1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "librbd/io/ObjectDispatch.h"
#include "common/dout.h"
#include "librbd/AsioEngine.h"
#include "librbd/ImageCtx.h"
#include "librbd/Utils.h"
#include "librbd/io/ObjectRequest.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::io::ObjectDispatch: " << this \
<< " " << __func__ << ": "
namespace librbd {
namespace io {
using librbd::util::data_object_name;
template <typename I>
ObjectDispatch<I>::ObjectDispatch(I* image_ctx)
: m_image_ctx(image_ctx) {
}
template <typename I>
void ObjectDispatch<I>::shut_down(Context* on_finish) {
auto cct = m_image_ctx->cct;
ldout(cct, 5) << dendl;
m_image_ctx->asio_engine->post(on_finish, 0);
}
template <typename I>
bool ObjectDispatch<I>::read(
uint64_t object_no, ReadExtents* extents, IOContext io_context,
int op_flags, int read_flags, const ZTracer::Trace &parent_trace,
uint64_t* version, int* object_dispatch_flags,
DispatchResult* dispatch_result, Context** on_finish,
Context* on_dispatched) {
auto cct = m_image_ctx->cct;
ldout(cct, 20) << "object_no=" << object_no << " " << *extents << dendl;
*dispatch_result = DISPATCH_RESULT_COMPLETE;
auto req = new ObjectReadRequest<I>(m_image_ctx, object_no, extents,
io_context, op_flags, read_flags,
parent_trace, version, on_dispatched);
req->send();
return true;
}
template <typename I>
bool ObjectDispatch<I>::discard(
uint64_t object_no, uint64_t object_off, uint64_t object_len,
IOContext io_context, int discard_flags,
const ZTracer::Trace &parent_trace, int* object_dispatch_flags,
uint64_t* journal_tid, DispatchResult* dispatch_result,
Context** on_finish, Context* on_dispatched) {
auto cct = m_image_ctx->cct;
ldout(cct, 20) << data_object_name(m_image_ctx, object_no) << " "
<< object_off << "~" << object_len << dendl;
*dispatch_result = DISPATCH_RESULT_COMPLETE;
auto req = new ObjectDiscardRequest<I>(m_image_ctx, object_no, object_off,
object_len, io_context, discard_flags,
parent_trace, on_dispatched);
req->send();
return true;
}
template <typename I>
bool ObjectDispatch<I>::write(
uint64_t object_no, uint64_t object_off, ceph::bufferlist&& data,
IOContext io_context, int op_flags, int write_flags,
std::optional<uint64_t> assert_version,
const ZTracer::Trace &parent_trace, int* object_dispatch_flags,
uint64_t* journal_tid, DispatchResult* dispatch_result,
Context** on_finish, Context* on_dispatched) {
auto cct = m_image_ctx->cct;
ldout(cct, 20) << data_object_name(m_image_ctx, object_no) << " "
<< object_off << "~" << data.length() << dendl;
*dispatch_result = DISPATCH_RESULT_COMPLETE;
auto req = new ObjectWriteRequest<I>(m_image_ctx, object_no, object_off,
std::move(data), io_context, op_flags,
write_flags, assert_version,
parent_trace, on_dispatched);
req->send();
return true;
}
template <typename I>
bool ObjectDispatch<I>::write_same(
uint64_t object_no, uint64_t object_off, uint64_t object_len,
LightweightBufferExtents&& buffer_extents, ceph::bufferlist&& data,
IOContext io_context, int op_flags,
const ZTracer::Trace &parent_trace, int* object_dispatch_flags,
uint64_t* journal_tid, DispatchResult* dispatch_result,
Context** on_finish, Context* on_dispatched) {
auto cct = m_image_ctx->cct;
ldout(cct, 20) << data_object_name(m_image_ctx, object_no) << " "
<< object_off << "~" << object_len << dendl;
*dispatch_result = DISPATCH_RESULT_COMPLETE;
auto req = new ObjectWriteSameRequest<I>(m_image_ctx, object_no,
object_off, object_len,
std::move(data), io_context,
op_flags, parent_trace,
on_dispatched);
req->send();
return true;
}
template <typename I>
bool ObjectDispatch<I>::compare_and_write(
uint64_t object_no, uint64_t object_off, ceph::bufferlist&& cmp_data,
ceph::bufferlist&& write_data, IOContext io_context, int op_flags,
const ZTracer::Trace &parent_trace, uint64_t* mismatch_offset,
int* object_dispatch_flags, uint64_t* journal_tid,
DispatchResult* dispatch_result, Context** on_finish,
Context* on_dispatched) {
auto cct = m_image_ctx->cct;
ldout(cct, 20) << data_object_name(m_image_ctx, object_no) << " "
<< object_off << "~" << write_data.length() << dendl;
*dispatch_result = DISPATCH_RESULT_COMPLETE;
auto req = new ObjectCompareAndWriteRequest<I>(m_image_ctx, object_no,
object_off,
std::move(cmp_data),
std::move(write_data),
io_context, mismatch_offset,
op_flags, parent_trace,
on_dispatched);
req->send();
return true;
}
template <typename I>
bool ObjectDispatch<I>::list_snaps(
uint64_t object_no, io::Extents&& extents, SnapIds&& snap_ids,
int list_snap_flags, const ZTracer::Trace &parent_trace,
SnapshotDelta* snapshot_delta, int* object_dispatch_flags,
DispatchResult* dispatch_result, Context** on_finish,
Context* on_dispatched) {
auto cct = m_image_ctx->cct;
ldout(cct, 20) << data_object_name(m_image_ctx, object_no) << " "
<< "extents=" << extents << ", "
<< "snap_ids=" << snap_ids << dendl;
*dispatch_result = DISPATCH_RESULT_COMPLETE;
auto req = ObjectListSnapsRequest<I>::create(
m_image_ctx, object_no, std::move(extents), std::move(snap_ids),
list_snap_flags, parent_trace, snapshot_delta, on_dispatched);
req->send();
return true;
}
} // namespace io
} // namespace librbd
template class librbd::io::ObjectDispatch<librbd::ImageCtx>;
|
