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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 | ||
11fdf7f2 | 15 | #include <regex> |
7c673cae FG |
16 | #include <sstream> |
17 | #include <boost/utility.hpp> | |
18 | ||
19 | #include "MDSMonitor.h" | |
20 | #include "FSCommands.h" | |
21 | #include "Monitor.h" | |
22 | #include "MonitorDBStore.h" | |
23 | #include "OSDMonitor.h" | |
7c673cae FG |
24 | |
25 | #include "common/strtol.h" | |
26 | #include "common/perf_counters.h" | |
27 | #include "common/config.h" | |
28 | #include "common/cmdparse.h" | |
29 | #include "messages/MMDSMap.h" | |
30 | #include "messages/MFSMap.h" | |
31 | #include "messages/MFSMapUser.h" | |
32 | #include "messages/MMDSLoadTargets.h" | |
33 | #include "messages/MMonCommand.h" | |
34 | #include "messages/MGenericMessage.h" | |
35 | ||
11fdf7f2 | 36 | #include "include/ceph_assert.h" |
7c673cae FG |
37 | #include "include/str_list.h" |
38 | #include "include/stringify.h" | |
39 | #include "mds/mdstypes.h" | |
40 | #include "Session.h" | |
41 | ||
42 | #define dout_subsys ceph_subsys_mon | |
43 | #undef dout_prefix | |
28e407b8 | 44 | #define dout_prefix _prefix(_dout, mon, get_fsmap()) |
9f95a23c TL |
45 | using namespace TOPNSPC::common; |
46 | ||
28e407b8 | 47 | static ostream& _prefix(std::ostream *_dout, Monitor *mon, const FSMap& fsmap) { |
7c673cae FG |
48 | return *_dout << "mon." << mon->name << "@" << mon->rank |
49 | << "(" << mon->get_state_name() | |
50 | << ").mds e" << fsmap.get_epoch() << " "; | |
51 | } | |
52 | ||
3efd9988 FG |
53 | static const string MDS_METADATA_PREFIX("mds_metadata"); |
54 | static const string MDS_HEALTH_PREFIX("mds_health"); | |
55 | ||
56 | ||
7c673cae FG |
57 | /* |
58 | * Specialized implementation of cmd_getval to allow us to parse | |
59 | * out strongly-typedef'd types | |
60 | */ | |
9f95a23c TL |
61 | namespace TOPNSPC::common { |
62 | template<> bool cmd_getval(const cmdmap_t& cmdmap, | |
31f18b77 | 63 | const std::string& k, mds_gid_t &val) |
7c673cae | 64 | { |
9f95a23c | 65 | return cmd_getval(cmdmap, k, (int64_t&)val); |
7c673cae FG |
66 | } |
67 | ||
9f95a23c | 68 | template<> bool cmd_getval(const cmdmap_t& cmdmap, |
31f18b77 | 69 | const std::string& k, mds_rank_t &val) |
7c673cae | 70 | { |
9f95a23c | 71 | return cmd_getval(cmdmap, k, (int64_t&)val); |
7c673cae FG |
72 | } |
73 | ||
9f95a23c | 74 | template<> bool cmd_getval(const cmdmap_t& cmdmap, |
31f18b77 | 75 | const std::string& k, MDSMap::DaemonState &val) |
7c673cae | 76 | { |
9f95a23c TL |
77 | return cmd_getval(cmdmap, k, (int64_t&)val); |
78 | } | |
7c673cae | 79 | } |
7c673cae FG |
80 | // my methods |
81 | ||
11fdf7f2 TL |
82 | template <int dblV> |
83 | void MDSMonitor::print_map(const FSMap& m) | |
7c673cae | 84 | { |
11fdf7f2 | 85 | dout(dblV) << "print_map\n"; |
7c673cae FG |
86 | m.print(*_dout); |
87 | *_dout << dendl; | |
88 | } | |
89 | ||
90 | // service methods | |
91 | void MDSMonitor::create_initial() | |
92 | { | |
93 | dout(10) << "create_initial" << dendl; | |
94 | } | |
95 | ||
11fdf7f2 | 96 | void MDSMonitor::get_store_prefixes(std::set<string>& s) const |
3efd9988 FG |
97 | { |
98 | s.insert(service_name); | |
99 | s.insert(MDS_METADATA_PREFIX); | |
100 | s.insert(MDS_HEALTH_PREFIX); | |
101 | } | |
7c673cae FG |
102 | |
103 | void MDSMonitor::update_from_paxos(bool *need_bootstrap) | |
104 | { | |
105 | version_t version = get_last_committed(); | |
28e407b8 | 106 | if (version == get_fsmap().epoch) |
7c673cae FG |
107 | return; |
108 | ||
109 | dout(10) << __func__ << " version " << version | |
28e407b8 | 110 | << ", my e " << get_fsmap().epoch << dendl; |
11fdf7f2 | 111 | ceph_assert(version > get_fsmap().epoch); |
7c673cae | 112 | |
224ce89b WB |
113 | load_health(); |
114 | ||
7c673cae FG |
115 | // read and decode |
116 | bufferlist fsmap_bl; | |
117 | fsmap_bl.clear(); | |
118 | int err = get_version(version, fsmap_bl); | |
11fdf7f2 | 119 | ceph_assert(err == 0); |
7c673cae | 120 | |
11fdf7f2 | 121 | ceph_assert(fsmap_bl.length() > 0); |
7c673cae | 122 | dout(10) << __func__ << " got " << version << dendl; |
28e407b8 | 123 | PaxosFSMap::decode(fsmap_bl); |
7c673cae FG |
124 | |
125 | // new map | |
91327a77 | 126 | dout(0) << "new map" << dendl; |
11fdf7f2 TL |
127 | print_map<0>(get_fsmap()); |
128 | if (!g_conf()->mon_mds_skip_sanity) { | |
28e407b8 | 129 | get_fsmap().sanity(); |
7c673cae FG |
130 | } |
131 | ||
132 | check_subs(); | |
7c673cae FG |
133 | } |
134 | ||
135 | void MDSMonitor::init() | |
136 | { | |
137 | (void)load_metadata(pending_metadata); | |
138 | } | |
139 | ||
140 | void MDSMonitor::create_pending() | |
141 | { | |
28e407b8 | 142 | auto &fsmap = PaxosFSMap::create_pending(); |
7c673cae | 143 | |
3efd9988 | 144 | if (mon->osdmon()->is_readable()) { |
28e407b8 AA |
145 | const auto &osdmap = mon->osdmon()->osdmap; |
146 | fsmap.sanitize([&osdmap](int64_t pool){return osdmap.have_pg_pool(pool);}); | |
3efd9988 FG |
147 | } |
148 | ||
28e407b8 | 149 | dout(10) << "create_pending e" << fsmap.epoch << dendl; |
7c673cae FG |
150 | } |
151 | ||
152 | void MDSMonitor::encode_pending(MonitorDBStore::TransactionRef t) | |
153 | { | |
28e407b8 AA |
154 | auto &pending = get_pending_fsmap_writeable(); |
155 | auto &epoch = pending.epoch; | |
7c673cae | 156 | |
28e407b8 | 157 | dout(10) << "encode_pending e" << epoch << dendl; |
7c673cae FG |
158 | |
159 | // print map iff 'debug mon = 30' or higher | |
11fdf7f2 TL |
160 | print_map<30>(pending); |
161 | if (!g_conf()->mon_mds_skip_sanity) { | |
28e407b8 | 162 | pending.sanity(); |
7c673cae FG |
163 | } |
164 | ||
165 | // Set 'modified' on maps modified this epoch | |
28e407b8 AA |
166 | for (auto &p : pending.filesystems) { |
167 | if (p.second->mds_map.epoch == epoch) { | |
168 | p.second->mds_map.modified = ceph_clock_now(); | |
7c673cae FG |
169 | } |
170 | } | |
171 | ||
172 | // apply to paxos | |
11fdf7f2 | 173 | ceph_assert(get_last_committed() + 1 == pending.epoch); |
28e407b8 AA |
174 | bufferlist pending_bl; |
175 | pending.encode(pending_bl, mon->get_quorum_con_features()); | |
7c673cae FG |
176 | |
177 | /* put everything in the transaction */ | |
28e407b8 AA |
178 | put_version(t, pending.epoch, pending_bl); |
179 | put_last_committed(t, pending.epoch); | |
7c673cae FG |
180 | |
181 | // Encode MDSHealth data | |
182 | for (std::map<uint64_t, MDSHealth>::iterator i = pending_daemon_health.begin(); | |
183 | i != pending_daemon_health.end(); ++i) { | |
184 | bufferlist bl; | |
185 | i->second.encode(bl); | |
186 | t->put(MDS_HEALTH_PREFIX, stringify(i->first), bl); | |
187 | } | |
188 | ||
189 | for (std::set<uint64_t>::iterator i = pending_daemon_health_rm.begin(); | |
190 | i != pending_daemon_health_rm.end(); ++i) { | |
191 | t->erase(MDS_HEALTH_PREFIX, stringify(*i)); | |
192 | } | |
193 | pending_daemon_health_rm.clear(); | |
1adf2230 | 194 | remove_from_metadata(pending, t); |
224ce89b WB |
195 | |
196 | // health | |
197 | health_check_map_t new_checks; | |
28e407b8 | 198 | const auto &info_map = pending.get_mds_info(); |
224ce89b WB |
199 | for (const auto &i : info_map) { |
200 | const auto &gid = i.first; | |
201 | const auto &info = i.second; | |
202 | if (pending_daemon_health_rm.count(gid)) { | |
203 | continue; | |
204 | } | |
205 | MDSHealth health; | |
206 | auto p = pending_daemon_health.find(gid); | |
207 | if (p != pending_daemon_health.end()) { | |
208 | health = p->second; | |
209 | } else { | |
210 | bufferlist bl; | |
211 | mon->store->get(MDS_HEALTH_PREFIX, stringify(gid), bl); | |
212 | if (!bl.length()) { | |
213 | derr << "Missing health data for MDS " << gid << dendl; | |
214 | continue; | |
215 | } | |
11fdf7f2 | 216 | auto bl_i = bl.cbegin(); |
224ce89b WB |
217 | health.decode(bl_i); |
218 | } | |
219 | for (const auto &metric : health.metrics) { | |
9f95a23c | 220 | const auto rank = info.rank; |
224ce89b WB |
221 | health_check_t *check = &new_checks.get_or_add( |
222 | mds_metric_name(metric.type), | |
223 | metric.sev, | |
9f95a23c TL |
224 | mds_metric_summary(metric.type), |
225 | 1); | |
224ce89b WB |
226 | ostringstream ss; |
227 | ss << "mds" << info.name << "(mds." << rank << "): " << metric.message; | |
28e407b8 AA |
228 | bool first = true; |
229 | for (auto &p : metric.metadata) { | |
230 | if (first) { | |
231 | ss << " "; | |
232 | } else { | |
224ce89b | 233 | ss << ", "; |
28e407b8 AA |
234 | } |
235 | ss << p.first << ": " << p.second; | |
236 | first = false; | |
224ce89b WB |
237 | } |
238 | check->detail.push_back(ss.str()); | |
239 | } | |
240 | } | |
28e407b8 | 241 | pending.get_health_checks(&new_checks); |
224ce89b | 242 | for (auto& p : new_checks.checks) { |
11fdf7f2 | 243 | p.second.summary = std::regex_replace( |
224ce89b | 244 | p.second.summary, |
11fdf7f2 | 245 | std::regex("%num%"), |
224ce89b | 246 | stringify(p.second.detail.size())); |
11fdf7f2 | 247 | p.second.summary = std::regex_replace( |
224ce89b | 248 | p.second.summary, |
11fdf7f2 | 249 | std::regex("%plurals%"), |
224ce89b | 250 | p.second.detail.size() > 1 ? "s" : ""); |
11fdf7f2 | 251 | p.second.summary = std::regex_replace( |
224ce89b | 252 | p.second.summary, |
11fdf7f2 | 253 | std::regex("%isorare%"), |
224ce89b | 254 | p.second.detail.size() > 1 ? "are" : "is"); |
11fdf7f2 | 255 | p.second.summary = std::regex_replace( |
181888fb | 256 | p.second.summary, |
11fdf7f2 | 257 | std::regex("%hasorhave%"), |
181888fb | 258 | p.second.detail.size() > 1 ? "have" : "has"); |
224ce89b WB |
259 | } |
260 | encode_health(new_checks, t); | |
7c673cae FG |
261 | } |
262 | ||
11fdf7f2 | 263 | version_t MDSMonitor::get_trim_to() const |
7c673cae FG |
264 | { |
265 | version_t floor = 0; | |
11fdf7f2 TL |
266 | if (g_conf()->mon_mds_force_trim_to > 0 && |
267 | g_conf()->mon_mds_force_trim_to < (int)get_last_committed()) { | |
268 | floor = g_conf()->mon_mds_force_trim_to; | |
7c673cae FG |
269 | dout(10) << __func__ << " explicit mon_mds_force_trim_to = " |
270 | << floor << dendl; | |
271 | } | |
272 | ||
11fdf7f2 | 273 | unsigned max = g_conf()->mon_max_mdsmap_epochs; |
7c673cae FG |
274 | version_t last = get_last_committed(); |
275 | ||
276 | if (last - get_first_committed() > max && floor < last - max) | |
277 | return last - max; | |
278 | return floor; | |
279 | } | |
280 | ||
7c673cae FG |
281 | bool MDSMonitor::preprocess_query(MonOpRequestRef op) |
282 | { | |
283 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 284 | auto m = op->get_req<PaxosServiceMessage>(); |
11fdf7f2 TL |
285 | dout(10) << "preprocess_query " << *m << " from " << m->get_orig_source() |
286 | << " " << m->get_orig_source_addrs() << dendl; | |
7c673cae FG |
287 | |
288 | switch (m->get_type()) { | |
289 | ||
290 | case MSG_MDS_BEACON: | |
291 | return preprocess_beacon(op); | |
292 | ||
293 | case MSG_MON_COMMAND: | |
f64942e4 AA |
294 | try { |
295 | return preprocess_command(op); | |
11fdf7f2 | 296 | } catch (const bad_cmd_get& e) { |
f64942e4 AA |
297 | bufferlist bl; |
