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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 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net> | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
15 | #include <sstream> | |
16 | #include <boost/utility.hpp> | |
224ce89b | 17 | #include <boost/regex.hpp> |
7c673cae FG |
18 | |
19 | #include "MDSMonitor.h" | |
20 | #include "FSCommands.h" | |
21 | #include "Monitor.h" | |
22 | #include "MonitorDBStore.h" | |
23 | #include "OSDMonitor.h" | |
24 | #include "PGMonitor.h" | |
25 | ||
26 | #include "common/strtol.h" | |
27 | #include "common/perf_counters.h" | |
28 | #include "common/config.h" | |
29 | #include "common/cmdparse.h" | |
30 | #include "messages/MMDSMap.h" | |
31 | #include "messages/MFSMap.h" | |
32 | #include "messages/MFSMapUser.h" | |
33 | #include "messages/MMDSLoadTargets.h" | |
34 | #include "messages/MMonCommand.h" | |
35 | #include "messages/MGenericMessage.h" | |
36 | ||
37 | #include "include/assert.h" | |
38 | #include "include/str_list.h" | |
39 | #include "include/stringify.h" | |
40 | #include "mds/mdstypes.h" | |
41 | #include "Session.h" | |
42 | ||
43 | #define dout_subsys ceph_subsys_mon | |
44 | #undef dout_prefix | |
28e407b8 AA |
45 | #define dout_prefix _prefix(_dout, mon, get_fsmap()) |
46 | static ostream& _prefix(std::ostream *_dout, Monitor *mon, const FSMap& fsmap) { | |
7c673cae FG |
47 | return *_dout << "mon." << mon->name << "@" << mon->rank |
48 | << "(" << mon->get_state_name() | |
49 | << ").mds e" << fsmap.get_epoch() << " "; | |
50 | } | |
51 | ||
3efd9988 FG |
52 | static const string MDS_METADATA_PREFIX("mds_metadata"); |
53 | static const string MDS_HEALTH_PREFIX("mds_health"); | |
54 | ||
55 | ||
7c673cae FG |
56 | /* |
57 | * Specialized implementation of cmd_getval to allow us to parse | |
58 | * out strongly-typedef'd types | |
59 | */ | |
60 | template<> bool cmd_getval(CephContext *cct, const cmdmap_t& cmdmap, | |
31f18b77 | 61 | const std::string& k, mds_gid_t &val) |
7c673cae FG |
62 | { |
63 | return cmd_getval(cct, cmdmap, k, (int64_t&)val); | |
64 | } | |
65 | ||
66 | template<> bool cmd_getval(CephContext *cct, const cmdmap_t& cmdmap, | |
31f18b77 | 67 | const std::string& k, mds_rank_t &val) |
7c673cae FG |
68 | { |
69 | return cmd_getval(cct, cmdmap, k, (int64_t&)val); | |
70 | } | |
71 | ||
72 | template<> bool cmd_getval(CephContext *cct, const cmdmap_t& cmdmap, | |
31f18b77 | 73 | const std::string& k, MDSMap::DaemonState &val) |
7c673cae FG |
74 | { |
75 | return cmd_getval(cct, cmdmap, k, (int64_t&)val); | |
76 | } | |
77 | ||
7c673cae FG |
78 | // my methods |
79 | ||
28e407b8 | 80 | void MDSMonitor::print_map(const FSMap &m, int dbl) |
7c673cae FG |
81 | { |
82 | dout(dbl) << "print_map\n"; | |
83 | m.print(*_dout); | |
84 | *_dout << dendl; | |
85 | } | |
86 | ||
87 | // service methods | |
88 | void MDSMonitor::create_initial() | |
89 | { | |
90 | dout(10) << "create_initial" << dendl; | |
91 | } | |
92 | ||
3efd9988 FG |
93 | void MDSMonitor::get_store_prefixes(std::set<string>& s) |
94 | { | |
95 | s.insert(service_name); | |
96 | s.insert(MDS_METADATA_PREFIX); | |
97 | s.insert(MDS_HEALTH_PREFIX); | |
98 | } | |
7c673cae FG |
99 | |
100 | void MDSMonitor::update_from_paxos(bool *need_bootstrap) | |
101 | { | |
102 | version_t version = get_last_committed(); | |
28e407b8 | 103 | if (version == get_fsmap().epoch) |
7c673cae FG |
104 | return; |
105 | ||
106 | dout(10) << __func__ << " version " << version | |
28e407b8 AA |
107 | << ", my e " << get_fsmap().epoch << dendl; |
108 | assert(version > get_fsmap().epoch); | |
7c673cae | 109 | |
224ce89b WB |
110 | load_health(); |
111 | ||
7c673cae FG |
112 | // read and decode |
113 | bufferlist fsmap_bl; | |
114 | fsmap_bl.clear(); | |
115 | int err = get_version(version, fsmap_bl); | |
116 | assert(err == 0); | |
117 | ||
118 | assert(fsmap_bl.length() > 0); | |
119 | dout(10) << __func__ << " got " << version << dendl; | |
28e407b8 | 120 | PaxosFSMap::decode(fsmap_bl); |
7c673cae FG |
121 | |
122 | // new map | |
123 | dout(4) << "new map" << dendl; | |
28e407b8 | 124 | print_map(get_fsmap(), 0); |
7c673cae | 125 | if (!g_conf->mon_mds_skip_sanity) { |
28e407b8 | 126 | get_fsmap().sanity(); |
7c673cae FG |
127 | } |
128 | ||
129 | check_subs(); | |
130 | update_logger(); | |
131 | } | |
132 | ||
133 | void MDSMonitor::init() | |
134 | { | |
135 | (void)load_metadata(pending_metadata); | |
136 | } | |
137 | ||
138 | void MDSMonitor::create_pending() | |
139 | { | |
28e407b8 | 140 | auto &fsmap = PaxosFSMap::create_pending(); |
7c673cae | 141 | |
3efd9988 | 142 | if (mon->osdmon()->is_readable()) { |
28e407b8 AA |
143 | const auto &osdmap = mon->osdmon()->osdmap; |
144 | fsmap.sanitize([&osdmap](int64_t pool){return osdmap.have_pg_pool(pool);}); | |
3efd9988 FG |
145 | } |
146 | ||
28e407b8 | 147 | dout(10) << "create_pending e" << fsmap.epoch << dendl; |
7c673cae FG |
148 | } |
149 | ||
150 | void MDSMonitor::encode_pending(MonitorDBStore::TransactionRef t) | |
151 | { | |
28e407b8 AA |
152 | auto &pending = get_pending_fsmap_writeable(); |
153 | auto &epoch = pending.epoch; | |
7c673cae | 154 | |
28e407b8 | 155 | dout(10) << "encode_pending e" << epoch << dendl; |
7c673cae FG |
156 | |
157 | // print map iff 'debug mon = 30' or higher | |
28e407b8 | 158 | print_map(get_pending_fsmap(), 30); |
7c673cae | 159 | if (!g_conf->mon_mds_skip_sanity) { |
28e407b8 | 160 | pending.sanity(); |
7c673cae FG |
161 | } |
162 | ||
163 | // Set 'modified' on maps modified this epoch | |
28e407b8 AA |
164 | for (auto &p : pending.filesystems) { |
165 | if (p.second->mds_map.epoch == epoch) { | |
166 | p.second->mds_map.modified = ceph_clock_now(); | |
7c673cae FG |
167 | } |
168 | } | |
169 | ||
170 | // apply to paxos | |
28e407b8 AA |
171 | assert(get_last_committed() + 1 == pending.epoch); |
172 | bufferlist pending_bl; | |
173 | pending.encode(pending_bl, mon->get_quorum_con_features()); | |
7c673cae FG |
174 | |
175 | /* put everything in the transaction */ | |
28e407b8 AA |
176 | put_version(t, pending.epoch, pending_bl); |
177 | put_last_committed(t, pending.epoch); | |
7c673cae FG |
178 | |
179 | // Encode MDSHealth data | |
180 | for (std::map<uint64_t, MDSHealth>::iterator i = pending_daemon_health.begin(); | |
181 | i != pending_daemon_health.end(); ++i) { | |
182 | bufferlist bl; | |
183 | i->second.encode(bl); | |
184 | t->put(MDS_HEALTH_PREFIX, stringify(i->first), bl); | |
185 | } | |
186 | ||
187 | for (std::set<uint64_t>::iterator i = pending_daemon_health_rm.begin(); | |
188 | i != pending_daemon_health_rm.end(); ++i) { | |
189 | t->erase(MDS_HEALTH_PREFIX, stringify(*i)); | |
190 | } | |
191 | pending_daemon_health_rm.clear(); | |
1adf2230 | 192 | remove_from_metadata(pending, t); |
224ce89b WB |
193 | |
194 | // health | |
195 | health_check_map_t new_checks; | |
28e407b8 | 196 | const auto &info_map = pending.get_mds_info(); |
224ce89b WB |
197 | for (const auto &i : info_map) { |
198 | const auto &gid = i.first; | |
199 | const auto &info = i.second; | |
200 | if (pending_daemon_health_rm.count(gid)) { | |
201 | continue; | |
202 | } | |
203 | MDSHealth health; | |
204 | auto p = pending_daemon_health.find(gid); | |
205 | if (p != pending_daemon_health.end()) { | |
206 | health = p->second; | |
207 | } else { | |
208 | bufferlist bl; | |
209 | mon->store->get(MDS_HEALTH_PREFIX, stringify(gid), bl); | |
210 | if (!bl.length()) { | |
211 | derr << "Missing health data for MDS " << gid << dendl; | |
212 | continue; | |
213 | } | |
214 | bufferlist::iterator bl_i = bl.begin(); | |
215 | health.decode(bl_i); | |
216 | } | |
217 | for (const auto &metric : health.metrics) { | |
d2e6a577 | 218 | const int rank = info.rank; |
224ce89b WB |
219 | health_check_t *check = &new_checks.get_or_add( |
220 | mds_metric_name(metric.type), | |
221 | metric.sev, | |
222 | mds_metric_summary(metric.type)); | |
223 | ostringstream ss; | |
224 | ss << "mds" << info.name << "(mds." << rank << "): " << metric.message; | |
28e407b8 AA |
225 | bool first = true; |
226 | for (auto &p : metric.metadata) { | |
227 | if (first) { | |
228 | ss << " "; | |
229 | } else { | |
224ce89b | 230 | ss << ", "; |
28e407b8 AA |
231 | } |
232 | ss << p.first << ": " << p.second; | |
233 | first = false; | |
224ce89b WB |
234 | } |
235 | check->detail.push_back(ss.str()); | |
236 | } | |
237 | } | |
28e407b8 | 238 | pending.get_health_checks(&new_checks); |
224ce89b WB |
239 | for (auto& p : new_checks.checks) { |
240 | p.second.summary = boost::regex_replace( | |
241 | p.second.summary, | |
242 | boost::regex("%num%"), | |
243 | stringify(p.second.detail.size())); | |
244 | p.second.summary = boost::regex_replace( | |
245 | p.second.summary, | |
246 | boost::regex("%plurals%"), | |
247 | p.second.detail.size() > 1 ? "s" : ""); | |
248 | p.second.summary = boost::regex_replace( | |
249 | p.second.summary, | |
250 | boost::regex("%isorare%"), | |
251 | p.second.detail.size() > 1 ? "are" : "is"); | |
181888fb FG |
252 | p.second.summary = boost::regex_replace( |
253 | p.second.summary, | |
254 | boost::regex("%hasorhave%"), | |
255 | p.second.detail.size() > 1 ? "have" : "has"); | |
224ce89b WB |
256 | } |
257 | encode_health(new_checks, t); | |
7c673cae FG |
258 | } |
259 | ||
260 | version_t MDSMonitor::get_trim_to() | |
261 | { | |
262 | version_t floor = 0; | |
263 | if (g_conf->mon_mds_force_trim_to > 0 && | |
264 | g_conf->mon_mds_force_trim_to < (int)get_last_committed()) { | |
265 | floor = g_conf->mon_mds_force_trim_to; | |
266 | dout(10) << __func__ << " explicit mon_mds_force_trim_to = " | |
267 | << floor << dendl; | |
268 | } | |
269 | ||
270 | unsigned max = g_conf->mon_max_mdsmap_epochs; | |
271 | version_t last = get_last_committed(); | |
272 | ||
273 | if (last - get_first_committed() > max && floor < last - max) | |
274 | return last - max; | |
275 | return floor; | |
276 | } | |
277 | ||
278 | void MDSMonitor::update_logger() | |
279 | { | |
280 | dout(10) << "update_logger" << dendl; | |
281 | ||
28e407b8 AA |
282 | const auto &fsmap = get_fsmap(); |
283 | ||
7c673cae FG |
284 | uint64_t up = 0; |
285 | uint64_t in = 0; | |
286 | uint64_t failed = 0; | |
287 | for (const auto &i : fsmap.filesystems) { | |
288 | const MDSMap &mds_map = i.second->mds_map; | |
289 | ||
290 | up += mds_map.get_num_up_mds(); | |
291 | in += mds_map.get_num_in_mds(); | |
292 | failed += mds_map.get_num_failed_mds(); | |
293 | } | |
294 | mon->cluster_logger->set(l_cluster_num_mds_up, up); | |
295 | mon->cluster_logger->set(l_cluster_num_mds_in, in); | |
296 | mon->cluster_logger->set(l_cluster_num_mds_failed, failed); | |
297 | mon->cluster_logger->set(l_cluster_mds_epoch, fsmap.get_epoch()); | |
298 | } | |
299 | ||
300 | bool MDSMonitor::preprocess_query(MonOpRequestRef op) | |
301 | { | |
302 | op->mark_mdsmon_event(__func__); | |
303 | PaxosServiceMessage *m = static_cast<PaxosServiceMessage*>(op->get_req()); | |
304 | dout(10) << "preprocess_query " << *m << " from " << m->get_orig_source_inst() << dendl; | |
305 | ||
306 | switch (m->get_type()) { | |
307 | ||
308 | case MSG_MDS_BEACON: | |
309 | return preprocess_beacon(op); | |
310 | ||
311 | case MSG_MON_COMMAND: | |
312 | return preprocess_command(op); | |
313 | ||
314 | case MSG_MDS_OFFLOAD_TARGETS: | |
315 | return preprocess_offload_targets(op); | |
316 | ||
317 | default: | |
318 | ceph_abort(); | |
319 | return true; | |
320 | } | |
321 | } | |
322 | ||
323 | void MDSMonitor::_note_beacon(MMDSBeacon *m) | |
