mirror of
https://github.com/ceph/ceph
synced 2025-01-06 11:12:18 +00:00
138 lines
3.1 KiB
C++
138 lines
3.1 KiB
C++
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
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// vim: ts=8 sw=2 smarttab
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/*
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* Ceph - scalable distributed file system
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*
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* Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
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*
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* This is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software
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* Foundation. See file COPYING.
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*
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*/
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#include <sys/stat.h>
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#include <iostream>
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#include <string>
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using namespace std;
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#include "config.h"
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#include "mon/MonMap.h"
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#include "mon/MonClient.h"
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#include "msg/SimpleMessenger.h"
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#include "osd/OSDMap.h"
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#include "osdc/Objecter.h"
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#include "osdc/Journaler.h"
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#include "mds/mdstypes.h"
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#include "common/Timer.h"
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#include "common/common_init.h"
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#ifndef DARWIN
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#include <envz.h>
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#endif // DARWIN
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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OSDMap osdmap;
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Mutex lock("dumpjournal.cc lock");
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Cond cond;
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Messenger *messenger = 0;
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Objecter *objecter = 0;
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Journaler *journaler = 0;
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class Dumper : public Dispatcher {
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bool ms_dispatch(Message *m) {
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switch (m->get_type()) {
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case CEPH_MSG_OSD_OPREPLY:
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objecter->handle_osd_op_reply((MOSDOpReply *)m);
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break;
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case CEPH_MSG_OSD_MAP:
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objecter->handle_osd_map((MOSDMap*)m);
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break;
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default:
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return false;
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}
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return true;
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}
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bool ms_handle_reset(Connection *con) { return false; }
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void ms_handle_remote_reset(Connection *con) {}
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} dispatcher;
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void usage()
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{
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exit(1);
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}
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int main(int argc, const char **argv, const char *envp[])
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{
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vector<const char*> args;
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argv_to_vec(argc, argv, args);
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env_to_vec(args);
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common_init(args, "dumpjournal", false, false);
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vec_to_argv(args, argc, argv);
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int mds = 0;
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// get monmap
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MonClient mc;
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if (mc.build_initial_monmap() < 0)
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return -1;
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// start up network
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SimpleMessenger *messenger = new SimpleMessenger();
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messenger->bind();
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g_conf.daemonize = false; // not us!
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messenger->start();
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messenger->register_entity(entity_name_t::ADMIN());
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messenger->add_dispatcher_head(&dispatcher);
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inodeno_t ino = MDS_INO_LOG_OFFSET + mds;
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unsigned pg_pool = CEPH_METADATA_RULE;
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objecter = new Objecter(messenger, &mc, &osdmap, lock);
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journaler = new Journaler(ino, pg_pool, CEPH_FS_ONDISK_MAGIC, objecter, 0, 0, &lock);
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objecter->set_client_incarnation(0);
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bool done;
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journaler->recover(new C_SafeCond(&lock, &cond, &done));
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lock.Lock();
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while (!done)
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cond.Wait(lock);
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lock.Unlock();
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__u64 start = journaler->get_read_pos();
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__u64 end = journaler->get_write_pos();
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__u64 len = end-start;
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cout << "journal is " << start << "~" << len << std::endl;
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Filer filer(objecter);
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bufferlist bl;
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filer.read(ino, &journaler->get_layout(), 0,
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start, len, &bl, 0, new C_SafeCond(&lock, &cond, &done));
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lock.Lock();
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while (!done)
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cond.Wait(lock);
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lock.Unlock();
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cout << "read " << bl.length() << " bytes" << std::endl;
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bl.write_file("mds.journal.dump");
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messenger->shutdown();
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// wait for messenger to finish
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messenger->wait();
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return 0;
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}
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