298 | mon->reply_command(op, -EINVAL, e.what(), bl, get_last_committed()); | |
299 | return true; | |
300 | } | |
7c673cae FG |
301 | |
302 | case MSG_MDS_OFFLOAD_TARGETS: | |
303 | return preprocess_offload_targets(op); | |
304 | ||
305 | default: | |
306 | ceph_abort(); | |
307 | return true; | |
308 | } | |
309 | } | |
310 | ||
311 | void MDSMonitor::_note_beacon(MMDSBeacon *m) | |
312 | { | |
313 | mds_gid_t gid = mds_gid_t(m->get_global_id()); | |
314 | version_t seq = m->get_seq(); | |
315 | ||
91327a77 | 316 | dout(5) << "_note_beacon " << *m << " noting time" << dendl; |
1adf2230 AA |
317 | auto &beacon = last_beacon[gid]; |
318 | beacon.stamp = mono_clock::now(); | |
319 | beacon.seq = seq; | |
7c673cae FG |
320 | } |
321 | ||
322 | bool MDSMonitor::preprocess_beacon(MonOpRequestRef op) | |
323 | { | |
324 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 325 | auto m = op->get_req<MMDSBeacon>(); |
7c673cae FG |
326 | MDSMap::DaemonState state = m->get_state(); |
327 | mds_gid_t gid = m->get_global_id(); | |
328 | version_t seq = m->get_seq(); | |
329 | MDSMap::mds_info_t info; | |
330 | epoch_t effective_epoch = 0; | |
331 | ||
1adf2230 | 332 | const auto &fsmap = get_fsmap(); |
28e407b8 | 333 | |
7c673cae | 334 | // check privileges, ignore if fails |
11fdf7f2 TL |
335 | MonSession *session = op->get_session(); |
336 | if (!session) | |
337 | goto ignore; | |
7c673cae FG |
338 | if (!session->is_capable("mds", MON_CAP_X)) { |
339 | dout(0) << "preprocess_beacon got MMDSBeacon from entity with insufficient privileges " | |
340 | << session->caps << dendl; | |
341 | goto ignore; | |
342 | } | |
343 | ||
344 | if (m->get_fsid() != mon->monmap->fsid) { | |
345 | dout(0) << "preprocess_beacon on fsid " << m->get_fsid() << " != " << mon->monmap->fsid << dendl; | |
346 | goto ignore; | |
347 | } | |
348 | ||
91327a77 | 349 | dout(5) << "preprocess_beacon " << *m |
11fdf7f2 TL |
350 | << " from " << m->get_orig_source() |
351 | << " " << m->get_orig_source_addrs() | |
7c673cae FG |
352 | << " " << m->get_compat() |
353 | << dendl; | |
354 | ||
355 | // make sure the address has a port | |
356 | if (m->get_orig_source_addr().get_port() == 0) { | |
357 | dout(1) << " ignoring boot message without a port" << dendl; | |
358 | goto ignore; | |
359 | } | |
360 | ||
361 | // check compat | |
362 | if (!m->get_compat().writeable(fsmap.compat)) { | |
11fdf7f2 TL |
363 | dout(1) << " mds " << m->get_orig_source() |
364 | << " " << m->get_orig_source_addrs() | |
365 | << " can't write to fsmap " << fsmap.compat << dendl; | |
7c673cae FG |
366 | goto ignore; |
367 | } | |
368 | ||
369 | // fw to leader? | |
28e407b8 | 370 | if (!is_leader()) |
7c673cae FG |
371 | return false; |
372 | ||
373 | // booted, but not in map? | |
28e407b8 | 374 | if (!fsmap.gid_exists(gid)) { |
7c673cae FG |
375 | if (state != MDSMap::STATE_BOOT) { |
376 | dout(7) << "mds_beacon " << *m << " is not in fsmap (state " | |
377 | << ceph_mds_state_name(state) << ")" << dendl; | |
378 | ||
1adf2230 AA |
379 | /* We can't send an MDSMap this MDS was a part of because we no longer |
380 | * know which FS it was part of. Nor does this matter. Sending an empty | |
381 | * MDSMap is sufficient for getting the MDS to respawn. | |
382 | */ | |
7c673cae FG |
383 | MDSMap null_map; |
384 | null_map.epoch = fsmap.epoch; | |
385 | null_map.compat = fsmap.compat; | |
9f95a23c | 386 | auto m = make_message<MMDSMap>(mon->monmap->fsid, null_map); |
11fdf7f2 | 387 | mon->send_reply(op, m.detach()); |
7c673cae FG |
388 | return true; |
389 | } else { | |
390 | return false; // not booted yet. | |
391 | } | |
392 | } | |
393 | dout(10) << __func__ << ": GID exists in map: " << gid << dendl; | |
28e407b8 | 394 | info = fsmap.get_info_gid(gid); |
7c673cae FG |
395 | |
396 | // old seq? | |
397 | if (info.state_seq > seq) { | |
398 | dout(7) << "mds_beacon " << *m << " has old seq, ignoring" << dendl; | |
399 | goto ignore; | |
400 | } | |
401 | ||
402 | // Work out the latest epoch that this daemon should have seen | |
403 | { | |
28e407b8 | 404 | fs_cluster_id_t fscid = fsmap.mds_roles.at(gid); |
7c673cae | 405 | if (fscid == FS_CLUSTER_ID_NONE) { |
28e407b8 | 406 | effective_epoch = fsmap.standby_epochs.at(gid); |
7c673cae | 407 | } else { |
28e407b8 | 408 | effective_epoch = fsmap.get_filesystem(fscid)->mds_map.epoch; |
7c673cae FG |
409 | } |
410 | if (effective_epoch != m->get_last_epoch_seen()) { | |
411 | dout(10) << "mds_beacon " << *m | |
412 | << " ignoring requested state, because mds hasn't seen latest map" << dendl; | |
413 | goto reply; | |
414 | } | |
415 | } | |
416 | ||
417 | if (info.laggy()) { | |
418 | _note_beacon(m); | |
419 | return false; // no longer laggy, need to update map. | |
420 | } | |
421 | if (state == MDSMap::STATE_BOOT) { | |
422 | // ignore, already booted. | |
423 | goto ignore; | |
424 | } | |
9f95a23c TL |
425 | |
426 | // did the join_fscid change | |
427 | if (m->get_fs().size()) { | |
428 | fs_cluster_id_t fscid = FS_CLUSTER_ID_NONE; | |
429 | auto f = fsmap.get_filesystem(m->get_fs()); | |
430 | if (f) { | |
431 | fscid = f->fscid; | |
432 | } | |
433 | if (info.join_fscid != fscid) { | |
434 | dout(10) << __func__ << " standby mds_join_fs changed to " << fscid | |
435 | << " (" << m->get_fs() << ")" << dendl; | |
436 | _note_beacon(m); | |
437 | return false; | |
438 | } | |
439 | } else { | |
440 | if (info.join_fscid != FS_CLUSTER_ID_NONE) { | |
441 | dout(10) << __func__ << " standby mds_join_fs was cleared" << dendl; | |
442 | _note_beacon(m); | |
443 | return false; | |
444 | } | |
445 | } | |
446 | ||
7c673cae FG |
447 | // is there a state change here? |
448 | if (info.state != state) { | |
449 | // legal state change? | |
450 | if ((info.state == MDSMap::STATE_STANDBY || | |
451 | info.state == MDSMap::STATE_STANDBY_REPLAY) && state > 0) { | |
452 | dout(10) << "mds_beacon mds can't activate itself (" << ceph_mds_state_name(info.state) | |
453 | << " -> " << ceph_mds_state_name(state) << ")" << dendl; | |
454 | goto reply; | |
455 | } | |
456 | ||
457 | if ((state == MDSMap::STATE_STANDBY || state == MDSMap::STATE_STANDBY_REPLAY) | |
458 | && info.rank != MDS_RANK_NONE) | |
459 | { | |
460 | dout(4) << "mds_beacon MDS can't go back into standby after taking rank: " | |
461 | "held rank " << info.rank << " while requesting state " | |
462 | << ceph_mds_state_name(state) << dendl; | |
463 | goto reply; | |
464 | } | |
465 | ||
466 | _note_beacon(m); | |
467 | return false; | |
468 | } | |
469 | ||
470 | // Comparing known daemon health with m->get_health() | |
471 | // and return false (i.e. require proposal) if they | |
472 | // do not match, to update our stored | |
473 | if (!(pending_daemon_health[gid] == m->get_health())) { | |
91327a77 | 474 | dout(10) << __func__ << " health metrics for gid " << gid << " were updated" << dendl; |
7c673cae FG |
475 | _note_beacon(m); |
476 | return false; | |
477 | } | |
478 | ||
479 | reply: | |
480 | // note time and reply | |
11fdf7f2 | 481 | ceph_assert(effective_epoch > 0); |
7c673cae | 482 | _note_beacon(m); |
11fdf7f2 | 483 | { |
9f95a23c | 484 | auto beacon = make_message<MMDSBeacon>(mon->monmap->fsid, |
11fdf7f2 TL |
485 | m->get_global_id(), m->get_name(), effective_epoch, |
486 | state, seq, CEPH_FEATURES_SUPPORTED_DEFAULT); | |
487 | mon->send_reply(op, beacon.detach()); | |
488 | } | |
7c673cae FG |
489 | return true; |
490 | ||
491 | ignore: | |
492 | // I won't reply this beacon, drop it. | |
493 | mon->no_reply(op); | |
494 | return true; | |
495 | } | |
496 | ||
497 | bool MDSMonitor::preprocess_offload_targets(MonOpRequestRef op) | |
498 | { | |
499 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 500 | auto m = op->get_req<MMDSLoadTargets>(); |
7c673cae | 501 | dout(10) << "preprocess_offload_targets " << *m << " from " << m->get_orig_source() << dendl; |
28e407b8 | 502 | |
1adf2230 | 503 | const auto &fsmap = get_fsmap(); |
7c673cae FG |
504 | |
505 | // check privileges, ignore message if fails | |
11fdf7f2 | 506 | MonSession *session = op->get_session(); |
7c673cae | 507 | if (!session) |
1adf2230 | 508 | goto ignore; |
7c673cae FG |
509 | if (!session->is_capable("mds", MON_CAP_X)) { |
510 | dout(0) << "preprocess_offload_targets got MMDSLoadTargets from entity with insufficient caps " | |
511 | << session->caps << dendl; | |
1adf2230 | 512 | goto ignore; |
7c673cae FG |
513 | } |
514 | ||
515 | if (fsmap.gid_exists(m->global_id) && | |
516 | m->targets == fsmap.get_info_gid(m->global_id).export_targets) | |
1adf2230 | 517 | goto ignore; |
7c673cae FG |
518 | |
519 | return false; | |
520 | ||
1adf2230 AA |
521 | ignore: |
522 | mon->no_reply(op); | |
7c673cae FG |
523 | return true; |
524 | } | |
525 | ||
526 | ||
527 | bool MDSMonitor::prepare_update(MonOpRequestRef op) | |
528 | { | |
529 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 530 | auto m = op->get_req<PaxosServiceMessage>(); |
7c673cae FG |
531 | dout(7) << "prepare_update " << *m << dendl; |
532 | ||
533 | switch (m->get_type()) { | |
534 | ||
535 | case MSG_MDS_BEACON: | |
536 | return prepare_beacon(op); | |
537 | ||
538 | case MSG_MON_COMMAND: | |
f64942e4 AA |
539 | try { |
540 | return prepare_command(op); | |
11fdf7f2 | 541 | } catch (const bad_cmd_get& e) { |
f64942e4 AA |
542 | bufferlist bl; |
543 | mon->reply_command(op, -EINVAL, e.what(), bl, get_last_committed()); | |
544 | return true; | |
545 | } | |
7c673cae FG |
546 | |
547 | case MSG_MDS_OFFLOAD_TARGETS: | |
548 | return prepare_offload_targets(op); | |
549 | ||
550 | default: | |
551 | ceph_abort(); | |
552 | } | |
553 | ||
554 | return true; | |
555 | } | |
556 | ||
557 | bool MDSMonitor::prepare_beacon(MonOpRequestRef op) | |
558 | { | |
559 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 560 | auto m = op->get_req<MMDSBeacon>(); |
7c673cae | 561 | // -- this is an update -- |
11fdf7f2 TL |
562 | dout(12) << "prepare_beacon " << *m << " from " << m->get_orig_source() |
563 | << " " << m->get_orig_source_addrs() << dendl; | |
564 | entity_addrvec_t addrs = m->get_orig_source_addrs(); | |
7c673cae FG |
565 | mds_gid_t gid = m->get_global_id(); |
566 | MDSMap::DaemonState state = m->get_state(); | |
567 | version_t seq = m->get_seq(); | |
568 | ||
28e407b8 AA |
569 | auto &pending = get_pending_fsmap_writeable(); |
570 | ||
91327a77 | 571 | dout(15) << __func__ << " got health from gid " << gid << " with " << m->get_health().metrics.size() << " metrics." << dendl; |
7c673cae FG |
572 | |
573 | // Calculate deltas of health metrics created and removed | |
574 | // Do this by type rather than MDSHealthMetric equality, because messages can | |
575 | // change a lot when they include e.g. a number of items. | |
576 | const auto &old_health = pending_daemon_health[gid].metrics; | |
577 | const auto &new_health = m->get_health().metrics; | |
578 | ||
579 | std::set<mds_metric_t> old_types; | |
580 | for (const auto &i : old_health) { | |
581 | old_types.insert(i.type); | |
