+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "ImageCopyRequest.h"
-#include "ObjectCopyRequest.h"
-#include "include/stringify.h"
-#include "common/errno.h"
-#include "common/Timer.h"
-#include "journal/Journaler.h"
-#include "librbd/Utils.h"
-#include "tools/rbd_mirror/ProgressContext.h"
-
-#define dout_context g_ceph_context
-#define dout_subsys ceph_subsys_rbd_mirror
-#undef dout_prefix
-#define dout_prefix *_dout << "rbd::mirror::image_sync::ImageCopyRequest: " \
- << this << " " << __func__
-
-namespace rbd {
-namespace mirror {
-namespace image_sync {
-
-using librbd::util::create_context_callback;
-using librbd::util::unique_lock_name;
-
-template <typename I>
-ImageCopyRequest<I>::ImageCopyRequest(I *local_image_ctx, I *remote_image_ctx,
- SafeTimer *timer, Mutex *timer_lock,
- Journaler *journaler,
- MirrorPeerClientMeta *client_meta,
- MirrorPeerSyncPoint *sync_point,
- Context *on_finish,
- ProgressContext *progress_ctx)
- : BaseRequest("rbd::mirror::image_sync::ImageCopyRequest",
- local_image_ctx->cct, on_finish),
- m_local_image_ctx(local_image_ctx), m_remote_image_ctx(remote_image_ctx),
- m_timer(timer), m_timer_lock(timer_lock), m_journaler(journaler),
- m_client_meta(client_meta), m_sync_point(sync_point),
- m_progress_ctx(progress_ctx),
- m_lock(unique_lock_name("ImageCopyRequest::m_lock", this)),
- m_updating_sync_point(false), m_update_sync_ctx(nullptr),
- m_update_sync_point_interval(m_local_image_ctx->cct->_conf->template get_val<double>(
- "rbd_mirror_sync_point_update_age")),
- m_client_meta_copy(*client_meta) {
- assert(!m_client_meta_copy.sync_points.empty());
-}
-
-template <typename I>
-void ImageCopyRequest<I>::send() {
- int r = compute_snap_map();
- if (r < 0) {
- finish(r);
- return;
- }
-
- send_update_max_object_count();
-}
-
-template <typename I>
-void ImageCopyRequest<I>::cancel() {
- Mutex::Locker locker(m_lock);
-
- dout(20) << dendl;
- m_canceled = true;
-}
-
-template <typename I>
-void ImageCopyRequest<I>::send_update_max_object_count() {
- uint64_t max_objects = m_client_meta->sync_object_count;
- {
- RWLock::RLocker snap_locker(m_remote_image_ctx->snap_lock);
- max_objects = std::max(max_objects,
- m_remote_image_ctx->get_object_count(CEPH_NOSNAP));
- for (auto snap_id : m_remote_image_ctx->snaps) {
- max_objects = std::max(max_objects,
- m_remote_image_ctx->get_object_count(snap_id));
- }
- }
-
- if (max_objects <= m_client_meta->sync_object_count) {
- send_object_copies();
- return;
- }
-
- update_progress("UPDATE_MAX_OBJECT_COUNT");
-
- dout(20) << ": sync_object_count=" << max_objects << dendl;
-
- m_client_meta_copy = *m_client_meta;
- m_client_meta_copy.sync_object_count = max_objects;
-
- bufferlist client_data_bl;
- librbd::journal::ClientData client_data(m_client_meta_copy);
- ::encode(client_data, client_data_bl);
-
- Context *ctx = create_context_callback<
- ImageCopyRequest<I>, &ImageCopyRequest<I>::handle_update_max_object_count>(
- this);
- m_journaler->update_client(client_data_bl, ctx);
-}
-
-template <typename I>
-void ImageCopyRequest<I>::handle_update_max_object_count(int r) {
- dout(20) << ": r=" << r << dendl;
-
- if (r == 0) {
- Mutex::Locker locker(m_lock);
- if (m_canceled) {
- dout(10) << ": image copy canceled" << dendl;
- r = -ECANCELED;
- }
- }
-
- if (r < 0) {
- if (r != -ECANCELED) {
- derr << ": failed to update client data: " << cpp_strerror(r) << dendl;
- }
- finish(r);
- return;
- }
-
- // update provided meta structure to reflect reality
- m_client_meta->sync_object_count = m_client_meta_copy.sync_object_count;
