1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 * Ceph - scalable distributed file system
6 * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
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.
16 #include <boost/utility.hpp>
17 #include <boost/regex.hpp>
19 #include "MDSMonitor.h"
20 #include "FSCommands.h"
22 #include "MonitorDBStore.h"
23 #include "OSDMonitor.h"
24 #include "PGMonitor.h"
26 #include "common/strtol.h"
27 #include "common/perf_counters.h"
28 #include "common/config.h"
29 #include "common/cmdparse.h"
30 #include "messages/MMDSMap.h"
31 #include "messages/MFSMap.h"
32 #include "messages/MFSMapUser.h"
33 #include "messages/MMDSLoadTargets.h"
34 #include "messages/MMonCommand.h"
35 #include "messages/MGenericMessage.h"
37 #include "include/assert.h"
38 #include "include/str_list.h"
39 #include "include/stringify.h"
40 #include "mds/mdstypes.h"
43 #define dout_subsys ceph_subsys_mon
45 #define dout_prefix _prefix(_dout, mon, fsmap)
46 static ostream
& _prefix(std::ostream
*_dout
, Monitor
*mon
, FSMap
const& fsmap
) {
47 return *_dout
<< "mon." << mon
->name
<< "@" << mon
->rank
48 << "(" << mon
->get_state_name()
49 << ").mds e" << fsmap
.get_epoch() << " ";
53 * Specialized implementation of cmd_getval to allow us to parse
54 * out strongly-typedef'd types
56 template<> bool cmd_getval(CephContext
*cct
, const cmdmap_t
& cmdmap
,
57 const std::string
& k
, mds_gid_t
&val
)
59 return cmd_getval(cct
, cmdmap
, k
, (int64_t&)val
);
62 template<> bool cmd_getval(CephContext
*cct
, const cmdmap_t
& cmdmap
,
63 const std::string
& k
, mds_rank_t
&val
)
65 return cmd_getval(cct
, cmdmap
, k
, (int64_t&)val
);
68 template<> bool cmd_getval(CephContext
*cct
, const cmdmap_t
& cmdmap
,
69 const std::string
& k
, MDSMap::DaemonState
&val
)
71 return cmd_getval(cct
, cmdmap
, k
, (int64_t&)val
);
74 static const string
MDS_METADATA_PREFIX("mds_metadata");
79 void MDSMonitor::print_map(FSMap
&m
, int dbl
)
81 dout(dbl
) << "print_map\n";
87 void MDSMonitor::create_initial()
89 dout(10) << "create_initial" << dendl
;
93 void MDSMonitor::update_from_paxos(bool *need_bootstrap
)
95 version_t version
= get_last_committed();
96 if (version
== fsmap
.epoch
)
99 dout(10) << __func__
<< " version " << version
100 << ", my e " << fsmap
.epoch
<< dendl
;
101 assert(version
> fsmap
.epoch
);
108 int err
= get_version(version
, fsmap_bl
);
111 assert(fsmap_bl
.length() > 0);
112 dout(10) << __func__
<< " got " << version
<< dendl
;
113 fsmap
.decode(fsmap_bl
);
116 dout(4) << "new map" << dendl
;
118 if (!g_conf
->mon_mds_skip_sanity
) {
126 void MDSMonitor::init()
128 (void)load_metadata(pending_metadata
);
131 void MDSMonitor::create_pending()
133 pending_fsmap
= fsmap
;
134 pending_fsmap
.epoch
++;
136 dout(10) << "create_pending e" << pending_fsmap
.epoch
<< dendl
;
139 void MDSMonitor::encode_pending(MonitorDBStore::TransactionRef t
)
141 dout(10) << "encode_pending e" << pending_fsmap
.epoch
<< dendl
;
144 // print map iff 'debug mon = 30' or higher
145 print_map(pending_fsmap
, 30);
146 if (!g_conf
->mon_mds_skip_sanity
) {
147 pending_fsmap
.sanity();
150 // Set 'modified' on maps modified this epoch
151 for (auto &i
: fsmap
.filesystems
) {
152 if (i
.second
->mds_map
.epoch
== fsmap
.epoch
) {
153 i
.second
->mds_map
.modified
= ceph_clock_now();
158 assert(get_last_committed() + 1 == pending_fsmap
.epoch
);
160 pending_fsmap
.encode(fsmap_bl
, mon
->get_quorum_con_features());
162 /* put everything in the transaction */
163 put_version(t
, pending_fsmap
.epoch
, fsmap_bl
);
164 put_last_committed(t
, pending_fsmap
.epoch
);
166 // Encode MDSHealth data
167 for (std::map
<uint64_t, MDSHealth
>::iterator i
= pending_daemon_health
.begin();
168 i
!= pending_daemon_health
.end(); ++i
) {
170 i
->second
.encode(bl
);
171 t
->put(MDS_HEALTH_PREFIX
, stringify(i
->first
), bl
);
174 for (std::set
<uint64_t>::iterator i
= pending_daemon_health_rm
.begin();
175 i
!= pending_daemon_health_rm
.end(); ++i
) {
176 t
->erase(MDS_HEALTH_PREFIX
, stringify(*i
));
178 pending_daemon_health_rm
.clear();
179 remove_from_metadata(t
);
182 health_check_map_t new_checks
;
183 const auto info_map
= pending_fsmap
.get_mds_info();
184 for (const auto &i
: info_map
) {
185 const auto &gid
= i
.first
;
186 const auto &info
= i
.second
;
187 if (pending_daemon_health_rm
.count(gid
)) {
191 auto p
= pending_daemon_health
.find(gid
);
192 if (p
!= pending_daemon_health
.end()) {
196 mon
->store
->get(MDS_HEALTH_PREFIX
, stringify(gid
), bl
);
198 derr
<< "Missing health data for MDS " << gid
<< dendl
;
201 bufferlist::iterator bl_i
= bl
.begin();
204 for (const auto &metric
: health
.metrics
) {
205 const int rank
= info
.rank
;
206 health_check_t
*check
= &new_checks
.get_or_add(
207 mds_metric_name(metric
.type
),
209 mds_metric_summary(metric
.type
));
211 ss
<< "mds" << info
.name
<< "(mds." << rank
<< "): " << metric
.message
;
212 for (auto p
= metric
.metadata
.begin();
213 p
!= metric
.metadata
.end();
215 if (p
!= metric
.metadata
.begin()) {
218 ss
<< p
->first
<< ": " << p
->second
;
220 check
->detail
.push_back(ss
.str());
223 pending_fsmap
.get_health_checks(&new_checks
);
224 for (auto& p
: new_checks
.checks
) {
225 p
.second
.summary
= boost::regex_replace(
227 boost::regex("%num%"),
228 stringify(p
.second
.detail
.size()));
229 p
.second
.summary
= boost::regex_replace(
231 boost::regex("%plurals%"),
232 p
.second
.detail
.size() > 1 ? "s" : "");
233 p
.second
.summary
= boost::regex_replace(
235 boost::regex("%isorare%"),
236 p
.second
.detail
.size() > 1 ? "are" : "is");
237 p
.second
.summary
= boost::regex_replace(
239 boost::regex("%hasorhave%"),
240 p
.second
.detail
.size() > 1 ? "have" : "has");
242 encode_health(new_checks
, t
);
245 version_t
MDSMonitor::get_trim_to()
248 if (g_conf
->mon_mds_force_trim_to
> 0 &&
249 g_conf
->mon_mds_force_trim_to
< (int)get_last_committed()) {
250 floor
= g_conf
->mon_mds_force_trim_to
;
251 dout(10) << __func__
<< " explicit mon_mds_force_trim_to = "
255 unsigned max
= g_conf
->mon_max_mdsmap_epochs
;
256 version_t last
= get_last_committed();
258 if (last
- get_first_committed() > max
&& floor
< last
- max
)
263 void MDSMonitor::update_logger()
265 dout(10) << "update_logger" << dendl
;
270 for (const auto &i
: fsmap
.filesystems
) {
271 const MDSMap
&mds_map
= i
.second
->mds_map
;
273 up
+= mds_map
.get_num_up_mds();
274 in
+= mds_map
.get_num_in_mds();
275 failed
+= mds_map
.get_num_failed_mds();
277 mon
->cluster_logger
->set(l_cluster_num_mds_up
, up
);
278 mon
->cluster_logger
->set(l_cluster_num_mds_in
, in
);
279 mon
->cluster_logger
->set(l_cluster_num_mds_failed
, failed
);
280 mon
->cluster_logger
->set(l_cluster_mds_epoch
, fsmap
.get_epoch());
283 bool MDSMonitor::preprocess_query(MonOpRequestRef op
)
285 op
->mark_mdsmon_event(__func__
);
286 PaxosServiceMessage
*m
= static_cast<PaxosServiceMessage
*>(op
->get_req());
287 dout(10) << "preprocess_query " << *m
<< " from " << m
->get_orig_source_inst() << dendl
;
289 switch (m
->get_type()) {
292 return preprocess_beacon(op
);
294 case MSG_MON_COMMAND
:
295 return preprocess_command(op
);
297 case MSG_MDS_OFFLOAD_TARGETS
:
298 return preprocess_offload_targets(op
);
306 void MDSMonitor::_note_beacon(MMDSBeacon
*m
)
308 mds_gid_t gid
= mds_gid_t(m
->get_global_id());
309 version_t seq
= m
->get_seq();
311 dout(15) << "_note_beacon " << *m
<< " noting time" << dendl
;
312 last_beacon
[gid
].stamp
= ceph_clock_now();
313 last_beacon
[gid
].seq
= seq
;
316 bool MDSMonitor::preprocess_beacon(MonOpRequestRef op
)
318 op
->mark_mdsmon_event(__func__
);
319 MMDSBeacon
*m
= static_cast<MMDSBeacon
*>(op
->get_req());
320 MDSMap::DaemonState state
= m
->get_state();
321 mds_gid_t gid
= m
->get_global_id();
322 version_t seq
= m
->get_seq();
323 MDSMap::mds_info_t info
;
324 epoch_t effective_epoch
= 0;
326 // check privileges, ignore if fails
327 MonSession
*session
= m
->get_session();
329 if (!session
->is_capable("mds", MON_CAP_X
)) {
330 dout(0) << "preprocess_beacon got MMDSBeacon from entity with insufficient privileges "
331 << session
->caps
<< dendl
;
335 if (m
->get_fsid() != mon
->monmap
->fsid
) {
336 dout(0) << "preprocess_beacon on fsid " << m
->get_fsid() << " != " << mon
->monmap
->fsid
<< dendl
;
340 dout(12) << "preprocess_beacon " << *m
341 << " from " << m
->get_orig_source_inst()
342 << " " << m
->get_compat()
345 // make sure the address has a port
346 if (m
->get_orig_source_addr().get_port() == 0) {
347 dout(1) << " ignoring boot message without a port" << dendl
;
352 if (!m
->get_compat().writeable(fsmap
.compat
)) {
353 dout(1) << " mds " << m
->get_source_inst() << " can't write to fsmap " << fsmap
.compat
<< dendl
;
358 if (!mon
->is_leader())
361 // booted, but not in map?
