+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "librbd/image/OpenRequest.h"
-#include "common/dout.h"
-#include "common/errno.h"
-#include "cls/rbd/cls_rbd_client.h"
-#include "librbd/ImageCtx.h"
-#include "librbd/Utils.h"
-#include "librbd/image/CloseRequest.h"
-#include "librbd/image/RefreshRequest.h"
-#include "librbd/image/SetSnapRequest.h"
-#include <boost/algorithm/string/predicate.hpp>
-#include "include/assert.h"
-
-#define dout_subsys ceph_subsys_rbd
-#undef dout_prefix
-#define dout_prefix *_dout << "librbd::image::OpenRequest: "
-
-namespace librbd {
-namespace image {
-
-namespace {
-
-static uint64_t MAX_METADATA_ITEMS = 128;
-
-}
-
-using util::create_context_callback;
-using util::create_rados_callback;
-
-template <typename I>
-OpenRequest<I>::OpenRequest(I *image_ctx, bool skip_open_parent,
- Context *on_finish)
- : m_image_ctx(image_ctx), m_skip_open_parent_image(skip_open_parent),
- m_on_finish(on_finish), m_error_result(0),
- m_last_metadata_key(ImageCtx::METADATA_CONF_PREFIX) {
-}
-
-template <typename I>
-void OpenRequest<I>::send() {
- send_v2_detect_header();
-}
-
-template <typename I>
-void OpenRequest<I>::send_v1_detect_header() {
- librados::ObjectReadOperation op;
- op.stat(NULL, NULL, NULL);
-
- using klass = OpenRequest<I>;
- librados::AioCompletion *comp =
- create_rados_callback<klass, &klass::handle_v1_detect_header>(this);
- m_out_bl.clear();
- m_image_ctx->md_ctx.aio_operate(util::old_header_name(m_image_ctx->name),
- comp, &op, &m_out_bl);
- comp->release();
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_v1_detect_header(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- if (*result != -ENOENT) {
- lderr(cct) << "failed to stat image header: " << cpp_strerror(*result)
- << dendl;
- }
- send_close_image(*result);
- } else {
- ldout(cct, 1) << "RBD image format 1 is deprecated. "
- << "Please copy this image to image format 2." << dendl;
-
- m_image_ctx->old_format = true;
- m_image_ctx->header_oid = util::old_header_name(m_image_ctx->name);
- m_image_ctx->apply_metadata({});
-
- send_register_watch();
- }
- return nullptr;
-}
-
-template <typename I>
-void OpenRequest<I>::send_v2_detect_header() {
- if (m_image_ctx->id.empty()) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- librados::ObjectReadOperation op;
- op.stat(NULL, NULL, NULL);
-
- using klass = OpenRequest<I>;
- librados::AioCompletion *comp =
- create_rados_callback<klass, &klass::handle_v2_detect_header>(this);
- m_out_bl.clear();
- m_image_ctx->md_ctx.aio_operate(util::id_obj_name(m_image_ctx->name),
- comp, &op, &m_out_bl);
- comp->release();
- } else {
- send_v2_get_name();
- }
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_v2_detect_header(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << __func__ << ": r=" << *result << dendl;
-
- if (*result == -ENOENT) {
- send_v1_detect_header();
- } else if (*result < 0) {
- lderr(cct) << "failed to stat v2 image header: " << cpp_strerror(*result)
- << dendl;
- send_close_image(*result);
- } else {
- m_image_ctx->old_format = false;
- send_v2_get_id();
- }
- return nullptr;
-}
-
-template <typename I>
-void OpenRequest<I>::send_v2_get_id() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- librados::ObjectReadOperation op;
- cls_client::get_id_start(&op);
-
- using klass = OpenRequest<I>;
- librados::AioCompletion *comp =
- create_rados_callback<klass, &klass::handle_v2_get_id>(this);
- m_out_bl.clear();
- m_image_ctx->md_ctx.aio_operate(util::id_obj_name(m_image_ctx->name),
- comp, &op, &m_out_bl);
- comp->release();
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_v2_get_id(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << __func__ << ": r=" << *result << dendl;
-
- if (*result == 0) {
- bufferlist::iterator it = m_out_bl.begin();
- *result = cls_client::get_id_finish(&it, &m_image_ctx->id);
- }
- if (*result < 0) {
- lderr(cct) << "failed to retrieve image id: " << cpp_strerror(*result)
