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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include "librbd/object_map/RemoveRequest.h" | |
5 | #include "common/dout.h" | |
6 | #include "common/errno.h" | |
7 | #include "cls/rbd/cls_rbd_client.h" | |
8 | #include "librbd/ImageCtx.h" | |
9 | #include "librbd/ObjectMap.h" | |
10 | #include "librbd/Utils.h" | |
11fdf7f2 | 11 | #include "include/ceph_assert.h" |
7c673cae FG |
12 | |
13 | #define dout_subsys ceph_subsys_rbd | |
14 | #undef dout_prefix | |
15 | #define dout_prefix *_dout << "librbd::object_map::RemoveRequest: " | |
16 | ||
17 | namespace librbd { | |
18 | namespace object_map { | |
19 | ||
20 | using util::create_rados_callback; | |
21 | ||
22 | template <typename I> | |
23 | RemoveRequest<I>::RemoveRequest(I *image_ctx, Context *on_finish) | |
24 | : m_image_ctx(image_ctx), m_on_finish(on_finish), | |
25 | m_lock("object_map::RemoveRequest::m_lock") { | |
26 | } | |
27 | ||
28 | template <typename I> | |
29 | void RemoveRequest<I>::send() { | |
30 | send_remove_object_map(); | |
31 | } | |
32 | ||
33 | template <typename I> | |
34 | void RemoveRequest<I>::send_remove_object_map() { | |
35 | CephContext *cct = m_image_ctx->cct; | |
36 | ldout(cct, 20) << __func__ << dendl; | |
37 | ||
38 | RWLock::WLocker snap_locker(m_image_ctx->snap_lock); | |
39 | std::vector<uint64_t> snap_ids; | |
40 | snap_ids.push_back(CEPH_NOSNAP); | |
41 | for (auto it : m_image_ctx->snap_info) { | |
42 | snap_ids.push_back(it.first); | |
43 | } | |
44 | ||
45 | Mutex::Locker locker(m_lock); | |
11fdf7f2 | 46 | ceph_assert(m_ref_counter == 0); |
7c673cae FG |
47 | |
48 | for (auto snap_id : snap_ids) { | |
49 | m_ref_counter++; | |
50 | std::string oid(ObjectMap<>::object_map_name(m_image_ctx->id, snap_id)); | |
51 | using klass = RemoveRequest<I>; | |
52 | librados::AioCompletion *comp = | |
53 | create_rados_callback<klass, &klass::handle_remove_object_map>(this); | |
54 | ||
55 | int r = m_image_ctx->md_ctx.aio_remove(oid, comp); | |
11fdf7f2 | 56 | ceph_assert(r == 0); |
7c673cae FG |
57 | comp->release(); |
58 | } | |
59 | } | |
60 | ||
61 | template <typename I> | |
62 | Context *RemoveRequest<I>::handle_remove_object_map(int *result) { | |
63 | CephContext *cct = m_image_ctx->cct; | |
64 | ldout(cct, 20) << __func__ << ": r=" << *result << dendl; | |
65 | ||
66 | { | |
67 | Mutex::Locker locker(m_lock); | |
11fdf7f2 | 68 | ceph_assert(m_ref_counter > 0); |
7c673cae FG |
69 | m_ref_counter--; |
70 | ||
71 | if (*result < 0 && *result != -ENOENT) { | |
72 | lderr(cct) << "failed to remove object map: " << cpp_strerror(*result) | |
73 | << dendl; | |
74 | m_error_result = *result; | |
75 | } | |
76 | if (m_ref_counter > 0) { | |
77 | return nullptr; | |
78 | } | |
79 | } | |
80 | if (m_error_result < 0) { | |
81 | *result = m_error_result; | |
82 | } | |
83 | return m_on_finish; | |
84 | } | |
85 | ||
86 | } // namespace object_map | |
87 | } // namespace librbd | |
88 | ||
89 | template class librbd::object_map::RemoveRequest<librbd::ImageCtx>; |