projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 11fdf7f2 TL |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
| 2 | // vim: ts=8 sw=2 smarttab | |
| 3 | ||
| 4 | #ifndef CEPH_LIBRBD_IMAGE_DETACH_CHILD_REQUEST_H | |
| 5 | #define CEPH_LIBRBD_IMAGE_DETACH_CHILD_REQUEST_H | |
| 6 | ||
| 7 | #include "include/int_types.h" | |
| 8 | #include "include/buffer.h" | |
| 9 | #include "include/rados/librados.hpp" | |
| 10 | #include "librbd/Types.h" | |
| 9f95a23c | 11 | #include "librbd/internal.h" |
| 11fdf7f2 TL |
12 | |
| 13 | class Context; | |
| 14 | ||
| 15 | namespace librbd { | |
| 16 | ||
| 17 | class ImageCtx; | |
| 18 | ||
| 19 | namespace image { | |
| 20 | ||
| 21 | template <typename ImageCtxT = ImageCtx> | |
| 22 | class DetachChildRequest { | |
| 23 | public: | |
| 24 | static DetachChildRequest* create(ImageCtxT& image_ctx, Context* on_finish) { | |
| 25 | return new DetachChildRequest(image_ctx, on_finish); | |
| 26 | } | |
| 27 | ||
| 28 | DetachChildRequest(ImageCtxT& image_ctx, Context* on_finish) | |
| 29 | : m_image_ctx(image_ctx), m_on_finish(on_finish) { | |
| 30 | } | |
| 31 | ~DetachChildRequest(); | |
| 32 | ||
| 33 | void send(); | |
| 34 | ||
| 35 | private: | |
| 36 | /** | |
| 37 | * @verbatim | |
| 38 | * | |
| 39 | * <start> | |
| 40 | * | | |
| 41 | * (v1) | (v2) | |
| 42 | * /--------------/ \--------------\ | |
| 43 | * | | | |
| 44 | * v v | |
| 45 | * REMOVE_CHILD CHILD_DETACH | |
| 46 | * | | | |
| 47 | * | v | |
| 48 | * | GET_SNAPSHOT | |
| 49 | * | (snapshot in-use) . | | |
| 50 | * |/. . . . . . . . . . . . . . . | | |
| 51 | * | v | |
| 52 | * | OPEN_PARENT | |
| 53 | * | | | |
| 9f95a23c TL |
54 | * | v (has more children) |
| 55 | * | REMOVE_SNAPSHOT ---------------\ | |
| 56 | * | | | | |
| 57 | * | v (noent) | | |
| 58 | * | (auto-delete when GET_PARENT_TRASH_ENTRY . . . .\| | |
| 59 | * | last child detached) | | | |
| 60 | * | v v | |
| 61 | * | REMOVE_PARENT_FROM_TRASH CLOSE_PARENT | |
| 62 | * | | | | |
| 63 | * |/------------------------------/--------------------------/ | |
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64 | * | |
| 65 | * v | |
| 66 | * <finish> | |
| 67 | * | |
| 68 | * @endverbatim | |
| 69 | */ | |
| 70 | ||
| 71 | ImageCtxT& m_image_ctx; | |
| 72 | Context* m_on_finish; | |
| 73 | ||
| 74 | librados::IoCtx m_parent_io_ctx; | |
| 75 | cls::rbd::ParentImageSpec m_parent_spec; | |
| 76 | std::string m_parent_header_name; | |
| 77 | ||
| 78 | cls::rbd::SnapshotNamespace m_parent_snap_namespace; | |
| 79 | std::string m_parent_snap_name; | |
| 80 | ||
| 81 | ImageCtxT* m_parent_image_ctx = nullptr; | |
| 82 | ||
| 83 | ceph::bufferlist m_out_bl; | |
| 9f95a23c | 84 | NoOpProgressContext m_no_op; |
| 11fdf7f2 TL |
85 | |
| 86 | void clone_v2_child_detach(); | |
| 87 | void handle_clone_v2_child_detach(int r); | |
| 88 | ||
| 89 | void clone_v2_get_snapshot(); | |
| 90 | void handle_clone_v2_get_snapshot(int r); | |
| 91 | ||
| 92 | void clone_v2_open_parent(); | |
| 93 | void handle_clone_v2_open_parent(int r); | |
| 94 | ||
| 95 | void clone_v2_remove_snapshot(); | |
| 96 | void handle_clone_v2_remove_snapshot(int r); | |
| 97 | ||
| 9f95a23c TL |
98 | void clone_v2_get_parent_trash_entry(); |
| 99 | void handle_clone_v2_get_parent_trash_entry(int r); | |
| 100 | ||
| 101 | void clone_v2_remove_parent_from_trash(); | |
| 102 | void handle_clone_v2_remove_parent_from_trash(int r); | |
| 103 | ||
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104 | void clone_v2_close_parent(); |
| 105 | void handle_clone_v2_close_parent(int r); | |
| 106 | ||
| 107 | void clone_v1_remove_child(); | |
| 108 | void handle_clone_v1_remove_child(int r); | |
| 109 | ||
| 110 | void finish(int r); | |
| 111 | ||
| 112 | }; | |
| 113 | ||
| 114 | } // namespace image | |
| 115 | } // namespace librbd | |
| 116 | ||
| 117 | extern template class librbd::image::DetachChildRequest<librbd::ImageCtx>; | |
| 118 | ||
| 119 | #endif // CEPH_LIBRBD_IMAGE_DETACH_CHILD_REQUEST_H |