1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 #include "tools/rbd_mirror/image_replayer/PrepareRemoteImageRequest.h"
5 #include "include/rados/librados.hpp"
6 #include "cls/rbd/cls_rbd_client.h"
7 #include "common/errno.h"
8 #include "librbd/ImageCtx.h"
9 #include "librbd/Utils.h"
10 #include "tools/rbd_mirror/image_replayer/GetMirrorImageIdRequest.h"
12 #define dout_context g_ceph_context
13 #define dout_subsys ceph_subsys_rbd_mirror
15 #define dout_prefix *_dout << "rbd::mirror::image_replayer::" \
16 << "PrepareRemoteImageRequest: " << this << " " \
21 namespace image_replayer {
23 using librbd::util::create_context_callback;
24 using librbd::util::create_rados_callback;
27 void PrepareRemoteImageRequest<I>::send() {
28 get_remote_mirror_uuid();
32 void PrepareRemoteImageRequest<I>::get_remote_mirror_uuid() {
35 librados::ObjectReadOperation op;
36 librbd::cls_client::mirror_uuid_get_start(&op);
38 librados::AioCompletion *aio_comp = create_rados_callback<
39 PrepareRemoteImageRequest<I>,
40 &PrepareRemoteImageRequest<I>::handle_get_remote_mirror_uuid>(this);
41 int r = m_io_ctx.aio_operate(RBD_MIRRORING, aio_comp, &op, &m_out_bl);
47 void PrepareRemoteImageRequest<I>::handle_get_remote_mirror_uuid(int r) {
49 bufferlist::iterator it = m_out_bl.begin();
50 r = librbd::cls_client::mirror_uuid_get_finish(&it, m_remote_mirror_uuid);
51 if (r >= 0 && m_remote_mirror_uuid->empty()) {
56 dout(20) << "r=" << r << dendl;
59 dout(5) << "remote mirror uuid missing" << dendl;
61 derr << "failed to retrieve remote mirror uuid: " << cpp_strerror(r)
68 get_remote_image_id();
72 void PrepareRemoteImageRequest<I>::get_remote_image_id() {
75 Context *ctx = create_context_callback<
76 PrepareRemoteImageRequest<I>,
77 &PrepareRemoteImageRequest<I>::handle_get_remote_image_id>(this);
78 auto req = GetMirrorImageIdRequest<I>::create(m_io_ctx, m_global_image_id,
79 m_remote_image_id, ctx);
84 void PrepareRemoteImageRequest<I>::handle_get_remote_image_id(int r) {
85 dout(20) << "r=" << r << ", "
86 << "remote_image_id=" << *m_remote_image_id << dendl;
97 void PrepareRemoteImageRequest<I>::finish(int r) {
98 dout(20) << "r=" << r << dendl;
100 m_on_finish->complete(r);
104 } // namespace image_replayer
105 } // namespace mirror
108 template class rbd::mirror::image_replayer::PrepareRemoteImageRequest<librbd::ImageCtx>;