324 | { | |
325 | mds_gid_t gid = mds_gid_t(m->get_global_id()); | |
326 | version_t seq = m->get_seq(); | |
327 | ||
328 | dout(15) << "_note_beacon " << *m << " noting time" << dendl; | |
1adf2230 AA |
329 | auto &beacon = last_beacon[gid]; |
330 | beacon.stamp = mono_clock::now(); | |
331 | beacon.seq = seq; | |
7c673cae FG |
332 | } |
333 | ||
334 | bool MDSMonitor::preprocess_beacon(MonOpRequestRef op) | |
335 | { | |
336 | op->mark_mdsmon_event(__func__); | |
337 | MMDSBeacon *m = static_cast<MMDSBeacon*>(op->get_req()); | |
338 | MDSMap::DaemonState state = m->get_state(); | |
339 | mds_gid_t gid = m->get_global_id(); | |
340 | version_t seq = m->get_seq(); | |
341 | MDSMap::mds_info_t info; | |
342 | epoch_t effective_epoch = 0; | |
343 | ||
1adf2230 | 344 | const auto &fsmap = get_fsmap(); |
28e407b8 | 345 | |
7c673cae FG |
346 | // check privileges, ignore if fails |
347 | MonSession *session = m->get_session(); | |
348 | assert(session); | |
349 | if (!session->is_capable("mds", MON_CAP_X)) { | |
350 | dout(0) << "preprocess_beacon got MMDSBeacon from entity with insufficient privileges " | |
351 | << session->caps << dendl; | |
352 | goto ignore; | |
353 | } | |
354 | ||
355 | if (m->get_fsid() != mon->monmap->fsid) { | |
356 | dout(0) << "preprocess_beacon on fsid " << m->get_fsid() << " != " << mon->monmap->fsid << dendl; | |
357 | goto ignore; | |
358 | } | |
359 | ||
360 | dout(12) << "preprocess_beacon " << *m | |
361 | << " from " << m->get_orig_source_inst() | |
362 | << " " << m->get_compat() | |
363 | << dendl; | |
364 | ||
365 | // make sure the address has a port | |
366 | if (m->get_orig_source_addr().get_port() == 0) { | |
367 | dout(1) << " ignoring boot message without a port" << dendl; | |
368 | goto ignore; | |
369 | } | |
370 | ||
371 | // check compat | |
372 | if (!m->get_compat().writeable(fsmap.compat)) { | |
373 | dout(1) << " mds " << m->get_source_inst() << " can't write to fsmap " << fsmap.compat << dendl; | |
374 | goto ignore; | |
375 | } | |
376 | ||
377 | // fw to leader? | |
28e407b8 | 378 | if (!is_leader()) |
7c673cae FG |
379 | return false; |
380 | ||
381 | // booted, but not in map? | |
28e407b8 | 382 | if (!fsmap.gid_exists(gid)) { |
7c673cae FG |
383 | if (state != MDSMap::STATE_BOOT) { |
384 | dout(7) << "mds_beacon " << *m << " is not in fsmap (state " | |
385 | << ceph_mds_state_name(state) << ")" << dendl; | |
386 | ||
1adf2230 AA |
387 | /* We can't send an MDSMap this MDS was a part of because we no longer |
388 | * know which FS it was part of. Nor does this matter. Sending an empty | |
389 | * MDSMap is sufficient for getting the MDS to respawn. | |
390 | */ | |
7c673cae FG |
391 | MDSMap null_map; |
392 | null_map.epoch = fsmap.epoch; | |
393 | null_map.compat = fsmap.compat; | |
394 | mon->send_reply(op, new MMDSMap(mon->monmap->fsid, &null_map)); | |
395 | return true; | |
396 | } else { | |
397 | return false; // not booted yet. | |
398 | } | |
399 | } | |
400 | dout(10) << __func__ << ": GID exists in map: " << gid << dendl; | |
28e407b8 | 401 | info = fsmap.get_info_gid(gid); |
7c673cae FG |
402 | |
403 | // old seq? | |
404 | if (info.state_seq > seq) { | |
405 | dout(7) << "mds_beacon " << *m << " has old seq, ignoring" << dendl; | |
406 | goto ignore; | |
407 | } | |
408 | ||
409 | // Work out the latest epoch that this daemon should have seen | |
410 | { | |
28e407b8 | 411 | fs_cluster_id_t fscid = fsmap.mds_roles.at(gid); |
7c673cae | 412 | if (fscid == FS_CLUSTER_ID_NONE) { |
28e407b8 | 413 | effective_epoch = fsmap.standby_epochs.at(gid); |
7c673cae | 414 | } else { |
28e407b8 | 415 | effective_epoch = fsmap.get_filesystem(fscid)->mds_map.epoch; |
7c673cae FG |
416 | } |
417 | if (effective_epoch != m->get_last_epoch_seen()) { | |
418 | dout(10) << "mds_beacon " << *m | |
419 | << " ignoring requested state, because mds hasn't seen latest map" << dendl; | |
420 | goto reply; | |
421 | } | |
422 | } | |
423 | ||
424 | if (info.laggy()) { | |
425 | _note_beacon(m); | |
426 | return false; // no longer laggy, need to update map. | |
427 | } | |
428 | if (state == MDSMap::STATE_BOOT) { | |
429 | // ignore, already booted. | |
430 | goto ignore; | |
431 | } | |
432 | // is there a state change here? | |
433 | if (info.state != state) { | |
434 | // legal state change? | |
435 | if ((info.state == MDSMap::STATE_STANDBY || | |
436 | info.state == MDSMap::STATE_STANDBY_REPLAY) && state > 0) { | |
437 | dout(10) << "mds_beacon mds can't activate itself (" << ceph_mds_state_name(info.state) | |
438 | << " -> " << ceph_mds_state_name(state) << ")" << dendl; | |
439 | goto reply; | |
440 | } | |
441 | ||
442 | if ((state == MDSMap::STATE_STANDBY || state == MDSMap::STATE_STANDBY_REPLAY) | |
443 | && info.rank != MDS_RANK_NONE) | |
444 | { | |
445 | dout(4) << "mds_beacon MDS can't go back into standby after taking rank: " | |
446 | "held rank " << info.rank << " while requesting state " | |
447 | << ceph_mds_state_name(state) << dendl; | |
448 | goto reply; | |
449 | } | |
450 | ||
451 | _note_beacon(m); | |
452 | return false; | |
453 | } | |
454 | ||
455 | // Comparing known daemon health with m->get_health() | |
456 | // and return false (i.e. require proposal) if they | |
457 | // do not match, to update our stored | |
458 | if (!(pending_daemon_health[gid] == m->get_health())) { | |
459 | dout(20) << __func__ << " health metrics for gid " << gid << " were updated" << dendl; | |
460 | _note_beacon(m); | |
461 | return false; | |
462 | } | |
463 | ||
464 | reply: | |
465 | // note time and reply | |
466 | assert(effective_epoch > 0); | |
467 | _note_beacon(m); | |
468 | mon->send_reply(op, | |
469 | new MMDSBeacon(mon->monmap->fsid, m->get_global_id(), m->get_name(), | |
470 | effective_epoch, state, seq, | |
471 | CEPH_FEATURES_SUPPORTED_DEFAULT)); | |
472 | return true; | |
473 | ||
474 | ignore: | |
475 | // I won't reply this beacon, drop it. | |
476 | mon->no_reply(op); | |
477 | return true; | |
478 | } | |
479 | ||
480 | bool MDSMonitor::preprocess_offload_targets(MonOpRequestRef op) | |
481 | { | |
482 | op->mark_mdsmon_event(__func__); | |
483 | MMDSLoadTargets *m = static_cast<MMDSLoadTargets*>(op->get_req()); | |
484 | dout(10) << "preprocess_offload_targets " << *m << " from " << m->get_orig_source() << dendl; | |
28e407b8 | 485 | |
1adf2230 | 486 | const auto &fsmap = get_fsmap(); |
7c673cae FG |
487 | |
488 | // check privileges, ignore message if fails | |
489 | MonSession *session = m->get_session(); | |
490 | if (!session) | |
1adf2230 | 491 | goto ignore; |
7c673cae FG |
492 | if (!session->is_capable("mds", MON_CAP_X)) { |
493 | dout(0) << "preprocess_offload_targets got MMDSLoadTargets from entity with insufficient caps " | |
494 | << session->caps << dendl; | |
1adf2230 | 495 | goto ignore; |
7c673cae FG |
496 | } |
497 | ||
498 | if (fsmap.gid_exists(m->global_id) && | |
499 | m->targets == fsmap.get_info_gid(m->global_id).export_targets) | |
1adf2230 | 500 | goto ignore; |
7c673cae FG |
501 | |
502 | return false; | |
503 | ||
1adf2230 AA |
504 | ignore: |
505 | mon->no_reply(op); | |
7c673cae FG |
506 | return true; |
507 | } | |
508 | ||
509 | ||
510 | bool MDSMonitor::prepare_update(MonOpRequestRef op) | |
511 | { | |
512 | op->mark_mdsmon_event(__func__); | |
513 | PaxosServiceMessage *m = static_cast<PaxosServiceMessage*>(op->get_req()); | |
514 | dout(7) << "prepare_update " << *m << dendl; | |
515 | ||
516 | switch (m->get_type()) { | |
517 | ||
518 | case MSG_MDS_BEACON: | |
519 | return prepare_beacon(op); | |
520 | ||
521 | case MSG_MON_COMMAND: | |
522 | return prepare_command(op); | |
523 | ||
524 | case MSG_MDS_OFFLOAD_TARGETS: | |
525 | return prepare_offload_targets(op); | |
526 | ||
527 | default: | |
528 | ceph_abort(); | |
529 | } | |
530 | ||
531 | return true; | |
532 | } | |
533 | ||
534 | bool MDSMonitor::prepare_beacon(MonOpRequestRef op) | |
535 | { | |
536 | op->mark_mdsmon_event(__func__); | |
537 | MMDSBeacon *m = static_cast<MMDSBeacon*>(op->get_req()); | |
538 | // -- this is an update -- | |
539 | dout(12) << "prepare_beacon " << *m << " from " << m->get_orig_source_inst() << dendl; | |
540 | entity_addr_t addr = m->get_orig_source_inst().addr; | |
541 | mds_gid_t gid = m->get_global_id(); | |
542 | MDSMap::DaemonState state = m->get_state(); | |
543 | version_t seq = m->get_seq(); | |
544 | ||
28e407b8 AA |
545 | auto &pending = get_pending_fsmap_writeable(); |
546 | ||
7c673cae FG |
547 | dout(20) << __func__ << " got health from gid " << gid << " with " << m->get_health().metrics.size() << " metrics." << dendl; |
548 | ||
549 | // Calculate deltas of health metrics created and removed | |
550 | // Do this by type rather than MDSHealthMetric equality, because messages can | |
551 | // change a lot when they include e.g. a number of items. | |
552 | const auto &old_health = pending_daemon_health[gid].metrics; | |
553 | const auto &new_health = m->get_health().metrics; | |
554 | ||
555 | std::set<mds_metric_t> old_types; | |
556 | for (const auto &i : old_health) { | |
557 | old_types.insert(i.type); | |
558 | } | |
559 | ||
560 | std::set<mds_metric_t> new_types; | |
561 | for (const auto &i : new_health) { | |
562 | new_types.insert(i.type); | |
563 | } | |
564 | ||
565 | for (const auto &new_metric: new_health) { | |
566 | if (old_types.count(new_metric.type) == 0) { | |
28e407b8 AA |
567 | dout(10) << "MDS health message (" << m->get_orig_source_inst().name |
568 | << "): " << new_metric.sev << " " << new_metric.message << dendl; | |
7c673cae FG |
569 | } |
570 | } | |
571 | ||
572 | // Log the disappearance of health messages at INFO | |
573 | for (const auto &old_metric : old_health) { | |
574 | if (new_types.count(old_metric.type) == 0) { | |
575 | mon->clog->info() << "MDS health message cleared (" | |
576 | << m->get_orig_source_inst().name << "): " << old_metric.message; | |
577 | } | |
578 | } | |
579 | ||
580 | // Store health | |
581 | pending_daemon_health[gid] = m->get_health(); | |
582 | ||
583 | // boot? | |
584 | if (state == MDSMap::STATE_BOOT) { | |
585 | // zap previous instance of this name? | |
586 | if (g_conf->mds_enforce_unique_name) { | |
587 | bool failed_mds = false; | |
28e407b8 | 588 | while (mds_gid_t existing = pending.find_mds_gid_by_name(m->get_name())) { |
7c673cae FG |
589 | if (!mon->osdmon()->is_writeable()) { |
590 | mon->osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
591 | return false; | |
592 | } | |
d2e6a577 | 593 | const MDSMap::mds_info_t &existing_info = |
28e407b8 | 594 | pending.get_info_gid(existing); |
d2e6a577 | 595 | mon->clog->info() << existing_info.human_name() << " restarted"; |
1adf2230 | 596 | fail_mds_gid(pending, existing); |
7c673cae FG |
597 | failed_mds = true; |
598 | } | |
599 | if (failed_mds) { | |
600 | assert(mon->osdmon()->is_writeable()); | |
601 | request_proposal(mon->osdmon()); | |
602 | } | |
603 | } | |
604 | ||
605 | // Add this daemon to the map | |
28e407b8 | 606 | if (pending.mds_roles.count(gid) == 0) { |
7c673cae FG |
607 | MDSMap::mds_info_t new_info; |
608 | new_info.global_id = gid; | |
609 | new_info.name = m->get_name(); | |
610 | new_info.addr = addr; | |
611 | new_info.mds_features = m->get_mds_features(); | |
612 | new_info.state = MDSMap::STATE_STANDBY; | |
613 | new_info.state_seq = seq; | |
614 | new_info.standby_for_rank = m->get_standby_for_rank(); | |
615 | new_info.standby_for_name = m->get_standby_for_name(); | |
616 | new_info.standby_for_fscid = m->get_standby_for_fscid(); | |
