[ceph.git] / ceph / src / mon / MgrStatMonitor.cc

// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab

#include "MgrStatMonitor.h"
#include "mon/OSDMonitor.h"
#include "mon/PGMap.h"
#include "mon/PGMonitor.h"
#include "messages/MGetPoolStats.h"
#include "messages/MGetPoolStatsReply.h"
#include "messages/MMonMgrReport.h"
#include "messages/MStatfs.h"
#include "messages/MStatfsReply.h"
#include "messages/MServiceMap.h"

class MgrPGStatService : public MonPGStatService {
  PGMapDigest& digest;
public:
  MgrPGStatService(PGMapDigest& d) : digest(d) {}

  const pool_stat_t* get_pool_stat(int64_t poolid) const override {
    auto i = digest.pg_pool_sum.find(poolid);
    if (i != digest.pg_pool_sum.end()) {
      return &i->second;
    }
    return nullptr;
  }

  ceph_statfs get_statfs(OSDMap& osdmap,
			 boost::optional<int64_t> data_pool) const override {
    return digest.get_statfs(osdmap, data_pool);
  }

  void print_summary(Formatter *f, ostream *out) const override {
    digest.print_summary(f, out);
  }
  void dump_info(Formatter *f) const override {
    digest.dump(f);
  }
  void dump_fs_stats(stringstream *ss,
		     Formatter *f,
		     bool verbose) const override {
    digest.dump_fs_stats(ss, f, verbose);
  }
  void dump_pool_stats(const OSDMap& osdm, stringstream *ss, Formatter *f,
		       bool verbose) const override {
    digest.dump_pool_stats_full(osdm, ss, f, verbose);
  }
};


#define dout_subsys ceph_subsys_mon
#undef dout_prefix
#define dout_prefix _prefix(_dout, mon)
static ostream& _prefix(std::ostream *_dout, Monitor *mon) {
  return *_dout << "mon." << mon->name << "@" << mon->rank
		<< "(" << mon->get_state_name()
		<< ").mgrstat ";
}

MgrStatMonitor::MgrStatMonitor(Monitor *mn, Paxos *p, const string& service_name)
  : PaxosService(mn, p, service_name),
    pgservice(new MgrPGStatService(digest))
{
}

MgrStatMonitor::~MgrStatMonitor() = default;

MonPGStatService *MgrStatMonitor::get_pg_stat_service()
{
  return pgservice.get();
}

void MgrStatMonitor::create_initial()
{
  dout(10) << __func__ << dendl;
  version = 0;
  service_map.epoch = 1;
  ::encode(service_map, pending_service_map_bl, CEPH_FEATURES_ALL);
}

void MgrStatMonitor::update_from_paxos(bool *need_bootstrap)
{
  version = get_last_committed();
  dout(10) << " " << version << dendl;
  load_health();
  bufferlist bl;
  get_version(version, bl);
  if (version) {
    assert(bl.length());
    try {
      auto p = bl.begin();
      ::decode(digest, p);
      ::decode(service_map, p);
      dout(10) << __func__ << " v" << version
	       << " service_map e" << service_map.epoch << dendl;
    }
    catch (buffer::error& e) {
      derr << "failed to decode mgrstat state; luminous dev version?" << dendl;
    }
  }
  check_subs();
  update_logger();
}

void MgrStatMonitor::update_logger()
{
  dout(20) << __func__ << dendl;
  if (mon->osdmon()->osdmap.require_osd_release < CEPH_RELEASE_LUMINOUS) {
    dout(20) << "yielding cluster perfcounter updates to pgmon" << dendl;
    return;
  }

  mon->cluster_logger->set(l_cluster_osd_bytes, digest.osd_sum.kb * 1024ull);
  mon->cluster_logger->set(l_cluster_osd_bytes_used,
                           digest.osd_sum.kb_used * 1024ull);
  mon->cluster_logger->set(l_cluster_osd_bytes_avail,
                           digest.osd_sum.kb_avail * 1024ull);