362 if (!pending_fsmap
.gid_exists(gid
)) {
363 if (state
!= MDSMap::STATE_BOOT
) {
364 dout(7) << "mds_beacon " << *m
<< " is not in fsmap (state "
365 << ceph_mds_state_name(state
) << ")" << dendl
;
368 null_map
.epoch
= fsmap
.epoch
;
369 null_map
.compat
= fsmap
.compat
;
370 mon
->send_reply(op
, new MMDSMap(mon
->monmap
->fsid
, &null_map
));
373 return false; // not booted yet.
376 dout(10) << __func__
<< ": GID exists in map: " << gid
<< dendl
;
377 info
= pending_fsmap
.get_info_gid(gid
);
380 if (info
.state_seq
> seq
) {
381 dout(7) << "mds_beacon " << *m
<< " has old seq, ignoring" << dendl
;
385 // Work out the latest epoch that this daemon should have seen
387 fs_cluster_id_t fscid
= pending_fsmap
.mds_roles
.at(gid
);
388 if (fscid
== FS_CLUSTER_ID_NONE
) {
389 effective_epoch
= pending_fsmap
.standby_epochs
.at(gid
);
391 effective_epoch
= pending_fsmap
.get_filesystem(fscid
)->mds_map
.epoch
;
393 if (effective_epoch
!= m
->get_last_epoch_seen()) {
394 dout(10) << "mds_beacon " << *m
395 << " ignoring requested state, because mds hasn't seen latest map" << dendl
;
402 return false; // no longer laggy, need to update map.
404 if (state
== MDSMap::STATE_BOOT
) {
405 // ignore, already booted.
408 // is there a state change here?
409 if (info
.state
!= state
) {
410 // legal state change?
411 if ((info
.state
== MDSMap::STATE_STANDBY
||
412 info
.state
== MDSMap::STATE_STANDBY_REPLAY
) && state
> 0) {
413 dout(10) << "mds_beacon mds can't activate itself (" << ceph_mds_state_name(info
.state
)
414 << " -> " << ceph_mds_state_name(state
) << ")" << dendl
;
418 if ((state
== MDSMap::STATE_STANDBY
|| state
== MDSMap::STATE_STANDBY_REPLAY
)
419 && info
.rank
!= MDS_RANK_NONE
)
421 dout(4) << "mds_beacon MDS can't go back into standby after taking rank: "
422 "held rank " << info
.rank
<< " while requesting state "
423 << ceph_mds_state_name(state
) << dendl
;
431 // Comparing known daemon health with m->get_health()
432 // and return false (i.e. require proposal) if they
433 // do not match, to update our stored
434 if (!(pending_daemon_health
[gid
] == m
->get_health())) {
435 dout(20) << __func__
<< " health metrics for gid " << gid
<< " were updated" << dendl
;
441 // note time and reply
442 assert(effective_epoch
> 0);
445 new MMDSBeacon(mon
->monmap
->fsid
, m
->get_global_id(), m
->get_name(),
446 effective_epoch
, state
, seq
,
447 CEPH_FEATURES_SUPPORTED_DEFAULT
));
451 // I won't reply this beacon, drop it.
456 bool MDSMonitor::preprocess_offload_targets(MonOpRequestRef op
)
458 op
->mark_mdsmon_event(__func__
);
459 MMDSLoadTargets
*m
= static_cast<MMDSLoadTargets
*>(op
->get_req());
460 dout(10) << "preprocess_offload_targets " << *m
<< " from " << m
->get_orig_source() << dendl
;
462 // check privileges, ignore message if fails
463 MonSession
*session
= m
->get_session();
466 if (!session
->is_capable("mds", MON_CAP_X
)) {
467 dout(0) << "preprocess_offload_targets got MMDSLoadTargets from entity with insufficient caps "
468 << session
->caps
<< dendl
;
472 if (fsmap
.gid_exists(m
->global_id
) &&
473 m
->targets
== fsmap
.get_info_gid(m
->global_id
).export_targets
)
483 bool MDSMonitor::prepare_update(MonOpRequestRef op
)
485 op
->mark_mdsmon_event(__func__
);
486 PaxosServiceMessage
*m
= static_cast<PaxosServiceMessage
*>(op
->get_req());
487 dout(7) << "prepare_update " << *m
<< dendl
;
489 switch (m
->get_type()) {
492 return prepare_beacon(op
);
494 case MSG_MON_COMMAND
:
495 return prepare_command(op
);
497 case MSG_MDS_OFFLOAD_TARGETS
:
498 return prepare_offload_targets(op
);
507 bool MDSMonitor::prepare_beacon(MonOpRequestRef op
)
509 op
->mark_mdsmon_event(__func__
);
510 MMDSBeacon
*m
= static_cast<MMDSBeacon
*>(op
->get_req());
511 // -- this is an update --
512 dout(12) << "prepare_beacon " << *m
<< " from " << m
->get_orig_source_inst() << dendl
;
513 entity_addr_t addr
= m
->get_orig_source_inst().addr
;
514 mds_gid_t gid
= m
->get_global_id();
515 MDSMap::DaemonState state
= m
->get_state();
516 version_t seq
= m
->get_seq();
518 dout(20) << __func__
<< " got health from gid " << gid
<< " with " << m
->get_health().metrics
.size() << " metrics." << dendl
;
520 // Calculate deltas of health metrics created and removed
521 // Do this by type rather than MDSHealthMetric equality, because messages can
522 // change a lot when they include e.g. a number of items.
523 const auto &old_health
= pending_daemon_health
[gid
].metrics
;
524 const auto &new_health
= m
->get_health().metrics
;
526 std::set
<mds_metric_t
> old_types
;
527 for (const auto &i
: old_health
) {
528 old_types
.insert(i
.type
);
531 std::set
<mds_metric_t
> new_types
;
532 for (const auto &i
: new_health
) {
533 new_types
.insert(i
.type
);
536 for (const auto &new_metric
: new_health
) {
537 if (old_types
.count(new_metric
.type
) == 0) {
538 std::stringstream msg
;
539 msg
<< "MDS health message (" << m
->get_orig_source_inst().name
<< "): "
540 << new_metric
.message
;
541 if (new_metric
.sev
== HEALTH_ERR
) {
542 mon
->clog
->error() << msg
.str();
543 } else if (new_metric
.sev
== HEALTH_WARN
) {
544 mon
->clog
->warn() << msg
.str();
546 mon
->clog
->info() << msg
.str();
551 // Log the disappearance of health messages at INFO
552 for (const auto &old_metric
: old_health
) {
553 if (new_types
.count(old_metric
.type
) == 0) {
554 mon
->clog
->info() << "MDS health message cleared ("
555 << m
->get_orig_source_inst().name
<< "): " << old_metric
.message
;
560 pending_daemon_health
[gid
] = m
->get_health();
563 if (state
== MDSMap::STATE_BOOT
) {
564 // zap previous instance of this name?
565 if (g_conf
->mds_enforce_unique_name
) {
566 bool failed_mds
= false;
567 while (mds_gid_t existing
= pending_fsmap
.find_mds_gid_by_name(m
->get_name())) {
568 if (!mon
->osdmon()->is_writeable()) {
569 mon
->osdmon()->wait_for_writeable(op
, new C_RetryMessage(this, op
));
572 const MDSMap::mds_info_t
&existing_info
=
573 pending_fsmap
.get_info_gid(existing
);
574 mon
->clog
->info() << existing_info
.human_name() << " restarted";
575 fail_mds_gid(existing
);
579 assert(mon
->osdmon()->is_writeable());
580 request_proposal(mon
->osdmon());
584 // Add this daemon to the map
585 if (pending_fsmap
.mds_roles
.count(gid
) == 0) {
586 MDSMap::mds_info_t new_info
;
587 new_info
.global_id
= gid
;
588 new_info
.name
= m
->get_name();
589 new_info
.addr
= addr
;
590 new_info
.mds_features
= m
->get_mds_features();
591 new_info
.state
= MDSMap::STATE_STANDBY
;
592 new_info
.state_seq
= seq
;
593 new_info
.standby_for_rank
= m
->get_standby_for_rank();
594 new_info
.standby_for_name
= m
->get_standby_for_name();
595 new_info
.standby_for_fscid
= m
->get_standby_for_fscid();
596 new_info
.standby_replay
= m
->get_standby_replay();
597 pending_fsmap
.insert(new_info
);
600 // Resolve standby_for_name to a rank
601 const MDSMap::mds_info_t
&info
= pending_fsmap
.get_info_gid(gid
);
602 if (!info
.standby_for_name
.empty()) {
603 const MDSMap::mds_info_t
*leaderinfo
= fsmap
.find_by_name(
604 info
.standby_for_name
);
605 if (leaderinfo
&& (leaderinfo
->rank
>= 0)) {
606 auto fscid
= pending_fsmap
.mds_roles
.at(leaderinfo
->global_id
);
607 auto fs
= pending_fsmap
.get_filesystem(fscid
);
609 pending_fsmap
.modify_daemon(gid
, [fscid
, leaderinfo
](
610 MDSMap::mds_info_t
*info
) {
611 info
->standby_for_rank
= leaderinfo
->rank
;
612 info
->standby_for_fscid
= fscid
;
617 // initialize the beacon timer
618 last_beacon
[gid
].stamp
= ceph_clock_now();
619 last_beacon
[gid
].seq
= seq
;
622 if (!pending_fsmap
.compat
.writeable(m
->get_compat())) {
623 dout(10) << " fsmap " << pending_fsmap
.compat
624 << " can't write to new mds' " << m
->get_compat()
625 << ", updating fsmap and killing old mds's"
627 pending_fsmap
.update_compat(m
->get_compat());
630 update_metadata(m
->get_global_id(), m
->get_sys_info());
633 const MDSMap::mds_info_t
&info
= pending_fsmap
.get_info_gid(gid
);
634 // Old MDS daemons don't mention that they're standby replay until
635 // after they've sent their boot beacon, so update this field.
