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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 | ||
f67539c2 TL |
42 | using namespace TOPNSPC::common; |
43 | ||
44 | using std::dec; | |
45 | using std::hex; | |
46 | using std::list; | |
47 | using std::map; | |
48 | using std::make_pair; | |
49 | using std::ostream; | |
50 | using std::ostringstream; | |
51 | using std::pair; | |
52 | using std::set; | |
53 | using std::string; | |
54 | using std::string_view; | |
55 | using std::stringstream; | |
56 | using std::to_string; | |
57 | using std::vector; | |
58 | ||
59 | using ceph::bufferlist; | |
60 | using ceph::decode; | |
61 | using ceph::encode; | |
62 | using ceph::ErasureCodeInterfaceRef; | |
63 | using ceph::ErasureCodeProfile; | |
64 | using ceph::Formatter; | |
65 | using ceph::JSONFormatter; | |
66 | using ceph::make_message; | |
67 | using ceph::mono_clock; | |
68 | using ceph::mono_time; | |
69 | ||
7c673cae FG |
70 | #define dout_subsys ceph_subsys_mon |
71 | #undef dout_prefix | |
28e407b8 | 72 | #define dout_prefix _prefix(_dout, mon, get_fsmap()) |
f67539c2 TL |
73 | static ostream& _prefix(std::ostream *_dout, Monitor &mon, const FSMap& fsmap) { |
74 | return *_dout << "mon." << mon.name << "@" << mon.rank | |
75 | << "(" << mon.get_state_name() | |
7c673cae FG |
76 | << ").mds e" << fsmap.get_epoch() << " "; |
77 | } | |
78 | ||
3efd9988 FG |
79 | static const string MDS_METADATA_PREFIX("mds_metadata"); |
80 | static const string MDS_HEALTH_PREFIX("mds_health"); | |
81 | ||
82 | ||
7c673cae FG |
83 | /* |
84 | * Specialized implementation of cmd_getval to allow us to parse | |
85 | * out strongly-typedef'd types | |
86 | */ | |
9f95a23c TL |
87 | namespace TOPNSPC::common { |
88 | template<> bool cmd_getval(const cmdmap_t& cmdmap, | |
31f18b77 | 89 | const std::string& k, mds_gid_t &val) |
7c673cae | 90 | { |
9f95a23c | 91 | return cmd_getval(cmdmap, k, (int64_t&)val); |
7c673cae FG |
92 | } |
93 | ||
9f95a23c | 94 | template<> bool cmd_getval(const cmdmap_t& cmdmap, |
31f18b77 | 95 | const std::string& k, mds_rank_t &val) |
7c673cae | 96 | { |
9f95a23c | 97 | return cmd_getval(cmdmap, k, (int64_t&)val); |
7c673cae FG |
98 | } |
99 | ||
9f95a23c | 100 | template<> bool cmd_getval(const cmdmap_t& cmdmap, |
31f18b77 | 101 | const std::string& k, MDSMap::DaemonState &val) |
7c673cae | 102 | { |
9f95a23c TL |
103 | return cmd_getval(cmdmap, k, (int64_t&)val); |
104 | } | |
7c673cae | 105 | } |
7c673cae FG |
106 | // my methods |
107 | ||
11fdf7f2 TL |
108 | template <int dblV> |
109 | void MDSMonitor::print_map(const FSMap& m) | |
7c673cae | 110 | { |
11fdf7f2 | 111 | dout(dblV) << "print_map\n"; |
7c673cae FG |
112 | m.print(*_dout); |
113 | *_dout << dendl; | |
114 | } | |
115 | ||
116 | // service methods | |
117 | void MDSMonitor::create_initial() | |
118 | { | |
119 | dout(10) << "create_initial" << dendl; | |
120 | } | |
121 | ||
11fdf7f2 | 122 | void MDSMonitor::get_store_prefixes(std::set<string>& s) const |
3efd9988 FG |
123 | { |
124 | s.insert(service_name); | |
125 | s.insert(MDS_METADATA_PREFIX); | |
126 | s.insert(MDS_HEALTH_PREFIX); | |
127 | } | |
7c673cae FG |
128 | |
129 | void MDSMonitor::update_from_paxos(bool *need_bootstrap) | |
130 | { | |
131 | version_t version = get_last_committed(); | |
28e407b8 | 132 | if (version == get_fsmap().epoch) |
7c673cae FG |
133 | return; |
134 | ||
135 | dout(10) << __func__ << " version " << version | |
28e407b8 | 136 | << ", my e " << get_fsmap().epoch << dendl; |
11fdf7f2 | 137 | ceph_assert(version > get_fsmap().epoch); |
7c673cae | 138 | |
224ce89b WB |
139 | load_health(); |
140 | ||
7c673cae FG |
141 | // read and decode |
142 | bufferlist fsmap_bl; | |
143 | fsmap_bl.clear(); | |
144 | int err = get_version(version, fsmap_bl); | |
11fdf7f2 | 145 | ceph_assert(err == 0); |
7c673cae | 146 | |
11fdf7f2 | 147 | ceph_assert(fsmap_bl.length() > 0); |
7c673cae | 148 | dout(10) << __func__ << " got " << version << dendl; |
522d829b TL |
149 | try { |
150 | PaxosFSMap::decode(fsmap_bl); | |
151 | } catch (const ceph::buffer::malformed_input& e) { | |
152 | derr << "unable to decode FSMap: " << e.what() << dendl; | |
153 | throw; | |
154 | } | |
7c673cae FG |
155 | |
156 | // new map | |
91327a77 | 157 | dout(0) << "new map" << dendl; |
11fdf7f2 TL |
158 | print_map<0>(get_fsmap()); |
159 | if (!g_conf()->mon_mds_skip_sanity) { | |
28e407b8 | 160 | get_fsmap().sanity(); |
7c673cae FG |
161 | } |
162 | ||
163 | check_subs(); | |
7c673cae FG |
164 | } |
165 | ||
166 | void MDSMonitor::init() | |
167 | { | |
168 | (void)load_metadata(pending_metadata); | |
169 | } | |
170 | ||
171 | void MDSMonitor::create_pending() | |
172 | { | |
28e407b8 | 173 | auto &fsmap = PaxosFSMap::create_pending(); |
7c673cae | 174 | |
f67539c2 TL |
175 | if (mon.osdmon()->is_readable()) { |
176 | const auto &osdmap = mon.osdmon()->osdmap; | |
28e407b8 | 177 | fsmap.sanitize([&osdmap](int64_t pool){return osdmap.have_pg_pool(pool);}); |
3efd9988 FG |
178 | } |
179 | ||
28e407b8 | 180 | dout(10) << "create_pending e" << fsmap.epoch << dendl; |
7c673cae FG |
181 | } |
182 | ||
183 | void MDSMonitor::encode_pending(MonitorDBStore::TransactionRef t) | |
184 | { | |
28e407b8 AA |
185 | auto &pending = get_pending_fsmap_writeable(); |
186 | auto &epoch = pending.epoch; | |
7c673cae | 187 | |
28e407b8 | 188 | dout(10) << "encode_pending e" << epoch << dendl; |
7c673cae FG |
189 | |
190 | // print map iff 'debug mon = 30' or higher | |
11fdf7f2 TL |
191 | print_map<30>(pending); |
192 | if (!g_conf()->mon_mds_skip_sanity) { | |
28e407b8 | 193 | pending.sanity(); |
7c673cae FG |
194 | } |
195 | ||
196 | // Set 'modified' on maps modified this epoch | |
28e407b8 AA |
197 | for (auto &p : pending.filesystems) { |
198 | if (p.second->mds_map.epoch == epoch) { | |
199 | p.second->mds_map.modified = ceph_clock_now(); | |
7c673cae FG |
200 | } |
201 | } | |
202 | ||
203 | // apply to paxos | |
11fdf7f2 | 204 | ceph_assert(get_last_committed() + 1 == pending.epoch); |
28e407b8 | 205 | bufferlist pending_bl; |
f67539c2 | 206 | pending.encode(pending_bl, mon.get_quorum_con_features()); |
7c673cae FG |
207 | |
208 | /* put everything in the transaction */ | |
28e407b8 AA |
209 | put_version(t, pending.epoch, pending_bl); |
210 | put_last_committed(t, pending.epoch); | |
7c673cae FG |
211 | |
212 | // Encode MDSHealth data | |
213 | for (std::map<uint64_t, MDSHealth>::iterator i = pending_daemon_health.begin(); | |
214 | i != pending_daemon_health.end(); ++i) { | |
215 | bufferlist bl; | |
216 | i->second.encode(bl); | |
217 | t->put(MDS_HEALTH_PREFIX, stringify(i->first), bl); | |
218 | } | |
219 | ||
220 | for (std::set<uint64_t>::iterator i = pending_daemon_health_rm.begin(); | |
221 | i != pending_daemon_health_rm.end(); ++i) { | |
222 | t->erase(MDS_HEALTH_PREFIX, stringify(*i)); | |
223 | } | |
224 | pending_daemon_health_rm.clear(); | |
1adf2230 | 225 | remove_from_metadata(pending, t); |
224ce89b WB |
226 | |
227 | // health | |
228 | health_check_map_t new_checks; | |
28e407b8 | 229 | const auto &info_map = pending.get_mds_info(); |
224ce89b WB |
230 | for (const auto &i : info_map) { |
231 | const auto &gid = i.first; | |
232 | const auto &info = i.second; | |
233 | if (pending_daemon_health_rm.count(gid)) { | |
234 | continue; | |
235 | } | |
236 | MDSHealth health; | |
237 | auto p = pending_daemon_health.find(gid); | |
238 | if (p != pending_daemon_health.end()) { | |
239 | health = p->second; | |
240 | } else { | |
241 | bufferlist bl; | |
f67539c2 | 242 | mon.store->get(MDS_HEALTH_PREFIX, stringify(gid), bl); |
224ce89b WB |
243 | if (!bl.length()) { |
244 | derr << "Missing health data for MDS " << gid << dendl; | |
245 | continue; | |
246 | } | |
11fdf7f2 | 247 | auto bl_i = bl.cbegin(); |
224ce89b WB |
248 | health.decode(bl_i); |
249 | } | |
250 | for (const auto &metric : health.metrics) { | |
9f95a23c | 251 | const auto rank = info.rank; |
224ce89b WB |
252 | health_check_t *check = &new_checks.get_or_add( |
253 | mds_metric_name(metric.type), | |
254 | metric.sev, | |
9f95a23c TL |
255 | mds_metric_summary(metric.type), |
256 | 1); | |
224ce89b | 257 | ostringstream ss; |
f91f0fd5 | 258 | ss << "mds." << info.name << "(mds." << rank << "): " << metric.message; |
28e407b8 AA |
259 | bool first = true; |
260 | for (auto &p : metric.metadata) { | |
261 | if (first) { | |
262 | ss << " "; | |
263 | } else { | |
224ce89b | 264 | ss << ", "; |
28e407b8 AA |
265 | } |
266 | ss << p.first << ": " << p.second; | |
267 | first = false; | |
224ce89b WB |
268 | } |
269 | check->detail.push_back(ss.str()); | |
270 | } | |
271 | } | |
28e407b8 | 272 | pending.get_health_checks(&new_checks); |
224ce89b | 273 | for (auto& p : new_checks.checks) { |
11fdf7f2 | 274 | p.second.summary = std::regex_replace( |
224ce89b | 275 | p.second.summary, |
11fdf7f2 | 276 | std::regex("%num%"), |
224ce89b | 277 | stringify(p.second.detail.size())); |
11fdf7f2 | 278 | p.second.summary = std::regex_replace( |
224ce89b | 279 | p.second.summary, |
11fdf7f2 | 280 | std::regex("%plurals%"), |
224ce89b | 281 | p.second.detail.size() > 1 ? "s" : ""); |
11fdf7f2 | 282 | p.second.summary = std::regex_replace( |
224ce89b | 283 | p.second.summary, |
11fdf7f2 | 284 | std::regex("%isorare%"), |
224ce89b | 285 | p.second.detail.size() > 1 ? "are" : "is"); |
11fdf7f2 | 286 | p.second.summary = std::regex_replace( |
181888fb | 287 | p.second.summary, |
11fdf7f2 | 288 | std::regex("%hasorhave%"), |
181888fb | 289 | p.second.detail.size() > 1 ? "have" : "has"); |
224ce89b WB |
290 | } |
291 | encode_health(new_checks, t); | |
7c673cae FG |
292 | } |
293 | ||
11fdf7f2 | 294 | version_t MDSMonitor::get_trim_to() const |
7c673cae FG |
295 | { |
296 | version_t floor = 0; | |
11fdf7f2 | 297 | if (g_conf()->mon_mds_force_trim_to > 0 && |
522d829b | 298 | g_conf()->mon_mds_force_trim_to <= (int)get_last_committed()) { |
11fdf7f2 | 299 | floor = g_conf()->mon_mds_force_trim_to; |
7c673cae FG |
300 | dout(10) << __func__ << " explicit mon_mds_force_trim_to = " |
301 | << floor << dendl; | |
302 | } | |
303 | ||
11fdf7f2 | 304 | unsigned max = g_conf()->mon_max_mdsmap_epochs; |
7c673cae FG |
305 | version_t last = get_last_committed(); |
306 | ||
522d829b TL |
307 | if (last - get_first_committed() > max && floor < last - max) { |
308 | floor = last-max; | |
309 | } | |
310 | ||
311 | dout(20) << __func__ << " = " << floor << dendl; | |
7c673cae FG |
312 | return floor; |
313 | } | |
314 | ||
7c673cae FG |
315 | bool MDSMonitor::preprocess_query(MonOpRequestRef op) |
316 | { | |
317 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 318 | auto m = op->get_req<PaxosServiceMessage>(); |
11fdf7f2 TL |
319 | dout(10) << "preprocess_query " << *m << " from " << m->get_orig_source() |
320 | << " " << m->get_orig_source_addrs() << dendl; | |
7c673cae FG |
321 | |
322 | switch (m->get_type()) { | |
323 | ||
324 | case MSG_MDS_BEACON: | |
325 | return preprocess_beacon(op); | |
326 | ||
327 | case MSG_MON_COMMAND: | |
f64942e4 AA |
328 | try { |
329 | return preprocess_command(op); | |
11fdf7f2 | 330 | } catch (const bad_cmd_get& e) { |
f64942e4 | 331 | bufferlist bl; |
f67539c2 | 332 | mon.reply_command(op, -EINVAL, e.what(), bl, get_last_committed()); |
f64942e4 AA |
333 | return true; |
334 | } | |
7c673cae FG |
335 | |
336 | case MSG_MDS_OFFLOAD_TARGETS: | |
337 | return preprocess_offload_targets(op); | |
338 | ||
339 | default: | |
340 | ceph_abort(); | |
341 | return true; | |
342 | } | |
343 | } | |
344 | ||
345 | void MDSMonitor::_note_beacon(MMDSBeacon *m) | |
346 | { | |
347 | mds_gid_t gid = mds_gid_t(m->get_global_id()); | |
348 | version_t seq = m->get_seq(); | |