  mon->cluster_logger->set(l_cluster_num_pool, digest.pg_pool_sum.size());
  uint64_t num_pg = 0;
  for (auto i : digest.num_pg_by_pool) {
    num_pg += i.second;
  }
  mon->cluster_logger->set(l_cluster_num_pg, num_pg);

  unsigned active = 0, active_clean = 0, peering = 0;
  for (auto p = digest.num_pg_by_state.begin();
       p != digest.num_pg_by_state.end();
       ++p) {
    if (p->first & PG_STATE_ACTIVE) {
      active += p->second;
      if (p->first & PG_STATE_CLEAN)
	active_clean += p->second;
    }
    if (p->first & PG_STATE_PEERING)
      peering += p->second;
  }
  mon->cluster_logger->set(l_cluster_num_pg_active_clean, active_clean);
  mon->cluster_logger->set(l_cluster_num_pg_active, active);
  mon->cluster_logger->set(l_cluster_num_pg_peering, peering);

  mon->cluster_logger->set(l_cluster_num_object, digest.pg_sum.stats.sum.num_objects);
  mon->cluster_logger->set(l_cluster_num_object_degraded, digest.pg_sum.stats.sum.num_objects_degraded);
  mon->cluster_logger->set(l_cluster_num_object_misplaced, digest.pg_sum.stats.sum.num_objects_misplaced);
  mon->cluster_logger->set(l_cluster_num_object_unfound, digest.pg_sum.stats.sum.num_objects_unfound);
  mon->cluster_logger->set(l_cluster_num_bytes, digest.pg_sum.stats.sum.num_bytes);

}

void MgrStatMonitor::create_pending()
{
  dout(10) << " " << version << dendl;
  pending_digest = digest;
  pending_health_checks = get_health_checks();
  pending_service_map_bl.clear();
  ::encode(service_map, pending_service_map_bl, mon->get_quorum_con_features());
}

void MgrStatMonitor::encode_pending(MonitorDBStore::TransactionRef t)
{
  ++version;
  if (version < mon->pgmon()->get_last_committed()) {
    // fast-forward to pgmon version to ensure clients don't see a
    // jump back in time for MGetPoolStats and MStatFs.
    version = mon->pgmon()->get_last_committed() + 1;
  }
  dout(10) << " " << version << dendl;
  bufferlist bl;
  ::encode(pending_digest, bl, mon->get_quorum_con_features());
  assert(pending_service_map_bl.length());
  bl.append(pending_service_map_bl);
  put_version(t, version, bl);
  put_last_committed(t, version);

  encode_health(pending_health_checks, t);
}

version_t MgrStatMonitor::get_trim_to()
{
  // we don't actually need *any* old states, but keep a few.
  if (version > 5) {
    return version - 5;
  }
  return 0;
}

void MgrStatMonitor::on_active()
{
  update_logger();
}

void MgrStatMonitor::get_health(list<pair<health_status_t,string> >& summary,
				list<pair<health_status_t,string> > *detail,
				CephContext *cct) const
{
}

void MgrStatMonitor::tick()
{
}

void MgrStatMonitor::print_summary(Formatter *f, std::ostream *ss) const
{
  pgservice->print_summary(f, ss);
}

bool MgrStatMonitor::preprocess_query(MonOpRequestRef op)
{
  auto m = static_cast<PaxosServiceMessage*>(op->get_req());
  switch (m->get_type()) {
  case CEPH_MSG_STATFS:
    return preprocess_statfs(op);
  case MSG_MON_MGR_REPORT:
    return preprocess_report(op);
  case MSG_GETPOOLSTATS:
    return preprocess_getpoolstats(op);
  default:
    mon->no_reply(op);
    derr << "Unhandled message type " << m->get_type() << dendl;
    return true;
  }
}

