X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Fmon%2FOSDMonitor.h;fp=src%2Fceph%2Fsrc%2Fmon%2FOSDMonitor.h;h=9767f10035780898e1f6ac141e08791b22082e50;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git

diff --git a/src/ceph/src/mon/OSDMonitor.h b/src/ceph/src/mon/OSDMonitor.h
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+++ b/src/ceph/src/mon/OSDMonitor.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ * Copyright (C) 2013,2014 Cloudwatt <libre.licensing@cloudwatt.com>
+ *
+ * Author: Loic Dachary <loic@dachary.org>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software 
+ * Foundation.  See file COPYING.
+ * 
+ */
+
+/* Object Store Device (OSD) Monitor
+ */
+
+#ifndef CEPH_OSDMONITOR_H
+#define CEPH_OSDMONITOR_H
+
+#include <map>
+#include <set>
+using namespace std;
+
+#include "include/types.h"
+#include "common/simple_cache.hpp"
+#include "msg/Messenger.h"
+
+#include "osd/OSDMap.h"
+#include "osd/OSDMapMapping.h"
+
+#include "CreatingPGs.h"
+#include "PaxosService.h"
+
+class Monitor;
+class PGMap;
+class MonSession;
+class MOSDMap;
+
+#include "erasure-code/ErasureCodeInterface.h"
+#include "mon/MonOpRequest.h"
+
+/// information about a particular peer's failure reports for one osd
+struct failure_reporter_t {
+  utime_t failed_since;     ///< when they think it failed
+  MonOpRequestRef op;       ///< failure op request
+
+  failure_reporter_t() {}
+  explicit failure_reporter_t(utime_t s) : failed_since(s) {}
+  ~failure_reporter_t() { }
+};
+
+/// information about all failure reports for one osd
+struct failure_info_t {
+  map<int, failure_reporter_t> reporters;  ///< reporter -> failed_since etc
+  utime_t max_failed_since;                ///< most recent failed_since
+
+  failure_info_t() {}
+
+  utime_t get_failed_since() {
+    if (max_failed_since == utime_t() && !reporters.empty()) {
+      // the old max must have canceled; recalculate.
+      for (map<int, failure_reporter_t>::iterator p = reporters.begin();
+	   p != reporters.end();
+	   ++p)
+	if (p->second.failed_since > max_failed_since)
+	  max_failed_since = p->second.failed_since;
+    }
+    return max_failed_since;
+  }
+
+  // set the message for the latest report.  return any old op request we had,
+  // if any, so we can discard it.
+  MonOpRequestRef add_report(int who, utime_t failed_since,
+			     MonOpRequestRef op) {
+    map<int, failure_reporter_t>::iterator p = reporters.find(who);
+    if (p == reporters.end()) {
+      if (max_failed_since < failed_since)
+	max_failed_since = failed_since;
+      p = reporters.insert(map<int, failure_reporter_t>::value_type(who, failure_reporter_t(failed_since))).first;
+    }
+
+    MonOpRequestRef ret = p->second.op;
+    p->second.op = op;
+    return ret;
+  }
+
+  void take_report_messages(list<MonOpRequestRef>& ls) {
+    for (map<int, failure_reporter_t>::iterator p = reporters.begin();
+	 p != reporters.end();
+	 ++p) {
+      if (p->second.op) {
+	ls.push_back(p->second.op);
+        p->second.op.reset();
+      }
+    }
+  }
+
+  MonOpRequestRef cancel_report(int who) {
+    map<int, failure_reporter_t>::iterator p = reporters.find(who);
+    if (p == reporters.end())
+      return MonOpRequestRef();
+    MonOpRequestRef ret = p->second.op;
+    reporters.erase(p);
+    return ret;
+  }
+};
+
+
+class LastEpochClean {
+  struct Lec {
+    vector<epoch_t> epoch_by_pg;
+    ps_t next_missing = 0;
+    epoch_t floor = std::numeric_limits<epoch_t>::max();
+    void report(ps_t pg, epoch_t last_epoch_clean);
+  };
+  std::map<uint64_t, Lec> report_by_pool;
+public:
+  void report(const pg_t& pg, epoch_t last_epoch_clean);
+  void remove_pool(uint64_t pool);
+  epoch_t get_lower_bound(const OSDMap& latest) const;
+};
+
+
+class OSDMonitor : public PaxosService {
+  CephContext *cct;
+
+public:
+  OSDMap osdmap;
+
+  // [leader]
+  OSDMap::Incremental pending_inc;
