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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 "librbd/api/Mirror.h" | |
5 | #include "include/rados/librados.hpp" | |
11fdf7f2 TL |
6 | #include "include/stringify.h" |
7 | #include "common/ceph_json.h" | |
7c673cae FG |
8 | #include "common/dout.h" |
9 | #include "common/errno.h" | |
10 | #include "cls/rbd/cls_rbd_client.h" | |
f67539c2 | 11 | #include "librbd/AsioEngine.h" |
7c673cae FG |
12 | #include "librbd/ImageCtx.h" |
13 | #include "librbd/ImageState.h" | |
14 | #include "librbd/Journal.h" | |
9f95a23c TL |
15 | #include "librbd/MirroringWatcher.h" |
16 | #include "librbd/Operations.h" | |
7c673cae FG |
17 | #include "librbd/Utils.h" |
18 | #include "librbd/api/Image.h" | |
9f95a23c | 19 | #include "librbd/api/Namespace.h" |
7c673cae FG |
20 | #include "librbd/mirror/DemoteRequest.h" |
21 | #include "librbd/mirror/DisableRequest.h" | |
22 | #include "librbd/mirror/EnableRequest.h" | |
23 | #include "librbd/mirror/GetInfoRequest.h" | |
24 | #include "librbd/mirror/GetStatusRequest.h" | |
9f95a23c | 25 | #include "librbd/mirror/GetUuidRequest.h" |
7c673cae FG |
26 | #include "librbd/mirror/PromoteRequest.h" |
27 | #include "librbd/mirror/Types.h" | |
28 | #include "librbd/MirroringWatcher.h" | |
9f95a23c TL |
29 | #include "librbd/mirror/snapshot/CreatePrimaryRequest.h" |
30 | #include "librbd/mirror/snapshot/ImageMeta.h" | |
31 | #include "librbd/mirror/snapshot/UnlinkPeerRequest.h" | |
32 | #include "librbd/mirror/snapshot/Utils.h" | |
eafe8130 TL |
33 | #include <boost/algorithm/string/trim.hpp> |
34 | #include <boost/algorithm/string/replace.hpp> | |
7c673cae | 35 | #include <boost/scope_exit.hpp> |
9f95a23c TL |
36 | #include "json_spirit/json_spirit.h" |
37 | ||
38 | #include <algorithm> | |
7c673cae FG |
39 | |
40 | #define dout_subsys ceph_subsys_rbd | |
41 | #undef dout_prefix | |
42 | #define dout_prefix *_dout << "librbd::api::Mirror: " << __func__ << ": " | |
43 | ||
44 | namespace librbd { | |
45 | namespace api { | |
46 | ||
47 | namespace { | |
48 | ||
eafe8130 TL |
49 | int get_config_key(librados::Rados& rados, const std::string& key, |
50 | std::string* value) { | |
51 | std::string cmd = | |
52 | "{" | |
53 | "\"prefix\": \"config-key get\", " | |
54 | "\"key\": \"" + key + "\"" | |
55 | "}"; | |
56 | ||
57 | bufferlist in_bl; | |
58 | bufferlist out_bl; | |
59 | ||
60 | int r = rados.mon_command(cmd, in_bl, &out_bl, nullptr); | |
61 | if (r == -EINVAL) { | |
62 | return -EOPNOTSUPP; | |
63 | } else if (r < 0 && r != -ENOENT) { | |
64 | return r; | |
65 | } | |
66 | ||
67 | *value = out_bl.to_str(); | |
68 | return 0; | |
69 | } | |
70 | ||
71 | int set_config_key(librados::Rados& rados, const std::string& key, | |
72 | const std::string& value) { | |
73 | std::string cmd; | |
74 | if (value.empty()) { | |
75 | cmd = "{" | |
76 | "\"prefix\": \"config-key rm\", " | |
77 | "\"key\": \"" + key + "\"" | |
78 | "}"; | |
79 | } else { | |
80 | cmd = "{" | |
81 | "\"prefix\": \"config-key set\", " | |
82 | "\"key\": \"" + key + "\", " | |
83 | "\"val\": \"" + value + "\"" | |
84 | "}"; | |
85 | } | |
86 | bufferlist in_bl; | |
87 | bufferlist out_bl; | |
88 | ||
89 | int r = rados.mon_command(cmd, in_bl, &out_bl, nullptr); | |
90 | if (r == -EINVAL) { | |
91 | return -EOPNOTSUPP; | |
92 | } else if (r < 0) { | |
93 | return r; | |
94 | } | |
95 | ||
96 | return 0; | |
97 | } | |
98 | ||
11fdf7f2 TL |
99 | std::string get_peer_config_key_name(int64_t pool_id, |
100 | const std::string& peer_uuid) { | |
101 | return RBD_MIRROR_PEER_CONFIG_KEY_PREFIX + stringify(pool_id) + "/" + | |
102 | peer_uuid; | |
103 | } | |
104 | ||
105 | int remove_peer_config_key(librados::IoCtx& io_ctx, | |
106 | const std::string& peer_uuid) { | |
107 | int64_t pool_id = io_ctx.get_id(); | |
eafe8130 TL |
108 | auto key = get_peer_config_key_name(pool_id, peer_uuid); |
109 | ||
110 | librados::Rados rados(io_ctx); | |
111 | int r = set_config_key(rados, key, ""); | |
112 | if (r < 0 && r != -ENOENT && r != -EPERM) { | |
113 | return r; | |
114 | } | |
115 | return 0; | |
116 | } | |
117 | ||
118 | int create_bootstrap_user(CephContext* cct, librados::Rados& rados, | |
119 | std::string* peer_client_id, std::string* cephx_key) { | |
120 | ldout(cct, 20) << dendl; | |
121 | ||
122 | // retrieve peer CephX user from config-key | |
123 | int r = get_config_key(rados, RBD_MIRROR_PEER_CLIENT_ID_CONFIG_KEY, | |
124 | peer_client_id); | |
125 | if (r == -EACCES) { | |
126 | ldout(cct, 5) << "insufficient permissions to get peer-client-id " | |
127 | << "config-key" << dendl; | |
128 | return r; | |
129 | } else if (r < 0 && r != -ENOENT) { | |
130 | lderr(cct) << "failed to retrieve peer client id key: " | |
131 | << cpp_strerror(r) << dendl; | |
132 | return r; | |
133 | } else if (r == -ENOENT || peer_client_id->empty()) { | |
134 | ldout(cct, 20) << "creating new peer-client-id config-key" << dendl; | |
135 | ||
136 | *peer_client_id = "rbd-mirror-peer"; | |
137 | r = set_config_key(rados, RBD_MIRROR_PEER_CLIENT_ID_CONFIG_KEY, | |
138 | *peer_client_id); | |
139 | if (r == -EACCES) { | |
140 | ldout(cct, 5) << "insufficient permissions to update peer-client-id " | |
141 | << "config-key" << dendl; | |
142 | return r; | |
143 | } else if (r < 0) { | |
144 | lderr(cct) << "failed to update peer client id key: " | |
145 | << cpp_strerror(r) << dendl; | |
146 | return r; | |
147 | } | |
148 | } | |
149 | ldout(cct, 20) << "peer_client_id=" << *peer_client_id << dendl; | |
150 | ||
151 | // create peer client user | |
11fdf7f2 | 152 | std::string cmd = |
eafe8130 TL |
153 | R"({)" \ |
154 | R"( "prefix": "auth get-or-create",)" \ | |
155 | R"( "entity": "client.)" + *peer_client_id + R"(",)" \ | |
156 | R"( "caps": [)" \ | |
157 | R"( "mon", "profile rbd-mirror-peer",)" \ | |
158 | R"( "osd", "profile rbd"],)" \ | |
159 | R"( "format": "json")" \ | |
160 | R"(})"; | |
11fdf7f2 TL |
161 | |
162 | bufferlist in_bl; | |
163 | bufferlist out_bl; | |
eafe8130 TL |
164 | |
165 | r = rados.mon_command(cmd, in_bl, &out_bl, nullptr); | |
166 | if (r == -EINVAL) { | |
167 | ldout(cct, 5) << "caps mismatch for existing user" << dendl; | |
168 | return -EEXIST; | |
169 | } else if (r == -EACCES) { | |
170 | ldout(cct, 5) << "insufficient permissions to create user" << dendl; | |
171 | return r; | |
172 | } else if (r < 0) { | |
173 | lderr(cct) << "failed to create or update RBD mirroring bootstrap user: " | |
174 | << cpp_strerror(r) << dendl; | |
11fdf7f2 TL |
175 | return r; |
176 | } | |
eafe8130 TL |
177 | |
178 | // extract key from response | |
179 | bool json_valid = false; | |
180 | json_spirit::mValue json_root; | |
181 | if(json_spirit::read(out_bl.to_str(), json_root)) { | |
182 | try { | |
183 | auto& json_obj = json_root.get_array()[0].get_obj(); | |
184 | *cephx_key = json_obj["key"].get_str(); | |
185 | json_valid = true; | |
186 | } catch (std::runtime_error&) { | |
187 | } | |
188 | } | |
189 | ||
190 | if (!json_valid) { | |
191 | lderr(cct) << "invalid auth keyring JSON received" << dendl; | |
192 | return -EBADMSG; | |
193 | } | |
194 | ||
195 | return 0; | |
196 | } | |
197 | ||
198 | int create_bootstrap_peer(CephContext* cct, librados::IoCtx& io_ctx, | |
9f95a23c | 199 | mirror_peer_direction_t direction, |
eafe8130 TL |
200 | const std::string& site_name, const std::string& fsid, |
201 | const std::string& client_id, const std::string& key, | |
202 | const std::string& mon_host, | |
203 | const std::string& cluster1, | |
204 | const std::string& cluster2) { | |
205 | ldout(cct, 20) << dendl; | |
206 | ||
207 | std::string peer_uuid; | |
9f95a23c TL |
208 | std::vector<mirror_peer_site_t> peers; |
209 | int r = Mirror<>::peer_site_list(io_ctx, &peers); | |
eafe8130 TL |
210 | if (r < 0 && r != -ENOENT) { |
211 | lderr(cct) << "failed to list mirror peers: " << cpp_strerror(r) << dendl; | |
212 | return r; | |
213 | } | |
214 | ||
215 | if (peers.empty()) { | |
9f95a23c TL |
216 | r = Mirror<>::peer_site_add(io_ctx, &peer_uuid, direction, site_name, |
217 | "client." + client_id); | |
eafe8130 TL |
218 | if (r < 0) { |
219 | lderr(cct) << "failed to add " << cluster1 << " peer to " | |
220 | << cluster2 << " " << "cluster: " << cpp_strerror(r) << dendl; | |
221 | return r; | |
222 | } | |
9f95a23c TL |
223 | } else if (peers[0].site_name != site_name && |
224 | peers[0].site_name != fsid) { | |
eafe8130 TL |
225 | // only support a single peer |
226 | lderr(cct) << "multiple peers are not currently supported" << dendl; | |
227 | return -EINVAL; | |
228 | } else { | |
229 | peer_uuid = peers[0].uuid; | |
230 | ||
9f95a23c TL |
231 | if (peers[0].site_name != site_name) { |
232 | r = Mirror<>::peer_site_set_name(io_ctx, peer_uuid, site_name); | |
eafe8130 TL |
233 | if (r < 0) { |
234 | // non-fatal attempt to update site name | |
235 | lderr(cct) << "failed to update peer site name" << dendl; | |
236 | } | |
237 | } | |
238 | } | |
239 | ||
240 | Mirror<>::Attributes attributes { | |
241 | {"mon_host", mon_host}, | |
242 | {"key", key}}; | |
9f95a23c | 243 | r = Mirror<>::peer_site_set_attributes(io_ctx, peer_uuid, attributes); |
eafe8130 TL |
244 | if (r < 0) { |
245 | lderr(cct) << "failed to update " << cluster1 << " cluster connection " | |
246 | << "attributes in " << cluster2 << " cluster: " | |
247 | << cpp_strerror(r) << dendl; | |
248 | return r; | |
249 | } | |
250 | ||
11fdf7f2 TL |
251 | return 0; |
252 | } | |
253 | ||
7c673cae FG |
254 | int list_mirror_images(librados::IoCtx& io_ctx, |
255 | std::set<std::string>& mirror_image_ids) { | |
256 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
257 | ||
258 | std::string last_read = ""; | |
259 | int max_read = 1024; | |
260 | int r; | |
261 | do { | |
