--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "include/compat.h"
+#include "BootstrapRequest.h"
+#include "CloseImageRequest.h"
+#include "CreateImageRequest.h"
+#include "IsPrimaryRequest.h"
+#include "OpenImageRequest.h"
+#include "OpenLocalImageRequest.h"
+#include "common/debug.h"
+#include "common/dout.h"
+#include "common/errno.h"
+#include "common/WorkQueue.h"
+#include "cls/rbd/cls_rbd_client.h"
+#include "journal/Journaler.h"
+#include "librbd/ImageCtx.h"
+#include "librbd/ImageState.h"
+#include "librbd/internal.h"
+#include "librbd/Journal.h"
+#include "librbd/Utils.h"
+#include "librbd/journal/Types.h"
+#include "tools/rbd_mirror/ProgressContext.h"
+#include "tools/rbd_mirror/ImageSync.h"
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_rbd_mirror
+#undef dout_prefix
+#define dout_prefix *_dout << "rbd::mirror::image_replayer::BootstrapRequest: " \
+ << this << " " << __func__
+
+namespace rbd {
+namespace mirror {
+namespace image_replayer {
+
+using librbd::util::create_context_callback;
+using librbd::util::create_rados_callback;
+using librbd::util::unique_lock_name;
+
+template <typename I>
+BootstrapRequest<I>::BootstrapRequest(
+ librados::IoCtx &local_io_ctx,
+ librados::IoCtx &remote_io_ctx,
+ InstanceWatcher<I> *instance_watcher,
+ I **local_image_ctx,
+ const std::string &local_image_id,
+ const std::string &remote_image_id,
+ const std::string &global_image_id,
+ ContextWQ *work_queue, SafeTimer *timer,
+ Mutex *timer_lock,
+ const std::string &local_mirror_uuid,
+ const std::string &remote_mirror_uuid,
+ Journaler *journaler,
+ MirrorPeerClientMeta *client_meta,
+ Context *on_finish,
+ bool *do_resync,
+ rbd::mirror::ProgressContext *progress_ctx)
+ : BaseRequest("rbd::mirror::image_replayer::BootstrapRequest",
+ reinterpret_cast<CephContext*>(local_io_ctx.cct()), on_finish),
+ m_local_io_ctx(local_io_ctx), m_remote_io_ctx(remote_io_ctx),
+ m_instance_watcher(instance_watcher), m_local_image_ctx(local_image_ctx),
+ m_local_image_id(local_image_id), m_remote_image_id(remote_image_id),
+ m_global_image_id(global_image_id), m_work_queue(work_queue),
+ m_timer(timer), m_timer_lock(timer_lock),
+ m_local_mirror_uuid(local_mirror_uuid),
+ m_remote_mirror_uuid(remote_mirror_uuid), m_journaler(journaler),
+ m_client_meta(client_meta), m_progress_ctx(progress_ctx),
+ m_do_resync(do_resync),
+ m_lock(unique_lock_name("BootstrapRequest::m_lock", this)) {
+}
+
+template <typename I>
+BootstrapRequest<I>::~BootstrapRequest() {
+ assert(m_remote_image_ctx == nullptr);
+}
+
+template <typename I>
+bool BootstrapRequest<I>::is_syncing() const {
+ Mutex::Locker locker(m_lock);
+ return (m_image_sync != nullptr);
+}
+
+template <typename I>
+void BootstrapRequest<I>::send() {
+ *m_do_resync = false;
+
+ get_remote_tag_class();
+}
+
+template <typename I>
+void BootstrapRequest<I>::cancel() {
+ dout(20) << dendl;
+
+ Mutex::Locker locker(m_lock);
+ m_canceled = true;
+
+ if (m_image_sync != nullptr) {
+ m_image_sync->cancel();
+ }
+}
+
+template <typename I>
+void BootstrapRequest<I>::get_remote_tag_class() {
+ dout(20) << dendl;
+
+ update_progress("GET_REMOTE_TAG_CLASS");
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_get_remote_tag_class>(
+ this);
+ m_journaler->get_client(librbd::Journal<>::IMAGE_CLIENT_ID, &m_client, ctx);
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_get_remote_tag_class(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ if (r < 0) {