bool MgrStatMonitor::prepare_update(MonOpRequestRef op)
{
  auto m = static_cast<PaxosServiceMessage*>(op->get_req());
  switch (m->get_type()) {
  case MSG_MON_MGR_REPORT:
    return prepare_report(op);
  default:
    mon->no_reply(op);
    derr << "Unhandled message type " << m->get_type() << dendl;
    return true;
  }
}

bool MgrStatMonitor::preprocess_report(MonOpRequestRef op)
{
  mon->no_reply(op);
  return false;
}

bool MgrStatMonitor::prepare_report(MonOpRequestRef op)
{
  auto m = static_cast<MMonMgrReport*>(op->get_req());
  bufferlist bl = m->get_data();
  auto p = bl.begin();
  ::decode(pending_digest, p);
  pending_health_checks.swap(m->health_checks);
  if (m->service_map_bl.length()) {
    pending_service_map_bl.swap(m->service_map_bl);
  }
  dout(10) << __func__ << " " << pending_digest << ", "
	   << pending_health_checks.checks.size() << " health checks" << dendl;
  return true;
}

bool MgrStatMonitor::preprocess_getpoolstats(MonOpRequestRef op)
{
  op->mark_pgmon_event(__func__);
  auto m = static_cast<MGetPoolStats*>(op->get_req());
  auto session = m->get_session();
  if (!session)
    return true;
  if (!session->is_capable("pg", MON_CAP_R)) {
    dout(0) << "MGetPoolStats received from entity with insufficient caps "
            << session->caps << dendl;
    return true;
  }
  if (m->fsid != mon->monmap->fsid) {
    dout(0) << __func__ << " on fsid "
	    << m->fsid << " != " << mon->monmap->fsid << dendl;
    return true;
  }
  epoch_t ver = 0;
  if (mon->pgservice == get_pg_stat_service()) {
    ver = get_last_committed();
  } else {
    ver = mon->pgmon()->get_last_committed();
  }
  auto reply = new MGetPoolStatsReply(m->fsid, m->get_tid(), ver);
  for (const auto& pool_name : m->pools) {
    const auto pool_id = mon->osdmon()->osdmap.lookup_pg_pool_name(pool_name);
    if (pool_id == -ENOENT)
      continue;
    auto pool_stat = mon->pgservice->get_pool_stat(pool_id);
    if (!pool_stat)
      continue;
    reply->pool_stats[pool_name] = *pool_stat;
  }
  mon->send_reply(op, reply);
  return true;
}

bool MgrStatMonitor::preprocess_statfs(MonOpRequestRef op)
{
  op->mark_pgmon_event(__func__);
  auto statfs = static_cast<MStatfs*>(op->get_req());
  auto session = statfs->get_session();

  if (!session)
    return true;
  if (!session->is_capable("pg", MON_CAP_R)) {
    dout(0) << "MStatfs received from entity with insufficient privileges "
            << session->caps << dendl;
    return true;
  }
  if (statfs->fsid != mon->monmap->fsid) {
    dout(0) << __func__ << " on fsid " << statfs->fsid
            << " != " << mon->monmap->fsid << dendl;
    return true;
  }
  dout(10) << __func__ << " " << *statfs
           << " from " << statfs->get_orig_source() << dendl;
  epoch_t ver = 0;
  if (mon->pgservice == get_pg_stat_service()) {
    ver = get_last_committed();
  } else {
    ver = mon->pgmon()->get_last_committed();
  }
  auto reply = new MStatfsReply(statfs->fsid, statfs->get_tid(), ver);
  reply->h.st = mon->pgservice->get_statfs(mon->osdmon()->osdmap,
					   statfs->data_pool);
  mon->send_reply(op, reply);
  return true;
}

void MgrStatMonitor::check_sub(Subscription *sub)
{
  const auto epoch = mon->monmap->get_epoch();
  dout(10) << __func__
	   << " next " << sub->next
	   << " have " << epoch << dendl;
  if (sub->next <= service_map.epoch) {
    auto m = new MServiceMap(service_map);
    sub->session->con->send_message(m);
    if (sub->onetime) {
      mon->with_session_map([this, sub](MonSessionMap& session_map) {
	  session_map.remove_sub(sub);
	});
    } else {
      sub->next = epoch + 1;
    }
  }
}

