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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) 2014 John Spray <john.spray@inktank.com>
*
* 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 "MDSUtility.h"
#include "RoleSelector.h"
#include <vector>
#include "mds/mdstypes.h"
#include "mds/LogEvent.h"
#include "mds/events/EMetaBlob.h"
#include "include/rados/librados.hpp"
#include "JournalFilter.h"
class JournalScanner;
/**
* Command line tool for investigating and repairing filesystems
* with damaged metadata logs
*/
class JournalTool : public MDSUtility
{
private:
MDSRoleSelector role_selector;
// Bit hacky, use this `rank` member to control behaviour of the
// various main_ functions.
mds_rank_t rank;
// when set, generate per rank dump file path
bool all_ranks = false;
std::string type;
// Entry points
int main_journal(std::vector<const char*> &argv);
int main_header(std::vector<const char*> &argv);
int main_event(std::vector<const char*> &argv);
// Shared functionality
int recover_journal();
// Journal operations
int journal_inspect();
int journal_export(std::string const &path, bool import, bool force);
int journal_reset(bool hard);
// Header operations
int header_set();
// I/O handles
librados::Rados rados;
librados::IoCtx input;
librados::IoCtx output;
bool other_pool;
// Metadata backing store manipulation
int read_lost_found(std::set<std::string> &lost);
int recover_dentries(
EMetaBlob const &metablob,
bool const dry_run,
std::set<inodeno_t> *consumed_inos);
// Splicing
int erase_region(JournalScanner const &jp, uint64_t const pos, uint64_t const length);
// Backing store helpers
void encode_fullbit_as_inode(
const EMetaBlob::fullbit &fb,
const bool bare,
bufferlist *out_bl);
int consume_inos(const std::set<inodeno_t> &inos);
//validate type
int validate_type(const std::string &type);
// generate output file path for dump/export
std::string gen_dump_file_path(const std::string &prefix);
// check if an operation (mode, command) is safe to be
// executed on all ranks.
bool can_execute_for_all_ranks(const std::string &mode,
const std::string &command);
public:
static void usage();
JournalTool() :
rank(0), other_pool(false) {}
int main(std::vector<const char*> &argv);
};
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