+ derr << ": failed to retrieve remote client: " << cpp_strerror(r) << dendl;
+ finish(r);
+ return;
+ }
+
+ librbd::journal::ClientData client_data;
+ bufferlist::iterator it = m_client.data.begin();
+ try {
+ ::decode(client_data, it);
+ } catch (const buffer::error &err) {
+ derr << ": failed to decode remote client meta data: " << err.what()
+ << dendl;
+ finish(-EBADMSG);
+ return;
+ }
+
+ librbd::journal::ImageClientMeta *client_meta =
+ boost::get<librbd::journal::ImageClientMeta>(&client_data.client_meta);
+ if (client_meta == nullptr) {
+ derr << ": unknown remote client registration" << dendl;
+ finish(-EINVAL);
+ return;
+ }
+
+ m_remote_tag_class = client_meta->tag_class;
+ dout(10) << ": remote tag class=" << m_remote_tag_class << dendl;
+
+ open_remote_image();
+}
+
+template <typename I>
+void BootstrapRequest<I>::open_remote_image() {
+ dout(20) << dendl;
+
+ update_progress("OPEN_REMOTE_IMAGE");
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_open_remote_image>(
+ this);
+ OpenImageRequest<I> *request = OpenImageRequest<I>::create(
+ m_remote_io_ctx, &m_remote_image_ctx, m_remote_image_id, false,
+ ctx);
+ request->send();
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_open_remote_image(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ if (r < 0) {
+ derr << ": failed to open remote image: " << cpp_strerror(r) << dendl;
+ assert(m_remote_image_ctx == nullptr);
+ finish(r);
+ return;
+ }
+
+ get_client();
+}
+
+template <typename I>
+void BootstrapRequest<I>::get_client() {
+ dout(20) << dendl;
+
+ update_progress("GET_CLIENT");
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_get_client>(
+ this);
+ m_journaler->get_client(m_local_mirror_uuid, &m_client, ctx);
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_get_client(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ if (r == -ENOENT) {
+ dout(10) << ": client not registered" << dendl;
+ } else if (r < 0) {
+ derr << ": failed to retrieve client: " << cpp_strerror(r) << dendl;
+ m_ret_val = r;
+ close_remote_image();
+ return;
+ } else if (decode_client_meta()) {
+ // skip registration if it already exists
+ is_primary();
+ return;
+ }
+
+ register_client();
+}
+
+template <typename I>
+void BootstrapRequest<I>::register_client() {
+ dout(20) << dendl;
+
+ update_progress("REGISTER_CLIENT");
+
+ librbd::journal::MirrorPeerClientMeta mirror_peer_client_meta{
+ m_local_image_id};
+ mirror_peer_client_meta.state = librbd::journal::MIRROR_PEER_STATE_REPLAYING;
+
+ librbd::journal::ClientData client_data{mirror_peer_client_meta};
+ bufferlist client_data_bl;
+ ::encode(client_data, client_data_bl);
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_register_client>(
+ this);
+ m_journaler->register_client(client_data_bl, ctx);
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_register_client(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ if (r < 0) {
+ derr << ": failed to register with remote journal: " << cpp_strerror(r)
+ << dendl;
+ m_ret_val = r;
+ close_remote_image();
+ return;
+ }
+
+ m_client = {};
+ *m_client_meta = librbd::journal::MirrorPeerClientMeta(m_local_image_id);
+ m_client_meta->state = librbd::journal::MIRROR_PEER_STATE_REPLAYING;
+
+ is_primary();
+}
+
+template <typename I>
+void BootstrapRequest<I>::is_primary() {
+ dout(20) << dendl;
+
+ update_progress("OPEN_REMOTE_IMAGE");
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_is_primary>(
+ this);
