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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>
*
* 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 <sys/stat.h>
#include <iostream>
#include <string>
using namespace std;
#include "config.h"
#include "mon/MonMap.h"
#include "mon/MonClient.h"
#include "msg/SimpleMessenger.h"
#include "osd/OSDMap.h"
#include "messages/MOSDGetMap.h"
#include "osdc/Objecter.h"
#include "osdc/Journaler.h"
#include "mds/mdstypes.h"
#include "common/Timer.h"
#include "common/common_init.h"
#ifndef DARWIN
#include <envz.h>
#endif // DARWIN
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
OSDMap osdmap;
Mutex lock("dumpjournal.cc lock");
Cond cond;
Messenger *messenger = 0;
Objecter *objecter = 0;
Journaler *journaler = 0;
class Dumper : public Dispatcher {
bool ms_dispatch(Message *m) {
switch (m->get_type()) {
case CEPH_MSG_OSD_OPREPLY:
objecter->handle_osd_op_reply((MOSDOpReply *)m);
break;
case CEPH_MSG_OSD_MAP:
objecter->handle_osd_map((MOSDMap*)m);
break;
default:
return false;
}
return true;
}
bool ms_handle_reset(Connection *con, const entity_addr_t& peer) { return false; }
void ms_handle_failure(Connection *con, Message *m, const entity_addr_t& peer) { }
void ms_handle_remote_reset(Connection *con, const entity_addr_t& peer) {}
} dispatcher;
void usage()
{
exit(1);
}
int main(int argc, const char **argv, const char *envp[])
{
vector<const char*> args;
argv_to_vec(argc, argv, args);
env_to_vec(args);
common_init(args, "dumpjournal", false, false);
vec_to_argv(args, argc, argv);
int mds = 0;
// get monmap
MonClient mc;
if (mc.build_initial_monmap() < 0)
return -1;
// start up network
SimpleMessenger rank;
rank.bind();
g_conf.daemonize = false; // not us!
rank.start();
messenger = rank.register_entity(entity_name_t::ADMIN());
messenger->add_dispatcher_head(&dispatcher);
inodeno_t ino = MDS_INO_LOG_OFFSET + mds;
unsigned pg_pool = CEPH_METADATA_RULE;
objecter = new Objecter(messenger, &mc, &osdmap, lock);
journaler = new Journaler(ino, pg_pool, CEPH_FS_ONDISK_MAGIC, objecter, 0, 0, &lock);
objecter->set_client_incarnation(0);
bool done;
journaler->recover(new C_SafeCond(&lock, &cond, &done));
lock.Lock();
while (!done)
cond.Wait(lock);
lock.Unlock();
__u64 start = journaler->get_read_pos();
__u64 end = journaler->get_write_pos();
__u64 len = end-start;
cout << "journal is " << start << "~" << len << std::endl;
Filer filer(objecter);
bufferlist bl;
filer.read(ino, &journaler->get_layout(), 0,
start, len, &bl, 0, new C_SafeCond(&lock, &cond, &done));
lock.Lock();
while (!done)
cond.Wait(lock);
lock.Unlock();
cout << "read " << bl.length() << " bytes" << std::endl;
bl.write_file("mds.journal.dump");
messenger->shutdown();
// wait for messenger to finish
rank.wait();
return 0;
}
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