349 | ||
91327a77 | 350 | dout(5) << "_note_beacon " << *m << " noting time" << dendl; |
1adf2230 AA |
351 | auto &beacon = last_beacon[gid]; |
352 | beacon.stamp = mono_clock::now(); | |
353 | beacon.seq = seq; | |
7c673cae FG |
354 | } |
355 | ||
356 | bool MDSMonitor::preprocess_beacon(MonOpRequestRef op) | |
357 | { | |
358 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 359 | auto m = op->get_req<MMDSBeacon>(); |
7c673cae FG |
360 | MDSMap::DaemonState state = m->get_state(); |
361 | mds_gid_t gid = m->get_global_id(); | |
362 | version_t seq = m->get_seq(); | |
363 | MDSMap::mds_info_t info; | |
364 | epoch_t effective_epoch = 0; | |
365 | ||
1adf2230 | 366 | const auto &fsmap = get_fsmap(); |
28e407b8 | 367 | |
7c673cae | 368 | // check privileges, ignore if fails |
11fdf7f2 TL |
369 | MonSession *session = op->get_session(); |
370 | if (!session) | |
371 | goto ignore; | |
7c673cae FG |
372 | if (!session->is_capable("mds", MON_CAP_X)) { |
373 | dout(0) << "preprocess_beacon got MMDSBeacon from entity with insufficient privileges " | |
374 | << session->caps << dendl; | |
375 | goto ignore; | |
376 | } | |
377 | ||
f67539c2 TL |
378 | if (m->get_fsid() != mon.monmap->fsid) { |
379 | dout(0) << "preprocess_beacon on fsid " << m->get_fsid() << " != " << mon.monmap->fsid << dendl; | |
7c673cae FG |
380 | goto ignore; |
381 | } | |
382 | ||
91327a77 | 383 | dout(5) << "preprocess_beacon " << *m |
11fdf7f2 TL |
384 | << " from " << m->get_orig_source() |
385 | << " " << m->get_orig_source_addrs() | |
7c673cae FG |
386 | << " " << m->get_compat() |
387 | << dendl; | |
388 | ||
389 | // make sure the address has a port | |
390 | if (m->get_orig_source_addr().get_port() == 0) { | |
391 | dout(1) << " ignoring boot message without a port" << dendl; | |
392 | goto ignore; | |
393 | } | |
394 | ||
7c673cae | 395 | // fw to leader? |
28e407b8 | 396 | if (!is_leader()) |
7c673cae FG |
397 | return false; |
398 | ||
399 | // booted, but not in map? | |
28e407b8 | 400 | if (!fsmap.gid_exists(gid)) { |
7c673cae FG |
401 | if (state != MDSMap::STATE_BOOT) { |
402 | dout(7) << "mds_beacon " << *m << " is not in fsmap (state " | |
403 | << ceph_mds_state_name(state) << ")" << dendl; | |
404 | ||
1adf2230 AA |
405 | /* We can't send an MDSMap this MDS was a part of because we no longer |
406 | * know which FS it was part of. Nor does this matter. Sending an empty | |
407 | * MDSMap is sufficient for getting the MDS to respawn. | |
408 | */ | |
522d829b | 409 | auto m = make_message<MMDSMap>(mon.monmap->fsid, MDSMap::create_null_mdsmap()); |
f67539c2 | 410 | mon.send_reply(op, m.detach()); |
7c673cae FG |
411 | return true; |
412 | } else { | |
413 | return false; // not booted yet. | |
414 | } | |
415 | } | |
416 | dout(10) << __func__ << ": GID exists in map: " << gid << dendl; | |
28e407b8 | 417 | info = fsmap.get_info_gid(gid); |
7c673cae | 418 | |
f91f0fd5 TL |
419 | if (state == MDSMap::STATE_DNE) { |
420 | return false; | |
421 | } | |
422 | ||
7c673cae FG |
423 | // old seq? |
424 | if (info.state_seq > seq) { | |
425 | dout(7) << "mds_beacon " << *m << " has old seq, ignoring" << dendl; | |
426 | goto ignore; | |
427 | } | |
428 | ||
429 | // Work out the latest epoch that this daemon should have seen | |
430 | { | |
28e407b8 | 431 | fs_cluster_id_t fscid = fsmap.mds_roles.at(gid); |
7c673cae | 432 | if (fscid == FS_CLUSTER_ID_NONE) { |
28e407b8 | 433 | effective_epoch = fsmap.standby_epochs.at(gid); |
7c673cae | 434 | } else { |
28e407b8 | 435 | effective_epoch = fsmap.get_filesystem(fscid)->mds_map.epoch; |
7c673cae FG |
436 | } |
437 | if (effective_epoch != m->get_last_epoch_seen()) { | |
438 | dout(10) << "mds_beacon " << *m | |
439 | << " ignoring requested state, because mds hasn't seen latest map" << dendl; | |
440 | goto reply; | |
441 | } | |
442 | } | |
443 | ||
444 | if (info.laggy()) { | |
445 | _note_beacon(m); | |
446 | return false; // no longer laggy, need to update map. | |
447 | } | |
448 | if (state == MDSMap::STATE_BOOT) { | |
449 | // ignore, already booted. | |
450 | goto ignore; | |
451 | } | |
9f95a23c TL |
452 | |
453 | // did the join_fscid change | |
454 | if (m->get_fs().size()) { | |
455 | fs_cluster_id_t fscid = FS_CLUSTER_ID_NONE; | |
456 | auto f = fsmap.get_filesystem(m->get_fs()); | |
457 | if (f) { | |
458 | fscid = f->fscid; | |
459 | } | |
460 | if (info.join_fscid != fscid) { | |
461 | dout(10) << __func__ << " standby mds_join_fs changed to " << fscid | |
462 | << " (" << m->get_fs() << ")" << dendl; | |
463 | _note_beacon(m); | |
464 | return false; | |
465 | } | |
466 | } else { | |
467 | if (info.join_fscid != FS_CLUSTER_ID_NONE) { | |
468 | dout(10) << __func__ << " standby mds_join_fs was cleared" << dendl; | |
469 | _note_beacon(m); | |
470 | return false; | |
471 | } | |
472 | } | |
473 | ||
7c673cae FG |
474 | // is there a state change here? |
475 | if (info.state != state) { | |
476 | // legal state change? | |
477 | if ((info.state == MDSMap::STATE_STANDBY || | |
478 | info.state == MDSMap::STATE_STANDBY_REPLAY) && state > 0) { | |
479 | dout(10) << "mds_beacon mds can't activate itself (" << ceph_mds_state_name(info.state) | |
480 | << " -> " << ceph_mds_state_name(state) << ")" << dendl; | |
481 | goto reply; | |
482 | } | |
483 | ||
484 | if ((state == MDSMap::STATE_STANDBY || state == MDSMap::STATE_STANDBY_REPLAY) | |
485 | && info.rank != MDS_RANK_NONE) | |
486 | { | |
487 | dout(4) << "mds_beacon MDS can't go back into standby after taking rank: " | |
488 | "held rank " << info.rank << " while requesting state " | |
489 | << ceph_mds_state_name(state) << dendl; | |
490 | goto reply; | |
491 | } | |
492 | ||
493 | _note_beacon(m); | |
494 | return false; | |
495 | } | |
496 | ||
497 | // Comparing known daemon health with m->get_health() | |
498 | // and return false (i.e. require proposal) if they | |
499 | // do not match, to update our stored | |
500 | if (!(pending_daemon_health[gid] == m->get_health())) { | |
91327a77 | 501 | dout(10) << __func__ << " health metrics for gid " << gid << " were updated" << dendl; |
7c673cae FG |
502 | _note_beacon(m); |
503 | return false; | |
504 | } | |
505 | ||
506 | reply: | |
507 | // note time and reply | |
11fdf7f2 | 508 | ceph_assert(effective_epoch > 0); |
7c673cae | 509 | _note_beacon(m); |
11fdf7f2 | 510 | { |
f67539c2 | 511 | auto beacon = make_message<MMDSBeacon>(mon.monmap->fsid, |
11fdf7f2 TL |
512 | m->get_global_id(), m->get_name(), effective_epoch, |
513 | state, seq, CEPH_FEATURES_SUPPORTED_DEFAULT); | |
f67539c2 | 514 | mon.send_reply(op, beacon.detach()); |
11fdf7f2 | 515 | } |
7c673cae FG |
516 | return true; |
517 | ||
518 | ignore: | |
519 | // I won't reply this beacon, drop it. | |
f67539c2 | 520 | mon.no_reply(op); |
7c673cae FG |
521 | return true; |
522 | } | |
523 | ||
524 | bool MDSMonitor::preprocess_offload_targets(MonOpRequestRef op) | |
525 | { | |
526 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 527 | auto m = op->get_req<MMDSLoadTargets>(); |
7c673cae | 528 | dout(10) << "preprocess_offload_targets " << *m << " from " << m->get_orig_source() << dendl; |
28e407b8 | 529 | |
1adf2230 | 530 | const auto &fsmap = get_fsmap(); |
7c673cae FG |
531 | |
532 | // check privileges, ignore message if fails | |
11fdf7f2 | 533 | MonSession *session = op->get_session(); |
7c673cae | 534 | if (!session) |
1adf2230 | 535 | goto ignore; |
7c673cae FG |
536 | if (!session->is_capable("mds", MON_CAP_X)) { |
537 | dout(0) << "preprocess_offload_targets got MMDSLoadTargets from entity with insufficient caps " | |
538 | << session->caps << dendl; | |
1adf2230 | 539 | goto ignore; |
7c673cae FG |
540 | } |
541 | ||
542 | if (fsmap.gid_exists(m->global_id) && | |
543 | m->targets == fsmap.get_info_gid(m->global_id).export_targets) | |
1adf2230 | 544 | goto ignore; |
7c673cae FG |
545 | |
546 | return false; | |
547 | ||
1adf2230 | 548 | ignore: |
f67539c2 | 549 | mon.no_reply(op); |
7c673cae FG |
550 | return true; |
551 | } | |
552 | ||
553 | ||
554 | bool MDSMonitor::prepare_update(MonOpRequestRef op) | |
555 | { | |
556 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 557 | auto m = op->get_req<PaxosServiceMessage>(); |
7c673cae FG |
558 | dout(7) << "prepare_update " << *m << dendl; |
559 | ||
560 | switch (m->get_type()) { | |
561 | ||
562 | case MSG_MDS_BEACON: | |
563 | return prepare_beacon(op); | |
564 | ||
565 | case MSG_MON_COMMAND: | |
f64942e4 AA |
566 | try { |
567 | return prepare_command(op); | |
11fdf7f2 | 568 | } catch (const bad_cmd_get& e) { |
f64942e4 | 569 | bufferlist bl; |
f67539c2 | 570 | mon.reply_command(op, -EINVAL, e.what(), bl, get_last_committed()); |
f64942e4 AA |
571 | return true; |
572 | } | |
7c673cae FG |
573 | |
574 | case MSG_MDS_OFFLOAD_TARGETS: | |
575 | return prepare_offload_targets(op); | |
576 | ||
577 | default: | |
578 | ceph_abort(); | |
579 | } | |
580 | ||
581 | return true; | |
582 | } | |
583 | ||
584 | bool MDSMonitor::prepare_beacon(MonOpRequestRef op) | |
585 | { | |
586 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 587 | auto m = op->get_req<MMDSBeacon>(); |
7c673cae | 588 | // -- this is an update -- |
11fdf7f2 TL |
589 | dout(12) << "prepare_beacon " << *m << " from " << m->get_orig_source() |
590 | << " " << m->get_orig_source_addrs() << dendl; | |
591 | entity_addrvec_t addrs = m->get_orig_source_addrs(); | |
7c673cae FG |
592 | mds_gid_t gid = m->get_global_id(); |
593 | MDSMap::DaemonState state = m->get_state(); | |
594 | version_t seq = m->get_seq(); | |
595 | ||
28e407b8 AA |
596 | auto &pending = get_pending_fsmap_writeable(); |
597 | ||
91327a77 | 598 | dout(15) << __func__ << " got health from gid " << gid << " with " << m->get_health().metrics.size() << " metrics." << dendl; |
7c673cae FG |
599 | |
600 | // Calculate deltas of health metrics created and removed | |
601 | // Do this by type rather than MDSHealthMetric equality, because messages can | |
602 | // change a lot when they include e.g. a number of items. | |
603 | const auto &old_health = pending_daemon_health[gid].metrics; | |
604 | const auto &new_health = m->get_health().metrics; | |
605 | ||
606 | std::set<mds_metric_t> old_types; | |
607 | for (const auto &i : old_health) { | |
608 | old_types.insert(i.type); | |
609 | } | |
610 | ||
611 | std::set<mds_metric_t> new_types; | |
612 | for (const auto &i : new_health) { | |
613 | new_types.insert(i.type); | |
614 | } | |
615 | ||
616 | for (const auto &new_metric: new_health) { | |
617 | if (old_types.count(new_metric.type) == 0) { | |
11fdf7f2 | 618 | dout(10) << "MDS health message (" << m->get_orig_source() |
28e407b8 | 619 | << "): " << new_metric.sev << " " << new_metric.message << dendl; |
7c673cae FG |
620 | } |
621 | } | |
622 | ||
623 | // Log the disappearance of health messages at INFO | |
624 | for (const auto &old_metric : old_health) { | |
625 | if (new_types.count(old_metric.type) == 0) { | |
f67539c2 | 626 | mon.clog->info() << "MDS health message cleared (" |
11fdf7f2 | 627 | << m->get_orig_source() << "): " << old_metric.message; |
7c673cae FG |
628 | } |
629 | } | |
630 | ||
631 | // Store health | |
632 | pending_daemon_health[gid] = m->get_health(); | |
633 | ||
522d829b | 634 | const auto& cs = m->get_compat(); |
7c673cae FG |
635 | if (state == MDSMap::STATE_BOOT) { |
636 | // zap previous instance of this name? | |
11fdf7f2 | 637 | if (g_conf()->mds_enforce_unique_name) { |
7c673cae | 638 | bool failed_mds = false; |
28e407b8 | 639 | while (mds_gid_t existing = pending.find_mds_gid_by_name(m->get_name())) { |
f67539c2 TL |
640 | if (!mon.osdmon()->is_writeable()) { |
641 | mon.osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