636 if (info
.standby_replay
!= m
->get_standby_replay()) {
637 pending_fsmap
.modify_daemon(info
.global_id
, [&m
](
638 MDSMap::mds_info_t
*i
)
640 i
->standby_replay
= m
->get_standby_replay();
644 if (info
.state
== MDSMap::STATE_STOPPING
&& state
!= MDSMap::STATE_STOPPED
) {
645 // we can't transition to any other states from STOPPING
646 dout(0) << "got beacon for MDS in STATE_STOPPING, ignoring requested state change"
653 dout(10) << "prepare_beacon clearing laggy flag on " << addr
<< dendl
;
654 pending_fsmap
.modify_daemon(info
.global_id
, [](MDSMap::mds_info_t
*info
)
661 dout(10) << "prepare_beacon mds." << info
.rank
662 << " " << ceph_mds_state_name(info
.state
)
663 << " -> " << ceph_mds_state_name(state
)
664 << " standby_for_rank=" << m
->get_standby_for_rank()
666 if (state
== MDSMap::STATE_STOPPED
) {
667 const auto fscid
= pending_fsmap
.mds_roles
.at(gid
);
668 auto fs
= pending_fsmap
.get_filesystem(fscid
);
670 mon
->clog
->info() << info
.human_name() << " finished "
671 << "deactivating rank " << info
.rank
<< " in filesystem "
672 << fs
->mds_map
.fs_name
<< " (now has "
673 << fs
->mds_map
.get_num_in_mds() - 1 << " ranks)";
675 auto erased
= pending_fsmap
.stop(gid
);
676 erased
.push_back(gid
);
678 for (const auto &erased_gid
: erased
) {
679 last_beacon
.erase(erased_gid
);
680 if (pending_daemon_health
.count(erased_gid
)) {
681 pending_daemon_health
.erase(erased_gid
);
682 pending_daemon_health_rm
.insert(erased_gid
);
687 } else if (state
== MDSMap::STATE_DAMAGED
) {
688 if (!mon
->osdmon()->is_writeable()) {
689 dout(4) << __func__
<< ": DAMAGED from rank " << info
.rank
690 << " waiting for osdmon writeable to blacklist it" << dendl
;
691 mon
->osdmon()->wait_for_writeable(op
, new C_RetryMessage(this, op
));
695 // Record this MDS rank as damaged, so that other daemons
696 // won't try to run it.
697 dout(4) << __func__
<< ": marking rank "
698 << info
.rank
<< " damaged" << dendl
;
700 utime_t until
= ceph_clock_now();
701 until
+= g_conf
->mds_blacklist_interval
;
702 const auto blacklist_epoch
= mon
->osdmon()->blacklist(info
.addr
, until
);
703 request_proposal(mon
->osdmon());
704 pending_fsmap
.damaged(gid
, blacklist_epoch
);
705 last_beacon
.erase(gid
);
707 // Respond to MDS, so that it knows it can continue to shut down
710 mon
->monmap
->fsid
, m
->get_global_id(),
711 m
->get_name(), fsmap
.get_epoch(), state
, seq
,
712 CEPH_FEATURES_SUPPORTED_DEFAULT
));
713 } else if (state
== MDSMap::STATE_DNE
) {
714 if (!mon
->osdmon()->is_writeable()) {
715 dout(4) << __func__
<< ": DNE from rank " << info
.rank
716 << " waiting for osdmon writeable to blacklist it" << dendl
;
717 mon
->osdmon()->wait_for_writeable(op
, new C_RetryMessage(this, op
));
722 assert(mon
->osdmon()->is_writeable());
723 request_proposal(mon
->osdmon());
725 // Respond to MDS, so that it knows it can continue to shut down
728 mon
->monmap
->fsid
, m
->get_global_id(),
729 m
->get_name(), fsmap
.get_epoch(), state
, seq
,
730 CEPH_FEATURES_SUPPORTED_DEFAULT
));
731 } else if (info
.state
== MDSMap::STATE_STANDBY
&& state
!= info
.state
) {
732 // Standby daemons should never modify their own
733 // state. Reject any attempts to do so.
734 derr
<< "standby " << gid
<< " attempted to change state to "
735 << ceph_mds_state_name(state
) << ", rejecting" << dendl
;
737 } else if (info
.state
!= MDSMap::STATE_STANDBY
&& state
!= info
.state
&&
738 !MDSMap::state_transition_valid(info
.state
, state
)) {
739 // Validate state transitions for daemons that hold a rank
740 derr
<< "daemon " << gid
<< " (rank " << info
.rank
<< ") "
741 << "reported invalid state transition "
742 << ceph_mds_state_name(info
.state
) << " -> "
743 << ceph_mds_state_name(state
) << dendl
;
746 // Made it through special cases and validations, record the
747 // daemon's reported state to the FSMap.
748 pending_fsmap
.modify_daemon(gid
, [state
, seq
](MDSMap::mds_info_t
*info
) {
750 info
->state_seq
= seq
;
753 if (state
== MDSMap::STATE_ACTIVE
) {
754 auto fscid
= pending_fsmap
.mds_roles
.at(gid
);
755 auto fs
= pending_fsmap
.get_filesystem(fscid
);
756 mon
->clog
->info() << info
.human_name() << " is now active in "
757 << "filesystem " << fs
->mds_map
.fs_name
<< " as rank "
763 dout(7) << "prepare_beacon pending map now:" << dendl
;
764 print_map(pending_fsmap
);
766 wait_for_finished_proposal(op
, new FunctionContext([op
, this](int r
){
768 _updated(op
); // success
769 else if (r
== -ECANCELED
) {
772 dispatch(op
); // try again
779 bool MDSMonitor::prepare_offload_targets(MonOpRequestRef op
)
781 op
->mark_mdsmon_event(__func__
);
782 MMDSLoadTargets
*m
= static_cast<MMDSLoadTargets
*>(op
->get_req());
783 mds_gid_t gid
= m
->global_id
;
784 if (pending_fsmap
.gid_has_rank(gid
)) {
785 dout(10) << "prepare_offload_targets " << gid
<< " " << m
->targets
<< dendl
;
786 pending_fsmap
.update_export_targets(gid
, m
->targets
);
788 dout(10) << "prepare_offload_targets " << gid
<< " not in map" << dendl
;
793 bool MDSMonitor::should_propose(double& delay
)
795 // delegate to PaxosService to assess whether we should propose
796 return PaxosService::should_propose(delay
);
799 void MDSMonitor::_updated(MonOpRequestRef op
)
801 op
->mark_mdsmon_event(__func__
);
802 MMDSBeacon
*m
= static_cast<MMDSBeacon
*>(op
->get_req());
803 dout(10) << "_updated " << m
->get_orig_source() << " " << *m
<< dendl
;
804 mon
->clog
->debug() << m
->get_orig_source_inst() << " "
805 << ceph_mds_state_name(m
->get_state());
807 if (m
->get_state() == MDSMap::STATE_STOPPED
) {
808 // send the map manually (they're out of the map, so they won't get it automatic)
810 null_map
.epoch
= fsmap
.epoch
;
811 null_map
.compat
= fsmap
.compat
;
812 mon
->send_reply(op
, new MMDSMap(mon
->monmap
->fsid
, &null_map
));
814 mon
->send_reply(op
, new MMDSBeacon(mon
->monmap
->fsid
,
820 CEPH_FEATURES_SUPPORTED_DEFAULT
));
824 void MDSMonitor::on_active()
829 if (mon
->is_leader()) {
830 mon
->clog
->debug() << "fsmap " << fsmap
;
834 void MDSMonitor::get_health(list
<pair
<health_status_t
, string
> >& summary
,
835 list
<pair
<health_status_t
, string
> > *detail
,
836 CephContext
* cct
) const
838 fsmap
.get_health(summary
, detail
);
840 // For each MDS GID...
841 const auto info_map
= fsmap
.get_mds_info();
842 for (const auto &i
: info_map
) {
843 const auto &gid
= i
.first
;
844 const auto &info
= i
.second
;
848 mon
->store
->get(MDS_HEALTH_PREFIX
, stringify(gid
), bl
);
850 derr
<< "Missing health data for MDS " << gid
<< dendl
;
854 bufferlist::iterator bl_i
= bl
.begin();
857 for (const auto &metric
: health
.metrics
) {
858 const int rank
= info
.rank
;
859 std::ostringstream message
;
860 message
<< "mds" << rank
<< ": " << metric
.message
;
861 summary
.push_back(std::make_pair(metric
.sev
, message
.str()));
864 // There is no way for us to clealy associate detail entries with summary entries (#7192), so
865 // we duplicate the summary message in the detail string and tag the metadata on.