582 | } | |
583 | ||
584 | std::set<mds_metric_t> new_types; | |
585 | for (const auto &i : new_health) { | |
586 | new_types.insert(i.type); | |
587 | } | |
588 | ||
589 | for (const auto &new_metric: new_health) { | |
590 | if (old_types.count(new_metric.type) == 0) { | |
11fdf7f2 | 591 | dout(10) << "MDS health message (" << m->get_orig_source() |
28e407b8 | 592 | << "): " << new_metric.sev << " " << new_metric.message << dendl; |
7c673cae FG |
593 | } |
594 | } | |
595 | ||
596 | // Log the disappearance of health messages at INFO | |
597 | for (const auto &old_metric : old_health) { | |
598 | if (new_types.count(old_metric.type) == 0) { | |
599 | mon->clog->info() << "MDS health message cleared (" | |
11fdf7f2 | 600 | << m->get_orig_source() << "): " << old_metric.message; |
7c673cae FG |
601 | } |
602 | } | |
603 | ||
604 | // Store health | |
605 | pending_daemon_health[gid] = m->get_health(); | |
606 | ||
607 | // boot? | |
608 | if (state == MDSMap::STATE_BOOT) { | |
609 | // zap previous instance of this name? | |
11fdf7f2 | 610 | if (g_conf()->mds_enforce_unique_name) { |
7c673cae | 611 | bool failed_mds = false; |
28e407b8 | 612 | while (mds_gid_t existing = pending.find_mds_gid_by_name(m->get_name())) { |
7c673cae FG |
613 | if (!mon->osdmon()->is_writeable()) { |
614 | mon->osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
615 | return false; | |
616 | } | |
d2e6a577 | 617 | const MDSMap::mds_info_t &existing_info = |
28e407b8 | 618 | pending.get_info_gid(existing); |
d2e6a577 | 619 | mon->clog->info() << existing_info.human_name() << " restarted"; |
1adf2230 | 620 | fail_mds_gid(pending, existing); |
7c673cae FG |
621 | failed_mds = true; |
622 | } | |
623 | if (failed_mds) { | |
11fdf7f2 | 624 | ceph_assert(mon->osdmon()->is_writeable()); |
7c673cae FG |
625 | request_proposal(mon->osdmon()); |
626 | } | |
627 | } | |
628 | ||
629 | // Add this daemon to the map | |
28e407b8 | 630 | if (pending.mds_roles.count(gid) == 0) { |
7c673cae FG |
631 | MDSMap::mds_info_t new_info; |
632 | new_info.global_id = gid; | |
633 | new_info.name = m->get_name(); | |
11fdf7f2 | 634 | new_info.addrs = addrs; |
7c673cae FG |
635 | new_info.mds_features = m->get_mds_features(); |
636 | new_info.state = MDSMap::STATE_STANDBY; | |
637 | new_info.state_seq = seq; | |
28e407b8 | 638 | pending.insert(new_info); |
9f95a23c TL |
639 | if (m->get_fs().size()) { |
640 | fs_cluster_id_t fscid = FS_CLUSTER_ID_NONE; | |
641 | auto f = pending.get_filesystem(m->get_fs()); | |
642 | if (f) { | |
643 | fscid = f->fscid; | |
644 | } | |
645 | new_info.join_fscid = fscid; | |
646 | } | |
7c673cae FG |
647 | } |
648 | ||
7c673cae | 649 | // initialize the beacon timer |
1adf2230 AA |
650 | auto &beacon = last_beacon[gid]; |
651 | beacon.stamp = mono_clock::now(); | |
652 | beacon.seq = seq; | |
7c673cae FG |
653 | |
654 | // new incompat? | |
28e407b8 AA |
655 | if (!pending.compat.writeable(m->get_compat())) { |
656 | dout(10) << " fsmap " << pending.compat | |
7c673cae FG |
657 | << " can't write to new mds' " << m->get_compat() |
658 | << ", updating fsmap and killing old mds's" | |
659 | << dendl; | |
28e407b8 | 660 | pending.update_compat(m->get_compat()); |
7c673cae FG |
661 | } |
662 | ||
663 | update_metadata(m->get_global_id(), m->get_sys_info()); | |
664 | } else { | |
665 | // state update | |
91327a77 AA |
666 | |
667 | if (!pending.gid_exists(gid)) { | |
668 | /* gid has been removed from pending, send null map */ | |
669 | dout(5) << "mds_beacon " << *m << " is not in fsmap (state " | |
670 | << ceph_mds_state_name(state) << ")" << dendl; | |
671 | ||
672 | /* We can't send an MDSMap this MDS was a part of because we no longer | |
673 | * know which FS it was part of. Nor does this matter. Sending an empty | |
674 | * MDSMap is sufficient for getting the MDS to respawn. | |
675 | */ | |
9f95a23c | 676 | wait_for_finished_proposal(op, new LambdaContext([op, this](int r){ |
91327a77 AA |
677 | if (r >= 0) { |
678 | const auto& fsmap = get_fsmap(); | |
679 | MDSMap null_map; | |
680 | null_map.epoch = fsmap.epoch; | |
681 | null_map.compat = fsmap.compat; | |
9f95a23c | 682 | auto m = make_message<MMDSMap>(mon->monmap->fsid, null_map); |
11fdf7f2 | 683 | mon->send_reply(op, m.detach()); |
91327a77 AA |
684 | } else { |
685 | dispatch(op); // try again | |
686 | } | |
687 | })); | |
688 | return true; | |
689 | } | |
690 | ||
11fdf7f2 | 691 | const auto& info = pending.get_info_gid(gid); |
f64942e4 AA |
692 | if (info.state == MDSMap::STATE_STOPPING && |
693 | state != MDSMap::STATE_STOPPING && | |
694 | state != MDSMap::STATE_STOPPED) { | |
7c673cae FG |
695 | // we can't transition to any other states from STOPPING |
696 | dout(0) << "got beacon for MDS in STATE_STOPPING, ignoring requested state change" | |
697 | << dendl; | |
698 | _note_beacon(m); | |
699 | return true; | |
700 | } | |
701 | ||
702 | if (info.laggy()) { | |
11fdf7f2 TL |
703 | dout(1) << "prepare_beacon clearing laggy flag on " << addrs << dendl; |
704 | pending.modify_daemon(info.global_id, [](auto& info) | |
7c673cae | 705 | { |
11fdf7f2 | 706 | info.clear_laggy(); |
7c673cae FG |
707 | } |
708 | ); | |
709 | } | |
9f95a23c | 710 | |
91327a77 | 711 | dout(5) << "prepare_beacon mds." << info.rank |
7c673cae FG |
712 | << " " << ceph_mds_state_name(info.state) |
713 | << " -> " << ceph_mds_state_name(state) | |
7c673cae | 714 | << dendl; |
9f95a23c TL |
715 | |
716 | fs_cluster_id_t fscid = FS_CLUSTER_ID_NONE; | |
717 | if (m->get_fs().size()) { | |
718 | auto f = pending.get_filesystem(m->get_fs()); | |
719 | if (f) { | |
720 | fscid = f->fscid; | |
721 | } | |
722 | } | |
723 | pending.modify_daemon(gid, [fscid](auto& info) { | |
724 | info.join_fscid = fscid; | |
725 | }); | |
726 | ||
7c673cae | 727 | if (state == MDSMap::STATE_STOPPED) { |
28e407b8 AA |
728 | const auto fscid = pending.mds_roles.at(gid); |
729 | const auto &fs = pending.get_filesystem(fscid); | |
181888fb | 730 | |
d2e6a577 | 731 | mon->clog->info() << info.human_name() << " finished " |
11fdf7f2 | 732 | << "stopping rank " << info.rank << " in filesystem " |
d2e6a577 | 733 | << fs->mds_map.fs_name << " (now has " |
181888fb | 734 | << fs->mds_map.get_num_in_mds() - 1 << " ranks)"; |
d2e6a577 | 735 | |
28e407b8 | 736 | auto erased = pending.stop(gid); |
7c673cae FG |
737 | erased.push_back(gid); |
738 | ||
9f95a23c | 739 | for (const auto& erased_gid : erased) { |
7c673cae FG |
740 | last_beacon.erase(erased_gid); |
741 | if (pending_daemon_health.count(erased_gid)) { | |
742 | pending_daemon_health.erase(erased_gid); | |
743 | pending_daemon_health_rm.insert(erased_gid); | |
744 | } | |
745 | } | |
d2e6a577 FG |
746 | |
747 | ||
7c673cae FG |
748 | } else if (state == MDSMap::STATE_DAMAGED) { |
749 | if (!mon->osdmon()->is_writeable()) { | |
91327a77 | 750 | dout(1) << __func__ << ": DAMAGED from rank " << info.rank |
7c673cae FG |
751 | << " waiting for osdmon writeable to blacklist it" << dendl; |
752 | mon->osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
753 | return false; | |
754 | } | |
755 | ||
756 | // Record this MDS rank as damaged, so that other daemons | |
757 | // won't try to run it. | |
91327a77 | 758 | dout(0) << __func__ << ": marking rank " |
7c673cae FG |
759 | << info.rank << " damaged" << dendl; |
760 | ||
761 | utime_t until = ceph_clock_now(); | |
11fdf7f2 TL |
762 | until += g_conf().get_val<double>("mon_mds_blacklist_interval"); |
763 | const auto blacklist_epoch = mon->osdmon()->blacklist(info.addrs, until); | |
7c673cae | 764 | request_proposal(mon->osdmon()); |
28e407b8 | 765 | pending.damaged(gid, blacklist_epoch); |
7c673cae FG |
766 | last_beacon.erase(gid); |
767 | ||
768 | // Respond to MDS, so that it knows it can continue to shut down | |
9f95a23c | 769 | auto beacon = make_message<MMDSBeacon>( |
7c673cae | 770 | mon->monmap->fsid, m->get_global_id(), |
28e407b8 | 771 | m->get_name(), pending.get_epoch(), state, seq, |
11fdf7f2 TL |
772 | CEPH_FEATURES_SUPPORTED_DEFAULT); |
773 | mon->send_reply(op, beacon.detach()); | |
7c673cae FG |
774 | } else if (state == MDSMap::STATE_DNE) { |
775 | if (!mon->osdmon()->is_writeable()) { | |
91327a77 | 776 | dout(1) << __func__ << ": DNE from rank " << info.rank |
7c673cae FG |
777 | << " waiting for osdmon writeable to blacklist it" << dendl; |
778 | mon->osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
779 | return false; | |
780 | } | |
781 | ||
1adf2230 | 782 | fail_mds_gid(pending, gid); |
11fdf7f2 | 783 | ceph_assert(mon->osdmon()->is_writeable()); |
7c673cae FG |
784 | request_proposal(mon->osdmon()); |
785 | ||
786 | // Respond to MDS, so that it knows it can continue to shut down | |
9f95a23c | 787 | auto beacon = make_message<MMDSBeacon>(mon->monmap->fsid, |
11fdf7f2 TL |
788 | m->get_global_id(), m->get_name(), pending.get_epoch(), state, seq, |
789 | CEPH_FEATURES_SUPPORTED_DEFAULT); | |
790 | mon->send_reply(op, beacon.detach()); | |
7c673cae FG |
791 | } else if (info.state == MDSMap::STATE_STANDBY && state != info.state) { |
792 | // Standby daemons should never modify their own | |
793 | // state. Reject any attempts to do so. | |
794 | derr << "standby " << gid << " attempted to change state to " | |
795 | << ceph_mds_state_name(state) << ", rejecting" << dendl; | |
796 | return true; | |
797 | } else if (info.state != MDSMap::STATE_STANDBY && state != info.state && | |
798 | !MDSMap::state_transition_valid(info.state, state)) { | |
799 | // Validate state transitions for daemons that hold a rank | |
800 | derr << "daemon " << gid << " (rank " << info.rank << ") " | |
801 | << "reported invalid state transition " | |
802 | << ceph_mds_state_name(info.state) << " -> " | |
803 | << ceph_mds_state_name(state) << dendl; | |
804 | return true; | |
805 | } else { | |
b32b8144 | 806 | if (info.state != MDSMap::STATE_ACTIVE && state == MDSMap::STATE_ACTIVE) { |
28e407b8 AA |
807 | const auto &fscid = pending.mds_roles.at(gid); |
808 | const auto &fs = pending.get_filesystem(fscid); | |
d2e6a577 FG |
809 | mon->clog->info() << info.human_name() << " is now active in " |
810 | << "filesystem " << fs->mds_map.fs_name << " as rank " | |
811 | << info.rank; | |
812 | } | |
b32b8144 FG |
813 | |
814 | // Made it through special cases and validations, record the | |
815 | // daemon's reported state to the FSMap. | |
11fdf7f2 TL |
816 | pending.modify_daemon(gid, [state, seq](auto& info) { |
817 | info.state = state; | |
818 | info.state_seq = seq; | |
b32b8144 | 819 | }); |
7c673cae FG |
820 | } |
821 | } | |
822 | ||
91327a77 | 823 | dout(5) << "prepare_beacon pending map now:" << dendl; |
28e407b8 | 824 | print_map(pending); |
7c673cae | 825 | |
9f95a23c | 826 | wait_for_finished_proposal(op, new LambdaContext([op, this](int r){ |
7c673cae FG |
827 | if (r >= 0) |
828 | _updated(op); // success | |
829 | else if (r == -ECANCELED) { | |
830 | mon->no_reply(op); | |
831 | } else { | |
832 | dispatch(op); // try again | |