+  map<int, bufferlist> pending_metadata;
+  set<int>             pending_metadata_rm;
+  map<int, failure_info_t> failure_info;
+  map<int,utime_t>    down_pending_out;  // osd down -> out
+
+  map<int,double> osd_weight;
+
+  SimpleLRU<version_t, bufferlist> inc_osd_cache;
+  SimpleLRU<version_t, bufferlist> full_osd_cache;
+
+  bool check_failures(utime_t now);
+  bool check_failure(utime_t now, int target_osd, failure_info_t& fi);
+  void force_failure(int target_osd, int by);
+
+  // the time of last msg(MSG_ALIVE and MSG_PGTEMP) proposed without delay
+  utime_t last_attempted_minwait_time;
+
+  bool _have_pending_crush();
+  CrushWrapper &_get_stable_crush();
+  void _get_pending_crush(CrushWrapper& newcrush);
+
+  enum FastReadType {
+    FAST_READ_OFF,
+    FAST_READ_ON,
+    FAST_READ_DEFAULT
+  };
+
+  // svc
+public:  
+  void create_initial() override;
+  void get_store_prefixes(std::set<string>& s) override;
+
+private:
+  void update_from_paxos(bool *need_bootstrap) override;
+  void create_pending() override;  // prepare a new pending
+  void encode_pending(MonitorDBStore::TransactionRef t) override;
+  void on_active() override;
+  void on_restart() override;
+  void on_shutdown() override;
+  /**
+   * we haven't delegated full version stashing to paxosservice for some time
+   * now, making this function useless in current context.
+   */
+  void encode_full(MonitorDBStore::TransactionRef t) override { }
+  /**
+   * do not let paxosservice periodically stash full osdmaps, or we will break our
+   * locally-managed full maps.  (update_from_paxos loads the latest and writes them
+   * out going forward from there, but if we just synced that may mean we skip some.)
+   */
+  bool should_stash_full() override {
+    return false;
+  }
+
+  /**
+   * hook into trim to include the oldest full map in the trim transaction
+   *
+   * This ensures that anyone post-sync will have enough to rebuild their
+   * full osdmaps.
+   */
+  void encode_trim_extra(MonitorDBStore::TransactionRef tx, version_t first) override;
+
+  void update_msgr_features();
+  int check_cluster_features(uint64_t features, stringstream &ss);
+  /**
+   * check if the cluster supports the features required by the
+   * given crush map. Outputs the daemons which don't support it
+   * to the stringstream.
+   *
+   * @returns true if the map is passable, false otherwise
+   */
+  bool validate_crush_against_features(const CrushWrapper *newcrush,
+                                      stringstream &ss);
+  void check_osdmap_subs();
+  void share_map_with_random_osd();
+
+  Mutex prime_pg_temp_lock = {"OSDMonitor::prime_pg_temp_lock"};
+  struct PrimeTempJob : public ParallelPGMapper::Job {
+    OSDMonitor *osdmon;
+    PrimeTempJob(const OSDMap& om, OSDMonitor *m)
+      : ParallelPGMapper::Job(&om), osdmon(m) {}
+    void process(int64_t pool, unsigned ps_begin, unsigned ps_end) override {
+      for (unsigned ps = ps_begin; ps < ps_end; ++ps) {
+	pg_t pgid(ps, pool);
+	osdmon->prime_pg_temp(*osdmap, pgid);
+      }
+    }
+    void complete() override {}
+  };
+  void maybe_prime_pg_temp();
+  void prime_pg_temp(const OSDMap& next, pg_t pgid);
+
+  ParallelPGMapper mapper;                        ///< for background pg work
+  OSDMapMapping mapping;                          ///< pg <-> osd mappings
+  unique_ptr<ParallelPGMapper::Job> mapping_job;  ///< background mapping job
+  void start_mapping();
+
+  void update_logger();
+
+  void handle_query(PaxosServiceMessage *m);
+  bool preprocess_query(MonOpRequestRef op) override;  // true if processed.
+  bool prepare_update(MonOpRequestRef op) override;
+  bool should_propose(double &delay) override;
+
+  version_t get_trim_to() override;
+
+  bool can_mark_down(int o);
+  bool can_mark_up(int o);
+  bool can_mark_out(int o);
+  bool can_mark_in(int o);
+
+  // ...