866 std::ostringstream detail_message
;
867 detail_message
<< message
.str();
868 if (metric
.metadata
.size()) {
869 detail_message
<< "(";
870 auto k
= metric
.metadata
.begin();
871 while (k
!= metric
.metadata
.end()) {
872 detail_message
<< k
->first
<< ": " << k
->second
;
873 if (boost::next(k
) != metric
.metadata
.end()) {
874 detail_message
<< ", ";
878 detail_message
<< ")";
880 detail
->push_back(std::make_pair(metric
.sev
, detail_message
.str()));
886 void MDSMonitor::dump_info(Formatter
*f
)
888 f
->open_object_section("fsmap");
892 f
->dump_unsigned("mdsmap_first_committed", get_first_committed());
893 f
->dump_unsigned("mdsmap_last_committed", get_last_committed());
896 bool MDSMonitor::preprocess_command(MonOpRequestRef op
)
898 op
->mark_mdsmon_event(__func__
);
899 MMonCommand
*m
= static_cast<MMonCommand
*>(op
->get_req());
904 map
<string
, cmd_vartype
> cmdmap
;
905 if (!cmdmap_from_json(m
->cmd
, &cmdmap
, ss
)) {
906 // ss has reason for failure
907 string rs
= ss
.str();
908 mon
->reply_command(op
, -EINVAL
, rs
, rdata
, get_last_committed());
913 cmd_getval(g_ceph_context
, cmdmap
, "prefix", prefix
);
915 cmd_getval(g_ceph_context
, cmdmap
, "format", format
, string("plain"));
916 boost::scoped_ptr
<Formatter
> f(Formatter::create(format
));
918 MonSession
*session
= m
->get_session();
920 mon
->reply_command(op
, -EACCES
, "access denied", rdata
, get_last_committed());
924 if (prefix
== "mds stat") {
926 f
->open_object_section("mds_stat");
934 } else if (prefix
== "mds dump") {
939 if (cmd_getval(g_ceph_context
, cmdmap
, "epoch", epocharg
)) {
942 int err
= get_version(epoch
, b
);
943 if (err
== -ENOENT
) {
955 const MDSMap
*mdsmap
= nullptr;
957 blank
.epoch
= fsmap
.epoch
;
958 if (fsmap
.legacy_client_fscid
!= FS_CLUSTER_ID_NONE
) {
959 mdsmap
= &(fsmap
.filesystems
[fsmap
.legacy_client_fscid
]->mds_map
);
964 f
->open_object_section("mdsmap");
965 mdsmap
->dump(f
.get());
975 ss
<< "dumped fsmap epoch " << p
->get_epoch();
981 } else if (prefix
== "fs dump") {
986 if (cmd_getval(g_ceph_context
, cmdmap
, "epoch", epocharg
)) {
989 int err
= get_version(epoch
, b
);
990 if (err
== -ENOENT
) {
1003 f
->open_object_section("fsmap");
1014 ss
<< "dumped fsmap epoch " << p
->get_epoch();
1019 } else if (prefix
== "mds metadata") {
1021 f
.reset(Formatter::create("json-pretty"));
1024 bool all
= !cmd_getval(g_ceph_context
, cmdmap
, "who", who
);
1025 dout(1) << "all = " << all
<< dendl
;
1028 // Dump all MDSs' metadata
1029 const auto all_info
= fsmap
.get_mds_info();
1031 f
->open_array_section("mds_metadata");
1032 for(const auto &i
: all_info
) {
1033 const auto &info
= i
.second
;
1035 f
->open_object_section("mds");
1036 f
->dump_string("name", info
.name
);
1037 std::ostringstream get_err
;
1038 r
= dump_metadata(info
.name
, f
.get(), get_err
);
1039 if (r
== -EINVAL
|| r
== -ENOENT
) {
1040 // Drop error, list what metadata we do have
1041 dout(1) << get_err
.str() << dendl
;
1043 } else if (r
!= 0) {
1044 derr
<< "Unexpected error reading metadata: " << cpp_strerror(r
)
1046 ss
<< get_err
.str();
1054 // Dump a single daemon's metadata
1055 f
->open_object_section("mds_metadata");
1056 r
= dump_metadata(who
, f
.get(), ss
);
1060 } else if (prefix
== "mds versions") {
1062 f
.reset(Formatter::create("json-pretty"));
1063 count_metadata("ceph_version", f
.get());
1066 } else if (prefix
== "mds count-metadata") {
1068 f
.reset(Formatter::create("json-pretty"));
1070 cmd_getval(g_ceph_context
, cmdmap
, "property", field
);
1071 count_metadata(field
, f
.get());
1074 } else if (prefix
== "mds getmap") {
1078 if (cmd_getval(g_ceph_context
, cmdmap
, "epoch", epocharg
)) {
1080 int err
= get_version(e
, b
);
1081 if (err
== -ENOENT
) {
1088 mm
.encode(rdata
, m
->get_connection()->get_features());
1089 ss
<< "got fsmap epoch " << mm
.get_epoch();
1093 fsmap
.encode(rdata
, m
->get_connection()->get_features());
1094 ss
<< "got fsmap epoch " << fsmap
.get_epoch();
1097 } else if (prefix
== "mds compat show") {
1099 f
->open_object_section("mds_compat");
1100 fsmap
.compat
.dump(f
.get());
1107 } else if (prefix
== "fs get") {
1109 cmd_getval(g_ceph_context
, cmdmap
, "fs_name", fs_name
);
1110 auto fs
= fsmap
.get_filesystem(fs_name
);
1111 if (fs
== nullptr) {
1112 ss
<< "filesystem '" << fs_name
<< "' not found";
1116 f
->open_object_section("filesystem");
1126 } else if (prefix
== "fs ls") {
1128 f
->open_array_section("filesystems");
1130 for (const auto i
: fsmap
.filesystems
) {
1131 const auto fs
= i
.second
;
1132 f
->open_object_section("filesystem");
1134 const MDSMap
&mds_map
= fs
->mds_map
;
1135 f
->dump_string("name", mds_map
.fs_name
);
1136 /* Output both the names and IDs of pools, for use by
1137 * humans and machines respectively */
1138 f
->dump_string("metadata_pool", mon
->osdmon()->osdmap
.get_pool_name(
1139 mds_map
.metadata_pool
));
1140 f
->dump_int("metadata_pool_id", mds_map
.metadata_pool
);
1141 f
->open_array_section("data_pool_ids");
1143 for (auto dpi
= mds_map
.data_pools
.begin();
1144 dpi
!= mds_map
.data_pools
.end(); ++dpi
) {
1145 f
->dump_int("data_pool_id", *dpi
);
1150 f
->open_array_section("data_pools");
1152 for (auto dpi
= mds_map
.data_pools
.begin();
1153 dpi
!= mds_map
.data_pools
.end(); ++dpi
) {
1154 const auto &name
= mon
->osdmon()->osdmap
.get_pool_name(
1156 f
->dump_string("data_pool", name
);
1168 for (const auto i
: fsmap
.filesystems
) {
1169 const auto fs
= i
.second
;
1170 const MDSMap
&mds_map
= fs
->mds_map
;
1171 const string
&md_pool_name
= mon
->osdmon()->osdmap
.get_pool_name(
1172 mds_map
.metadata_pool
);
1174 ds
<< "name: " << mds_map
.fs_name
<< ", metadata pool: "
1175 << md_pool_name
<< ", data pools: [";
1176 for (auto dpi
: mds_map
.data_pools
) {
1177 const string
&pool_name
= mon
->osdmon()->osdmap
.get_pool_name(dpi
);
1178 ds
<< pool_name
<< " ";
1180 ds
<< "]" << std::endl
;
1183 if (fsmap
.filesystems
.empty()) {
1184 ds
<< "No filesystems enabled" << std::endl
;
1194 mon
->reply_command(op
, r
, rs
, rdata
, get_last_committed());
1200 bool MDSMonitor::fail_mds_gid(mds_gid_t gid
)
1202 const MDSMap::mds_info_t info
= pending_fsmap
.get_info_gid(gid
);
1203 dout(10) << "fail_mds_gid " << gid
<< " mds." << info
.name
<< " role " << info
.rank
<< dendl
;
1205 epoch_t blacklist_epoch
= 0;
1206 if (info
.rank
>= 0 && info
.state
!= MDSMap::STATE_STANDBY_REPLAY
) {
1207 utime_t until
= ceph_clock_now();
1208 until
+= g_conf
->mds_blacklist_interval
;
1209 blacklist_epoch
= mon
->osdmon()->blacklist(info
.addr
, until
);
1212 pending_fsmap
.erase(gid
, blacklist_epoch
);
1213 last_beacon
.erase(gid
);
1214 if (pending_daemon_health
.count(gid
)) {
1215 pending_daemon_health
.erase(gid
);
1216 pending_daemon_health_rm
.insert(gid
);
1219 return blacklist_epoch
!= 0;
1222 mds_gid_t
MDSMonitor::gid_from_arg(const std::string
& arg
, std::ostream
&ss
)
1224 const FSMap
*relevant_fsmap
= mon
->is_leader() ? &pending_fsmap
: &fsmap
;
1226 // Try parsing as a role
1228 std::ostringstream ignore_err
; // Don't spam 'ss' with parse_role errors
1229 int r
= parse_role(arg
, &role
, ignore_err
);
1231 // See if a GID is assigned to this role
1232 auto fs
= relevant_fsmap
->get_filesystem(role
.fscid
);
1233 assert(fs
!= nullptr); // parse_role ensures it exists
1234 if (fs
->mds_map
.is_up(role
.rank
)) {
1235 dout(10) << __func__
<< ": validated rank/GID " << role
1236 << " as a rank" << dendl
;
1237 return fs
->mds_map
.get_mds_info(role
.rank
).global_id
;
1241 // Try parsing as a gid
1243 unsigned long long maybe_gid
= strict_strtoll(arg
.c_str(), 10, &err
);
1245 // Not a role or a GID, try as a daemon name
1246 const MDSMap::mds_info_t
*mds_info
= relevant_fsmap
->find_by_name(arg
);
1248 ss
<< "MDS named '" << arg
1249 << "' does not exist, or is not up";
1250 return MDS_GID_NONE
;
1252 dout(10) << __func__
<< ": resolved MDS name '" << arg
1253 << "' to GID " << mds_info
->global_id
<< dendl
;
1254 return mds_info
->global_id
;
1256 // Not a role, but parses as a an integer, might be a GID
1257 dout(10) << __func__
<< ": treating MDS reference '" << arg
1258 << "' as an integer " << maybe_gid
<< dendl
;
1260 if (relevant_fsmap
->gid_exists(mds_gid_t(maybe_gid
))) {
1261 return mds_gid_t(maybe_gid
);
1265 dout(1) << __func__
<< ": rank/GID " << arg
1266 << " not a existent rank or GID" << dendl
;
1267 return MDS_GID_NONE
;
1270 int MDSMonitor::fail_mds(std::ostream
&ss
, const std::string
&arg
,
1271 MDSMap::mds_info_t
*failed_info
)
1273 assert(failed_info
!= nullptr);
1275 mds_gid_t gid
= gid_from_arg(arg
, ss
);
1276 if (gid
== MDS_GID_NONE
) {
1279 if (!mon
->osdmon()->is_writeable()) {
1283 // Take a copy of the info before removing the MDS from the map,
1284 // so that the caller knows which mds (if any) they ended up removing.