+ IsPrimaryRequest<I> *request = IsPrimaryRequest<I>::create(m_remote_image_ctx,
+ &m_primary, ctx);
+ request->send();
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_is_primary(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ if (r < 0) {
+ derr << ": error querying remote image primary status: " << cpp_strerror(r)
+ << dendl;
+ m_ret_val = r;
+ close_remote_image();
+ return;
+ }
+
+ if (!m_primary) {
+ dout(5) << ": remote image is not primary -- skipping image replay"
+ << dendl;
+ m_ret_val = -EREMOTEIO;
+ update_client_state();
+ return;
+ }
+
+ if (m_local_image_id.empty()) {
+ update_client_image();
+ return;
+ }
+
+ open_local_image();
+}
+
+template <typename I>
+void BootstrapRequest<I>::update_client_state() {
+ if (m_client_meta->state == librbd::journal::MIRROR_PEER_STATE_REPLAYING) {
+ // state already set for replaying upon failover
+ close_remote_image();
+ return;
+ }
+
+ dout(20) << dendl;
+ update_progress("UPDATE_CLIENT_STATE");
+
+ librbd::journal::MirrorPeerClientMeta client_meta(*m_client_meta);
+ client_meta.state = librbd::journal::MIRROR_PEER_STATE_REPLAYING;
+
+ librbd::journal::ClientData client_data(client_meta);
+ bufferlist data_bl;
+ ::encode(client_data, data_bl);
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_update_client_state>(
+ this);
+ m_journaler->update_client(data_bl, ctx);
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_update_client_state(int r) {
+ dout(20) << ": r=" << r << dendl;
+ if (r < 0) {
+ derr << ": failed to update client: " << cpp_strerror(r) << dendl;
+ } else {
+ m_client_meta->state = librbd::journal::MIRROR_PEER_STATE_REPLAYING;
+ }
+
+ close_remote_image();
+}
+
+template <typename I>
+void BootstrapRequest<I>::open_local_image() {
+ dout(20) << dendl;
+
+ update_progress("OPEN_LOCAL_IMAGE");
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_open_local_image>(
+ this);
+ OpenLocalImageRequest<I> *request = OpenLocalImageRequest<I>::create(
+ m_local_io_ctx, m_local_image_ctx, m_local_image_id, m_work_queue,
+ ctx);
+ request->send();
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_open_local_image(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ if (r == -ENOENT) {
+ assert(*m_local_image_ctx == nullptr);
+ dout(10) << ": local image missing" << dendl;
+ unregister_client();
+ return;
+ } else if (r == -EREMOTEIO) {
+ assert(*m_local_image_ctx == nullptr);
+ dout(10) << "local image is primary -- skipping image replay" << dendl;
+ m_ret_val = r;
+ close_remote_image();
+ return;
+ } else if (r < 0) {
+ assert(*m_local_image_ctx == nullptr);
+ derr << ": failed to open local image: " << cpp_strerror(r) << dendl;
+ m_ret_val = r;
+ close_remote_image();
+ return;
+ }
+
+ I *local_image_ctx = (*m_local_image_ctx);
+ {
+ RWLock::RLocker snap_locker(local_image_ctx->snap_lock);
+ if (local_image_ctx->journal == nullptr) {
+ derr << ": local image does not support journaling" << dendl;
+ m_ret_val = -EINVAL;
+ close_local_image();
+ return;
+ }
+
+ r = (*m_local_image_ctx)->journal->is_resync_requested(m_do_resync);
+ if (r < 0) {
+ derr << ": failed to check if a resync was requested" << dendl;
+ m_ret_val = r;
+ close_local_image();
+ return;
+ }
+ }
+
+ if (*m_do_resync) {
+ close_remote_image();
+ return;
+ }
+
+ if (m_client.state == cls::journal::CLIENT_STATE_DISCONNECTED) {
+ dout(10) << ": client flagged disconnected -- skipping bootstrap" << dendl;
+ // The caller is expected to detect disconnect initializing remote journal.