7c673cae FG |
642 | return false; |
643 | } | |
522d829b | 644 | const auto& existing_info = pending.get_info_gid(existing); |
f67539c2 | 645 | mon.clog->info() << existing_info.human_name() << " restarted"; |
1adf2230 | 646 | fail_mds_gid(pending, existing); |
7c673cae FG |
647 | failed_mds = true; |
648 | } | |
649 | if (failed_mds) { | |
f67539c2 TL |
650 | ceph_assert(mon.osdmon()->is_writeable()); |
651 | request_proposal(mon.osdmon()); | |
7c673cae FG |
652 | } |
653 | } | |
654 | ||
655 | // Add this daemon to the map | |
28e407b8 | 656 | if (pending.mds_roles.count(gid) == 0) { |
7c673cae FG |
657 | MDSMap::mds_info_t new_info; |
658 | new_info.global_id = gid; | |
659 | new_info.name = m->get_name(); | |
11fdf7f2 | 660 | new_info.addrs = addrs; |
7c673cae FG |
661 | new_info.mds_features = m->get_mds_features(); |
662 | new_info.state = MDSMap::STATE_STANDBY; | |
663 | new_info.state_seq = seq; | |
522d829b | 664 | new_info.compat = cs; |
9f95a23c TL |
665 | if (m->get_fs().size()) { |
666 | fs_cluster_id_t fscid = FS_CLUSTER_ID_NONE; | |
667 | auto f = pending.get_filesystem(m->get_fs()); | |
668 | if (f) { | |
669 | fscid = f->fscid; | |
670 | } | |
671 | new_info.join_fscid = fscid; | |
672 | } | |
522d829b | 673 | pending.insert(new_info); |
7c673cae FG |
674 | } |
675 | ||
7c673cae | 676 | // initialize the beacon timer |
1adf2230 AA |
677 | auto &beacon = last_beacon[gid]; |
678 | beacon.stamp = mono_clock::now(); | |
679 | beacon.seq = seq; | |
7c673cae | 680 | |
7c673cae FG |
681 | update_metadata(m->get_global_id(), m->get_sys_info()); |
682 | } else { | |
683 | // state update | |
91327a77 AA |
684 | |
685 | if (!pending.gid_exists(gid)) { | |
686 | /* gid has been removed from pending, send null map */ | |
687 | dout(5) << "mds_beacon " << *m << " is not in fsmap (state " | |
688 | << ceph_mds_state_name(state) << ")" << dendl; | |
689 | ||
690 | /* We can't send an MDSMap this MDS was a part of because we no longer | |
691 | * know which FS it was part of. Nor does this matter. Sending an empty | |
692 | * MDSMap is sufficient for getting the MDS to respawn. | |
693 | */ | |
9f95a23c | 694 | wait_for_finished_proposal(op, new LambdaContext([op, this](int r){ |
91327a77 | 695 | if (r >= 0) { |
522d829b | 696 | auto m = make_message<MMDSMap>(mon.monmap->fsid, MDSMap::create_null_mdsmap()); |
f67539c2 | 697 | mon.send_reply(op, m.detach()); |
91327a77 AA |
698 | } else { |
699 | dispatch(op); // try again | |
700 | } | |
701 | })); | |
702 | return true; | |
703 | } | |
704 | ||
11fdf7f2 | 705 | const auto& info = pending.get_info_gid(gid); |
522d829b TL |
706 | |
707 | // did the reported compat change? That's illegal! | |
708 | if (cs.compare(info.compat) != 0) { | |
709 | if (!mon.osdmon()->is_writeable()) { | |
710 | mon.osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
711 | return false; | |
712 | } | |
713 | mon.clog->warn() << info.human_name() << " compat changed unexpectedly"; | |
714 | fail_mds_gid(pending, gid); | |
715 | request_proposal(mon.osdmon()); | |
716 | return true; | |
717 | } | |
718 | ||
f64942e4 AA |
719 | if (info.state == MDSMap::STATE_STOPPING && |
720 | state != MDSMap::STATE_STOPPING && | |
721 | state != MDSMap::STATE_STOPPED) { | |
7c673cae FG |
722 | // we can't transition to any other states from STOPPING |
723 | dout(0) << "got beacon for MDS in STATE_STOPPING, ignoring requested state change" | |
724 | << dendl; | |
725 | _note_beacon(m); | |
726 | return true; | |
727 | } | |
728 | ||
729 | if (info.laggy()) { | |
11fdf7f2 TL |
730 | dout(1) << "prepare_beacon clearing laggy flag on " << addrs << dendl; |
731 | pending.modify_daemon(info.global_id, [](auto& info) | |
7c673cae | 732 | { |
11fdf7f2 | 733 | info.clear_laggy(); |
7c673cae FG |
734 | } |
735 | ); | |
736 | } | |
9f95a23c | 737 | |
91327a77 | 738 | dout(5) << "prepare_beacon mds." << info.rank |
7c673cae FG |
739 | << " " << ceph_mds_state_name(info.state) |
740 | << " -> " << ceph_mds_state_name(state) | |
7c673cae | 741 | << dendl; |
9f95a23c TL |
742 | |
743 | fs_cluster_id_t fscid = FS_CLUSTER_ID_NONE; | |
744 | if (m->get_fs().size()) { | |
745 | auto f = pending.get_filesystem(m->get_fs()); | |
746 | if (f) { | |
747 | fscid = f->fscid; | |
748 | } | |
749 | } | |
750 | pending.modify_daemon(gid, [fscid](auto& info) { | |
751 | info.join_fscid = fscid; | |
752 | }); | |
753 | ||
7c673cae | 754 | if (state == MDSMap::STATE_STOPPED) { |
28e407b8 AA |
755 | const auto fscid = pending.mds_roles.at(gid); |
756 | const auto &fs = pending.get_filesystem(fscid); | |
181888fb | 757 | |
f67539c2 | 758 | mon.clog->info() << info.human_name() << " finished " |
11fdf7f2 | 759 | << "stopping rank " << info.rank << " in filesystem " |
d2e6a577 | 760 | << fs->mds_map.fs_name << " (now has " |
181888fb | 761 | << fs->mds_map.get_num_in_mds() - 1 << " ranks)"; |
d2e6a577 | 762 | |
28e407b8 | 763 | auto erased = pending.stop(gid); |
7c673cae FG |
764 | erased.push_back(gid); |
765 | ||
9f95a23c | 766 | for (const auto& erased_gid : erased) { |
7c673cae FG |
767 | last_beacon.erase(erased_gid); |
768 | if (pending_daemon_health.count(erased_gid)) { | |
769 | pending_daemon_health.erase(erased_gid); | |
770 | pending_daemon_health_rm.insert(erased_gid); | |
771 | } | |
772 | } | |
d2e6a577 FG |
773 | |
774 | ||
7c673cae | 775 | } else if (state == MDSMap::STATE_DAMAGED) { |
f67539c2 | 776 | if (!mon.osdmon()->is_writeable()) { |
91327a77 | 777 | dout(1) << __func__ << ": DAMAGED from rank " << info.rank |
f67539c2 TL |
778 | << " waiting for osdmon writeable to blocklist it" << dendl; |
779 | mon.osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
7c673cae FG |
780 | return false; |
781 | } | |
782 | ||
783 | // Record this MDS rank as damaged, so that other daemons | |
784 | // won't try to run it. | |
91327a77 | 785 | dout(0) << __func__ << ": marking rank " |
7c673cae FG |
786 | << info.rank << " damaged" << dendl; |
787 | ||
788 | utime_t until = ceph_clock_now(); | |
f67539c2 TL |
789 | until += g_conf().get_val<double>("mon_mds_blocklist_interval"); |
790 | const auto blocklist_epoch = mon.osdmon()->blocklist(info.addrs, until); | |
791 | request_proposal(mon.osdmon()); | |
792 | pending.damaged(gid, blocklist_epoch); | |
7c673cae FG |
793 | last_beacon.erase(gid); |
794 | ||
795 | // Respond to MDS, so that it knows it can continue to shut down | |
9f95a23c | 796 | auto beacon = make_message<MMDSBeacon>( |
f67539c2 | 797 | mon.monmap->fsid, m->get_global_id(), |
28e407b8 | 798 | m->get_name(), pending.get_epoch(), state, seq, |
11fdf7f2 | 799 | CEPH_FEATURES_SUPPORTED_DEFAULT); |
f67539c2 | 800 | mon.send_reply(op, beacon.detach()); |
7c673cae | 801 | } else if (state == MDSMap::STATE_DNE) { |
f67539c2 | 802 | if (!mon.osdmon()->is_writeable()) { |
91327a77 | 803 | dout(1) << __func__ << ": DNE from rank " << info.rank |
f67539c2 TL |
804 | << " waiting for osdmon writeable to blocklist it" << dendl; |
805 | mon.osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); | |
7c673cae FG |
806 | return false; |
807 | } | |
808 | ||
1adf2230 | 809 | fail_mds_gid(pending, gid); |
f67539c2 TL |
810 | ceph_assert(mon.osdmon()->is_writeable()); |
811 | request_proposal(mon.osdmon()); | |
7c673cae FG |
812 | |
813 | // Respond to MDS, so that it knows it can continue to shut down | |
f67539c2 | 814 | auto beacon = make_message<MMDSBeacon>(mon.monmap->fsid, |
11fdf7f2 TL |
815 | m->get_global_id(), m->get_name(), pending.get_epoch(), state, seq, |
816 | CEPH_FEATURES_SUPPORTED_DEFAULT); | |
f67539c2 | 817 | mon.send_reply(op, beacon.detach()); |
7c673cae FG |
818 | } else if (info.state == MDSMap::STATE_STANDBY && state != info.state) { |
819 | // Standby daemons should never modify their own | |
820 | // state. Reject any attempts to do so. | |
821 | derr << "standby " << gid << " attempted to change state to " | |
822 | << ceph_mds_state_name(state) << ", rejecting" << dendl; | |
823 | return true; | |
824 | } else if (info.state != MDSMap::STATE_STANDBY && state != info.state && | |
825 | !MDSMap::state_transition_valid(info.state, state)) { | |
826 | // Validate state transitions for daemons that hold a rank | |
827 | derr << "daemon " << gid << " (rank " << info.rank << ") " | |
828 | << "reported invalid state transition " | |
829 | << ceph_mds_state_name(info.state) << " -> " | |
830 | << ceph_mds_state_name(state) << dendl; | |
831 | return true; | |
832 | } else { | |
b32b8144 | 833 | if (info.state != MDSMap::STATE_ACTIVE && state == MDSMap::STATE_ACTIVE) { |
28e407b8 AA |
834 | const auto &fscid = pending.mds_roles.at(gid); |
835 | const auto &fs = pending.get_filesystem(fscid); | |
f67539c2 | 836 | mon.clog->info() << info.human_name() << " is now active in " |
d2e6a577 FG |
837 | << "filesystem " << fs->mds_map.fs_name << " as rank " |
838 | << info.rank; | |
839 | } | |
b32b8144 FG |
840 | |
841 | // Made it through special cases and validations, record the | |
842 | // daemon's reported state to the FSMap. | |
11fdf7f2 TL |
843 | pending.modify_daemon(gid, [state, seq](auto& info) { |
844 | info.state = state; | |
845 | info.state_seq = seq; | |
b32b8144 | 846 | }); |
7c673cae FG |
847 | } |
848 | } | |
849 | ||
91327a77 | 850 | dout(5) << "prepare_beacon pending map now:" << dendl; |
28e407b8 | 851 | print_map(pending); |
7c673cae | 852 | |
9f95a23c | 853 | wait_for_finished_proposal(op, new LambdaContext([op, this](int r){ |
7c673cae FG |
854 | if (r >= 0) |
855 | _updated(op); // success | |
856 | else if (r == -ECANCELED) { | |
f67539c2 | 857 | mon.no_reply(op); |
7c673cae FG |
858 | } else { |
859 | dispatch(op); // try again | |
860 | } | |
861 | })); | |
862 | ||
863 | return true; | |
864 | } | |
865 | ||
866 | bool MDSMonitor::prepare_offload_targets(MonOpRequestRef op) | |
867 | { | |
28e407b8 AA |
868 | auto &pending = get_pending_fsmap_writeable(); |
869 | ||
7c673cae | 870 | op->mark_mdsmon_event(__func__); |
9f95a23c | 871 | auto m = op->get_req<MMDSLoadTargets>(); |
7c673cae | 872 | mds_gid_t gid = m->global_id; |
28e407b8 | 873 | if (pending.gid_has_rank(gid)) { |
7c673cae | 874 | dout(10) << "prepare_offload_targets " << gid << " " << m->targets << dendl; |
28e407b8 | 875 | pending.update_export_targets(gid, m->targets); |
7c673cae FG |
876 | } else { |
877 | dout(10) << "prepare_offload_targets " << gid << " not in map" << dendl; | |
878 | } | |
f67539c2 | 879 | mon.no_reply(op); |
7c673cae FG |
880 | return true; |
881 | } | |
882 | ||
883 | bool MDSMonitor::should_propose(double& delay) | |
884 | { | |
885 | // delegate to PaxosService to assess whether we should propose | |
886 | return PaxosService::should_propose(delay); | |
887 | } | |
888 | ||
889 | void MDSMonitor::_updated(MonOpRequestRef op) | |
890 | { | |
28e407b8 | 891 | const auto &fsmap = get_fsmap(); |
7c673cae | 892 | op->mark_mdsmon_event(__func__); |
9f95a23c | 893 | auto m = op->get_req<MMDSBeacon>(); |
7c673cae | 894 | dout(10) << "_updated " << m->get_orig_source() << " " << *m << dendl; |
f67539c2 | 895 | mon.clog->debug() << m->get_orig_source() << " " |
11fdf7f2 TL |
896 | << m->get_orig_source_addrs() << " " |
897 | << ceph_mds_state_name(m->get_state()); | |
7c673cae FG |
898 | |
899 | if (m->get_state() == MDSMap::STATE_STOPPED) { | |
900 | // send the map manually (they're out of the map, so they won't get it automatic) | |
522d829b | 901 | auto m = make_message<MMDSMap>(mon.monmap->fsid, MDSMap::create_null_mdsmap()); |
f67539c2 | 902 | mon.send_reply(op, m.detach()); |
7c673cae | 903 | } else { |
f67539c2 | 904 | auto beacon = make_message<MMDSBeacon>(mon.monmap->fsid, |
11fdf7f2 TL |
905 | m->get_global_id(), m->get_name(), fsmap.get_epoch(), |