1285 *failed_info
= pending_fsmap
.get_info_gid(gid
);
1288 ss
<< "failed mds gid " << gid
;
1289 assert(mon
->osdmon()->is_writeable());
1290 request_proposal(mon
->osdmon());
1294 bool MDSMonitor::prepare_command(MonOpRequestRef op
)
1296 op
->mark_mdsmon_event(__func__
);
1297 MMonCommand
*m
= static_cast<MMonCommand
*>(op
->get_req());
1302 map
<string
, cmd_vartype
> cmdmap
;
1303 if (!cmdmap_from_json(m
->cmd
, &cmdmap
, ss
)) {
1304 string rs
= ss
.str();
1305 mon
->reply_command(op
, -EINVAL
, rs
, rdata
, get_last_committed());
1310 cmd_getval(g_ceph_context
, cmdmap
, "prefix", prefix
);
1312 /* Refuse access if message not associated with a valid session */
1313 MonSession
*session
= m
->get_session();
1315 mon
->reply_command(op
, -EACCES
, "access denied", rdata
, get_last_committed());
1319 bool batched_propose
= false;
1320 for (auto h
: handlers
) {
1321 if (h
->can_handle(prefix
)) {
1322 batched_propose
= h
->batched_propose();
1323 if (batched_propose
) {
1326 r
= h
->handle(mon
, pending_fsmap
, op
, cmdmap
, ss
);
1327 if (batched_propose
) {
1332 // message has been enqueued for retry; return.
1333 dout(4) << __func__
<< " enqueue for retry by prepare_command" << dendl
;
1337 // On successful updates, print the updated map
1338 print_map(pending_fsmap
);
1340 // Successful or not, we're done: respond.
1346 r
= filesystem_command(op
, prefix
, cmdmap
, ss
);
1349 } else if (r
== -EAGAIN
) {
1350 // Do not reply, the message has been enqueued for retry
1351 dout(4) << __func__
<< " enqueue for retry by filesystem_command" << dendl
;
1353 } else if (r
!= -ENOSYS
) {
1357 // Only handle legacy commands if there is a filesystem configured
1358 if (pending_fsmap
.legacy_client_fscid
== FS_CLUSTER_ID_NONE
) {
1359 if (pending_fsmap
.filesystems
.size() == 0) {
1360 ss
<< "No filesystem configured: use `ceph fs new` to create a filesystem";
1362 ss
<< "No filesystem set for use with legacy commands";
1368 r
= legacy_filesystem_command(op
, prefix
, cmdmap
, ss
);
1370 if (r
== -ENOSYS
&& ss
.str().empty()) {
1371 ss
<< "unrecognized command";
1375 dout(4) << __func__
<< " done, r=" << r
<< dendl
;
1376 /* Compose response */
1381 // success.. delay reply
1382 wait_for_finished_proposal(op
, new Monitor::C_Command(mon
, op
, r
, rs
,
1383 get_last_committed() + 1));
1384 if (batched_propose
) {
1385 force_immediate_propose();
1389 // reply immediately
1390 mon
->reply_command(op
, r
, rs
, rdata
, get_last_committed());
1397 * Given one of the following forms:
1402 * Parse into a mds_role_t. The rank-only form is only valid
1403 * if legacy_client_ns is set.
1405 int MDSMonitor::parse_role(
1406 const std::string
&role_str
,
1410 const FSMap
*relevant_fsmap
= &fsmap
;
1411 if (mon
->is_leader()) {
1412 relevant_fsmap
= &pending_fsmap
;
1414 return relevant_fsmap
->parse_role(role_str
, role
, ss
);
1417 int MDSMonitor::filesystem_command(
1419 std::string
const &prefix
,
1420 map
<string
, cmd_vartype
> &cmdmap
,
1421 std::stringstream
&ss
)
1423 dout(4) << __func__
<< " prefix='" << prefix
<< "'" << dendl
;
1424 op
->mark_mdsmon_event(__func__
);
1427 cmd_getval(g_ceph_context
, cmdmap
, "who", whostr
);
1429 if (prefix
== "mds stop" ||
1430 prefix
== "mds deactivate") {
1433 r
= parse_role(whostr
, &role
, ss
);
1437 auto fs
= pending_fsmap
.get_filesystem(role
.fscid
);
1439 if (!fs
->mds_map
.is_active(role
.rank
)) {
1441 ss
<< "mds." << role
<< " not active ("
1442 << ceph_mds_state_name(fs
->mds_map
.get_state(role
.rank
)) << ")";
1443 } else if (fs
->mds_map
.get_root() == role
.rank
||
1444 fs
->mds_map
.get_tableserver() == role
.rank
) {
1446 ss
<< "can't tell the root (" << fs
->mds_map
.get_root()
1447 << ") or tableserver (" << fs
->mds_map
.get_tableserver()
1448 << ") to deactivate";
1449 } else if (role
.rank
!= fs
->mds_map
.get_last_in_mds()) {
1451 ss
<< "mds." << role
<< " doesn't have the max rank ("
1452 << fs
->mds_map
.get_last_in_mds() << ")";
1453 } else if (fs
->mds_map
.get_num_in_mds() <= size_t(fs
->mds_map
.get_max_mds())) {
1455 ss
<< "must decrease max_mds or else MDS will immediately reactivate";
1458 mds_gid_t gid
= fs
->mds_map
.up
.at(role
.rank
);
1459 ss
<< "telling mds." << role
<< " "
1460 << pending_fsmap
.get_info_gid(gid
).addr
<< " to deactivate";
1462 pending_fsmap
.modify_daemon(gid
, [](MDSMap::mds_info_t
*info
) {
1463 info
->state
= MDSMap::STATE_STOPPING
;
1466 } else if (prefix
== "mds set_state") {
1468 if (!cmd_getval(g_ceph_context
, cmdmap
, "gid", gid
)) {
1469 ss
<< "error parsing 'gid' value '"
1470 << cmd_vartype_stringify(cmdmap
["gid"]) << "'";
1473 MDSMap::DaemonState state
;
1474 if (!cmd_getval(g_ceph_context
, cmdmap
, "state", state
)) {
1475 ss
<< "error parsing 'state' string value '"
1476 << cmd_vartype_stringify(cmdmap
["state"]) << "'";
1479 if (pending_fsmap
.gid_exists(gid
)) {
1480 pending_fsmap
.modify_daemon(gid
, [state
](MDSMap::mds_info_t
*info
) {
1481 info
->state
= state
;
1483 ss
<< "set mds gid " << gid
<< " to state " << state
<< " "
1484 << ceph_mds_state_name(state
);
1487 } else if (prefix
== "mds fail") {
1489 cmd_getval(g_ceph_context
, cmdmap
, "who", who
);
1491 MDSMap::mds_info_t failed_info
;
1492 r
= fail_mds(ss
, who
, &failed_info
);
1493 if (r
< 0 && r
== -EAGAIN
) {
1494 mon
->osdmon()->wait_for_writeable(op
, new C_RetryMessage(this, op
));
1495 return -EAGAIN
; // don't propose yet; wait for message to be retried
1496 } else if (r
== 0) {
1497 // Only log if we really did something (not when was already gone)
1498 if (failed_info
.global_id
!= MDS_GID_NONE
) {
1499 mon
->clog
->info() << failed_info
.human_name() << " marked failed by "
1500 << op
->get_session()->entity_name
;
1503 } else if (prefix
== "mds rm") {
1505 if (!cmd_getval(g_ceph_context
, cmdmap
, "gid", gid
)) {
1506 ss
<< "error parsing 'gid' value '"
1507 << cmd_vartype_stringify(cmdmap
["gid"]) << "'";
1510 if (!pending_fsmap
.gid_exists(gid
)) {
1511 ss
<< "mds gid " << gid
<< " dne";
1514 MDSMap::DaemonState state
= pending_fsmap
.get_info_gid(gid
).state
;
1516 ss
<< "cannot remove active mds." << pending_fsmap
.get_info_gid(gid
).name
1517 << " rank " << pending_fsmap
.get_info_gid(gid
).rank
;
1520 pending_fsmap
.erase(gid
, {});
1521 ss
<< "removed mds gid " << gid
;
1525 } else if (prefix
== "mds rmfailed") {
1527 if (!cmd_getval(g_ceph_context
, cmdmap
, "confirm", confirm
) ||
1528 confirm
!= "--yes-i-really-mean-it") {
1529 ss
<< "WARNING: this can make your filesystem inaccessible! "
1530 "Add --yes-i-really-mean-it if you are sure you wish to continue.";
1534 std::string role_str
;
1535 cmd_getval(g_ceph_context
, cmdmap
, "who", role_str
);
1537 int r
= parse_role(role_str
, &role
, ss
);
1539 ss
<< "invalid role '" << role_str
<< "'";
1543 pending_fsmap
.modify_filesystem(
1545 [role
](std::shared_ptr
<Filesystem
> fs
)
1547 fs
->mds_map
.failed
