+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "librbd/image/CloseRequest.h"
-#include "common/dout.h"
-#include "common/errno.h"
-#include "librbd/ExclusiveLock.h"
-#include "librbd/ImageCtx.h"
-#include "librbd/ImageState.h"
-#include "librbd/ImageWatcher.h"
-#include "librbd/ObjectMap.h"
-#include "librbd/Utils.h"
-#include "librbd/io/ImageRequestWQ.h"
-
-#define dout_subsys ceph_subsys_rbd
-#undef dout_prefix
-#define dout_prefix *_dout << "librbd::image::CloseRequest: "
-
-namespace librbd {
-namespace image {
-
-using util::create_async_context_callback;
-using util::create_context_callback;
-
-template <typename I>
-CloseRequest<I>::CloseRequest(I *image_ctx, Context *on_finish)
- : m_image_ctx(image_ctx), m_on_finish(on_finish), m_error_result(0),
- m_exclusive_lock(nullptr) {
- assert(image_ctx != nullptr);
-}
-
-template <typename I>
-void CloseRequest<I>::send() {
- send_block_image_watcher();
-}
-
-template <typename I>
-void CloseRequest<I>::send_block_image_watcher() {
- if (m_image_ctx->image_watcher == nullptr) {
- send_shut_down_update_watchers();
- return;
- }
-
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- // prevent incoming requests from our peers
- m_image_ctx->image_watcher->block_notifies(create_context_callback<
- CloseRequest<I>, &CloseRequest<I>::handle_block_image_watcher>(this));
-}
-
-template <typename I>
-void CloseRequest<I>::handle_block_image_watcher(int r) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- send_shut_down_update_watchers();
-}
-
-template <typename I>
-void CloseRequest<I>::send_shut_down_update_watchers() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- m_image_ctx->state->shut_down_update_watchers(create_async_context_callback(
- *m_image_ctx, create_context_callback<
- CloseRequest<I>, &CloseRequest<I>::handle_shut_down_update_watchers>(this)));
-}
-
-template <typename I>
-void CloseRequest<I>::handle_shut_down_update_watchers(int r) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- save_result(r);
- if (r < 0) {
- lderr(cct) << "failed to shut down update watchers: " << cpp_strerror(r)
- << dendl;
- }
-
- send_shut_down_io_queue();
-}
-
-template <typename I>
-void CloseRequest<I>::send_shut_down_io_queue() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- RWLock::RLocker owner_locker(m_image_ctx->owner_lock);
- m_image_ctx->io_work_queue->shut_down(create_context_callback<
- CloseRequest<I>, &CloseRequest<I>::handle_shut_down_io_queue>(this));
-}
-
-template <typename I>
-void CloseRequest<I>::handle_shut_down_io_queue(int r) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- send_shut_down_exclusive_lock();
-}
-
-template <typename I>
-void CloseRequest<I>::send_shut_down_exclusive_lock() {
- {
- RWLock::WLocker owner_locker(m_image_ctx->owner_lock);
- m_exclusive_lock = m_image_ctx->exclusive_lock;
-
- // if reading a snapshot -- possible object map is open
- RWLock::WLocker snap_locker(m_image_ctx->snap_lock);
- if (m_exclusive_lock == nullptr) {
- delete m_image_ctx->object_map;
- m_image_ctx->object_map = nullptr;
- }
- }
-
- if (m_exclusive_lock == nullptr) {
- send_flush();
- return;
- }
-
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- // in-flight IO will be flushed and in-flight requests will be canceled
- // before releasing lock
- m_exclusive_lock->shut_down(create_context_callback<
- CloseRequest<I>, &CloseRequest<I>::handle_shut_down_exclusive_lock>(this));
-}
-
-template <typename I>
-void CloseRequest<I>::handle_shut_down_exclusive_lock(int r) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- {
- RWLock::RLocker owner_locker(m_image_ctx->owner_lock);
- assert(m_image_ctx->exclusive_lock == nullptr);
-
- // object map and journal closed during exclusive lock shutdown
- RWLock::RLocker snap_locker(m_image_ctx->snap_lock);
- assert(m_image_ctx->journal == nullptr);
- assert(m_image_ctx->object_map == nullptr);
- }
-
- delete m_exclusive_lock;
- m_exclusive_lock = nullptr;
-
- save_result(r);
- if (r < 0) {
- lderr(cct) << "failed to shut down exclusive lock: " << cpp_strerror(r)
- << dendl;
- }
-
- send_unregister_image_watcher();
-}
-
-template <typename I>