906 | m->get_state(), m->get_seq(), CEPH_FEATURES_SUPPORTED_DEFAULT); | |
f67539c2 | 907 | mon.send_reply(op, beacon.detach()); |
7c673cae FG |
908 | } |
909 | } | |
910 | ||
911 | void MDSMonitor::on_active() | |
912 | { | |
913 | tick(); | |
7c673cae | 914 | |
28e407b8 | 915 | if (is_leader()) { |
f67539c2 | 916 | mon.clog->debug() << "fsmap " << get_fsmap(); |
224ce89b | 917 | } |
7c673cae FG |
918 | } |
919 | ||
7c673cae FG |
920 | void MDSMonitor::dump_info(Formatter *f) |
921 | { | |
922 | f->open_object_section("fsmap"); | |
28e407b8 | 923 | get_fsmap().dump(f); |
7c673cae FG |
924 | f->close_section(); |
925 | ||
926 | f->dump_unsigned("mdsmap_first_committed", get_first_committed()); | |
927 | f->dump_unsigned("mdsmap_last_committed", get_last_committed()); | |
928 | } | |
929 | ||
930 | bool MDSMonitor::preprocess_command(MonOpRequestRef op) | |
931 | { | |
932 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 933 | auto m = op->get_req<MMonCommand>(); |
7c673cae FG |
934 | int r = -1; |
935 | bufferlist rdata; | |
936 | stringstream ss, ds; | |
937 | ||
11fdf7f2 | 938 | cmdmap_t cmdmap; |
7c673cae FG |
939 | if (!cmdmap_from_json(m->cmd, &cmdmap, ss)) { |
940 | // ss has reason for failure | |
941 | string rs = ss.str(); | |
f67539c2 | 942 | mon.reply_command(op, -EINVAL, rs, rdata, get_last_committed()); |
7c673cae FG |
943 | return true; |
944 | } | |
945 | ||
946 | string prefix; | |
9f95a23c | 947 | cmd_getval(cmdmap, "prefix", prefix); |
7c673cae | 948 | string format; |
9f95a23c | 949 | cmd_getval(cmdmap, "format", format, string("plain")); |
1adf2230 | 950 | std::unique_ptr<Formatter> f(Formatter::create(format)); |
7c673cae | 951 | |
11fdf7f2 | 952 | MonSession *session = op->get_session(); |
7c673cae | 953 | if (!session) { |
f67539c2 | 954 | mon.reply_command(op, -EACCES, "access denied", rdata, get_last_committed()); |
7c673cae FG |
955 | return true; |
956 | } | |
957 | ||
f67539c2 TL |
958 | // to use const qualifier filter fsmap beforehand |
959 | FSMap _fsmap_copy = get_fsmap(); | |
960 | _fsmap_copy.filter(session->get_allowed_fs_names()); | |
961 | const auto& fsmap = _fsmap_copy; | |
962 | ||
7c673cae FG |
963 | if (prefix == "mds stat") { |
964 | if (f) { | |
965 | f->open_object_section("mds_stat"); | |
966 | dump_info(f.get()); | |
967 | f->close_section(); | |
968 | f->flush(ds); | |
969 | } else { | |
970 | ds << fsmap; | |
971 | } | |
972 | r = 0; | |
11fdf7f2 TL |
973 | } else if (prefix == "mds ok-to-stop") { |
974 | vector<string> ids; | |
9f95a23c | 975 | if (!cmd_getval(cmdmap, "ids", ids)) { |
11fdf7f2 TL |
976 | r = -EINVAL; |
977 | ss << "must specify mds id"; | |
978 | goto out; | |
979 | } | |
980 | if (fsmap.is_any_degraded()) { | |
981 | ss << "one or more filesystems is currently degraded"; | |
982 | r = -EBUSY; | |
983 | goto out; | |
984 | } | |
985 | set<mds_gid_t> stopping; | |
986 | for (auto& id : ids) { | |
987 | ostringstream ess; | |
988 | mds_gid_t gid = gid_from_arg(fsmap, id, ess); | |
989 | if (gid == MDS_GID_NONE) { | |
990 | // the mds doesn't exist, but no file systems are unhappy, so losing it | |
991 | // can't have any effect. | |
992 | continue; | |
993 | } | |
994 | stopping.insert(gid); | |
995 | } | |
996 | set<mds_gid_t> active; | |
997 | set<mds_gid_t> standby; | |
998 | for (auto gid : stopping) { | |
999 | if (fsmap.gid_has_rank(gid)) { | |
1000 | // ignore standby-replay daemons (at this level) | |
1001 | if (!fsmap.is_standby_replay(gid)) { | |
1002 | auto standby = fsmap.get_standby_replay(gid); | |
1003 | if (standby == MDS_GID_NONE || | |
1004 | stopping.count(standby)) { | |
1005 | // no standby-replay, or we're also stopping the standby-replay | |
1006 | // for this mds | |
1007 | active.insert(gid); | |
1008 | } | |
1009 | } | |
7c673cae | 1010 | } else { |
11fdf7f2 TL |
1011 | // net loss of a standby |
1012 | standby.insert(gid); | |
7c673cae FG |
1013 | } |
1014 | } | |
11fdf7f2 TL |
1015 | if (fsmap.get_num_standby() - standby.size() < active.size()) { |
1016 | r = -EBUSY; | |
1017 | ss << "insufficent standby MDS daemons to stop active gids " | |
1018 | << stringify(active) | |
1019 | << " and/or standby gids " << stringify(standby);; | |
1020 | goto out; | |
28e407b8 | 1021 | } |
11fdf7f2 TL |
1022 | r = 0; |
1023 | ss << "should be safe to stop " << ids; | |
7c673cae FG |
1024 | } else if (prefix == "fs dump") { |
1025 | int64_t epocharg; | |
1026 | epoch_t epoch; | |
1027 | ||
1adf2230 | 1028 | const FSMap *fsmapp = &fsmap; |
28e407b8 | 1029 | FSMap dummy; |
9f95a23c | 1030 | if (cmd_getval(cmdmap, "epoch", epocharg)) { |
7c673cae FG |
1031 | epoch = epocharg; |
1032 | bufferlist b; | |
1033 | int err = get_version(epoch, b); | |
1034 | if (err == -ENOENT) { | |
7c673cae | 1035 | r = -ENOENT; |
28e407b8 | 1036 | goto out; |
7c673cae | 1037 | } else { |
11fdf7f2 TL |
1038 | ceph_assert(err == 0); |
1039 | ceph_assert(b.length()); | |
28e407b8 AA |
1040 | dummy.decode(b); |
1041 | fsmapp = &dummy; | |
7c673cae FG |
1042 | } |
1043 | } | |
c07f9fc5 | 1044 | |
28e407b8 AA |
1045 | stringstream ds; |
1046 | if (f != NULL) { | |
1047 | f->open_object_section("fsmap"); | |
1048 | fsmapp->dump(f.get()); | |
1049 | f->close_section(); | |
1050 | f->flush(ds); | |
1051 | r = 0; | |
1052 | } else { | |
1053 | fsmapp->print(ds); | |
1054 | r = 0; | |
7c673cae | 1055 | } |
28e407b8 AA |
1056 | |
1057 | rdata.append(ds); | |
1058 | ss << "dumped fsmap epoch " << fsmapp->get_epoch(); | |
7c673cae FG |
1059 | } else if (prefix == "mds metadata") { |
1060 | if (!f) | |
1061 | f.reset(Formatter::create("json-pretty")); | |
1062 | ||
1063 | string who; | |
9f95a23c | 1064 | bool all = !cmd_getval(cmdmap, "who", who); |
7c673cae FG |
1065 | dout(1) << "all = " << all << dendl; |
1066 | if (all) { | |
1067 | r = 0; | |
1068 | // Dump all MDSs' metadata | |
1069 | const auto all_info = fsmap.get_mds_info(); | |
1070 | ||
1071 | f->open_array_section("mds_metadata"); | |
1072 | for(const auto &i : all_info) { | |
1073 | const auto &info = i.second; | |
1074 | ||
1075 | f->open_object_section("mds"); | |
1076 | f->dump_string("name", info.name); | |
1077 | std::ostringstream get_err; | |
1adf2230 | 1078 | r = dump_metadata(fsmap, info.name, f.get(), get_err); |
7c673cae FG |
1079 | if (r == -EINVAL || r == -ENOENT) { |
1080 | // Drop error, list what metadata we do have | |
1081 | dout(1) << get_err.str() << dendl; | |
1082 | r = 0; | |
1083 | } else if (r != 0) { | |
1084 | derr << "Unexpected error reading metadata: " << cpp_strerror(r) | |
1085 | << dendl; | |
1086 | ss << get_err.str(); | |
c07f9fc5 | 1087 | f->close_section(); |
7c673cae FG |
1088 | break; |
1089 | } | |
1090 | f->close_section(); | |
1091 | } | |
1092 | f->close_section(); | |
1093 | } else { | |
1094 | // Dump a single daemon's metadata | |
1095 | f->open_object_section("mds_metadata"); | |
1adf2230 | 1096 | r = dump_metadata(fsmap, who, f.get(), ss); |
7c673cae FG |
1097 | f->close_section(); |
1098 | } | |
1099 | f->flush(ds); | |
31f18b77 FG |
1100 | } else if (prefix == "mds versions") { |
1101 | if (!f) | |
1102 | f.reset(Formatter::create("json-pretty")); | |
1103 | count_metadata("ceph_version", f.get()); | |
1104 | f->flush(ds); | |
1105 | r = 0; | |
1106 | } else if (prefix == "mds count-metadata") { | |
1107 | if (!f) | |
1108 | f.reset(Formatter::create("json-pretty")); | |
1109 | string field; | |
9f95a23c | 1110 | cmd_getval(cmdmap, "property", field); |
31f18b77 FG |
1111 | count_metadata(field, f.get()); |
1112 | f->flush(ds); | |
1113 | r = 0; | |
522d829b TL |
1114 | } else if (prefix == "fs compat show") { |
1115 | string fs_name; | |
1116 | cmd_getval(cmdmap, "fs_name", fs_name); | |
1117 | const auto &fs = fsmap.get_filesystem(fs_name); | |
1118 | if (fs == nullptr) { | |
1119 | ss << "filesystem '" << fs_name << "' not found"; | |
1120 | r = -ENOENT; | |
1121 | goto out; | |
1122 | } | |
1123 | ||
1124 | if (f) { | |
1125 | f->open_object_section("mds_compat"); | |
1126 | fs->mds_map.compat.dump(f.get()); | |
1127 | f->close_section(); | |
1128 | f->flush(ds); | |
1129 | } else { | |
1130 | ds << fs->mds_map.compat; | |
1131 | } | |
1132 | r = 0; | |
7c673cae FG |
1133 | } else if (prefix == "mds compat show") { |
1134 | if (f) { | |
1135 | f->open_object_section("mds_compat"); | |
522d829b | 1136 | fsmap.default_compat.dump(f.get()); |
7c673cae FG |
1137 | f->close_section(); |
1138 | f->flush(ds); | |
1139 | } else { | |
522d829b | 1140 | ds << fsmap.default_compat; |
7c673cae FG |
1141 | } |
1142 | r = 0; | |
1143 | } else if (prefix == "fs get") { | |
1144 | string fs_name; | |
9f95a23c | 1145 | cmd_getval(cmdmap, "fs_name", fs_name); |
28e407b8 | 1146 | const auto &fs = fsmap.get_filesystem(fs_name); |
7c673cae FG |
1147 | if (fs == nullptr) { |
1148 | ss << "filesystem '" << fs_name << "' not found"; | |
1149 | r = -ENOENT; | |
1150 | } else { | |
1151 | if (f != nullptr) { | |
1152 | f->open_object_section("filesystem"); | |
1153 | fs->dump(f.get()); | |
1154 | f->close_section(); | |
1155 | f->flush(ds); | |
1156 | r = 0; | |
1157 | } else { | |
1158 | fs->print(ds); | |
1159 | r = 0; | |
1160 | } | |
1161 | } | |
1162 | } else if (prefix == "fs ls") { | |
1163 | if (f) { | |
1164 | f->open_array_section("filesystems"); | |
1adf2230 AA |
1165 | for (const auto &p : fsmap.filesystems) { |
1166 | const auto &fs = p.second; | |
1167 | f->open_object_section("filesystem"); | |
1168 | { | |
1169 | const MDSMap &mds_map = fs->mds_map; | |
1170 | f->dump_string("name", mds_map.fs_name); | |
1171 | /* Output both the names and IDs of pools, for use by | |
1172 | * humans and machines respectively */ | |
f67539c2 | 1173 | f->dump_string("metadata_pool", mon.osdmon()->osdmap.get_pool_name( |
1adf2230 AA |
1174 | mds_map.metadata_pool)); |
1175 | f->dump_int("metadata_pool_id", mds_map.metadata_pool); | |
1176 | f->open_array_section("data_pool_ids"); | |
1177 | for (const auto &id : mds_map.data_pools) { | |
1178 | f->dump_int("data_pool_id", id); | |
1179 | } | |
1180 | f->close_section(); | |
7c673cae | 1181 | |
1adf2230 AA |
1182 | f->open_array_section("data_pools"); |
1183 | for (const auto &id : mds_map.data_pools) { | |
f67539c2 | 1184 | const auto &name = mon.osdmon()->osdmap.get_pool_name(id); |
1adf2230 | 1185 | f->dump_string("data_pool", name); |
7c673cae FG |
1186 | } |
1187 | f->close_section(); | |
1188 | } | |
1adf2230 | 1189 | f->close_section(); |
7c673cae FG |
1190 | } |
1191 | f->close_section(); | |
1192 | f->flush(ds); | |
1193 | } else { | |
28e407b8 AA |
1194 | for (const auto &p : fsmap.filesystems) { |
1195 | const auto &fs = p.second; | |
7c673cae | 1196 | const MDSMap &mds_map = fs->mds_map; |
f67539c2 | 1197 | const string &md_pool_name = mon.osdmon()->osdmap.get_pool_name( |
7c673cae FG |
1198 | mds_map.metadata_pool); |
1199 | ||
1200 | ds << "name: " << mds_map.fs_name << ", metadata pool: " | |
1201 | << md_pool_name << ", data pools: ["; | |
1adf2230 | 1202 | for (const auto &id : mds_map.data_pools) { |
f67539c2 | 1203 | const string &pool_name = mon.osdmon()->osdmap.get_pool_name(id); |
7c673cae FG |
1204 | ds << pool_name << " "; |
1205 | } | |
1206 | ds << "]" << std::endl; | |
1207 | } | |
1208 | ||
1209 | if (fsmap.filesystems.empty()) { | |
1210 | ds << "No filesystems enabled" << std::endl; | |
1211 | } | |
1212 | } | |
1213 | r = 0; | |
f67539c2 TL |
1214 | } else if (prefix == "fs feature ls") { |
1215 | if (f) { | |
1216 | f->open_array_section("cephfs_features"); | |
1217 | for (size_t i = 0; i <= CEPHFS_FEATURE_MAX; ++i) { | |
1218 | f->open_object_section("feature"); | |
1219 | f->dump_int("index", i); | |
1220 | f->dump_string("name", cephfs_feature_name(i)); | |