void MgrStatMonitor::check_subs()
{
  dout(10) << __func__ << dendl;
  if (!service_map.epoch) {
    return;
  }
  auto subs = mon->session_map.subs.find("servicemap");
  if (subs == mon->session_map.subs.end()) {
    return;
  }
  auto p = subs->second->begin();
  while (!p.end()) {
    auto sub = *p;
    ++p;
    check_sub(sub);
  }
}
Commit	Line	Data
31f18b77 FG	1	// -- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t --
	2	// vim: ts=8 sw=2 smarttab
	3
	4	#include "MgrStatMonitor.h"
	5	#include "mon/OSDMonitor.h"
	6	#include "mon/PGMap.h"
	7	#include "mon/PGMonitor.h"
	8	#include "messages/MGetPoolStats.h"
	9	#include "messages/MGetPoolStatsReply.h"
	10	#include "messages/MMonMgrReport.h"
	11	#include "messages/MStatfs.h"
	12	#include "messages/MStatfsReply.h"
224ce89b	13	#include "messages/MServiceMap.h"
31f18b77 FG	14
	15	class MgrPGStatService : public MonPGStatService {
	16	PGMapDigest& digest;
	17	public:
	18	MgrPGStatService(PGMapDigest& d) : digest(d) {}
	19
d2e6a577	20	const pool_stat_t* get_pool_stat(int64_t poolid) const override {
31f18b77 FG	21	auto i = digest.pg_pool_sum.find(poolid);
	22	if (i != digest.pg_pool_sum.end()) {
	23	return &i->second;
	24	}
	25	return nullptr;
	26	}
	27
d2e6a577 FG	28	ceph_statfs get_statfs(OSDMap& osdmap,
	29	boost::optional<int64_t> data_pool) const override {
	30	return digest.get_statfs(osdmap, data_pool);
31f18b77 FG	31	}
	32
	33	void print_summary(Formatter f, ostream out) const override {
	34	digest.print_summary(f, out);
	35	}
	36	void dump_info(Formatter *f) const override {
	37	digest.dump(f);
	38	}
	39	void dump_fs_stats(stringstream *ss,
	40	Formatter *f,
	41	bool verbose) const override {
	42	digest.dump_fs_stats(ss, f, verbose);
	43	}
	44	void dump_pool_stats(const OSDMap& osdm, stringstream ss, Formatter f,
	45	bool verbose) const override {
	46	digest.dump_pool_stats_full(osdm, ss, f, verbose);
	47	}
	48	};
	49
	50
	51	#define dout_subsys ceph_subsys_mon
	52	#undef dout_prefix
	53	#define dout_prefix _prefix(_dout, mon)
	54	static ostream& _prefix(std::ostream _dout, Monitor mon) {
	55	return *_dout << "mon." << mon->name << "@" << mon->rank
	56	<< "(" << mon->get_state_name()
	57	<< ").mgrstat ";
	58	}
	59
	60	MgrStatMonitor::MgrStatMonitor(Monitor mn, Paxos p, const string& service_name)
	61	: PaxosService(mn, p, service_name),
	62	pgservice(new MgrPGStatService(digest))
	63	{
	64	}
	65
	66	MgrStatMonitor::~MgrStatMonitor() = default;
	67
	68	MonPGStatService *MgrStatMonitor::get_pg_stat_service()
	69	{
	70	return pgservice.get();
	71	}
	72
	73	void MgrStatMonitor::create_initial()
	74	{
224ce89b	75	dout(10) << __func__ << dendl;
31f18b77	76	version = 0;
224ce89b WB	77	service_map.epoch = 1;
224ce89b WB	78	::encode(service_map, pending_service_map_bl, CEPH_FEATURES_ALL);
31f18b77 FG	79	}
	80
	81	void MgrStatMonitor::update_from_paxos(bool *need_bootstrap)
	82	{
	83	version = get_last_committed();
	84	dout(10) << " " << version << dendl;
224ce89b	85	load_health();
31f18b77 FG	86	bufferlist bl;
