+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "librbd/mirror/EnableRequest.h"
-#include "common/dout.h"
-#include "common/errno.h"
-#include "cls/rbd/cls_rbd_client.h"
-#include "librbd/ImageState.h"
-#include "librbd/Journal.h"
-#include "librbd/MirroringWatcher.h"
-#include "librbd/Utils.h"
-
-#define dout_subsys ceph_subsys_rbd
-#undef dout_prefix
-#define dout_prefix *_dout << "librbd::mirror::EnableRequest: "
-
-namespace librbd {
-namespace mirror {
-
-using util::create_context_callback;
-using util::create_rados_callback;
-
-template <typename I>
-EnableRequest<I>::EnableRequest(librados::IoCtx &io_ctx,
- const std::string &image_id,
- const std::string &non_primary_global_image_id,
- ContextWQ *op_work_queue, Context *on_finish)
- : m_io_ctx(io_ctx), m_image_id(image_id),
- m_non_primary_global_image_id(non_primary_global_image_id),
- m_op_work_queue(op_work_queue), m_on_finish(on_finish),
- m_cct(reinterpret_cast<CephContext*>(io_ctx.cct())) {
-}
-
-template <typename I>
-void EnableRequest<I>::send() {
- send_get_tag_owner();
-}
-
-template <typename I>
-void EnableRequest<I>::send_get_tag_owner() {
- if (!m_non_primary_global_image_id.empty()) {
- return
- send_get_mirror_image();
- }
- ldout(m_cct, 10) << this << " " << __func__ << dendl;
-
- using klass = EnableRequest<I>;
- Context *ctx = create_context_callback<
- klass, &klass::handle_get_tag_owner>(this);
- librbd::Journal<>::is_tag_owner(m_io_ctx, m_image_id, &m_is_primary,
- m_op_work_queue, ctx);
-}
-
-template <typename I>
-Context *EnableRequest<I>::handle_get_tag_owner(int *result) {
- ldout(m_cct, 10) << this << " " << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- lderr(m_cct) << "failed to check tag ownership: " << cpp_strerror(*result)
- << dendl;
- return m_on_finish;
- }
-
- if (!m_is_primary) {
- lderr(m_cct) << "last journal tag not owned by local cluster" << dendl;
- *result = -EINVAL;
- return m_on_finish;
- }
-
- send_get_mirror_image();
- return nullptr;
-}
-
-template <typename I>
-void EnableRequest<I>::send_get_mirror_image() {
- ldout(m_cct, 10) << this << " " << __func__ << dendl;
-
- librados::ObjectReadOperation op;
- cls_client::mirror_image_get_start(&op, m_image_id);
-
- using klass = EnableRequest<I>;
- librados::AioCompletion *comp =
- create_rados_callback<klass, &klass::handle_get_mirror_image>(this);
- m_out_bl.clear();
- int r = m_io_ctx.aio_operate(RBD_MIRRORING, comp, &op, &m_out_bl);
- assert(r == 0);
- comp->release();
-}
-
-template <typename I>
-Context *EnableRequest<I>::handle_get_mirror_image(int *result) {
- ldout(m_cct, 10) << this << " " << __func__ << ": r=" << *result << dendl;
-
- if (*result == 0) {
- bufferlist::iterator iter = m_out_bl.begin();
- *result = cls_client::mirror_image_get_finish(&iter, &m_mirror_image);
- }
-
- if (*result == 0) {
- if (m_mirror_image.state == cls::rbd::MIRROR_IMAGE_STATE_ENABLED) {
- ldout(m_cct, 10) << this << " " << __func__
- << ": mirroring is already enabled" << dendl;
- } else {
- lderr(m_cct) << "currently disabling" << dendl;
- *result = -EINVAL;
- }
- return m_on_finish;
- }
-
- if (*result != -ENOENT) {
- lderr(m_cct) << "failed to retreive mirror image: " << cpp_strerror(*result)
- << dendl;
- return m_on_finish;
- }
-
- *result = 0;
- m_mirror_image.state = cls::rbd::MIRROR_IMAGE_STATE_ENABLED;
- if (m_non_primary_global_image_id.empty()) {
- uuid_d uuid_gen;
- uuid_gen.generate_random();
- m_mirror_image.global_image_id = uuid_gen.to_string();
- } else {
- m_mirror_image.global_image_id = m_non_primary_global_image_id;
- }
-
- send_set_mirror_image();
- return nullptr;
-}
-
-template <typename I>
-void EnableRequest<I>::send_set_mirror_image() {
- ldout(m_cct, 10) << this << " " << __func__ << dendl;
-
- librados::ObjectWriteOperation op;
- cls_client::mirror_image_set(&op, m_image_id, m_mirror_image);
-
- using klass = EnableRequest<I>;
- librados::AioCompletion *comp =
- create_rados_callback<klass, &klass::handle_set_mirror_image>(this);
- m_out_bl.clear();
- int r = m_io_ctx.aio_operate(RBD_MIRRORING, comp, &op);
- assert(r == 0);
- comp->release();
-}
-
-template <typename I>
-Context *EnableRequest<I>::handle_set_mirror_image(int *result) {
- ldout(m_cct, 10) << this << " " << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- lderr(m_cct) << "failed to enable mirroring: " << cpp_strerror(*result)
- << dendl;
- return m_on_finish;
- }
-
- send_notify_mirroring_watcher();
- return nullptr;
-}
-
-template <typename I>
-void EnableRequest<I>::send_notify_mirroring_watcher() {
- ldout(m_cct, 10) << this << " " << __func__ << dendl;
-
- using klass = EnableRequest<I>;
- Context *ctx = create_context_callback<
- klass, &klass::handle_notify_mirroring_watcher>(this);
-
- MirroringWatcher<>::notify_image_updated(m_io_ctx,
- cls::rbd::MIRROR_IMAGE_STATE_ENABLED,
- m_image_id,
- m_mirror_image.global_image_id, ctx);
-}
-
-template <typename I>
-Context *EnableRequest<I>::handle_notify_mirroring_watcher(int *result) {
- ldout(m_cct, 10) << this << " " << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- lderr(m_cct) << "failed to send update notification: "
- << cpp_strerror(*result) << dendl;
- *result = 0;
- }
-
- return m_on_finish;
-}
-
-} // namespace mirror
-} // namespace librbd
-
-template class librbd::mirror::EnableRequest<librbd::ImageCtx>;
Code Review / stor4nfv.git / blobdiff