1221 | f->close_section(); | |
1222 | } | |
1223 | f->close_section(); | |
1224 | f->flush(ds); | |
1225 | } else { | |
1226 | for (size_t i = 0; i <= CEPHFS_FEATURE_MAX; ++i) { | |
1227 | ds << i << " " << cephfs_feature_name(i) << std::endl; | |
1228 | } | |
1229 | } | |
1230 | r = 0; | |
7c673cae FG |
1231 | } |
1232 | ||
28e407b8 | 1233 | out: |
7c673cae FG |
1234 | if (r != -1) { |
1235 | rdata.append(ds); | |
1236 | string rs; | |
1237 | getline(ss, rs); | |
f67539c2 | 1238 | mon.reply_command(op, r, rs, rdata, get_last_committed()); |
7c673cae FG |
1239 | return true; |
1240 | } else | |
1241 | return false; | |
1242 | } | |
1243 | ||
1adf2230 | 1244 | bool MDSMonitor::fail_mds_gid(FSMap &fsmap, mds_gid_t gid) |
7c673cae | 1245 | { |
9f95a23c | 1246 | const auto& info = fsmap.get_info_gid(gid); |
91327a77 | 1247 | dout(1) << "fail_mds_gid " << gid << " mds." << info.name << " role " << info.rank << dendl; |
7c673cae | 1248 | |
f67539c2 | 1249 | ceph_assert(mon.osdmon()->is_writeable()); |
a8e16298 | 1250 | |
f67539c2 | 1251 | epoch_t blocklist_epoch = 0; |
7c673cae FG |
1252 | if (info.rank >= 0 && info.state != MDSMap::STATE_STANDBY_REPLAY) { |
1253 | utime_t until = ceph_clock_now(); | |
f67539c2 TL |
1254 | until += g_conf().get_val<double>("mon_mds_blocklist_interval"); |
1255 | blocklist_epoch = mon.osdmon()->blocklist(info.addrs, until); | |
7c673cae FG |
1256 | } |
1257 | ||
f67539c2 | 1258 | fsmap.erase(gid, blocklist_epoch); |
7c673cae FG |
1259 | last_beacon.erase(gid); |
1260 | if (pending_daemon_health.count(gid)) { | |
1261 | pending_daemon_health.erase(gid); | |
1262 | pending_daemon_health_rm.insert(gid); | |
1263 | } | |
1264 | ||
f67539c2 | 1265 | return blocklist_epoch != 0; |
7c673cae FG |
1266 | } |
1267 | ||
1adf2230 | 1268 | mds_gid_t MDSMonitor::gid_from_arg(const FSMap &fsmap, const std::string &arg, std::ostream &ss) |
7c673cae FG |
1269 | { |
1270 | // Try parsing as a role | |
1271 | mds_role_t role; | |
1272 | std::ostringstream ignore_err; // Don't spam 'ss' with parse_role errors | |
1adf2230 | 1273 | int r = fsmap.parse_role(arg, &role, ignore_err); |
7c673cae FG |
1274 | if (r == 0) { |
1275 | // See if a GID is assigned to this role | |
28e407b8 | 1276 | const auto &fs = fsmap.get_filesystem(role.fscid); |
11fdf7f2 | 1277 | ceph_assert(fs != nullptr); // parse_role ensures it exists |
7c673cae FG |
1278 | if (fs->mds_map.is_up(role.rank)) { |
1279 | dout(10) << __func__ << ": validated rank/GID " << role | |
1280 | << " as a rank" << dendl; | |
1281 | return fs->mds_map.get_mds_info(role.rank).global_id; | |
1282 | } | |
1283 | } | |
1284 | ||
1285 | // Try parsing as a gid | |
1286 | std::string err; | |
1287 | unsigned long long maybe_gid = strict_strtoll(arg.c_str(), 10, &err); | |
1288 | if (!err.empty()) { | |
1289 | // Not a role or a GID, try as a daemon name | |
28e407b8 | 1290 | const MDSMap::mds_info_t *mds_info = fsmap.find_by_name(arg); |
7c673cae FG |
1291 | if (!mds_info) { |
1292 | ss << "MDS named '" << arg | |
1293 | << "' does not exist, or is not up"; | |
1294 | return MDS_GID_NONE; | |
1295 | } | |
1296 | dout(10) << __func__ << ": resolved MDS name '" << arg | |
1297 | << "' to GID " << mds_info->global_id << dendl; | |
1298 | return mds_info->global_id; | |
1299 | } else { | |
1300 | // Not a role, but parses as a an integer, might be a GID | |
1301 | dout(10) << __func__ << ": treating MDS reference '" << arg | |
1302 | << "' as an integer " << maybe_gid << dendl; | |
31f18b77 | 1303 | |
28e407b8 | 1304 | if (fsmap.gid_exists(mds_gid_t(maybe_gid))) { |
31f18b77 | 1305 | return mds_gid_t(maybe_gid); |
7c673cae FG |
1306 | } |
1307 | } | |
1308 | ||
1309 | dout(1) << __func__ << ": rank/GID " << arg | |
1310 | << " not a existent rank or GID" << dendl; | |
1311 | return MDS_GID_NONE; | |
1312 | } | |
1313 | ||
1adf2230 AA |
1314 | int MDSMonitor::fail_mds(FSMap &fsmap, std::ostream &ss, |
1315 | const std::string &arg, MDSMap::mds_info_t *failed_info) | |
7c673cae | 1316 | { |
11fdf7f2 | 1317 | ceph_assert(failed_info != nullptr); |
d2e6a577 | 1318 | |
1adf2230 | 1319 | mds_gid_t gid = gid_from_arg(fsmap, arg, ss); |
7c673cae FG |
1320 | if (gid == MDS_GID_NONE) { |
1321 | return 0; | |
1322 | } | |
f67539c2 | 1323 | if (!mon.osdmon()->is_writeable()) { |
7c673cae FG |
1324 | return -EAGAIN; |
1325 | } | |
d2e6a577 FG |
1326 | |
1327 | // Take a copy of the info before removing the MDS from the map, | |
1328 | // so that the caller knows which mds (if any) they ended up removing. | |
1adf2230 | 1329 | *failed_info = fsmap.get_info_gid(gid); |
d2e6a577 | 1330 | |
1adf2230 | 1331 | fail_mds_gid(fsmap, gid); |
7c673cae | 1332 | ss << "failed mds gid " << gid; |
f67539c2 TL |
1333 | ceph_assert(mon.osdmon()->is_writeable()); |
1334 | request_proposal(mon.osdmon()); | |
7c673cae FG |
1335 | return 0; |
1336 | } | |
1337 | ||
1338 | bool MDSMonitor::prepare_command(MonOpRequestRef op) | |
1339 | { | |
1340 | op->mark_mdsmon_event(__func__); | |
9f95a23c | 1341 | auto m = op->get_req<MMonCommand>(); |
7c673cae FG |
1342 | int r = -EINVAL; |
1343 | stringstream ss; | |
1344 | bufferlist rdata; | |
1345 | ||
11fdf7f2 | 1346 | cmdmap_t cmdmap; |
7c673cae FG |
1347 | if (!cmdmap_from_json(m->cmd, &cmdmap, ss)) { |
1348 | string rs = ss.str(); | |
f67539c2 | 1349 | mon.reply_command(op, -EINVAL, rs, rdata, get_last_committed()); |
7c673cae FG |
1350 | return true; |
1351 | } | |
1352 | ||
1353 | string prefix; | |
9f95a23c | 1354 | cmd_getval(cmdmap, "prefix", prefix); |
7c673cae FG |
1355 | |
1356 | /* Refuse access if message not associated with a valid session */ | |
11fdf7f2 | 1357 | MonSession *session = op->get_session(); |
7c673cae | 1358 | if (!session) { |
f67539c2 | 1359 | mon.reply_command(op, -EACCES, "access denied", rdata, get_last_committed()); |
7c673cae FG |
1360 | return true; |
1361 | } | |
1362 | ||
28e407b8 AA |
1363 | auto &pending = get_pending_fsmap_writeable(); |
1364 | ||
c07f9fc5 | 1365 | bool batched_propose = false; |
28e407b8 | 1366 | for (const auto &h : handlers) { |
f67539c2 TL |
1367 | r = h->can_handle(prefix, op, pending, cmdmap, ss); |
1368 | if (r == 1) { | |
1369 | ; // pass, since we got the right handler. | |
1370 | } else if (r == 0) { | |
1371 | continue; | |
1372 | } else { | |
1373 | goto out; | |
1374 | } | |
c07f9fc5 | 1375 | |
f67539c2 TL |
1376 | batched_propose = h->batched_propose(); |
1377 | if (batched_propose) { | |
1378 | paxos.plug(); | |
1379 | } | |
1380 | r = h->handle(&mon, pending, op, cmdmap, ss); | |
1381 | if (batched_propose) { | |
1382 | paxos.unplug(); | |
1383 | } | |
1384 | ||
1385 | if (r == -EAGAIN) { | |
1386 | // message has been enqueued for retry; return. | |
1387 | dout(4) << __func__ << " enqueue for retry by prepare_command" << dendl; | |
1388 | return false; | |
1389 | } else { | |
1390 | if (r == 0) { | |
1391 | // On successful updates, print the updated map | |
1392 | print_map(pending); | |
7c673cae | 1393 | } |
f67539c2 TL |
1394 | // Successful or not, we're done: respond. |
1395 | goto out; | |
7c673cae FG |
1396 | } |
1397 | } | |
1398 | ||
1adf2230 | 1399 | r = filesystem_command(pending, op, prefix, cmdmap, ss); |
7c673cae FG |
1400 | if (r >= 0) { |
1401 | goto out; | |
1402 | } else if (r == -EAGAIN) { | |
1403 | // Do not reply, the message has been enqueued for retry | |
1404 | dout(4) << __func__ << " enqueue for retry by filesystem_command" << dendl; | |
1405 | return false; | |
1406 | } else if (r != -ENOSYS) { | |
1407 | goto out; | |
1408 | } | |
1409 | ||
7c673cae FG |
1410 | if (r == -ENOSYS && ss.str().empty()) { |
1411 | ss << "unrecognized command"; | |
1412 | } | |
1413 | ||
1414 | out: | |
1415 | dout(4) << __func__ << " done, r=" << r << dendl; | |
1416 | /* Compose response */ | |
1417 | string rs; | |
1418 | getline(ss, rs); | |
1419 | ||
1420 | if (r >= 0) { | |
1421 | // success.. delay reply | |
1422 | wait_for_finished_proposal(op, new Monitor::C_Command(mon, op, r, rs, | |
1423 | get_last_committed() + 1)); | |
c07f9fc5 FG |
1424 | if (batched_propose) { |
1425 | force_immediate_propose(); | |
1426 | } | |
7c673cae FG |
1427 | return true; |
1428 | } else { | |
1429 | // reply immediately | |
f67539c2 | 1430 | mon.reply_command(op, r, rs, rdata, get_last_committed()); |
7c673cae FG |
1431 | return false; |
1432 | } | |
1433 | } | |
1434 | ||
7c673cae | 1435 | int MDSMonitor::filesystem_command( |
1adf2230 | 1436 | FSMap &fsmap, |
7c673cae FG |
1437 | MonOpRequestRef op, |
1438 | std::string const &prefix, | |
11fdf7f2 | 1439 | const cmdmap_t& cmdmap, |
7c673cae FG |
1440 | std::stringstream &ss) |
1441 | { | |
1442 | dout(4) << __func__ << " prefix='" << prefix << "'" << dendl; | |
1443 | op->mark_mdsmon_event(__func__); | |
1444 | int r = 0; | |
1445 | string whostr; | |
9f95a23c | 1446 | cmd_getval(cmdmap, "role", whostr); |
7c673cae | 1447 | |
11fdf7f2 | 1448 | if (prefix == "mds set_state") { |
7c673cae | 1449 | mds_gid_t gid; |
9f95a23c | 1450 | if (!cmd_getval(cmdmap, "gid", gid)) { |
7c673cae | 1451 | ss << "error parsing 'gid' value '" |
11fdf7f2 | 1452 | << cmd_vartype_stringify(cmdmap.at("gid")) << "'"; |
7c673cae FG |
1453 | return -EINVAL; |
1454 | } | |
1455 | MDSMap::DaemonState state; | |
9f95a23c | 1456 | if (!cmd_getval(cmdmap, "state", state)) { |
7c673cae | 1457 | ss << "error parsing 'state' string value '" |
11fdf7f2 | 1458 | << cmd_vartype_stringify(cmdmap.at("state")) << "'"; |
7c673cae FG |
1459 | return -EINVAL; |
1460 | } | |
f67539c2 | 1461 | if (fsmap.gid_exists(gid, op->get_session()->get_allowed_fs_names())) { |
11fdf7f2 TL |
1462 | fsmap.modify_daemon(gid, [state](auto& info) { |
1463 | info.state = state; | |
7c673cae FG |
1464 | }); |
1465 | ss << "set mds gid " << gid << " to state " << state << " " | |
1466 | << ceph_mds_state_name(state); | |
1467 | return 0; | |
1468 | } | |
1469 | } else if (prefix == "mds fail") { | |
1470 | string who; | |
9f95a23c | 1471 | cmd_getval(cmdmap, "role_or_gid", who); |
d2e6a577 FG |
1472 | |
1473 | MDSMap::mds_info_t failed_info; | |
f67539c2 TL |
1474 | mds_gid_t gid = gid_from_arg(fsmap, who, ss); |
1475 | if (gid == MDS_GID_NONE) { | |
1476 | ss << "MDS named '" << who << "' does not exist, is not up or you " | |
1477 | << "lack the permission to see."; | |
1478 | return 0; | |
1479 | } | |
1480 | if(!fsmap.gid_exists(gid, op->get_session()->get_allowed_fs_names())) { | |
1481 | ss << "MDS named '" << who << "' does not exist, is not up or you " | |
1482 | << "lack the permission to see."; | |
1483 | return -EINVAL; | |
1484 | } | |
1485 | string_view fs_name = fsmap.fs_name_from_gid(gid); | |
1486 | if (!op->get_session()->fs_name_capable(fs_name, MON_CAP_W)) { | |
1487 | ss << "Permission denied."; | |
1488 | return -EPERM; | |
1489 | } | |
1490 | ||
1adf2230 | 1491 | r = fail_mds(fsmap, ss, who, &failed_info); |
7c673cae | 1492 | if (r < 0 && r == -EAGAIN) { |
f67539c2 | 1493 | mon.osdmon()->wait_for_writeable(op, new C_RetryMessage(this, op)); |
7c673cae | 1494 | return -EAGAIN; // don't propose yet; wait for message to be retried |
d2e6a577 FG |
1495 | } else if (r == 0) { |
1496 | // Only log if we really did something (not when was already gone) | |
1497 | if (failed_info.global_id != MDS_GID_NONE) { | |
f67539c2 | 1498 | mon.clog->info() << failed_info.human_name() << " marked failed by " |
d2e6a577 FG |
1499 | << op->get_session()->entity_name; |
1500 | } | |
7c673cae FG |
1501 | } |
1502 | } else if (prefix == "mds rm") { | |
1503 | mds_gid_t gid; | |
9f95a23c | 1504 | if (!cmd_getval(cmdmap, "gid", gid)) { |
7c673cae | 1505 | ss << "error parsing 'gid' value '" |
11fdf7f2 | 1506 | << cmd_vartype_stringify(cmdmap.at("gid")) << "'"; |
