+++ /dev/null
-// -*- 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) 2013 Inktank, Inc
- *
- * 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.
- *
- */
-#include "include/memory.h"
-#include <errno.h>
-#include <map>
-#include <list>
-#include <string>
-#include <sstream>
-
-#include "acconfig.h"
-
-#ifdef HAVE_SYS_VFS_H
-#include <sys/vfs.h>
-#endif
-
-#ifdef HAVE_SYS_MOUNT_H
-#include <sys/mount.h>
-#endif
-
-#ifdef HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
-
-#include "messages/MMonHealth.h"
-#include "include/assert.h"
-#include "common/Formatter.h"
-#include "common/errno.h"
-
-#include "mon/Monitor.h"
-#include "mon/DataHealthService.h"
-
-#define dout_subsys ceph_subsys_mon
-#undef dout_prefix
-#define dout_prefix _prefix(_dout, mon, this)
-static ostream& _prefix(std::ostream *_dout, const Monitor *mon,
- const DataHealthService *svc) {
- assert(mon != NULL);
- assert(svc != NULL);
- return *_dout << "mon." << mon->name << "@" << mon->rank
- << "(" << mon->get_state_name() << ")." << svc->get_name()
- << "(" << svc->get_epoch() << ") ";
-}
-
-void DataHealthService::start_epoch()
-{
- dout(10) << __func__ << " epoch " << get_epoch() << dendl;
- // we are not bound by election epochs, but we should clear the stats
- // everytime an election is triggerd. As far as we know, a monitor might
- // have been running out of disk space and someone fixed it. We don't want
- // to hold the cluster back, even confusing the user, due to some possibly
- // outdated stats.
- stats.clear();
- last_warned_percent = 0;
-}
-
-void DataHealthService::get_health(
- list<pair<health_status_t,string> >& summary,
- list<pair<health_status_t,string> > *detail)
-{
- dout(10) << __func__ << dendl;
- for (map<entity_inst_t,DataStats>::iterator it = stats.begin();
- it != stats.end(); ++it) {
- string mon_name = mon->monmap->get_name(it->first.addr);
- DataStats& stats = it->second;
-
- health_status_t health_status = HEALTH_OK;
- string health_detail;
- if (stats.fs_stats.avail_percent <= g_conf->mon_data_avail_crit) {
- health_status = HEALTH_ERR;
- health_detail = "low disk space, shutdown imminent";
- } else if (stats.fs_stats.avail_percent <= g_conf->mon_data_avail_warn) {
- health_status = HEALTH_WARN;
- health_detail = "low disk space";
- }
-
- if (stats.store_stats.bytes_total >= g_conf->mon_data_size_warn) {
- if (health_status > HEALTH_WARN)
- health_status = HEALTH_WARN;
- if (!health_detail.empty())
- health_detail.append("; ");
- stringstream ss;
- ss << "store is getting too big! "
- << prettybyte_t(stats.store_stats.bytes_total)
- << " >= " << prettybyte_t(g_conf->mon_data_size_warn);
- health_detail.append(ss.str());
- }
-
- if (health_status != HEALTH_OK) {
- stringstream ss;
- ss << "mon." << mon_name << " " << health_detail;
- summary.push_back(make_pair(health_status, ss.str()));
- ss << " -- " << stats.fs_stats.avail_percent << "% avail";
- if (detail)
- detail->push_back(make_pair(health_status, ss.str()));
- }
- }
-}
-
-int DataHealthService::update_store_stats(DataStats &ours)
-{
- map<string,uint64_t> extra;
- uint64_t store_size = mon->store->get_estimated_size(extra);
- assert(store_size > 0);
-
- ours.store_stats.bytes_total = store_size;
- ours.store_stats.bytes_sst = extra["sst"];
- ours.store_stats.bytes_log = extra["log"];
- ours.store_stats.bytes_misc = extra["misc"];
- ours.last_update = ceph_clock_now();
-
- return 0;
-}
-
-
-int DataHealthService::update_stats()
-{
- entity_inst_t our_inst = mon->messenger->get_myinst();
