ceph/src/tools/ceph_osdomap_tool.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4 * Ceph - scalable distributed file system
   5 *
   6 * Copyright (C) 2012 Inktank, Inc.
   7 *
   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 kkjversion 2.1, as published by the Free Software
  11 * Foundation. See file COPYING.
  12 */
  13 #include <boost/program_options/variables_map.hpp>
  14 #include <boost/program_options/parsers.hpp>
  15
  16 #include <stdlib.h>
  17 #include <string>
  18
  19 #include "common/errno.h"
  20 #include "global/global_init.h"
  21
  22 #include "os/filestore/DBObjectMap.h"
  23 #include "kv/KeyValueDB.h"
  24
  25 namespace po = boost::program_options;
  26 using namespace std;
  27
  28 int main(int argc, char **argv) {
  29   po::options_description desc("Allowed options");
  30   string store_path, cmd, oid, backend;
  31   bool debug = false;
  32   desc.add_options()
  33     ("help", "produce help message")
  34     ("omap-path", po::value<string>(&store_path),
  35      "path to mon directory, mandatory (current/omap usually)")
  36     ("paranoid", "use paranoid checking")
  37     ("debug", "Additional debug output from DBObjectMap")
  38     ("oid", po::value<string>(&oid), "Restrict to this object id when dumping objects")
  39     ("command", po::value<string>(&cmd),
  40      "command arg is one of [dump-raw-keys, dump-raw-key-vals, dump-objects, dump-objects-with-keys, check, dump-headers, repair, compact], mandatory")
  41     ("backend", po::value<string>(&backend),
  42      "DB backend (default rocksdb)")
  43     ;
  44   po::positional_options_description p;
  45   p.add("command", 1);
  46
  47   vector<string> ceph_option_strings;
  48   po::variables_map vm;
  49   try {
  50     po::parsed_options parsed =
  51       po::command_line_parser(argc, argv).options(desc).positional(p).allow_unregistered().run();
  52     po::store(
  53               parsed,
  54               vm);
  55     po::notify(vm);
  56
  57     ceph_option_strings = po::collect_unrecognized(parsed.options,
  58                                                    po::include_positional);
  59   } catch(po::error &e) {
  60     std::cerr << e.what() << std::endl;
  61     return 1;
  62   }
  63
  64   vector<const char *> ceph_options, def_args;
  65   ceph_options.reserve(ceph_option_strings.size());
  66   for (vector<string>::iterator i = ceph_option_strings.begin();
  67        i != ceph_option_strings.end();
  68        ++i) {
  69     ceph_options.push_back(i->c_str());
  70   }
  71
  72   if (vm.count("debug")) debug = true;
  73
  74   auto cct = global_init(
  75     &def_args, ceph_options, CEPH_ENTITY_TYPE_OSD,
  76     CODE_ENVIRONMENT_UTILITY_NODOUT, 0);
  77   common_init_finish(g_ceph_context);
  78   g_ceph_context->_conf->apply_changes(NULL);
  79   g_conf = g_ceph_context->_conf;
  80   if (debug) {
  81     g_conf->set_val_or_die("log_to_stderr", "true");
  82     g_conf->set_val_or_die("err_to_stderr", "true");
  83   }
  84   g_conf->apply_changes(NULL);
  85
  86   if (vm.count("help")) {
  87     std::cerr << desc << std::endl;
  88     return 1;
  89   }
  90
  91   if (vm.count("omap-path") == 0) {
  92     std::cerr << "Required argument --omap-path" << std::endl;
  93     return 1;
  94   }
  95
  96   if (vm.count("command") == 0) {
  97     std::cerr << "Required argument --command" << std::endl;
  98     return 1;
  99   }
 100
 101   if (vm.count("backend") == 0) {
 102     backend = "rocksdb";
 103   }
 104
 105   KeyValueDB* store(KeyValueDB::create(g_ceph_context, backend, store_path));
 106   if (store == NULL) {
 107     std::cerr << "Invalid backend '" << backend << "' specified" << std::endl;
 108     return 1;
 109   }
 110   /*if (vm.count("paranoid")) {
 111     std::cerr << "Enabling paranoid checks" << std::endl;
 112     store->options.paranoid_checks = true;
 113     }*/
 114   DBObjectMap omap(cct.get(), store);
 115   stringstream out;
 116   int r = store->open(out);
 117   if (r < 0) {
 118     std::cerr << "Store open got: " << cpp_strerror(r) << std::endl;
 119     std::cerr << "Output: " << out.str() << std::endl;
 120     return r;
 121   }
 122   // We don't call omap.init() here because it will repair
 123   // the DBObjectMap which we might want to examine for diagnostic
 124   // reasons.  Instead use --command repair.