833 | } | |
834 | })); | |
835 | ||
836 | return true; | |
837 | } | |
838 | ||
839 | bool MDSMonitor::prepare_offload_targets(MonOpRequestRef op) | |
840 | { | |
28e407b8 AA |
841 | auto &pending = get_pending_fsmap_writeable(); |
842 | ||
7c673cae | 843 | op->mark_mdsmon_event(__func__); |
9f95a23c | 844 | auto m = op->get_req<MMDSLoadTargets>(); |
7c673cae | 845 | mds_gid_t gid = m->global_id; |
28e407b8 | 846 | if (pending.gid_has_rank(gid)) { |
7c673cae | 847 | dout(10) << "prepare_offload_targets " << gid << " " << m->targets << dendl; |
28e407b8 | 848 | pending.update_export_targets(gid, m->targets); |
7c673cae FG |
849 | } else { |
850 | dout(10) << "prepare_offload_targets " << gid << " not in map" << dendl; | |
851 | } | |
91327a77 | 852 | mon->no_reply(op); |
7c673cae FG |
853 | return true; |
854 | } | |
855 | ||
856 | bool MDSMonitor::should_propose(double& delay) | |
857 | { | |
858 | // delegate to PaxosService to assess whether we should propose | |
859 | return PaxosService::should_propose(delay); | |
860 | } | |
861 | ||
862 | void MDSMonitor::_updated(MonOpRequestRef op) | |
863 | { | |
28e407b8 | 864 | const auto &fsmap = get_fsmap(); |
7c673cae | 865 | op->mark_mdsmon_event(__func__); |
9f95a23c | 866 | auto m = op->get_req<MMDSBeacon>(); |
7c673cae | 867 | dout(10) << "_updated " << m->get_orig_source() << " " << *m << dendl; |
11fdf7f2 TL |
868 | mon->clog->debug() << m->get_orig_source() << " " |
869 | << m->get_orig_source_addrs() << " " | |
870 | << ceph_mds_state_name(m->get_state()); | |
7c673cae FG |
871 | |
872 | if (m->get_state() == MDSMap::STATE_STOPPED) { | |
873 | // send the map manually (they're out of the map, so they won't get it automatic) | |
874 | MDSMap null_map; | |
875 | null_map.epoch = fsmap.epoch; | |
876 | null_map.compat = fsmap.compat; | |
9f95a23c | 877 | auto m = make_message<MMDSMap>(mon->monmap->fsid, null_map); |
11fdf7f2 | 878 | mon->send_reply(op, m.detach()); |
7c673cae | 879 | } else { |
9f95a23c | 880 | auto beacon = make_message<MMDSBeacon>(mon->monmap->fsid, |
11fdf7f2 TL |
881 | m->get_global_id(), m->get_name(), fsmap.get_epoch(), |
882 | m->get_state(), m->get_seq(), CEPH_FEATURES_SUPPORTED_DEFAULT); | |
883 | mon->send_reply(op, beacon.detach()); | |
7c673cae FG |
884 | } |
885 | } | |
886 | ||
887 | void MDSMonitor::on_active() | |
888 | { | |
889 | tick(); | |
7c673cae | 890 | |
28e407b8 AA |
891 | if (is_leader()) { |
892 | mon->clog->debug() << "fsmap " << get_fsmap(); | |
224ce89b | 893 | } |
7c673cae FG |
894 | } |
895 | ||
7c673cae FG |
896 | void MDSMonitor::dump_info(Formatter *f) |
897 | { | |
898 | f->open_object_section("fsmap"); | |
28e407b8 | 899 | get_fsmap().dump(f); |
7c673cae FG |
900 | f->close_section(); |
901 | ||
902 | f->dump_unsigned("mdsmap_first_committed", get_first_committed()); | |
903 | f->dump_unsigned("mdsmap_last_committed", get_last_committed()); | |
904 | } | |
905 | ||
906 | bool MDSMonitor::preprocess_command(MonOpRequestRef op) | |
907 | { | |
908 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 909 | auto m = op->get_req<MMonCommand>(); |
7c673cae FG |
910 | int r = -1; |
911 | bufferlist rdata; | |
912 | stringstream ss, ds; | |
913 | ||
1adf2230 | 914 | const auto &fsmap = get_fsmap(); |
28e407b8 | 915 | |
11fdf7f2 | 916 | cmdmap_t cmdmap; |
7c673cae FG |
917 | if (!cmdmap_from_json(m->cmd, &cmdmap, ss)) { |
918 | // ss has reason for failure | |
919 | string rs = ss.str(); | |
920 | mon->reply_command(op, -EINVAL, rs, rdata, get_last_committed()); | |
921 | return true; | |
922 | } | |
923 | ||
924 | string prefix; | |
9f95a23c | 925 | cmd_getval(cmdmap, "prefix", prefix); |
7c673cae | 926 | string format; |
9f95a23c | 927 | cmd_getval(cmdmap, "format", format, string("plain")); |
1adf2230 | 928 | std::unique_ptr<Formatter> f(Formatter::create(format)); |
7c673cae | 929 | |
11fdf7f2 | 930 | MonSession *session = op->get_session(); |
7c673cae FG |
931 | if (!session) { |
932 | mon->reply_command(op, -EACCES, "access denied", rdata, get_last_committed()); | |
933 | return true; | |
934 | } | |
935 | ||
936 | if (prefix == "mds stat") { | |
937 | if (f) { | |
938 | f->open_object_section("mds_stat"); | |
939 | dump_info(f.get()); | |
940 | f->close_section(); | |
941 | f->flush(ds); | |
942 | } else { | |
943 | ds << fsmap; | |
944 | } | |
945 | r = 0; | |
11fdf7f2 TL |
946 | } else if (prefix == "mds ok-to-stop") { |
947 | vector<string> ids; | |
9f95a23c | 948 | if (!cmd_getval(cmdmap, "ids", ids)) { |
11fdf7f2 TL |
949 | r = -EINVAL; |
950 | ss << "must specify mds id"; | |
951 | goto out; | |
952 | } | |
953 | if (fsmap.is_any_degraded()) { | |
954 | ss << "one or more filesystems is currently degraded"; | |
955 | r = -EBUSY; | |
956 | goto out; | |
957 | } | |
958 | set<mds_gid_t> stopping; | |
959 | for (auto& id : ids) { | |
960 | ostringstream ess; | |
961 | mds_gid_t gid = gid_from_arg(fsmap, id, ess); | |
962 | if (gid == MDS_GID_NONE) { | |
963 | // the mds doesn't exist, but no file systems are unhappy, so losing it | |
964 | // can't have any effect. | |
965 | continue; | |
966 | } | |
967 | stopping.insert(gid); | |
968 | } | |
969 | set<mds_gid_t> active; | |
970 | set<mds_gid_t> standby; | |
971 | for (auto gid : stopping) { | |
972 | if (fsmap.gid_has_rank(gid)) { | |
973 | // ignore standby-replay daemons (at this level) | |
974 | if (!fsmap.is_standby_replay(gid)) { | |
975 | auto standby = fsmap.get_standby_replay(gid); | |
976 | if (standby == MDS_GID_NONE || | |
977 | stopping.count(standby)) { | |
978 | // no standby-replay, or we're also stopping the standby-replay | |
979 | // for this mds | |
980 | active.insert(gid); | |
981 | } | |
982 | } | |
7c673cae | 983 | } else { |
11fdf7f2 TL |
984 | // net loss of a standby |
985 | standby.insert(gid); | |
7c673cae FG |
986 | } |
987 | } | |
11fdf7f2 TL |
988 | if (fsmap.get_num_standby() - standby.size() < active.size()) { |
989 | r = -EBUSY; | |
990 | ss << "insufficent standby MDS daemons to stop active gids " | |
991 | << stringify(active) | |
992 | << " and/or standby gids " << stringify(standby);; | |
993 | goto out; | |
28e407b8 | 994 | } |
11fdf7f2 TL |
995 | r = 0; |
996 | ss << "should be safe to stop " << ids; | |
7c673cae FG |
997 | } else if (prefix == "fs dump") { |
998 | int64_t epocharg; | |
999 | epoch_t epoch; | |
1000 | ||
1adf2230 | 1001 | const FSMap *fsmapp = &fsmap; |
28e407b8 | 1002 | FSMap dummy; |
9f95a23c | 1003 | if (cmd_getval(cmdmap, "epoch", epocharg)) { |
7c673cae FG |
1004 | epoch = epocharg; |
1005 | bufferlist b; | |
1006 | int err = get_version(epoch, b); | |
1007 | if (err == -ENOENT) { | |
7c673cae | 1008 | r = -ENOENT; |
28e407b8 | 1009 | goto out; |
7c673cae | 1010 | } else { |
11fdf7f2 TL |
1011 | ceph_assert(err == 0); |
1012 | ceph_assert(b.length()); | |
28e407b8 AA |
1013 | dummy.decode(b); |
1014 | fsmapp = &dummy; | |
7c673cae FG |
1015 | } |
1016 | } | |
c07f9fc5 | 1017 | |
28e407b8 AA |
1018 | stringstream ds; |
1019 | if (f != NULL) { | |
1020 | f->open_object_section("fsmap"); | |
1021 | fsmapp->dump(f.get()); | |
1022 | f->close_section(); | |
1023 | f->flush(ds); | |
1024 | r = 0; | |
1025 | } else { | |
1026 | fsmapp->print(ds); | |
1027 | r = 0; | |
7c673cae | 1028 | } |
28e407b8 AA |
1029 | |
1030 | rdata.append(ds); | |
1031 | ss << "dumped fsmap epoch " << fsmapp->get_epoch(); | |
7c673cae FG |
1032 | } else if (prefix == "mds metadata") { |
1033 | if (!f) | |
1034 | f.reset(Formatter::create("json-pretty")); | |
1035 | ||
1036 | string who; | |
9f95a23c | 1037 | bool all = !cmd_getval(cmdmap, "who", who); |
7c673cae FG |
1038 | dout(1) << "all = " << all << dendl; |
1039 | if (all) { | |
1040 | r = 0; | |
1041 | // Dump all MDSs' metadata | |
1042 | const auto all_info = fsmap.get_mds_info(); | |
1043 | ||
1044 | f->open_array_section("mds_metadata"); | |
1045 | for(const auto &i : all_info) { | |
1046 | const auto &info = i.second; | |
1047 | ||
1048 | f->open_object_section("mds"); | |
1049 | f->dump_string("name", info.name); | |
1050 | std::ostringstream get_err; | |
1adf2230 | 1051 | r = dump_metadata(fsmap, info.name, f.get(), get_err); |
7c673cae FG |
1052 | if (r == -EINVAL || r == -ENOENT) { |
1053 | // Drop error, list what metadata we do have | |
1054 | dout(1) << get_err.str() << dendl; | |
1055 | r = 0; | |
1056 | } else if (r != 0) { | |
1057 | derr << "Unexpected error reading metadata: " << cpp_strerror(r) | |
1058 | << dendl; | |
1059 | ss << get_err.str(); | |
c07f9fc5 | 1060 | f->close_section(); |
7c673cae FG |
1061 | break; |
1062 | } | |
1063 | f->close_section(); | |
1064 | } | |
1065 | f->close_section(); | |
1066 | } else { | |
1067 | // Dump a single daemon's metadata | |
1068 | f->open_object_section("mds_metadata"); | |
1adf2230 | 1069 | r = dump_metadata(fsmap, who, f.get(), ss); |
7c673cae FG |
1070 | f->close_section(); |
1071 | } | |
1072 | f->flush(ds); | |
31f18b77 FG |
1073 | } else if (prefix == "mds versions") { |
1074 | if (!f) | |
1075 | f.reset(Formatter::create("json-pretty")); | |
1076 | count_metadata("ceph_version", f.get()); | |
1077 | f->flush(ds); | |
1078 | r = 0; | |
1079 | } else if (prefix == "mds count-metadata") { | |
1080 | if (!f) | |
1081 | f.reset(Formatter::create("json-pretty")); | |
1082 | string field; | |
9f95a23c | 1083 | cmd_getval(cmdmap, "property", field); |
31f18b77 FG |
1084 | count_metadata(field, f.get()); |
1085 | f->flush(ds); | |
1086 | r = 0; | |
7c673cae FG |
1087 | } else if (prefix == "mds compat show") { |
1088 | if (f) { | |
1089 | f->open_object_section("mds_compat"); | |
1090 | fsmap.compat.dump(f.get()); | |
1091 | f->close_section(); | |
1092 | f->flush(ds); | |
1093 | } else { | |
1094 | ds << fsmap.compat; | |
1095 | } | |
1096 | r = 0; | |
1097 | } else if (prefix == "fs get") { | |
1098 | string fs_name; | |
9f95a23c | 1099 | cmd_getval(cmdmap, "fs_name", fs_name); |
28e407b8 | 1100 | const auto &fs = fsmap.get_filesystem(fs_name); |
7c673cae FG |
1101 | if (fs == nullptr) { |
1102 | ss << "filesystem '" << fs_name << "' not found"; | |
1103 | r = -ENOENT; | |
1104 | } else { | |
1105 | if (f != nullptr) { | |
1106 | f->open_object_section("filesystem"); | |
1107 | fs->dump(f.get()); | |
1108 | f->close_section(); | |
1109 | f->flush(ds); | |
1110 | r = 0; | |
1111 | } else { | |
1112 | fs->print(ds); | |
1113 | r = 0; | |
1114 | } | |
1115 | } | |
1116 | } else if (prefix == "fs ls") { | |
1117 | if (f) { | |
1118 | f->open_array_section("filesystems"); | |
1adf2230 AA |
1119 | for (const auto &p : fsmap.filesystems) { |
1120 | const auto &fs = p.second; | |
1121 | f->open_object_section("filesystem"); | |
1122 | { | |
1123 | const MDSMap &mds_map = fs->mds_map; | |
1124 | f->dump_string("name", mds_map.fs_name); | |
1125 | /* Output both the names and IDs of pools, for use by | |
1126 | * humans and machines respectively */ | |
1127 | f->dump_string("metadata_pool", mon->osdmon()->osdmap.get_pool_name( | |
1128 | mds_map.metadata_pool)); | |