-
- send_object_copies();
-}
-
-template <typename I>
-void ImageCopyRequest<I>::send_object_copies() {
- CephContext *cct = m_local_image_ctx->cct;
-
- m_object_no = 0;
- if (m_sync_point->object_number) {
- m_object_no = *m_sync_point->object_number + 1;
- }
- m_end_object_no = m_client_meta->sync_object_count;
-
- dout(20) << ": start_object=" << m_object_no << ", "
- << "end_object=" << m_end_object_no << dendl;
-
- update_progress("COPY_OBJECT");
-
- bool complete;
- {
- Mutex::Locker locker(m_lock);
- for (int i = 0; i < cct->_conf->get_val<int64_t>("rbd_concurrent_management_ops"); ++i) {
- send_next_object_copy();
- if (m_ret_val < 0 && m_current_ops == 0) {
- break;
- }
- }
- complete = (m_current_ops == 0);
-
- if (!complete) {
- m_update_sync_ctx = new FunctionContext([this](int r) {
- this->send_update_sync_point();
- });
- }
- }
-
- {
- Mutex::Locker timer_locker(*m_timer_lock);
- if (m_update_sync_ctx) {
- m_update_sync_ctx = m_timer->add_event_after(
- m_update_sync_point_interval,
- m_update_sync_ctx);
- }
- }
-
- if (complete) {
- send_flush_sync_point();
- }
-}
-
-template <typename I>
-void ImageCopyRequest<I>::send_next_object_copy() {
- assert(m_lock.is_locked());
-
- if (m_canceled && m_ret_val == 0) {
- dout(10) << ": image copy canceled" << dendl;
- m_ret_val = -ECANCELED;
- }
-
- if (m_ret_val < 0 || m_object_no >= m_end_object_no) {
- return;
- }
-
- uint64_t ono = m_object_no++;
-
- dout(20) << ": object_num=" << ono << dendl;
-
- ++m_current_ops;
-
- Context *ctx = create_context_callback<
- ImageCopyRequest<I>, &ImageCopyRequest<I>::handle_object_copy>(this);
- ObjectCopyRequest<I> *req = ObjectCopyRequest<I>::create(
- m_local_image_ctx, m_remote_image_ctx, &m_snap_map, ono, ctx);
- req->send();
-}
-
-template <typename I>
-void ImageCopyRequest<I>::handle_object_copy(int r) {
- dout(20) << ": r=" << r << dendl;
-
- int percent;
- bool complete;
- {
- Mutex::Locker locker(m_lock);
- assert(m_current_ops > 0);
- --m_current_ops;
-
- percent = 100 * m_object_no / m_end_object_no;
-
- if (r < 0) {
- derr << ": object copy failed: " << cpp_strerror(r) << dendl;
- if (m_ret_val == 0) {
- m_ret_val = r;
- }
- }
-
- send_next_object_copy();
- complete = (m_current_ops == 0);
- }
-
- update_progress("COPY_OBJECT " + stringify(percent) + "%", false);
-
- if (complete) {
- bool do_flush = true;
- {
- Mutex::Locker timer_locker(*m_timer_lock);
- Mutex::Locker locker(m_lock);
- if (!m_updating_sync_point) {
- if (m_update_sync_ctx != nullptr) {
- m_timer->cancel_event(m_update_sync_ctx);
- m_update_sync_ctx = nullptr;
- }
- } else {
- do_flush = false;
- }
- }
-
- if (do_flush) {
- send_flush_sync_point();
- }
- }
-}
-
-template <typename I>
-void ImageCopyRequest<I>::send_update_sync_point() {
- Mutex::Locker l(m_lock);
-
- m_update_sync_ctx = nullptr;
-
- if (m_canceled || m_ret_val < 0 || m_current_ops == 0) {
- return;
- }
-
- if (m_sync_point->object_number &&
- (m_object_no-1) == m_sync_point->object_number.get()) {
- // update sync point did not progress since last sync
- return;
- }
-
- m_updating_sync_point = true;
-
- m_client_meta_copy = *m_client_meta;
- m_sync_point->object_number = m_object_no - 1;
-
- CephContext *cct = m_local_image_ctx->cct;
- ldout(cct, 20) << ": sync_point=" << *m_sync_point << dendl;
-
- bufferlist client_data_bl;
- librbd::journal::ClientData client_data(*m_client_meta);
- ::encode(client_data, client_data_bl);
-
- Context *ctx = create_context_callback<
- ImageCopyRequest<I>, &ImageCopyRequest<I>::handle_update_sync_point>(
- this);