+ m_ret_val = 0;
+ close_remote_image();
+ return;
+ }
+
+ get_remote_tags();
+}
+
+template <typename I>
+void BootstrapRequest<I>::unregister_client() {
+ dout(20) << dendl;
+ update_progress("UNREGISTER_CLIENT");
+
+ m_local_image_id = "";
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_unregister_client>(
+ this);
+ m_journaler->unregister_client(ctx);
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_unregister_client(int r) {
+ dout(20) << ": r=" << r << dendl;
+ if (r < 0) {
+ derr << ": failed to unregister with remote journal: " << cpp_strerror(r)
+ << dendl;
+ m_ret_val = r;
+ close_remote_image();
+ return;
+ }
+
+ *m_client_meta = librbd::journal::MirrorPeerClientMeta("");
+ register_client();
+}
+
+template <typename I>
+void BootstrapRequest<I>::update_client_image() {
+ dout(20) << dendl;
+ update_progress("UPDATE_CLIENT_IMAGE");
+
+ assert(m_local_image_id.empty());
+ m_local_image_id = librbd::util::generate_image_id<I>(m_local_io_ctx);
+
+ librbd::journal::MirrorPeerClientMeta client_meta{m_local_image_id};
+ client_meta.state = librbd::journal::MIRROR_PEER_STATE_SYNCING;
+
+ librbd::journal::ClientData client_data(client_meta);
+ bufferlist data_bl;
+ ::encode(client_data, data_bl);
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_update_client_image>(
+ this);
+ m_journaler->update_client(data_bl, ctx);
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_update_client_image(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ if (r < 0) {
+ derr << ": failed to update client: " << cpp_strerror(r) << dendl;
+ m_ret_val = r;
+ close_remote_image();
+ return;
+ }
+
+ if (m_canceled) {
+ dout(10) << ": request canceled" << dendl;
+ m_ret_val = -ECANCELED;
+ close_remote_image();
+ return;
+ }
+
+ *m_client_meta = {m_local_image_id};
+ m_client_meta->state = librbd::journal::MIRROR_PEER_STATE_SYNCING;
+ create_local_image();
+}
+
+template <typename I>
+void BootstrapRequest<I>::create_local_image() {
+ dout(20) << dendl;
+ update_progress("CREATE_LOCAL_IMAGE");
+
+ m_remote_image_ctx->snap_lock.get_read();
+ std::string image_name = m_remote_image_ctx->name;
+ m_remote_image_ctx->snap_lock.put_read();
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_create_local_image>(
+ this);
+ CreateImageRequest<I> *request = CreateImageRequest<I>::create(
+ m_local_io_ctx, m_work_queue, m_global_image_id, m_remote_mirror_uuid,
+ image_name, m_local_image_id, m_remote_image_ctx, ctx);
+ request->send();
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_create_local_image(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ if (r < 0) {
+ derr << ": failed to create local image: " << cpp_strerror(r) << dendl;
+ m_ret_val = r;
+ close_remote_image();
+ return;
+ }
+
+ open_local_image();
+}
+
+template <typename I>
+void BootstrapRequest<I>::get_remote_tags() {
+ if (m_client_meta->state == librbd::journal::MIRROR_PEER_STATE_SYNCING) {
+ // optimization -- no need to compare remote tags if we just created
+ // the image locally or sync was interrupted
+ image_sync();
+ return;
+ }
+
+ dout(20) << dendl;
+ update_progress("GET_REMOTE_TAGS");
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_get_remote_tags>(this);
+ m_journaler->get_tags(m_remote_tag_class, &m_remote_tags, ctx);
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_get_remote_tags(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ if (r < 0) {
+ derr << ": failed to retrieve remote tags: " << cpp_strerror(r) << dendl;
+ m_ret_val = r;
+ close_local_image();
+ return;
+ }
+
+ if (m_canceled) {
+ dout(10) << ": request canceled" << dendl;
+ m_ret_val = -ECANCELED;
+ close_local_image();
+ return;
+ }
+
+ // At this point, the local image was existing, non-primary, and replaying;
+ // and the remote image is primary. Attempt to link the local image's most
+ // recent tag to the remote image's tag chain.