1129 | f->dump_int("metadata_pool_id", mds_map.metadata_pool); | |
1130 | f->open_array_section("data_pool_ids"); | |
1131 | for (const auto &id : mds_map.data_pools) { | |
1132 | f->dump_int("data_pool_id", id); | |
1133 | } | |
1134 | f->close_section(); | |
7c673cae | 1135 | |
1adf2230 AA |
1136 | f->open_array_section("data_pools"); |
1137 | for (const auto &id : mds_map.data_pools) { | |
1138 | const auto &name = mon->osdmon()->osdmap.get_pool_name(id); | |
1139 | f->dump_string("data_pool", name); | |
7c673cae FG |
1140 | } |
1141 | f->close_section(); | |
1142 | } | |
1adf2230 | 1143 | f->close_section(); |
7c673cae FG |
1144 | } |
1145 | f->close_section(); | |
1146 | f->flush(ds); | |
1147 | } else { | |
28e407b8 AA |
1148 | for (const auto &p : fsmap.filesystems) { |
1149 | const auto &fs = p.second; | |
7c673cae FG |
1150 | const MDSMap &mds_map = fs->mds_map; |
1151 | const string &md_pool_name = mon->osdmon()->osdmap.get_pool_name( | |
1152 | mds_map.metadata_pool); | |
1153 | ||
1154 | ds << "name: " << mds_map.fs_name << ", metadata pool: " | |
1155 | << md_pool_name << ", data pools: ["; | |
1adf2230 AA |
1156 | for (const auto &id : mds_map.data_pools) { |
1157 | const string &pool_name = mon->osdmon()->osdmap.get_pool_name(id); | |
7c673cae FG |
1158 | ds << pool_name << " "; |
1159 | } | |
1160 | ds << "]" << std::endl; | |
1161 | } | |
1162 | ||
1163 | if (fsmap.filesystems.empty()) { | |
1164 | ds << "No filesystems enabled" << std::endl; | |
1165 | } | |
1166 | } | |
1167 | r = 0; | |
1168 | } | |
1169 | ||
28e407b8 | 1170 | out: |
7c673cae FG |
1171 | if (r != -1) { |
1172 | rdata.append(ds); | |
1173 | string rs; | |
1174 | getline(ss, rs); | |
1175 | mon->reply_command(op, r, rs, rdata, get_last_committed()); | |
1176 | return true; | |
1177 | } else | |
1178 | return false; | |
1179 | } | |
1180 | ||
1adf2230 | 1181 | bool MDSMonitor::fail_mds_gid(FSMap &fsmap, mds_gid_t gid) |
7c673cae | 1182 | { |
9f95a23c | 1183 | const auto& info = fsmap.get_info_gid(gid); |
91327a77 | 1184 | dout(1) << "fail_mds_gid " << gid << " mds." << info.name << " role " << info.rank << dendl; |
7c673cae | 1185 | |
a8e16298 TL |
1186 | ceph_assert(mon->osdmon()->is_writeable()); |
1187 | ||
7c673cae FG |
1188 | epoch_t blacklist_epoch = 0; |
1189 | if (info.rank >= 0 && info.state != MDSMap::STATE_STANDBY_REPLAY) { | |
1190 | utime_t until = ceph_clock_now(); | |
11fdf7f2 TL |
1191 | until += g_conf().get_val<double>("mon_mds_blacklist_interval"); |
1192 | blacklist_epoch = mon->osdmon()->blacklist(info.addrs, until); | |
7c673cae FG |
1193 | } |
1194 | ||
1adf2230 | 1195 | fsmap.erase(gid, blacklist_epoch); |
7c673cae FG |
1196 | last_beacon.erase(gid); |
1197 | if (pending_daemon_health.count(gid)) { | |
1198 | pending_daemon_health.erase(gid); | |
1199 | pending_daemon_health_rm.insert(gid); | |
1200 | } | |
1201 | ||
1202 | return blacklist_epoch != 0; | |
1203 | } | |
1204 | ||
1adf2230 | 1205 | mds_gid_t MDSMonitor::gid_from_arg(const FSMap &fsmap, const std::string &arg, std::ostream &ss) |
7c673cae FG |
1206 | { |
1207 | // Try parsing as a role | |
1208 | mds_role_t role; | |
1209 | std::ostringstream ignore_err; // Don't spam 'ss' with parse_role errors | |
1adf2230 | 1210 | int r = fsmap.parse_role(arg, &role, ignore_err); |
7c673cae FG |
1211 | if (r == 0) { |
1212 | // See if a GID is assigned to this role | |
28e407b8 | 1213 | const auto &fs = fsmap.get_filesystem(role.fscid); |
11fdf7f2 | 1214 | ceph_assert(fs != nullptr); // parse_role ensures it exists |
7c673cae FG |
1215 | if (fs->mds_map.is_up(role.rank)) { |
1216 | dout(10) << __func__ << ": validated rank/GID " << role | |
1217 | << " as a rank" << dendl; | |
1218 | return fs->mds_map.get_mds_info(role.rank).global_id; | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | // Try parsing as a gid | |
1223 | std::string err; | |
1224 | unsigned long long maybe_gid = strict_strtoll(arg.c_str(), 10, &err); | |
1225 | if (!err.empty()) { | |
1226 | // Not a role or a GID, try as a daemon name | |
28e407b8 | 1227 | const MDSMap::mds_info_t *mds_info = fsmap.find_by_name(arg); |
7c673cae FG |
1228 | if (!mds_info) { |
1229 | ss << "MDS named '" << arg | |
1230 | << "' does not exist, or is not up"; | |
1231 | return MDS_GID_NONE; | |
1232 | } | |
1233 | dout(10) << __func__ << ": resolved MDS name '" << arg | |
1234 | << "' to GID " << mds_info->global_id << dendl; | |
1235 | return mds_info->global_id; | |
1236 | } else { | |
1237 | // Not a role, but parses as a an integer, might be a GID | |
1238 | dout(10) << __func__ << ": treating MDS reference '" << arg | |
1239 | << "' as an integer " << maybe_gid << dendl; | |
31f18b77 | 1240 | |
28e407b8 | 1241 | if (fsmap.gid_exists(mds_gid_t(maybe_gid))) { |
31f18b77 | 1242 | return mds_gid_t(maybe_gid); |
7c673cae FG |
1243 | } |
1244 | } | |
1245 | ||
1246 | dout(1) << __func__ << ": rank/GID " << arg | |
1247 | << " not a existent rank or GID" << dendl; | |
1248 | return MDS_GID_NONE; | |
1249 | } | |
1250 | ||
1adf2230 AA |
1251 | int MDSMonitor::fail_mds(FSMap &fsmap, std::ostream &ss, |
1252 | const std::string &arg, MDSMap::mds_info_t *failed_info) | |
7c673cae | 1253 | { |
11fdf7f2 | 1254 | ceph_assert(failed_info != nullptr); |
d2e6a577 | 1255 | |
1adf2230 | 1256 | mds_gid_t gid = gid_from_arg(fsmap, arg, ss); |
7c673cae FG |
1257 | if (gid == MDS_GID_NONE) { |
1258 | return 0; | |
1259 | } | |
1260 | if (!mon->osdmon()->is_writeable()) { | |
1261 | return -EAGAIN; | |
1262 | } | |
d2e6a577 FG |
1263 | |
1264 | // Take a copy of the info before removing the MDS from the map, | |
1265 | // so that the caller knows which mds (if any) they ended up removing. | |
1adf2230 | 1266 | *failed_info = fsmap.get_info_gid(gid); |
d2e6a577 | 1267 | |
1adf2230 | 1268 | fail_mds_gid(fsmap, gid); |
7c673cae | 1269 | ss << "failed mds gid " << gid; |
11fdf7f2 | 1270 | ceph_assert(mon->osdmon()->is_writeable()); |
7c673cae FG |
1271 | request_proposal(mon->osdmon()); |
1272 | return 0; | |
1273 | } | |
1274 | ||
1275 | bool MDSMonitor::prepare_command(MonOpRequestRef op) | |
1276 | { | |
1277 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 1278 | auto m = op->get_req<MMonCommand>(); |
7c673cae FG |
1279 | int r = -EINVAL; |
1280 | stringstream ss; | |
1281 | bufferlist rdata; | |
1282 | ||
11fdf7f2 | 1283 | cmdmap_t cmdmap; |
7c673cae FG |
1284 | if (!cmdmap_from_json(m->cmd, &cmdmap, ss)) { |
1285 | string rs = ss.str(); | |
1286 | mon->reply_command(op, -EINVAL, rs, rdata, get_last_committed()); | |
1287 | return true; | |
1288 | } | |
1289 | ||
1290 | string prefix; | |
9f95a23c | 1291 | cmd_getval(cmdmap, "prefix", prefix); |
7c673cae FG |
1292 | |
1293 | /* Refuse access if message not associated with a valid session */ | |
11fdf7f2 | 1294 | MonSession *session = op->get_session(); |
7c673cae FG |
1295 | if (!session) { |
1296 | mon->reply_command(op, -EACCES, "access denied", rdata, get_last_committed()); | |
1297 | return true; | |
1298 | } | |
1299 | ||
28e407b8 AA |
1300 | auto &pending = get_pending_fsmap_writeable(); |
1301 | ||
c07f9fc5 | 1302 | bool batched_propose = false; |
28e407b8 | 1303 | for (const auto &h : handlers) { |
7c673cae | 1304 | if (h->can_handle(prefix)) { |
c07f9fc5 FG |
1305 | batched_propose = h->batched_propose(); |
1306 | if (batched_propose) { | |
1307 | paxos->plug(); | |
1308 | } | |
28e407b8 | 1309 | r = h->handle(mon, pending, op, cmdmap, ss); |
c07f9fc5 FG |
1310 | if (batched_propose) { |
1311 | paxos->unplug(); | |
1312 | } | |
1313 | ||
7c673cae FG |
1314 | if (r == -EAGAIN) { |
1315 | // message has been enqueued for retry; return. | |
1316 | dout(4) << __func__ << " enqueue for retry by prepare_command" << dendl; | |
1317 | return false; | |
1318 | } else { | |
1319 | if (r == 0) { | |
1320 | // On successful updates, print the updated map | |
28e407b8 | 1321 | print_map(pending); |
7c673cae FG |
1322 | } |
1323 | // Successful or not, we're done: respond. | |
1324 | goto out; | |
1325 | } | |
1326 | } | |
1327 | } | |
1328 | ||
1adf2230 | 1329 | r = filesystem_command(pending, op, prefix, cmdmap, ss); |
7c673cae FG |
1330 | if (r >= 0) { |
1331 | goto out; | |
1332 | } else if (r == -EAGAIN) { | |
1333 | // Do not reply, the message has been enqueued for retry | |
1334 | dout(4) << __func__ << " enqueue for retry by filesystem_command" << dendl; | |
1335 | return false; | |
1336 | } else if (r != -ENOSYS) { | |
1337 | goto out; | |
1338 | } | |
1339 | ||
7c673cae FG |
1340 | if (r == -ENOSYS && ss.str().empty()) { |
1341 | ss << "unrecognized command"; | |
1342 | } | |
1343 | ||
1344 | out: | |
1345 | dout(4) << __func__ << " done, r=" << r << dendl; | |
1346 | /* Compose response */ | |
1347 | string rs; | |
1348 | getline(ss, rs); | |
1349 | ||
1350 | if (r >= 0) { | |
1351 | // success.. delay reply | |
1352 | wait_for_finished_proposal(op, new Monitor::C_Command(mon, op, r, rs, | |
1353 | get_last_committed() + 1)); | |
c07f9fc5 FG |
1354 | if (batched_propose) { |
1355 | force_immediate_propose(); | |
1356 | } | |
7c673cae FG |
1357 | return true; |
1358 | } else { | |
1359 | // reply immediately | |
1360 | mon->reply_command(op, r, rs, rdata, get_last_committed()); | |
1361 | return false; | |
1362 | } | |
1363 | } | |
1364 | ||
7c673cae | 1365 | int MDSMonitor::filesystem_command( |
1adf2230 | 1366 | FSMap &fsmap, |
7c673cae FG |
1367 | MonOpRequestRef op, |
1368 | std::string const &prefix, | |
11fdf7f2 | 1369 | const cmdmap_t& cmdmap, |
7c673cae FG |
1370 | std::stringstream &ss) |
1371 | { | |
1372 | dout(4) << __func__ << " prefix='" << prefix << "'" << dendl; | |
1373 | op->mark_mdsmon_event(__func__); | |
1374 | int r = 0; | |
1375 | string whostr; | |
9f95a23c | 1376 | cmd_getval(cmdmap, "role", whostr); |
7c673cae | 1377 | |
11fdf7f2 | 1378 | if (prefix == "mds set_state") { |
7c673cae | 1379 | mds_gid_t gid; |
9f95a23c | 1380 | if (!cmd_getval(cmdmap, "gid", gid)) { |
7c673cae | 1381 | ss << "error parsing 'gid' value '" |
11fdf7f2 | 1382 | << cmd_vartype_stringify(cmdmap.at("gid")) << "'"; |
7c673cae FG |
1383 | return -EINVAL; |
1384 | } | |
1385 | MDSMap::DaemonState state; | |
9f95a23c | 1386 | if (!cmd_getval(cmdmap, "state", state)) { |
7c673cae | 1387 | ss << "error parsing 'state' string value '" |
11fdf7f2 | 1388 | << cmd_vartype_stringify(cmdmap.at("state")) << "'"; |
7c673cae FG |
1389 | return -EINVAL; |
1390 | } | |
1adf2230 | 1391 | if (fsmap.gid_exists(gid)) { |
11fdf7f2 TL |
1392 | fsmap.modify_daemon(gid, [state](auto& info) { |
1393 | info.state = state; | |
7c673cae FG |
1394 | }); |
1395 | ss << "set mds gid " << gid << " to state " << state << " " | |
1396 | << ceph_mds_state_name(state); | |
1397 | return 0; | |
1398 | } | |
1399 | } else if (prefix == "mds fail") { | |
1400 | string who; | |
9f95a23c | 1401 | cmd_getval(cmdmap, "role_or_gid", who); |
d2e6a577 FG |
1402 | |
1403 | MDSMap::mds_info_t failed_info; | |
1adf2230 | 1404 | r = fail_mds(fsmap, ss, who, &failed_info); |