.erase(role
.rank
);
1550 ss
<< "removed failed mds." << role
;
1552 } else if (prefix
== "mds compat rm_compat") {
1554 if (!cmd_getval(g_ceph_context
, cmdmap
, "feature", f
)) {
1555 ss
<< "error parsing feature value '"
1556 << cmd_vartype_stringify(cmdmap
["feature"]) << "'";
1559 if (pending_fsmap
.compat
.compat
.contains(f
)) {
1560 ss
<< "removing compat feature " << f
;
1561 CompatSet modified
= pending_fsmap
.compat
;
1562 modified
.compat
.remove(f
);
1563 pending_fsmap
.update_compat(modified
);
1565 ss
<< "compat feature " << f
<< " not present in " << pending_fsmap
.compat
;
1568 } else if (prefix
== "mds compat rm_incompat") {
1570 if (!cmd_getval(g_ceph_context
, cmdmap
, "feature", f
)) {
1571 ss
<< "error parsing feature value '"
1572 << cmd_vartype_stringify(cmdmap
["feature"]) << "'";
1575 if (pending_fsmap
.compat
.incompat
.contains(f
)) {
1576 ss
<< "removing incompat feature " << f
;
1577 CompatSet modified
= pending_fsmap
.compat
;
1578 modified
.incompat
.remove(f
);
1579 pending_fsmap
.update_compat(modified
);
1581 ss
<< "incompat feature " << f
<< " not present in " << pending_fsmap
.compat
;
1584 } else if (prefix
== "mds repaired") {
1585 std::string role_str
;
1586 cmd_getval(g_ceph_context
, cmdmap
, "rank", role_str
);
1588 r
= parse_role(role_str
, &role
, ss
);
1593 bool modified
= pending_fsmap
.undamaged(role
.fscid
, role
.rank
);
1595 dout(4) << "repaired: restoring rank " << role
<< dendl
;
1597 dout(4) << "repaired: no-op on rank " << role
<< dendl
;
1609 * Helper to legacy_filesystem_command
1611 void MDSMonitor::modify_legacy_filesystem(
1612 std::function
<void(std::shared_ptr
<Filesystem
> )> fn
)
1614 pending_fsmap
.modify_filesystem(
1615 pending_fsmap
.legacy_client_fscid
,
1623 * Handle a command that affects the filesystem (i.e. a filesystem
1624 * must exist for the command to act upon).
1626 * @retval 0 Command was successfully handled and has side effects
1627 * @retval -EAGAIN Messages has been requeued for retry
1628 * @retval -ENOSYS Unknown command
1629 * @retval < 0 An error has occurred; **ss** may have been set.
1631 int MDSMonitor::legacy_filesystem_command(
1633 std::string
const &prefix
,
1634 map
<string
, cmd_vartype
> &cmdmap
,
1635 std::stringstream
&ss
)
1637 dout(4) << __func__
<< " prefix='" << prefix
<< "'" << dendl
;
1638 op
->mark_mdsmon_event(__func__
);
1641 cmd_getval(g_ceph_context
, cmdmap
, "who", whostr
);
1643 assert (pending_fsmap
.legacy_client_fscid
!= FS_CLUSTER_ID_NONE
);
1645 if (prefix
== "mds set_max_mds") {
1646 // NOTE: deprecated by "fs set max_mds"
1648 if (!cmd_getval(g_ceph_context
, cmdmap
, "maxmds", maxmds
) || maxmds
<= 0) {
1652 const MDSMap
& mdsmap
=
1653 pending_fsmap
.filesystems
.at(pending_fsmap
.legacy_client_fscid
)->mds_map
;
1655 if (!mdsmap
.allows_multimds() &&
1656 maxmds
> mdsmap
.get_max_mds() &&
1658 ss
<< "multi-MDS clusters are not enabled; set 'allow_multimds' to enable";
1662 if (maxmds
> MAX_MDS
) {
1663 ss
<< "may not have more than " << MAX_MDS
<< " MDS ranks";
1667 modify_legacy_filesystem(
1668 [maxmds
](std::shared_ptr
<Filesystem
> fs
)
1670 fs
->mds_map
.set_max_mds(maxmds
);
1674 ss
<< "max_mds = " << maxmds
;
1675 } else if (prefix
== "mds cluster_down") {
1676 // NOTE: deprecated by "fs set cluster_down"
1677 modify_legacy_filesystem(
1678 [](std::shared_ptr
<Filesystem
> fs
)
1680 fs
->mds_map
.set_flag(CEPH_MDSMAP_DOWN
);
1682 ss
<< "marked fsmap DOWN";
1684 } else if (prefix
== "mds cluster_up") {
1685 // NOTE: deprecated by "fs set cluster_up"
1686 modify_legacy_filesystem(
1687 [](std::shared_ptr
<Filesystem
> fs
)
1689 fs
->mds_map
.clear_flag(CEPH_MDSMAP_DOWN
);
1691 ss
<< "unmarked fsmap DOWN";
1701 void MDSMonitor::check_subs()
1703 std::list
<std::string
> types
;
1705 // Subscriptions may be to "mdsmap" (MDS and legacy clients),
1706 // "mdsmap.<namespace>", or to "fsmap" for the full state of all
1707 // filesystems. Build a list of all the types we service
1708 // subscriptions for.
1709 types
.push_back("fsmap");
1710 types
.push_back("fsmap.user");
1711 types
.push_back("mdsmap");
1712 for (const auto &i
: fsmap
.filesystems
) {
1713 auto fscid
= i
.first
;
1714 std::ostringstream oss
;
1715 oss
<< "mdsmap." << fscid
;
1716 types
.push_back(oss
.str());
1719 for (const auto &type
: types
) {
1720 if (mon
->session_map
.subs
.count(type
) == 0)
1722 xlist
<Subscription
*>::iterator p
= mon
->session_map
.subs
[type
]->begin();
1724 Subscription
*sub
= *p
;
1732 void MDSMonitor::check_sub(Subscription
*sub
)
1734 dout(20) << __func__
<< ": " << sub
->type
<< dendl
;
1736 if (sub
->type
== "fsmap") {
1737 if (sub
->next
<= fsmap
.get_epoch()) {
1738 sub
->session
->con
->send_message(new MFSMap(mon
->monmap
->fsid
, fsmap
));
1740 mon
->session_map
.remove_sub(sub
);
1742 sub
->next
= fsmap
.get_epoch() + 1;
1745 } else if (sub
->type
== "fsmap.user") {
1746 if (sub
->next
<= fsmap
.get_epoch()) {
1748 fsmap_u
.epoch
= fsmap
.get_epoch();
1749 fsmap_u
.legacy_client_fscid
= fsmap
.legacy_client_fscid
;
1750 for (auto p
= fsmap
.filesystems
.begin();
1751 p
!= fsmap
.filesystems
.end();
1753 FSMapUser::fs_info_t
& fs_info
= fsmap_u
.filesystems
[p
->first
];
1754 fs_info
.cid
= p
->first
;
1755 fs_info
.name
= p
->second
->mds_map
.fs_name
;
1757 sub
->session
->con
->send_message(new MFSMapUser(mon
->monmap
->fsid
, fsmap_u
));
1759 mon
->session_map
.remove_sub(sub
);
1761 sub
->next
= fsmap
.get_epoch() + 1;
1764 } else if (sub
->type
.compare(0, 6, "mdsmap") == 0) {
1765 if (sub
->next
> fsmap
.get_epoch()) {
1769 const bool is_mds
= sub
->session
->inst
.name
.is_mds();
1770 mds_gid_t mds_gid
= MDS_GID_NONE
;
1771 fs_cluster_id_t fscid
= FS_CLUSTER_ID_NONE
;
1773 // What (if any) namespace are you assigned to?
1774 auto mds_info
= fsmap
.get_mds_info();
1775 for (const auto &i
: mds_info
) {
1776 if (i
.second
.addr
== sub
->session
->inst
.addr
) {
1778 fscid
= fsmap
.mds_roles
.at(mds_gid
);
1782 // You're a client. Did you request a particular
1784 if (sub
->type
.find("mdsmap.") == 0) {
1785 auto namespace_id_str
= sub
->type
.substr(std::string("mdsmap.").size());
1786 dout(10) << __func__
<< ": namespace_id " << namespace_id_str
<< dendl
;
1788 fscid
= strict_strtoll(namespace_id_str
.c_str(), 10, &err
);
1790 // Client asked for a non-existent namespace, send them nothing
1791 dout(1) << "Invalid client subscription '" << sub
->type
1795 if (fsmap
.filesystems
.count(fscid
) == 0) {
1796 // Client asked for a non-existent namespace, send them nothing
1797 // TODO: something more graceful for when a client has a filesystem
1798 // mounted, and the fileysstem is deleted. Add a "shut down you fool"
1800 dout(1) << "Client subscribed to non-existent namespace '" <<
1801 fscid
<< "'" << dendl
;
1805 // Unqualified request for "mdsmap": give it the one marked
1806 // for use by legacy clients.