617 | new_info.standby_replay = m->get_standby_replay(); | |
28e407b8 | 618 | pending.insert(new_info); |
7c673cae FG |
619 | } |
620 | ||
621 | // Resolve standby_for_name to a rank | |
28e407b8 | 622 | const MDSMap::mds_info_t &info = pending.get_info_gid(gid); |
7c673cae | 623 | if (!info.standby_for_name.empty()) { |
28e407b8 | 624 | const MDSMap::mds_info_t *leaderinfo = pending.find_by_name( |
7c673cae FG |
625 | info.standby_for_name); |
626 | if (leaderinfo && (leaderinfo->rank >= 0)) { | |
28e407b8 | 627 | const auto &fscid = pending.mds_roles.at(leaderinfo->global_id); |
7c673cae | 628 | |
28e407b8 | 629 | pending.modify_daemon(gid, [fscid, leaderinfo]( |
7c673cae FG |
630 | MDSMap::mds_info_t *info) { |
631 | info->standby_for_rank = leaderinfo->rank; | |
632 | info->standby_for_fscid = fscid; | |
633 | }); | |
634 | } | |
635 | } | |
636 | ||
637 | // initialize the beacon timer | |
1adf2230 AA |
638 | auto &beacon = last_beacon[gid]; |
639 | beacon.stamp = mono_clock::now(); | |
640 | beacon.seq = seq; | |
7c673cae FG |
641 | |
642 | // new incompat? | |
28e407b8 AA |
643 | if (!pending.compat.writeable(m->get_compat())) { |
644 | dout(10) << " fsmap " << pending.compat | |
7c673cae FG |
645 | << " can't write to new mds' " << m->get_compat() |
646 | << ", updating fsmap and killing old mds's" | |
647 | << dendl; | |
28e407b8 | 648 | pending.update_compat(m->get_compat()); |
7c673cae FG |
649 | } |
650 | ||
651 | update_metadata(m->get_global_id(), m->get_sys_info()); | |
652 | } else { | |
653 | // state update | |
28e407b8 | 654 | const MDSMap::mds_info_t &info = pending.get_info_gid(gid); |
7c673cae FG |
655 | // Old MDS daemons don't mention that they're standby replay until |
656 | // after they've sent their boot beacon, so update this field. | |
657 | if (info.standby_replay != m->get_standby_replay()) { | |
28e407b8 | 658 | pending.modify_daemon(info.global_id, [&m]( |
7c673cae FG |
659 | MDSMap::mds_info_t *i) |
660 | { | |
661 | i->standby_replay = m->get_standby_replay(); | |
662 | }); | |
663 | } | |
664 | ||
665 | if (info.state == MDSMap::STATE_STOPPING && state != MDSMap::STATE_STOPPED ) { | |
666 | // we can't transition to any other states from STOPPING | |
667 | dout(0) << "got beacon for MDS in STATE_STOPPING, ignoring requested state change" | |
668 | << dendl; | |
669 | _note_beacon(m); | |
670 | return true; | |
671 | } | |
672 | ||
673 | if (info.laggy()) { | |
674 | dout(10) << "prepare_beacon clearing laggy flag on " << addr << dendl; | |
28e407b8 | 675 | pending.modify_daemon(info.global_id, [](MDSMap::mds_info_t *info) |
7c673cae FG |
676 | { |
677 | info->clear_laggy(); | |
678 | } | |
679 | ); | |
680 | } | |
681 | ||
682 | dout(10) << "prepare_beacon mds." << info.rank | |
683 | << " " << ceph_mds_state_name(info.state) | |
684 | << " -> " << ceph_mds_state_name(state) | |
685 | << " standby_for_rank=" << m->get_standby_for_rank() | |
686 | << dendl; | |
687 | if (state == MDSMap::STATE_STOPPED) { | |
28e407b8 AA |
688 | const auto fscid = pending.mds_roles.at(gid); |
689 | const auto &fs = pending.get_filesystem(fscid); | |
181888fb | 690 | |
d2e6a577 FG |
691 | mon->clog->info() << info.human_name() << " finished " |
692 | << "deactivating rank " << info.rank << " in filesystem " | |
693 | << fs->mds_map.fs_name << " (now has " | |
181888fb | 694 | << fs->mds_map.get_num_in_mds() - 1 << " ranks)"; |
d2e6a577 | 695 | |
28e407b8 | 696 | auto erased = pending.stop(gid); |
7c673cae FG |
697 | erased.push_back(gid); |
698 | ||
699 | for (const auto &erased_gid : erased) { | |
700 | last_beacon.erase(erased_gid); | |
701 | if (pending_daemon_health.count(erased_gid)) { | |
702 | pending_daemon_health.erase(erased_gid); | |
703 | pending_daemon_health_rm.insert(erased_gid); | |
704 | } | |
705 | } | |
d2e6a577 FG |
706 | |
707 | ||
7c673cae FG |
708 | } else if (state == MDSMap::STATE_DAMAGED) { |
709 | if (!mon->osdmon()->is_writeable()) { | |
710 | dout(4) << __func__ << ": DAMAGED from rank " << info.rank | |
711 | << " waiting for osdmon writeable to blacklist it" << dendl; | |
712 | mon->osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
713 | return false; | |
714 | } | |
715 | ||
716 | // Record this MDS rank as damaged, so that other daemons | |
717 | // won't try to run it. | |
718 | dout(4) << __func__ << ": marking rank " | |
719 | << info.rank << " damaged" << dendl; | |
720 | ||
721 | utime_t until = ceph_clock_now(); | |
b32b8144 | 722 | until += g_conf->get_val<double>("mon_mds_blacklist_interval"); |
7c673cae FG |
723 | const auto blacklist_epoch = mon->osdmon()->blacklist(info.addr, until); |
724 | request_proposal(mon->osdmon()); | |
28e407b8 | 725 | pending.damaged(gid, blacklist_epoch); |
7c673cae FG |
726 | last_beacon.erase(gid); |
727 | ||
728 | // Respond to MDS, so that it knows it can continue to shut down | |
729 | mon->send_reply(op, | |
730 | new MMDSBeacon( | |
731 | mon->monmap->fsid, m->get_global_id(), | |
28e407b8 | 732 | m->get_name(), pending.get_epoch(), state, seq, |
7c673cae FG |
733 | CEPH_FEATURES_SUPPORTED_DEFAULT)); |
734 | } else if (state == MDSMap::STATE_DNE) { | |
735 | if (!mon->osdmon()->is_writeable()) { | |
736 | dout(4) << __func__ << ": DNE from rank " << info.rank | |
737 | << " waiting for osdmon writeable to blacklist it" << dendl; | |
738 | mon->osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
739 | return false; | |
740 | } | |
741 | ||
1adf2230 | 742 | fail_mds_gid(pending, gid); |
7c673cae FG |
743 | assert(mon->osdmon()->is_writeable()); |
744 | request_proposal(mon->osdmon()); | |
745 | ||
746 | // Respond to MDS, so that it knows it can continue to shut down | |
747 | mon->send_reply(op, | |
748 | new MMDSBeacon( | |
749 | mon->monmap->fsid, m->get_global_id(), | |
28e407b8 | 750 | m->get_name(), pending.get_epoch(), state, seq, |
7c673cae FG |
751 | CEPH_FEATURES_SUPPORTED_DEFAULT)); |
752 | } else if (info.state == MDSMap::STATE_STANDBY && state != info.state) { | |
753 | // Standby daemons should never modify their own | |
754 | // state. Reject any attempts to do so. | |
755 | derr << "standby " << gid << " attempted to change state to " | |
756 | << ceph_mds_state_name(state) << ", rejecting" << dendl; | |
757 | return true; | |
758 | } else if (info.state != MDSMap::STATE_STANDBY && state != info.state && | |
759 | !MDSMap::state_transition_valid(info.state, state)) { | |
760 | // Validate state transitions for daemons that hold a rank | |
761 | derr << "daemon " << gid << " (rank " << info.rank << ") " | |
762 | << "reported invalid state transition " | |
763 | << ceph_mds_state_name(info.state) << " -> " | |
764 | << ceph_mds_state_name(state) << dendl; | |
765 | return true; | |
766 | } else { | |
b32b8144 | 767 | if (info.state != MDSMap::STATE_ACTIVE && state == MDSMap::STATE_ACTIVE) { |
28e407b8 AA |
768 | const auto &fscid = pending.mds_roles.at(gid); |
769 | const auto &fs = pending.get_filesystem(fscid); | |
d2e6a577 FG |
770 | mon->clog->info() << info.human_name() << " is now active in " |
771 | << "filesystem " << fs->mds_map.fs_name << " as rank " | |
772 | << info.rank; | |
773 | } | |
b32b8144 FG |
774 | |
775 | // Made it through special cases and validations, record the | |
776 | // daemon's reported state to the FSMap. | |
28e407b8 | 777 | pending.modify_daemon(gid, [state, seq](MDSMap::mds_info_t *info) { |
b32b8144 FG |
778 | info->state = state; |
779 | info->state_seq = seq; | |
780 | }); | |
7c673cae FG |
781 | } |
782 | } | |
783 | ||
784 | dout(7) << "prepare_beacon pending map now:" << dendl; | |
28e407b8 | 785 | print_map(pending); |
7c673cae FG |
786 | |
787 | wait_for_finished_proposal(op, new FunctionContext([op, this](int r){ | |
788 | if (r >= 0) | |
789 | _updated(op); // success | |
790 | else if (r == -ECANCELED) { | |
791 | mon->no_reply(op); | |
792 | } else { | |
793 | dispatch(op); // try again | |
794 | } | |
795 | })); | |
796 | ||
797 | return true; | |
798 | } | |
799 | ||
800 | bool MDSMonitor::prepare_offload_targets(MonOpRequestRef op) | |
801 | { | |
28e407b8 AA |
802 | auto &pending = get_pending_fsmap_writeable(); |
803 | ||
7c673cae FG |
804 | op->mark_mdsmon_event(__func__); |
805 | MMDSLoadTargets *m = static_cast<MMDSLoadTargets*>(op->get_req()); | |
806 | mds_gid_t gid = m->global_id; | |
28e407b8 | 807 | if (pending.gid_has_rank(gid)) { |
7c673cae | 808 | dout(10) << "prepare_offload_targets " << gid << " " << m->targets << dendl; |
28e407b8 | 809 | pending.update_export_targets(gid, m->targets); |
7c673cae FG |
810 | } else { |
811 | dout(10) << "prepare_offload_targets " << gid << " not in map" << dendl; | |
812 | } | |
813 | return true; | |
814 | } | |
815 | ||
816 | bool MDSMonitor::should_propose(double& delay) | |
817 | { | |
818 | // delegate to PaxosService to assess whether we should propose | |
819 | return PaxosService::should_propose(delay); | |
820 | } | |
821 | ||
822 | void MDSMonitor::_updated(MonOpRequestRef op) | |
823 | { | |
28e407b8 | 824 | const auto &fsmap = get_fsmap(); |
7c673cae FG |
825 | op->mark_mdsmon_event(__func__); |
826 | MMDSBeacon *m = static_cast<MMDSBeacon*>(op->get_req()); | |
827 | dout(10) << "_updated " << m->get_orig_source() << " " << *m << dendl; | |
d2e6a577 | 828 | mon->clog->debug() << m->get_orig_source_inst() << " " |
7c673cae FG |
829 | << ceph_mds_state_name(m->get_state()); |
830 | ||
831 | if (m->get_state() == MDSMap::STATE_STOPPED) { | |
832 | // send the map manually (they're out of the map, so they won't get it automatic) | |
833 | MDSMap null_map; | |
834 | null_map.epoch = fsmap.epoch; | |
835 | null_map.compat = fsmap.compat; | |
836 | mon->send_reply(op, new MMDSMap(mon->monmap->fsid, &null_map)); | |
837 | } else { | |
838 | mon->send_reply(op, new MMDSBeacon(mon->monmap->fsid, | |
839 | m->get_global_id(), | |
840 | m->get_name(), | |
841 | fsmap.get_epoch(), | |
842 | m->get_state(), | |
843 | m->get_seq(), | |
844 | CEPH_FEATURES_SUPPORTED_DEFAULT)); | |
845 | } | |
846 | } | |
847 | ||
848 | void MDSMonitor::on_active() | |
849 | { | |
850 | tick(); | |
851 | update_logger(); | |
852 | ||
28e407b8 AA |
853 | if (is_leader()) { |
854 | mon->clog->debug() << "fsmap " << get_fsmap(); | |
224ce89b | 855 | } |
7c673cae FG |
856 | } |
857 | ||
858 | void MDSMonitor::get_health(list<pair<health_status_t, string> >& summary, | |
859 | list<pair<health_status_t, string> > *detail, | |
860 | CephContext* cct) const | |
861 | { | |
28e407b8 AA |
862 | const auto &fsmap = get_fsmap(); |
863 | ||
7c673cae FG |
864 | fsmap.get_health(summary, detail); |
865 | ||
866 | // For each MDS GID... | |
28e407b8 | 867 | const auto &info_map = fsmap.get_mds_info(); |
7c673cae FG |
868 | for (const auto &i : info_map) { |
869 | const auto &gid = i.first; | |
870 | const auto &info = i.second; | |
871 | ||
872 | // Decode MDSHealth | |
873 | bufferlist bl; | |
874 | mon->store->get(MDS_HEALTH_PREFIX, stringify(gid), bl); | |
875 | if (!bl.length()) { | |
876 | derr << "Missing health data for MDS " << gid << dendl; | |
877 | continue; | |
878 | } | |
879 | MDSHealth health; | |
880 | bufferlist::iterator bl_i = bl.begin(); | |
881 | health.decode(bl_i); | |
882 | ||
883 | for (const auto &metric : health.metrics) { | |
d2e6a577 | 884 | const int rank = info.rank; |
7c673cae FG |
885 | std::ostringstream message; |
886 | message << "mds" << rank << ": " << metric.message; | |
887 | summary.push_back(std::make_pair(metric.sev, message.str())); | |
888 | ||
889 | if (detail) { | |