7c673cae FG |
1405 | if (r < 0 && r == -EAGAIN) { |
1406 | mon->osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
1407 | return -EAGAIN; // don't propose yet; wait for message to be retried | |
d2e6a577 FG |
1408 | } else if (r == 0) { |
1409 | // Only log if we really did something (not when was already gone) | |
1410 | if (failed_info.global_id != MDS_GID_NONE) { | |
1411 | mon->clog->info() << failed_info.human_name() << " marked failed by " | |
1412 | << op->get_session()->entity_name; | |
1413 | } | |
7c673cae FG |
1414 | } |
1415 | } else if (prefix == "mds rm") { | |
1416 | mds_gid_t gid; | |
9f95a23c | 1417 | if (!cmd_getval(cmdmap, "gid", gid)) { |
7c673cae | 1418 | ss << "error parsing 'gid' value '" |
11fdf7f2 | 1419 | << cmd_vartype_stringify(cmdmap.at("gid")) << "'"; |
7c673cae FG |
1420 | return -EINVAL; |
1421 | } | |
1adf2230 | 1422 | if (!fsmap.gid_exists(gid)) { |
11fdf7f2 | 1423 | ss << "mds gid " << gid << " does not exist"; |
7c673cae FG |
1424 | r = 0; |
1425 | } else { | |
1adf2230 | 1426 | const auto &info = fsmap.get_info_gid(gid); |
28e407b8 | 1427 | MDSMap::DaemonState state = info.state; |
7c673cae | 1428 | if (state > 0) { |
28e407b8 AA |
1429 | ss << "cannot remove active mds." << info.name |
1430 | << " rank " << info.rank; | |
7c673cae FG |
1431 | return -EBUSY; |
1432 | } else { | |
1adf2230 | 1433 | fsmap.erase(gid, {}); |
7c673cae FG |
1434 | ss << "removed mds gid " << gid; |
1435 | return 0; | |
1436 | } | |
1437 | } | |
1438 | } else if (prefix == "mds rmfailed") { | |
11fdf7f2 | 1439 | bool confirm = false; |
9f95a23c | 1440 | cmd_getval(cmdmap, "yes_i_really_mean_it", confirm); |
11fdf7f2 | 1441 | if (!confirm) { |
7c673cae FG |
1442 | ss << "WARNING: this can make your filesystem inaccessible! " |
1443 | "Add --yes-i-really-mean-it if you are sure you wish to continue."; | |
1444 | return -EPERM; | |
1445 | } | |
1446 | ||
1447 | std::string role_str; | |
9f95a23c | 1448 | cmd_getval(cmdmap, "role", role_str); |
7c673cae | 1449 | mds_role_t role; |
1adf2230 | 1450 | int r = fsmap.parse_role(role_str, &role, ss); |
7c673cae FG |
1451 | if (r < 0) { |
1452 | ss << "invalid role '" << role_str << "'"; | |
1453 | return -EINVAL; | |
1454 | } | |
1455 | ||
1adf2230 | 1456 | fsmap.modify_filesystem( |
7c673cae FG |
1457 | role.fscid, |
1458 | [role](std::shared_ptr<Filesystem> fs) | |
1459 | { | |
1460 | fs->mds_map.failed.erase(role.rank); | |
1461 | }); | |
1462 | ||
1463 | ss << "removed failed mds." << role; | |
1464 | return 0; | |
1465 | } else if (prefix == "mds compat rm_compat") { | |
1466 | int64_t f; | |
9f95a23c | 1467 | if (!cmd_getval(cmdmap, "feature", f)) { |
7c673cae | 1468 | ss << "error parsing feature value '" |
11fdf7f2 | 1469 | << cmd_vartype_stringify(cmdmap.at("feature")) << "'"; |
7c673cae FG |
1470 | return -EINVAL; |
1471 | } | |
1adf2230 | 1472 | if (fsmap.compat.compat.contains(f)) { |
7c673cae | 1473 | ss << "removing compat feature " << f; |
1adf2230 | 1474 | CompatSet modified = fsmap.compat; |
7c673cae | 1475 | modified.compat.remove(f); |
1adf2230 | 1476 | fsmap.update_compat(modified); |
7c673cae | 1477 | } else { |
1adf2230 | 1478 | ss << "compat feature " << f << " not present in " << fsmap.compat; |
7c673cae FG |
1479 | } |
1480 | r = 0; | |
1481 | } else if (prefix == "mds compat rm_incompat") { | |
1482 | int64_t f; | |
9f95a23c | 1483 | if (!cmd_getval(cmdmap, "feature", f)) { |
7c673cae | 1484 | ss << "error parsing feature value '" |
11fdf7f2 | 1485 | << cmd_vartype_stringify(cmdmap.at("feature")) << "'"; |
7c673cae FG |
1486 | return -EINVAL; |
1487 | } | |
1adf2230 | 1488 | if (fsmap.compat.incompat.contains(f)) { |
7c673cae | 1489 | ss << "removing incompat feature " << f; |
1adf2230 | 1490 | CompatSet modified = fsmap.compat; |
7c673cae | 1491 | modified.incompat.remove(f); |
1adf2230 | 1492 | fsmap.update_compat(modified); |
7c673cae | 1493 | } else { |
1adf2230 | 1494 | ss << "incompat feature " << f << " not present in " << fsmap.compat; |
7c673cae FG |
1495 | } |
1496 | r = 0; | |
1497 | } else if (prefix == "mds repaired") { | |
1498 | std::string role_str; | |
9f95a23c | 1499 | cmd_getval(cmdmap, "role", role_str); |
7c673cae | 1500 | mds_role_t role; |
1adf2230 | 1501 | r = fsmap.parse_role(role_str, &role, ss); |
7c673cae FG |
1502 | if (r < 0) { |
1503 | return r; | |
1504 | } | |
1505 | ||
1adf2230 | 1506 | bool modified = fsmap.undamaged(role.fscid, role.rank); |
7c673cae | 1507 | if (modified) { |
494da23a | 1508 | ss << "repaired: restoring rank " << role; |
7c673cae | 1509 | } else { |
494da23a | 1510 | ss << "nothing to do: rank is not damaged"; |
7c673cae FG |
1511 | } |
1512 | ||
1513 | r = 0; | |
11fdf7f2 TL |
1514 | } else if (prefix == "mds freeze") { |
1515 | std::string who; | |
9f95a23c | 1516 | cmd_getval(cmdmap, "role_or_gid", who); |
11fdf7f2 TL |
1517 | mds_gid_t gid = gid_from_arg(fsmap, who, ss); |
1518 | if (gid == MDS_GID_NONE) { | |
7c673cae FG |
1519 | return -EINVAL; |
1520 | } | |
1521 | ||
11fdf7f2 | 1522 | bool freeze = false; |
7c673cae | 1523 | { |
11fdf7f2 | 1524 | std::string str; |
9f95a23c | 1525 | cmd_getval(cmdmap, "val", str); |
11fdf7f2 TL |
1526 | if ((r = parse_bool(str, &freeze, ss)) != 0) { |
1527 | return r; | |
1528 | } | |
1529 | } | |
7c673cae | 1530 | |
11fdf7f2 TL |
1531 | auto f = [freeze,gid,&ss](auto& info) { |
1532 | if (freeze) { | |
1533 | ss << "freezing mds." << gid; | |
1534 | info.freeze(); | |
1535 | } else { | |
1536 | ss << "unfreezing mds." << gid; | |
1537 | info.unfreeze(); | |
1538 | } | |
1539 | }; | |
1540 | fsmap.modify_daemon(gid, f); | |
7c673cae FG |
1541 | r = 0; |
1542 | } else { | |
1543 | return -ENOSYS; | |
1544 | } | |
1545 | ||
1546 | return r; | |
1547 | } | |
1548 | ||
7c673cae FG |
1549 | void MDSMonitor::check_subs() |
1550 | { | |
7c673cae FG |
1551 | // Subscriptions may be to "mdsmap" (MDS and legacy clients), |
1552 | // "mdsmap.<namespace>", or to "fsmap" for the full state of all | |
1553 | // filesystems. Build a list of all the types we service | |
1554 | // subscriptions for. | |
9f95a23c TL |
1555 | |
1556 | std::vector<std::string> types = { | |
1557 | "fsmap", | |
1558 | "fsmap.user", | |
1559 | "mdsmap", | |
1560 | }; | |
1561 | ||
28e407b8 AA |
1562 | for (const auto &p : get_fsmap().filesystems) { |
1563 | const auto &fscid = p.first; | |
9f95a23c TL |
1564 | CachedStackStringStream cos; |
1565 | *cos << "mdsmap." << fscid; | |
1566 | types.push_back(std::string(cos->strv())); | |
7c673cae FG |
1567 | } |
1568 | ||
1569 | for (const auto &type : types) { | |
9f95a23c TL |
1570 | auto& subs = mon->session_map.subs; |
1571 | auto subs_it = subs.find(type); | |
1572 | if (subs_it == subs.end()) | |
7c673cae | 1573 | continue; |
9f95a23c TL |
1574 | auto sub_it = subs_it->second->begin(); |
1575 | while (!sub_it.end()) { | |
1576 | auto sub = *sub_it; | |
1577 | ++sub_it; // N.B. check_sub may remove sub! | |
7c673cae FG |
1578 | check_sub(sub); |
1579 | } | |
1580 | } | |
1581 | } | |
1582 | ||
1583 | ||
1584 | void MDSMonitor::check_sub(Subscription *sub) | |
1585 | { | |
1586 | dout(20) << __func__ << ": " << sub->type << dendl; | |
1587 | ||
28e407b8 AA |
1588 | const auto &fsmap = get_fsmap(); |
1589 | ||
7c673cae FG |
1590 | if (sub->type == "fsmap") { |
1591 | if (sub->next <= fsmap.get_epoch()) { | |
1592 | sub->session->con->send_message(new MFSMap(mon->monmap->fsid, fsmap)); | |
1593 | if (sub->onetime) { | |
1594 | mon->session_map.remove_sub(sub); | |
1595 | } else { | |
1596 | sub->next = fsmap.get_epoch() + 1; | |
1597 | } | |
1598 | } | |
1599 | } else if (sub->type == "fsmap.user") { | |
1600 | if (sub->next <= fsmap.get_epoch()) { | |
1601 | FSMapUser fsmap_u; | |
1602 | fsmap_u.epoch = fsmap.get_epoch(); | |
1603 | fsmap_u.legacy_client_fscid = fsmap.legacy_client_fscid; | |
28e407b8 AA |
1604 | for (const auto &p : fsmap.filesystems) { |
1605 | FSMapUser::fs_info_t& fs_info = fsmap_u.filesystems[p.second->fscid]; | |
1606 | fs_info.cid = p.second->fscid; | |
1607 | fs_info.name = p.second->mds_map.fs_name; | |
7c673cae FG |
1608 | } |
1609 | sub->session->con->send_message(new MFSMapUser(mon->monmap->fsid, fsmap_u)); | |
1610 | if (sub->onetime) { | |
1611 | mon->session_map.remove_sub(sub); | |
1612 | } else { | |
1613 | sub->next = fsmap.get_epoch() + 1; | |
1614 | } | |
1615 | } | |
1616 | } else if (sub->type.compare(0, 6, "mdsmap") == 0) { | |
1617 | if (sub->next > fsmap.get_epoch()) { | |
1618 | return; | |
1619 | } | |
1620 | ||
11fdf7f2 | 1621 | const bool is_mds = sub->session->name.is_mds(); |
7c673cae FG |
1622 | mds_gid_t mds_gid = MDS_GID_NONE; |
1623 | fs_cluster_id_t fscid = FS_CLUSTER_ID_NONE; | |
1624 | if (is_mds) { | |
1625 | // What (if any) namespace are you assigned to? | |
1626 | auto mds_info = fsmap.get_mds_info(); | |
1adf2230 | 1627 | for (const auto &p : mds_info) { |
11fdf7f2 | 1628 | if (p.second.addrs == sub->session->addrs) { |
1adf2230 | 1629 | mds_gid = p.first; |
7c673cae FG |
1630 | fscid = fsmap.mds_roles.at(mds_gid); |
1631 | } | |
1632 | } | |
1633 | } else { | |
1634 | // You're a client. Did you request a particular | |
1635 | // namespace? | |
11fdf7f2 | 1636 | if (sub->type.compare(0, 7, "mdsmap.") == 0) { |
7c673cae FG |
1637 | auto namespace_id_str = sub->type.substr(std::string("mdsmap.").size()); |
1638 | dout(10) << __func__ << ": namespace_id " << namespace_id_str << dendl; | |
1639 | std::string err; | |
1640 | fscid = strict_strtoll(namespace_id_str.c_str(), 10, &err); | |
1641 | if (!err.empty()) { | |
1642 | // Client asked for a non-existent namespace, send them nothing | |
1643 | dout(1) << "Invalid client subscription '" << sub->type | |
1644 | << "'" << dendl; | |
1645 | return; | |
1646 | } | |
1647 | if (fsmap.filesystems.count(fscid) == 0) { | |
1648 | // Client asked for a non-existent namespace, send them nothing | |
1649 | // TODO: something more graceful for when a client has a filesystem | |
1650 | // mounted, and the fileysstem is deleted. Add a "shut down you fool" | |
1651 | // flag to MMDSMap? | |
1652 | dout(1) << "Client subscribed to non-existent namespace '" << | |
1653 | fscid << "'" << dendl; | |
1654 | return; | |
1655 | } | |
1656 | } else { | |
1657 | // Unqualified request for "mdsmap": give it the one marked | |
1658 | // for use by legacy clients. | |
1659 | if (fsmap.legacy_client_fscid != FS_CLUSTER_ID_NONE) { | |
1660 | fscid = fsmap.legacy_client_fscid; | |
1661 | } else { | |
1662 | dout(1) << "Client subscribed for legacy filesystem but " | |
1663 | "none is configured" << dendl; | |
1664 | return; | |
1665 | } | |
1666 | } | |
1667 | } | |
1668 | dout(10) << __func__ << ": is_mds=" << is_mds << ", fscid= " << fscid << dendl; | |
1669 | ||
1670 | // Work out the effective latest epoch | |
28e407b8 | 1671 | const MDSMap *mds_map = nullptr; |
7c673cae FG |
1672 | MDSMap null_map; |
1673 | null_map.compat = fsmap.compat; | |
1674 | if (fscid == FS_CLUSTER_ID_NONE) { | |