262 | std::map<std::string, std::string> mirror_images; | |
263 | r = cls_client::mirror_image_list(&io_ctx, last_read, max_read, | |
264 | &mirror_images); | |
3efd9988 | 265 | if (r < 0 && r != -ENOENT) { |
7c673cae FG |
266 | lderr(cct) << "error listing mirrored image directory: " |
267 | << cpp_strerror(r) << dendl; | |
268 | return r; | |
269 | } | |
270 | for (auto it = mirror_images.begin(); it != mirror_images.end(); ++it) { | |
271 | mirror_image_ids.insert(it->first); | |
272 | } | |
273 | if (!mirror_images.empty()) { | |
274 | last_read = mirror_images.rbegin()->first; | |
275 | } | |
276 | r = mirror_images.size(); | |
277 | } while (r == max_read); | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
282 | struct C_ImageGetInfo : public Context { | |
283 | mirror_image_info_t *mirror_image_info; | |
9f95a23c | 284 | mirror_image_mode_t *mirror_image_mode; |
7c673cae FG |
285 | Context *on_finish; |
286 | ||
287 | cls::rbd::MirrorImage mirror_image; | |
11fdf7f2 | 288 | mirror::PromotionState promotion_state = mirror::PROMOTION_STATE_PRIMARY; |
9f95a23c | 289 | std::string primary_mirror_uuid; |
7c673cae | 290 | |
9f95a23c TL |
291 | C_ImageGetInfo(mirror_image_info_t *mirror_image_info, |
292 | mirror_image_mode_t *mirror_image_mode, Context *on_finish) | |
293 | : mirror_image_info(mirror_image_info), | |
294 | mirror_image_mode(mirror_image_mode), on_finish(on_finish) { | |
7c673cae FG |
295 | } |
296 | ||
297 | void finish(int r) override { | |
9f95a23c | 298 | if (r < 0 && r != -ENOENT) { |
7c673cae FG |
299 | on_finish->complete(r); |
300 | return; | |
301 | } | |
302 | ||
9f95a23c TL |
303 | if (mirror_image_info != nullptr) { |
304 | mirror_image_info->global_id = mirror_image.global_image_id; | |
305 | mirror_image_info->state = static_cast<rbd_mirror_image_state_t>( | |
306 | mirror_image.state); | |
307 | mirror_image_info->primary = ( | |
308 | promotion_state == mirror::PROMOTION_STATE_PRIMARY); | |
309 | } | |
310 | ||
311 | if (mirror_image_mode != nullptr) { | |
312 | *mirror_image_mode = | |
313 | static_cast<rbd_mirror_image_mode_t>(mirror_image.mode); | |
314 | } | |
315 | ||
7c673cae FG |
316 | on_finish->complete(0); |
317 | } | |
318 | }; | |
319 | ||
9f95a23c | 320 | struct C_ImageGetGlobalStatus : public C_ImageGetInfo { |
7c673cae | 321 | std::string image_name; |
9f95a23c | 322 | mirror_image_global_status_t *mirror_image_global_status; |
7c673cae FG |
323 | |
324 | cls::rbd::MirrorImageStatus mirror_image_status_internal; | |
325 | ||
9f95a23c TL |
326 | C_ImageGetGlobalStatus( |
327 | const std::string &image_name, | |
328 | mirror_image_global_status_t *mirror_image_global_status, | |
329 | Context *on_finish) | |
330 | : C_ImageGetInfo(&mirror_image_global_status->info, nullptr, on_finish), | |
331 | image_name(image_name), | |
332 | mirror_image_global_status(mirror_image_global_status) { | |
7c673cae FG |
333 | } |
334 | ||
335 | void finish(int r) override { | |
9f95a23c | 336 | if (r < 0 && r != -ENOENT) { |
7c673cae FG |
337 | on_finish->complete(r); |
338 | return; | |
339 | } | |
340 | ||
9f95a23c TL |
341 | mirror_image_global_status->name = image_name; |
342 | mirror_image_global_status->site_statuses.clear(); | |
343 | mirror_image_global_status->site_statuses.reserve( | |
344 | mirror_image_status_internal.mirror_image_site_statuses.size()); | |
345 | for (auto& site_status : | |
346 | mirror_image_status_internal.mirror_image_site_statuses) { | |
347 | mirror_image_global_status->site_statuses.push_back({ | |
348 | site_status.mirror_uuid, | |
349 | static_cast<mirror_image_status_state_t>(site_status.state), | |
350 | site_status.description, site_status.last_update.sec(), | |
351 | site_status.up}); | |
352 | } | |
7c673cae FG |
353 | C_ImageGetInfo::finish(0); |
354 | } | |
355 | }; | |
356 | ||
cd265ab1 TL |
357 | template <typename I> |
358 | struct C_ImageSnapshotCreate : public Context { | |
359 | I *ictx; | |
f67539c2 | 360 | uint64_t snap_create_flags; |
cd265ab1 TL |
361 | uint64_t *snap_id; |
362 | Context *on_finish; | |
363 | ||
364 | cls::rbd::MirrorImage mirror_image; | |
365 | mirror::PromotionState promotion_state; | |
366 | std::string primary_mirror_uuid; | |
367 | ||
f67539c2 TL |
368 | C_ImageSnapshotCreate(I *ictx, uint64_t snap_create_flags, uint64_t *snap_id, |
369 | Context *on_finish) | |
370 | : ictx(ictx), snap_create_flags(snap_create_flags), snap_id(snap_id), | |
371 | on_finish(on_finish) { | |
cd265ab1 TL |
372 | } |
373 | ||
374 | void finish(int r) override { | |
375 | if (r < 0 && r != -ENOENT) { | |
376 | on_finish->complete(r); | |
377 | return; | |
378 | } | |
379 | ||
380 | if (mirror_image.mode != cls::rbd::MIRROR_IMAGE_MODE_SNAPSHOT || | |
381 | mirror_image.state != cls::rbd::MIRROR_IMAGE_STATE_ENABLED) { | |
382 | lderr(ictx->cct) << "snapshot based mirroring is not enabled" << dendl; | |
383 | on_finish->complete(-EINVAL); | |
384 | return; | |
385 | } | |
386 | ||
387 | auto req = mirror::snapshot::CreatePrimaryRequest<I>::create( | |
f67539c2 TL |
388 | ictx, mirror_image.global_image_id, CEPH_NOSNAP, snap_create_flags, 0U, |
389 | snap_id, on_finish); | |
cd265ab1 TL |
390 | req->send(); |
391 | } | |
392 | }; | |
393 | ||
7c673cae FG |
394 | } // anonymous namespace |
395 | ||
396 | template <typename I> | |
9f95a23c TL |
397 | int Mirror<I>::image_enable(I *ictx, mirror_image_mode_t mode, |
398 | bool relax_same_pool_parent_check) { | |
7c673cae | 399 | CephContext *cct = ictx->cct; |
9f95a23c TL |
400 | ldout(cct, 20) << "ictx=" << ictx << " mode=" << mode |
401 | << " relax_same_pool_parent_check=" | |
402 | << relax_same_pool_parent_check << dendl; | |
11fdf7f2 | 403 | |
7c673cae FG |
404 | int r = ictx->state->refresh_if_required(); |
405 | if (r < 0) { | |
406 | return r; | |
407 | } | |
408 | ||
409 | cls::rbd::MirrorMode mirror_mode; | |
410 | r = cls_client::mirror_mode_get(&ictx->md_ctx, &mirror_mode); | |
411 | if (r < 0) { | |
412 | lderr(cct) << "cannot enable mirroring: failed to retrieve mirror mode: " | |
413 | << cpp_strerror(r) << dendl; | |
414 | return r; | |
415 | } | |
416 | ||
417 | if (mirror_mode != cls::rbd::MIRROR_MODE_IMAGE) { | |
418 | lderr(cct) << "cannot enable mirroring in the current pool mirroring mode" | |
419 | << dendl; | |
420 | return -EINVAL; | |
421 | } | |
422 | ||
423 | // is mirroring not enabled for the parent? | |
424 | { | |
9f95a23c | 425 | std::shared_lock image_locker{ictx->image_lock}; |
7c673cae FG |
426 | ImageCtx *parent = ictx->parent; |
427 | if (parent) { | |
9f95a23c TL |
428 | if (parent->md_ctx.get_id() != ictx->md_ctx.get_id() || |
429 | !relax_same_pool_parent_check) { | |
7c673cae FG |
430 | cls::rbd::MirrorImage mirror_image_internal; |
431 | r = cls_client::mirror_image_get(&(parent->md_ctx), parent->id, | |
432 | &mirror_image_internal); | |
433 | if (r == -ENOENT) { | |
434 | lderr(cct) << "mirroring is not enabled for the parent" << dendl; | |
435 | return -EINVAL; | |
436 | } | |
437 | } | |
438 | } | |
439 | } | |
440 | ||
9f95a23c TL |
441 | if (mode == RBD_MIRROR_IMAGE_MODE_JOURNAL && |
442 | !ictx->test_features(RBD_FEATURE_JOURNALING)) { | |
443 | uint64_t features = RBD_FEATURE_JOURNALING; | |
444 | if (!ictx->test_features(RBD_FEATURE_EXCLUSIVE_LOCK)) { | |
445 | features |= RBD_FEATURE_EXCLUSIVE_LOCK; | |
446 | } | |
447 | r = ictx->operations->update_features(features, true); | |
448 | if (r < 0) { | |
449 | lderr(cct) << "cannot enable journaling: " << cpp_strerror(r) << dendl; | |
450 | return r; | |
451 | } | |
7c673cae FG |
452 | } |
453 | ||
454 | C_SaferCond ctx; | |
9f95a23c | 455 | auto req = mirror::EnableRequest<ImageCtx>::create( |
1911f103 | 456 | ictx, static_cast<cls::rbd::MirrorImageMode>(mode), "", false, &ctx); |
7c673cae FG |
457 | req->send(); |
458 | ||
459 | r = ctx.wait(); | |
460 | if (r < 0) { | |
461 | lderr(cct) << "cannot enable mirroring: " << cpp_strerror(r) << dendl; | |
462 | return r; | |
463 | } | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | template <typename I> | |
469 | int Mirror<I>::image_disable(I *ictx, bool force) { | |
470 | CephContext *cct = ictx->cct; | |
471 | ldout(cct, 20) << "ictx=" << ictx << dendl; | |
472 | ||
473 | int r = ictx->state->refresh_if_required(); | |
474 | if (r < 0) { | |
475 | return r; | |
476 | } | |
477 | ||
478 | cls::rbd::MirrorMode mirror_mode; | |
479 | r = cls_client::mirror_mode_get(&ictx->md_ctx, &mirror_mode); | |
480 | if (r < 0) { | |
481 | lderr(cct) << "cannot disable mirroring: failed to retrieve pool " | |
482 | "mirroring mode: " << cpp_strerror(r) << dendl; | |
483 | return r; | |
484 | } | |
485 | ||
486 | if (mirror_mode != cls::rbd::MIRROR_MODE_IMAGE) { | |
487 | lderr(cct) << "cannot disable mirroring in the current pool mirroring " | |
488 | "mode" << dendl; | |
489 | return -EINVAL; | |
490 | } | |
491 | ||
9f95a23c | 492 | // is mirroring enabled for the image? |
7c673cae FG |
493 | cls::rbd::MirrorImage mirror_image_internal; |
494 | r = cls_client::mirror_image_get(&ictx->md_ctx, ictx->id, | |
495 | &mirror_image_internal); | |
496 | if (r == -ENOENT) { | |
497 | // mirroring is not enabled for this image | |
498 | ldout(cct, 20) << "ignoring disable command: mirroring is not enabled for " | |
499 | << "this image" << dendl; | |
500 | return 0; | |
501 | } else if (r == -EOPNOTSUPP) { | |
502 | ldout(cct, 5) << "mirroring not supported by OSD" << dendl; | |
503 | return r; | |
504 | } else if (r < 0) { | |
505 | lderr(cct) << "failed to retrieve mirror image metadata: " | |
506 | << cpp_strerror(r) << dendl; | |
507 | return r; | |
508 | } | |
509 | ||
510 | mirror_image_internal.state = cls::rbd::MIRROR_IMAGE_STATE_DISABLING; | |
511 | r = cls_client::mirror_image_set(&ictx->md_ctx, ictx->id, | |
512 | mirror_image_internal); | |
513 | if (r < 0) { | |