1807 if (fsmap
.legacy_client_fscid
!= FS_CLUSTER_ID_NONE
) {
1808 fscid
= fsmap
.legacy_client_fscid
;
1810 dout(1) << "Client subscribed for legacy filesystem but "
1811 "none is configured" << dendl
;
1816 dout(10) << __func__
<< ": is_mds=" << is_mds
<< ", fscid= " << fscid
<< dendl
;
1818 // Work out the effective latest epoch
1819 MDSMap
*mds_map
= nullptr;
1821 null_map
.compat
= fsmap
.compat
;
1822 if (fscid
== FS_CLUSTER_ID_NONE
) {
1823 // For a client, we should have already dropped out
1826 if (fsmap
.standby_daemons
.count(mds_gid
)) {
1827 // For an MDS, we need to feed it an MDSMap with its own state in
1828 null_map
.mds_info
[mds_gid
] = fsmap
.standby_daemons
[mds_gid
];
1829 null_map
.epoch
= fsmap
.standby_epochs
[mds_gid
];
1831 null_map
.epoch
= fsmap
.epoch
;
1833 mds_map
= &null_map
;
1835 // Check the effective epoch
1836 mds_map
= &(fsmap
.filesystems
.at(fscid
)->mds_map
);
1839 assert(mds_map
!= nullptr);
1840 dout(10) << __func__
<< " selected MDS map epoch " <<
1841 mds_map
->epoch
<< " for namespace " << fscid
<< " for subscriber "
1842 << sub
->session
->inst
.name
<< " who wants epoch " << sub
->next
<< dendl
;
1844 if (sub
->next
> mds_map
->epoch
) {
1847 auto msg
= new MMDSMap(mon
->monmap
->fsid
, mds_map
);
1849 sub
->session
->con
->send_message(msg
);
1851 mon
->session_map
.remove_sub(sub
);
1853 sub
->next
= mds_map
->get_epoch() + 1;
1859 void MDSMonitor::update_metadata(mds_gid_t gid
,
1860 const map
<string
, string
>& metadata
)
1862 if (metadata
.empty()) {
1865 pending_metadata
[gid
] = metadata
;
1867 MonitorDBStore::TransactionRef t
= paxos
->get_pending_transaction();
1869 ::encode(pending_metadata
, bl
);
1870 t
->put(MDS_METADATA_PREFIX
, "last_metadata", bl
);
1871 paxos
->trigger_propose();
1874 void MDSMonitor::remove_from_metadata(MonitorDBStore::TransactionRef t
)
1876 bool update
= false;
1877 for (map
<mds_gid_t
, Metadata
>::iterator i
= pending_metadata
.begin();
1878 i
!= pending_metadata
.end(); ) {
1879 if (!pending_fsmap
.gid_exists(i
->first
)) {
1880 pending_metadata
.erase(i
++);
1889 ::encode(pending_metadata
, bl
);
1890 t
->put(MDS_METADATA_PREFIX
, "last_metadata", bl
);
1893 int MDSMonitor::load_metadata(map
<mds_gid_t
, Metadata
>& m
)
1896 int r
= mon
->store
->get(MDS_METADATA_PREFIX
, "last_metadata", bl
);
1898 dout(1) << "Unable to load 'last_metadata'" << dendl
;
1902 bufferlist::iterator it
= bl
.begin();
1907 void MDSMonitor::count_metadata(const string
& field
, map
<string
,int> *out
)
1909 map
<mds_gid_t
,Metadata
> meta
;
1910 load_metadata(meta
);
1911 for (auto& p
: meta
) {
1912 auto q
= p
.second
.find(field
);
1913 if (q
== p
.second
.end()) {
1914 (*out
)["unknown"]++;
1916 (*out
)[q
->second
]++;
1921 void MDSMonitor::count_metadata(const string
& field
, Formatter
*f
)
1923 map
<string
,int> by_val
;
1924 count_metadata(field
, &by_val
);
1925 f
->open_object_section(field
.c_str());
1926 for (auto& p
: by_val
) {
1927 f
->dump_int(p
.first
.c_str(), p
.second
);
1932 int MDSMonitor::dump_metadata(const std::string
&who
, Formatter
*f
, ostream
& err
)
1936 mds_gid_t gid
= gid_from_arg(who
, err
);
1937 if (gid
== MDS_GID_NONE
) {
1941 map
<mds_gid_t
, Metadata
> metadata
;
1942 if (int r
= load_metadata(metadata
)) {
1943 err
<< "Unable to load 'last_metadata'";
1947 if (!metadata
.count(gid
)) {
1950 const Metadata
& m
= metadata
[gid
];
1951 for (Metadata::const_iterator p
= m
.begin(); p
!= m
.end(); ++p
) {
1952 f
->dump_string(p
->first
.c_str(), p
->second
);
1957 int MDSMonitor::print_nodes(Formatter
*f
)
1961 map
<mds_gid_t
, Metadata
> metadata
;
1962 if (int r
= load_metadata(metadata
)) {
1966 map
<string
, list
<int> > mdses
; // hostname => rank
1967 for (map
<mds_gid_t
, Metadata
>::iterator it
= metadata
.begin();
1968 it
!= metadata
.end(); ++it
) {
1969 const Metadata
& m
= it
->second
;
1970 Metadata::const_iterator hostname
= m
.find("hostname");
1971 if (hostname
== m
.end()) {
1972 // not likely though
1975 const mds_gid_t gid
= it
->first
;
1976 if (!fsmap
.gid_exists(gid
)) {
1977 dout(5) << __func__
<< ": GID " << gid
<< " not existent" << dendl
;
1980 const MDSMap::mds_info_t
& mds_info
= fsmap
.get_info_gid(gid
);
1981 // FIXME: include filesystem name with rank here
1982 mdses
[hostname
->second
].push_back(mds_info
.rank
);
1985 dump_services(f
, mdses
, "mds");
1990 * If a cluster is undersized (with respect to max_mds), then
1991 * attempt to find daemons to grow it.
1993 bool MDSMonitor::maybe_expand_cluster(std::shared_ptr
<Filesystem
> fs
)
1995 bool do_propose
= false;
1997 if (fs
->mds_map
.test_flag(CEPH_MDSMAP_DOWN
)) {
2001 while (fs
->mds_map
.get_num_in_mds() < size_t(fs
->mds_map
.get_max_mds()) &&
2002 !fs
->mds_map
.is_degraded()) {
2003 mds_rank_t mds
= mds_rank_t(0);
2005 while (fs
->mds_map
.is_in(mds
)) {
2008 mds_gid_t newgid
= pending_fsmap
.find_replacement_for({fs
->fscid
, mds
},
2009 name
, g_conf
->mon_force_standby_active
);
2010 if (newgid
== MDS_GID_NONE
) {
2014 const auto &new_info
= pending_fsmap
.get_info_gid(newgid
);
2015 dout(1) << "assigned standby " << new_info
.addr
2016 << " as mds." << mds
<< dendl
;
2018 mon
->clog
->info() << new_info
.human_name() << " assigned to "
2019 "filesystem " << fs
->mds_map
.fs_name
<< " as rank "
2020 << mds
<< " (now has " << fs
->mds_map
.get_num_in_mds() + 1
2022 pending_fsmap
.promote(newgid
, fs
, mds
);
2031 * If a daemon is laggy, and a suitable replacement
2032 * is available, fail this daemon (remove from map) and pass its
2033 * role to another daemon.
2035 void MDSMonitor::maybe_replace_gid(mds_gid_t gid
, const MDSMap::mds_info_t
& info
,
2036 bool *mds_propose
, bool *osd_propose
)
2038 assert(mds_propose
!= nullptr);
2039 assert(osd_propose
!= nullptr);
2041 const auto fscid
= pending_fsmap
.mds_roles
.at(gid
);
2043 // We will only take decisive action (replacing/removing a daemon)
2044 // if we have some indicating that some other daemon(s) are successfully
2045 // getting beacons through recently.
2046 utime_t latest_beacon
;
2047 for (const auto & i
: last_beacon
) {
2048 latest_beacon
= MAX(i
.second
.stamp
, latest_beacon
);
2050 const bool may_replace
= latest_beacon
>
2052 MAX(g_conf
->mds_beacon_interval
, g_conf
->mds_beacon_grace
* 0.5));
2055 // and is there a non-laggy standby that can take over for us?
2057 if (info
.rank
>= 0 &&
2058 info
.state
!= MDSMap::STATE_STANDBY
&&
2059 info
.state
!= MDSMap::STATE_STANDBY_REPLAY
&&
2061 !pending_fsmap
.get_filesystem(fscid
)->mds_map
.test_flag(CEPH_MDSMAP_DOWN
) &&
2062 (sgid
= pending_fsmap
.find_replacement_for({fscid
, info
.rank
}, info
.name
,
2063 g_conf
->mon_force_standby_active
)) != MDS_GID_NONE
)
2066 MDSMap::mds_info_t si
= pending_fsmap
.get_info_gid(sgid
);
2067 dout(10) << " replacing " << gid
<< " " << info
.addr
<< " mds."