- DataStats& ours = stats[our_inst];
-
- int err = get_fs_stats(ours.fs_stats, g_conf->mon_data.c_str());
- if (err < 0) {
- derr << __func__ << " get_fs_stats error: " << cpp_strerror(err) << dendl;
- return err;
- }
- dout(0) << __func__ << " avail " << ours.fs_stats.avail_percent << "%"
- << " total " << prettybyte_t(ours.fs_stats.byte_total)
- << ", used " << prettybyte_t(ours.fs_stats.byte_used)
- << ", avail " << prettybyte_t(ours.fs_stats.byte_avail) << dendl;
- ours.last_update = ceph_clock_now();
-
- return update_store_stats(ours);
-}
-
-void DataHealthService::share_stats()
-{
- dout(10) << __func__ << dendl;
- if (!in_quorum())
- return;
-
- assert(!stats.empty());
- entity_inst_t our_inst = mon->messenger->get_myinst();
- assert(stats.count(our_inst) > 0);
- DataStats &ours = stats[our_inst];
- const set<int>& quorum = mon->get_quorum();
- for (set<int>::const_iterator it = quorum.begin();
- it != quorum.end(); ++it) {
- if (mon->monmap->get_name(*it) == mon->name)
- continue;
- entity_inst_t inst = mon->monmap->get_inst(*it);
- MMonHealth *m = new MMonHealth(HealthService::SERVICE_HEALTH_DATA,
- MMonHealth::OP_TELL);
- m->data_stats = ours;
- dout(20) << __func__ << " send " << *m << " to " << inst << dendl;
- mon->messenger->send_message(m, inst);
- }
-}
-
-void DataHealthService::service_tick()
-{
- dout(10) << __func__ << dendl;
-
- int err = update_stats();
- if (err < 0) {
- derr << "something went wrong obtaining our disk stats: "
- << cpp_strerror(err) << dendl;
- force_shutdown();
- return;
- }
- if (in_quorum())
- share_stats();
-
- DataStats &ours = stats[mon->messenger->get_myinst()];
-
- if (ours.fs_stats.avail_percent <= g_conf->mon_data_avail_crit) {
- derr << "reached critical levels of available space on local monitor storage"
- << " -- shutdown!" << dendl;
- force_shutdown();
- return;
- }
-
- // we must backoff these warnings, and track how much data is being
- // consumed in-between reports to assess if it's worth to log this info,
- // otherwise we may very well contribute to the consumption of the
- // already low available disk space.
- if (ours.fs_stats.avail_percent <= g_conf->mon_data_avail_warn) {
- if (ours.fs_stats.avail_percent != last_warned_percent)
- mon->clog->warn()
- << "reached concerning levels of available space on local monitor storage"
- << " (" << ours.fs_stats.avail_percent << "% free)";
- last_warned_percent = ours.fs_stats.avail_percent;
- } else {
- last_warned_percent = 0;
- }
-}
-
-void DataHealthService::handle_tell(MonOpRequestRef op)
-{
- op->mark_event("datahealth:handle_tell");
- MMonHealth *m = static_cast<MMonHealth*>(op->get_req());
- dout(10) << __func__ << " " << *m << dendl;
- assert(m->get_service_op() == MMonHealth::OP_TELL);
-
- stats[m->get_source_inst()] = m->data_stats;
-}
-
-bool DataHealthService::service_dispatch_op(MonOpRequestRef op)
-{
- op->mark_event("datahealth:service_dispatch_op");
- MMonHealth *m = static_cast<MMonHealth*>(op->get_req());
- dout(10) << __func__ << " " << *m << dendl;
- assert(m->get_service_type() == get_type());
- if (!in_quorum()) {
- dout(1) << __func__ << " not in quorum -- drop message" << dendl;
- return false;
- }
-
- switch (m->service_op) {
- case MMonHealth::OP_TELL:
- // someone is telling us their stats
- handle_tell(op);
- break;
- default:
- dout(0) << __func__ << " unknown op " << m->service_op << dendl;
- assert(0 == "Unknown service op");
- break;
- }
- return true;
-}
Code Review / stor4nfv.git / blobdiff