890 | // There is no way for us to clealy associate detail entries with summary entries (#7192), so | |
891 | // we duplicate the summary message in the detail string and tag the metadata on. | |
892 | std::ostringstream detail_message; | |
893 | detail_message << message.str(); | |
894 | if (metric.metadata.size()) { | |
895 | detail_message << "("; | |
896 | auto k = metric.metadata.begin(); | |
897 | while (k != metric.metadata.end()) { | |
898 | detail_message << k->first << ": " << k->second; | |
899 | if (boost::next(k) != metric.metadata.end()) { | |
900 | detail_message << ", "; | |
901 | } | |
902 | ++k; | |
903 | } | |
904 | detail_message << ")"; | |
905 | } | |
906 | detail->push_back(std::make_pair(metric.sev, detail_message.str())); | |
907 | } | |
908 | } | |
909 | } | |
910 | } | |
911 | ||
912 | void MDSMonitor::dump_info(Formatter *f) | |
913 | { | |
914 | f->open_object_section("fsmap"); | |
28e407b8 | 915 | get_fsmap().dump(f); |
7c673cae FG |
916 | f->close_section(); |
917 | ||
918 | f->dump_unsigned("mdsmap_first_committed", get_first_committed()); | |
919 | f->dump_unsigned("mdsmap_last_committed", get_last_committed()); | |
920 | } | |
921 | ||
922 | bool MDSMonitor::preprocess_command(MonOpRequestRef op) | |
923 | { | |
924 | op->mark_mdsmon_event(__func__); | |
925 | MMonCommand *m = static_cast<MMonCommand*>(op->get_req()); | |
926 | int r = -1; | |
927 | bufferlist rdata; | |
928 | stringstream ss, ds; | |
929 | ||
930 | map<string, cmd_vartype> cmdmap; | |
1adf2230 | 931 | const auto &fsmap = get_fsmap(); |
28e407b8 | 932 | |
7c673cae FG |
933 | if (!cmdmap_from_json(m->cmd, &cmdmap, ss)) { |
934 | // ss has reason for failure | |
935 | string rs = ss.str(); | |
936 | mon->reply_command(op, -EINVAL, rs, rdata, get_last_committed()); | |
937 | return true; | |
938 | } | |
939 | ||
940 | string prefix; | |
941 | cmd_getval(g_ceph_context, cmdmap, "prefix", prefix); | |
942 | string format; | |
943 | cmd_getval(g_ceph_context, cmdmap, "format", format, string("plain")); | |
1adf2230 | 944 | std::unique_ptr<Formatter> f(Formatter::create(format)); |
7c673cae FG |
945 | |
946 | MonSession *session = m->get_session(); | |
947 | if (!session) { | |
948 | mon->reply_command(op, -EACCES, "access denied", rdata, get_last_committed()); | |
949 | return true; | |
950 | } | |
951 | ||
952 | if (prefix == "mds stat") { | |
953 | if (f) { | |
954 | f->open_object_section("mds_stat"); | |
955 | dump_info(f.get()); | |
956 | f->close_section(); | |
957 | f->flush(ds); | |
958 | } else { | |
959 | ds << fsmap; | |
960 | } | |
961 | r = 0; | |
962 | } else if (prefix == "mds dump") { | |
963 | int64_t epocharg; | |
964 | epoch_t epoch; | |
965 | ||
28e407b8 AA |
966 | const FSMap *fsmapp = &get_fsmap(); |
967 | FSMap dummy; | |
7c673cae FG |
968 | if (cmd_getval(g_ceph_context, cmdmap, "epoch", epocharg)) { |
969 | epoch = epocharg; | |
970 | bufferlist b; | |
971 | int err = get_version(epoch, b); | |
972 | if (err == -ENOENT) { | |
7c673cae | 973 | r = -ENOENT; |
28e407b8 | 974 | goto out; |
7c673cae FG |
975 | } else { |
976 | assert(err == 0); | |
977 | assert(b.length()); | |
28e407b8 AA |
978 | dummy.decode(b); |
979 | fsmapp = &dummy; | |
7c673cae FG |
980 | } |
981 | } | |
c07f9fc5 | 982 | |
28e407b8 AA |
983 | stringstream ds; |
984 | const MDSMap *mdsmapp = nullptr; | |
985 | MDSMap blank; | |
986 | blank.epoch = fsmapp->epoch; | |
987 | if (fsmapp->legacy_client_fscid != FS_CLUSTER_ID_NONE) { | |
988 | mdsmapp = &fsmapp->filesystems.at(fsmapp->legacy_client_fscid)->mds_map; | |
989 | } else { | |
990 | mdsmapp = ␣ | |
7c673cae | 991 | } |
28e407b8 AA |
992 | if (f != NULL) { |
993 | f->open_object_section("mdsmap"); | |
994 | mdsmapp->dump(f.get()); | |
995 | f->close_section(); | |
996 | f->flush(ds); | |
997 | r = 0; | |
998 | } else { | |
999 | mdsmapp->print(ds); | |
1000 | r = 0; | |
1001 | } | |
1002 | ||
1003 | rdata.append(ds); | |
1004 | ss << "dumped fsmap epoch " << fsmapp->get_epoch(); | |
7c673cae FG |
1005 | } else if (prefix == "fs dump") { |
1006 | int64_t epocharg; | |
1007 | epoch_t epoch; | |
1008 | ||
1adf2230 | 1009 | const FSMap *fsmapp = &fsmap; |
28e407b8 | 1010 | FSMap dummy; |
7c673cae FG |
1011 | if (cmd_getval(g_ceph_context, cmdmap, "epoch", epocharg)) { |
1012 | epoch = epocharg; | |
1013 | bufferlist b; | |
1014 | int err = get_version(epoch, b); | |
1015 | if (err == -ENOENT) { | |
7c673cae | 1016 | r = -ENOENT; |
28e407b8 | 1017 | goto out; |
7c673cae FG |
1018 | } else { |
1019 | assert(err == 0); | |
1020 | assert(b.length()); | |
28e407b8 AA |
1021 | dummy.decode(b); |
1022 | fsmapp = &dummy; | |
7c673cae FG |
1023 | } |
1024 | } | |
c07f9fc5 | 1025 | |
28e407b8 AA |
1026 | stringstream ds; |
1027 | if (f != NULL) { | |
1028 | f->open_object_section("fsmap"); | |
1029 | fsmapp->dump(f.get()); | |
1030 | f->close_section(); | |
1031 | f->flush(ds); | |
1032 | r = 0; | |
1033 | } else { | |
1034 | fsmapp->print(ds); | |
1035 | r = 0; | |
7c673cae | 1036 | } |
28e407b8 AA |
1037 | |
1038 | rdata.append(ds); | |
1039 | ss << "dumped fsmap epoch " << fsmapp->get_epoch(); | |
7c673cae FG |
1040 | } else if (prefix == "mds metadata") { |
1041 | if (!f) | |
1042 | f.reset(Formatter::create("json-pretty")); | |
1043 | ||
1044 | string who; | |
1045 | bool all = !cmd_getval(g_ceph_context, cmdmap, "who", who); | |
1046 | dout(1) << "all = " << all << dendl; | |
1047 | if (all) { | |
1048 | r = 0; | |
1049 | // Dump all MDSs' metadata | |
1050 | const auto all_info = fsmap.get_mds_info(); | |
1051 | ||
1052 | f->open_array_section("mds_metadata"); | |
1053 | for(const auto &i : all_info) { | |
1054 | const auto &info = i.second; | |
1055 | ||
1056 | f->open_object_section("mds"); | |
1057 | f->dump_string("name", info.name); | |
1058 | std::ostringstream get_err; | |
1adf2230 | 1059 | r = dump_metadata(fsmap, info.name, f.get(), get_err); |
7c673cae FG |
1060 | if (r == -EINVAL || r == -ENOENT) { |
1061 | // Drop error, list what metadata we do have | |
1062 | dout(1) << get_err.str() << dendl; | |
1063 | r = 0; | |
1064 | } else if (r != 0) { | |
1065 | derr << "Unexpected error reading metadata: " << cpp_strerror(r) | |
1066 | << dendl; | |
1067 | ss << get_err.str(); | |
c07f9fc5 | 1068 | f->close_section(); |
7c673cae FG |
1069 | break; |
1070 | } | |
1071 | f->close_section(); | |
1072 | } | |
1073 | f->close_section(); | |
1074 | } else { | |
1075 | // Dump a single daemon's metadata | |
1076 | f->open_object_section("mds_metadata"); | |
1adf2230 | 1077 | r = dump_metadata(fsmap, who, f.get(), ss); |
7c673cae FG |
1078 | f->close_section(); |
1079 | } | |
1080 | f->flush(ds); | |
31f18b77 FG |
1081 | } else if (prefix == "mds versions") { |
1082 | if (!f) | |
1083 | f.reset(Formatter::create("json-pretty")); | |
1084 | count_metadata("ceph_version", f.get()); | |
1085 | f->flush(ds); | |
1086 | r = 0; | |
1087 | } else if (prefix == "mds count-metadata") { | |
1088 | if (!f) | |
1089 | f.reset(Formatter::create("json-pretty")); | |
1090 | string field; | |
1091 | cmd_getval(g_ceph_context, cmdmap, "property", field); | |
1092 | count_metadata(field, f.get()); | |
1093 | f->flush(ds); | |
1094 | r = 0; | |
7c673cae FG |
1095 | } else if (prefix == "mds getmap") { |
1096 | epoch_t e; | |
1097 | int64_t epocharg; | |
1098 | bufferlist b; | |
1099 | if (cmd_getval(g_ceph_context, cmdmap, "epoch", epocharg)) { | |
1100 | e = epocharg; | |
1101 | int err = get_version(e, b); | |
1102 | if (err == -ENOENT) { | |
1103 | r = -ENOENT; | |
1104 | } else { | |
1105 | assert(err == 0); | |
1106 | assert(b.length()); | |
1107 | FSMap mm; | |
1108 | mm.decode(b); | |
1109 | mm.encode(rdata, m->get_connection()->get_features()); | |
1110 | ss << "got fsmap epoch " << mm.get_epoch(); | |
1111 | r = 0; | |
1112 | } | |
1113 | } else { | |
1114 | fsmap.encode(rdata, m->get_connection()->get_features()); | |
1115 | ss << "got fsmap epoch " << fsmap.get_epoch(); | |
1116 | r = 0; | |
1117 | } | |
1118 | } else if (prefix == "mds compat show") { | |
1119 | if (f) { | |
1120 | f->open_object_section("mds_compat"); | |
1121 | fsmap.compat.dump(f.get()); | |
1122 | f->close_section(); | |
1123 | f->flush(ds); | |
1124 | } else { | |
1125 | ds << fsmap.compat; | |
1126 | } | |
1127 | r = 0; | |
1128 | } else if (prefix == "fs get") { | |
1129 | string fs_name; | |
1130 | cmd_getval(g_ceph_context, cmdmap, "fs_name", fs_name); | |
28e407b8 | 1131 | const auto &fs = fsmap.get_filesystem(fs_name); |
7c673cae FG |
1132 | if (fs == nullptr) { |
1133 | ss << "filesystem '" << fs_name << "' not found"; | |
1134 | r = -ENOENT; | |
1135 | } else { | |
1136 | if (f != nullptr) { | |
1137 | f->open_object_section("filesystem"); | |
1138 | fs->dump(f.get()); | |
1139 | f->close_section(); | |
1140 | f->flush(ds); | |
1141 | r = 0; | |
1142 | } else { | |
1143 | fs->print(ds); | |
1144 | r = 0; | |
1145 | } | |
1146 | } | |
1147 | } else if (prefix == "fs ls") { | |
1148 | if (f) { | |
1149 | f->open_array_section("filesystems"); | |
1adf2230 AA |
1150 | for (const auto &p : fsmap.filesystems) { |
1151 | const auto &fs = p.second; | |
1152 | f->open_object_section("filesystem"); | |
1153 | { | |
1154 | const MDSMap &mds_map = fs->mds_map; | |
1155 | f->dump_string("name", mds_map.fs_name); | |
1156 | /* Output both the names and IDs of pools, for use by | |
1157 | * humans and machines respectively */ | |
1158 | f->dump_string("metadata_pool", mon->osdmon()->osdmap.get_pool_name( | |
1159 | mds_map.metadata_pool)); | |
1160 | f->dump_int("metadata_pool_id", mds_map.metadata_pool); | |
1161 | f->open_array_section("data_pool_ids"); | |
1162 | for (const auto &id : mds_map.data_pools) { | |
1163 | f->dump_int("data_pool_id", id); | |
1164 | } | |
1165 | f->close_section(); | |
7c673cae | 1166 | |
1adf2230 AA |
1167 | f->open_array_section("data_pools"); |
1168 | for (const auto &id : mds_map.data_pools) { | |
1169 | const auto &name = mon->osdmon()->osdmap.get_pool_name(id); | |
1170 | f->dump_string("data_pool", name); | |
7c673cae FG |
1171 | } |
1172 | f->close_section(); | |
1173 | } | |
1adf2230 | 1174 | f->close_section(); |
7c673cae FG |
1175 | } |
1176 | f->close_section(); | |
1177 | f->flush(ds); | |
1178 | } else { | |
28e407b8 AA |
1179 | for (const auto &p : fsmap.filesystems) { |
1180 | const auto &fs = p.second; | |
7c673cae FG |
1181 | const MDSMap &mds_map = fs->mds_map; |
1182 | const string &md_pool_name = mon->osdmon()->osdmap.get_pool_name( | |
1183 | mds_map.metadata_pool); | |
1184 | ||
1185 | ds << "name: " << mds_map.fs_name << ", metadata pool: " | |
1186 | << md_pool_name << ", data pools: ["; | |
1adf2230 AA |
1187 | for (const auto &id : mds_map.data_pools) { |
1188 | const string &pool_name = mon->osdmon()->osdmap.get_pool_name(id); | |
7c673cae FG |
1189 | ds << pool_name << " "; |
1190 | } | |
1191 | ds << "]" << std::endl; | |
1192 | } | |
1193 | ||
1194 | if (fsmap.filesystems.empty()) { | |
1195 | ds << "No filesystems enabled" << std::endl; | |
1196 | } | |
1197 | } | |
1198 | r = 0; | |
1199 | } | |
1200 | ||
28e407b8 | 1201 | out: |
7c673cae FG |
1202 | if (r != -1) { |
1203 | rdata.append(ds); | |
1204 | string rs; | |
1205 | getline(ss, rs); | |
1206 | mon->reply_command(op, r, rs, rdata, get_last_committed()); | |
1207 | return true; | |
1208 | } else | |
1209 | return false; | |
1210 | } | |
1211 | ||
1adf2230 | 1212 | bool MDSMonitor::fail_mds_gid(FSMap &fsmap, mds_gid_t gid) |
7c673cae | 1213 | { |
1adf2230 | 1214 | const MDSMap::mds_info_t &info = fsmap.get_info_gid(gid); |
