X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Flibrbd%2Fimage%2FRefreshRequest.h;fp=src%2Fceph%2Fsrc%2Flibrbd%2Fimage%2FRefreshRequest.h;h=286703e39d57d9e14e2aad51aee8a51aca6274fd;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git diff --git a/src/ceph/src/librbd/image/RefreshRequest.h b/src/ceph/src/librbd/image/RefreshRequest.h new file mode 100644 index 0000000..286703e --- /dev/null +++ b/src/ceph/src/librbd/image/RefreshRequest.h @@ -0,0 +1,231 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#ifndef CEPH_LIBRBD_IMAGE_REFRESH_REQUEST_H +#define CEPH_LIBRBD_IMAGE_REFRESH_REQUEST_H + +#include "include/int_types.h" +#include "include/buffer.h" +#include "include/utime.h" +#include "common/snap_types.h" +#include "cls/lock/cls_lock_types.h" +#include "librbd/ImageCtx.h" +#include "librbd/Types.h" +#include +#include + +class Context; + +namespace librbd { + +class ImageCtx; + +namespace image { + +template class RefreshParentRequest; + +template +class RefreshRequest { +public: + static RefreshRequest *create(ImageCtxT &image_ctx, bool acquiring_lock, + bool skip_open_parent, Context *on_finish) { + return new RefreshRequest(image_ctx, acquiring_lock, skip_open_parent, + on_finish); + } + + RefreshRequest(ImageCtxT &image_ctx, bool acquiring_lock, + bool skip_open_parent, Context *on_finish); + ~RefreshRequest(); + + void send(); + +private: + /** + * @verbatim + * + * + * | + * | (v1) + * |-----> V1_READ_HEADER ---> V1_GET_SNAPSHOTS ---> V1_GET_LOCKS + * | | + * | (v2) v + * \-----> V2_GET_MUTABLE_METADATA + * | | + * v | + * V2_GET_FLAGS | + * | | + * v | + * V2_GET_GROUP | + * | | + * v | + * V2_GET_SNAPSHOTS (skip if no snaps) | + * | | + * v | + * V2_GET_SNAP_TIMESTAMPS | + * | | + * v | + * V2_GET_SNAP_NAMESPACES | + * | | + * v | + * V2_REFRESH_PARENT (skip if no parent or | + * | refresh not needed) | + * v | + * V2_INIT_EXCLUSIVE_LOCK (skip if lock | + * | active or disabled) | + * v | + * V2_OPEN_OBJECT_MAP (skip if map | + * | active or disabled) | + * v | + * V2_OPEN_JOURNAL (skip if journal | + * | active or disabled) | + * v | + * V2_BLOCK_WRITES (skip if journal not | + * | disabled) | + * v | + * | + * | | + * v | + * V2_FINALIZE_REFRESH_PARENT (skip if refresh | + * | not needed) | + * (error) v | + * * * * * > V2_SHUT_DOWN_EXCLUSIVE_LOCK (skip if lock | + * | active or enabled) | + * v | + * V2_CLOSE_JOURNAL (skip if journal inactive | + * | or enabled) | + * v | + * V2_CLOSE_OBJECT_MAP (skip if map inactive | + * | or enabled) | + * | | + * \-------------------\/--------------------/ + * | + * v + * FLUSH (skip if no new + * | snapshots) + * v + * + * + * @endverbatim + */ + + ImageCtxT &m_image_ctx; + bool m_acquiring_lock; + bool m_skip_open_parent_image; + Context *m_on_finish; + + int m_error_result; + bool m_flush_aio; + decltype(m_image_ctx.exclusive_lock) m_exclusive_lock; + decltype(m_image_ctx.object_map) m_object_map; + decltype(m_image_ctx.journal) m_journal; + RefreshParentRequest *m_refresh_parent; + + bufferlist m_out_bl; + + uint8_t m_order; + uint64_t m_size; + uint64_t m_features; + uint64_t m_incompatible_features; + uint64_t m_flags; + std::string m_object_prefix; + ParentInfo m_parent_md; + cls::rbd::GroupSpec m_group_spec; + + ::SnapContext m_snapc; + std::vector m_snap_names; + std::vector m_snap_namespaces; + std::vector m_snap_sizes; + std::vector m_snap_parents; + std::vector m_snap_protection; + std::vector m_snap_flags; + std::vector m_snap_timestamps; + + std::map m_lockers; + std::string m_lock_tag; + bool m_exclusive_locked; + + bool m_blocked_writes = false; + bool m_incomplete_update = false; + + void send_v1_read_header(); + Context *handle_v1_read_header(int *result); + + void send_v1_get_snapshots(); + Context *handle_v1_get_snapshots(int *result); + + void send_v1_get_locks(); + Context *handle_v1_get_locks(int *result); + + void send_v1_apply(); + Context *handle_v1_apply(int *result); + + void send_v2_get_mutable_metadata(); + Context *handle_v2_get_mutable_metadata(int *result); + + void send_v2_get_flags(); + Context *handle_v2_get_flags(int *result); + + void send_v2_get_group(); + Context *handle_v2_get_group(int *result); + + void send_v2_get_snapshots(); + Context *handle_v2_get_snapshots(int *result); + + void send_v2_get_snap_namespaces(); + Context *handle_v2_get_snap_namespaces(int *result); + + void send_v2_get_snap_timestamps(); + Context *handle_v2_get_snap_timestamps(int *result); + + void send_v2_refresh_parent(); + Context *handle_v2_refresh_parent(int *result); + + void send_v2_init_exclusive_lock(); + Context *handle_v2_init_exclusive_lock(int *result); + + void send_v2_open_journal(); + Context *handle_v2_open_journal(int *result); + + void send_v2_block_writes(); + Context *handle_v2_block_writes(int *result); + + void send_v2_open_object_map(); + Context *handle_v2_open_object_map(int *result); + + void send_v2_apply(); + Context *handle_v2_apply(int *result); + + Context *send_v2_finalize_refresh_parent(); + Context *handle_v2_finalize_refresh_parent(int *result); + + Context *send_v2_shut_down_exclusive_lock(); + Context *handle_v2_shut_down_exclusive_lock(int *result); + + Context *send_v2_close_journal(); + Context *handle_v2_close_journal(int *result); + + Context *send_v2_close_object_map(); + Context *handle_v2_close_object_map(int *result); + + Context *send_flush_aio(); + Context *handle_flush_aio(int *result); + + Context *handle_error(int *result); + + void save_result(int *result) { + if (m_error_result == 0 && *result < 0) { + m_error_result = *result; + } + } + + void apply(); + int get_parent_info(uint64_t snap_id, ParentInfo *parent_md); +}; + +} // namespace image +} // namespace librbd + +extern template class librbd::image::RefreshRequest; + +#endif // CEPH_LIBRBD_IMAGE_REFRESH_REQUEST_H