- m_journaler->update_client(client_data_bl, ctx);
-}
-
-template <typename I>
-void ImageCopyRequest<I>::handle_update_sync_point(int r) {
- CephContext *cct = m_local_image_ctx->cct;
- ldout(cct, 20) << ": r=" << r << dendl;
-
- if (r < 0) {
- *m_client_meta = m_client_meta_copy;
- lderr(cct) << ": failed to update client data: " << cpp_strerror(r)
- << dendl;
- }
-
- bool complete;
- {
- Mutex::Locker l(m_lock);
- m_updating_sync_point = false;
-
- complete = m_current_ops == 0 || m_canceled || m_ret_val < 0;
-
- if (!complete) {
- m_update_sync_ctx = new FunctionContext([this](int r) {
- this->send_update_sync_point();
- });
- }
- }
-
- if (!complete) {
- Mutex::Locker timer_lock(*m_timer_lock);
- if (m_update_sync_ctx) {
- m_timer->add_event_after(m_update_sync_point_interval,
- m_update_sync_ctx);
- }
- } else {
- send_flush_sync_point();
- }
-}
-
-template <typename I>
-void ImageCopyRequest<I>::send_flush_sync_point() {
- if (m_ret_val < 0) {
- finish(m_ret_val);
- return;
- }
-
- update_progress("FLUSH_SYNC_POINT");
-
- m_client_meta_copy = *m_client_meta;
- if (m_object_no > 0) {
- m_sync_point->object_number = m_object_no - 1;
- } else {
- m_sync_point->object_number = boost::none;
- }
-
- dout(20) << ": sync_point=" << *m_sync_point << dendl;
-
- bufferlist client_data_bl;
- librbd::journal::ClientData client_data(m_client_meta_copy);
- ::encode(client_data, client_data_bl);
-
- Context *ctx = create_context_callback<
- ImageCopyRequest<I>, &ImageCopyRequest<I>::handle_flush_sync_point>(
- this);
- m_journaler->update_client(client_data_bl, ctx);
-}
-
-template <typename I>
-void ImageCopyRequest<I>::handle_flush_sync_point(int r) {
- dout(20) << ": r=" << r << dendl;
-
- if (r < 0) {
- *m_client_meta = m_client_meta_copy;
-
- derr << ": failed to update client data: " << cpp_strerror(r)
- << dendl;
- finish(r);
- return;
- }
-
- finish(0);
-}
-
-template <typename I>
-int ImageCopyRequest<I>::compute_snap_map() {
-
- librados::snap_t snap_id_start = 0;
- librados::snap_t snap_id_end;
- {
- RWLock::RLocker snap_locker(m_remote_image_ctx->snap_lock);
- snap_id_end = m_remote_image_ctx->get_snap_id(
- cls::rbd::UserSnapshotNamespace(), m_sync_point->snap_name);
- if (snap_id_end == CEPH_NOSNAP) {
- derr << ": failed to locate snapshot: "
- << m_sync_point->snap_name << dendl;
- return -ENOENT;
- }
-
- if (!m_sync_point->from_snap_name.empty()) {
- snap_id_start = m_remote_image_ctx->get_snap_id(
- cls::rbd::UserSnapshotNamespace(), m_sync_point->from_snap_name);
- if (snap_id_start == CEPH_NOSNAP) {
- derr << ": failed to locate from snapshot: "
- << m_sync_point->from_snap_name << dendl;
- return -ENOENT;
- }
- }
- }
-
- SnapIds snap_ids;
- for (auto it = m_client_meta->snap_seqs.begin();
- it != m_client_meta->snap_seqs.end(); ++it) {
- snap_ids.insert(snap_ids.begin(), it->second);
- if (it->first < snap_id_start) {
- continue;
- } else if (it->first > snap_id_end) {
- break;
- }
-
- m_snap_map[it->first] = snap_ids;
- }
-
- if (m_snap_map.empty()) {
- derr << ": failed to map snapshots within boundary" << dendl;
- return -EINVAL;
- }
-
- return 0;
-}
-
-template <typename I>
-void ImageCopyRequest<I>::update_progress(const std::string &description,
- bool flush) {
- dout(20) << ": " << description << dendl;
-
- if (m_progress_ctx) {
- m_progress_ctx->update_progress("IMAGE_COPY/" + description, flush);
- }
-}
-
-} // namespace image_sync
-} // namespace mirror
-} // namespace rbd
-
-template class rbd::mirror::image_sync::ImageCopyRequest<librbd::ImageCtx>;
Code Review / stor4nfv.git / blobdiff