514 | lderr(cct) << "cannot disable mirroring: " << cpp_strerror(r) << dendl; | |
515 | return r; | |
9f95a23c TL |
516 | } |
517 | ||
518 | bool rollback = false; | |
519 | BOOST_SCOPE_EXIT_ALL(ictx, &mirror_image_internal, &rollback) { | |
520 | if (rollback) { | |
521 | // restore the mask bit for treating the non-primary feature as read-only | |
522 | ictx->image_lock.lock(); | |
523 | ictx->read_only_mask |= IMAGE_READ_ONLY_FLAG_NON_PRIMARY; | |
524 | ictx->image_lock.unlock(); | |
525 | ||
526 | ictx->state->handle_update_notification(); | |
527 | ||
528 | // attempt to restore the image state | |
529 | CephContext *cct = ictx->cct; | |
530 | mirror_image_internal.state = cls::rbd::MIRROR_IMAGE_STATE_ENABLED; | |
531 | int r = cls_client::mirror_image_set(&ictx->md_ctx, ictx->id, | |
532 | mirror_image_internal); | |
533 | if (r < 0) { | |
534 | lderr(cct) << "failed to re-enable image mirroring: " | |
535 | << cpp_strerror(r) << dendl; | |
7c673cae | 536 | } |
9f95a23c TL |
537 | } |
538 | }; | |
539 | ||
540 | std::unique_lock image_locker{ictx->image_lock}; | |
541 | map<librados::snap_t, SnapInfo> snap_info = ictx->snap_info; | |
542 | for (auto &info : snap_info) { | |
543 | cls::rbd::ParentImageSpec parent_spec{ictx->md_ctx.get_id(), | |
544 | ictx->md_ctx.get_namespace(), | |
545 | ictx->id, info.first}; | |
546 | std::vector<librbd::linked_image_spec_t> child_images; | |
547 | r = Image<I>::list_children(ictx, parent_spec, &child_images); | |
548 | if (r < 0) { | |
549 | rollback = true; | |
550 | return r; | |
551 | } | |
552 | ||
553 | if (child_images.empty()) { | |
554 | continue; | |
555 | } | |
556 | ||
557 | librados::IoCtx child_io_ctx; | |
558 | int64_t child_pool_id = -1; | |
559 | for (auto &child_image : child_images){ | |
560 | std::string pool = child_image.pool_name; | |
561 | if (child_pool_id == -1 || | |
562 | child_pool_id != child_image.pool_id || | |
563 | child_io_ctx.get_namespace() != child_image.pool_namespace) { | |
564 | r = util::create_ioctx(ictx->md_ctx, "child image", | |
565 | child_image.pool_id, | |
566 | child_image.pool_namespace, | |
567 | &child_io_ctx); | |
7c673cae FG |
568 | if (r < 0) { |
569 | rollback = true; | |
570 | return r; | |
571 | } | |
11fdf7f2 | 572 | |
9f95a23c TL |
573 | child_pool_id = child_image.pool_id; |
574 | } | |
11fdf7f2 | 575 | |
9f95a23c TL |
576 | cls::rbd::MirrorImage child_mirror_image_internal; |
577 | r = cls_client::mirror_image_get(&child_io_ctx, child_image.image_id, | |
578 | &child_mirror_image_internal); | |
579 | if (r != -ENOENT) { | |
580 | rollback = true; | |
581 | lderr(cct) << "mirroring is enabled on one or more children " | |
582 | << dendl; | |
583 | return -EBUSY; | |
7c673cae FG |
584 | } |
585 | } | |
9f95a23c TL |
586 | } |
587 | image_locker.unlock(); | |
588 | ||
589 | if (mirror_image_internal.mode == cls::rbd::MIRROR_IMAGE_MODE_SNAPSHOT) { | |
590 | // don't let the non-primary feature bit prevent image updates | |
591 | ictx->image_lock.lock(); | |
592 | ictx->read_only_mask &= ~IMAGE_READ_ONLY_FLAG_NON_PRIMARY; | |
593 | ictx->image_lock.unlock(); | |
7c673cae | 594 | |
9f95a23c TL |
595 | r = ictx->state->refresh(); |
596 | if (r < 0) { | |
597 | rollback = true; | |
598 | return r; | |
599 | } | |
7c673cae | 600 | |
9f95a23c TL |
601 | // remove any snapshot-based mirroring image-meta from image |
602 | std::string mirror_uuid; | |
603 | r = uuid_get(ictx->md_ctx, &mirror_uuid); | |
7c673cae | 604 | if (r < 0) { |
7c673cae FG |
605 | rollback = true; |
606 | return r; | |
607 | } | |
9f95a23c TL |
608 | |
609 | r = ictx->operations->metadata_remove( | |
610 | mirror::snapshot::util::get_image_meta_key(mirror_uuid)); | |
611 | if (r < 0 && r != -ENOENT) { | |
612 | lderr(cct) << "cannot remove snapshot image-meta key: " << cpp_strerror(r) | |
613 | << dendl; | |
614 | rollback = true; | |
615 | return r; | |
616 | } | |
617 | } | |
618 | ||
619 | C_SaferCond ctx; | |
620 | auto req = mirror::DisableRequest<ImageCtx>::create(ictx, force, true, | |
621 | &ctx); | |
622 | req->send(); | |
623 | ||
624 | r = ctx.wait(); | |
625 | if (r < 0) { | |
626 | lderr(cct) << "cannot disable mirroring: " << cpp_strerror(r) << dendl; | |
627 | rollback = true; | |
628 | return r; | |
629 | } | |
630 | ||
631 | if (mirror_image_internal.mode == cls::rbd::MIRROR_IMAGE_MODE_JOURNAL) { | |
632 | r = ictx->operations->update_features(RBD_FEATURE_JOURNALING, false); | |
633 | if (r < 0) { | |
634 | lderr(cct) << "cannot disable journaling: " << cpp_strerror(r) << dendl; | |
635 | // not fatal | |
636 | } | |
7c673cae FG |
637 | } |
638 | ||
639 | return 0; | |
640 | } | |
641 | ||
642 | template <typename I> | |
643 | int Mirror<I>::image_promote(I *ictx, bool force) { | |
644 | CephContext *cct = ictx->cct; | |
645 | ||
646 | C_SaferCond ctx; | |
647 | Mirror<I>::image_promote(ictx, force, &ctx); | |
648 | int r = ctx.wait(); | |
649 | if (r < 0) { | |
650 | lderr(cct) << "failed to promote image" << dendl; | |
651 | return r; | |
652 | } | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | template <typename I> | |
658 | void Mirror<I>::image_promote(I *ictx, bool force, Context *on_finish) { | |
659 | CephContext *cct = ictx->cct; | |
660 | ldout(cct, 20) << "ictx=" << ictx << ", " | |
661 | << "force=" << force << dendl; | |
662 | ||
9f95a23c TL |
663 | // don't let the non-primary feature bit prevent image updates |
664 | ictx->image_lock.lock(); | |
665 | ictx->read_only_mask &= ~IMAGE_READ_ONLY_FLAG_NON_PRIMARY; | |
666 | ictx->image_lock.unlock(); | |
667 | ||
668 | auto on_promote = new LambdaContext([ictx, on_finish](int r) { | |
669 | ictx->image_lock.lock(); | |
670 | ictx->read_only_mask |= IMAGE_READ_ONLY_FLAG_NON_PRIMARY; | |
671 | ictx->image_lock.unlock(); | |
672 | ||
673 | ictx->state->handle_update_notification(); | |
674 | on_finish->complete(r); | |
675 | }); | |
676 | ||
677 | auto on_refresh = new LambdaContext([ictx, force, on_promote](int r) { | |
678 | if (r < 0) { | |
679 | lderr(ictx->cct) << "refresh failed: " << cpp_strerror(r) << dendl; | |
680 | on_promote->complete(r); | |
681 | return; | |
682 | } | |
683 | ||
684 | auto req = mirror::PromoteRequest<>::create(*ictx, force, on_promote); | |
685 | req->send(); | |
686 | }); | |
687 | ictx->state->refresh(on_refresh); | |
7c673cae FG |
688 | } |
689 | ||
690 | template <typename I> | |
691 | int Mirror<I>::image_demote(I *ictx) { | |
692 | CephContext *cct = ictx->cct; | |
693 | ||
694 | C_SaferCond ctx; | |
695 | Mirror<I>::image_demote(ictx, &ctx); | |
696 | int r = ctx.wait(); | |
697 | if (r < 0) { | |
698 | lderr(cct) << "failed to demote image" << dendl; | |
699 | return r; | |
700 | } | |
701 | ||
702 | return 0; | |
703 | } | |
704 | ||
705 | template <typename I> | |
706 | void Mirror<I>::image_demote(I *ictx, Context *on_finish) { | |
707 | CephContext *cct = ictx->cct; | |
708 | ldout(cct, 20) << "ictx=" << ictx << dendl; | |
709 | ||
1911f103 TL |
710 | auto on_cleanup = new LambdaContext([ictx, on_finish](int r) { |
711 | ictx->image_lock.lock(); | |
712 | ictx->read_only_mask |= IMAGE_READ_ONLY_FLAG_NON_PRIMARY; | |
713 | ictx->image_lock.unlock(); | |
714 | ||
715 | ictx->state->handle_update_notification(); | |
716 | ||
717 | on_finish->complete(r); | |
718 | }); | |
719 | auto on_refresh = new LambdaContext([ictx, on_cleanup](int r) { | |
9f95a23c TL |
720 | if (r < 0) { |
721 | lderr(ictx->cct) << "refresh failed: " << cpp_strerror(r) << dendl; | |
1911f103 | 722 | on_cleanup->complete(r); |
9f95a23c TL |
723 | return; |
724 | } | |
725 | ||
1911f103 | 726 | auto req = mirror::DemoteRequest<>::create(*ictx, on_cleanup); |
9f95a23c TL |
727 | req->send(); |
728 | }); | |
1911f103 TL |
729 | |
730 | // ensure we can create a snapshot after setting the non-primary | |
731 | // feature bit | |
732 | ictx->image_lock.lock(); | |
733 | ictx->read_only_mask &= ~IMAGE_READ_ONLY_FLAG_NON_PRIMARY; | |
734 | ictx->image_lock.unlock(); | |
735 | ||
736 | ictx->state->refresh(on_refresh); | |
7c673cae FG |
737 | } |
738 | ||
739 | template <typename I> | |
740 | int Mirror<I>::image_resync(I *ictx) { | |
741 | CephContext *cct = ictx->cct; | |
742 | ldout(cct, 20) << "ictx=" << ictx << dendl; | |
743 | ||
744 | int r = ictx->state->refresh_if_required(); | |
745 | if (r < 0) { | |
746 | return r; | |
747 | } | |
748 | ||
9f95a23c TL |
749 | cls::rbd::MirrorImage mirror_image; |
750 | mirror::PromotionState promotion_state; | |
751 | std::string primary_mirror_uuid; | |
752 | C_SaferCond get_info_ctx; | |
753 | auto req = mirror::GetInfoRequest<I>::create(*ictx, &mirror_image, | |
754 | &promotion_state, | |
755 | &primary_mirror_uuid, | |
756 | &get_info_ctx); | |
757 | req->send(); | |
758 | ||
759 | r = get_info_ctx.wait(); | |
7c673cae | 760 | if (r < 0) { |
7c673cae | 761 | return r; |
9f95a23c TL |
762 | } |
763 | ||
764 | if (promotion_state == mirror::PROMOTION_STATE_PRIMARY) { | |
7c673cae FG |
765 | lderr(cct) << "image is primary, cannot resync to itself" << dendl; |
766 | return -EINVAL; | |
767 | } | |
768 | ||
9f95a23c TL |
769 | if (mirror_image.mode == cls::rbd::MIRROR_IMAGE_MODE_JOURNAL) { |
770 | // flag the journal indicating that we want to rebuild the local image | |
771 | r = Journal<I>::request_resync(ictx); | |
772 | if (r < 0) { | |
773 | lderr(cct) << "failed to request resync: " << cpp_strerror(r) << dendl; | |
774 | return r; | |
775 | } | |
776 | } else if (mirror_image.mode == cls::rbd::MIRROR_IMAGE_MODE_SNAPSHOT) { | |
777 | std::string mirror_uuid; | |
778 | r = uuid_get(ictx->md_ctx, &mirror_uuid); | |
779 | if (r < 0) { | |
780 | return r; | |
781 | } | |
782 | ||
783 | mirror::snapshot::ImageMeta image_meta(ictx, mirror_uuid); | |
784 | ||
785 | C_SaferCond load_meta_ctx; | |
