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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net> | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
15 | #ifndef CEPH_MDS_EFRAGMENT_H | |
16 | #define CEPH_MDS_EFRAGMENT_H | |
17 | ||
18 | #include "../LogEvent.h" | |
19 | #include "EMetaBlob.h" | |
20 | ||
21 | struct dirfrag_rollback { | |
22 | fnode_t fnode; | |
23 | dirfrag_rollback() { } | |
24 | void encode(bufferlist& bl) const; | |
11fdf7f2 | 25 | void decode(bufferlist::const_iterator& bl); |
7c673cae FG |
26 | }; |
27 | WRITE_CLASS_ENCODER(dirfrag_rollback) | |
28 | ||
29 | class EFragment : public LogEvent { | |
30 | public: | |
31 | EMetaBlob metablob; | |
c07f9fc5 | 32 | __u8 op{0}; |
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33 | inodeno_t ino; |
34 | frag_t basefrag; | |
c07f9fc5 | 35 | __s32 bits{0}; // positive for split (from basefrag), negative for merge (to basefrag) |
11fdf7f2 | 36 | frag_vec_t orig_frags; |
7c673cae FG |
37 | bufferlist rollback; |
38 | ||
39 | EFragment() : LogEvent(EVENT_FRAGMENT) { } | |
40 | EFragment(MDLog *mdlog, int o, dirfrag_t df, int b) : | |
11fdf7f2 | 41 | LogEvent(EVENT_FRAGMENT), |
7c673cae FG |
42 | op(o), ino(df.ino), basefrag(df.frag), bits(b) { } |
43 | ||
44 | void print(ostream& out) const override { | |
45 | out << "EFragment " << op_name(op) << " " << ino << " " << basefrag << " by " << bits << " " << metablob; | |
46 | } | |
47 | ||
48 | enum { | |
49 | OP_PREPARE = 1, | |
50 | OP_COMMIT = 2, | |
51 | OP_ROLLBACK = 3, | |
52 | OP_FINISH = 4 // finish deleting orphan dirfrags | |
53 | }; | |
11fdf7f2 | 54 | static std::string_view op_name(int o) { |
7c673cae FG |
55 | switch (o) { |
56 | case OP_PREPARE: return "prepare"; | |
57 | case OP_COMMIT: return "commit"; | |
58 | case OP_ROLLBACK: return "rollback"; | |
59 | case OP_FINISH: return "finish"; | |
60 | default: return "???"; | |
61 | } | |
62 | } | |
63 | ||
64 | void add_orig_frag(frag_t df, dirfrag_rollback *drb=NULL) { | |
11fdf7f2 | 65 | using ceph::encode; |
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66 | orig_frags.push_back(df); |
67 | if (drb) | |
11fdf7f2 | 68 | encode(*drb, rollback); |
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69 | } |
70 | ||
71 | EMetaBlob *get_metablob() override { return &metablob; } | |
72 | ||
73 | void encode(bufferlist &bl, uint64_t features) const override; | |
11fdf7f2 | 74 | void decode(bufferlist::const_iterator &bl) override; |
7c673cae | 75 | void dump(Formatter *f) const override; |
9f95a23c | 76 | static void generate_test_instances(std::list<EFragment*>& ls); |
7c673cae FG |
77 | void replay(MDSRank *mds) override; |
78 | }; | |
79 | WRITE_CLASS_ENCODER_FEATURES(EFragment) | |
80 | ||
81 | #endif |