+ uint64_t local_tag_tid;
+ librbd::journal::TagData local_tag_data;
+ I *local_image_ctx = (*m_local_image_ctx);
+ {
+ RWLock::RLocker snap_locker(local_image_ctx->snap_lock);
+ if (local_image_ctx->journal == nullptr) {
+ derr << ": local image does not support journaling" << dendl;
+ m_ret_val = -EINVAL;
+ close_local_image();
+ return;
+ }
+
+ local_tag_tid = local_image_ctx->journal->get_tag_tid();
+ local_tag_data = local_image_ctx->journal->get_tag_data();
+ dout(20) << ": local tag " << local_tag_tid << ": "
+ << local_tag_data << dendl;
+ }
+
+ bool remote_tag_data_valid = false;
+ librbd::journal::TagData remote_tag_data;
+ boost::optional<uint64_t> remote_orphan_tag_tid =
+ boost::make_optional<uint64_t>(false, 0U);
+ bool reconnect_orphan = false;
+
+ // decode the remote tags
+ for (auto &remote_tag : m_remote_tags) {
+ if (local_tag_data.predecessor.commit_valid &&
+ local_tag_data.predecessor.mirror_uuid == m_remote_mirror_uuid &&
+ local_tag_data.predecessor.tag_tid > remote_tag.tid) {
+ dout(20) << ": skipping processed predecessor remote tag "
+ << remote_tag.tid << dendl;
+ continue;
+ }
+
+ try {
+ bufferlist::iterator it = remote_tag.data.begin();
+ ::decode(remote_tag_data, it);
+ remote_tag_data_valid = true;
+ } catch (const buffer::error &err) {
+ derr << ": failed to decode remote tag " << remote_tag.tid << ": "
+ << err.what() << dendl;
+ m_ret_val = -EBADMSG;
+ close_local_image();
+ return;
+ }
+
+ dout(10) << ": decoded remote tag " << remote_tag.tid << ": "
+ << remote_tag_data << dendl;
+
+ if (!local_tag_data.predecessor.commit_valid) {
+ // newly synced local image (no predecessor) replays from the first tag
+ if (remote_tag_data.mirror_uuid != librbd::Journal<>::LOCAL_MIRROR_UUID) {
+ dout(20) << ": skipping non-primary remote tag" << dendl;
+ continue;
+ }
+
+ dout(20) << ": using initial primary remote tag" << dendl;
+ break;
+ }
+
+ if (local_tag_data.mirror_uuid == librbd::Journal<>::ORPHAN_MIRROR_UUID) {
+ // demotion last available local epoch
+
+ if (remote_tag_data.mirror_uuid == local_tag_data.mirror_uuid &&
+ remote_tag_data.predecessor.commit_valid &&
+ remote_tag_data.predecessor.tag_tid ==
+ local_tag_data.predecessor.tag_tid) {
+ // demotion matches remote epoch
+
+ if (remote_tag_data.predecessor.mirror_uuid == m_local_mirror_uuid &&
+ local_tag_data.predecessor.mirror_uuid ==
+ librbd::Journal<>::LOCAL_MIRROR_UUID) {
+ // local demoted and remote has matching event
+ dout(20) << ": found matching local demotion tag" << dendl;
+ remote_orphan_tag_tid = remote_tag.tid;
+ continue;
+ }
+
+ if (local_tag_data.predecessor.mirror_uuid == m_remote_mirror_uuid &&
+ remote_tag_data.predecessor.mirror_uuid ==
+ librbd::Journal<>::LOCAL_MIRROR_UUID) {
+ // remote demoted and local has matching event
+ dout(20) << ": found matching remote demotion tag" << dendl;
+ remote_orphan_tag_tid = remote_tag.tid;
+ continue;
+ }
+ }
+
+ if (remote_tag_data.mirror_uuid == librbd::Journal<>::LOCAL_MIRROR_UUID &&
+ remote_tag_data.predecessor.mirror_uuid == librbd::Journal<>::ORPHAN_MIRROR_UUID &&
+ remote_tag_data.predecessor.commit_valid && remote_orphan_tag_tid &&
+ remote_tag_data.predecessor.tag_tid == *remote_orphan_tag_tid) {
+ // remote promotion tag chained to remote/local demotion tag
+ dout(20) << ": found chained remote promotion tag" << dendl;
+ reconnect_orphan = true;
+ break;
+ }
+
+ // promotion must follow demotion
+ remote_orphan_tag_tid = boost::none;
+ }
+ }
+
+ if (remote_tag_data_valid &&
+ local_tag_data.mirror_uuid == m_remote_mirror_uuid) {
+ dout(20) << ": local image is in clean replay state" << dendl;
+ } else if (reconnect_orphan) {
+ dout(20) << ": remote image was demoted/promoted" << dendl;
+ } else {
+ derr << ": split-brain detected -- skipping image replay" << dendl;
+ m_ret_val = -EEXIST;
+ close_local_image();
+ return;
+ }
+
+ image_sync();
+}