7c673cae FG |
1215 | dout(10) << "fail_mds_gid " << gid << " mds." << info.name << " role " << info.rank << dendl; |
1216 | ||
1217 | epoch_t blacklist_epoch = 0; | |
1218 | if (info.rank >= 0 && info.state != MDSMap::STATE_STANDBY_REPLAY) { | |
1219 | utime_t until = ceph_clock_now(); | |
b32b8144 | 1220 | until += g_conf->get_val<double>("mon_mds_blacklist_interval"); |
7c673cae FG |
1221 | blacklist_epoch = mon->osdmon()->blacklist(info.addr, until); |
1222 | } | |
1223 | ||
1adf2230 | 1224 | fsmap.erase(gid, blacklist_epoch); |
7c673cae FG |
1225 | last_beacon.erase(gid); |
1226 | if (pending_daemon_health.count(gid)) { | |
1227 | pending_daemon_health.erase(gid); | |
1228 | pending_daemon_health_rm.insert(gid); | |
1229 | } | |
1230 | ||
1231 | return blacklist_epoch != 0; | |
1232 | } | |
1233 | ||
1adf2230 | 1234 | mds_gid_t MDSMonitor::gid_from_arg(const FSMap &fsmap, const std::string &arg, std::ostream &ss) |
7c673cae FG |
1235 | { |
1236 | // Try parsing as a role | |
1237 | mds_role_t role; | |
1238 | std::ostringstream ignore_err; // Don't spam 'ss' with parse_role errors | |
1adf2230 | 1239 | int r = fsmap.parse_role(arg, &role, ignore_err); |
7c673cae FG |
1240 | if (r == 0) { |
1241 | // See if a GID is assigned to this role | |
28e407b8 | 1242 | const auto &fs = fsmap.get_filesystem(role.fscid); |
7c673cae FG |
1243 | assert(fs != nullptr); // parse_role ensures it exists |
1244 | if (fs->mds_map.is_up(role.rank)) { | |
1245 | dout(10) << __func__ << ": validated rank/GID " << role | |
1246 | << " as a rank" << dendl; | |
1247 | return fs->mds_map.get_mds_info(role.rank).global_id; | |
1248 | } | |
1249 | } | |
1250 | ||
1251 | // Try parsing as a gid | |
1252 | std::string err; | |
1253 | unsigned long long maybe_gid = strict_strtoll(arg.c_str(), 10, &err); | |
1254 | if (!err.empty()) { | |
1255 | // Not a role or a GID, try as a daemon name | |
28e407b8 | 1256 | const MDSMap::mds_info_t *mds_info = fsmap.find_by_name(arg); |
7c673cae FG |
1257 | if (!mds_info) { |
1258 | ss << "MDS named '" << arg | |
1259 | << "' does not exist, or is not up"; | |
1260 | return MDS_GID_NONE; | |
1261 | } | |
1262 | dout(10) << __func__ << ": resolved MDS name '" << arg | |
1263 | << "' to GID " << mds_info->global_id << dendl; | |
1264 | return mds_info->global_id; | |
1265 | } else { | |
1266 | // Not a role, but parses as a an integer, might be a GID | |
1267 | dout(10) << __func__ << ": treating MDS reference '" << arg | |
1268 | << "' as an integer " << maybe_gid << dendl; | |
31f18b77 | 1269 | |
28e407b8 | 1270 | if (fsmap.gid_exists(mds_gid_t(maybe_gid))) { |
31f18b77 | 1271 | return mds_gid_t(maybe_gid); |
7c673cae FG |
1272 | } |
1273 | } | |
1274 | ||
1275 | dout(1) << __func__ << ": rank/GID " << arg | |
1276 | << " not a existent rank or GID" << dendl; | |
1277 | return MDS_GID_NONE; | |
1278 | } | |
1279 | ||
1adf2230 AA |
1280 | int MDSMonitor::fail_mds(FSMap &fsmap, std::ostream &ss, |
1281 | const std::string &arg, MDSMap::mds_info_t *failed_info) | |
7c673cae | 1282 | { |
d2e6a577 FG |
1283 | assert(failed_info != nullptr); |
1284 | ||
1adf2230 | 1285 | mds_gid_t gid = gid_from_arg(fsmap, arg, ss); |
7c673cae FG |
1286 | if (gid == MDS_GID_NONE) { |
1287 | return 0; | |
1288 | } | |
1289 | if (!mon->osdmon()->is_writeable()) { | |
1290 | return -EAGAIN; | |
1291 | } | |
d2e6a577 FG |
1292 | |
1293 | // Take a copy of the info before removing the MDS from the map, | |
1294 | // so that the caller knows which mds (if any) they ended up removing. | |
1adf2230 | 1295 | *failed_info = fsmap.get_info_gid(gid); |
d2e6a577 | 1296 | |
1adf2230 | 1297 | fail_mds_gid(fsmap, gid); |
7c673cae FG |
1298 | ss << "failed mds gid " << gid; |
1299 | assert(mon->osdmon()->is_writeable()); | |
1300 | request_proposal(mon->osdmon()); | |
1301 | return 0; | |
1302 | } | |
1303 | ||
1304 | bool MDSMonitor::prepare_command(MonOpRequestRef op) | |
1305 | { | |
1306 | op->mark_mdsmon_event(__func__); | |
1307 | MMonCommand *m = static_cast<MMonCommand*>(op->get_req()); | |
1308 | int r = -EINVAL; | |
1309 | stringstream ss; | |
1310 | bufferlist rdata; | |
1311 | ||
1312 | map<string, cmd_vartype> cmdmap; | |
1313 | if (!cmdmap_from_json(m->cmd, &cmdmap, ss)) { | |
1314 | string rs = ss.str(); | |
1315 | mon->reply_command(op, -EINVAL, rs, rdata, get_last_committed()); | |
1316 | return true; | |
1317 | } | |
1318 | ||
1319 | string prefix; | |
1320 | cmd_getval(g_ceph_context, cmdmap, "prefix", prefix); | |
1321 | ||
1322 | /* Refuse access if message not associated with a valid session */ | |
1323 | MonSession *session = m->get_session(); | |
1324 | if (!session) { | |
1325 | mon->reply_command(op, -EACCES, "access denied", rdata, get_last_committed()); | |
1326 | return true; | |
1327 | } | |
1328 | ||
28e407b8 AA |
1329 | auto &pending = get_pending_fsmap_writeable(); |
1330 | ||
c07f9fc5 | 1331 | bool batched_propose = false; |
28e407b8 | 1332 | for (const auto &h : handlers) { |
7c673cae | 1333 | if (h->can_handle(prefix)) { |
c07f9fc5 FG |
1334 | batched_propose = h->batched_propose(); |
1335 | if (batched_propose) { | |
1336 | paxos->plug(); | |
1337 | } | |
28e407b8 | 1338 | r = h->handle(mon, pending, op, cmdmap, ss); |
c07f9fc5 FG |
1339 | if (batched_propose) { |
1340 | paxos->unplug(); | |
1341 | } | |
1342 | ||
7c673cae FG |
1343 | if (r == -EAGAIN) { |
1344 | // message has been enqueued for retry; return. | |
1345 | dout(4) << __func__ << " enqueue for retry by prepare_command" << dendl; | |
1346 | return false; | |
1347 | } else { | |
1348 | if (r == 0) { | |
1349 | // On successful updates, print the updated map | |
28e407b8 | 1350 | print_map(pending); |
7c673cae FG |
1351 | } |
1352 | // Successful or not, we're done: respond. | |
1353 | goto out; | |
1354 | } | |
1355 | } | |
1356 | } | |
1357 | ||
1adf2230 | 1358 | r = filesystem_command(pending, op, prefix, cmdmap, ss); |
7c673cae FG |
1359 | if (r >= 0) { |
1360 | goto out; | |
1361 | } else if (r == -EAGAIN) { | |
1362 | // Do not reply, the message has been enqueued for retry | |
1363 | dout(4) << __func__ << " enqueue for retry by filesystem_command" << dendl; | |
1364 | return false; | |
1365 | } else if (r != -ENOSYS) { | |
1366 | goto out; | |
1367 | } | |
1368 | ||
1369 | // Only handle legacy commands if there is a filesystem configured | |
28e407b8 AA |
1370 | if (pending.legacy_client_fscid == FS_CLUSTER_ID_NONE) { |
1371 | if (pending.filesystems.size() == 0) { | |
7c673cae FG |
1372 | ss << "No filesystem configured: use `ceph fs new` to create a filesystem"; |
1373 | } else { | |
1374 | ss << "No filesystem set for use with legacy commands"; | |
1375 | } | |
1376 | r = -EINVAL; | |
1377 | goto out; | |
1378 | } | |
1379 | ||
1adf2230 | 1380 | r = legacy_filesystem_command(pending, op, prefix, cmdmap, ss); |
7c673cae FG |
1381 | |
1382 | if (r == -ENOSYS && ss.str().empty()) { | |
1383 | ss << "unrecognized command"; | |
1384 | } | |
1385 | ||
1386 | out: | |
1387 | dout(4) << __func__ << " done, r=" << r << dendl; | |
1388 | /* Compose response */ | |
1389 | string rs; | |
1390 | getline(ss, rs); | |
1391 | ||
1392 | if (r >= 0) { | |
1393 | // success.. delay reply | |
1394 | wait_for_finished_proposal(op, new Monitor::C_Command(mon, op, r, rs, | |
1395 | get_last_committed() + 1)); | |
c07f9fc5 FG |
1396 | if (batched_propose) { |
1397 | force_immediate_propose(); | |
1398 | } | |
7c673cae FG |
1399 | return true; |
1400 | } else { | |
1401 | // reply immediately | |
1402 | mon->reply_command(op, r, rs, rdata, get_last_committed()); | |
1403 | return false; | |
1404 | } | |
1405 | } | |
1406 | ||
7c673cae | 1407 | int MDSMonitor::filesystem_command( |
1adf2230 | 1408 | FSMap &fsmap, |
7c673cae FG |
1409 | MonOpRequestRef op, |
1410 | std::string const &prefix, | |
1411 | map<string, cmd_vartype> &cmdmap, | |
1412 | std::stringstream &ss) | |
1413 | { | |
1414 | dout(4) << __func__ << " prefix='" << prefix << "'" << dendl; | |
1415 | op->mark_mdsmon_event(__func__); | |
1416 | int r = 0; | |
1417 | string whostr; | |
1418 | cmd_getval(g_ceph_context, cmdmap, "who", whostr); | |
1419 | ||
1420 | if (prefix == "mds stop" || | |
1421 | prefix == "mds deactivate") { | |
7c673cae | 1422 | mds_role_t role; |
1adf2230 | 1423 | r = fsmap.parse_role(whostr, &role, ss); |
7c673cae FG |
1424 | if (r < 0 ) { |
1425 | return r; | |
1426 | } | |
1adf2230 | 1427 | const auto &fs = fsmap.get_filesystem(role.fscid); |
7c673cae FG |
1428 | |
1429 | if (!fs->mds_map.is_active(role.rank)) { | |
1430 | r = -EEXIST; | |
1431 | ss << "mds." << role << " not active (" | |
1432 | << ceph_mds_state_name(fs->mds_map.get_state(role.rank)) << ")"; | |
1433 | } else if (fs->mds_map.get_root() == role.rank || | |
1434 | fs->mds_map.get_tableserver() == role.rank) { | |
1435 | r = -EINVAL; | |
1436 | ss << "can't tell the root (" << fs->mds_map.get_root() | |
1437 | << ") or tableserver (" << fs->mds_map.get_tableserver() | |
1438 | << ") to deactivate"; | |
31f18b77 FG |
1439 | } else if (role.rank != fs->mds_map.get_last_in_mds()) { |
1440 | r = -EINVAL; | |
1441 | ss << "mds." << role << " doesn't have the max rank (" | |
1442 | << fs->mds_map.get_last_in_mds() << ")"; | |
7c673cae FG |
1443 | } else if (fs->mds_map.get_num_in_mds() <= size_t(fs->mds_map.get_max_mds())) { |
1444 | r = -EBUSY; | |
1445 | ss << "must decrease max_mds or else MDS will immediately reactivate"; | |
1446 | } else { | |
1447 | r = 0; | |
1448 | mds_gid_t gid = fs->mds_map.up.at(role.rank); | |
1449 | ss << "telling mds." << role << " " | |
1adf2230 | 1450 | << fsmap.get_info_gid(gid).addr << " to deactivate"; |
7c673cae | 1451 | |
1adf2230 | 1452 | fsmap.modify_daemon(gid, [](MDSMap::mds_info_t *info) { |
7c673cae FG |
1453 | info->state = MDSMap::STATE_STOPPING; |
1454 | }); | |
1455 | } | |
1456 | } else if (prefix == "mds set_state") { | |
1457 | mds_gid_t gid; | |
1458 | if (!cmd_getval(g_ceph_context, cmdmap, "gid", gid)) { | |
1459 | ss << "error parsing 'gid' value '" | |
1460 | << cmd_vartype_stringify(cmdmap["gid"]) << "'"; | |
1461 | return -EINVAL; | |
1462 | } | |
1463 | MDSMap::DaemonState state; | |
1464 | if (!cmd_getval(g_ceph_context, cmdmap, "state", state)) { | |
1465 | ss << "error parsing 'state' string value '" | |
1466 | << cmd_vartype_stringify(cmdmap["state"]) << "'"; | |
1467 | return -EINVAL; | |
1468 | } | |
1adf2230 AA |
1469 | if (fsmap.gid_exists(gid)) { |
1470 | fsmap.modify_daemon(gid, [state](MDSMap::mds_info_t *info) { | |
7c673cae FG |
1471 | info->state = state; |
1472 | }); | |
1473 | ss << "set mds gid " << gid << " to state " << state << " " | |
1474 | << ceph_mds_state_name(state); | |
1475 | return 0; | |
1476 | } | |
1477 | } else if (prefix == "mds fail") { | |
1478 | string who; | |
1479 | cmd_getval(g_ceph_context, cmdmap, "who", who); | |
d2e6a577 FG |
1480 | |
1481 | MDSMap::mds_info_t failed_info; | |
1adf2230 | 1482 | r = fail_mds(fsmap, ss, who, &failed_info); |
7c673cae FG |
1483 | if (r < 0 && r == -EAGAIN) { |
1484 | mon->osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
1485 | return -EAGAIN; // don't propose yet; wait for message to be retried | |
d2e6a577 FG |
1486 | } else if (r == 0) { |
1487 | // Only log if we really did something (not when was already gone) | |
1488 | if (failed_info.global_id != MDS_GID_NONE) { | |
1489 | mon->clog->info() << failed_info.human_name() << " marked failed by " | |
1490 | << op->get_session()->entity_name; | |
1491 | } | |
7c673cae FG |
1492 | } |