	87	get_version(version, bl);
	88	if (version) {
	89	assert(bl.length());
224ce89b WB	90	try {
	91	auto p = bl.begin();
	92	::decode(digest, p);
	93	::decode(service_map, p);
	94	dout(10) << __func__ << " v" << version
	95	<< " service_map e" << service_map.epoch << dendl;
	96	}
	97	catch (buffer::error& e) {
	98	derr << "failed to decode mgrstat state; luminous dev version?" << dendl;
	99	}
	100	}
	101	check_subs();
	102	update_logger();
	103	}
	104
	105	void MgrStatMonitor::update_logger()
	106	{
	107	dout(20) << __func__ << dendl;
	108	if (mon->osdmon()->osdmap.require_osd_release < CEPH_RELEASE_LUMINOUS) {
	109	dout(20) << "yielding cluster perfcounter updates to pgmon" << dendl;
	110	return;
	111	}
	112
	113	mon->cluster_logger->set(l_cluster_osd_bytes, digest.osd_sum.kb * 1024ull);
	114	mon->cluster_logger->set(l_cluster_osd_bytes_used,
	115	digest.osd_sum.kb_used * 1024ull);
	116	mon->cluster_logger->set(l_cluster_osd_bytes_avail,
	117	digest.osd_sum.kb_avail * 1024ull);
	118
	119	mon->cluster_logger->set(l_cluster_num_pool, digest.pg_pool_sum.size());
	120	uint64_t num_pg = 0;
	121	for (auto i : digest.num_pg_by_pool) {
	122	num_pg += i.second;
31f18b77	123	}
224ce89b WB	124	mon->cluster_logger->set(l_cluster_num_pg, num_pg);
	125
	126	unsigned active = 0, active_clean = 0, peering = 0;
	127	for (auto p = digest.num_pg_by_state.begin();
	128	p != digest.num_pg_by_state.end();
	129	++p) {
	130	if (p->first & PG_STATE_ACTIVE) {
	131	active += p->second;
	132	if (p->first & PG_STATE_CLEAN)
	133	active_clean += p->second;
	134	}
	135	if (p->first & PG_STATE_PEERING)
	136	peering += p->second;
	137	}
	138	mon->cluster_logger->set(l_cluster_num_pg_active_clean, active_clean);
	139	mon->cluster_logger->set(l_cluster_num_pg_active, active);
	140	mon->cluster_logger->set(l_cluster_num_pg_peering, peering);
	141
	142	mon->cluster_logger->set(l_cluster_num_object, digest.pg_sum.stats.sum.num_objects);
	143	mon->cluster_logger->set(l_cluster_num_object_degraded, digest.pg_sum.stats.sum.num_objects_degraded);
	144	mon->cluster_logger->set(l_cluster_num_object_misplaced, digest.pg_sum.stats.sum.num_objects_misplaced);
	145	mon->cluster_logger->set(l_cluster_num_object_unfound, digest.pg_sum.stats.sum.num_objects_unfound);
	146	mon->cluster_logger->set(l_cluster_num_bytes, digest.pg_sum.stats.sum.num_bytes);
	147
31f18b77 FG	148	}
	149
	150	void MgrStatMonitor::create_pending()
	151	{
	152	dout(10) << " " << version << dendl;
	153	pending_digest = digest;
224ce89b WB	154	pending_health_checks = get_health_checks();
	155	pending_service_map_bl.clear();
	156	::encode(service_map, pending_service_map_bl, mon->get_quorum_con_features());
31f18b77 FG	157	}
	158
	159	void MgrStatMonitor::encode_pending(MonitorDBStore::TransactionRef t)
	160	{
	161	++version;
	162	if (version < mon->pgmon()->get_last_committed()) {
	163	// fast-forward to pgmon version to ensure clients don't see a
	164	// jump back in time for MGetPoolStats and MStatFs.
	165	version = mon->pgmon()->get_last_committed() + 1;