7c673cae FG |
1507 | return -EINVAL; |
1508 | } | |
f67539c2 | 1509 | if (!fsmap.gid_exists(gid, op->get_session()->get_allowed_fs_names())) { |
11fdf7f2 | 1510 | ss << "mds gid " << gid << " does not exist"; |
f67539c2 TL |
1511 | return 0; |
1512 | } | |
1513 | string_view fs_name = fsmap.fs_name_from_gid(gid); | |
1514 | if (!op->get_session()->fs_name_capable(fs_name, MON_CAP_W)) { | |
1515 | ss << "Permission denied."; | |
1516 | return -EPERM; | |
1517 | } | |
1518 | const auto &info = fsmap.get_info_gid(gid); | |
1519 | MDSMap::DaemonState state = info.state; | |
1520 | if (state > 0) { | |
1521 | ss << "cannot remove active mds." << info.name | |
1522 | << " rank " << info.rank; | |
1523 | return -EBUSY; | |
7c673cae | 1524 | } else { |
f67539c2 TL |
1525 | fsmap.erase(gid, {}); |
1526 | ss << "removed mds gid " << gid; | |
1527 | return 0; | |
7c673cae FG |
1528 | } |
1529 | } else if (prefix == "mds rmfailed") { | |
11fdf7f2 | 1530 | bool confirm = false; |
9f95a23c | 1531 | cmd_getval(cmdmap, "yes_i_really_mean_it", confirm); |
11fdf7f2 | 1532 | if (!confirm) { |
7c673cae FG |
1533 | ss << "WARNING: this can make your filesystem inaccessible! " |
1534 | "Add --yes-i-really-mean-it if you are sure you wish to continue."; | |
1535 | return -EPERM; | |
1536 | } | |
1537 | ||
1538 | std::string role_str; | |
9f95a23c | 1539 | cmd_getval(cmdmap, "role", role_str); |
7c673cae | 1540 | mds_role_t role; |
f67539c2 TL |
1541 | const auto fs_names = op->get_session()->get_allowed_fs_names(); |
1542 | int r = fsmap.parse_role(role_str, &role, ss, fs_names); | |
7c673cae FG |
1543 | if (r < 0) { |
1544 | ss << "invalid role '" << role_str << "'"; | |
1545 | return -EINVAL; | |
1546 | } | |
f67539c2 TL |
1547 | string_view fs_name = fsmap.get_filesystem(role.fscid)->mds_map.get_fs_name(); |
1548 | if (!op->get_session()->fs_name_capable(fs_name, MON_CAP_W)) { | |
1549 | ss << "Permission denied."; | |
1550 | return -EPERM; | |
1551 | } | |
7c673cae | 1552 | |
1adf2230 | 1553 | fsmap.modify_filesystem( |
7c673cae FG |
1554 | role.fscid, |
1555 | [role](std::shared_ptr<Filesystem> fs) | |
1556 | { | |
1557 | fs->mds_map.failed.erase(role.rank); | |
1558 | }); | |
1559 | ||
1560 | ss << "removed failed mds." << role; | |
1561 | return 0; | |
522d829b | 1562 | /* TODO: convert to fs commands to update defaults */ |
7c673cae FG |
1563 | } else if (prefix == "mds compat rm_compat") { |
1564 | int64_t f; | |
9f95a23c | 1565 | if (!cmd_getval(cmdmap, "feature", f)) { |
7c673cae | 1566 | ss << "error parsing feature value '" |
11fdf7f2 | 1567 | << cmd_vartype_stringify(cmdmap.at("feature")) << "'"; |
7c673cae FG |
1568 | return -EINVAL; |
1569 | } | |
522d829b | 1570 | if (fsmap.default_compat.compat.contains(f)) { |
7c673cae | 1571 | ss << "removing compat feature " << f; |
522d829b | 1572 | fsmap.default_compat.compat.remove(f); |
7c673cae | 1573 | } else { |
522d829b | 1574 | ss << "compat feature " << f << " not present in " << fsmap.default_compat; |
7c673cae FG |
1575 | } |
1576 | r = 0; | |
1577 | } else if (prefix == "mds compat rm_incompat") { | |
1578 | int64_t f; | |
9f95a23c | 1579 | if (!cmd_getval(cmdmap, "feature", f)) { |
7c673cae | 1580 | ss << "error parsing feature value '" |
11fdf7f2 | 1581 | << cmd_vartype_stringify(cmdmap.at("feature")) << "'"; |
7c673cae FG |
1582 | return -EINVAL; |
1583 | } | |
522d829b | 1584 | if (fsmap.default_compat.incompat.contains(f)) { |
7c673cae | 1585 | ss << "removing incompat feature " << f; |
522d829b | 1586 | fsmap.default_compat.incompat.remove(f); |
7c673cae | 1587 | } else { |
522d829b | 1588 | ss << "incompat feature " << f << " not present in " << fsmap.default_compat; |
7c673cae FG |
1589 | } |
1590 | r = 0; | |
1591 | } else if (prefix == "mds repaired") { | |
1592 | std::string role_str; | |
9f95a23c | 1593 | cmd_getval(cmdmap, "role", role_str); |
7c673cae | 1594 | mds_role_t role; |
f67539c2 TL |
1595 | const auto fs_names = op->get_session()->get_allowed_fs_names(); |
1596 | r = fsmap.parse_role(role_str, &role, ss, fs_names); | |
7c673cae FG |
1597 | if (r < 0) { |
1598 | return r; | |
1599 | } | |
f67539c2 TL |
1600 | string_view fs_name = fsmap.get_filesystem(role.fscid)->mds_map.get_fs_name(); |
1601 | if (!op->get_session()->fs_name_capable(fs_name, MON_CAP_W)) { | |
1602 | ss << "Permission denied."; | |
1603 | return -EPERM; | |
1604 | } | |
7c673cae | 1605 | |
1adf2230 | 1606 | bool modified = fsmap.undamaged(role.fscid, role.rank); |
7c673cae | 1607 | if (modified) { |
494da23a | 1608 | ss << "repaired: restoring rank " << role; |
7c673cae | 1609 | } else { |
494da23a | 1610 | ss << "nothing to do: rank is not damaged"; |
7c673cae FG |
1611 | } |
1612 | ||
1613 | r = 0; | |
11fdf7f2 TL |
1614 | } else if (prefix == "mds freeze") { |
1615 | std::string who; | |
9f95a23c | 1616 | cmd_getval(cmdmap, "role_or_gid", who); |
11fdf7f2 TL |
1617 | mds_gid_t gid = gid_from_arg(fsmap, who, ss); |
1618 | if (gid == MDS_GID_NONE) { | |
7c673cae FG |
1619 | return -EINVAL; |
1620 | } | |
1621 | ||
f67539c2 TL |
1622 | string_view fs_name = fsmap.fs_name_from_gid(gid); |
1623 | if (!op->get_session()->fs_name_capable(fs_name, MON_CAP_W)) { | |
1624 | ss << "Permission denied."; | |
1625 | return -EPERM; | |
1626 | } | |
1627 | ||
11fdf7f2 | 1628 | bool freeze = false; |
7c673cae | 1629 | { |
11fdf7f2 | 1630 | std::string str; |
9f95a23c | 1631 | cmd_getval(cmdmap, "val", str); |
11fdf7f2 TL |
1632 | if ((r = parse_bool(str, &freeze, ss)) != 0) { |
1633 | return r; | |
1634 | } | |
1635 | } | |
7c673cae | 1636 | |
11fdf7f2 TL |
1637 | auto f = [freeze,gid,&ss](auto& info) { |
1638 | if (freeze) { | |
1639 | ss << "freezing mds." << gid; | |
1640 | info.freeze(); | |
1641 | } else { | |
1642 | ss << "unfreezing mds." << gid; | |
1643 | info.unfreeze(); | |
1644 | } | |
1645 | }; | |
1646 | fsmap.modify_daemon(gid, f); | |
7c673cae FG |
1647 | r = 0; |
1648 | } else { | |
1649 | return -ENOSYS; | |
1650 | } | |
1651 | ||
1652 | return r; | |
1653 | } | |
1654 | ||
7c673cae FG |
1655 | void MDSMonitor::check_subs() |
1656 | { | |
7c673cae FG |
1657 | // Subscriptions may be to "mdsmap" (MDS and legacy clients), |
1658 | // "mdsmap.<namespace>", or to "fsmap" for the full state of all | |
1659 | // filesystems. Build a list of all the types we service | |
1660 | // subscriptions for. | |
9f95a23c TL |
1661 | |
1662 | std::vector<std::string> types = { | |
1663 | "fsmap", | |
1664 | "fsmap.user", | |
1665 | "mdsmap", | |
1666 | }; | |
1667 | ||
28e407b8 AA |
1668 | for (const auto &p : get_fsmap().filesystems) { |
1669 | const auto &fscid = p.first; | |
9f95a23c TL |
1670 | CachedStackStringStream cos; |
1671 | *cos << "mdsmap." << fscid; | |
1672 | types.push_back(std::string(cos->strv())); | |
7c673cae FG |
1673 | } |
1674 | ||
1675 | for (const auto &type : types) { | |
f67539c2 | 1676 | auto& subs = mon.session_map.subs; |
9f95a23c TL |
1677 | auto subs_it = subs.find(type); |
1678 | if (subs_it == subs.end()) | |
7c673cae | 1679 | continue; |
9f95a23c TL |
1680 | auto sub_it = subs_it->second->begin(); |
1681 | while (!sub_it.end()) { | |
1682 | auto sub = *sub_it; | |
1683 | ++sub_it; // N.B. check_sub may remove sub! | |
7c673cae FG |
1684 | check_sub(sub); |
1685 | } | |
1686 | } | |
1687 | } | |
1688 | ||
1689 | ||
1690 | void MDSMonitor::check_sub(Subscription *sub) | |
1691 | { | |
1692 | dout(20) << __func__ << ": " << sub->type << dendl; | |
1693 | ||
f67539c2 TL |
1694 | // to use const qualifier filter fsmap beforehand |
1695 | FSMap _fsmap_copy = get_fsmap(); | |
1696 | _fsmap_copy.filter(sub->session->get_allowed_fs_names()); | |
1697 | const auto& fsmap = _fsmap_copy; | |
1698 | if (sub->next > fsmap.get_epoch()) { | |
1699 | return; | |
1700 | } | |
28e407b8 | 1701 | |
7c673cae | 1702 | if (sub->type == "fsmap") { |
f67539c2 TL |
1703 | sub->session->con->send_message(new MFSMap(mon.monmap->fsid, fsmap)); |
1704 | if (sub->onetime) { | |
1705 | mon.session_map.remove_sub(sub); | |
1706 | } else { | |
1707 | sub->next = fsmap.get_epoch() + 1; | |
7c673cae FG |
1708 | } |
1709 | } else if (sub->type == "fsmap.user") { | |
f67539c2 TL |
1710 | FSMapUser fsmap_u; |
1711 | fsmap_u.epoch = fsmap.get_epoch(); | |
1712 | fsmap_u.legacy_client_fscid = fsmap.legacy_client_fscid; | |
1713 | for (const auto &p : fsmap.filesystems) { | |
1714 | FSMapUser::fs_info_t& fs_info = fsmap_u.filesystems[p.second->fscid]; | |
1715 | fs_info.cid = p.second->fscid; | |
1716 | fs_info.name = p.second->mds_map.fs_name; | |
1717 | } | |
1718 | sub->session->con->send_message(new MFSMapUser(mon.monmap->fsid, fsmap_u)); | |
1719 | if (sub->onetime) { | |
1720 | mon.session_map.remove_sub(sub); | |
1721 | } else { | |
1722 | sub->next = fsmap.get_epoch() + 1; | |
7c673cae FG |
1723 | } |
1724 | } else if (sub->type.compare(0, 6, "mdsmap") == 0) { | |
11fdf7f2 | 1725 | const bool is_mds = sub->session->name.is_mds(); |
7c673cae FG |
1726 | mds_gid_t mds_gid = MDS_GID_NONE; |
1727 | fs_cluster_id_t fscid = FS_CLUSTER_ID_NONE; | |
1728 | if (is_mds) { | |
1729 | // What (if any) namespace are you assigned to? | |
1730 | auto mds_info = fsmap.get_mds_info(); | |
1adf2230 | 1731 | for (const auto &p : mds_info) { |
11fdf7f2 | 1732 | if (p.second.addrs == sub->session->addrs) { |
1adf2230 | 1733 | mds_gid = p.first; |
7c673cae FG |
1734 | fscid = fsmap.mds_roles.at(mds_gid); |
1735 | } | |
1736 | } | |
1737 | } else { | |
1738 | // You're a client. Did you request a particular | |
1739 | // namespace? | |
11fdf7f2 | 1740 | if (sub->type.compare(0, 7, "mdsmap.") == 0) { |
7c673cae FG |
1741 | auto namespace_id_str = sub->type.substr(std::string("mdsmap.").size()); |
1742 | dout(10) << __func__ << ": namespace_id " << namespace_id_str << dendl; | |
1743 | std::string err; | |
1744 | fscid = strict_strtoll(namespace_id_str.c_str(), 10, &err); | |
1745 | if (!err.empty()) { | |
1746 | // Client asked for a non-existent namespace, send them nothing | |
1747 | dout(1) << "Invalid client subscription '" << sub->type | |
1748 | << "'" << dendl; | |
1749 | return; | |
1750 | } | |
7c673cae FG |
1751 | } else { |
1752 | // Unqualified request for "mdsmap": give it the one marked | |
1753 | // for use by legacy clients. | |
1754 | if (fsmap.legacy_client_fscid != FS_CLUSTER_ID_NONE) { | |
1755 | fscid = fsmap.legacy_client_fscid; | |
1756 | } else { | |
1757 | dout(1) << "Client subscribed for legacy filesystem but " | |
1758 | "none is configured" << dendl; | |
1759 | return; | |
1760 | } | |
1761 | } | |
b3b6e05e TL |
1762 | if (!fsmap.filesystem_exists(fscid)) { |
1763 | // Client asked for a non-existent namespace, send them nothing | |
1764 | // TODO: something more graceful for when a client has a filesystem | |
1765 | // mounted, and the fileysstem is deleted. Add a "shut down you fool" | |
1766 | // flag to MMDSMap? | |
1767 | dout(1) << "Client subscribed to non-existent namespace '" << | |
1768 | fscid << "'" << dendl; | |
1769 | return; | |
1770 | } | |
7c673cae FG |
1771 | } |
1772 | dout(10) << __func__ << ": is_mds=" << is_mds << ", fscid= " << fscid << dendl; | |
1773 | ||
1774 | // Work out the effective latest epoch | |
28e407b8 | 1775 | const MDSMap *mds_map = nullptr; |
522d829b | 1776 | MDSMap null_map = MDSMap::create_null_mdsmap(); |
7c673cae FG |
1777 | if (fscid == FS_CLUSTER_ID_NONE) { |
1778 | // For a client, we should have already dropped out | |
11fdf7f2 | 1779 | ceph_assert(is_mds); |
7c673cae | 1780 | |
28e407b8 AA |
1781 | auto it = fsmap.standby_daemons.find(mds_gid); |
1782 | if (it != fsmap.standby_daemons.end()) { | |
7c673cae | 1783 | // For an MDS, we need to feed it an MDSMap with its own state in |