1493 | } else if (prefix == "mds rm") { | |
1494 | mds_gid_t gid; | |
1495 | if (!cmd_getval(g_ceph_context, cmdmap, "gid", gid)) { | |
1496 | ss << "error parsing 'gid' value '" | |
1497 | << cmd_vartype_stringify(cmdmap["gid"]) << "'"; | |
1498 | return -EINVAL; | |
1499 | } | |
1adf2230 | 1500 | if (!fsmap.gid_exists(gid)) { |
7c673cae FG |
1501 | ss << "mds gid " << gid << " dne"; |
1502 | r = 0; | |
1503 | } else { | |
1adf2230 | 1504 | const auto &info = fsmap.get_info_gid(gid); |
28e407b8 | 1505 | MDSMap::DaemonState state = info.state; |
7c673cae | 1506 | if (state > 0) { |
28e407b8 AA |
1507 | ss << "cannot remove active mds." << info.name |
1508 | << " rank " << info.rank; | |
7c673cae FG |
1509 | return -EBUSY; |
1510 | } else { | |
1adf2230 | 1511 | fsmap.erase(gid, {}); |
7c673cae FG |
1512 | ss << "removed mds gid " << gid; |
1513 | return 0; | |
1514 | } | |
1515 | } | |
1516 | } else if (prefix == "mds rmfailed") { | |
1517 | string confirm; | |
1518 | if (!cmd_getval(g_ceph_context, cmdmap, "confirm", confirm) || | |
1519 | confirm != "--yes-i-really-mean-it") { | |
1520 | ss << "WARNING: this can make your filesystem inaccessible! " | |
1521 | "Add --yes-i-really-mean-it if you are sure you wish to continue."; | |
1522 | return -EPERM; | |
1523 | } | |
1524 | ||
1525 | std::string role_str; | |
1526 | cmd_getval(g_ceph_context, cmdmap, "who", role_str); | |
1527 | mds_role_t role; | |
1adf2230 | 1528 | int r = fsmap.parse_role(role_str, &role, ss); |
7c673cae FG |
1529 | if (r < 0) { |
1530 | ss << "invalid role '" << role_str << "'"; | |
1531 | return -EINVAL; | |
1532 | } | |
1533 | ||
1adf2230 | 1534 | fsmap.modify_filesystem( |
7c673cae FG |
1535 | role.fscid, |
1536 | [role](std::shared_ptr<Filesystem> fs) | |
1537 | { | |
1538 | fs->mds_map.failed.erase(role.rank); | |
1539 | }); | |
1540 | ||
1541 | ss << "removed failed mds." << role; | |
1542 | return 0; | |
1543 | } else if (prefix == "mds compat rm_compat") { | |
1544 | int64_t f; | |
1545 | if (!cmd_getval(g_ceph_context, cmdmap, "feature", f)) { | |
1546 | ss << "error parsing feature value '" | |
1547 | << cmd_vartype_stringify(cmdmap["feature"]) << "'"; | |
1548 | return -EINVAL; | |
1549 | } | |
1adf2230 | 1550 | if (fsmap.compat.compat.contains(f)) { |
7c673cae | 1551 | ss << "removing compat feature " << f; |
1adf2230 | 1552 | CompatSet modified = fsmap.compat; |
7c673cae | 1553 | modified.compat.remove(f); |
1adf2230 | 1554 | fsmap.update_compat(modified); |
7c673cae | 1555 | } else { |
1adf2230 | 1556 | ss << "compat feature " << f << " not present in " << fsmap.compat; |
7c673cae FG |
1557 | } |
1558 | r = 0; | |
1559 | } else if (prefix == "mds compat rm_incompat") { | |
1560 | int64_t f; | |
1561 | if (!cmd_getval(g_ceph_context, cmdmap, "feature", f)) { | |
1562 | ss << "error parsing feature value '" | |
1563 | << cmd_vartype_stringify(cmdmap["feature"]) << "'"; | |
1564 | return -EINVAL; | |
1565 | } | |
1adf2230 | 1566 | if (fsmap.compat.incompat.contains(f)) { |
7c673cae | 1567 | ss << "removing incompat feature " << f; |
1adf2230 | 1568 | CompatSet modified = fsmap.compat; |
7c673cae | 1569 | modified.incompat.remove(f); |
1adf2230 | 1570 | fsmap.update_compat(modified); |
7c673cae | 1571 | } else { |
1adf2230 | 1572 | ss << "incompat feature " << f << " not present in " << fsmap.compat; |
7c673cae FG |
1573 | } |
1574 | r = 0; | |
1575 | } else if (prefix == "mds repaired") { | |
1576 | std::string role_str; | |
1577 | cmd_getval(g_ceph_context, cmdmap, "rank", role_str); | |
1578 | mds_role_t role; | |
1adf2230 | 1579 | r = fsmap.parse_role(role_str, &role, ss); |
7c673cae FG |
1580 | if (r < 0) { |
1581 | return r; | |
1582 | } | |
1583 | ||
1adf2230 | 1584 | bool modified = fsmap.undamaged(role.fscid, role.rank); |
7c673cae FG |
1585 | if (modified) { |
1586 | dout(4) << "repaired: restoring rank " << role << dendl; | |
1587 | } else { | |
1588 | dout(4) << "repaired: no-op on rank " << role << dendl; | |
1589 | } | |
1590 | ||
1591 | r = 0; | |
1592 | } else { | |
1593 | return -ENOSYS; | |
1594 | } | |
1595 | ||
1596 | return r; | |
1597 | } | |
1598 | ||
1599 | /** | |
1600 | * Helper to legacy_filesystem_command | |
1601 | */ | |
1adf2230 | 1602 | void MDSMonitor::modify_legacy_filesystem(FSMap &fsmap, |
7c673cae FG |
1603 | std::function<void(std::shared_ptr<Filesystem> )> fn) |
1604 | { | |
1adf2230 AA |
1605 | fsmap.modify_filesystem( |
1606 | fsmap.legacy_client_fscid, | |
7c673cae FG |
1607 | fn |
1608 | ); | |
1609 | } | |
1610 | ||
1611 | ||
1612 | ||
1613 | /** | |
1614 | * Handle a command that affects the filesystem (i.e. a filesystem | |
1615 | * must exist for the command to act upon). | |
1616 | * | |
1617 | * @retval 0 Command was successfully handled and has side effects | |
1618 | * @retval -EAGAIN Messages has been requeued for retry | |
1619 | * @retval -ENOSYS Unknown command | |
1620 | * @retval < 0 An error has occurred; **ss** may have been set. | |
1621 | */ | |
1622 | int MDSMonitor::legacy_filesystem_command( | |
1adf2230 | 1623 | FSMap &fsmap, |
7c673cae FG |
1624 | MonOpRequestRef op, |
1625 | std::string const &prefix, | |
1626 | map<string, cmd_vartype> &cmdmap, | |
1627 | std::stringstream &ss) | |
1628 | { | |
1629 | dout(4) << __func__ << " prefix='" << prefix << "'" << dendl; | |
1630 | op->mark_mdsmon_event(__func__); | |
1631 | int r = 0; | |
1632 | string whostr; | |
1633 | cmd_getval(g_ceph_context, cmdmap, "who", whostr); | |
1634 | ||
1adf2230 | 1635 | assert (fsmap.legacy_client_fscid != FS_CLUSTER_ID_NONE); |
7c673cae FG |
1636 | |
1637 | if (prefix == "mds set_max_mds") { | |
1638 | // NOTE: deprecated by "fs set max_mds" | |
1639 | int64_t maxmds; | |
1640 | if (!cmd_getval(g_ceph_context, cmdmap, "maxmds", maxmds) || maxmds <= 0) { | |
1641 | return -EINVAL; | |
1642 | } | |
1643 | ||
1644 | const MDSMap& mdsmap = | |
1adf2230 | 1645 | fsmap.filesystems.at(fsmap.legacy_client_fscid)->mds_map; |
7c673cae FG |
1646 | |
1647 | if (!mdsmap.allows_multimds() && | |
1648 | maxmds > mdsmap.get_max_mds() && | |
1649 | maxmds > 1) { | |
1650 | ss << "multi-MDS clusters are not enabled; set 'allow_multimds' to enable"; | |
1651 | return -EINVAL; | |
1652 | } | |
1653 | ||
1654 | if (maxmds > MAX_MDS) { | |
1655 | ss << "may not have more than " << MAX_MDS << " MDS ranks"; | |
1656 | return -EINVAL; | |
1657 | } | |
1658 | ||
1adf2230 | 1659 | modify_legacy_filesystem(fsmap, |
7c673cae FG |
1660 | [maxmds](std::shared_ptr<Filesystem> fs) |
1661 | { | |
1662 | fs->mds_map.set_max_mds(maxmds); | |
1663 | }); | |
1664 | ||
1665 | r = 0; | |
1666 | ss << "max_mds = " << maxmds; | |
1667 | } else if (prefix == "mds cluster_down") { | |
1668 | // NOTE: deprecated by "fs set cluster_down" | |
1adf2230 | 1669 | modify_legacy_filesystem(fsmap, |
7c673cae FG |
1670 | [](std::shared_ptr<Filesystem> fs) |
1671 | { | |
1672 | fs->mds_map.set_flag(CEPH_MDSMAP_DOWN); | |
1673 | }); | |
1674 | ss << "marked fsmap DOWN"; | |
1675 | r = 0; | |
1676 | } else if (prefix == "mds cluster_up") { | |
1677 | // NOTE: deprecated by "fs set cluster_up" | |
1adf2230 | 1678 | modify_legacy_filesystem(fsmap, |
7c673cae FG |
1679 | [](std::shared_ptr<Filesystem> fs) |
1680 | { | |
1681 | fs->mds_map.clear_flag(CEPH_MDSMAP_DOWN); | |
1682 | }); | |
1683 | ss << "unmarked fsmap DOWN"; | |
1684 | r = 0; | |
1685 | } else { | |
1686 | return -ENOSYS; | |
1687 | } | |
1688 | ||
1689 | return r; | |
1690 | } | |
1691 | ||
1692 | ||
1693 | void MDSMonitor::check_subs() | |
1694 | { | |
1695 | std::list<std::string> types; | |
1696 | ||
1697 | // Subscriptions may be to "mdsmap" (MDS and legacy clients), | |
1698 | // "mdsmap.<namespace>", or to "fsmap" for the full state of all | |
1699 | // filesystems. Build a list of all the types we service | |
1700 | // subscriptions for. | |
1701 | types.push_back("fsmap"); | |
1702 | types.push_back("fsmap.user"); | |
1703 | types.push_back("mdsmap"); | |
28e407b8 AA |
1704 | for (const auto &p : get_fsmap().filesystems) { |
1705 | const auto &fscid = p.first; | |
7c673cae FG |
1706 | std::ostringstream oss; |
1707 | oss << "mdsmap." << fscid; | |
1708 | types.push_back(oss.str()); | |
1709 | } | |
1710 | ||
1711 | for (const auto &type : types) { | |
1712 | if (mon->session_map.subs.count(type) == 0) | |
1713 | continue; | |
1714 | xlist<Subscription*>::iterator p = mon->session_map.subs[type]->begin(); | |
1715 | while (!p.end()) { | |
1716 | Subscription *sub = *p; | |
1717 | ++p; | |
1718 | check_sub(sub); | |
1719 | } | |
1720 | } | |
1721 | } | |
1722 | ||
1723 | ||
1724 | void MDSMonitor::check_sub(Subscription *sub) | |
1725 | { | |
1726 | dout(20) << __func__ << ": " << sub->type << dendl; | |
1727 | ||
28e407b8 AA |
1728 | const auto &fsmap = get_fsmap(); |
1729 | ||
7c673cae FG |
1730 | if (sub->type == "fsmap") { |
1731 | if (sub->next <= fsmap.get_epoch()) { | |
1732 | sub->session->con->send_message(new MFSMap(mon->monmap->fsid, fsmap)); | |
1733 | if (sub->onetime) { | |
1734 | mon->session_map.remove_sub(sub); | |
1735 | } else { | |
1736 | sub->next = fsmap.get_epoch() + 1; | |
1737 | } | |
1738 | } | |
1739 | } else if (sub->type == "fsmap.user") { | |
1740 | if (sub->next <= fsmap.get_epoch()) { | |
1741 | FSMapUser fsmap_u; | |
1742 | fsmap_u.epoch = fsmap.get_epoch(); | |
1743 | fsmap_u.legacy_client_fscid = fsmap.legacy_client_fscid; | |
28e407b8 AA |
1744 | for (const auto &p : fsmap.filesystems) { |
1745 | FSMapUser::fs_info_t& fs_info = fsmap_u.filesystems[p.second->fscid]; | |
1746 | fs_info.cid = p.second->fscid; | |
1747 | fs_info.name = p.second->mds_map.fs_name; | |
7c673cae FG |
1748 | } |
1749 | sub->session->con->send_message(new MFSMapUser(mon->monmap->fsid, fsmap_u)); | |
1750 | if (sub->onetime) { | |
1751 | mon->session_map.remove_sub(sub); | |
1752 | } else { | |
1753 | sub->next = fsmap.get_epoch() + 1; | |
1754 | } | |
1755 | } | |
1756 | } else if (sub->type.compare(0, 6, "mdsmap") == 0) { | |
1757 | if (sub->next > fsmap.get_epoch()) { | |
1758 | return; | |
1759 | } | |
1760 | ||
1761 | const bool is_mds = sub->session->inst.name.is_mds(); | |
1762 | mds_gid_t mds_gid = MDS_GID_NONE; | |
1763 | fs_cluster_id_t fscid = FS_CLUSTER_ID_NONE; | |
1764 | if (is_mds) { | |
1765 | // What (if any) namespace are you assigned to? | |
1766 | auto mds_info = fsmap.get_mds_info(); | |
1adf2230 AA |
1767 | for (const auto &p : mds_info) { |
1768 | if (p.second.addr == sub->session->inst.addr) { | |
1769 | mds_gid = p.first; | |
7c673cae FG |
1770 | fscid = fsmap.mds_roles.at(mds_gid); |
1771 | } | |
1772 | } | |
1773 | } else { | |
1774 | // You're a client. Did you request a particular | |
1775 | // namespace? | |
1776 | if (sub->type.find("mdsmap.") == 0) { | |
1777 | auto namespace_id_str = sub->type.substr(std::string("mdsmap.").size()); | |
1778 | dout(10) << __func__ << ": namespace_id " << namespace_id_str << dendl; | |
1779 | std::string err; | |
1780 | fscid = strict_strtoll(namespace_id_str.c_str(), 10, &err); | |
1781 | if (!err.empty()) { | |
1782 | // Client asked for a non-existent namespace, send them nothing | |
1783 | dout(1) << "Invalid client subscription '" << sub->type | |
1784 | << "'" << dendl; | |
1785 | return; | |
1786 | } | |
1787 | if (fsmap.filesystems.count(fscid) == 0) { | |
1788 | // Client asked for a non-existent namespace, send them nothing | |
1789 | // TODO: something more graceful for when a client has a filesystem | |
1790 | // mounted, and the fileysstem is deleted. Add a "shut down you fool" | |