786 | image_meta.load(&load_meta_ctx); | |
787 | r = load_meta_ctx.wait(); | |
788 | if (r < 0 && r != -ENOENT) { | |
789 | lderr(cct) << "failed to load mirror image-meta: " << cpp_strerror(r) | |
790 | << dendl; | |
791 | return r; | |
792 | } | |
793 | ||
794 | image_meta.resync_requested = true; | |
795 | ||
796 | C_SaferCond save_meta_ctx; | |
797 | image_meta.save(&save_meta_ctx); | |
798 | r = save_meta_ctx.wait(); | |
799 | if (r < 0) { | |
800 | lderr(cct) << "failed to request resync: " << cpp_strerror(r) << dendl; | |
801 | return r; | |
802 | } | |
803 | } else { | |
804 | lderr(cct) << "unknown mirror mode" << dendl; | |
805 | return -EINVAL; | |
7c673cae FG |
806 | } |
807 | ||
808 | return 0; | |
809 | } | |
810 | ||
811 | template <typename I> | |
812 | void Mirror<I>::image_get_info(I *ictx, mirror_image_info_t *mirror_image_info, | |
11fdf7f2 | 813 | Context *on_finish) { |
7c673cae FG |
814 | CephContext *cct = ictx->cct; |
815 | ldout(cct, 20) << "ictx=" << ictx << dendl; | |
7c673cae | 816 | |
9f95a23c | 817 | auto on_refresh = new LambdaContext( |
92f5a8d4 TL |
818 | [ictx, mirror_image_info, on_finish](int r) { |
819 | if (r < 0) { | |
820 | lderr(ictx->cct) << "refresh failed: " << cpp_strerror(r) << dendl; | |
821 | on_finish->complete(r); | |
822 | return; | |
823 | } | |
824 | ||
9f95a23c | 825 | auto ctx = new C_ImageGetInfo(mirror_image_info, nullptr, on_finish); |
92f5a8d4 TL |
826 | auto req = mirror::GetInfoRequest<I>::create(*ictx, &ctx->mirror_image, |
827 | &ctx->promotion_state, | |
9f95a23c | 828 | &ctx->primary_mirror_uuid, |
92f5a8d4 TL |
829 | ctx); |
830 | req->send(); | |
831 | }); | |
832 | ||
833 | if (ictx->state->is_refresh_required()) { | |
834 | ictx->state->refresh(on_refresh); | |
835 | } else { | |
836 | on_refresh->complete(0); | |
837 | } | |
7c673cae FG |
838 | } |
839 | ||
840 | template <typename I> | |
11fdf7f2 | 841 | int Mirror<I>::image_get_info(I *ictx, mirror_image_info_t *mirror_image_info) { |
7c673cae | 842 | C_SaferCond ctx; |
11fdf7f2 | 843 | image_get_info(ictx, mirror_image_info, &ctx); |
7c673cae FG |
844 | |
845 | int r = ctx.wait(); | |
846 | if (r < 0) { | |
847 | return r; | |
848 | } | |
849 | return 0; | |
850 | } | |
851 | ||
852 | template <typename I> | |
9f95a23c | 853 | void Mirror<I>::image_get_info(librados::IoCtx& io_ctx, |
f67539c2 | 854 | asio::ContextWQ *op_work_queue, |
9f95a23c TL |
855 | const std::string &image_id, |
856 | mirror_image_info_t *mirror_image_info, | |
857 | Context *on_finish) { | |
858 | auto cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
859 | ldout(cct, 20) << "pool_id=" << io_ctx.get_id() << ", image_id=" << image_id | |
860 | << dendl; | |
861 | ||
862 | auto ctx = new C_ImageGetInfo(mirror_image_info, nullptr, on_finish); | |
863 | auto req = mirror::GetInfoRequest<I>::create(io_ctx, op_work_queue, image_id, | |
864 | &ctx->mirror_image, | |
865 | &ctx->promotion_state, | |
866 | &ctx->primary_mirror_uuid, ctx); | |
867 | req->send(); | |
868 | } | |
869 | ||
870 | template <typename I> | |
871 | int Mirror<I>::image_get_info(librados::IoCtx& io_ctx, | |
f67539c2 | 872 | asio::ContextWQ *op_work_queue, |
9f95a23c TL |
873 | const std::string &image_id, |
874 | mirror_image_info_t *mirror_image_info) { | |
875 | C_SaferCond ctx; | |
876 | image_get_info(io_ctx, op_work_queue, image_id, mirror_image_info, &ctx); | |
877 | ||
878 | int r = ctx.wait(); | |
879 | if (r < 0) { | |
880 | return r; | |
881 | } | |
882 | return 0; | |
883 | } | |
884 | ||
885 | template <typename I> | |
886 | void Mirror<I>::image_get_mode(I *ictx, mirror_image_mode_t *mode, | |
887 | Context *on_finish) { | |
7c673cae FG |
888 | CephContext *cct = ictx->cct; |
889 | ldout(cct, 20) << "ictx=" << ictx << dendl; | |
7c673cae | 890 | |
9f95a23c TL |
891 | auto ctx = new C_ImageGetInfo(nullptr, mode, on_finish); |
892 | auto req = mirror::GetInfoRequest<I>::create(*ictx, &ctx->mirror_image, | |
893 | &ctx->promotion_state, | |
894 | &ctx->primary_mirror_uuid, ctx); | |
895 | req->send(); | |
896 | } | |
897 | ||
898 | template <typename I> | |
899 | int Mirror<I>::image_get_mode(I *ictx, mirror_image_mode_t *mode) { | |
900 | C_SaferCond ctx; | |
901 | image_get_mode(ictx, mode, &ctx); | |
902 | ||
903 | int r = ctx.wait(); | |
904 | if (r < 0) { | |
905 | return r; | |
906 | } | |
907 | return 0; | |
908 | } | |
909 | ||
910 | template <typename I> | |
911 | void Mirror<I>::image_get_global_status(I *ictx, | |
912 | mirror_image_global_status_t *status, | |
913 | Context *on_finish) { | |
914 | CephContext *cct = ictx->cct; | |
915 | ldout(cct, 20) << "ictx=" << ictx << dendl; | |
916 | ||
917 | auto ctx = new C_ImageGetGlobalStatus(ictx->name, status, on_finish); | |
7c673cae FG |
918 | auto req = mirror::GetStatusRequest<I>::create( |
919 | *ictx, &ctx->mirror_image_status_internal, &ctx->mirror_image, | |
920 | &ctx->promotion_state, ctx); | |
921 | req->send(); | |
922 | } | |
923 | ||
924 | template <typename I> | |
9f95a23c TL |
925 | int Mirror<I>::image_get_global_status(I *ictx, |
926 | mirror_image_global_status_t *status) { | |
7c673cae | 927 | C_SaferCond ctx; |
9f95a23c | 928 | image_get_global_status(ictx, status, &ctx); |
7c673cae FG |
929 | |
930 | int r = ctx.wait(); | |
931 | if (r < 0) { | |
932 | return r; | |
933 | } | |
934 | return 0; | |
935 | } | |
936 | ||
11fdf7f2 TL |
937 | template <typename I> |
938 | int Mirror<I>::image_get_instance_id(I *ictx, std::string *instance_id) { | |
939 | CephContext *cct = ictx->cct; | |
940 | ldout(cct, 20) << "ictx=" << ictx << dendl; | |
941 | ||
942 | cls::rbd::MirrorImage mirror_image; | |
943 | int r = cls_client::mirror_image_get(&ictx->md_ctx, ictx->id, &mirror_image); | |
944 | if (r < 0 && r != -ENOENT) { | |
945 | lderr(cct) << "failed to retrieve mirroring state: " << cpp_strerror(r) | |
946 | << dendl; | |
947 | return r; | |
948 | } else if (mirror_image.state != cls::rbd::MIRROR_IMAGE_STATE_ENABLED) { | |
949 | lderr(cct) << "mirroring is not currently enabled" << dendl; | |
950 | return -EINVAL; | |
951 | } | |
952 | ||
953 | entity_inst_t instance; | |
954 | r = cls_client::mirror_image_instance_get(&ictx->md_ctx, | |
955 | mirror_image.global_image_id, | |
956 | &instance); | |
957 | if (r < 0) { | |
958 | if (r != -ENOENT && r != -ESTALE) { | |
959 | lderr(cct) << "failed to get mirror image instance: " << cpp_strerror(r) | |
960 | << dendl; | |
961 | } | |
962 | return r; | |
963 | } | |
964 | ||
965 | *instance_id = stringify(instance.name.num()); | |
966 | return 0; | |
967 | } | |
968 | ||
eafe8130 TL |
969 | template <typename I> |
970 | int Mirror<I>::site_name_get(librados::Rados& rados, std::string* name) { | |
971 | CephContext *cct = reinterpret_cast<CephContext *>(rados.cct()); | |
972 | ldout(cct, 20) << dendl; | |
973 | ||
974 | int r = get_config_key(rados, RBD_MIRROR_SITE_NAME_CONFIG_KEY, name); | |
975 | if (r == -EOPNOTSUPP) { | |
976 | return r; | |
977 | } else if (r == -ENOENT || name->empty()) { | |
978 | // default to the cluster fsid | |
979 | r = rados.cluster_fsid(name); | |
980 | if (r < 0) { | |
981 | lderr(cct) << "failed to retrieve cluster fsid: " << cpp_strerror(r) | |
982 | << dendl; | |
983 | } | |
984 | return r; | |
985 | } else if (r < 0) { | |
986 | lderr(cct) << "failed to retrieve site name: " << cpp_strerror(r) | |
987 | << dendl; | |
988 | return r; | |
989 | } | |
990 | ||
991 | return 0; | |
992 | } | |
993 | ||
994 | template <typename I> | |
995 | int Mirror<I>::site_name_set(librados::Rados& rados, const std::string& name) { | |
996 | CephContext *cct = reinterpret_cast<CephContext *>(rados.cct()); | |
997 | ||
998 | std::string site_name{name}; | |
999 | boost::algorithm::trim(site_name); | |
1000 | ldout(cct, 20) << "site_name=" << site_name << dendl; | |
1001 | ||
1002 | int r = set_config_key(rados, RBD_MIRROR_SITE_NAME_CONFIG_KEY, name); | |
1003 | if (r == -EOPNOTSUPP) { | |
1004 | return r; | |
1005 | } else if (r < 0 && r != -ENOENT) { | |
1006 | lderr(cct) << "failed to update site name: " << cpp_strerror(r) | |
1007 | << dendl; | |
1008 | return r; | |
1009 | } | |
1010 | ||
1011 | return 0; | |
1012 | } | |
1013 | ||
7c673cae FG |
1014 | template <typename I> |
1015 | int Mirror<I>::mode_get(librados::IoCtx& io_ctx, | |
1016 | rbd_mirror_mode_t *mirror_mode) { | |
1017 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
1018 | ldout(cct, 20) << dendl; | |
1019 | ||
1020 | cls::rbd::MirrorMode mirror_mode_internal; | |
1021 | int r = cls_client::mirror_mode_get(&io_ctx, &mirror_mode_internal); | |
1022 | if (r < 0) { | |
1023 | lderr(cct) << "failed to retrieve mirror mode: " << cpp_strerror(r) | |
1024 | << dendl; | |
1025 | return r; | |
1026 | } | |
1027 | ||
1028 | switch (mirror_mode_internal) { | |
1029 | case cls::rbd::MIRROR_MODE_DISABLED: | |
1030 | case cls::rbd::MIRROR_MODE_IMAGE: | |
1031 | case cls::rbd::MIRROR_MODE_POOL: | |
1032 | *mirror_mode = static_cast<rbd_mirror_mode_t>(mirror_mode_internal); | |
1033 | break; | |
1034 | default: | |
1035 | lderr(cct) << "unknown mirror mode (" | |
1036 | << static_cast<uint32_t>(mirror_mode_internal) << ")" | |
1037 | << dendl; | |
1038 | return -EINVAL; | |
1039 | } | |
1040 | return 0; | |
1041 | } | |
1042 | ||
1043 | template <typename I> | |
1044 | int Mirror<I>::mode_set(librados::IoCtx& io_ctx, | |
1045 | rbd_mirror_mode_t mirror_mode) { | |
1046 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
1047 | ldout(cct, 20) << dendl; | |
1048 | ||
1049 | cls::rbd::MirrorMode next_mirror_mode; | |
1050 | switch (mirror_mode) { | |
1051 | case RBD_MIRROR_MODE_DISABLED: | |
1052 | case RBD_MIRROR_MODE_IMAGE: | |
1053 | case RBD_MIRROR_MODE_POOL: | |
1054 | next_mirror_mode = static_cast<cls::rbd::MirrorMode>(mirror_mode); | |
