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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.
*
*/
#ifndef CEPH_MDS_EFRAGMENT_H
#define CEPH_MDS_EFRAGMENT_H
#include "../LogEvent.h"
#include "EMetaBlob.h"
class EFragment : public LogEvent {
public:
EMetaBlob metablob;
__u8 op;
inodeno_t ino;
frag_t basefrag;
__s32 bits; // positive for split (from basefrag), negative for merge (to basefrag)
EFragment() : LogEvent(EVENT_FRAGMENT) { }
EFragment(MDLog *mdlog, int o, inodeno_t i, frag_t bf, int b) :
LogEvent(EVENT_FRAGMENT), metablob(mdlog),
op(o), ino(i), basefrag(bf), bits(b) { }
void print(ostream& out) const {
out << "EFragment " << op_name(op) << " " << ino << " " << basefrag << " by " << bits << " " << metablob;
}
enum {
OP_PREPARE = 1,
OP_COMMIT = 2,
OP_ROLLBACK = 3,
OP_ONESHOT = 4, // (legacy) PREPARE+COMMIT
};
const char *op_name(int o) const {
switch (o) {
case OP_PREPARE: return "prepare";
case OP_COMMIT: return "commit";
case OP_ROLLBACK: return "rollback";
default: return "???";
}
}
void encode(bufferlist &bl) const;
void decode(bufferlist::iterator &bl);
void dump(Formatter *f) const;
static void generate_test_instances(list<EFragment*>& ls);
void replay(MDS *mds);
};
#endif
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