	166	}
	167	dout(10) << " " << version << dendl;
	168	bufferlist bl;
	169	::encode(pending_digest, bl, mon->get_quorum_con_features());
224ce89b WB	170	assert(pending_service_map_bl.length());
224ce89b WB	171	bl.append(pending_service_map_bl);
31f18b77 FG	172	put_version(t, version, bl);
31f18b77 FG	173	put_last_committed(t, version);
224ce89b WB	174
224ce89b WB	175	encode_health(pending_health_checks, t);
31f18b77 FG	176	}
	177
	178	version_t MgrStatMonitor::get_trim_to()
	179	{
	180	// we don't actually need any old states, but keep a few.
	181	if (version > 5) {
	182	return version - 5;
	183	}
	184	return 0;
	185	}
	186
	187	void MgrStatMonitor::on_active()
	188	{
224ce89b	189	update_logger();
31f18b77 FG	190	}
	191
	192	void MgrStatMonitor::get_health(list<pair<health_status_t,string> >& summary,
	193	list<pair<health_status_t,string> > *detail,
	194	CephContext *cct) const
	195	{
31f18b77 FG	196	}
	197
	198	void MgrStatMonitor::tick()
	199	{
	200	}
	201
	202	void MgrStatMonitor::print_summary(Formatter f, std::ostream ss) const
	203	{
	204	pgservice->print_summary(f, ss);
	205	}
	206
	207	bool MgrStatMonitor::preprocess_query(MonOpRequestRef op)
	208	{
	209	auto m = static_cast<PaxosServiceMessage*>(op->get_req());
	210	switch (m->get_type()) {
	211	case CEPH_MSG_STATFS:
	212	return preprocess_statfs(op);
	213	case MSG_MON_MGR_REPORT:
	214	return preprocess_report(op);
	215	case MSG_GETPOOLSTATS:
	216	return preprocess_getpoolstats(op);
	217	default:
	218	mon->no_reply(op);
	219	derr << "Unhandled message type " << m->get_type() << dendl;
	220	return true;
	221	}
	222	}
	223
	224	bool MgrStatMonitor::prepare_update(MonOpRequestRef op)
	225	{
	226	auto m = static_cast<PaxosServiceMessage*>(op->get_req());
	227	switch (m->get_type()) {
	228	case MSG_MON_MGR_REPORT:
	229	return prepare_report(op);
	230	default:
	231	mon->no_reply(op);
	232	derr << "Unhandled message type " << m->get_type() << dendl;
	233	return true;
	234	}
	235	}
	236
	237	bool MgrStatMonitor::preprocess_report(MonOpRequestRef op)
	238	{
94b18763	239	mon->no_reply(op);
31f18b77 FG	240	return false;
	241	}
	242
	243	bool MgrStatMonitor::prepare_report(MonOpRequestRef op)
	244	{
	245	auto m = static_cast<MMonMgrReport*>(op->get_req());
	246	bufferlist bl = m->get_data();
	247	auto p = bl.begin();
	248	::decode(pending_digest, p);
224ce89b WB	249	pending_health_checks.swap(m->health_checks);
	250	if (m->service_map_bl.length()) {
	251	pending_service_map_bl.swap(m->service_map_bl);
	252	}
	253	dout(10) << __func__ << " " << pending_digest << ", "
	254	<< pending_health_checks.checks.size() << " health checks" << dendl;
31f18b77 FG	255	return true;
	256	}
	257
	258	bool MgrStatMonitor::preprocess_getpoolstats(MonOpRequestRef op)
	259	{
	260	op->mark_pgmon_event(__func__);
	261	auto m = static_cast<MGetPoolStats*>(op->get_req());
	262	auto session = m->get_session();
	263	if (!session)
	264	return true;
	265	if (!session->is_capable("pg", MON_CAP_R)) {