- << dendl;
- send_close_image(*result);
- } else {
- send_v2_get_immutable_metadata();
- }
- return nullptr;
-}
-
-template <typename I>
-void OpenRequest<I>::send_v2_get_name() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- librados::ObjectReadOperation op;
- cls_client::dir_get_name_start(&op, m_image_ctx->id);
-
- using klass = OpenRequest<I>;
- librados::AioCompletion *comp = create_rados_callback<
- klass, &klass::handle_v2_get_name>(this);
- m_out_bl.clear();
- m_image_ctx->md_ctx.aio_operate(RBD_DIRECTORY, comp, &op, &m_out_bl);
- comp->release();
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_v2_get_name(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << __func__ << ": r=" << *result << dendl;
-
- if (*result == 0) {
- bufferlist::iterator it = m_out_bl.begin();
- *result = cls_client::dir_get_name_finish(&it, &m_image_ctx->name);
- }
- if (*result < 0 && *result != -ENOENT) {
- lderr(cct) << "failed to retreive name: "
- << cpp_strerror(*result) << dendl;
- send_close_image(*result);
- } else if (*result == -ENOENT) {
- // image does not exist in directory, look in the trash bin
- ldout(cct, 10) << "image id " << m_image_ctx->id << " does not exist in "
- << "rbd directory, searching in rbd trash..." << dendl;
- send_v2_get_name_from_trash();
- } else {
- send_v2_get_immutable_metadata();
- }
-
- return nullptr;
-}
-
-template <typename I>
-void OpenRequest<I>::send_v2_get_name_from_trash() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- librados::ObjectReadOperation op;
- cls_client::trash_get_start(&op, m_image_ctx->id);
-
- using klass = OpenRequest<I>;
- librados::AioCompletion *comp = create_rados_callback<
- klass, &klass::handle_v2_get_name_from_trash>(this);
- m_out_bl.clear();
- m_image_ctx->md_ctx.aio_operate(RBD_TRASH, comp, &op, &m_out_bl);
- comp->release();
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_v2_get_name_from_trash(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << __func__ << ": r=" << *result << dendl;
-
- cls::rbd::TrashImageSpec trash_spec;
- if (*result == 0) {
- bufferlist::iterator it = m_out_bl.begin();
- *result = cls_client::trash_get_finish(&it, &trash_spec);
- m_image_ctx->name = trash_spec.name;
- }
- if (*result < 0) {
- if (*result == -EOPNOTSUPP) {
- *result = -ENOENT;
- }
- if (*result == -ENOENT) {
- ldout(cct, 5) << "failed to retrieve name for image id "
- << m_image_ctx->id << dendl;
- } else {
- lderr(cct) << "failed to retreive name from trash: "
- << cpp_strerror(*result) << dendl;
- }
- send_close_image(*result);
- } else {
- send_v2_get_immutable_metadata();
- }
-
- return nullptr;
-}
-
-template <typename I>
-void OpenRequest<I>::send_v2_get_immutable_metadata() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- m_image_ctx->old_format = false;
- m_image_ctx->header_oid = util::header_name(m_image_ctx->id);
-
- librados::ObjectReadOperation op;
- cls_client::get_immutable_metadata_start(&op);
-
- using klass = OpenRequest<I>;
- librados::AioCompletion *comp = create_rados_callback<
- klass, &klass::handle_v2_get_immutable_metadata>(this);
- m_out_bl.clear();
- m_image_ctx->md_ctx.aio_operate(m_image_ctx->header_oid, comp, &op,
- &m_out_bl);
- comp->release();
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_v2_get_immutable_metadata(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << __func__ << ": r=" << *result << dendl;
-
- if (*result == 0) {
- bufferlist::iterator it = m_out_bl.begin();
- *result = cls_client::get_immutable_metadata_finish(
- &it, &m_image_ctx->object_prefix, &m_image_ctx->order);
- }
- if (*result < 0) {
- lderr(cct) << "failed to retreive immutable metadata: "
- << cpp_strerror(*result) << dendl;
- send_close_image(*result);
- } else {
- send_v2_get_stripe_unit_count();
- }
-
- return nullptr;
-}
-
-template <typename I>
-void OpenRequest<I>::send_v2_get_stripe_unit_count() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- librados::ObjectReadOperation op;
