1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 * Ceph - scalable distributed file system
6 * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
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.
15 #ifndef CEPH_MDS_SNAP_H
16 #define CEPH_MDS_SNAP_H
19 #include "common/snap_types.h"
22 * generic snap descriptor.
30 string long_name; ///< cached _$ino_$name
32 void encode(bufferlist &bl) const;
33 void decode(bufferlist::iterator &bl);
34 void dump(Formatter *f) const;
35 static void generate_test_instances(list<SnapInfo*>& ls);
37 const string& get_long_name();
39 WRITE_CLASS_ENCODER(SnapInfo)
41 ostream& operator<<(ostream& out, const SnapInfo &sn);
45 * SnapRealm - a subtree that shares the same set of snapshots.
53 #include "Capability.h"
59 void encode(bufferlist &bl) const;
60 void decode(bufferlist::iterator &bl);
61 void dump(Formatter *f) const;
62 static void generate_test_instances(list<snaplink_t*>& ls);
64 WRITE_CLASS_ENCODER(snaplink_t)
66 ostream& operator<<(ostream& out, const snaplink_t &l);
69 // carry data about a specific version of a SnapRealm
71 snapid_t seq; // basically, a version/seq # for changes to _this_ realm.
72 snapid_t created; // when this realm was created.
73 snapid_t last_created; // last snap created in _this_ realm.
74 snapid_t last_destroyed; // seq for last removal
75 snapid_t current_parent_since;
76 map<snapid_t, SnapInfo> snaps;
77 map<snapid_t, snaplink_t> past_parents; // key is "last" (or NOSNAP)
81 last_created(0), last_destroyed(0),
82 current_parent_since(1)
85 void encode(bufferlist &bl) const;
86 void decode(bufferlist::iterator &bl);
87 void dump(Formatter *f) const;
88 static void generate_test_instances(list<sr_t*>& ls);
90 WRITE_CLASS_ENCODER(sr_t)