+
+template <typename I>
+void BootstrapRequest<I>::image_sync() {
+ if (m_client_meta->state == librbd::journal::MIRROR_PEER_STATE_REPLAYING) {
+ // clean replay state -- no image sync required
+ close_remote_image();
+ return;
+ }
+
+ dout(20) << dendl;
+ {
+ Mutex::Locker locker(m_lock);
+ if (m_canceled) {
+ m_ret_val = -ECANCELED;
+ } else {
+ assert(m_image_sync == nullptr);
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_image_sync>(this);
+ m_image_sync = ImageSync<I>::create(
+ *m_local_image_ctx, m_remote_image_ctx, m_timer, m_timer_lock,
+ m_local_mirror_uuid, m_journaler, m_client_meta, m_work_queue,
+ m_instance_watcher, ctx, m_progress_ctx);
+
+ m_image_sync->get();
+
+ m_lock.Unlock();
+ update_progress("IMAGE_SYNC");
+ m_lock.Lock();
+
+ m_image_sync->send();
+ return;
+ }
+ }
+
+ dout(10) << ": request canceled" << dendl;
+ close_remote_image();
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_image_sync(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ {
+ Mutex::Locker locker(m_lock);
+ m_image_sync->put();
+ m_image_sync = nullptr;
+
+ if (m_canceled) {
+ dout(10) << ": request canceled" << dendl;
+ m_ret_val = -ECANCELED;
+ }
+
+ if (r < 0) {
+ derr << ": failed to sync remote image: " << cpp_strerror(r) << dendl;
+ m_ret_val = r;
+ }
+ }
+
+ close_remote_image();
+}
+
+template <typename I>
+void BootstrapRequest<I>::close_local_image() {
+ dout(20) << dendl;
+
+ update_progress("CLOSE_LOCAL_IMAGE");
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_close_local_image>(
+ this);
+ CloseImageRequest<I> *request = CloseImageRequest<I>::create(
+ m_local_image_ctx, ctx);
+ request->send();
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_close_local_image(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ if (r < 0) {
+ derr << ": error encountered closing local image: " << cpp_strerror(r)
+ << dendl;
+ }
+
+ close_remote_image();
+}
+
+template <typename I>
+void BootstrapRequest<I>::close_remote_image() {
+ dout(20) << dendl;
+
+ update_progress("CLOSE_REMOTE_IMAGE");
+
+ Context *ctx = create_context_callback<
+ BootstrapRequest<I>, &BootstrapRequest<I>::handle_close_remote_image>(
+ this);
+ CloseImageRequest<I> *request = CloseImageRequest<I>::create(
+ &m_remote_image_ctx, ctx);
+ request->send();
+}
+
+template <typename I>
+void BootstrapRequest<I>::handle_close_remote_image(int r) {
+ dout(20) << ": r=" << r << dendl;
+
+ if (r < 0) {
+ derr << ": error encountered closing remote image: " << cpp_strerror(r)
+ << dendl;
+ }
+
+ finish(m_ret_val);
+}
+
+template <typename I>
+bool BootstrapRequest<I>::decode_client_meta() {
+ dout(20) << dendl;
+
+ librbd::journal::ClientData client_data;
+ bufferlist::iterator it = m_client.data.begin();
+ try {
+ ::decode(client_data, it);
+ } catch (const buffer::error &err) {
+ derr << ": failed to decode client meta data: " << err.what() << dendl;
+ return false;
+ }
+
+ librbd::journal::MirrorPeerClientMeta *client_meta =
+ boost::get<librbd::journal::MirrorPeerClientMeta>(&client_data.client_meta);
+ if (client_meta == nullptr) {
+ derr << ": unknown peer registration" << dendl;
+ return false;
+ } else if (!client_meta->image_id.empty()) {
+ // have an image id -- use that to open the image
+ m_local_image_id = client_meta->image_id;
+ }
+
+ *m_client_meta = *client_meta;
+
+ dout(20) << ": client found: image_id=" << m_local_image_id
+ << ", client_meta=" << *m_client_meta << dendl;
+ return true;
+}
+
+template <typename I>
+void BootstrapRequest<I>::update_progress(const std::string &description) {
+ dout(20) << ": " << description << dendl;
+
+ if (m_progress_ctx) {
+ m_progress_ctx->update_progress(description);
+ }
+}
+
+} // namespace image_replayer
+} // namespace mirror
+} // namespace rbd
+
+template class rbd::mirror::image_replayer::BootstrapRequest<librbd::ImageCtx>;
Code Review / stor4nfv.git / blobdiff