ceph/src/mon/MgrStatMonitor.cc

   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"
  13 #include "messages/MServiceMap.h"
  14
  15 class MgrPGStatService : public MonPGStatService {
  16   PGMapDigest& digest;
  17 public:
  18   MgrPGStatService(PGMapDigest& d) : digest(d) {}
  19
  20   const pool_stat_t* get_pool_stat(int64_t poolid) const override {
  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
  28   ceph_statfs get_statfs(OSDMap& osdmap,
  29                          boost::optional<int64_t> data_pool) const override {
  30     return digest.get_statfs(osdmap, data_pool);
  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 {
  75   dout(10) << __func__ << dendl;
  76   version = 0;
  77   service_map.epoch = 1;
  78   ::encode(service_map, pending_service_map_bl, CEPH_FEATURES_ALL);
  79 }
  80
  81 void MgrStatMonitor::update_from_paxos(bool *need_bootstrap)
  82 {
  83   version = get_last_committed();
  84   dout(10) << " " << version << dendl;
  85   load_health();
  86   bufferlist bl;
  87   get_version(version, bl);
  88   if (version) {
  89     assert(bl.length());
  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;
 123   }
 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
 148 }
 149
 150 void MgrStatMonitor::create_pending()
 151 {
 152   dout(10) << " " << version << dendl;
 153   pending_digest = digest;
 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());
 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());
 170   assert(pending_service_map_bl.length());
 171   bl.append(pending_service_map_bl);
 172   put_version(t, version, bl);
 173   put_last_committed(t, version);
 174
 175   encode_health(pending_health_checks, t);
 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 {
 189   update_logger();
 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 {
 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 {
 239   return false;
 240 }
 241
 242 bool MgrStatMonitor::prepare_report(MonOpRequestRef op)
 243 {
 244   auto m = static_cast<MMonMgrReport*>(op->get_req());
 245   bufferlist bl = m->get_data();
 246   auto p = bl.begin();
 247   ::decode(pending_digest, p);
 248   pending_health_checks.swap(m->health_checks);
 249   if (m->service_map_bl.length()) {
 250     pending_service_map_bl.swap(m->service_map_bl);
 251   }
 252   dout(10) << __func__ << " " << pending_digest << ", "
 253            << pending_health_checks.checks.size() << " health checks" << dendl;
 254   return true;
 255 }
 256
 257 bool MgrStatMonitor::preprocess_getpoolstats(MonOpRequestRef op)
 258 {
 259   op->mark_pgmon_event(__func__);
 260   auto m = static_cast<MGetPoolStats*>(op->get_req());
 261   auto session = m->get_session();
 262   if (!session)
 263     return true;
 264   if (!session->is_capable("pg", MON_CAP_R)) {
 265     dout(0) << "MGetPoolStats received from entity with insufficient caps "
 266             << session->caps << dendl;
 267     return true;
 268   }
 269   if (m->fsid != mon->monmap->fsid) {
 270     dout(0) << __func__ << " on fsid "
 271             << m->fsid << " != " << mon->monmap->fsid << dendl;
 272     return true;
 273   }
 274   epoch_t ver = 0;
 275   if (mon->pgservice == get_pg_stat_service()) {
 276     ver = get_last_committed();
 277   } else {
 278     ver = mon->pgmon()->get_last_committed();
 279   }
 280   auto reply = new MGetPoolStatsReply(m->fsid, m->get_tid(), ver);
 281   for (const auto& pool_name : m->pools) {
 282     const auto pool_id = mon->osdmon()->osdmap.lookup_pg_pool_name(pool_name);
 283     if (pool_id == -ENOENT)
 284       continue;
 285     auto pool_stat = mon->pgservice->get_pool_stat(pool_id);
 286     if (!pool_stat)
 287       continue;
 288     reply->pool_stats[pool_name] = *pool_stat;
 289   }
 290   mon->send_reply(op, reply);
 291   return true;
 292 }
 293
 294 bool MgrStatMonitor::preprocess_statfs(MonOpRequestRef op)
 295 {
 296   op->mark_pgmon_event(__func__);
 297   auto statfs = static_cast<MStatfs*>(op->get_req());
 298   auto session = statfs->get_session();
 299
 300   if (!session)
 301     return true;
 302   if (!session->is_capable("pg", MON_CAP_R)) {
 303     dout(0) << "MStatfs received from entity with insufficient privileges "
 304             << session->caps << dendl;
 305     return true;
 306   }
 307   if (statfs->fsid != mon->monmap->fsid) {
 308     dout(0) << __func__ << " on fsid " << statfs->fsid
 309             << " != " << mon->monmap->fsid << dendl;
 310     return true;
 311   }
 312   dout(10) << __func__ << " " << *statfs
 313            << " from " << statfs->get_orig_source() << dendl;
 314   epoch_t ver = 0;
 315   if (mon->pgservice == get_pg_stat_service()) {
 316     ver = get_last_committed();
 317   } else {
 318     ver = mon->pgmon()->get_last_committed();
 319   }
 320   auto reply = new MStatfsReply(statfs->fsid, statfs->get_tid(), ver);
 321   reply->h.st = mon->pgservice->get_statfs(mon->osdmon()->osdmap,
 322                                            statfs->data_pool);
 323   mon->send_reply(op, reply);
 324   return true;
 325 }
 326
 327 void MgrStatMonitor::check_sub(Subscription *sub)
 328 {
 329   const auto epoch = mon->monmap->get_epoch();
 330   dout(10) << __func__
 331            << " next " << sub->next
 332            << " have " << epoch << dendl;
 333   if (sub->next <= service_map.epoch) {
 334     auto m = new MServiceMap(service_map);
 335     sub->session->con->send_message(m);
 336     if (sub->onetime) {
 337       mon->with_session_map([this, sub](MonSessionMap& session_map) {
 338           session_map.remove_sub(sub);
 339         });
 340     } else {
 341       sub->next = epoch + 1;
 342     }
 343   }
 344 }
 345
 346 void MgrStatMonitor::check_subs()
 347 {
 348   dout(10) << __func__ << dendl;
 349   if (!service_map.epoch) {
 350     return;
 351   }
 352   auto subs = mon->session_map.subs.find("servicemap");
 353   if (subs == mon->session_map.subs.end()) {
 354     return;
 355   }
 356   auto p = subs->second->begin();
 357   while (!p.end()) {
 358     auto sub = *p;
 359     ++p;
 360     check_sub(sub);
 361   }
 362 }