1675 | // For a client, we should have already dropped out | |
11fdf7f2 | 1676 | ceph_assert(is_mds); |
7c673cae | 1677 | |
28e407b8 AA |
1678 | auto it = fsmap.standby_daemons.find(mds_gid); |
1679 | if (it != fsmap.standby_daemons.end()) { | |
7c673cae | 1680 | // For an MDS, we need to feed it an MDSMap with its own state in |
28e407b8 AA |
1681 | null_map.mds_info[mds_gid] = it->second; |
1682 | null_map.epoch = fsmap.standby_epochs.at(mds_gid); | |
7c673cae FG |
1683 | } else { |
1684 | null_map.epoch = fsmap.epoch; | |
1685 | } | |
1686 | mds_map = &null_map; | |
1687 | } else { | |
1688 | // Check the effective epoch | |
28e407b8 | 1689 | mds_map = &fsmap.get_filesystem(fscid)->mds_map; |
7c673cae FG |
1690 | } |
1691 | ||
11fdf7f2 | 1692 | ceph_assert(mds_map != nullptr); |
7c673cae FG |
1693 | dout(10) << __func__ << " selected MDS map epoch " << |
1694 | mds_map->epoch << " for namespace " << fscid << " for subscriber " | |
11fdf7f2 | 1695 | << sub->session->name << " who wants epoch " << sub->next << dendl; |
7c673cae FG |
1696 | |
1697 | if (sub->next > mds_map->epoch) { | |
1698 | return; | |
1699 | } | |
9f95a23c | 1700 | auto msg = make_message<MMDSMap>(mon->monmap->fsid, *mds_map); |
7c673cae | 1701 | |
11fdf7f2 | 1702 | sub->session->con->send_message(msg.detach()); |
7c673cae FG |
1703 | if (sub->onetime) { |
1704 | mon->session_map.remove_sub(sub); | |
1705 | } else { | |
1706 | sub->next = mds_map->get_epoch() + 1; | |
1707 | } | |
1708 | } | |
1709 | } | |
1710 | ||
1711 | ||
1712 | void MDSMonitor::update_metadata(mds_gid_t gid, | |
1713 | const map<string, string>& metadata) | |
1714 | { | |
1715 | if (metadata.empty()) { | |
1716 | return; | |
1717 | } | |
1718 | pending_metadata[gid] = metadata; | |
1719 | ||
1720 | MonitorDBStore::TransactionRef t = paxos->get_pending_transaction(); | |
1721 | bufferlist bl; | |
11fdf7f2 | 1722 | encode(pending_metadata, bl); |
7c673cae FG |
1723 | t->put(MDS_METADATA_PREFIX, "last_metadata", bl); |
1724 | paxos->trigger_propose(); | |
1725 | } | |
1726 | ||
1adf2230 | 1727 | void MDSMonitor::remove_from_metadata(const FSMap &fsmap, MonitorDBStore::TransactionRef t) |
7c673cae FG |
1728 | { |
1729 | bool update = false; | |
1adf2230 AA |
1730 | for (auto it = pending_metadata.begin(); it != pending_metadata.end(); ) { |
1731 | if (!fsmap.gid_exists(it->first)) { | |
1732 | it = pending_metadata.erase(it); | |
7c673cae FG |
1733 | update = true; |
1734 | } else { | |
1adf2230 | 1735 | ++it; |
7c673cae FG |
1736 | } |
1737 | } | |
1738 | if (!update) | |
1739 | return; | |
1740 | bufferlist bl; | |
11fdf7f2 | 1741 | encode(pending_metadata, bl); |
7c673cae FG |
1742 | t->put(MDS_METADATA_PREFIX, "last_metadata", bl); |
1743 | } | |
1744 | ||
1745 | int MDSMonitor::load_metadata(map<mds_gid_t, Metadata>& m) | |
1746 | { | |
1747 | bufferlist bl; | |
1748 | int r = mon->store->get(MDS_METADATA_PREFIX, "last_metadata", bl); | |
1749 | if (r) { | |
11fdf7f2 | 1750 | dout(5) << "Unable to load 'last_metadata'" << dendl; |
7c673cae FG |
1751 | return r; |
1752 | } | |
1753 | ||
11fdf7f2 TL |
1754 | auto it = bl.cbegin(); |
1755 | ceph::decode(m, it); | |
7c673cae FG |
1756 | return 0; |
1757 | } | |
1758 | ||
1adf2230 | 1759 | void MDSMonitor::count_metadata(const std::string &field, map<string,int> *out) |
31f18b77 | 1760 | { |
31f18b77 FG |
1761 | map<mds_gid_t,Metadata> meta; |
1762 | load_metadata(meta); | |
1763 | for (auto& p : meta) { | |
1764 | auto q = p.second.find(field); | |
1765 | if (q == p.second.end()) { | |
c07f9fc5 | 1766 | (*out)["unknown"]++; |
31f18b77 | 1767 | } else { |
c07f9fc5 | 1768 | (*out)[q->second]++; |
31f18b77 FG |
1769 | } |
1770 | } | |
c07f9fc5 FG |
1771 | } |
1772 | ||
1adf2230 | 1773 | void MDSMonitor::count_metadata(const std::string &field, Formatter *f) |
c07f9fc5 FG |
1774 | { |
1775 | map<string,int> by_val; | |
1776 | count_metadata(field, &by_val); | |
31f18b77 FG |
1777 | f->open_object_section(field.c_str()); |
1778 | for (auto& p : by_val) { | |
1779 | f->dump_int(p.first.c_str(), p.second); | |
1780 | } | |
1781 | f->close_section(); | |
1782 | } | |
1783 | ||
1adf2230 AA |
1784 | int MDSMonitor::dump_metadata(const FSMap& fsmap, const std::string &who, |
1785 | Formatter *f, ostream& err) | |
7c673cae | 1786 | { |
11fdf7f2 | 1787 | ceph_assert(f); |
7c673cae | 1788 | |
1adf2230 | 1789 | mds_gid_t gid = gid_from_arg(fsmap, who, err); |
7c673cae FG |
1790 | if (gid == MDS_GID_NONE) { |
1791 | return -EINVAL; | |
1792 | } | |
1793 | ||
1794 | map<mds_gid_t, Metadata> metadata; | |
1795 | if (int r = load_metadata(metadata)) { | |
1796 | err << "Unable to load 'last_metadata'"; | |
1797 | return r; | |
1798 | } | |
1799 | ||
1800 | if (!metadata.count(gid)) { | |
1801 | return -ENOENT; | |
1802 | } | |
1803 | const Metadata& m = metadata[gid]; | |
1804 | for (Metadata::const_iterator p = m.begin(); p != m.end(); ++p) { | |
1805 | f->dump_string(p->first.c_str(), p->second); | |
1806 | } | |
1807 | return 0; | |
1808 | } | |
1809 | ||
1810 | int MDSMonitor::print_nodes(Formatter *f) | |
1811 | { | |
11fdf7f2 | 1812 | ceph_assert(f); |
7c673cae | 1813 | |
1adf2230 AA |
1814 | const auto &fsmap = get_fsmap(); |
1815 | ||
7c673cae FG |
1816 | map<mds_gid_t, Metadata> metadata; |
1817 | if (int r = load_metadata(metadata)) { | |
1818 | return r; | |
1819 | } | |
1820 | ||
11fdf7f2 | 1821 | map<string, list<string> > mdses; // hostname => mds |
1adf2230 AA |
1822 | for (const auto &p : metadata) { |
1823 | const mds_gid_t& gid = p.first; | |
1824 | const Metadata& m = p.second; | |
7c673cae FG |
1825 | Metadata::const_iterator hostname = m.find("hostname"); |
1826 | if (hostname == m.end()) { | |
1827 | // not likely though | |
1828 | continue; | |
1829 | } | |
1adf2230 | 1830 | if (!fsmap.gid_exists(gid)) { |
7c673cae FG |
1831 | dout(5) << __func__ << ": GID " << gid << " not existent" << dendl; |
1832 | continue; | |
1833 | } | |
1adf2230 | 1834 | const MDSMap::mds_info_t& mds_info = fsmap.get_info_gid(gid); |
11fdf7f2 | 1835 | mdses[hostname->second].push_back(mds_info.name); |
7c673cae FG |
1836 | } |
1837 | ||
1838 | dump_services(f, mdses, "mds"); | |
1839 | return 0; | |
1840 | } | |
1841 | ||
1842 | /** | |
1843 | * If a cluster is undersized (with respect to max_mds), then | |
11fdf7f2 TL |
1844 | * attempt to find daemons to grow it. If the cluster is oversized |
1845 | * (with respect to max_mds) then shrink it by stopping its highest rank. | |
7c673cae | 1846 | */ |
11fdf7f2 | 1847 | bool MDSMonitor::maybe_resize_cluster(FSMap &fsmap, fs_cluster_id_t fscid) |
7c673cae | 1848 | { |
11fdf7f2 TL |
1849 | auto ¤t_mds_map = get_fsmap().get_filesystem(fscid)->mds_map; |
1850 | auto&& fs = fsmap.get_filesystem(fscid); | |
1adf2230 | 1851 | auto &mds_map = fs->mds_map; |
7c673cae | 1852 | |
1adf2230 AA |
1853 | int in = mds_map.get_num_in_mds(); |
1854 | int max = mds_map.get_max_mds(); | |
1855 | ||
1856 | dout(20) << __func__ << " in " << in << " max " << max << dendl; | |
1857 | ||
11fdf7f2 TL |
1858 | /* Check that both the current epoch mds_map is resizeable as well as the |
1859 | * current batch of changes in pending. This is important if an MDS is | |
1860 | * becoming active in the next epoch. | |
1861 | */ | |
1862 | if (!current_mds_map.is_resizeable() || | |
1863 | !mds_map.is_resizeable()) { | |
1864 | dout(5) << __func__ << " mds_map is not currently resizeable" << dendl; | |
1865 | return false; | |
1866 | } | |
1867 | ||
1868 | if (in < max && !mds_map.test_flag(CEPH_MDSMAP_NOT_JOINABLE)) { | |
7c673cae | 1869 | mds_rank_t mds = mds_rank_t(0); |
1adf2230 | 1870 | while (mds_map.is_in(mds)) { |
7c673cae FG |
1871 | mds++; |
1872 | } | |
9f95a23c TL |
1873 | auto info = fsmap.find_replacement_for({fscid, mds}); |
1874 | if (!info) { | |
1adf2230 | 1875 | return false; |
7c673cae FG |
1876 | } |
1877 | ||
9f95a23c | 1878 | dout(1) << "assigned standby " << info->addrs |
7c673cae | 1879 | << " as mds." << mds << dendl; |
9f95a23c | 1880 | mon->clog->info() << info->human_name() << " assigned to " |
1adf2230 AA |
1881 | "filesystem " << mds_map.fs_name << " as rank " |
1882 | << mds << " (now has " << mds_map.get_num_in_mds() + 1 | |
d2e6a577 | 1883 | << " ranks)"; |
9f95a23c | 1884 | fsmap.promote(info->global_id, *fs, mds); |
1adf2230 | 1885 | return true; |
11fdf7f2 TL |
1886 | } else if (in > max) { |
1887 | mds_rank_t target = in - 1; | |
1888 | const auto &info = mds_map.get_info(target); | |
1889 | if (mds_map.is_active(target)) { | |
1890 | dout(1) << "stopping " << target << dendl; | |
1891 | mon->clog->info() << "stopping " << info.human_name(); | |
1892 | auto f = [](auto& info) { | |
1893 | info.state = MDSMap::STATE_STOPPING; | |
1894 | }; | |
1895 | fsmap.modify_daemon(info.global_id, f); | |
1896 | return true; | |
1897 | } else { | |
1898 | dout(20) << "skipping stop of " << target << dendl; | |
1899 | return false; | |
1900 | } | |
7c673cae FG |
1901 | } |
1902 | ||
1adf2230 | 1903 | return false; |
7c673cae FG |
1904 | } |
1905 | ||
1906 | ||
1907 | /** | |
9f95a23c | 1908 | * Fail a daemon and replace it with a suitable standby. |
7c673cae | 1909 | */ |
9f95a23c | 1910 | bool MDSMonitor::drop_mds(FSMap &fsmap, mds_gid_t gid, const mds_info_t* rep_info, bool *osd_propose) |
7c673cae | 1911 | { |
11fdf7f2 | 1912 | ceph_assert(osd_propose != nullptr); |
7c673cae | 1913 | |
1adf2230 | 1914 | const auto fscid = fsmap.mds_roles.at(gid); |
9f95a23c TL |
1915 | const auto& info = fsmap.get_info_gid(gid); |
1916 | const auto rank = info.rank; | |
1917 | const auto state = info.state; | |
1918 | ||
1919 | if (info.is_frozen()) { | |
1920 | return false; | |
1921 | } else if (state == MDSMap::STATE_STANDBY_REPLAY || | |
1922 | state == MDSMap::STATE_STANDBY) { | |
1923 | dout(1) << " failing and removing standby " << gid << " " << info.addrs | |
1924 | << " mds." << rank | |
1925 | << "." << info.inc << " " << ceph_mds_state_name(state) | |
1926 | << dendl; | |
1927 | *osd_propose |= fail_mds_gid(fsmap, gid); | |
1928 | return true; | |
1929 | } else if (rank >= 0 && rep_info) { | |
1930 | auto fs = fsmap.filesystems.at(fscid); | |
1931 | if (fs->mds_map.test_flag(CEPH_MDSMAP_NOT_JOINABLE)) { | |
1932 | return false; | |
1933 | } | |
1934 | // are we in? | |
1935 | // and is there a non-laggy standby that can take over for us? | |
1936 | dout(1) << " replacing " << gid << " " << info.addrs | |
1937 | << " mds." << rank << "." << info.inc | |
1938 | << " " << ceph_mds_state_name(state) | |
1939 | << " with " << rep_info->global_id << "/" << rep_info->name << " " << rep_info->addrs | |
1940 | << dendl; | |
1941 | ||
1942 | mon->clog->warn() << "Replacing " << info.human_name() | |
1943 | << " as rank " << rank | |
1944 | << " with standby " << rep_info->human_name(); | |
1945 | ||
1946 | // Remove the old one | |
1947 | *osd_propose |= fail_mds_gid(fsmap, gid); | |
1948 | ||
1949 | // Promote the replacement | |
1950 | fsmap.promote(rep_info->global_id, *fs, rank); | |
