_result; | |
592 | } | |
593 | return m_on_finish; | |
594 | } | |
595 | ||
596 | } // namespace image | |
597 | } // namespace librbd | |
598 | ||
599 | template class librbd::image::OpenRequest<librbd::ImageCtx>; |