28e407b8 AA |
1784 | null_map.mds_info[mds_gid] = it->second; |
1785 | null_map.epoch = fsmap.standby_epochs.at(mds_gid); | |
7c673cae FG |
1786 | } else { |
1787 | null_map.epoch = fsmap.epoch; | |
1788 | } | |
1789 | mds_map = &null_map; | |
1790 | } else { | |
1791 | // Check the effective epoch | |
28e407b8 | 1792 | mds_map = &fsmap.get_filesystem(fscid)->mds_map; |
7c673cae FG |
1793 | } |
1794 | ||
11fdf7f2 | 1795 | ceph_assert(mds_map != nullptr); |
7c673cae FG |
1796 | dout(10) << __func__ << " selected MDS map epoch " << |
1797 | mds_map->epoch << " for namespace " << fscid << " for subscriber " | |
11fdf7f2 | 1798 | << sub->session->name << " who wants epoch " << sub->next << dendl; |
7c673cae FG |
1799 | |
1800 | if (sub->next > mds_map->epoch) { | |
1801 | return; | |
1802 | } | |
f67539c2 TL |
1803 | auto msg = make_message<MMDSMap>(mon.monmap->fsid, *mds_map, |
1804 | mds_map->fs_name); | |
7c673cae | 1805 | |
11fdf7f2 | 1806 | sub->session->con->send_message(msg.detach()); |
7c673cae | 1807 | if (sub->onetime) { |
f67539c2 | 1808 | mon.session_map.remove_sub(sub); |
7c673cae FG |
1809 | } else { |
1810 | sub->next = mds_map->get_epoch() + 1; | |
1811 | } | |
1812 | } | |
1813 | } | |
1814 | ||
1815 | ||
1816 | void MDSMonitor::update_metadata(mds_gid_t gid, | |
1817 | const map<string, string>& metadata) | |
1818 | { | |
1819 | if (metadata.empty()) { | |
1820 | return; | |
1821 | } | |
1822 | pending_metadata[gid] = metadata; | |
1823 | ||
f67539c2 | 1824 | MonitorDBStore::TransactionRef t = paxos.get_pending_transaction(); |
7c673cae | 1825 | bufferlist bl; |
11fdf7f2 | 1826 | encode(pending_metadata, bl); |
7c673cae | 1827 | t->put(MDS_METADATA_PREFIX, "last_metadata", bl); |
f67539c2 | 1828 | paxos.trigger_propose(); |
7c673cae FG |
1829 | } |
1830 | ||
1adf2230 | 1831 | void MDSMonitor::remove_from_metadata(const FSMap &fsmap, MonitorDBStore::TransactionRef t) |
7c673cae FG |
1832 | { |
1833 | bool update = false; | |
1adf2230 AA |
1834 | for (auto it = pending_metadata.begin(); it != pending_metadata.end(); ) { |
1835 | if (!fsmap.gid_exists(it->first)) { | |
1836 | it = pending_metadata.erase(it); | |
7c673cae FG |
1837 | update = true; |
1838 | } else { | |
1adf2230 | 1839 | ++it; |
7c673cae FG |
1840 | } |
1841 | } | |
1842 | if (!update) | |
1843 | return; | |
1844 | bufferlist bl; | |
11fdf7f2 | 1845 | encode(pending_metadata, bl); |
7c673cae FG |
1846 | t->put(MDS_METADATA_PREFIX, "last_metadata", bl); |
1847 | } | |
1848 | ||
1849 | int MDSMonitor::load_metadata(map<mds_gid_t, Metadata>& m) | |
1850 | { | |
1851 | bufferlist bl; | |
f67539c2 | 1852 | int r = mon.store->get(MDS_METADATA_PREFIX, "last_metadata", bl); |
7c673cae | 1853 | if (r) { |
11fdf7f2 | 1854 | dout(5) << "Unable to load 'last_metadata'" << dendl; |
7c673cae FG |
1855 | return r; |
1856 | } | |
1857 | ||
11fdf7f2 TL |
1858 | auto it = bl.cbegin(); |
1859 | ceph::decode(m, it); | |
7c673cae FG |
1860 | return 0; |
1861 | } | |
1862 | ||
1adf2230 | 1863 | void MDSMonitor::count_metadata(const std::string &field, map<string,int> *out) |
31f18b77 | 1864 | { |
31f18b77 FG |
1865 | map<mds_gid_t,Metadata> meta; |
1866 | load_metadata(meta); | |
1867 | for (auto& p : meta) { | |
1868 | auto q = p.second.find(field); | |
1869 | if (q == p.second.end()) { | |
c07f9fc5 | 1870 | (*out)["unknown"]++; |
31f18b77 | 1871 | } else { |
c07f9fc5 | 1872 | (*out)[q->second]++; |
31f18b77 FG |
1873 | } |
1874 | } | |
c07f9fc5 FG |
1875 | } |
1876 | ||
1adf2230 | 1877 | void MDSMonitor::count_metadata(const std::string &field, Formatter *f) |
c07f9fc5 FG |
1878 | { |
1879 | map<string,int> by_val; | |
1880 | count_metadata(field, &by_val); | |
31f18b77 FG |
1881 | f->open_object_section(field.c_str()); |
1882 | for (auto& p : by_val) { | |
1883 | f->dump_int(p.first.c_str(), p.second); | |
1884 | } | |
1885 | f->close_section(); | |
1886 | } | |
1887 | ||
f67539c2 TL |
1888 | void MDSMonitor::get_versions(std::map<string, list<string> > &versions) |
1889 | { | |
1890 | map<mds_gid_t,Metadata> meta; | |
1891 | load_metadata(meta); | |
1892 | const auto &fsmap = get_fsmap(); | |
1893 | std::map<mds_gid_t, mds_info_t> map = fsmap.get_mds_info(); | |
1894 | dout(10) << __func__ << " mds meta=" << meta << dendl; | |
1895 | for (auto& p : meta) { | |
1896 | auto q = p.second.find("ceph_version_short"); | |
1897 | if (q == p.second.end()) continue; | |
1898 | versions[q->second].push_back(string("mds.") + map[p.first].name); | |
1899 | } | |
1900 | } | |
1901 | ||
1adf2230 AA |
1902 | int MDSMonitor::dump_metadata(const FSMap& fsmap, const std::string &who, |
1903 | Formatter *f, ostream& err) | |
7c673cae | 1904 | { |
11fdf7f2 | 1905 | ceph_assert(f); |
7c673cae | 1906 | |
1adf2230 | 1907 | mds_gid_t gid = gid_from_arg(fsmap, who, err); |
7c673cae FG |
1908 | if (gid == MDS_GID_NONE) { |
1909 | return -EINVAL; | |
1910 | } | |
1911 | ||
1912 | map<mds_gid_t, Metadata> metadata; | |
1913 | if (int r = load_metadata(metadata)) { | |
1914 | err << "Unable to load 'last_metadata'"; | |
1915 | return r; | |
1916 | } | |
1917 | ||
1918 | if (!metadata.count(gid)) { | |
1919 | return -ENOENT; | |
1920 | } | |
1921 | const Metadata& m = metadata[gid]; | |
1922 | for (Metadata::const_iterator p = m.begin(); p != m.end(); ++p) { | |
1923 | f->dump_string(p->first.c_str(), p->second); | |
1924 | } | |
1925 | return 0; | |
1926 | } | |
1927 | ||
1928 | int MDSMonitor::print_nodes(Formatter *f) | |
1929 | { | |
11fdf7f2 | 1930 | ceph_assert(f); |
7c673cae | 1931 | |
1adf2230 AA |
1932 | const auto &fsmap = get_fsmap(); |
1933 | ||
7c673cae FG |
1934 | map<mds_gid_t, Metadata> metadata; |
1935 | if (int r = load_metadata(metadata)) { | |
1936 | return r; | |
1937 | } | |
1938 | ||
11fdf7f2 | 1939 | map<string, list<string> > mdses; // hostname => mds |
1adf2230 AA |
1940 | for (const auto &p : metadata) { |
1941 | const mds_gid_t& gid = p.first; | |
1942 | const Metadata& m = p.second; | |
7c673cae FG |
1943 | Metadata::const_iterator hostname = m.find("hostname"); |
1944 | if (hostname == m.end()) { | |
1945 | // not likely though | |
1946 | continue; | |
1947 | } | |
1adf2230 | 1948 | if (!fsmap.gid_exists(gid)) { |
7c673cae FG |
1949 | dout(5) << __func__ << ": GID " << gid << " not existent" << dendl; |
1950 | continue; | |
1951 | } | |
1adf2230 | 1952 | const MDSMap::mds_info_t& mds_info = fsmap.get_info_gid(gid); |
11fdf7f2 | 1953 | mdses[hostname->second].push_back(mds_info.name); |
7c673cae FG |
1954 | } |
1955 | ||
1956 | dump_services(f, mdses, "mds"); | |
1957 | return 0; | |
1958 | } | |
1959 | ||
1960 | /** | |
1961 | * If a cluster is undersized (with respect to max_mds), then | |
11fdf7f2 TL |
1962 | * attempt to find daemons to grow it. If the cluster is oversized |
1963 | * (with respect to max_mds) then shrink it by stopping its highest rank. | |
7c673cae | 1964 | */ |
11fdf7f2 | 1965 | bool MDSMonitor::maybe_resize_cluster(FSMap &fsmap, fs_cluster_id_t fscid) |
7c673cae | 1966 | { |
11fdf7f2 TL |
1967 | auto ¤t_mds_map = get_fsmap().get_filesystem(fscid)->mds_map; |
1968 | auto&& fs = fsmap.get_filesystem(fscid); | |
1adf2230 | 1969 | auto &mds_map = fs->mds_map; |
7c673cae | 1970 | |
1adf2230 AA |
1971 | int in = mds_map.get_num_in_mds(); |
1972 | int max = mds_map.get_max_mds(); | |
1973 | ||
1974 | dout(20) << __func__ << " in " << in << " max " << max << dendl; | |
1975 | ||
11fdf7f2 TL |
1976 | /* Check that both the current epoch mds_map is resizeable as well as the |
1977 | * current batch of changes in pending. This is important if an MDS is | |
1978 | * becoming active in the next epoch. | |
1979 | */ | |
1980 | if (!current_mds_map.is_resizeable() || | |
1981 | !mds_map.is_resizeable()) { | |
1982 | dout(5) << __func__ << " mds_map is not currently resizeable" << dendl; | |
1983 | return false; | |
1984 | } | |
1985 | ||
1986 | if (in < max && !mds_map.test_flag(CEPH_MDSMAP_NOT_JOINABLE)) { | |
7c673cae | 1987 | mds_rank_t mds = mds_rank_t(0); |
1adf2230 | 1988 | while (mds_map.is_in(mds)) { |
7c673cae FG |
1989 | mds++; |
1990 | } | |
9f95a23c TL |
1991 | auto info = fsmap.find_replacement_for({fscid, mds}); |
1992 | if (!info) { | |
1adf2230 | 1993 | return false; |
7c673cae FG |
1994 | } |
1995 | ||
9f95a23c | 1996 | dout(1) << "assigned standby " << info->addrs |
7c673cae | 1997 | << " as mds." << mds << dendl; |
f67539c2 | 1998 | mon.clog->info() << info->human_name() << " assigned to " |
1adf2230 AA |
1999 | "filesystem " << mds_map.fs_name << " as rank " |
2000 | << mds << " (now has " << mds_map.get_num_in_mds() + 1 | |
d2e6a577 | 2001 | << " ranks)"; |
9f95a23c | 2002 | fsmap.promote(info->global_id, *fs, mds); |
1adf2230 | 2003 | return true; |
11fdf7f2 TL |
2004 | } else if (in > max) { |
2005 | mds_rank_t target = in - 1; | |
2006 | const auto &info = mds_map.get_info(target); | |
2007 | if (mds_map.is_active(target)) { | |
2008 | dout(1) << "stopping " << target << dendl; | |
f67539c2 | 2009 | mon.clog->info() << "stopping " << info.human_name(); |
11fdf7f2 TL |
2010 | auto f = [](auto& info) { |
2011 | info.state = MDSMap::STATE_STOPPING; | |
2012 | }; | |
2013 | fsmap.modify_daemon(info.global_id, f); | |
2014 | return true; | |
2015 | } else { | |
2016 | dout(20) << "skipping stop of " << target << dendl; | |
2017 | return false; | |
2018 | } | |
7c673cae FG |
2019 | } |
2020 | ||
1adf2230 | 2021 | return false; |
7c673cae FG |
2022 | } |
2023 | ||
2024 | ||
2025 | /** | |
9f95a23c | 2026 | * Fail a daemon and replace it with a suitable standby. |
7c673cae | 2027 | */ |
9f95a23c | 2028 | bool MDSMonitor::drop_mds(FSMap &fsmap, mds_gid_t gid, const mds_info_t* rep_info, bool *osd_propose) |
7c673cae | 2029 | { |
11fdf7f2 | 2030 | ceph_assert(osd_propose != nullptr); |
7c673cae | 2031 | |
1adf2230 | 2032 | const auto fscid = fsmap.mds_roles.at(gid); |
9f95a23c TL |
2033 | const auto& info = fsmap.get_info_gid(gid); |
2034 | const auto rank = info.rank; | |
2035 | const auto state = info.state; | |
2036 | ||
2037 | if (info.is_frozen()) { | |
2038 | return false; | |
2039 | } else if (state == MDSMap::STATE_STANDBY_REPLAY || | |
2040 | state == MDSMap::STATE_STANDBY) { | |
2041 | dout(1) << " failing and removing standby " << gid << " " << info.addrs | |
2042 | << " mds." << rank | |
2043 | << "." << info.inc << " " << ceph_mds_state_name(state) | |
2044 | << dendl; | |
2045 | *osd_propose |= fail_mds_gid(fsmap, gid); | |
2046 | return true; | |
2047 | } else if (rank >= 0 && rep_info) { | |
2048 | auto fs = fsmap.filesystems.at(fscid); | |
2049 | if (fs->mds_map.test_flag(CEPH_MDSMAP_NOT_JOINABLE)) { | |
2050 | return false; | |
2051 | } | |
2052 | // are we in? | |
2053 | // and is there a non-laggy standby that can take over for us? | |
2054 | dout(1) << " replacing " << gid << " " << info.addrs | |
2055 | << " mds." << rank << "." << info.inc | |
2056 | << " " << ceph_mds_state_name(state) | |
2057 | << " with " << rep_info->global_id << "/" << rep_info->name << " " << rep_info->addrs | |
2058 | << dendl; | |
2059 | ||
f67539c2 | 2060 | mon.clog->warn() << "Replacing " << info.human_name() |
9f95a23c TL |
2061 | << " as rank " << rank |
2062 | << " with standby " << rep_info->human_name(); | |
2063 | ||
2064 | // Remove the old one | |
2065 | *osd_propose |= fail_mds_gid(fsmap, gid); | |
2066 | ||
2067 | // Promote the replacement | |
2068 | fsmap.promote(rep_info->global_id, *fs, rank); | |
2069 | ||
2070 | return true; | |
2071 | } | |
2072 | return false; | |
2073 | } | |
2074 | ||
2075 | bool MDSMonitor::check_health(FSMap& fsmap, bool* propose_osdmap) | |
2076 | { | |
2077 | bool do_propose = false; | |
2078 | const auto now = mono_clock::now(); | |
