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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/CreateRequest.h"
#include "include/ceph_assert.h"
#include "common/dout.h"
#include "common/errno.h"
#include "cls/rbd/cls_rbd_client.h"
#include "osdc/Striper.h"
#include "librbd/ImageCtx.h"
#include "librbd/ObjectMap.h"
#include "librbd/Utils.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::object_map::CreateRequest: "
namespace librbd {
namespace object_map {
using util::create_context_callback;
using util::create_rados_callback;
template <typename I>
CreateRequest<I>::CreateRequest(I *image_ctx, Context *on_finish)
: m_image_ctx(image_ctx), m_on_finish(on_finish) {
}
template <typename I>
void CreateRequest<I>::send() {
CephContext *cct = m_image_ctx->cct;
uint64_t max_size = m_image_ctx->size;
{
RWLock::WLocker snap_locker(m_image_ctx->snap_lock);
m_snap_ids.push_back(CEPH_NOSNAP);
for (auto it : m_image_ctx->snap_info) {
max_size = std::max(max_size, it.second.size);
m_snap_ids.push_back(it.first);
}
if (ObjectMap<>::is_compatible(m_image_ctx->layout, max_size)) {
send_object_map_resize();
return;
}
}
lderr(cct) << "image size not compatible with object map" << dendl;
m_on_finish->complete(-EINVAL);
}
template <typename I>
void CreateRequest<I>::send_object_map_resize() {
CephContext *cct = m_image_ctx->cct;
ldout(cct, 20) << __func__ << dendl;
Context *ctx = create_context_callback<
CreateRequest<I>, &CreateRequest<I>::handle_object_map_resize>(this);
C_Gather *gather_ctx = new C_Gather(cct, ctx);
for (auto snap_id : m_snap_ids) {
librados::ObjectWriteOperation op;
uint64_t snap_size = m_image_ctx->get_image_size(snap_id);
cls_client::object_map_resize(&op, Striper::get_num_objects(
m_image_ctx->layout, snap_size),
OBJECT_NONEXISTENT);
std::string oid(ObjectMap<>::object_map_name(m_image_ctx->id, snap_id));
librados::AioCompletion *comp = create_rados_callback(gather_ctx->new_sub());
int r = m_image_ctx->md_ctx.aio_operate(oid, comp, &op);
ceph_assert(r == 0);
comp->release();
}
gather_ctx->activate();
}
template <typename I>
Context *CreateRequest<I>::handle_object_map_resize(int *result) {
CephContext *cct = m_image_ctx->cct;
ldout(cct, 20) << __func__ << ": r=" << *result << dendl;
if (*result < 0) {
lderr(cct) << "object map resize failed: " << cpp_strerror(*result)
<< dendl;
}
return m_on_finish;
}
} // namespace object_map
} // namespace librbd
template class librbd::object_map::CreateRequest<librbd::ImageCtx>;
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