2068 << info
.rank
<< "." << info
.inc
2069 << " " << ceph_mds_state_name(info
.state
)
2070 << " with " << sgid
<< "/" << si
.name
<< " " << si
.addr
<< dendl
;
2072 mon
->clog
->warn() << info
.human_name()
2073 << " is not responding, replacing it "
2074 << "as rank " << info
.rank
2075 << " with standby " << si
.human_name();
2077 // Remember what NS the old one was in
2078 const fs_cluster_id_t fscid
= pending_fsmap
.mds_roles
.at(gid
);
2080 // Remove the old one
2081 *osd_propose
|= fail_mds_gid(gid
);
2083 // Promote the replacement
2084 auto fs
= pending_fsmap
.filesystems
.at(fscid
);
2085 pending_fsmap
.promote(sgid
, fs
, info
.rank
);
2087 *mds_propose
= true;
2088 } else if ((info
.state
== MDSMap::STATE_STANDBY_REPLAY
||
2089 info
.state
== MDSMap::STATE_STANDBY
) && may_replace
) {
2090 dout(10) << " failing and removing " << gid
<< " " << info
.addr
<< " mds." << info
.rank
2091 << "." << info
.inc
<< " " << ceph_mds_state_name(info
.state
)
2093 mon
->clog
->info() << "Standby " << info
.human_name() << " is not "
2094 "responding, dropping it";
2096 *mds_propose
= true;
2097 } else if (!info
.laggy()) {
2098 dout(10) << " marking " << gid
<< " " << info
.addr
<< " mds." << info
.rank
<< "." << info
.inc
2099 << " " << ceph_mds_state_name(info
.state
)
2100 << " laggy" << dendl
;
2101 pending_fsmap
.modify_daemon(info
.global_id
, [](MDSMap::mds_info_t
*info
) {
2102 info
->laggy_since
= ceph_clock_now();
2104 *mds_propose
= true;
2108 bool MDSMonitor::maybe_promote_standby(std::shared_ptr
<Filesystem
> fs
)
2110 assert(!fs
->mds_map
.test_flag(CEPH_MDSMAP_DOWN
));
2112 bool do_propose
= false;
2114 // have a standby take over?
2115 set
<mds_rank_t
> failed
;
2116 fs
->mds_map
.get_failed_mds_set(failed
);
2117 if (!failed
.empty()) {
2118 set
<mds_rank_t
>::iterator p
= failed
.begin();
2119 while (p
!= failed
.end()) {
2120 mds_rank_t f
= *p
++;
2121 mds_gid_t sgid
= pending_fsmap
.find_replacement_for({fs
->fscid
, f
}, {},
2122 g_conf
->mon_force_standby_active
);
2124 const MDSMap::mds_info_t si
= pending_fsmap
.get_info_gid(sgid
);
2125 dout(0) << " taking over failed mds." << f
<< " with " << sgid
2126 << "/" << si
.name
<< " " << si
.addr
<< dendl
;
2127 mon
->clog
->info() << "Standby " << si
.human_name()
2128 << " assigned to filesystem " << fs
->mds_map
.fs_name
2129 << " as rank " << f
;
2131 pending_fsmap
.promote(sgid
, fs
, f
);
2136 // There were no failures to replace, so try using any available standbys
2137 // as standby-replay daemons.
2139 // Take a copy of the standby GIDs so that we can iterate over
2140 // them while perhaps-modifying standby_daemons during the loop
2141 // (if we promote anyone they are removed from standby_daemons)
2142 std::vector
<mds_gid_t
> standby_gids
;
2143 for (const auto &j
: pending_fsmap
.standby_daemons
) {
2144 standby_gids
.push_back(j
.first
);
2147 for (const auto &gid
: standby_gids
) {
2148 const auto &info
= pending_fsmap
.standby_daemons
.at(gid
);
2149 assert(info
.state
== MDSMap::STATE_STANDBY
);
2151 if (!info
.standby_replay
) {
2156 * This mds is standby but has no rank assigned.
2157 * See if we can find it somebody to shadow
2159 dout(20) << "gid " << gid
<< " is standby and following nobody" << dendl
;
2161 // standby for someone specific?
2162 if (info
.standby_for_rank
>= 0) {
2163 // The mds_info_t may or may not tell us exactly which filesystem
2164 // the standby_for_rank refers to: lookup via legacy_client_fscid
2165 mds_role_t target_role
= {
2166 info
.standby_for_fscid
== FS_CLUSTER_ID_NONE
?
2167 pending_fsmap
.legacy_client_fscid
: info
.standby_for_fscid
,
2168 info
.standby_for_rank
};
2170 // It is possible that the map contains a standby_for_fscid
2171 // that doesn't correspond to an existing filesystem, especially
2172 // if we loaded from a version with a bug (#17466)
2173 if (info
.standby_for_fscid
!= FS_CLUSTER_ID_NONE
2174 && !pending_fsmap
.filesystem_exists(info
.standby_for_fscid
)) {
2175 derr
<< "gid " << gid
<< " has invalid standby_for_fscid "
2176 << info
.standby_for_fscid
<< dendl
;
2180 // If we managed to resolve a full target role
2181 if (target_role
.fscid
!= FS_CLUSTER_ID_NONE
) {
2182 auto fs
= pending_fsmap
.get_filesystem(target_role
.fscid
);
2183 if (fs
->mds_map
.is_followable(target_role
.rank
)) {
2184 do_propose
|= try_standby_replay(
2187 fs
->mds_map
.get_info(target_role
.rank
));
2195 for (auto fs_i
: pending_fsmap
.filesystems
) {
2196 const MDSMap
&mds_map
= fs_i
.second
->mds_map
;
2197 for (auto mds_i
: mds_map
.mds_info
) {
2198 MDSMap::mds_info_t
&cand_info
= mds_i
.second
;
2199 if (cand_info
.rank
>= 0 && mds_map
.is_followable(cand_info
.rank
)) {
2200 if ((info
.standby_for_name
.length() && info
.standby_for_name
!= cand_info
.name
) ||
2201 info
.standby_for_rank
!= MDS_RANK_NONE
) {
2202 continue; // we're supposed to follow someone else
2205 if (try_standby_replay(info
, *(fs_i
.second
), cand_info
)) {
2219 void MDSMonitor::tick()
2221 // make sure mds's are still alive
2222 // ...if i am an active leader
2223 if (!is_active()) return;
2225 dout(10) << fsmap
<< dendl
;
2227 bool do_propose
= false;
2229 if (!mon
->is_leader()) return;
2231 do_propose
|= pending_fsmap
.check_health();
2233 // expand mds cluster (add new nodes to @in)?
2234 for (auto i
: pending_fsmap
.filesystems
) {
2235 do_propose
|= maybe_expand_cluster(i
.second
);
2238 const auto now
= ceph_clock_now();
2239 if (last_tick
.is_zero()) {
2243 if (now
- last_tick
> (g_conf
->mds_beacon_grace
- g_conf
->mds_beacon_interval
)) {
2244 // This case handles either local slowness (calls being delayed
2245 // for whatever reason) or cluster election slowness (a long gap
2246 // between calls while an election happened)
2247 dout(4) << __func__
<< ": resetting beacon timeouts due to mon delay "
2248 "(slow election?) of " << now
- last_tick
<< " seconds" << dendl
;
2249 for (auto &i
: last_beacon
) {
2250 i
.second
.stamp
= now
;
2256 // check beacon timestamps
2257 utime_t cutoff
= now
;
2258 cutoff
-= g_conf
->mds_beacon_grace
;
2260 // make sure last_beacon is fully populated
2261 for (const auto &p
: pending_fsmap
.mds_roles
) {
2262 auto &gid
= p
.first
;
2263 if (last_beacon
.count(gid
) == 0) {
2264 last_beacon
[gid
].stamp
= now
;
2265 last_beacon
[gid
].seq
= 0;
2269 bool propose_osdmap
= false;
2270 bool osdmap_writeable
= mon
->osdmon()->is_writeable();
2271 auto p
= last_beacon
.begin();
2272 while (p
!= last_beacon
.end()) {
2273 mds_gid_t gid
= p
->first
;
2274 auto beacon_info
= p
->second
;
2277 if (!pending_fsmap
.gid_exists(gid
)) {
2279 last_beacon
.erase(gid
);
2283 if (beacon_info
.stamp
< cutoff
) {
2284 auto &info
= pending_fsmap
.get_info_gid(gid
);
2285 dout(1) << "no beacon from mds." << info
.rank
<< "." << info
.inc
2286 << " (gid: " << gid
<< " addr: " << info
.addr
2287 << " state: " << ceph_mds_state_name(info
.state
) << ")"
2288 << " since " << beacon_info
.stamp
<< dendl
;
2289 // If the OSDMap is writeable, we can blacklist things, so we can
2290 // try failing any laggy MDS daemons. Consider each one for failure.
2291 if (osdmap_writeable
) {
2292 maybe_replace_gid(gid
, info
, &do_propose
, &propose_osdmap
);
2296 if (propose_osdmap
) {
2297 request_proposal(mon
->osdmon());
2300 for (auto i
: pending_fsmap
.filesystems
) {
2302 if (!fs
->mds_map
.test_flag(CEPH_MDSMAP_DOWN
)) {
2303 do_propose
|= maybe_promote_standby(fs
);
2313 * finfo: the would-be follower
2314 * leader_fs: the Filesystem containing the would-be leader
2315 * ainfo: the would-be leader
2317 bool MDSMonitor::try_standby_replay(
2318 const MDSMap::mds_info_t
& finfo
,
2319 const Filesystem
&leader_fs
,
2320 const MDSMap::mds_info_t
& ainfo
)
2322 // someone else already following?
2323 if (leader_fs
.has_standby_replay(ainfo
.global_id
)) {
2324 dout(20) << " mds." << ainfo
.rank
<< " already has a follower" << dendl
;
2327 // Assign the new role to the standby
2328 dout(10) << " setting to follow mds rank " << ainfo
.rank
<< dendl
;
2329 pending_fsmap
.assign_standby_replay(finfo
.global_id
, leader_fs
.fscid
, ainfo
.rank
);
2334 MDSMonitor::MDSMonitor(Monitor
*mn
, Paxos
*p
, string service_name
)
2335 : PaxosService(mn
, p
, service_name
)
2337 handlers
= FileSystemCommandHandler::load(p
);
2340 void MDSMonitor::on_restart()
2342 // Clear out the leader-specific state.
2343 last_tick
= utime_t();
2344 last_beacon
.clear();