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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "librbd/trash/RemoveRequest.h"
#include "common/dout.h"
#include "common/errno.h"
#include "cls/rbd/cls_rbd_client.h"
#include "librbd/ExclusiveLock.h"
#include "librbd/ImageCtx.h"
#include "librbd/ImageState.h"
#include "librbd/Utils.h"
#include "librbd/asio/ContextWQ.h"
#include "librbd/image/RemoveRequest.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::trash::RemoveRequest: " << this \
<< " " << __func__ << ": "
namespace librbd {
namespace trash {
using util::create_context_callback;
using util::create_rados_callback;
template <typename I>
void RemoveRequest<I>::send() {
set_state();
}
template <typename I>
void RemoveRequest<I>::set_state() {
ldout(m_cct, 10) << dendl;
librados::ObjectWriteOperation op;
cls_client::trash_state_set(&op, m_image_id, m_trash_set_state,
m_trash_expect_state);
auto aio_comp = create_rados_callback<
RemoveRequest<I>, &RemoveRequest<I>::handle_set_state>(this);
int r = m_io_ctx.aio_operate(RBD_TRASH, aio_comp, &op);
ceph_assert(r == 0);
aio_comp->release();
}
template <typename I>
void RemoveRequest<I>::handle_set_state(int r) {
ldout(m_cct, 10) << "r=" << r << dendl;
if (r < 0 && r != -EOPNOTSUPP) {
lderr(m_cct) << "error setting trash image state: " << cpp_strerror(r)
<< dendl;
if (m_ret_val == 0) {
m_ret_val = r;
}
if (m_trash_set_state == cls::rbd::TRASH_IMAGE_STATE_REMOVING) {
close_image();
} else {
finish(m_ret_val);
}
return;
}
if (m_trash_set_state == cls::rbd::TRASH_IMAGE_STATE_REMOVING) {
remove_image();
} else {
ceph_assert(m_trash_set_state == cls::rbd::TRASH_IMAGE_STATE_NORMAL);
finish(m_ret_val < 0 ? m_ret_val : r);
};
}
template <typename I>
void RemoveRequest<I>::close_image() {
if (m_image_ctx == nullptr) {
finish(m_ret_val);
return;
}
ldout(m_cct, 10) << dendl;
auto ctx = create_context_callback<
RemoveRequest<I>, &RemoveRequest<I>::handle_close_image>(this);
m_image_ctx->state->close(ctx);
}
template <typename I>
void RemoveRequest<I>::handle_close_image(int r) {
ldout(m_cct, 10) << "r=" << r << dendl;
if (r < 0) {
ldout(m_cct, 5) << "failed to close image:" << cpp_strerror(r) << dendl;
}
m_image_ctx = nullptr;
finish(m_ret_val);
}
template <typename I>
void RemoveRequest<I>::remove_image() {
ldout(m_cct, 10) << dendl;
auto ctx = create_context_callback<
RemoveRequest<I>, &RemoveRequest<I>::handle_remove_image>(this);
if (m_image_ctx != nullptr) {
auto req = librbd::image::RemoveRequest<I>::create(
m_io_ctx, m_image_ctx, m_force, true, m_prog_ctx, m_op_work_queue, ctx);
req->send();
} else {
auto req = librbd::image::RemoveRequest<I>::create(
m_io_ctx, "", m_image_id, m_force, true, m_prog_ctx, m_op_work_queue,
ctx);
req->send();
}
}
template <typename I>
void RemoveRequest<I>::handle_remove_image(int r) {
ldout(m_cct, 10) << "r=" << r << dendl;
if (r < 0) {
ldout(m_cct, 5) << "failed to remove image:" << cpp_strerror(r) << dendl;
m_ret_val = r;
m_trash_set_state = cls::rbd::TRASH_IMAGE_STATE_NORMAL;
m_trash_expect_state = cls::rbd::TRASH_IMAGE_STATE_REMOVING;
set_state();
return;
}
m_image_ctx = nullptr;
remove_trash_entry();
}
template <typename I>
void RemoveRequest<I>::remove_trash_entry() {
ldout(m_cct, 10) << dendl;
librados::ObjectWriteOperation op;
cls_client::trash_remove(&op, m_image_id);
auto aio_comp = create_rados_callback<
RemoveRequest<I>, &RemoveRequest<I>::handle_remove_trash_entry>(this);
int r = m_io_ctx.aio_operate(RBD_TRASH, aio_comp, &op);
ceph_assert(r == 0);
aio_comp->release();
}
template <typename I>
void RemoveRequest<I>::handle_remove_trash_entry(int r) {
ldout(m_cct, 10) << "r=" << r << dendl;
if (r < 0 && r != -ENOENT) {
lderr(m_cct) << "error removing trash entry: " << cpp_strerror(r) << dendl;
}
finish(0);
}
template <typename I>
void RemoveRequest<I>::finish(int r) {
ldout(m_cct, 10) << "r=" << r << dendl;
m_on_finish->complete(r);
delete this;
}
} // namespace trash
} // namespace librbd
template class librbd::trash::RemoveRequest<librbd::ImageCtx>;
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