librbd/ObjectMap.cc
librbd/Utils.cc
librbd/object_map/InvalidateRequest.cc
+ librbd/object_map/LockRequest.cc
librbd/object_map/Request.cc
+ librbd/object_map/RefreshRequest.cc
librbd/object_map/ResizeRequest.cc
librbd/object_map/SnapshotCreateRequest.cc
librbd/object_map/SnapshotRemoveRequest.cc
librbd/object_map/SnapshotRollbackRequest.cc
+ librbd/object_map/UnlockRequest.cc
librbd/object_map/UpdateRequest.cc
librbd/operation/FlattenRequest.cc
librbd/operation/RebuildObjectMapRequest.cc
librbd/ObjectMap.cc \
librbd/Utils.cc \
librbd/object_map/InvalidateRequest.cc \
+ librbd/object_map/LockRequest.cc \
librbd/object_map/Request.cc \
+ librbd/object_map/RefreshRequest.cc \
librbd/object_map/ResizeRequest.cc \
librbd/object_map/SnapshotCreateRequest.cc \
librbd/object_map/SnapshotRemoveRequest.cc \
librbd/object_map/SnapshotRollbackRequest.cc \
+ librbd/object_map/UnlockRequest.cc \
librbd/object_map/UpdateRequest.cc \
librbd/operation/FlattenRequest.cc \
librbd/operation/RebuildObjectMapRequest.cc \
librbd/Utils.h \
librbd/WatchNotifyTypes.h \
librbd/object_map/InvalidateRequest.h \
+ librbd/object_map/LockRequest.h \
librbd/object_map/Request.h \
+ librbd/object_map/RefreshRequest.h \
librbd/object_map/ResizeRequest.h \
librbd/object_map/SnapshotCreateRequest.h \
librbd/object_map/SnapshotRemoveRequest.h \
librbd/object_map/SnapshotRollbackRequest.h \
+ librbd/object_map/UnlockRequest.h \
librbd/object_map/UpdateRequest.h \
librbd/operation/FlattenRequest.h \
librbd/operation/RebuildObjectMapRequest.h \
#include "librbd/ImageWatcher.h"
#include "librbd/internal.h"
#include "librbd/object_map/InvalidateRequest.h"
+#include "librbd/object_map/LockRequest.h"
+#include "librbd/object_map/RefreshRequest.h"
#include "librbd/object_map/ResizeRequest.h"
#include "librbd/object_map/SnapshotCreateRequest.h"
#include "librbd/object_map/SnapshotRemoveRequest.h"
#include "librbd/object_map/SnapshotRollbackRequest.h"
+#include "librbd/object_map/UnlockRequest.h"
#include "librbd/object_map/UpdateRequest.h"
#include "librbd/Utils.h"
#include "common/dout.h"
namespace librbd {
+namespace {
+
+struct C_ApplyRefresh : public Context {
+ object_map::RefreshRequest<> *request;
+ C_ApplyRefresh(object_map::RefreshRequest<> *request) : request(request) {
+ }
+ virtual void finish(int r) {
+ if (r < 0) {
+ request->apply();
+ } else {
+ request->discard();
+ }
+ }
+};
+
+} // anonymous namespace
+
ObjectMap::ObjectMap(ImageCtx &image_ctx)
: m_image_ctx(image_ctx), m_snap_id(CEPH_NOSNAP), m_enabled(false)
{
return 0;
}
+void ObjectMap::lock(Context *on_finish) {
+ object_map::LockRequest<> *req = new object_map::LockRequest<>(
+ m_image_ctx, on_finish);
+ req->send();
+}
+
int ObjectMap::unlock()
{
if (!m_image_ctx.test_features(RBD_FEATURE_OBJECT_MAP)) {
return r;
}
+void ObjectMap::unlock(Context *on_finish) {
+ object_map::UnlockRequest<> *req = new object_map::UnlockRequest<>(
+ m_image_ctx, on_finish);
+ req->send();
+}
+
bool ObjectMap::object_may_exist(uint64_t object_no) const
{
// Fall back to default logic if object map is disabled or invalid
}
}
+Context* ObjectMap::refresh(uint64_t snap_id, Context *on_finish) {
+ object_map::RefreshRequest<> *req = new object_map::RefreshRequest<>(
+ m_image_ctx, &m_object_map, snap_id, on_finish);
+ req->send();
+ return new C_ApplyRefresh(req);
+}
+
void ObjectMap::rollback(uint64_t snap_id, Context *on_finish) {
assert(m_image_ctx.snap_lock.is_locked());
assert(m_image_ctx.object_map_lock.is_wlocked());
return m_object_map.size();
}
- int lock();
- int unlock();
+ int lock(); // TODO remove
+ void lock(Context *on_finish);
+ int unlock(); // TODO remove
+ void unlock(Context *on_finish);
bool object_may_exist(uint64_t object_no) const;
const boost::optional<uint8_t> ¤t_state,
Context *on_finish);
- void refresh(uint64_t snap_id);
+ void refresh(uint64_t snap_id); // TODO remove
+ Context *refresh(uint64_t snap_id, Context *on_finish);
void rollback(uint64_t snap_id, Context *on_finish);
void snapshot_add(uint64_t snap_id, Context *on_finish);
void snapshot_remove(uint64_t snap_id, Context *on_finish);
--- /dev/null
+// -*- mode:C; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "librbd/object_map/LockRequest.h"
+#include "cls/lock/cls_lock_client.h"
+#include "common/dout.h"
+#include "common/errno.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::LockRequest: "
+
+namespace librbd {
+namespace object_map {
+
+using util::create_rados_ack_callback;
+using util::create_rados_safe_callback;
+
+template <typename I>
+LockRequest<I>::LockRequest(I &image_ctx, Context *on_finish)