- cls_client::get_stripe_unit_count_start(&op);
-
- using klass = OpenRequest<I>;
- librados::AioCompletion *comp = create_rados_callback<
- klass, &klass::handle_v2_get_stripe_unit_count>(this);
- m_out_bl.clear();
- m_image_ctx->md_ctx.aio_operate(m_image_ctx->header_oid, comp, &op,
- &m_out_bl);
- comp->release();
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_v2_get_stripe_unit_count(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << __func__ << ": r=" << *result << dendl;
-
- if (*result == 0) {
- bufferlist::iterator it = m_out_bl.begin();
- *result = cls_client::get_stripe_unit_count_finish(
- &it, &m_image_ctx->stripe_unit, &m_image_ctx->stripe_count);
- }
-
- if (*result == -ENOEXEC || *result == -EINVAL) {
- *result = 0;
- }
-
- if (*result < 0) {
- lderr(cct) << "failed to read striping metadata: " << cpp_strerror(*result)
- << dendl;
- send_close_image(*result);
- return nullptr;
- }
-
- send_v2_get_create_timestamp();
- return nullptr;
-}
-
-template <typename I>
-void OpenRequest<I>::send_v2_get_create_timestamp() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- librados::ObjectReadOperation op;
- cls_client::get_create_timestamp_start(&op);
-
- using klass = OpenRequest<I>;
- librados::AioCompletion *comp = create_rados_callback<
- klass, &klass::handle_v2_get_create_timestamp>(this);
- m_out_bl.clear();
- m_image_ctx->md_ctx.aio_operate(m_image_ctx->header_oid, comp, &op,
- &m_out_bl);
- comp->release();
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_v2_get_create_timestamp(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl;
-
- if (*result == 0) {
- bufferlist::iterator it = m_out_bl.begin();
- *result = cls_client::get_create_timestamp_finish(&it,
- &m_image_ctx->create_timestamp);
- }
- if (*result < 0 && *result != -EOPNOTSUPP) {
- lderr(cct) << "failed to retrieve create_timestamp: "
- << cpp_strerror(*result)
- << dendl;
- send_close_image(*result);
- return nullptr;
- }
-
- send_v2_get_data_pool();
- return nullptr;
-}
-
-template <typename I>
-void OpenRequest<I>::send_v2_get_data_pool() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- librados::ObjectReadOperation op;
- cls_client::get_data_pool_start(&op);
-
- using klass = OpenRequest<I>;
- librados::AioCompletion *comp = create_rados_callback<
- klass, &klass::handle_v2_get_data_pool>(this);
- m_out_bl.clear();
- m_image_ctx->md_ctx.aio_operate(m_image_ctx->header_oid, comp, &op,
- &m_out_bl);
- comp->release();
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_v2_get_data_pool(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl;
-
- int64_t data_pool_id = -1;
- if (*result == 0) {
- bufferlist::iterator it = m_out_bl.begin();
- *result = cls_client::get_data_pool_finish(&it, &data_pool_id);
- } else if (*result == -EOPNOTSUPP) {
- *result = 0;
- }
-
- if (*result < 0) {
- lderr(cct) << "failed to read data pool: " << cpp_strerror(*result)
- << dendl;
- send_close_image(*result);
- return nullptr;
- }
-
- if (data_pool_id != -1) {
- librados::Rados rados(m_image_ctx->md_ctx);
- *result = rados.ioctx_create2(data_pool_id, m_image_ctx->data_ctx);
- if (*result < 0) {
- lderr(cct) << "failed to initialize data pool IO context: "
- << cpp_strerror(*result) << dendl;
- send_close_image(*result);
- return nullptr;
- }
- }
-
- m_image_ctx->init_layout();
- send_v2_apply_metadata();
- return nullptr;
-}
-
-template <typename I>
-void OpenRequest<I>::send_v2_apply_metadata() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": "
- << "start_key=" << m_last_metadata_key << dendl;
-
- librados::ObjectReadOperation op;
- cls_client::metadata_list_start(&op, m_last_metadata_key, MAX_METADATA_ITEMS);
-
- using klass = OpenRequest<I>;
- librados::AioCompletion *comp =
- create_rados_callback<klass, &klass::handle_v2_apply_metadata>(this);
- m_out_bl.clear();
- m_image_ctx->md_ctx.aio_operate(m_image_ctx->header_oid, comp, &op,