+  MOSDMap *build_latest_full();
+  MOSDMap *build_incremental(epoch_t first, epoch_t last);
+  void send_full(MonOpRequestRef op);
+  void send_incremental(MonOpRequestRef op, epoch_t first);
+public:
+  // @param req an optional op request, if the osdmaps are replies to it. so
+  //            @c Monitor::send_reply() can mark_event with it.
+  void send_incremental(epoch_t first, MonSession *session, bool onetime,
+			MonOpRequestRef req = MonOpRequestRef());
+
+private:
+  void print_utilization(ostream &out, Formatter *f, bool tree) const;
+
+  bool check_source(PaxosServiceMessage *m, uuid_d fsid);
+ 
+  bool preprocess_get_osdmap(MonOpRequestRef op);
+
+  bool preprocess_mark_me_down(MonOpRequestRef op);
+
+  friend class C_AckMarkedDown;
+  bool preprocess_failure(MonOpRequestRef op);
+  bool prepare_failure(MonOpRequestRef op);
+  bool prepare_mark_me_down(MonOpRequestRef op);
+  void process_failures();
+  void take_all_failures(list<MonOpRequestRef>& ls);
+
+  bool preprocess_full(MonOpRequestRef op);
+  bool prepare_full(MonOpRequestRef op);
+
+  bool preprocess_boot(MonOpRequestRef op);
+  bool prepare_boot(MonOpRequestRef op);
+  void _booted(MonOpRequestRef op, bool logit);
+
+  void update_up_thru(int from, epoch_t up_thru);
+  bool preprocess_alive(MonOpRequestRef op);
+  bool prepare_alive(MonOpRequestRef op);
+  void _reply_map(MonOpRequestRef op, epoch_t e);
+
+  bool preprocess_pgtemp(MonOpRequestRef op);
+  bool prepare_pgtemp(MonOpRequestRef op);
+
+  bool preprocess_pg_created(MonOpRequestRef op);
+  bool prepare_pg_created(MonOpRequestRef op);
+
+  int _check_remove_pool(int64_t pool_id, const pg_pool_t &pool, ostream *ss);
+  bool _check_become_tier(
+      int64_t tier_pool_id, const pg_pool_t *tier_pool,
+      int64_t base_pool_id, const pg_pool_t *base_pool,
+      int *err, ostream *ss) const;
+  bool _check_remove_tier(
+      int64_t base_pool_id, const pg_pool_t *base_pool, const pg_pool_t *tier_pool,
+      int *err, ostream *ss) const;
+
+  int _prepare_remove_pool(int64_t pool, ostream *ss, bool no_fake);
+  int _prepare_rename_pool(int64_t pool, string newname);
+
+  bool preprocess_pool_op (MonOpRequestRef op);
+  bool preprocess_pool_op_create (MonOpRequestRef op);
+  bool prepare_pool_op (MonOpRequestRef op);
+  bool prepare_pool_op_create (MonOpRequestRef op);
+  bool prepare_pool_op_delete(MonOpRequestRef op);
+  int crush_rename_bucket(const string& srcname,
+			  const string& dstname,
+			  ostream *ss);
+  void check_legacy_ec_plugin(const string& plugin, 
+			      const string& profile) const;
+  int normalize_profile(const string& profilename, 
+			ErasureCodeProfile &profile,
+			bool force,
+			ostream *ss);
+  int crush_rule_create_erasure(const string &name,
+				const string &profile,
+				int *rule,
+				ostream *ss);
+  int get_crush_rule(const string &rule_name,
+			int *crush_rule,
+			ostream *ss);
+  int get_erasure_code(const string &erasure_code_profile,
+		       ErasureCodeInterfaceRef *erasure_code,
+		       ostream *ss) const;
+  int prepare_pool_crush_rule(const unsigned pool_type,
+				 const string &erasure_code_profile,
+				 const string &rule_name,
+				 int *crush_rule,
+				 ostream *ss);
+  bool erasure_code_profile_in_use(
+    const mempool::osdmap::map<int64_t, pg_pool_t> &pools,
+    const string &profile,
+    ostream *ss);
+  int parse_erasure_code_profile(const vector<string> &erasure_code_profile,
+				 map<string,string> *erasure_code_profile_map,
