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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) 2018 Red Hat
*
* 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.
*
*/
#ifndef OPEN_FILE_TABLE_H
#define OPEN_FILE_TABLE_H
#include "mdstypes.h"
#include "Anchor.h"
#include "MDSContext.h"
class CDir;
class CInode;
class MDSRank;
class OpenFileTable
{
public:
explicit OpenFileTable(MDSRank *m);
~OpenFileTable();
void add_inode(CInode *in);
void remove_inode(CInode *in);
void add_dirfrag(CDir *dir);
void remove_dirfrag(CDir *dir);
void notify_link(CInode *in);
void notify_unlink(CInode *in);
bool is_any_dirty() const { return !dirty_items.empty(); }
void commit(MDSContext *c, uint64_t log_seq, int op_prio);
uint64_t get_committed_log_seq() const { return committed_log_seq; }
bool is_any_committing() const { return num_pending_commit > 0; }
void load(MDSContext *c);
bool is_loaded() const { return load_done; }
void wait_for_load(MDSContext *c) {
ceph_assert(!load_done);
waiting_for_load.push_back(c);
}
bool prefetch_inodes();
bool is_prefetched() const { return prefetch_state == DONE; }
void wait_for_prefetch(MDSContext *c) {
ceph_assert(!is_prefetched());
waiting_for_prefetch.push_back(c);
}
bool should_log_open(CInode *in);
void note_destroyed_inos(uint64_t seq, const vector<inodeno_t>& inos);
void trim_destroyed_inos(uint64_t seq);
protected:
friend class C_IO_OFT_Recover;
friend class C_IO_OFT_Load;
friend class C_IO_OFT_Save;
friend class C_IO_OFT_Journal;
friend class C_OFT_OpenInoFinish;
uint64_t MAX_ITEMS_PER_OBJ = g_conf().get_val<uint64_t>("osd_deep_scrub_large_omap_object_key_threshold");
static const unsigned MAX_OBJECTS = 1024; // (1024 * osd_deep_scrub_large_omap_object_key_threshold) items at most
static const int DIRTY_NEW = -1;
static const int DIRTY_UNDEF = -2;
unsigned num_pending_commit = 0;
void _encode_header(bufferlist& bl, int j_state);
void _commit_finish(int r, uint64_t log_seq, MDSContext *fin);
void _journal_finish(int r, uint64_t log_seq, MDSContext *fin,
std::map<unsigned, std::vector<ObjectOperation> >& ops);
void get_ref(CInode *in, frag_t fg=-1U);
void put_ref(CInode *in, frag_t fg=-1U);
object_t get_object_name(unsigned idx) const;
void _reset_states() {
omap_num_objs = 0;
omap_num_items.resize(0);
journal_state = JOURNAL_NONE;
loaded_journals.clear();
loaded_anchor_map.clear();
}
void _read_omap_values(const std::string& key, unsigned idx, bool first);
void _load_finish(int op_r, int header_r, int values_r,
unsigned idx, bool first, bool more,
bufferlist &header_bl,
std::map<std::string, bufferlist> &values);
void _recover_finish(int r);
void _open_ino_finish(inodeno_t ino, int r);
void _prefetch_inodes();
void _prefetch_dirfrags();
void _get_ancestors(const Anchor& parent,
vector<inode_backpointer_t>& ancestors,
mds_rank_t& auth_hint);
MDSRank *mds;
version_t omap_version = 0;
unsigned omap_num_objs = 0;
std::vector<unsigned> omap_num_items;
map<inodeno_t, OpenedAnchor> anchor_map;
std::map<inodeno_t, int> dirty_items; // ino -> dirty state
uint64_t committed_log_seq = 0;
uint64_t committing_log_seq = 0;
enum {
JOURNAL_NONE = 0,
JOURNAL_START = 1,
JOURNAL_FINISH = 2,
};
int journal_state = 0;
std::vector<std::map<std::string, bufferlist> > loaded_journals;
map<inodeno_t, RecoveredAnchor> loaded_anchor_map;
MDSContext::vec waiting_for_load;
bool load_done = false;
enum {
DIR_INODES = 1,
DIRFRAGS = 2,
FILE_INODES = 3,
DONE = 4,
};
unsigned prefetch_state = 0;
unsigned num_opening_inodes = 0;
MDSContext::vec waiting_for_prefetch;
std::map<uint64_t, vector<inodeno_t> > logseg_destroyed_inos;
std::set<inodeno_t> destroyed_inos_set;
std::unique_ptr<PerfCounters> logger;
};
#endif
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