1791 | // flag to MMDSMap? | |
1792 | dout(1) << "Client subscribed to non-existent namespace '" << | |
1793 | fscid << "'" << dendl; | |
1794 | return; | |
1795 | } | |
1796 | } else { | |
1797 | // Unqualified request for "mdsmap": give it the one marked | |
1798 | // for use by legacy clients. | |
1799 | if (fsmap.legacy_client_fscid != FS_CLUSTER_ID_NONE) { | |
1800 | fscid = fsmap.legacy_client_fscid; | |
1801 | } else { | |
1802 | dout(1) << "Client subscribed for legacy filesystem but " | |
1803 | "none is configured" << dendl; | |
1804 | return; | |
1805 | } | |
1806 | } | |
1807 | } | |
1808 | dout(10) << __func__ << ": is_mds=" << is_mds << ", fscid= " << fscid << dendl; | |
1809 | ||
1810 | // Work out the effective latest epoch | |
28e407b8 | 1811 | const MDSMap *mds_map = nullptr; |
7c673cae FG |
1812 | MDSMap null_map; |
1813 | null_map.compat = fsmap.compat; | |
1814 | if (fscid == FS_CLUSTER_ID_NONE) { | |
1815 | // For a client, we should have already dropped out | |
1816 | assert(is_mds); | |
1817 | ||
28e407b8 AA |
1818 | auto it = fsmap.standby_daemons.find(mds_gid); |
1819 | if (it != fsmap.standby_daemons.end()) { | |
7c673cae | 1820 | // For an MDS, we need to feed it an MDSMap with its own state in |
28e407b8 AA |
1821 | null_map.mds_info[mds_gid] = it->second; |
1822 | null_map.epoch = fsmap.standby_epochs.at(mds_gid); | |
7c673cae FG |
1823 | } else { |
1824 | null_map.epoch = fsmap.epoch; | |
1825 | } | |
1826 | mds_map = &null_map; | |
1827 | } else { | |
1828 | // Check the effective epoch | |
28e407b8 | 1829 | mds_map = &fsmap.get_filesystem(fscid)->mds_map; |
7c673cae FG |
1830 | } |
1831 | ||
1832 | assert(mds_map != nullptr); | |
1833 | dout(10) << __func__ << " selected MDS map epoch " << | |
1834 | mds_map->epoch << " for namespace " << fscid << " for subscriber " | |
1835 | << sub->session->inst.name << " who wants epoch " << sub->next << dendl; | |
1836 | ||
1837 | if (sub->next > mds_map->epoch) { | |
1838 | return; | |
1839 | } | |
1840 | auto msg = new MMDSMap(mon->monmap->fsid, mds_map); | |
1841 | ||
1842 | sub->session->con->send_message(msg); | |
1843 | if (sub->onetime) { | |
1844 | mon->session_map.remove_sub(sub); | |
1845 | } else { | |
1846 | sub->next = mds_map->get_epoch() + 1; | |
1847 | } | |
1848 | } | |
1849 | } | |
1850 | ||
1851 | ||
1852 | void MDSMonitor::update_metadata(mds_gid_t gid, | |
1853 | const map<string, string>& metadata) | |
1854 | { | |
1855 | if (metadata.empty()) { | |
1856 | return; | |
1857 | } | |
1858 | pending_metadata[gid] = metadata; | |
1859 | ||
1860 | MonitorDBStore::TransactionRef t = paxos->get_pending_transaction(); | |
1861 | bufferlist bl; | |
1862 | ::encode(pending_metadata, bl); | |
1863 | t->put(MDS_METADATA_PREFIX, "last_metadata", bl); | |
1864 | paxos->trigger_propose(); | |
1865 | } | |
1866 | ||
1adf2230 | 1867 | void MDSMonitor::remove_from_metadata(const FSMap &fsmap, MonitorDBStore::TransactionRef t) |
7c673cae FG |
1868 | { |
1869 | bool update = false; | |
1adf2230 AA |
1870 | for (auto it = pending_metadata.begin(); it != pending_metadata.end(); ) { |
1871 | if (!fsmap.gid_exists(it->first)) { | |
1872 | it = pending_metadata.erase(it); | |
7c673cae FG |
1873 | update = true; |
1874 | } else { | |
1adf2230 | 1875 | ++it; |
7c673cae FG |
1876 | } |
1877 | } | |
1878 | if (!update) | |
1879 | return; | |
1880 | bufferlist bl; | |
1881 | ::encode(pending_metadata, bl); | |
1882 | t->put(MDS_METADATA_PREFIX, "last_metadata", bl); | |
1883 | } | |
1884 | ||
1885 | int MDSMonitor::load_metadata(map<mds_gid_t, Metadata>& m) | |
1886 | { | |
1887 | bufferlist bl; | |
1888 | int r = mon->store->get(MDS_METADATA_PREFIX, "last_metadata", bl); | |
1889 | if (r) { | |
1890 | dout(1) << "Unable to load 'last_metadata'" << dendl; | |
1891 | return r; | |
1892 | } | |
1893 | ||
1894 | bufferlist::iterator it = bl.begin(); | |
1895 | ::decode(m, it); | |
1896 | return 0; | |
1897 | } | |
1898 | ||
1adf2230 | 1899 | void MDSMonitor::count_metadata(const std::string &field, map<string,int> *out) |
31f18b77 | 1900 | { |
31f18b77 FG |
1901 | map<mds_gid_t,Metadata> meta; |
1902 | load_metadata(meta); | |
1903 | for (auto& p : meta) { | |
1904 | auto q = p.second.find(field); | |
1905 | if (q == p.second.end()) { | |
c07f9fc5 | 1906 | (*out)["unknown"]++; |
31f18b77 | 1907 | } else { |
c07f9fc5 | 1908 | (*out)[q->second]++; |
31f18b77 FG |
1909 | } |
1910 | } | |
c07f9fc5 FG |
1911 | } |
1912 | ||
1adf2230 | 1913 | void MDSMonitor::count_metadata(const std::string &field, Formatter *f) |
c07f9fc5 FG |
1914 | { |
1915 | map<string,int> by_val; | |
1916 | count_metadata(field, &by_val); | |
31f18b77 FG |
1917 | f->open_object_section(field.c_str()); |
1918 | for (auto& p : by_val) { | |
1919 | f->dump_int(p.first.c_str(), p.second); | |
1920 | } | |
1921 | f->close_section(); | |
1922 | } | |
1923 | ||
1adf2230 AA |
1924 | int MDSMonitor::dump_metadata(const FSMap& fsmap, const std::string &who, |
1925 | Formatter *f, ostream& err) | |
7c673cae FG |
1926 | { |
1927 | assert(f); | |
1928 | ||
1adf2230 | 1929 | mds_gid_t gid = gid_from_arg(fsmap, who, err); |
7c673cae FG |
1930 | if (gid == MDS_GID_NONE) { |
1931 | return -EINVAL; | |
1932 | } | |
1933 | ||
1934 | map<mds_gid_t, Metadata> metadata; | |
1935 | if (int r = load_metadata(metadata)) { | |
1936 | err << "Unable to load 'last_metadata'"; | |
1937 | return r; | |
1938 | } | |
1939 | ||
1940 | if (!metadata.count(gid)) { | |
1941 | return -ENOENT; | |
1942 | } | |
1943 | const Metadata& m = metadata[gid]; | |
1944 | for (Metadata::const_iterator p = m.begin(); p != m.end(); ++p) { | |
1945 | f->dump_string(p->first.c_str(), p->second); | |
1946 | } | |
1947 | return 0; | |
1948 | } | |
1949 | ||
1950 | int MDSMonitor::print_nodes(Formatter *f) | |
1951 | { | |
1952 | assert(f); | |
1953 | ||
1adf2230 AA |
1954 | const auto &fsmap = get_fsmap(); |
1955 | ||
7c673cae FG |
1956 | map<mds_gid_t, Metadata> metadata; |
1957 | if (int r = load_metadata(metadata)) { | |
1958 | return r; | |
1959 | } | |
1960 | ||
1961 | map<string, list<int> > mdses; // hostname => rank | |
1adf2230 AA |
1962 | for (const auto &p : metadata) { |
1963 | const mds_gid_t& gid = p.first; | |
1964 | const Metadata& m = p.second; | |
7c673cae FG |
1965 | Metadata::const_iterator hostname = m.find("hostname"); |
1966 | if (hostname == m.end()) { | |
1967 | // not likely though | |
1968 | continue; | |
1969 | } | |
1adf2230 | 1970 | if (!fsmap.gid_exists(gid)) { |
7c673cae FG |
1971 | dout(5) << __func__ << ": GID " << gid << " not existent" << dendl; |
1972 | continue; | |
1973 | } | |
1adf2230 | 1974 | const MDSMap::mds_info_t& mds_info = fsmap.get_info_gid(gid); |
7c673cae FG |
1975 | // FIXME: include filesystem name with rank here |
1976 | mdses[hostname->second].push_back(mds_info.rank); | |
1977 | } | |
1978 | ||
1979 | dump_services(f, mdses, "mds"); | |
1980 | return 0; | |
1981 | } | |
1982 | ||
1983 | /** | |
1984 | * If a cluster is undersized (with respect to max_mds), then | |
1985 | * attempt to find daemons to grow it. | |
1986 | */ | |
1adf2230 | 1987 | bool MDSMonitor::maybe_expand_cluster(FSMap &fsmap, fs_cluster_id_t fscid) |
7c673cae | 1988 | { |
1adf2230 AA |
1989 | auto fs = fsmap.get_filesystem(fscid); |
1990 | auto &mds_map = fs->mds_map; | |
7c673cae FG |
1991 | |
1992 | if (fs->mds_map.test_flag(CEPH_MDSMAP_DOWN)) { | |
1adf2230 | 1993 | return false; |
7c673cae FG |
1994 | } |
1995 | ||
1adf2230 AA |
1996 | int in = mds_map.get_num_in_mds(); |
1997 | int max = mds_map.get_max_mds(); | |
1998 | ||
1999 | dout(20) << __func__ << " in " << in << " max " << max << dendl; | |
2000 | ||
2001 | if (in < max) { | |
7c673cae FG |
2002 | mds_rank_t mds = mds_rank_t(0); |
2003 | string name; | |
1adf2230 | 2004 | while (mds_map.is_in(mds)) { |
7c673cae FG |
2005 | mds++; |
2006 | } | |
1adf2230 | 2007 | mds_gid_t newgid = fsmap.find_replacement_for({fscid, mds}, |
7c673cae FG |
2008 | name, g_conf->mon_force_standby_active); |
2009 | if (newgid == MDS_GID_NONE) { | |
1adf2230 | 2010 | return false; |
7c673cae FG |
2011 | } |
2012 | ||
1adf2230 | 2013 | const auto &new_info = fsmap.get_info_gid(newgid); |
d2e6a577 | 2014 | dout(1) << "assigned standby " << new_info.addr |
7c673cae | 2015 | << " as mds." << mds << dendl; |
d2e6a577 FG |
2016 | |
2017 | mon->clog->info() << new_info.human_name() << " assigned to " | |
1adf2230 AA |
2018 | "filesystem " << mds_map.fs_name << " as rank " |
2019 | << mds << " (now has " << mds_map.get_num_in_mds() + 1 | |
d2e6a577 | 2020 | << " ranks)"; |
1adf2230 AA |
2021 | fsmap.promote(newgid, fs, mds); |
2022 | return true; | |
7c673cae FG |
2023 | } |
2024 | ||
1adf2230 | 2025 | return false; |
7c673cae FG |
2026 | } |
2027 | ||
2028 | ||
2029 | /** | |
2030 | * If a daemon is laggy, and a suitable replacement | |
2031 | * is available, fail this daemon (remove from map) and pass its | |
2032 | * role to another daemon. | |
2033 | */ | |
1adf2230 AA |
2034 | void MDSMonitor::maybe_replace_gid(FSMap &fsmap, mds_gid_t gid, |
2035 | const MDSMap::mds_info_t& info, bool *mds_propose, bool *osd_propose) | |
7c673cae FG |
2036 | { |
2037 | assert(mds_propose != nullptr); | |
2038 | assert(osd_propose != nullptr); | |
2039 | ||
1adf2230 | 2040 | const auto fscid = fsmap.mds_roles.at(gid); |
7c673cae | 2041 | |
31f18b77 FG |
2042 | // We will only take decisive action (replacing/removing a daemon) |
2043 | // if we have some indicating that some other daemon(s) are successfully | |
2044 | // getting beacons through recently. | |
1adf2230 AA |
2045 | mono_time latest_beacon = mono_clock::zero(); |
2046 | for (const auto &p : last_beacon) { | |
2047 | latest_beacon = std::max(p.second.stamp, latest_beacon); | |
31f18b77 | 2048 | } |
1adf2230 AA |
2049 | mono_time now = mono_clock::now(); |
2050 | chrono::duration<double> since = now-latest_beacon; | |
2051 | const bool may_replace = since.count() < | |
2052 | std::max(g_conf->mds_beacon_interval, g_conf->mds_beacon_grace * 0.5); | |
31f18b77 | 2053 | |
7c673cae FG |
2054 | // are we in? |
2055 | // and is there a non-laggy standby that can take over for us? | |
2056 | mds_gid_t sgid; | |
2057 | if (info.rank >= 0 && | |
2058 | info.state != MDSMap::STATE_STANDBY && | |
2059 | info.state != MDSMap::STATE_STANDBY_REPLAY && | |
31f18b77 | 2060 | may_replace && |
1adf2230 AA |
2061 | !fsmap.get_filesystem(fscid)->mds_map.test_flag(CEPH_MDSMAP_DOWN) && |
2062 | (sgid = fsmap.find_replacement_for({fscid, info.rank}, info.name, | |
7c673cae FG |
2063 | g_conf->mon_force_standby_active)) != MDS_GID_NONE) |
2064 | { | |
2065 | ||
1adf2230 | 2066 | MDSMap::mds_info_t si = fsmap.get_info_gid(sgid); |
7c673cae FG |
2067 | dout(10) << " replacing " << gid << " " << info.addr << " mds." |
2068 | << info.rank << "." << info.inc | |
2069 | << " " << ceph_mds_state_name(info.state) | |
2070 | << " with " << sgid << "/" << si.name << " " << si.addr << dendl; | |
2071 | ||
d2e6a577 | 2072 | mon->clog->warn() << info.human_name() |
31f18b77 FG |
2073 | << " is not responding, replacing it " |
2074 | << "as rank " << info.rank | |
d2e6a577 | 2075 | << " with standby " << si.human_name(); |
31f18b77 | 2076 | |
7c673cae | 2077 | // Remember what NS the old one was in |
1adf2230 | 2078 | const fs_cluster_id_t fscid = fsmap.mds_roles.at(gid); |
7c673cae FG |
2079 | |
2080 | // Remove the old one | |
1adf2230 | 2081 | *osd_propose |= fail_mds_gid(fsmap, gid); |
7c673cae FG |
2082 | |
2083 | // Promote the replacement | |
1adf2230 AA |