+				 ostream *ss);
+  int prepare_pool_size(const unsigned pool_type,
+			const string &erasure_code_profile,
+			unsigned *size, unsigned *min_size,
+			ostream *ss);
+  int prepare_pool_stripe_width(const unsigned pool_type,
+				const string &erasure_code_profile,
+				unsigned *stripe_width,
+				ostream *ss);
+  int check_pg_num(int64_t pool, int pg_num, int size, ostream* ss);
+  int prepare_new_pool(string& name, uint64_t auid,
+		       int crush_rule,
+		       const string &crush_rule_name,
+                       unsigned pg_num, unsigned pgp_num,
+		       const string &erasure_code_profile,
+                       const unsigned pool_type,
+                       const uint64_t expected_num_objects,
+                       FastReadType fast_read,
+		       ostream *ss);
+  int prepare_new_pool(MonOpRequestRef op);
+
+  void set_pool_flags(int64_t pool_id, uint64_t flags);
+  void clear_pool_flags(int64_t pool_id, uint64_t flags);
+  bool update_pools_status();
+
+  bool prepare_set_flag(MonOpRequestRef op, int flag);
+  bool prepare_unset_flag(MonOpRequestRef op, int flag);
+
+  void _pool_op_reply(MonOpRequestRef op,
+                      int ret, epoch_t epoch, bufferlist *blp=NULL);
+
+  struct C_Booted : public C_MonOp {
+    OSDMonitor *cmon;
+    bool logit;
+    C_Booted(OSDMonitor *cm, MonOpRequestRef op_, bool l=true) :
+      C_MonOp(op_), cmon(cm), logit(l) {}
+    void _finish(int r) override {
+      if (r >= 0)
+	cmon->_booted(op, logit);
+      else if (r == -ECANCELED)
+        return;
+      else if (r == -EAGAIN)
+        cmon->dispatch(op);
+      else
+	assert(0 == "bad C_Booted return value");
+    }
+  };
+
+  struct C_ReplyMap : public C_MonOp {
+    OSDMonitor *osdmon;
+    epoch_t e;
+    C_ReplyMap(OSDMonitor *o, MonOpRequestRef op_, epoch_t ee)
+      : C_MonOp(op_), osdmon(o), e(ee) {}
+    void _finish(int r) override {
+      if (r >= 0)
+	osdmon->_reply_map(op, e);
+      else if (r == -ECANCELED)
+        return;
+      else if (r == -EAGAIN)
+	osdmon->dispatch(op);
+      else
+	assert(0 == "bad C_ReplyMap return value");
+    }    
+  };
+  struct C_PoolOp : public C_MonOp {
+    OSDMonitor *osdmon;
+    int replyCode;
+    int epoch;
+    bufferlist reply_data;
+    C_PoolOp(OSDMonitor * osd, MonOpRequestRef op_, int rc, int e, bufferlist *rd=NULL) :
+      C_MonOp(op_), osdmon(osd), replyCode(rc), epoch(e) {
+      if (rd)
+	reply_data = *rd;
+    }
+    void _finish(int r) override {
+      if (r >= 0)
+	osdmon->_pool_op_reply(op, replyCode, epoch, &reply_data);
+      else if (r == -ECANCELED)
+        return;
+      else if (r == -EAGAIN)
+	osdmon->dispatch(op);
+      else
+	assert(0 == "bad C_PoolOp return value");
+    }
+  };
+
+  bool preprocess_remove_snaps(MonOpRequestRef op);
+  bool prepare_remove_snaps(MonOpRequestRef op);
+
+  OpTracker op_tracker;
+
+  int load_metadata(int osd, map<string, string>& m, ostream *err);
+  void count_metadata(const string& field, Formatter *f);
+public:
+  void count_metadata(const string& field, map<string,int> *out);
+protected:
+  int get_osd_objectstore_type(int osd, std::string *type);
+  bool is_pool_currently_all_bluestore(int64_t pool_id, const pg_pool_t &pool,
+				       ostream *err);
+
+  // when we last received PG stats from each osd
+  map<int,utime_t> last_osd_report;
+  // TODO: use last_osd_report to store the osd report epochs, once we don't
+  //       need to upgrade from pre-luminous releases.
