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, out_path, oid;
  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], mandatory")
  41     ;
  42   po::positional_options_description p;
  43   p.add("command", 1);
  44
  45   vector<string> ceph_option_strings;
  46   po::variables_map vm;
  47   try {
  48     po::parsed_options parsed =
  49       po::command_line_parser(argc, argv).options(desc).positional(p).allow_unregistered().run();
  50     po::store(
  51               parsed,
  52               vm);
  53     po::notify(vm);
  54
  55     ceph_option_strings = po::collect_unrecognized(parsed.options,
  56                                                    po::include_positional);
  57   } catch(po::error &e) {
  58     std::cerr << e.what() << std::endl;
  59     return 1;
  60   }
  61
  62   vector<const char *> ceph_options, def_args;
  63   ceph_options.reserve(ceph_option_strings.size());
  64   for (vector<string>::iterator i = ceph_option_strings.begin();
  65        i != ceph_option_strings.end();
  66        ++i) {
  67     ceph_options.push_back(i->c_str());
  68   }
  69
  70   if (vm.count("debug")) debug = true;
  71
  72   auto cct = global_init(
  73     &def_args, ceph_options, CEPH_ENTITY_TYPE_OSD,
  74     CODE_ENVIRONMENT_UTILITY_NODOUT, 0);
  75   common_init_finish(g_ceph_context);
  76   g_ceph_context->_conf->apply_changes(NULL);
  77   g_conf = g_ceph_context->_conf;
  78   if (debug) {
  79     g_conf->set_val_or_die("log_to_stderr", "true");
  80     g_conf->set_val_or_die("err_to_stderr", "true");
  81   }
  82   g_conf->apply_changes(NULL);
  83
  84   if (vm.count("help")) {
  85     std::cerr << desc << std::endl;
  86     return 1;
  87   }
  88
  89   if (vm.count("omap-path") == 0) {
  90     std::cerr << "Required argument --omap-path" << std::endl;
  91     return 1;
  92   }
  93
  94   if (vm.count("command") == 0) {
  95     std::cerr << "Required argument --command" << std::endl;
  96     return 1;
  97   }
  98
  99   KeyValueDB* store(KeyValueDB::create(g_ceph_context, "leveldb", store_path));
 100   /*if (vm.count("paranoid")) {
 101     std::cerr << "Enabling paranoid checks" << std::endl;
 102     store->options.paranoid_checks = true;
 103     }*/
 104   DBObjectMap omap(cct.get(), store);
 105   stringstream out;
 106   int r = store->open(out);
 107   if (r < 0) {
 108     std::cerr << "Store open got: " << cpp_strerror(r) << std::endl;
 109     std::cerr << "Output: " << out.str() << std::endl;
 110     return r;
 111   }
 112   // We don't call omap.init() here because it will repair
 113   // the DBObjectMap which we might want to examine for diagnostic
 114   // reasons.  Instead use --command repair.
 115
 116   if (cmd == "dump-raw-keys") {
 117     KeyValueDB::WholeSpaceIterator i = store->get_iterator();
 118     for (i->seek_to_first(); i->valid(); i->next()) {
 119       std::cout << i->raw_key() << std::endl;
 120     }
 121     return 0;
 122   } else if (cmd == "dump-raw-key-vals") {
 123     KeyValueDB::WholeSpaceIterator i = store->get_iterator();
 124     for (i->seek_to_first(); i->valid(); i->next()) {
 125       std::cout << i->raw_key() << std::endl;
 126       i->value().hexdump(std::cout);
 127     }
 128     return 0;
 129   } else if (cmd == "dump-objects") {
 130     vector<ghobject_t> objects;
 131     r = omap.list_objects(&objects);
 132     if (r < 0) {
 133       std::cerr << "list_objects got: " << cpp_strerror(r) << std::endl;
 134       return r;
 135     }
 136     for (vector<ghobject_t>::iterator i = objects.begin();
 137          i != objects.end();
 138          ++i) {
 139       if (vm.count("oid") != 0 && i->hobj.oid.name != oid)
 140         continue;
 141       std::cout << *i << std::endl;
 142     }
 143     return 0;
 144   } else if (cmd == "dump-objects-with-keys") {
 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 << "Object: " << *i << std::endl;
 157       ObjectMap::ObjectMapIterator j = omap.get_iterator(ghobject_t(i->hobj));
 158       for (j->seek_to_first(); j->valid(); j->next()) {
 159         std::cout << j->key() << std::endl;
 160         j->value().hexdump(std::cout);
 161       }
 162     }
 163     return 0;
 164   } else if (cmd == "check" || cmd == "repair") {
 165     ostringstream ss;
 166     bool repair = (cmd == "repair");
 167     r = omap.check(ss, repair);
 168     if (r) {
 169       std::cerr << ss.str() << std::endl;
 170       if (r > 0) {
 171         std::cerr << "check got " << r << " error(s)" << std::endl;
 172         return 1;
 173       }
 174     }
 175     std::cout << (repair ? "repair" : "check") << " succeeded" << std::endl;
 176     return 0;
 177   } else if (cmd == "dump-headers") {
 178     vector<DBObjectMap::_Header> headers;
 179     r = omap.list_object_headers(&headers);
 180     if (r < 0) {
 181       std::cerr << "list_object_headers got: " << cpp_strerror(r) << std::endl;
 182       return 1;
 183     }
 184     for (auto i : headers)
 185       std::cout << i << std::endl;
 186     return 0;
 187   } else {
 188     std::cerr << "Did not recognize command " << cmd << std::endl;
 189     return 1;
 190   }
 191 }