- &m_out_bl);
- comp->release();
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_v2_apply_metadata(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl;
-
- std::map<std::string, bufferlist> metadata;
- if (*result == 0) {
- bufferlist::iterator it = m_out_bl.begin();
- *result = cls_client::metadata_list_finish(&it, &metadata);
- }
-
- if (*result == -EOPNOTSUPP || *result == -EIO) {
- ldout(cct, 10) << "config metadata not supported by OSD" << dendl;
- } else if (*result < 0) {
- lderr(cct) << "failed to retrieve metadata: " << cpp_strerror(*result)
- << dendl;
- send_close_image(*result);
- return nullptr;
- }
-
- if (!metadata.empty()) {
- m_metadata.insert(metadata.begin(), metadata.end());
- m_last_metadata_key = metadata.rbegin()->first;
- if (boost::starts_with(m_last_metadata_key,
- ImageCtx::METADATA_CONF_PREFIX)) {
- send_v2_apply_metadata();
- return nullptr;
- }
- }
-
- m_image_ctx->apply_metadata(m_metadata);
-
- send_register_watch();
- return nullptr;
-}
-
-template <typename I>
-void OpenRequest<I>::send_register_watch() {
- m_image_ctx->init();
-
- if (m_image_ctx->read_only) {
- send_refresh();
- return;
- }
-
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- using klass = OpenRequest<I>;
- Context *ctx = create_context_callback<
- klass, &klass::handle_register_watch>(this);
- m_image_ctx->register_watch(ctx);
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_register_watch(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- lderr(cct) << "failed to register watch: " << cpp_strerror(*result)
- << dendl;
- send_close_image(*result);
- } else {
- send_refresh();
- }
- return nullptr;
-}
-
-template <typename I>
-void OpenRequest<I>::send_refresh() {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- using klass = OpenRequest<I>;
- RefreshRequest<I> *req = RefreshRequest<I>::create(
- *m_image_ctx, false, m_skip_open_parent_image,
- create_context_callback<klass, &klass::handle_refresh>(this));
- req->send();
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_refresh(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- lderr(cct) << "failed to refresh image: " << cpp_strerror(*result)
- << dendl;
- send_close_image(*result);
- return nullptr;
- } else {
- return send_set_snap(result);
- }
-}
-
-template <typename I>
-Context *OpenRequest<I>::send_set_snap(int *result) {
- if (m_image_ctx->snap_name.empty()) {
- *result = 0;
- return m_on_finish;
- }
-
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- using klass = OpenRequest<I>;
- SetSnapRequest<I> *req = SetSnapRequest<I>::create(
- *m_image_ctx, m_image_ctx->snap_namespace, m_image_ctx->snap_name,
- create_context_callback<klass, &klass::handle_set_snap>(this));
- req->send();
- return nullptr;
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_set_snap(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- lderr(cct) << "failed to set image snapshot: " << cpp_strerror(*result)
- << dendl;
- send_close_image(*result);
- return nullptr;
- }
-
- return m_on_finish;
-}
-
-template <typename I>
-void OpenRequest<I>::send_close_image(int error_result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << this << " " << __func__ << dendl;
-
- m_error_result = error_result;
-
- using klass = OpenRequest<I>;
- Context *ctx = create_context_callback<klass, &klass::handle_close_image>(
- this);
- CloseRequest<I> *req = CloseRequest<I>::create(m_image_ctx, ctx);
- req->send();
-}
-
-template <typename I>
-Context *OpenRequest<I>::handle_close_image(int *result) {
- CephContext *cct = m_image_ctx->cct;
- ldout(cct, 10) << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- lderr(cct) << "failed to close image: " << cpp_strerror(*result) << dendl;
- }
- if (m_error_result < 0) {
- *result = m_error_result;
- }
- return m_on_finish;
-}
-
-} // namespace image
-} // namespace librbd
-
-template class librbd::image::OpenRequest<librbd::ImageCtx>;
Code Review / stor4nfv.git / blobdiff