-void CloseRequest<I>::send_flush() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- RWLock::RLocker owner_locker(m_image_ctx->owner_lock);
- m_image_ctx->flush(create_async_context_callback(
- *m_image_ctx, create_context_callback<
- CloseRequest<I>, &CloseRequest<I>::handle_flush>(this)));
-}
-
-template <typename I>
-void CloseRequest<I>::handle_flush(int r) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- if (r < 0) {
- lderr(cct) << "failed to flush IO: " << cpp_strerror(r) << dendl;
- }
- send_unregister_image_watcher();
-}
-
-template <typename I>
-void CloseRequest<I>::send_unregister_image_watcher() {
- if (m_image_ctx->image_watcher == nullptr) {
- send_flush_readahead();
- return;
- }
-
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- m_image_ctx->image_watcher->unregister_watch(create_context_callback<
- CloseRequest<I>, &CloseRequest<I>::handle_unregister_image_watcher>(this));
-}
-
-template <typename I>
-void CloseRequest<I>::handle_unregister_image_watcher(int r) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- save_result(r);
- if (r < 0) {
- lderr(cct) << "failed to unregister image watcher: " << cpp_strerror(r)
- << dendl;
- }
-
- send_flush_readahead();
-}
-
-template <typename I>
-void CloseRequest<I>::send_flush_readahead() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- m_image_ctx->readahead.wait_for_pending(create_async_context_callback(
- *m_image_ctx, create_context_callback<
- CloseRequest<I>, &CloseRequest<I>::handle_flush_readahead>(this)));
-}
-
-template <typename I>
-void CloseRequest<I>::handle_flush_readahead(int r) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- send_shut_down_cache();
-}
-
-template <typename I>
-void CloseRequest<I>::send_shut_down_cache() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- m_image_ctx->shut_down_cache(create_context_callback<
- CloseRequest<I>, &CloseRequest<I>::handle_shut_down_cache>(this));
-}
-
-template <typename I>
-void CloseRequest<I>::handle_shut_down_cache(int r) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- save_result(r);
- if (r < 0) {
- lderr(cct) << "failed to shut down cache: " << cpp_strerror(r) << dendl;
- }
- send_flush_op_work_queue();
-}
-
-template <typename I>
-void CloseRequest<I>::send_flush_op_work_queue() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- m_image_ctx->op_work_queue->queue(create_context_callback<
- CloseRequest<I>, &CloseRequest<I>::handle_flush_op_work_queue>(this), 0);
-}
-
-template <typename I>
-void CloseRequest<I>::handle_flush_op_work_queue(int r) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
- send_close_parent();
-}
-
-template <typename I>
-void CloseRequest<I>::send_close_parent() {
- if (m_image_ctx->parent == nullptr) {
- send_flush_image_watcher();
- return;
- }
-
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- m_image_ctx->parent->state->close(create_async_context_callback(
- *m_image_ctx, create_context_callback<
- CloseRequest<I>, &CloseRequest<I>::handle_close_parent>(this)));
-}
-
-template <typename I>
-void CloseRequest<I>::handle_close_parent(int r) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- delete m_image_ctx->parent;
- save_result(r);
- if (r < 0) {
- lderr(cct) << "error closing parent image: " << cpp_strerror(r) << dendl;
- }
- send_flush_image_watcher();
-}
-
-template <typename I>
-void CloseRequest<I>::send_flush_image_watcher() {
- if (m_image_ctx->image_watcher == nullptr) {
- finish();
- return;
- }
-
- m_image_ctx->image_watcher->flush(create_context_callback<
- CloseRequest<I>, &CloseRequest<I>::handle_flush_image_watcher>(this));
-}
-
-template <typename I>
-void CloseRequest<I>::handle_flush_image_watcher(int r) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << r << dendl;
-
- if (r < 0) {
- lderr(cct) << "error flushing image watcher: " << cpp_strerror(r) << dendl;
- }
- save_result(r);
- finish();
-}
-
-template <typename I>
-void CloseRequest<I>::finish() {
- m_image_ctx->shutdown();
- m_on_finish->complete(m_error_result);
- delete this;
-}
-
-} // namespace image
-} // namespace librbd
-
-template class librbd::image::CloseRequest<librbd::ImageCtx>;
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