1951 | ||
1952 | return true; | |
1953 | } | |
1954 | return false; | |
1955 | } | |
1956 | ||
1957 | bool MDSMonitor::check_health(FSMap& fsmap, bool* propose_osdmap) | |
1958 | { | |
1959 | bool do_propose = false; | |
1960 | const auto now = mono_clock::now(); | |
1961 | const bool osdmap_writeable = mon->osdmon()->is_writeable(); | |
1962 | const auto mds_beacon_grace = g_conf().get_val<double>("mds_beacon_grace"); | |
1963 | const auto mds_beacon_interval = g_conf().get_val<double>("mds_beacon_interval"); | |
1964 | ||
1965 | if (mono_clock::is_zero(last_tick)) { | |
1966 | last_tick = now; | |
1967 | } | |
1968 | ||
1969 | { | |
1970 | auto since_last = std::chrono::duration<double>(now-last_tick); | |
1971 | ||
1972 | if (since_last.count() > (mds_beacon_grace-mds_beacon_interval)) { | |
1973 | // This case handles either local slowness (calls being delayed | |
1974 | // for whatever reason) or cluster election slowness (a long gap | |
1975 | // between calls while an election happened) | |
1976 | dout(1) << __func__ << ": resetting beacon timeouts due to mon delay " | |
1977 | "(slow election?) of " << since_last.count() << " seconds" << dendl; | |
1978 | for (auto& p : last_beacon) { | |
1979 | p.second.stamp = now; | |
1980 | } | |
1981 | } | |
1982 | } | |
1983 | ||
1984 | // make sure last_beacon is fully populated | |
1985 | for (auto& p : fsmap.mds_roles) { | |
1986 | auto& gid = p.first; | |
1987 | last_beacon.emplace(std::piecewise_construct, | |
1988 | std::forward_as_tuple(gid), | |
1989 | std::forward_as_tuple(now, 0)); | |
1990 | } | |
7c673cae | 1991 | |
31f18b77 | 1992 | // We will only take decisive action (replacing/removing a daemon) |
9f95a23c | 1993 | // if we have some indication that some other daemon(s) are successfully |
31f18b77 | 1994 | // getting beacons through recently. |
1adf2230 | 1995 | mono_time latest_beacon = mono_clock::zero(); |
9f95a23c | 1996 | for (const auto& p : last_beacon) { |
1adf2230 | 1997 | latest_beacon = std::max(p.second.stamp, latest_beacon); |
31f18b77 | 1998 | } |
9f95a23c | 1999 | auto since = chrono::duration<double>(now-latest_beacon); |
1adf2230 | 2000 | const bool may_replace = since.count() < |
11fdf7f2 | 2001 | std::max(g_conf()->mds_beacon_interval, g_conf()->mds_beacon_grace * 0.5); |
31f18b77 | 2002 | |
9f95a23c TL |
2003 | // check beacon timestamps |
2004 | std::vector<mds_gid_t> to_remove; | |
2005 | for (auto it = last_beacon.begin(); it != last_beacon.end(); ) { | |
2006 | auto& [gid, beacon_info] = *it; | |
2007 | auto since_last = chrono::duration<double>(now-beacon_info.stamp); | |
2008 | ||
2009 | if (!fsmap.gid_exists(gid)) { | |
2010 | // gid no longer exists, remove from tracked beacons | |
2011 | it = last_beacon.erase(it); | |
2012 | continue; | |
2013 | } | |
7c673cae | 2014 | |
9f95a23c TL |
2015 | if (since_last.count() >= g_conf()->mds_beacon_grace) { |
2016 | auto& info = fsmap.get_info_gid(gid); | |
2017 | dout(1) << "no beacon from mds." << info.rank << "." << info.inc | |
2018 | << " (gid: " << gid << " addr: " << info.addrs | |
2019 | << " state: " << ceph_mds_state_name(info.state) << ")" | |
2020 | << " since " << since_last.count() << dendl; | |
2021 | // If the OSDMap is writeable, we can blacklist things, so we can | |
2022 | // try failing any laggy MDS daemons. Consider each one for failure. | |
2023 | if (!info.laggy()) { | |
2024 | dout(1) << " marking " << gid << " " << info.addrs | |
2025 | << " mds." << info.rank << "." << info.inc | |
2026 | << " " << ceph_mds_state_name(info.state) | |
2027 | << " laggy" << dendl; | |
2028 | fsmap.modify_daemon(info.global_id, [](auto& info) { | |
2029 | info.laggy_since = ceph_clock_now(); | |
2030 | }); | |
2031 | do_propose = true; | |
2032 | } | |
2033 | if (osdmap_writeable && may_replace) { | |
2034 | to_remove.push_back(gid); // drop_mds may invalidate iterator | |
2035 | } | |
2036 | } | |
31f18b77 | 2037 | |
9f95a23c TL |
2038 | ++it; |
2039 | } | |
7c673cae | 2040 | |
9f95a23c TL |
2041 | for (const auto& gid : to_remove) { |
2042 | auto& info = fsmap.get_info_gid(gid); | |
2043 | const mds_info_t* rep_info = nullptr; | |
2044 | if (info.rank >= 0) { | |
2045 | auto fscid = fsmap.gid_fscid(gid); | |
2046 | rep_info = fsmap.find_replacement_for({fscid, info.rank}); | |
2047 | } | |
2048 | bool dropped = drop_mds(fsmap, gid, rep_info, propose_osdmap); | |
2049 | if (dropped) { | |
2050 | mon->clog->info() << "MDS " << info.human_name() | |
2051 | << " is removed because it is dead or otherwise unavailable."; | |
2052 | do_propose = true; | |
2053 | } | |
2054 | } | |
7c673cae | 2055 | |
9f95a23c TL |
2056 | if (osdmap_writeable) { |
2057 | for (auto& [fscid, fs] : fsmap.filesystems) { | |
2058 | if (!fs->mds_map.test_flag(CEPH_MDSMAP_NOT_JOINABLE) && | |
2059 | fs->mds_map.is_resizeable()) { | |
2060 | // Check if a rank or standby-replay should be replaced with a stronger | |
2061 | // affinity standby. This looks at ranks and standby-replay: | |
2062 | for (const auto& [gid, info] : fs->mds_map.get_mds_info()) { | |
2063 | const auto join_fscid = info.join_fscid; | |
2064 | if (join_fscid == fscid) | |
2065 | continue; | |
2066 | const auto rank = info.rank; | |
2067 | const auto state = info.state; | |
2068 | const mds_info_t* rep_info = nullptr; | |
2069 | if (state == MDSMap::STATE_STANDBY_REPLAY) { | |
2070 | rep_info = fsmap.get_available_standby(fscid); | |
2071 | } else if (state == MDSMap::STATE_ACTIVE) { | |
2072 | rep_info = fsmap.find_replacement_for({fscid, rank}); | |
2073 | } else { | |
2074 | /* N.B. !is_degraded() */ | |
2075 | ceph_abort_msg("invalid state in MDSMap"); | |
2076 | } | |
2077 | if (!rep_info) { | |
2078 | break; | |
2079 | } | |
2080 | bool better_affinity = false; | |
2081 | if (join_fscid == FS_CLUSTER_ID_NONE) { | |
2082 | better_affinity = (rep_info->join_fscid == fscid); | |
2083 | } else { | |
2084 | better_affinity = (rep_info->join_fscid == fscid) || | |
2085 | (rep_info->join_fscid == FS_CLUSTER_ID_NONE); | |
2086 | } | |
2087 | if (better_affinity) { | |
2088 | if (state == MDSMap::STATE_STANDBY_REPLAY) { | |
2089 | mon->clog->info() << "Dropping low affinity standby-replay " | |
2090 | << info.human_name() | |
2091 | << " in favor of higher affinity standby."; | |
2092 | *propose_osdmap |= fail_mds_gid(fsmap, gid); | |
2093 | /* Now let maybe_promote_standby do the promotion. */ | |
2094 | } else { | |
2095 | mon->clog->info() << "Dropping low affinity active " | |
2096 | << info.human_name() | |
2097 | << " in favor of higher affinity standby."; | |
2098 | do_propose |= drop_mds(fsmap, gid, rep_info, propose_osdmap); | |
2099 | } | |
2100 | break; /* don't replace more than one per tick per fs */ | |
2101 | } | |
2102 | } | |
2103 | } | |
2104 | } | |
7c673cae | 2105 | } |
9f95a23c | 2106 | return do_propose; |
7c673cae FG |
2107 | } |
2108 | ||
11fdf7f2 | 2109 | bool MDSMonitor::maybe_promote_standby(FSMap &fsmap, Filesystem& fs) |
7c673cae | 2110 | { |
11fdf7f2 TL |
2111 | if (fs.mds_map.test_flag(CEPH_MDSMAP_NOT_JOINABLE)) { |
2112 | return false; | |
2113 | } | |
7c673cae FG |
2114 | |
2115 | bool do_propose = false; | |
2116 | ||
2117 | // have a standby take over? | |
2118 | set<mds_rank_t> failed; | |
11fdf7f2 TL |
2119 | fs.mds_map.get_failed_mds_set(failed); |
2120 | for (const auto& rank : failed) { | |
9f95a23c TL |
2121 | auto info = fsmap.find_replacement_for({fs.fscid, rank}); |
2122 | if (info) { | |
2123 | dout(1) << " taking over failed mds." << rank << " with " << info->global_id | |
2124 | << "/" << info->name << " " << info->addrs << dendl; | |
2125 | mon->clog->info() << "Standby " << info->human_name() | |
11fdf7f2 TL |
2126 | << " assigned to filesystem " << fs.mds_map.fs_name |
2127 | << " as rank " << rank; | |
2128 | ||
9f95a23c | 2129 | fsmap.promote(info->global_id, fs, rank); |
11fdf7f2 | 2130 | do_propose = true; |
7c673cae | 2131 | } |
11fdf7f2 TL |
2132 | } |
2133 | ||
9f95a23c | 2134 | if (!fs.mds_map.is_degraded() && fs.mds_map.allows_standby_replay()) { |
7c673cae | 2135 | // There were no failures to replace, so try using any available standbys |
a8e16298 TL |
2136 | // as standby-replay daemons. Don't do this when the cluster is degraded |
2137 | // as a standby-replay daemon may try to read a journal being migrated. | |
11fdf7f2 | 2138 | for (;;) { |
9f95a23c TL |
2139 | auto info = fsmap.get_available_standby(fs.fscid); |
2140 | if (!info) break; | |
2141 | dout(20) << "standby available mds." << info->global_id << dendl; | |
11fdf7f2 TL |
2142 | bool changed = false; |
2143 | for (const auto& rank : fs.mds_map.in) { | |
9f95a23c | 2144 | dout(20) << "examining " << rank << dendl; |
11fdf7f2 | 2145 | if (fs.mds_map.is_followable(rank)) { |
9f95a23c | 2146 | dout(1) << " setting mds." << info->global_id |
11fdf7f2 | 2147 | << " to follow mds rank " << rank << dendl; |
9f95a23c | 2148 | fsmap.assign_standby_replay(info->global_id, fs.fscid, rank); |
11fdf7f2 TL |
2149 | do_propose = true; |
2150 | changed = true; | |
2151 | break; | |
7c673cae | 2152 | } |
7c673cae | 2153 | } |
11fdf7f2 | 2154 | if (!changed) break; |
7c673cae FG |
2155 | } |
2156 | } | |
2157 | ||
2158 | return do_propose; | |
2159 | } | |
2160 | ||
2161 | void MDSMonitor::tick() | |
2162 | { | |
1adf2230 | 2163 | if (!is_active() || !is_leader()) return; |
28e407b8 AA |
2164 | |
2165 | auto &pending = get_pending_fsmap_writeable(); | |
7c673cae | 2166 | |
28e407b8 | 2167 | bool do_propose = false; |
9f95a23c | 2168 | bool propose_osdmap = false; |
7c673cae | 2169 | |
28e407b8 | 2170 | do_propose |= pending.check_health(); |
7c673cae | 2171 | |
9f95a23c TL |
2172 | /* Check health and affinity of ranks */ |
2173 | do_propose |= check_health(pending, &propose_osdmap); | |
7c673cae | 2174 | |
9f95a23c TL |
2175 | /* Resize the cluster according to max_mds. */ |
2176 | for (auto& p : pending.filesystems) { | |
2177 | do_propose |= maybe_resize_cluster(pending, p.second->fscid); | |
7c673cae FG |
2178 | } |
2179 | ||
9f95a23c TL |
2180 | /* Replace any failed ranks. */ |
2181 | for (auto& p : pending.filesystems) { | |
2182 | do_propose |= maybe_promote_standby(pending, *p.second); | |
7c673cae FG |
2183 | } |
2184 | ||
c07f9fc5 FG |
2185 | if (propose_osdmap) { |
2186 | request_proposal(mon->osdmon()); | |
2187 | } | |
7c673cae | 2188 | |
7c673cae FG |
2189 | if (do_propose) { |
2190 | propose_pending(); | |
2191 | } | |
9f95a23c TL |
2192 | |
2193 | last_tick = mono_clock::now(); | |
7c673cae FG |
2194 | } |
2195 | ||
7c673cae FG |
2196 | MDSMonitor::MDSMonitor(Monitor *mn, Paxos *p, string service_name) |
2197 | : PaxosService(mn, p, service_name) | |
2198 | { | |
c07f9fc5 | 2199 | handlers = FileSystemCommandHandler::load(p); |
7c673cae FG |
2200 | } |
2201 | ||
2202 | void MDSMonitor::on_restart() | |
2203 | { | |
2204 | // Clear out the leader-specific state. | |
1adf2230 | 2205 | last_tick = mono_clock::now(); |
7c673cae FG |
2206 | last_beacon.clear(); |
2207 | } | |
2208 |