1055 | break; | |
1056 | default: | |
1057 | lderr(cct) << "unknown mirror mode (" | |
1058 | << static_cast<uint32_t>(mirror_mode) << ")" << dendl; | |
1059 | return -EINVAL; | |
1060 | } | |
1061 | ||
1062 | int r; | |
1063 | if (next_mirror_mode == cls::rbd::MIRROR_MODE_DISABLED) { | |
1064 | // fail early if pool still has peers registered and attempting to disable | |
1065 | std::vector<cls::rbd::MirrorPeer> mirror_peers; | |
1066 | r = cls_client::mirror_peer_list(&io_ctx, &mirror_peers); | |
1067 | if (r < 0 && r != -ENOENT) { | |
1068 | lderr(cct) << "failed to list peers: " << cpp_strerror(r) << dendl; | |
1069 | return r; | |
1070 | } else if (!mirror_peers.empty()) { | |
1071 | lderr(cct) << "mirror peers still registered" << dendl; | |
1072 | return -EBUSY; | |
1073 | } | |
1074 | } | |
1075 | ||
1076 | cls::rbd::MirrorMode current_mirror_mode; | |
1077 | r = cls_client::mirror_mode_get(&io_ctx, ¤t_mirror_mode); | |
1078 | if (r < 0) { | |
1079 | lderr(cct) << "failed to retrieve mirror mode: " << cpp_strerror(r) | |
1080 | << dendl; | |
1081 | return r; | |
1082 | } | |
1083 | ||
1084 | if (current_mirror_mode == next_mirror_mode) { | |
1085 | return 0; | |
1086 | } else if (current_mirror_mode == cls::rbd::MIRROR_MODE_DISABLED) { | |
1087 | uuid_d uuid_gen; | |
1088 | uuid_gen.generate_random(); | |
1089 | r = cls_client::mirror_uuid_set(&io_ctx, uuid_gen.to_string()); | |
1090 | if (r < 0) { | |
1091 | lderr(cct) << "failed to allocate mirroring uuid: " << cpp_strerror(r) | |
1092 | << dendl; | |
1093 | return r; | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | if (current_mirror_mode != cls::rbd::MIRROR_MODE_IMAGE) { | |
1098 | r = cls_client::mirror_mode_set(&io_ctx, cls::rbd::MIRROR_MODE_IMAGE); | |
1099 | if (r < 0) { | |
1100 | lderr(cct) << "failed to set mirror mode to image: " | |
1101 | << cpp_strerror(r) << dendl; | |
1102 | return r; | |
1103 | } | |
1104 | ||
1105 | r = MirroringWatcher<>::notify_mode_updated(io_ctx, | |
1106 | cls::rbd::MIRROR_MODE_IMAGE); | |
1107 | if (r < 0) { | |
1108 | lderr(cct) << "failed to send update notification: " << cpp_strerror(r) | |
1109 | << dendl; | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | if (next_mirror_mode == cls::rbd::MIRROR_MODE_IMAGE) { | |
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | if (next_mirror_mode == cls::rbd::MIRROR_MODE_POOL) { | |
1118 | map<string, string> images; | |
11fdf7f2 | 1119 | r = Image<I>::list_images_v2(io_ctx, &images); |
7c673cae FG |
1120 | if (r < 0) { |
1121 | lderr(cct) << "failed listing images: " << cpp_strerror(r) << dendl; | |
1122 | return r; | |
1123 | } | |
1124 | ||
1125 | for (const auto& img_pair : images) { | |
1126 | uint64_t features; | |
11fdf7f2 TL |
1127 | uint64_t incompatible_features; |
1128 | r = cls_client::get_features(&io_ctx, util::header_name(img_pair.second), | |
1129 | true, &features, &incompatible_features); | |
7c673cae FG |
1130 | if (r < 0) { |
1131 | lderr(cct) << "error getting features for image " << img_pair.first | |
1132 | << ": " << cpp_strerror(r) << dendl; | |
1133 | return r; | |
1134 | } | |
1135 | ||
9f95a23c TL |
1136 | // Enable only journal based mirroring |
1137 | ||
7c673cae FG |
1138 | if ((features & RBD_FEATURE_JOURNALING) != 0) { |
1139 | I *img_ctx = I::create("", img_pair.second, nullptr, io_ctx, false); | |
11fdf7f2 | 1140 | r = img_ctx->state->open(0); |
7c673cae FG |
1141 | if (r < 0) { |
1142 | lderr(cct) << "error opening image "<< img_pair.first << ": " | |
1143 | << cpp_strerror(r) << dendl; | |
1144 | return r; | |
1145 | } | |
1146 | ||
9f95a23c | 1147 | r = image_enable(img_ctx, RBD_MIRROR_IMAGE_MODE_JOURNAL, true); |
7c673cae FG |
1148 | int close_r = img_ctx->state->close(); |
1149 | if (r < 0) { | |
1150 | lderr(cct) << "error enabling mirroring for image " | |
1151 | << img_pair.first << ": " << cpp_strerror(r) << dendl; | |
1152 | return r; | |
1153 | } else if (close_r < 0) { | |
1154 | lderr(cct) << "failed to close image " << img_pair.first << ": " | |
1155 | << cpp_strerror(close_r) << dendl; | |
1156 | return close_r; | |
1157 | } | |
1158 | } | |
1159 | } | |
1160 | } else if (next_mirror_mode == cls::rbd::MIRROR_MODE_DISABLED) { | |
11fdf7f2 TL |
1161 | while (true) { |
1162 | bool retry_busy = false; | |
1163 | bool pending_busy = false; | |
7c673cae | 1164 | |
11fdf7f2 TL |
1165 | std::set<std::string> image_ids; |
1166 | r = list_mirror_images(io_ctx, image_ids); | |
1167 | if (r < 0) { | |
1168 | lderr(cct) << "failed listing images: " << cpp_strerror(r) << dendl; | |
1169 | return r; | |
1170 | } | |
7c673cae | 1171 | |
11fdf7f2 TL |
1172 | for (const auto& img_id : image_ids) { |
1173 | if (current_mirror_mode == cls::rbd::MIRROR_MODE_IMAGE) { | |
1174 | cls::rbd::MirrorImage mirror_image; | |
1175 | r = cls_client::mirror_image_get(&io_ctx, img_id, &mirror_image); | |
1176 | if (r < 0 && r != -ENOENT) { | |
1177 | lderr(cct) << "failed to retrieve mirroring state for image id " | |
1178 | << img_id << ": " << cpp_strerror(r) << dendl; | |
1179 | return r; | |
1180 | } | |
1181 | if (mirror_image.state == cls::rbd::MIRROR_IMAGE_STATE_ENABLED) { | |
1182 | lderr(cct) << "failed to disable mirror mode: there are still " | |
1183 | << "images with mirroring enabled" << dendl; | |
1184 | return -EINVAL; | |
1185 | } | |
1186 | } else { | |
1187 | I *img_ctx = I::create("", img_id, nullptr, io_ctx, false); | |
1188 | r = img_ctx->state->open(0); | |
1189 | if (r < 0) { | |
1190 | lderr(cct) << "error opening image id "<< img_id << ": " | |
1191 | << cpp_strerror(r) << dendl; | |
1192 | return r; | |
1193 | } | |
1194 | ||
1195 | r = image_disable(img_ctx, false); | |
1196 | int close_r = img_ctx->state->close(); | |
1197 | if (r == -EBUSY) { | |
1198 | pending_busy = true; | |
1199 | } else if (r < 0) { | |
1200 | lderr(cct) << "error disabling mirroring for image id " << img_id | |
1201 | << cpp_strerror(r) << dendl; | |
1202 | return r; | |
1203 | } else if (close_r < 0) { | |
1204 | lderr(cct) << "failed to close image id " << img_id << ": " | |
1205 | << cpp_strerror(close_r) << dendl; | |
1206 | return close_r; | |
1207 | } else if (pending_busy) { | |
1208 | // at least one mirrored image was successfully disabled, so we can | |
1209 | // retry any failures caused by busy parent/child relationships | |
1210 | retry_busy = true; | |
1211 | } | |
7c673cae FG |
1212 | } |
1213 | } | |
11fdf7f2 TL |
1214 | |
1215 | if (!retry_busy && pending_busy) { | |
1216 | lderr(cct) << "error disabling mirroring for one or more images" | |
1217 | << dendl; | |
1218 | return -EBUSY; | |
1219 | } else if (!retry_busy) { | |
1220 | break; | |
1221 | } | |
7c673cae FG |
1222 | } |
1223 | } | |
1224 | ||
1225 | r = cls_client::mirror_mode_set(&io_ctx, next_mirror_mode); | |
1226 | if (r < 0) { | |
1227 | lderr(cct) << "failed to set mirror mode: " << cpp_strerror(r) << dendl; | |
1228 | return r; | |
1229 | } | |
1230 | ||
1231 | r = MirroringWatcher<>::notify_mode_updated(io_ctx, next_mirror_mode); | |
1232 | if (r < 0) { | |
1233 | lderr(cct) << "failed to send update notification: " << cpp_strerror(r) | |
1234 | << dendl; | |
1235 | } | |
1236 | return 0; | |
1237 | } | |
1238 | ||
9f95a23c TL |
1239 | template <typename I> |
1240 | int Mirror<I>::uuid_get(librados::IoCtx& io_ctx, std::string* mirror_uuid) { | |
1241 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
1242 | ldout(cct, 20) << dendl; | |
1243 | ||
1244 | C_SaferCond ctx; | |
1245 | uuid_get(io_ctx, mirror_uuid, &ctx); | |
1246 | int r = ctx.wait(); | |
1247 | if (r < 0) { | |
1248 | if (r != -ENOENT) { | |
1249 | lderr(cct) << "failed to retrieve mirroring uuid: " << cpp_strerror(r) | |
1250 | << dendl; | |
1251 | } | |
1252 | return r; | |
1253 | } | |
1254 | ||
1255 | return 0; | |
1256 | } | |
1257 | ||
1258 | template <typename I> | |
1259 | void Mirror<I>::uuid_get(librados::IoCtx& io_ctx, std::string* mirror_uuid, | |
1260 | Context* on_finish) { | |
1261 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
1262 | ldout(cct, 20) << dendl; | |
1263 | ||
1264 | auto req = mirror::GetUuidRequest<I>::create(io_ctx, mirror_uuid, on_finish); | |
1265 | req->send(); | |
1266 | } | |
1267 | ||
eafe8130 TL |
1268 | template <typename I> |
1269 | int Mirror<I>::peer_bootstrap_create(librados::IoCtx& io_ctx, | |
1270 | std::string* token) { | |
1271 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
1272 | ldout(cct, 20) << dendl; | |
1273 | ||
1274 | auto mirror_mode = cls::rbd::MIRROR_MODE_DISABLED; | |
1275 | int r = cls_client::mirror_mode_get(&io_ctx, &mirror_mode); | |
1276 | if (r < 0 && r != -ENOENT) { | |
1277 | lderr(cct) << "failed to retrieve mirroring mode: " << cpp_strerror(r) | |
1278 | << dendl; | |
1279 | return r; | |
1280 | } else if (mirror_mode == cls::rbd::MIRROR_MODE_DISABLED) { | |
1281 | return -EINVAL; | |
1282 | } | |
1283 | ||
1284 | // retrieve the cluster fsid | |
1285 | std::string fsid; | |
1286 | librados::Rados rados(io_ctx); | |
1287 | r = rados.cluster_fsid(&fsid); | |
1288 | if (r < 0) { | |
1289 | lderr(cct) << "failed to retrieve cluster fsid: " << cpp_strerror(r) | |
1290 | << dendl; | |
1291 | return r; | |
1292 | } | |
1293 | ||
1294 | std::string peer_client_id; | |
1295 | std::string cephx_key; | |
1296 | r = create_bootstrap_user(cct, rados, &peer_client_id, &cephx_key); | |
1297 | if (r < 0) { | |
1298 | return r; | |
1299 | } | |
1300 | ||
1301 | std::string mon_host = cct->_conf.get_val<std::string>("mon_host"); | |
1302 | ldout(cct, 20) << "mon_host=" << mon_host << dendl; | |
1303 | ||
1304 | // format the token response | |
1305 | bufferlist token_bl; | |
1306 | token_bl.append( | |
1307 | R"({)" \ | |
1308 | R"("fsid":")" + fsid + R"(",)" + \ | |
1309 | R"("client_id":")" + peer_client_id + R"(",)" + \ | |