+  map<int,epoch_t> osd_epochs;
+  LastEpochClean last_epoch_clean;
+  bool preprocess_beacon(MonOpRequestRef op);
+  bool prepare_beacon(MonOpRequestRef op);
+  epoch_t get_min_last_epoch_clean() const;
+
+  friend class C_UpdateCreatingPGs;
+  std::map<int, std::map<epoch_t, std::set<pg_t>>> creating_pgs_by_osd_epoch;
+  std::vector<pg_t> pending_created_pgs;
+  // the epoch when the pg mapping was calculated
+  epoch_t creating_pgs_epoch = 0;
+  creating_pgs_t creating_pgs;
+  mutable std::mutex creating_pgs_lock;
+
+  creating_pgs_t update_pending_pgs(const OSDMap::Incremental& inc);
+  void trim_creating_pgs(creating_pgs_t *creating_pgs,
+			 const ceph::unordered_map<pg_t,pg_stat_t>& pgm);
+  unsigned scan_for_creating_pgs(
+    const mempool::osdmap::map<int64_t,pg_pool_t>& pools,
+    const mempool::osdmap::set<int64_t>& removed_pools,
+    utime_t modified,
+    creating_pgs_t* creating_pgs) const;
+  pair<int32_t, pg_t> get_parent_pg(pg_t pgid) const;
+  void update_creating_pgs();
+  void check_pg_creates_subs();
+  epoch_t send_pg_creates(int osd, Connection *con, epoch_t next) const;
+
+  int32_t _allocate_osd_id(int32_t* existing_id);
+
+public:
+  OSDMonitor(CephContext *cct, Monitor *mn, Paxos *p, const string& service_name);
+
+  void tick() override;  // check state, take actions
+
+  void get_health(list<pair<health_status_t,string> >& summary,
+		  list<pair<health_status_t,string> > *detail,
+		  CephContext *cct) const override;
+  bool preprocess_command(MonOpRequestRef op);
+  bool prepare_command(MonOpRequestRef op);
+  bool prepare_command_impl(MonOpRequestRef op, map<string,cmd_vartype>& cmdmap);
+
+  int validate_osd_create(
+      const int32_t id,
+      const uuid_d& uuid,
+      const bool check_osd_exists,
+      int32_t* existing_id,
+      stringstream& ss);
+  int prepare_command_osd_create(
+      const int32_t id,
+      const uuid_d& uuid,
+      int32_t* existing_id,
+      stringstream& ss);
+  void do_osd_create(const int32_t id, const uuid_d& uuid, int32_t* new_id);
+  int prepare_command_osd_purge(int32_t id, stringstream& ss);
+  int prepare_command_osd_destroy(int32_t id, stringstream& ss);
+  int _prepare_command_osd_crush_remove(
+      CrushWrapper &newcrush,
+      int32_t id,
+      int32_t ancestor,
+      bool has_ancestor,
+      bool unlink_only);
+  void do_osd_crush_remove(CrushWrapper& newcrush);
+  int prepare_command_osd_crush_remove(
+      CrushWrapper &newcrush,
+      int32_t id,
+      int32_t ancestor,
+      bool has_ancestor,
+      bool unlink_only);
+  int prepare_command_osd_remove(int32_t id);
+  int prepare_command_osd_new(
+      MonOpRequestRef op,
+      const map<string,cmd_vartype>& cmdmap,
+      const map<string,string>& secrets,
+      stringstream &ss,
+      Formatter *f);
+
+  int prepare_command_pool_set(map<string,cmd_vartype> &cmdmap,
+                               stringstream& ss);
+  int prepare_command_pool_application(const string &prefix,
+                                       map<string,cmd_vartype> &cmdmap,
+                                       stringstream& ss);
+
+  bool handle_osd_timeouts(const utime_t &now,
+			   std::map<int,utime_t> &last_osd_report);
+
+  void send_latest(MonOpRequestRef op, epoch_t start=0);
+  void send_latest_now_nodelete(MonOpRequestRef op, epoch_t start=0) {
+    op->mark_osdmon_event(__func__);
+    send_incremental(op, start);
+  }
+
+  int get_version(version_t ver, bufferlist& bl) override;
+  int get_version_full(version_t ver, bufferlist& bl) override;
+
+  epoch_t blacklist(const entity_addr_t& a, utime_t until);
+
+  void dump_info(Formatter *f);
+  int dump_osd_metadata(int osd, Formatter *f, ostream *err);
+  void print_nodes(Formatter *f);
+
+  void check_osdmap_sub(Subscription *sub);
+  void check_pg_creates_sub(Subscription *sub);
+
+  void do_application_enable(int64_t pool_id, const std::string &app_name);
+
+  void add_flag(int flag) {
+    if (!(osdmap.flags & flag)) {
+      if (pending_inc.new_flags < 0)
+	pending_inc.new_flags = osdmap.flags;
+      pending_inc.new_flags |= flag;
+    }
+  }
+
+  void remove_flag(int flag) {
+    if(osdmap.flags & flag) {
+      if (pending_inc.new_flags < 0)
+	pending_inc.new_flags = osdmap.flags;
+      pending_inc.new_flags &= ~flag;
+    }
+  }
+};
+
+#endif