	266	dout(0) << "MGetPoolStats received from entity with insufficient caps "
	267	<< session->caps << dendl;
	268	return true;
	269	}
	270	if (m->fsid != mon->monmap->fsid) {
	271	dout(0) << __func__ << " on fsid "
	272	<< m->fsid << " != " << mon->monmap->fsid << dendl;
	273	return true;
	274	}
	275	epoch_t ver = 0;
	276	if (mon->pgservice == get_pg_stat_service()) {
	277	ver = get_last_committed();
	278	} else {
	279	ver = mon->pgmon()->get_last_committed();
	280	}
	281	auto reply = new MGetPoolStatsReply(m->fsid, m->get_tid(), ver);
	282	for (const auto& pool_name : m->pools) {
	283	const auto pool_id = mon->osdmon()->osdmap.lookup_pg_pool_name(pool_name);
	284	if (pool_id == -ENOENT)
	285	continue;
	286	auto pool_stat = mon->pgservice->get_pool_stat(pool_id);
	287	if (!pool_stat)
	288	continue;
	289	reply->pool_stats[pool_name] = *pool_stat;
	290	}
	291	mon->send_reply(op, reply);
	292	return true;
	293	}
	294
	295	bool MgrStatMonitor::preprocess_statfs(MonOpRequestRef op)
	296	{
	297	op->mark_pgmon_event(__func__);
	298	auto statfs = static_cast<MStatfs*>(op->get_req());
	299	auto session = statfs->get_session();
d2e6a577	300
31f18b77 FG	301	if (!session)
	302	return true;
	303	if (!session->is_capable("pg", MON_CAP_R)) {
	304	dout(0) << "MStatfs received from entity with insufficient privileges "
	305	<< session->caps << dendl;
	306	return true;
	307	}
	308	if (statfs->fsid != mon->monmap->fsid) {
	309	dout(0) << __func__ << " on fsid " << statfs->fsid
	310	<< " != " << mon->monmap->fsid << dendl;
	311	return true;
	312	}
	313	dout(10) << __func__ << " " << *statfs
	314	<< " from " << statfs->get_orig_source() << dendl;
	315	epoch_t ver = 0;
	316	if (mon->pgservice == get_pg_stat_service()) {
	317	ver = get_last_committed();
	318	} else {
	319	ver = mon->pgmon()->get_last_committed();
	320	}
	321	auto reply = new MStatfsReply(statfs->fsid, statfs->get_tid(), ver);
d2e6a577 FG	322	reply->h.st = mon->pgservice->get_statfs(mon->osdmon()->osdmap,
d2e6a577 FG	323	statfs->data_pool);
31f18b77 FG	324	mon->send_reply(op, reply);
	325	return true;
	326	}
224ce89b WB	327
	328	void MgrStatMonitor::check_sub(Subscription *sub)
	329	{
	330	const auto epoch = mon->monmap->get_epoch();
	331	dout(10) << __func__
	332	<< " next " << sub->next
	333	<< " have " << epoch << dendl;
	334	if (sub->next <= service_map.epoch) {
	335	auto m = new MServiceMap(service_map);
	336	sub->session->con->send_message(m);
	337	if (sub->onetime) {
	338	mon->with_session_map([this, sub](MonSessionMap& session_map) {
	339	session_map.remove_sub(sub);
	340	});
	341	} else {
	342	sub->next = epoch + 1;
	343	}
	344	}
	345	}
	346
	347	void MgrStatMonitor::check_subs()
	348	{
	349	dout(10) << __func__ << dendl;
	350	if (!service_map.epoch) {
	351	return;
	352	}
	353	auto subs = mon->session_map.subs.find("servicemap");
	354	if (subs == mon->session_map.subs.end()) {
	355	return;
	356	}
	357	auto p = subs->second->begin();
	358	while (!p.end()) {
	359	auto sub = *p;
	360	++p;
	361	check_sub(sub);
	362	}
	363	}