1310 | R"("key":")" + cephx_key + R"(",)" + \ | |
1311 | R"("mon_host":")" + \ | |
1312 | boost::replace_all_copy(mon_host, "\"", "\\\"") + R"(")" + \ | |
1313 | R"(})"); | |
1314 | ldout(cct, 20) << "token=" << token_bl.to_str() << dendl; | |
1315 | ||
1316 | bufferlist base64_bl; | |
1317 | token_bl.encode_base64(base64_bl); | |
1318 | *token = base64_bl.to_str(); | |
1319 | ||
1320 | return 0; | |
1321 | } | |
1322 | ||
1323 | template <typename I> | |
1324 | int Mirror<I>::peer_bootstrap_import(librados::IoCtx& io_ctx, | |
1325 | rbd_mirror_peer_direction_t direction, | |
1326 | const std::string& token) { | |
1327 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
1328 | ldout(cct, 20) << dendl; | |
1329 | ||
1330 | if (direction != RBD_MIRROR_PEER_DIRECTION_RX && | |
1331 | direction != RBD_MIRROR_PEER_DIRECTION_RX_TX) { | |
1332 | lderr(cct) << "invalid mirror peer direction" << dendl; | |
1333 | return -EINVAL; | |
1334 | } | |
1335 | ||
1336 | bufferlist token_bl; | |
1337 | try { | |
1338 | bufferlist base64_bl; | |
1339 | base64_bl.append(token); | |
1340 | token_bl.decode_base64(base64_bl); | |
1341 | } catch (buffer::error& err) { | |
1342 | lderr(cct) << "failed to decode base64" << dendl; | |
1343 | return -EINVAL; | |
1344 | } | |
1345 | ||
1346 | ldout(cct, 20) << "token=" << token_bl.to_str() << dendl; | |
1347 | ||
1348 | bool json_valid = false; | |
1349 | std::string expected_remote_fsid; | |
1350 | std::string remote_client_id; | |
1351 | std::string remote_key; | |
1352 | std::string remote_mon_host; | |
1353 | ||
1354 | json_spirit::mValue json_root; | |
1355 | if(json_spirit::read(token_bl.to_str(), json_root)) { | |
1356 | try { | |
1357 | auto& json_obj = json_root.get_obj(); | |
1358 | expected_remote_fsid = json_obj["fsid"].get_str(); | |
1359 | remote_client_id = json_obj["client_id"].get_str(); | |
1360 | remote_key = json_obj["key"].get_str(); | |
1361 | remote_mon_host = json_obj["mon_host"].get_str(); | |
1362 | json_valid = true; | |
1363 | } catch (std::runtime_error&) { | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | if (!json_valid) { | |
1368 | lderr(cct) << "invalid bootstrap token JSON received" << dendl; | |
1369 | return -EINVAL; | |
1370 | } | |
1371 | ||
1372 | // sanity check import process | |
1373 | std::string local_fsid; | |
1374 | librados::Rados rados(io_ctx); | |
1375 | int r = rados.cluster_fsid(&local_fsid); | |
1376 | if (r < 0) { | |
1377 | lderr(cct) << "failed to retrieve cluster fsid: " << cpp_strerror(r) | |
1378 | << dendl; | |
1379 | return r; | |
1380 | } | |
1381 | ||
1382 | std::string local_site_name; | |
1383 | r = site_name_get(rados, &local_site_name); | |
1384 | if (r < 0) { | |
1385 | lderr(cct) << "failed to retrieve cluster site name: " << cpp_strerror(r) | |
1386 | << dendl; | |
1387 | return r; | |
1388 | } | |
1389 | ||
1390 | // attempt to connect to remote cluster | |
1391 | librados::Rados remote_rados; | |
1392 | remote_rados.init(remote_client_id.c_str()); | |
1393 | ||
1394 | auto remote_cct = reinterpret_cast<CephContext*>(remote_rados.cct()); | |
1395 | remote_cct->_conf.set_val("mon_host", remote_mon_host); | |
1396 | remote_cct->_conf.set_val("key", remote_key); | |
1397 | ||
1398 | r = remote_rados.connect(); | |
1399 | if (r < 0) { | |
1400 | lderr(cct) << "failed to connect to peer cluster: " << cpp_strerror(r) | |
1401 | << dendl; | |
1402 | return r; | |
1403 | } | |
1404 | ||
1405 | std::string remote_fsid; | |
1406 | r = remote_rados.cluster_fsid(&remote_fsid); | |
1407 | if (r < 0) { | |
1408 | lderr(cct) << "failed to retrieve remote cluster fsid: " | |
1409 | << cpp_strerror(r) << dendl; | |
1410 | return r; | |
1411 | } else if (local_fsid == remote_fsid) { | |
1412 | lderr(cct) << "cannot import token for local cluster" << dendl; | |
1413 | return -EINVAL; | |
1414 | } else if (expected_remote_fsid != remote_fsid) { | |
1415 | lderr(cct) << "unexpected remote cluster fsid" << dendl; | |
1416 | return -EINVAL; | |
1417 | } | |
1418 | ||
1419 | std::string remote_site_name; | |
1420 | r = site_name_get(remote_rados, &remote_site_name); | |
1421 | if (r < 0) { | |
1422 | lderr(cct) << "failed to retrieve remote cluster site name: " | |
1423 | << cpp_strerror(r) << dendl; | |
1424 | return r; | |
1425 | } else if (local_site_name == remote_site_name) { | |
1426 | lderr(cct) << "cannot import token for duplicate site name" << dendl; | |
1427 | return -EINVAL; | |
1428 | } | |
1429 | ||
1430 | librados::IoCtx remote_io_ctx; | |
1431 | r = remote_rados.ioctx_create(io_ctx.get_pool_name().c_str(), remote_io_ctx); | |
1432 | if (r == -ENOENT) { | |
1433 | ldout(cct, 10) << "remote pool does not exist" << dendl; | |
1434 | return r; | |
1435 | } else if (r < 0) { | |
1436 | lderr(cct) << "failed to open remote pool '" << io_ctx.get_pool_name() | |
1437 | << "': " << cpp_strerror(r) << dendl; | |
1438 | return r; | |
1439 | } | |
1440 | ||
1441 | auto remote_mirror_mode = cls::rbd::MIRROR_MODE_DISABLED; | |
1442 | r = cls_client::mirror_mode_get(&remote_io_ctx, &remote_mirror_mode); | |
1443 | if (r < 0 && r != -ENOENT) { | |
1444 | lderr(cct) << "failed to retrieve remote mirroring mode: " | |
1445 | << cpp_strerror(r) << dendl; | |
1446 | return r; | |
1447 | } else if (remote_mirror_mode == cls::rbd::MIRROR_MODE_DISABLED) { | |
1448 | return -ENOSYS; | |
1449 | } | |
1450 | ||
1451 | auto local_mirror_mode = cls::rbd::MIRROR_MODE_DISABLED; | |
1452 | r = cls_client::mirror_mode_get(&io_ctx, &local_mirror_mode); | |
1453 | if (r < 0 && r != -ENOENT) { | |
1454 | lderr(cct) << "failed to retrieve local mirroring mode: " << cpp_strerror(r) | |
1455 | << dendl; | |
1456 | return r; | |
1457 | } else if (local_mirror_mode == cls::rbd::MIRROR_MODE_DISABLED) { | |
1458 | // copy mirror mode from remote peer | |
1459 | r = mode_set(io_ctx, static_cast<rbd_mirror_mode_t>(remote_mirror_mode)); | |
1460 | if (r < 0) { | |
1461 | return r; | |
1462 | } | |
1463 | } | |
1464 | ||
1465 | if (direction == RBD_MIRROR_PEER_DIRECTION_RX_TX) { | |
1466 | // create a local mirror peer user and export it to the remote cluster | |
1467 | std::string local_client_id; | |
1468 | std::string local_key; | |
1469 | r = create_bootstrap_user(cct, rados, &local_client_id, &local_key); | |
1470 | if (r < 0) { | |
1471 | return r; | |
1472 | } | |
1473 | ||
1474 | std::string local_mon_host = cct->_conf.get_val<std::string>("mon_host"); | |
1475 | ||
1476 | // create local cluster peer in remote cluster | |
9f95a23c TL |
1477 | r = create_bootstrap_peer(cct, remote_io_ctx, |
1478 | RBD_MIRROR_PEER_DIRECTION_RX_TX, local_site_name, | |
1479 | local_fsid, local_client_id, local_key, | |
1480 | local_mon_host, "local", "remote"); | |
eafe8130 TL |
1481 | if (r < 0) { |
1482 | return r; | |
1483 | } | |
1484 | } | |
1485 | ||
1486 | // create remote cluster peer in local cluster | |
9f95a23c TL |
1487 | r = create_bootstrap_peer(cct, io_ctx, direction, remote_site_name, |
1488 | remote_fsid, remote_client_id, remote_key, | |
1489 | remote_mon_host, "remote", "local"); | |
eafe8130 TL |
1490 | if (r < 0) { |
1491 | return r; | |
1492 | } | |
1493 | ||
1494 | return 0; | |
1495 | } | |
1496 | ||
7c673cae | 1497 | template <typename I> |
9f95a23c TL |
1498 | int Mirror<I>::peer_site_add(librados::IoCtx& io_ctx, std::string *uuid, |
1499 | mirror_peer_direction_t direction, | |
1500 | const std::string &site_name, | |
1501 | const std::string &client_name) { | |
7c673cae | 1502 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); |
9f95a23c | 1503 | ldout(cct, 20) << "name=" << site_name << ", " |
7c673cae FG |
1504 | << "client=" << client_name << dendl; |
1505 | ||
9f95a23c TL |
1506 | if (cct->_conf->cluster == site_name) { |
1507 | lderr(cct) << "cannot add self as remote peer" << dendl; | |
11fdf7f2 TL |
1508 | return -EINVAL; |
1509 | } | |
1510 | ||
9f95a23c | 1511 | if (direction == RBD_MIRROR_PEER_DIRECTION_TX) { |
7c673cae FG |
1512 | return -EINVAL; |
1513 | } | |
1514 | ||
1515 | int r; | |
1516 | do { | |
1517 | uuid_d uuid_gen; | |
1518 | uuid_gen.generate_random(); | |
1519 | ||
1520 | *uuid = uuid_gen.to_string(); | |
9f95a23c TL |
1521 | r = cls_client::mirror_peer_add( |
1522 | &io_ctx, {*uuid, static_cast<cls::rbd::MirrorPeerDirection>(direction), | |
1523 | site_name, client_name, ""}); | |
7c673cae FG |
1524 | if (r == -ESTALE) { |
1525 | ldout(cct, 5) << "duplicate UUID detected, retrying" << dendl; | |
1526 | } else if (r < 0) { | |
1911f103 | 1527 | lderr(cct) << "failed to add mirror peer '" << site_name << "': " |
7c673cae FG |
1528 | << cpp_strerror(r) << dendl; |
1529 | return r; | |
1530 | } | |
1531 | } while (r == -ESTALE); | |
1532 | return 0; | |
1533 | } | |
1534 | ||
1535 | template <typename I> | |
9f95a23c TL |
1536 | int Mirror<I>::peer_site_remove(librados::IoCtx& io_ctx, |
1537 | const std::string &uuid) { | |
7c673cae FG |
1538 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); |
1539 | ldout(cct, 20) << "uuid=" << uuid << dendl; | |
1540 | ||
11fdf7f2 TL |
1541 | int r = remove_peer_config_key(io_ctx, uuid); |
1542 | if (r < 0) { | |
1543 | lderr(cct) << "failed to remove peer attributes '" << uuid << "': " | |
1544 | << cpp_strerror(r) << dendl; | |
1545 | return r; | |
1546 | } | |
1547 | ||
1548 | r = cls_client::mirror_peer_remove(&io_ctx, uuid); | |
7c673cae FG |
1549 | if (r < 0 && r != -ENOENT) { |
1550 | lderr(cct) << "failed to remove peer '" << uuid << "': " | |
1551 | << cpp_strerror(r) << dendl; | |
1552 | return r; | |
1553 | } | |
9f95a23c TL |
1554 | |
1555 | vector<string> names; | |
1556 | r = Namespace<I>::list(io_ctx, &names); | |
1557 | if (r < 0) { | |
1558 | return r; | |
1559 | } | |
1560 | ||
1561 | names.push_back(""); | |
1562 | ||
