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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/object_map/RemoveRequest.h"
#include "common/dout.h"
#include "common/errno.h"
#include "cls/rbd/cls_rbd_client.h"
#include "librbd/ImageCtx.h"
#include "librbd/ObjectMap.h"
#include "librbd/Utils.h"
#include "include/ceph_assert.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::object_map::RemoveRequest: "
namespace librbd {
namespace object_map {
using util::create_rados_callback;
template <typename I>
RemoveRequest<I>::RemoveRequest(I *image_ctx, Context *on_finish)
: m_image_ctx(image_ctx), m_on_finish(on_finish) {
}
template <typename I>
void RemoveRequest<I>::send() {
send_remove_object_map();
}
template <typename I>
void RemoveRequest<I>::send_remove_object_map() {
CephContext *cct = m_image_ctx->cct;
ldout(cct, 20) << __func__ << dendl;
std::unique_lock image_locker{m_image_ctx->image_lock};
std::vector<uint64_t> snap_ids;
snap_ids.push_back(CEPH_NOSNAP);
for (auto it : m_image_ctx->snap_info) {
snap_ids.push_back(it.first);
}
std::lock_guard locker{m_lock};
ceph_assert(m_ref_counter == 0);
for (auto snap_id : snap_ids) {
m_ref_counter++;
std::string oid(ObjectMap<>::object_map_name(m_image_ctx->id, snap_id));
using klass = RemoveRequest<I>;
librados::AioCompletion *comp =
create_rados_callback<klass, &klass::handle_remove_object_map>(this);
int r = m_image_ctx->md_ctx.aio_remove(oid, comp);
ceph_assert(r == 0);
comp->release();
}
}
template <typename I>
Context *RemoveRequest<I>::handle_remove_object_map(int *result) {
CephContext *cct = m_image_ctx->cct;
ldout(cct, 20) << __func__ << ": r=" << *result << dendl;
{
std::lock_guard locker{m_lock};
ceph_assert(m_ref_counter > 0);
m_ref_counter--;
if (*result < 0 && *result != -ENOENT) {
lderr(cct) << "failed to remove object map: " << cpp_strerror(*result)
<< dendl;
m_error_result = *result;
}
if (m_ref_counter > 0) {
return nullptr;
}
}
if (m_error_result < 0) {
*result = m_error_result;
}
return m_on_finish;
}
} // namespace object_map
} // namespace librbd
template class librbd::object_map::RemoveRequest<librbd::ImageCtx>;
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