2084 | auto fs = fsmap.filesystems.at(fscid); |
2085 | fsmap.promote(sgid, fs, info.rank); | |
7c673cae FG |
2086 | |
2087 | *mds_propose = true; | |
31f18b77 FG |
2088 | } else if ((info.state == MDSMap::STATE_STANDBY_REPLAY || |
2089 | info.state == MDSMap::STATE_STANDBY) && may_replace) { | |
7c673cae FG |
2090 | dout(10) << " failing and removing " << gid << " " << info.addr << " mds." << info.rank |
2091 | << "." << info.inc << " " << ceph_mds_state_name(info.state) | |
2092 | << dendl; | |
d2e6a577 FG |
2093 | mon->clog->info() << "Standby " << info.human_name() << " is not " |
2094 | "responding, dropping it"; | |
1adf2230 | 2095 | fail_mds_gid(fsmap, gid); |
7c673cae FG |
2096 | *mds_propose = true; |
2097 | } else if (!info.laggy()) { | |
2098 | dout(10) << " marking " << gid << " " << info.addr << " mds." << info.rank << "." << info.inc | |
2099 | << " " << ceph_mds_state_name(info.state) | |
2100 | << " laggy" << dendl; | |
1adf2230 | 2101 | fsmap.modify_daemon(info.global_id, [](MDSMap::mds_info_t *info) { |
7c673cae FG |
2102 | info->laggy_since = ceph_clock_now(); |
2103 | }); | |
2104 | *mds_propose = true; | |
2105 | } | |
2106 | } | |
2107 | ||
1adf2230 | 2108 | bool MDSMonitor::maybe_promote_standby(FSMap &fsmap, std::shared_ptr<Filesystem> &fs) |
7c673cae FG |
2109 | { |
2110 | assert(!fs->mds_map.test_flag(CEPH_MDSMAP_DOWN)); | |
2111 | ||
2112 | bool do_propose = false; | |
2113 | ||
2114 | // have a standby take over? | |
2115 | set<mds_rank_t> failed; | |
2116 | fs->mds_map.get_failed_mds_set(failed); | |
2117 | if (!failed.empty()) { | |
2118 | set<mds_rank_t>::iterator p = failed.begin(); | |
2119 | while (p != failed.end()) { | |
2120 | mds_rank_t f = *p++; | |
1adf2230 | 2121 | mds_gid_t sgid = fsmap.find_replacement_for({fs->fscid, f}, {}, |
7c673cae FG |
2122 | g_conf->mon_force_standby_active); |
2123 | if (sgid) { | |
1adf2230 | 2124 | const MDSMap::mds_info_t si = fsmap.get_info_gid(sgid); |
7c673cae FG |
2125 | dout(0) << " taking over failed mds." << f << " with " << sgid |
2126 | << "/" << si.name << " " << si.addr << dendl; | |
d2e6a577 FG |
2127 | mon->clog->info() << "Standby " << si.human_name() |
2128 | << " assigned to filesystem " << fs->mds_map.fs_name | |
2129 | << " as rank " << f; | |
2130 | ||
1adf2230 | 2131 | fsmap.promote(sgid, fs, f); |
7c673cae FG |
2132 | do_propose = true; |
2133 | } | |
2134 | } | |
2135 | } else { | |
2136 | // There were no failures to replace, so try using any available standbys | |
2137 | // as standby-replay daemons. | |
2138 | ||
2139 | // Take a copy of the standby GIDs so that we can iterate over | |
2140 | // them while perhaps-modifying standby_daemons during the loop | |
2141 | // (if we promote anyone they are removed from standby_daemons) | |
2142 | std::vector<mds_gid_t> standby_gids; | |
1adf2230 | 2143 | for (const auto &j : fsmap.standby_daemons) { |
7c673cae FG |
2144 | standby_gids.push_back(j.first); |
2145 | } | |
2146 | ||
2147 | for (const auto &gid : standby_gids) { | |
1adf2230 | 2148 | const auto &info = fsmap.standby_daemons.at(gid); |
7c673cae FG |
2149 | assert(info.state == MDSMap::STATE_STANDBY); |
2150 | ||
2151 | if (!info.standby_replay) { | |
2152 | continue; | |
2153 | } | |
2154 | ||
2155 | /* | |
2156 | * This mds is standby but has no rank assigned. | |
2157 | * See if we can find it somebody to shadow | |
2158 | */ | |
2159 | dout(20) << "gid " << gid << " is standby and following nobody" << dendl; | |
2160 | ||
2161 | // standby for someone specific? | |
2162 | if (info.standby_for_rank >= 0) { | |
2163 | // The mds_info_t may or may not tell us exactly which filesystem | |
2164 | // the standby_for_rank refers to: lookup via legacy_client_fscid | |
2165 | mds_role_t target_role = { | |
2166 | info.standby_for_fscid == FS_CLUSTER_ID_NONE ? | |
1adf2230 | 2167 | fsmap.legacy_client_fscid : info.standby_for_fscid, |
7c673cae FG |
2168 | info.standby_for_rank}; |
2169 | ||
2170 | // It is possible that the map contains a standby_for_fscid | |
2171 | // that doesn't correspond to an existing filesystem, especially | |
2172 | // if we loaded from a version with a bug (#17466) | |
2173 | if (info.standby_for_fscid != FS_CLUSTER_ID_NONE | |
1adf2230 | 2174 | && !fsmap.filesystem_exists(info.standby_for_fscid)) { |
7c673cae FG |
2175 | derr << "gid " << gid << " has invalid standby_for_fscid " |
2176 | << info.standby_for_fscid << dendl; | |
2177 | continue; | |
2178 | } | |
2179 | ||
2180 | // If we managed to resolve a full target role | |
2181 | if (target_role.fscid != FS_CLUSTER_ID_NONE) { | |
1adf2230 | 2182 | const auto &fs = fsmap.get_filesystem(target_role.fscid); |
7c673cae | 2183 | if (fs->mds_map.is_followable(target_role.rank)) { |
1adf2230 | 2184 | do_propose |= try_standby_replay(fsmap, info, *fs, |
7c673cae FG |
2185 | fs->mds_map.get_info(target_role.rank)); |
2186 | } | |
2187 | } | |
2188 | ||
2189 | continue; | |
2190 | } | |
2191 | ||
2192 | // check everyone | |
1adf2230 | 2193 | for (const auto &p : fsmap.filesystems) { |
28e407b8 AA |
2194 | if (info.standby_for_fscid != FS_CLUSTER_ID_NONE && |
2195 | info.standby_for_fscid != p.first) | |
2196 | continue; | |
2197 | ||
2198 | bool assigned = false; | |
2199 | const auto &fs = p.second; | |
2200 | const MDSMap &mds_map = fs->mds_map; | |
2201 | for (const auto &mds_i : mds_map.mds_info) { | |
2202 | const MDSMap::mds_info_t &cand_info = mds_i.second; | |
7c673cae FG |
2203 | if (cand_info.rank >= 0 && mds_map.is_followable(cand_info.rank)) { |
2204 | if ((info.standby_for_name.length() && info.standby_for_name != cand_info.name) || | |
2205 | info.standby_for_rank != MDS_RANK_NONE) { | |
2206 | continue; // we're supposed to follow someone else | |
2207 | } | |
2208 | ||
1adf2230 | 2209 | if (try_standby_replay(fsmap, info, *fs, cand_info)) { |
28e407b8 | 2210 | assigned = true; |
7c673cae FG |
2211 | break; |
2212 | } | |
7c673cae FG |
2213 | } |
2214 | } | |
28e407b8 AA |
2215 | if (assigned) { |
2216 | do_propose = true; | |
2217 | break; | |
2218 | } | |
7c673cae FG |
2219 | } |
2220 | } | |
2221 | } | |
2222 | ||
2223 | return do_propose; | |
2224 | } | |
2225 | ||
2226 | void MDSMonitor::tick() | |
2227 | { | |
2228 | // make sure mds's are still alive | |
2229 | // ...if i am an active leader | |
28e407b8 | 2230 | |
1adf2230 | 2231 | if (!is_active() || !is_leader()) return; |
28e407b8 AA |
2232 | |
2233 | auto &pending = get_pending_fsmap_writeable(); | |
7c673cae | 2234 | |
28e407b8 | 2235 | bool do_propose = false; |
7c673cae | 2236 | |
28e407b8 | 2237 | do_propose |= pending.check_health(); |
7c673cae FG |
2238 | |
2239 | // expand mds cluster (add new nodes to @in)? | |
28e407b8 | 2240 | for (auto &p : pending.filesystems) { |
1adf2230 | 2241 | do_propose |= maybe_expand_cluster(pending, p.second->fscid); |
7c673cae FG |
2242 | } |
2243 | ||
1adf2230 AA |
2244 | mono_time now = mono_clock::now(); |
2245 | if (last_tick == decltype(last_tick)::min()) { | |
7c673cae FG |
2246 | last_tick = now; |
2247 | } | |
1adf2230 | 2248 | chrono::duration<double> since_last = now-last_tick; |
7c673cae | 2249 | |
1adf2230 AA |
2250 | if (since_last.count() > |
2251 | (g_conf->mds_beacon_grace - g_conf->mds_beacon_interval)) { | |
7c673cae FG |
2252 | // This case handles either local slowness (calls being delayed |
2253 | // for whatever reason) or cluster election slowness (a long gap | |
2254 | // between calls while an election happened) | |
2255 | dout(4) << __func__ << ": resetting beacon timeouts due to mon delay " | |
2256 | "(slow election?) of " << now - last_tick << " seconds" << dendl; | |
1adf2230 AA |
2257 | for (auto &p : last_beacon) { |
2258 | p.second.stamp = now; | |
7c673cae FG |
2259 | } |
2260 | } | |
2261 | ||
2262 | last_tick = now; | |
2263 | ||
7c673cae | 2264 | // make sure last_beacon is fully populated |
28e407b8 | 2265 | for (auto &p : pending.mds_roles) { |
7c673cae | 2266 | auto &gid = p.first; |
1adf2230 AA |
2267 | last_beacon.emplace(std::piecewise_construct, |
2268 | std::forward_as_tuple(gid), | |
2269 | std::forward_as_tuple(mono_clock::now(), 0)); | |
7c673cae FG |
2270 | } |
2271 | ||
1adf2230 AA |
2272 | |
2273 | // check beacon timestamps | |
c07f9fc5 FG |
2274 | bool propose_osdmap = false; |
2275 | bool osdmap_writeable = mon->osdmon()->is_writeable(); | |
1adf2230 AA |
2276 | for (auto it = last_beacon.begin(); it != last_beacon.end(); ) { |
2277 | mds_gid_t gid = it->first; | |
2278 | auto beacon_info = it->second; | |
2279 | chrono::duration<double> since_last = now-beacon_info.stamp; | |
7c673cae | 2280 | |
28e407b8 | 2281 | if (!pending.gid_exists(gid)) { |
c07f9fc5 | 2282 | // clean it out |
1adf2230 | 2283 | it = last_beacon.erase(it); |
c07f9fc5 | 2284 | continue; |
7c673cae FG |
2285 | } |
2286 | ||
1adf2230 AA |
2287 | |
2288 | if (since_last.count() >= g_conf->mds_beacon_grace) { | |
28e407b8 | 2289 | auto &info = pending.get_info_gid(gid); |
c07f9fc5 FG |
2290 | dout(1) << "no beacon from mds." << info.rank << "." << info.inc |
2291 | << " (gid: " << gid << " addr: " << info.addr | |
2292 | << " state: " << ceph_mds_state_name(info.state) << ")" | |
1adf2230 | 2293 | << " since " << since_last.count() << "s" << dendl; |
c07f9fc5 FG |
2294 | // If the OSDMap is writeable, we can blacklist things, so we can |
2295 | // try failing any laggy MDS daemons. Consider each one for failure. | |
2296 | if (osdmap_writeable) { | |
1adf2230 | 2297 | maybe_replace_gid(pending, gid, info, &do_propose, &propose_osdmap); |
c07f9fc5 | 2298 | } |
7c673cae | 2299 | } |
1adf2230 AA |
2300 | |
2301 | ++it; | |
7c673cae | 2302 | } |
c07f9fc5 FG |
2303 | if (propose_osdmap) { |
2304 | request_proposal(mon->osdmon()); | |
2305 | } | |
7c673cae | 2306 | |
28e407b8 AA |
2307 | for (auto &p : pending.filesystems) { |
2308 | auto &fs = p.second; | |
7c673cae | 2309 | if (!fs->mds_map.test_flag(CEPH_MDSMAP_DOWN)) { |
1adf2230 | 2310 | do_propose |= maybe_promote_standby(pending, fs); |
7c673cae FG |
2311 | } |
2312 | } | |
2313 | ||
2314 | if (do_propose) { | |
2315 | propose_pending(); | |
2316 | } | |
2317 | } | |
2318 | ||
2319 | /** | |
2320 | * finfo: the would-be follower | |
2321 | * leader_fs: the Filesystem containing the would-be leader | |
2322 | * ainfo: the would-be leader | |
2323 | */ | |
2324 | bool MDSMonitor::try_standby_replay( | |
1adf2230 | 2325 | FSMap &fsmap, |
7c673cae FG |
2326 | const MDSMap::mds_info_t& finfo, |
2327 | const Filesystem &leader_fs, | |
2328 | const MDSMap::mds_info_t& ainfo) | |
2329 | { | |
2330 | // someone else already following? | |
2331 | if (leader_fs.has_standby_replay(ainfo.global_id)) { | |
2332 | dout(20) << " mds." << ainfo.rank << " already has a follower" << dendl; | |
2333 | return false; | |
2334 | } else { | |
2335 | // Assign the new role to the standby | |
2336 | dout(10) << " setting to follow mds rank " << ainfo.rank << dendl; | |
1adf2230 | 2337 | fsmap.assign_standby_replay(finfo.global_id, leader_fs.fscid, ainfo.rank); |
7c673cae FG |
2338 | return true; |
2339 | } | |
2340 | } | |
2341 | ||
2342 | MDSMonitor::MDSMonitor(Monitor *mn, Paxos *p, string service_name) | |
2343 | : PaxosService(mn, p, service_name) | |
2344 | { | |
c07f9fc5 | 2345 | handlers = FileSystemCommandHandler::load(p); |
7c673cae FG |
2346 | } |
2347 | ||
2348 | void MDSMonitor::on_restart() | |
2349 | { | |
2350 | // Clear out the leader-specific state. | |
1adf2230 | 2351 | last_tick = mono_clock::now(); |
7c673cae FG |
2352 | last_beacon.clear(); |
2353 | } | |
2354 |