1563 | librados::IoCtx ns_io_ctx; | |
1564 | ns_io_ctx.dup(io_ctx); | |
1565 | ||
1566 | for (auto &name : names) { | |
1567 | ns_io_ctx.set_namespace(name); | |
1568 | ||
1569 | std::set<std::string> image_ids; | |
1570 | r = list_mirror_images(ns_io_ctx, image_ids); | |
1571 | if (r < 0) { | |
1572 | lderr(cct) << "failed listing images in " | |
1573 | << (name.empty() ? "default" : name) << " namespace : " | |
1574 | << cpp_strerror(r) << dendl; | |
1575 | return r; | |
1576 | } | |
1577 | ||
1578 | for (const auto& image_id : image_ids) { | |
1579 | cls::rbd::MirrorImage mirror_image; | |
1580 | r = cls_client::mirror_image_get(&ns_io_ctx, image_id, &mirror_image); | |
1581 | if (r == -ENOENT) { | |
1582 | continue; | |
1583 | } | |
1584 | if (r < 0) { | |
1585 | lderr(cct) << "error getting mirror info for image " << image_id | |
1586 | << ": " << cpp_strerror(r) << dendl; | |
1587 | return r; | |
1588 | } | |
1589 | if (mirror_image.mode != cls::rbd::MIRROR_IMAGE_MODE_SNAPSHOT) { | |
1590 | continue; | |
1591 | } | |
1592 | ||
1593 | // Snapshot based mirroring. Unlink the peer from mirroring snapshots. | |
1594 | // TODO: optimize. | |
1595 | ||
1596 | I *img_ctx = I::create("", image_id, nullptr, ns_io_ctx, false); | |
1597 | img_ctx->read_only_mask &= ~IMAGE_READ_ONLY_FLAG_NON_PRIMARY; | |
1598 | ||
1599 | r = img_ctx->state->open(0); | |
1600 | if (r == -ENOENT) { | |
1601 | continue; | |
1602 | } | |
1603 | if (r < 0) { | |
1604 | lderr(cct) << "error opening image " << image_id << ": " | |
1605 | << cpp_strerror(r) << dendl; | |
1606 | return r; | |
1607 | } | |
1608 | ||
1609 | std::list<uint64_t> snap_ids; | |
1610 | { | |
1611 | std::shared_lock image_locker{img_ctx->image_lock}; | |
1612 | for (auto &it : img_ctx->snap_info) { | |
1613 | auto info = boost::get<cls::rbd::MirrorSnapshotNamespace>( | |
1614 | &it.second.snap_namespace); | |
1615 | if (info && info->mirror_peer_uuids.count(uuid)) { | |
1616 | snap_ids.push_back(it.first); | |
1617 | } | |
1618 | } | |
1619 | } | |
1620 | for (auto snap_id : snap_ids) { | |
1621 | C_SaferCond cond; | |
1622 | auto req = mirror::snapshot::UnlinkPeerRequest<I>::create( | |
1623 | img_ctx, snap_id, uuid, &cond); | |
1624 | req->send(); | |
1625 | r = cond.wait(); | |
1626 | if (r == -ENOENT) { | |
1627 | r = 0; | |
1628 | } | |
1629 | if (r < 0) { | |
1630 | break; | |
1631 | } | |
1632 | } | |
1633 | ||
1634 | int close_r = img_ctx->state->close(); | |
1635 | if (r < 0) { | |
1636 | lderr(cct) << "error unlinking peer for image " << image_id << ": " | |
1637 | << cpp_strerror(r) << dendl; | |
1638 | return r; | |
1639 | } else if (close_r < 0) { | |
1640 | lderr(cct) << "failed to close image " << image_id << ": " | |
1641 | << cpp_strerror(close_r) << dendl; | |
1642 | return close_r; | |
1643 | } | |
1644 | } | |
1645 | } | |
1646 | ||
7c673cae FG |
1647 | return 0; |
1648 | } | |
1649 | ||
1650 | template <typename I> | |
9f95a23c TL |
1651 | int Mirror<I>::peer_site_list(librados::IoCtx& io_ctx, |
1652 | std::vector<mirror_peer_site_t> *peers) { | |
7c673cae FG |
1653 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); |
1654 | ldout(cct, 20) << dendl; | |
1655 | ||
1656 | std::vector<cls::rbd::MirrorPeer> mirror_peers; | |
1657 | int r = cls_client::mirror_peer_list(&io_ctx, &mirror_peers); | |
1658 | if (r < 0 && r != -ENOENT) { | |
1659 | lderr(cct) << "failed to list peers: " << cpp_strerror(r) << dendl; | |
1660 | return r; | |
1661 | } | |
1662 | ||
1663 | peers->clear(); | |
1664 | peers->reserve(mirror_peers.size()); | |
1665 | for (auto &mirror_peer : mirror_peers) { | |
9f95a23c | 1666 | mirror_peer_site_t peer; |
7c673cae | 1667 | peer.uuid = mirror_peer.uuid; |
9f95a23c TL |
1668 | peer.direction = static_cast<mirror_peer_direction_t>( |
1669 | mirror_peer.mirror_peer_direction); | |
1670 | peer.site_name = mirror_peer.site_name; | |
1671 | peer.mirror_uuid = mirror_peer.mirror_uuid; | |
7c673cae | 1672 | peer.client_name = mirror_peer.client_name; |
9f95a23c | 1673 | peer.last_seen = mirror_peer.last_seen.sec(); |
7c673cae FG |
1674 | peers->push_back(peer); |
1675 | } | |
1676 | return 0; | |
1677 | } | |
1678 | ||
1679 | template <typename I> | |
9f95a23c TL |
1680 | int Mirror<I>::peer_site_set_client(librados::IoCtx& io_ctx, |
1681 | const std::string &uuid, | |
1682 | const std::string &client_name) { | |
7c673cae FG |
1683 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); |
1684 | ldout(cct, 20) << "uuid=" << uuid << ", " | |
1685 | << "client=" << client_name << dendl; | |
1686 | ||
1687 | int r = cls_client::mirror_peer_set_client(&io_ctx, uuid, client_name); | |
1688 | if (r < 0) { | |
1689 | lderr(cct) << "failed to update client '" << uuid << "': " | |
1690 | << cpp_strerror(r) << dendl; | |
1691 | return r; | |
1692 | } | |
1693 | return 0; | |
1694 | } | |
1695 | ||
1696 | template <typename I> | |
9f95a23c TL |
1697 | int Mirror<I>::peer_site_set_name(librados::IoCtx& io_ctx, |
1698 | const std::string &uuid, | |
1699 | const std::string &site_name) { | |
7c673cae FG |
1700 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); |
1701 | ldout(cct, 20) << "uuid=" << uuid << ", " | |
9f95a23c | 1702 | << "name=" << site_name << dendl; |
7c673cae | 1703 | |
9f95a23c | 1704 | if (cct->_conf->cluster == site_name) { |
11fdf7f2 TL |
1705 | lderr(cct) << "cannot set self as remote peer" << dendl; |
1706 | return -EINVAL; | |
1707 | } | |
1708 | ||
9f95a23c TL |
1709 | int r = cls_client::mirror_peer_set_cluster(&io_ctx, uuid, site_name); |
1710 | if (r < 0) { | |
1711 | lderr(cct) << "failed to update site '" << uuid << "': " | |
1712 | << cpp_strerror(r) << dendl; | |
1713 | return r; | |
1714 | } | |
1715 | return 0; | |
1716 | } | |
1717 | ||
1718 | template <typename I> | |
1719 | int Mirror<I>::peer_site_set_direction(librados::IoCtx& io_ctx, | |
1720 | const std::string &uuid, | |
1721 | mirror_peer_direction_t direction) { | |
1722 | cls::rbd::MirrorPeerDirection mirror_peer_direction = static_cast< | |
1723 | cls::rbd::MirrorPeerDirection>(direction); | |
1724 | ||
1725 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
1726 | ldout(cct, 20) << "uuid=" << uuid << ", " | |
1727 | << "direction=" << mirror_peer_direction << dendl; | |
1728 | ||
1729 | int r = cls_client::mirror_peer_set_direction(&io_ctx, uuid, | |
1730 | mirror_peer_direction); | |
7c673cae | 1731 | if (r < 0) { |
9f95a23c | 1732 | lderr(cct) << "failed to update direction '" << uuid << "': " |
7c673cae FG |
1733 | << cpp_strerror(r) << dendl; |
1734 | return r; | |
1735 | } | |
1736 | return 0; | |
1737 | } | |
1738 | ||
11fdf7f2 | 1739 | template <typename I> |
9f95a23c TL |
1740 | int Mirror<I>::peer_site_get_attributes(librados::IoCtx& io_ctx, |
1741 | const std::string &uuid, | |
1742 | Attributes* attributes) { | |
11fdf7f2 TL |
1743 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); |
1744 | ldout(cct, 20) << "uuid=" << uuid << dendl; | |
1745 | ||
1746 | attributes->clear(); | |
11fdf7f2 TL |
1747 | |
1748 | librados::Rados rados(io_ctx); | |
eafe8130 TL |
1749 | std::string value; |
1750 | int r = get_config_key(rados, get_peer_config_key_name(io_ctx.get_id(), uuid), | |
1751 | &value); | |
1752 | if (r == -ENOENT || value.empty()) { | |
11fdf7f2 TL |
1753 | return -ENOENT; |
1754 | } else if (r < 0) { | |
1755 | lderr(cct) << "failed to retrieve peer attributes: " << cpp_strerror(r) | |
1756 | << dendl; | |
1757 | return r; | |
1758 | } | |
1759 | ||
1760 | bool json_valid = false; | |
1761 | json_spirit::mValue json_root; | |
eafe8130 | 1762 | if(json_spirit::read(value, json_root)) { |
11fdf7f2 TL |
1763 | try { |
1764 | auto& json_obj = json_root.get_obj(); | |
1765 | for (auto& pairs : json_obj) { | |
1766 | (*attributes)[pairs.first] = pairs.second.get_str(); | |
1767 | } | |
1768 | json_valid = true; | |
1769 | } catch (std::runtime_error&) { | |
1770 | } | |
1771 | } | |
1772 | ||
1773 | if (!json_valid) { | |
1774 | lderr(cct) << "invalid peer attributes JSON received" << dendl; | |
1775 | return -EINVAL; | |
1776 | } | |
1777 | return 0; | |
1778 | } | |
1779 | ||
1780 | template <typename I> | |
9f95a23c TL |
1781 | int Mirror<I>::peer_site_set_attributes(librados::IoCtx& io_ctx, |
1782 | const std::string &uuid, | |
1783 | const Attributes& attributes) { | |
11fdf7f2 TL |
1784 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); |
1785 | ldout(cct, 20) << "uuid=" << uuid << ", " | |
1786 | << "attributes=" << attributes << dendl; | |
1787 | ||
9f95a23c TL |
1788 | std::vector<mirror_peer_site_t> mirror_peers; |
1789 | int r = peer_site_list(io_ctx, &mirror_peers); | |
11fdf7f2 TL |
1790 | if (r < 0) { |
1791 | return r; | |
1792 | } | |
1793 | ||
1794 | if (std::find_if(mirror_peers.begin(), mirror_peers.end(), | |
9f95a23c | 1795 | [&uuid](const librbd::mirror_peer_site_t& peer) { |
11fdf7f2 TL |
1796 | return uuid == peer.uuid; |
1797 | }) == mirror_peers.end()) { | |
1798 | ldout(cct, 5) << "mirror peer uuid " << uuid << " does not exist" << dendl; | |
1799 | return -ENOENT; | |
1800 | } | |
1801 | ||
1802 | std::stringstream ss; | |
1803 | ss << "{"; | |
1804 | for (auto& pair : attributes) { | |
1805 | ss << "\\\"" << pair.first << "\\\": " | |
1806 | << "\\\"" << pair.second << "\\\""; | |
1807 | if (&pair != &(*attributes.rbegin())) { | |
1808 | ss << ", "; | |
1809 | } | |
1810 | } | |
1811 | ss << "}"; | |
1812 | ||
11fdf7f2 | 1813 | librados::Rados rados(io_ctx); |
eafe8130 TL |
1814 | r = set_config_key(rados, get_peer_config_key_name(io_ctx.get_id(), uuid), |
1815 | ss.str()); | |
1816 | if (r < 0 && r != -ENOENT) { | |
11fdf7f2 TL |
1817 | lderr(cct) << "failed to update peer attributes: " << cpp_strerror(r) |
1818 | << dendl; | |
1819 | return r; | |
1820 | } | |
1821 | ||
1822 | return 0; | |
1823 | } | |