 125
 126   omap.get_state();
 127   std::cout << "Version: " << (int)omap.state.v << std::endl;
 128   std::cout << "Seq: " << omap.state.seq << std::endl;
 129   std::cout << "legacy: " << (omap.state.legacy ? "true" : "false") << std::endl;
 130
 131   if (cmd == "dump-raw-keys") {
 132     KeyValueDB::WholeSpaceIterator i = store->get_iterator();
 133     for (i->seek_to_first(); i->valid(); i->next()) {
 134       std::cout << i->raw_key() << std::endl;
 135     }
 136     return 0;
 137   } else if (cmd == "dump-raw-key-vals") {
 138     KeyValueDB::WholeSpaceIterator i = store->get_iterator();
 139     for (i->seek_to_first(); i->valid(); i->next()) {
 140       std::cout << i->raw_key() << std::endl;
 141       i->value().hexdump(std::cout);
 142     }
 143     return 0;
 144   } else if (cmd == "dump-objects") {
 145     vector<ghobject_t> objects;
 146     r = omap.list_objects(&objects);
 147     if (r < 0) {
 148       std::cerr << "list_objects got: " << cpp_strerror(r) << std::endl;
 149       return r;
 150     }
 151     for (vector<ghobject_t>::iterator i = objects.begin();
 152          i != objects.end();
 153          ++i) {
 154       if (vm.count("oid") != 0 && i->hobj.oid.name != oid)
 155         continue;
 156       std::cout << *i << std::endl;
 157     }
 158     return 0;
 159   } else if (cmd == "dump-objects-with-keys") {
 160     vector<ghobject_t> objects;
 161     r = omap.list_objects(&objects);
 162     if (r < 0) {
 163       std::cerr << "list_objects got: " << cpp_strerror(r) << std::endl;
 164       return r;
 165     }
 166     for (vector<ghobject_t>::iterator i = objects.begin();
 167          i != objects.end();
 168          ++i) {
 169       if (vm.count("oid") != 0 && i->hobj.oid.name != oid)
 170         continue;
 171       std::cout << "Object: " << *i << std::endl;
 172       ObjectMap::ObjectMapIterator j = omap.get_iterator(ghobject_t(i->hobj));
 173       for (j->seek_to_first(); j->valid(); j->next()) {
 174         std::cout << j->key() << std::endl;
 175         j->value().hexdump(std::cout);
 176       }
 177     }
 178     return 0;
 179   } else if (cmd == "check" || cmd == "repair") {
 180     ostringstream ss;
 181     bool repair = (cmd == "repair");
 182     r = omap.check(ss, repair, true);
 183     if (r) {
 184       std::cerr << ss.str() << std::endl;
 185       if (r > 0) {
 186         std::cerr << "check got " << r << " error(s)" << std::endl;
 187         return 1;
 188       }
 189     }
 190     std::cout << (repair ? "repair" : "check") << " succeeded" << std::endl;
 191     return 0;
 192   } else if (cmd == "dump-headers") {
 193     vector<DBObjectMap::_Header> headers;
 194     r = omap.list_object_headers(&headers);
 195     if (r < 0) {
 196       std::cerr << "list_object_headers got: " << cpp_strerror(r) << std::endl;
 197       return 1;
 198     }
 199     for (auto i : headers)
 200       std::cout << i << std::endl;
 201     return 0;
 202   } else if (cmd == "resetv2") {
 203     omap.state.v = 2;
 204     omap.state.legacy = false;
 205     omap.set_state();
 206   } else if (cmd == "compact") {
 207     omap.compact();
 208     return 0;
 209   } else {
 210     std::cerr << "Did not recognize command " << cmd << std::endl;
 211     return 1;
 212   }
 213 }