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git.proxmox.com Git - ceph.git/blob - ceph/src/librbd/operation/DisableFeaturesRequest.h
1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 #ifndef CEPH_LIBRBD_OPERATION_DISABLE_FEATURES_REQUEST_H
5 #define CEPH_LIBRBD_OPERATION_DISABLE_FEATURES_REQUEST_H
7 #include "librbd/ImageCtx.h"
8 #include "librbd/operation/Request.h"
9 #include "cls/rbd/cls_rbd_client.h"
19 template <typename ImageCtxT
= ImageCtx
>
20 class DisableFeaturesRequest
: public Request
<ImageCtxT
> {
22 static DisableFeaturesRequest
*create(ImageCtxT
&image_ctx
, Context
*on_finish
,
23 uint64_t journal_op_tid
,
24 uint64_t features
, bool force
) {
25 return new DisableFeaturesRequest(image_ctx
, on_finish
, journal_op_tid
,
29 DisableFeaturesRequest(ImageCtxT
&image_ctx
, Context
*on_finish
,
30 uint64_t journal_op_tid
, uint64_t features
, bool force
);
33 void send_op() override
;
34 bool should_complete(int r
) override
;
35 bool can_affect_io() const override
{
38 journal::Event
create_event(uint64_t op_tid
) const override
{
39 return journal::UpdateFeaturesEvent(op_tid
, m_features
, false);
44 * DisableFeatures goes through the following state machine:
57 * STATE_ACQUIRE_EXCLUSIVE_LOCK (skip if not
59 * | (disbling journaling)
60 * \-------------------\
63 * | STATE_GET_MIRROR_MODE
66 * | journaling) STATE_GET_MIRROR_IMAGE
69 * | STATE_DISABLE_MIRROR_IMAGE (skip if not
72 * | STATE_CLOSE_JOURNAL
75 * | STATE_REMOVE_JOURNAL
77 * |/-------------------/
80 * STATE_APPEND_OP_EVENT (skip if journaling
83 * STATE_REMOVE_OBJECT_MAP (skip if not
84 * | disabling object map)
95 * STATE_REALEASE_EXCLUSIVE_LOCK (skip if not
108 bool m_acquired_lock
= false;
109 bool m_writes_blocked
= false;
110 bool m_image_lock_acquired
= false;
111 bool m_requests_blocked
= false;
113 uint64_t m_new_features
= 0;
114 uint64_t m_disable_flags
= 0;
115 uint64_t m_features_mask
= 0;
117 decltype(ImageCtxT::journal
) m_journal
= nullptr;
118 cls::rbd::MirrorMode m_mirror_mode
= cls::rbd::MIRROR_MODE_DISABLED
;
121 void send_prepare_lock();
122 Context
*handle_prepare_lock(int *result
);
124 void send_block_writes();
125 Context
*handle_block_writes(int *result
);
127 Context
*send_acquire_exclusive_lock(int *result
);
128 Context
*handle_acquire_exclusive_lock(int *result
);
130 void send_get_mirror_mode();
131 Context
*handle_get_mirror_mode(int *result
);
133 void send_get_mirror_image();
134 Context
*handle_get_mirror_image(int *result
);
136 void send_disable_mirror_image();
137 Context
*handle_disable_mirror_image(int *result
);
139 void send_close_journal();
140 Context
*handle_close_journal(int *result
);
142 void send_remove_journal();
143 Context
*handle_remove_journal(int *result
);
145 void send_append_op_event();
146 Context
*handle_append_op_event(int *result
);
148 void send_remove_object_map();
149 Context
*handle_remove_object_map(int *result
);
151 void send_set_features();
152 Context
*handle_set_features(int *result
);
154 void send_update_flags();
155 Context
*handle_update_flags(int *result
);
157 void send_notify_update();
158 Context
*handle_notify_update(int *result
);
160 void send_release_exclusive_lock();
161 Context
*handle_release_exclusive_lock(int *result
);
163 Context
*handle_finish(int r
);
166 } // namespace operation
167 } // namespace librbd
169 extern template class librbd::operation::DisableFeaturesRequest
<librbd::ImageCtx
>;
171 #endif // CEPH_LIBRBD_OPERATION_DISABLE_FEATURES_REQUEST_H