1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 #ifndef RBD_MIRROR_IMAGE_SYNC_H
5 #define RBD_MIRROR_IMAGE_SYNC_H
7 #include "include/int_types.h"
8 #include "librbd/ImageCtx.h"
9 #include "librbd/journal/TypeTraits.h"
10 #include "common/Mutex.h"
11 #include "tools/rbd_mirror/BaseRequest.h"
19 namespace journal
{ class Journaler
; }
20 namespace librbd
{ namespace journal
{ struct MirrorPeerClientMeta
; } }
25 class ProgressContext
;
27 template <typename
> class InstanceWatcher
;
29 namespace image_sync
{ template <typename
> class ImageCopyRequest
; }
30 namespace image_sync
{ template <typename
> class SnapshotCopyRequest
; }
32 template <typename ImageCtxT
= librbd::ImageCtx
>
33 class ImageSync
: public BaseRequest
{
35 typedef librbd::journal::TypeTraits
<ImageCtxT
> TypeTraits
;
36 typedef typename
TypeTraits::Journaler Journaler
;
37 typedef librbd::journal::MirrorPeerClientMeta MirrorPeerClientMeta
;
39 static ImageSync
* create(ImageCtxT
*local_image_ctx
,
40 ImageCtxT
*remote_image_ctx
, SafeTimer
*timer
,
41 Mutex
*timer_lock
, const std::string
&mirror_uuid
,
43 MirrorPeerClientMeta
*client_meta
,
44 ContextWQ
*work_queue
,
45 InstanceWatcher
<ImageCtxT
> *instance_watcher
,
47 ProgressContext
*progress_ctx
= nullptr) {
48 return new ImageSync(local_image_ctx
, remote_image_ctx
, timer
, timer_lock
,
49 mirror_uuid
, journaler
, client_meta
, work_queue
,
50 instance_watcher
, on_finish
, progress_ctx
);
53 ImageSync(ImageCtxT
*local_image_ctx
, ImageCtxT
*remote_image_ctx
,
54 SafeTimer
*timer
, Mutex
*timer_lock
, const std::string
&mirror_uuid
,
55 Journaler
*journaler
, MirrorPeerClientMeta
*client_meta
,
56 ContextWQ
*work_queue
, InstanceWatcher
<ImageCtxT
> *instance_watcher
,
57 Context
*on_finish
, ProgressContext
*progress_ctx
= nullptr);
58 ~ImageSync() override
;
61 void cancel() override
;
64 void finish(int r
) override
;
76 * PRUNE_CATCH_UP_SYNC_POINT
79 * CREATE_SYNC_POINT (skip if already exists and
85 * COPY_IMAGE . . . . . . . . . . . . . .
88 * COPY_OBJECT_MAP (skip if object .
91 * REFRESH_OBJECT_MAP (skip if object .
94 * PRUNE_SYNC_POINTS . (image sync canceled)
97 * <finish> < . . . . . . . . . . . . . .
102 typedef std::vector
<librados::snap_t
> SnapIds
;
103 typedef std::map
<librados::snap_t
, SnapIds
> SnapMap
;
105 ImageCtxT
*m_local_image_ctx
;
106 ImageCtxT
*m_remote_image_ctx
;
109 std::string m_mirror_uuid
;
110 Journaler
*m_journaler
;
111 MirrorPeerClientMeta
*m_client_meta
;
112 ContextWQ
*m_work_queue
;
113 InstanceWatcher
<ImageCtxT
> *m_instance_watcher
;
114 ProgressContext
*m_progress_ctx
;
119 bool m_canceled
= false;
121 image_sync::SnapshotCopyRequest
<ImageCtxT
> *m_snapshot_copy_request
= nullptr;
122 image_sync::ImageCopyRequest
<ImageCtxT
> *m_image_copy_request
= nullptr;
123 decltype(ImageCtxT::object_map
) m_object_map
= nullptr;
125 void send_notify_sync_request();
126 void handle_notify_sync_request(int r
);
128 void send_prune_catch_up_sync_point();
129 void handle_prune_catch_up_sync_point(int r
);
131 void send_create_sync_point();
132 void handle_create_sync_point(int r
);
134 void send_copy_snapshots();
135 void handle_copy_snapshots(int r
);
137 void send_copy_image();
138 void handle_copy_image(int r
);
140 void send_copy_object_map();
141 void handle_copy_object_map(int r
);
143 void send_refresh_object_map();
144 void handle_refresh_object_map(int r
);
146 void send_prune_sync_points();
147 void handle_prune_sync_points(int r
);
149 void update_progress(const std::string
&description
);
152 } // namespace mirror
155 extern template class rbd::mirror::ImageSync
<librbd::ImageCtx
>;
157 #endif // RBD_MIRROR_IMAGE_SYNC_H