1824 | ||
7c673cae | 1825 | template <typename I> |
9f95a23c TL |
1826 | int Mirror<I>::image_global_status_list( |
1827 | librados::IoCtx& io_ctx, const std::string &start_id, size_t max, | |
1828 | IdToMirrorImageGlobalStatus *images) { | |
7c673cae FG |
1829 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); |
1830 | int r; | |
1831 | ||
1832 | map<string, string> id_to_name; | |
1833 | { | |
1834 | map<string, string> name_to_id; | |
11fdf7f2 | 1835 | r = Image<I>::list_images_v2(io_ctx, &name_to_id); |
7c673cae FG |
1836 | if (r < 0) { |
1837 | return r; | |
1838 | } | |
1839 | for (auto it : name_to_id) { | |
1840 | id_to_name[it.second] = it.first; | |
1841 | } | |
1842 | } | |
1843 | ||
1844 | map<std::string, cls::rbd::MirrorImage> images_; | |
1845 | map<std::string, cls::rbd::MirrorImageStatus> statuses_; | |
1846 | ||
1847 | r = librbd::cls_client::mirror_image_status_list(&io_ctx, start_id, max, | |
1848 | &images_, &statuses_); | |
c07f9fc5 | 1849 | if (r < 0 && r != -ENOENT) { |
7c673cae FG |
1850 | lderr(cct) << "failed to list mirror image statuses: " |
1851 | << cpp_strerror(r) << dendl; | |
1852 | return r; | |
1853 | } | |
1854 | ||
9f95a23c | 1855 | const std::string STATUS_NOT_FOUND("status not found"); |
7c673cae FG |
1856 | for (auto it = images_.begin(); it != images_.end(); ++it) { |
1857 | auto &image_id = it->first; | |
1858 | auto &info = it->second; | |
3efd9988 FG |
1859 | if (info.state == cls::rbd::MIRROR_IMAGE_STATE_DISABLED) { |
1860 | continue; | |
1861 | } | |
1862 | ||
7c673cae FG |
1863 | auto &image_name = id_to_name[image_id]; |
1864 | if (image_name.empty()) { | |
1865 | lderr(cct) << "failed to find image name for image " << image_id << ", " | |
1866 | << "using image id as name" << dendl; | |
1867 | image_name = image_id; | |
1868 | } | |
9f95a23c TL |
1869 | |
1870 | mirror_image_global_status_t& global_status = (*images)[image_id]; | |
1871 | global_status.name = image_name; | |
1872 | global_status.info = mirror_image_info_t{ | |
7c673cae FG |
1873 | info.global_image_id, |
1874 | static_cast<mirror_image_state_t>(info.state), | |
9f95a23c TL |
1875 | false}; // XXX: To set "primary" right would require an additional call. |
1876 | ||
f67539c2 | 1877 | bool found_local_site_status = false; |
9f95a23c TL |
1878 | auto s_it = statuses_.find(image_id); |
1879 | if (s_it != statuses_.end()) { | |
1880 | auto& status = s_it->second; | |
1881 | ||
1882 | global_status.site_statuses.reserve( | |
1883 | status.mirror_image_site_statuses.size()); | |
1884 | for (auto& site_status : status.mirror_image_site_statuses) { | |
f67539c2 TL |
1885 | if (site_status.mirror_uuid == |
1886 | cls::rbd::MirrorImageSiteStatus::LOCAL_MIRROR_UUID) { | |
1887 | found_local_site_status = true; | |
1888 | } | |
1889 | ||
9f95a23c TL |
1890 | global_status.site_statuses.push_back(mirror_image_site_status_t{ |
1891 | site_status.mirror_uuid, | |
1892 | static_cast<mirror_image_status_state_t>(site_status.state), | |
1893 | site_status.state == cls::rbd::MIRROR_IMAGE_STATUS_STATE_UNKNOWN ? | |
1894 | STATUS_NOT_FOUND : site_status.description, | |
1895 | site_status.last_update.sec(), site_status.up}); | |
1896 | } | |
f67539c2 TL |
1897 | } |
1898 | ||
1899 | if (!found_local_site_status) { | |
9f95a23c TL |
1900 | global_status.site_statuses.push_back(mirror_image_site_status_t{ |
1901 | cls::rbd::MirrorImageSiteStatus::LOCAL_MIRROR_UUID, | |
1902 | MIRROR_IMAGE_STATUS_STATE_UNKNOWN, STATUS_NOT_FOUND, 0, false}); | |
1903 | } | |
7c673cae FG |
1904 | } |
1905 | ||
1906 | return 0; | |
1907 | } | |
1908 | ||
1909 | template <typename I> | |
1910 | int Mirror<I>::image_status_summary(librados::IoCtx& io_ctx, | |
1911 | MirrorImageStatusStates *states) { | |
1912 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
1913 | ||
9f95a23c TL |
1914 | std::vector<cls::rbd::MirrorPeer> mirror_peers; |
1915 | int r = cls_client::mirror_peer_list(&io_ctx, &mirror_peers); | |
1916 | if (r < 0 && r != -ENOENT) { | |
1917 | lderr(cct) << "failed to list mirror peers: " << cpp_strerror(r) << dendl; | |
1918 | return r; | |
1919 | } | |
1920 | ||
f67539c2 | 1921 | std::map<cls::rbd::MirrorImageStatusState, int32_t> states_; |
9f95a23c TL |
1922 | r = cls_client::mirror_image_status_get_summary(&io_ctx, mirror_peers, |
1923 | &states_); | |
3efd9988 | 1924 | if (r < 0 && r != -ENOENT) { |
7c673cae FG |
1925 | lderr(cct) << "failed to get mirror status summary: " |
1926 | << cpp_strerror(r) << dendl; | |
1927 | return r; | |
1928 | } | |
1929 | for (auto &s : states_) { | |
1930 | (*states)[static_cast<mirror_image_status_state_t>(s.first)] = s.second; | |
1931 | } | |
1932 | return 0; | |
1933 | } | |
1934 | ||
11fdf7f2 TL |
1935 | template <typename I> |
1936 | int Mirror<I>::image_instance_id_list( | |
1937 | librados::IoCtx& io_ctx, const std::string &start_image_id, size_t max, | |
1938 | std::map<std::string, std::string> *instance_ids) { | |
1939 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
1940 | std::map<std::string, entity_inst_t> instances; | |
1941 | ||
1942 | int r = librbd::cls_client::mirror_image_instance_list( | |
1943 | &io_ctx, start_image_id, max, &instances); | |
1944 | if (r < 0 && r != -ENOENT) { | |
1945 | lderr(cct) << "failed to list mirror image instances: " << cpp_strerror(r) | |
1946 | << dendl; | |
1947 | return r; | |
1948 | } | |
1949 | ||
1950 | for (auto it : instances) { | |
1951 | (*instance_ids)[it.first] = stringify(it.second.name.num()); | |
1952 | } | |
1953 | ||
1954 | return 0; | |
1955 | } | |
1956 | ||
9f95a23c TL |
1957 | template <typename I> |
1958 | int Mirror<I>::image_info_list( | |
1959 | librados::IoCtx& io_ctx, mirror_image_mode_t *mode_filter, | |
1960 | const std::string &start_id, size_t max, | |
1961 | std::map<std::string, std::pair<mirror_image_mode_t, | |
1962 | mirror_image_info_t>> *entries) { | |
1963 | CephContext *cct = reinterpret_cast<CephContext *>(io_ctx.cct()); | |
1964 | ldout(cct, 20) << "pool=" << io_ctx.get_pool_name() << ", mode_filter=" | |
1965 | << (mode_filter ? stringify(*mode_filter) : "null") | |
1966 | << ", start_id=" << start_id << ", max=" << max << dendl; | |
1967 | ||
1968 | std::string last_read = start_id; | |
1969 | entries->clear(); | |
1970 | ||
1971 | while (entries->size() < max) { | |
1972 | map<std::string, cls::rbd::MirrorImage> images; | |
1973 | map<std::string, cls::rbd::MirrorImageStatus> statuses; | |
1974 | ||
1975 | int r = librbd::cls_client::mirror_image_status_list(&io_ctx, last_read, | |
1976 | max, &images, | |
1977 | &statuses); | |
1978 | if (r < 0 && r != -ENOENT) { | |
1979 | lderr(cct) << "failed to list mirror image statuses: " | |
1980 | << cpp_strerror(r) << dendl; | |
1981 | return r; | |
1982 | } | |
1983 | ||
1984 | if (images.empty()) { | |
1985 | break; | |
1986 | } | |
1987 | ||
f67539c2 | 1988 | AsioEngine asio_engine(io_ctx); |
9f95a23c TL |
1989 | |
1990 | for (auto &it : images) { | |
1991 | auto &image_id = it.first; | |
1992 | auto &image = it.second; | |
1993 | auto mode = static_cast<mirror_image_mode_t>(image.mode); | |
1994 | ||
1995 | if ((mode_filter && mode != *mode_filter) || | |
1996 | image.state != cls::rbd::MIRROR_IMAGE_STATE_ENABLED) { | |
1997 | continue; | |
1998 | } | |
1999 | ||
2000 | // need to call get_info for every image to retrieve promotion state | |
2001 | ||
2002 | mirror_image_info_t info; | |
f67539c2 TL |
2003 | r = image_get_info(io_ctx, asio_engine.get_work_queue(), image_id, &info); |
2004 | if (r < 0) { | |
2005 | continue; | |
2006 | } | |
2007 | ||
2008 | (*entries)[image_id] = std::make_pair(mode, info); | |
2009 | if (entries->size() == max) { | |
2010 | break; | |
9f95a23c TL |
2011 | } |
2012 | } | |
2013 | ||
2014 | last_read = images.rbegin()->first; | |
2015 | } | |
2016 | ||
2017 | return 0; | |
2018 | } | |
2019 | ||
2020 | template <typename I> | |
cd265ab1 TL |
2021 | int Mirror<I>::image_snapshot_create(I *ictx, uint32_t flags, |
2022 | uint64_t *snap_id) { | |
2023 | C_SaferCond ctx; | |
2024 | Mirror<I>::image_snapshot_create(ictx, flags, snap_id, &ctx); | |
2025 | ||
2026 | return ctx.wait(); | |
2027 | } | |
2028 | ||
2029 | template <typename I> | |
2030 | void Mirror<I>::image_snapshot_create(I *ictx, uint32_t flags, | |
2031 | uint64_t *snap_id, Context *on_finish) { | |
9f95a23c TL |
2032 | CephContext *cct = ictx->cct; |
2033 | ldout(cct, 20) << "ictx=" << ictx << dendl; | |
2034 | ||
f67539c2 TL |
2035 | uint64_t snap_create_flags = 0; |
2036 | int r = util::snap_create_flags_api_to_internal(cct, flags, | |
2037 | &snap_create_flags); | |
2038 | if (r < 0) { | |
2039 | on_finish->complete(r); | |
cd265ab1 | 2040 | return; |
9f95a23c TL |
2041 | } |
2042 | ||
cd265ab1 | 2043 | auto on_refresh = new LambdaContext( |
f67539c2 | 2044 | [ictx, snap_create_flags, snap_id, on_finish](int r) { |
cd265ab1 TL |
2045 | if (r < 0) { |
2046 | lderr(ictx->cct) << "refresh failed: " << cpp_strerror(r) << dendl; | |
2047 | on_finish->complete(r); | |
2048 | return; | |
2049 | } | |
9f95a23c | 2050 | |
f67539c2 TL |
2051 | auto ctx = new C_ImageSnapshotCreate<I>(ictx, snap_create_flags, snap_id, |
2052 | on_finish); | |
cd265ab1 TL |
2053 | auto req = mirror::GetInfoRequest<I>::create(*ictx, &ctx->mirror_image, |
2054 | &ctx->promotion_state, | |
2055 | &ctx->primary_mirror_uuid, | |
2056 | ctx); | |
2057 | req->send(); | |
2058 | }); | |
9f95a23c | 2059 | |
cd265ab1 TL |
2060 | if (ictx->state->is_refresh_required()) { |
2061 | ictx->state->refresh(on_refresh); | |
2062 | } else { | |
2063 | on_refresh->complete(0); | |
2064 | } | |
9f95a23c TL |
2065 | } |
2066 | ||
7c673cae FG |
2067 | } // namespace api |
2068 | } // namespace librbd | |
2069 | ||
2070 | template class librbd::api::Mirror<librbd::ImageCtx>; |