f67539c2 | 2079 | const bool osdmap_writeable = mon.osdmon()->is_writeable(); |
9f95a23c TL |
2080 | const auto mds_beacon_grace = g_conf().get_val<double>("mds_beacon_grace"); |
2081 | const auto mds_beacon_interval = g_conf().get_val<double>("mds_beacon_interval"); | |
2082 | ||
2083 | if (mono_clock::is_zero(last_tick)) { | |
2084 | last_tick = now; | |
2085 | } | |
2086 | ||
2087 | { | |
2088 | auto since_last = std::chrono::duration<double>(now-last_tick); | |
2089 | ||
2090 | if (since_last.count() > (mds_beacon_grace-mds_beacon_interval)) { | |
2091 | // This case handles either local slowness (calls being delayed | |
2092 | // for whatever reason) or cluster election slowness (a long gap | |
2093 | // between calls while an election happened) | |
2094 | dout(1) << __func__ << ": resetting beacon timeouts due to mon delay " | |
2095 | "(slow election?) of " << since_last.count() << " seconds" << dendl; | |
2096 | for (auto& p : last_beacon) { | |
2097 | p.second.stamp = now; | |
2098 | } | |
2099 | } | |
2100 | } | |
2101 | ||
2102 | // make sure last_beacon is fully populated | |
2103 | for (auto& p : fsmap.mds_roles) { | |
2104 | auto& gid = p.first; | |
2105 | last_beacon.emplace(std::piecewise_construct, | |
2106 | std::forward_as_tuple(gid), | |
2107 | std::forward_as_tuple(now, 0)); | |
2108 | } | |
7c673cae | 2109 | |
31f18b77 | 2110 | // We will only take decisive action (replacing/removing a daemon) |
9f95a23c | 2111 | // if we have some indication that some other daemon(s) are successfully |
31f18b77 | 2112 | // getting beacons through recently. |
1adf2230 | 2113 | mono_time latest_beacon = mono_clock::zero(); |
9f95a23c | 2114 | for (const auto& p : last_beacon) { |
1adf2230 | 2115 | latest_beacon = std::max(p.second.stamp, latest_beacon); |
31f18b77 | 2116 | } |
f67539c2 | 2117 | auto since = std::chrono::duration<double>(now-latest_beacon); |
1adf2230 | 2118 | const bool may_replace = since.count() < |
11fdf7f2 | 2119 | std::max(g_conf()->mds_beacon_interval, g_conf()->mds_beacon_grace * 0.5); |
31f18b77 | 2120 | |
9f95a23c TL |
2121 | // check beacon timestamps |
2122 | std::vector<mds_gid_t> to_remove; | |
2123 | for (auto it = last_beacon.begin(); it != last_beacon.end(); ) { | |
2124 | auto& [gid, beacon_info] = *it; | |
f67539c2 | 2125 | auto since_last = std::chrono::duration<double>(now-beacon_info.stamp); |
9f95a23c TL |
2126 | |
2127 | if (!fsmap.gid_exists(gid)) { | |
2128 | // gid no longer exists, remove from tracked beacons | |
2129 | it = last_beacon.erase(it); | |
2130 | continue; | |
2131 | } | |
7c673cae | 2132 | |
9f95a23c TL |
2133 | if (since_last.count() >= g_conf()->mds_beacon_grace) { |
2134 | auto& info = fsmap.get_info_gid(gid); | |
2135 | dout(1) << "no beacon from mds." << info.rank << "." << info.inc | |
2136 | << " (gid: " << gid << " addr: " << info.addrs | |
2137 | << " state: " << ceph_mds_state_name(info.state) << ")" | |
2138 | << " since " << since_last.count() << dendl; | |
f67539c2 | 2139 | // If the OSDMap is writeable, we can blocklist things, so we can |
9f95a23c TL |
2140 | // try failing any laggy MDS daemons. Consider each one for failure. |
2141 | if (!info.laggy()) { | |
2142 | dout(1) << " marking " << gid << " " << info.addrs | |
2143 | << " mds." << info.rank << "." << info.inc | |
2144 | << " " << ceph_mds_state_name(info.state) | |
2145 | << " laggy" << dendl; | |
2146 | fsmap.modify_daemon(info.global_id, [](auto& info) { | |
2147 | info.laggy_since = ceph_clock_now(); | |
2148 | }); | |
2149 | do_propose = true; | |
2150 | } | |
2151 | if (osdmap_writeable && may_replace) { | |
2152 | to_remove.push_back(gid); // drop_mds may invalidate iterator | |
2153 | } | |
2154 | } | |
31f18b77 | 2155 | |
9f95a23c TL |
2156 | ++it; |
2157 | } | |
7c673cae | 2158 | |
9f95a23c | 2159 | for (const auto& gid : to_remove) { |
f6b5b4d7 | 2160 | auto info = fsmap.get_info_gid(gid); |
9f95a23c TL |
2161 | const mds_info_t* rep_info = nullptr; |
2162 | if (info.rank >= 0) { | |
f67539c2 | 2163 | auto fscid = fsmap.fscid_from_gid(gid); |
9f95a23c TL |
2164 | rep_info = fsmap.find_replacement_for({fscid, info.rank}); |
2165 | } | |
2166 | bool dropped = drop_mds(fsmap, gid, rep_info, propose_osdmap); | |
2167 | if (dropped) { | |
f67539c2 | 2168 | mon.clog->info() << "MDS " << info.human_name() |
9f95a23c TL |
2169 | << " is removed because it is dead or otherwise unavailable."; |
2170 | do_propose = true; | |
2171 | } | |
2172 | } | |
7c673cae | 2173 | |
9f95a23c TL |
2174 | if (osdmap_writeable) { |
2175 | for (auto& [fscid, fs] : fsmap.filesystems) { | |
2176 | if (!fs->mds_map.test_flag(CEPH_MDSMAP_NOT_JOINABLE) && | |
2177 | fs->mds_map.is_resizeable()) { | |
2178 | // Check if a rank or standby-replay should be replaced with a stronger | |
2179 | // affinity standby. This looks at ranks and standby-replay: | |
2180 | for (const auto& [gid, info] : fs->mds_map.get_mds_info()) { | |
2181 | const auto join_fscid = info.join_fscid; | |
2182 | if (join_fscid == fscid) | |
2183 | continue; | |
2184 | const auto rank = info.rank; | |
2185 | const auto state = info.state; | |
2186 | const mds_info_t* rep_info = nullptr; | |
2187 | if (state == MDSMap::STATE_STANDBY_REPLAY) { | |
522d829b | 2188 | rep_info = fsmap.get_available_standby(*fs); |
9f95a23c TL |
2189 | } else if (state == MDSMap::STATE_ACTIVE) { |
2190 | rep_info = fsmap.find_replacement_for({fscid, rank}); | |
2191 | } else { | |
2192 | /* N.B. !is_degraded() */ | |
2193 | ceph_abort_msg("invalid state in MDSMap"); | |
2194 | } | |
2195 | if (!rep_info) { | |
2196 | break; | |
2197 | } | |
2198 | bool better_affinity = false; | |
2199 | if (join_fscid == FS_CLUSTER_ID_NONE) { | |
2200 | better_affinity = (rep_info->join_fscid == fscid); | |
2201 | } else { | |
2202 | better_affinity = (rep_info->join_fscid == fscid) || | |
2203 | (rep_info->join_fscid == FS_CLUSTER_ID_NONE); | |
2204 | } | |
2205 | if (better_affinity) { | |
2206 | if (state == MDSMap::STATE_STANDBY_REPLAY) { | |
f67539c2 | 2207 | mon.clog->info() << "Dropping low affinity standby-replay " |
9f95a23c TL |
2208 | << info.human_name() |
2209 | << " in favor of higher affinity standby."; | |
2210 | *propose_osdmap |= fail_mds_gid(fsmap, gid); | |
2211 | /* Now let maybe_promote_standby do the promotion. */ | |
2212 | } else { | |
f67539c2 | 2213 | mon.clog->info() << "Dropping low affinity active " |
9f95a23c TL |
2214 | << info.human_name() |
2215 | << " in favor of higher affinity standby."; | |
2216 | do_propose |= drop_mds(fsmap, gid, rep_info, propose_osdmap); | |
2217 | } | |
2218 | break; /* don't replace more than one per tick per fs */ | |
2219 | } | |
2220 | } | |
2221 | } | |
2222 | } | |
7c673cae | 2223 | } |
9f95a23c | 2224 | return do_propose; |
7c673cae FG |
2225 | } |
2226 | ||
11fdf7f2 | 2227 | bool MDSMonitor::maybe_promote_standby(FSMap &fsmap, Filesystem& fs) |
7c673cae | 2228 | { |
11fdf7f2 TL |
2229 | if (fs.mds_map.test_flag(CEPH_MDSMAP_NOT_JOINABLE)) { |
2230 | return false; | |
2231 | } | |
7c673cae FG |
2232 | |
2233 | bool do_propose = false; | |
2234 | ||
2235 | // have a standby take over? | |
2236 | set<mds_rank_t> failed; | |
11fdf7f2 TL |
2237 | fs.mds_map.get_failed_mds_set(failed); |
2238 | for (const auto& rank : failed) { | |
9f95a23c TL |
2239 | auto info = fsmap.find_replacement_for({fs.fscid, rank}); |
2240 | if (info) { | |
2241 | dout(1) << " taking over failed mds." << rank << " with " << info->global_id | |
2242 | << "/" << info->name << " " << info->addrs << dendl; | |
f67539c2 | 2243 | mon.clog->info() << "Standby " << info->human_name() |
11fdf7f2 TL |
2244 | << " assigned to filesystem " << fs.mds_map.fs_name |
2245 | << " as rank " << rank; | |
2246 | ||
9f95a23c | 2247 | fsmap.promote(info->global_id, fs, rank); |
11fdf7f2 | 2248 | do_propose = true; |
7c673cae | 2249 | } |
11fdf7f2 TL |
2250 | } |
2251 | ||
f67539c2 | 2252 | if (fs.mds_map.is_resizeable() && fs.mds_map.allows_standby_replay()) { |
7c673cae | 2253 | // There were no failures to replace, so try using any available standbys |
a8e16298 TL |
2254 | // as standby-replay daemons. Don't do this when the cluster is degraded |
2255 | // as a standby-replay daemon may try to read a journal being migrated. | |
11fdf7f2 | 2256 | for (;;) { |
522d829b | 2257 | auto info = fsmap.get_available_standby(fs); |
9f95a23c TL |
2258 | if (!info) break; |
2259 | dout(20) << "standby available mds." << info->global_id << dendl; | |
11fdf7f2 TL |
2260 | bool changed = false; |
2261 | for (const auto& rank : fs.mds_map.in) { | |
9f95a23c | 2262 | dout(20) << "examining " << rank << dendl; |
11fdf7f2 | 2263 | if (fs.mds_map.is_followable(rank)) { |
9f95a23c | 2264 | dout(1) << " setting mds." << info->global_id |
11fdf7f2 | 2265 | << " to follow mds rank " << rank << dendl; |
9f95a23c | 2266 | fsmap.assign_standby_replay(info->global_id, fs.fscid, rank); |
11fdf7f2 TL |
2267 | do_propose = true; |
2268 | changed = true; | |
2269 | break; | |
7c673cae | 2270 | } |
7c673cae | 2271 | } |
11fdf7f2 | 2272 | if (!changed) break; |
7c673cae FG |
2273 | } |
2274 | } | |
2275 | ||
2276 | return do_propose; | |
2277 | } | |
2278 | ||
2279 | void MDSMonitor::tick() | |
2280 | { | |
1adf2230 | 2281 | if (!is_active() || !is_leader()) return; |
28e407b8 AA |
2282 | |
2283 | auto &pending = get_pending_fsmap_writeable(); | |
7c673cae | 2284 | |
28e407b8 | 2285 | bool do_propose = false; |
9f95a23c | 2286 | bool propose_osdmap = false; |
7c673cae | 2287 | |
522d829b TL |
2288 | if (check_fsmap_struct_version) { |
2289 | /* Allow time for trimming otherwise PaxosService::is_writeable will always | |
2290 | * be false. | |
2291 | */ | |
2292 | ||
2293 | auto now = clock::now(); | |
2294 | auto elapsed = now - last_fsmap_struct_flush; | |
2295 | if (elapsed > std::chrono::seconds(30)) { | |
2296 | FSMap fsmap; | |
2297 | bufferlist bl; | |
2298 | auto v = get_first_committed(); | |
2299 | int err = get_version(v, bl); | |
2300 | if (err) { | |
2301 | derr << "could not get version " << v << dendl; | |
2302 | ceph_abort(); | |
2303 | } | |
2304 | fsmap.decode(bl); | |
2305 | if (fsmap.is_struct_old()) { | |
2306 | dout(5) << "fsmap struct is too old; proposing to flush out old versions" << dendl; | |
2307 | do_propose = true; | |
2308 | last_fsmap_struct_flush = now; | |
2309 | } else { | |
2310 | dout(20) << "struct is recent" << dendl; | |
2311 | check_fsmap_struct_version = false; | |
2312 | } | |
2313 | } | |
2314 | } | |
2315 | ||
28e407b8 | 2316 | do_propose |= pending.check_health(); |
7c673cae | 2317 | |
9f95a23c TL |
2318 | /* Check health and affinity of ranks */ |
2319 | do_propose |= check_health(pending, &propose_osdmap); | |
7c673cae | 2320 | |
9f95a23c TL |
2321 | /* Resize the cluster according to max_mds. */ |
2322 | for (auto& p : pending.filesystems) { | |
2323 | do_propose |= maybe_resize_cluster(pending, p.second->fscid); | |
7c673cae FG |
2324 | } |
2325 | ||
9f95a23c TL |
2326 | /* Replace any failed ranks. */ |
2327 | for (auto& p : pending.filesystems) { | |
2328 | do_propose |= maybe_promote_standby(pending, *p.second); | |
7c673cae FG |
2329 | } |
2330 | ||
c07f9fc5 | 2331 | if (propose_osdmap) { |
f67539c2 | 2332 | request_proposal(mon.osdmon()); |
c07f9fc5 | 2333 | } |
7c673cae | 2334 | |
7c673cae FG |
2335 | if (do_propose) { |
2336 | propose_pending(); | |
2337 | } | |
9f95a23c TL |
2338 | |
2339 | last_tick = mono_clock::now(); | |
7c673cae FG |
2340 | } |
2341 | ||
f67539c2 | 2342 | MDSMonitor::MDSMonitor(Monitor &mn, Paxos &p, string service_name) |
7c673cae FG |
2343 | : PaxosService(mn, p, service_name) |
2344 | { | |
f67539c2 | 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 |