+ : m_image_ctx(image_ctx), m_on_finish(on_finish), m_broke_lock(false) {
+}
+
+template <typename I>
+void LockRequest<I>::send() {
+ send_lock();
+}
+
+template <typename I>
+void LockRequest<I>::send_lock() {
+ CephContext *cct = m_image_ctx.cct;
+ std::string oid(ObjectMap::object_map_name(m_image_ctx.id, CEPH_NOSNAP));
+ ldout(cct, 10) << this << " " << __func__ << ": oid=" << oid << dendl;
+
+ librados::ObjectWriteOperation op;
+ rados::cls::lock::lock(&op, RBD_LOCK_NAME, LOCK_EXCLUSIVE, "", "", "",
+ utime_t(), 0);
+
+ using klass = LockRequest<I>;
+ librados::AioCompletion *rados_completion =
+ create_rados_safe_callback<klass, &klass::handle_lock>(this);
+ int r = m_image_ctx.md_ctx.aio_operate(oid, rados_completion, &op);
+ assert(r == 0);
+ rados_completion->release();
+}
+
+template <typename I>
+Context *LockRequest<I>::handle_lock(int *ret_val) {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << this << " " << __func__ << ": r=" << *ret_val << dendl;
+
+ if (*ret_val == 0) {
+ return m_on_finish;
+ } else if (m_broke_lock || *ret_val != -EBUSY) {
+ lderr(cct) << "failed to lock object map: " << cpp_strerror(*ret_val)
+ << dendl;
+ *ret_val = 0;
+ return m_on_finish;
+ }
+
+ send_get_lock_info();
+ return nullptr;
+}
+
+template <typename I>
+void LockRequest<I>::send_get_lock_info() {
+ CephContext *cct = m_image_ctx.cct;
+ std::string oid(ObjectMap::object_map_name(m_image_ctx.id, CEPH_NOSNAP));
+ ldout(cct, 10) << this << " " << __func__ << ": oid=" << oid << dendl;
+
+ librados::ObjectReadOperation op;
+ rados::cls::lock::get_lock_info_start(&op, RBD_LOCK_NAME);
+
+ using klass = LockRequest<I>;
+ librados::AioCompletion *rados_completion =
+ create_rados_ack_callback<klass, &klass::handle_get_lock_info>(this);
+ int r = m_image_ctx.md_ctx.aio_operate(oid, rados_completion, &op, &m_out_bl);
+ assert(r == 0);
+ rados_completion->release();
+}
+
+template <typename I>
+Context *LockRequest<I>::handle_get_lock_info(int *ret_val) {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << this << " " << __func__ << ": r=" << *ret_val << dendl;
+
+ if (*ret_val == -ENOENT) {
+ send_lock();
+ return nullptr;
+ }
+
+ ClsLockType lock_type;
+ std::string lock_tag;
+ if (*ret_val == 0) {
+ bufferlist::iterator it = m_out_bl.begin();
+ *ret_val = rados::cls::lock::get_lock_info_finish(&it, &m_lockers,
+ &lock_type, &lock_tag);
+ }
+ if (*ret_val < 0) {
+ lderr(cct) << "failed to list object map locks: " << cpp_strerror(*ret_val)
+ << dendl;
+ *ret_val = 0;
+ return m_on_finish;
+ }
+
+ send_break_locks();
+ return nullptr;
+}
+
+template <typename I>
+void LockRequest<I>::send_break_locks() {
+ CephContext *cct = m_image_ctx.cct;
+ std::string oid(ObjectMap::object_map_name(m_image_ctx.id, CEPH_NOSNAP));
+ ldout(cct, 10) << this << " " << __func__ << ": oid=" << oid << ", "
+ << "num_lockers=" << m_lockers.size() << dendl;
+
+ librados::ObjectWriteOperation op;
+ for (auto &locker : m_lockers) {
+ rados::cls::lock::break_lock(&op, RBD_LOCK_NAME, locker.first.cookie,
+ locker.first.locker);
+ }
+
+ using klass = LockRequest<I>;
+ librados::AioCompletion *rados_completion =
+ create_rados_safe_callback<klass, &klass::handle_break_locks>(this);
+ int r = m_image_ctx.md_ctx.aio_operate(oid, rados_completion, &op);
+ assert(r == 0);
+ rados_completion->release();
+}
+
+template <typename I>
+Context *LockRequest<I>::handle_break_locks(int *ret_val) {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << this << " " << __func__ << ": r=" << *ret_val << dendl;
+
+ m_broke_lock = true;
+ if (*ret_val == 0 || *ret_val == -ENOENT) {
+ send_lock();
+ return nullptr;
+ }
+
+ lderr(cct) << "failed to break object map lock: " << cpp_strerror(*ret_val)
+ << dendl;
+ *ret_val = 0;
+ return m_on_finish;
+}
+
+} // namespace object_map
+} // namespace librbd
+
+template class librbd::object_map::LockRequest<librbd::ImageCtx>;
--- /dev/null
+// -*- mode:C; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_OBJECT_MAP_LOCK_REQUEST_H
+#define CEPH_LIBRBD_OBJECT_MAP_LOCK_REQUEST_H
+
+#include "include/int_types.h"
+#include "include/buffer.h"
+#include "include/Context.h"
+#include "cls/lock/cls_lock_types.h"
+#include <map>
+
+namespace librbd {
+
+class ImageCtx;
+
+namespace object_map {
+
+template <typename ImageCtxT = ImageCtx>
+class LockRequest {
+public:
+ LockRequest(ImageCtxT &image_ctx, Context *on_finish);
+
+ void send();
+
+private:
+ /**
+ * @verbatim
+ *
+ * <start> /------------------------------------- BREAK_LOCKS * * *
+ * | | ^ *
+ * | | | *
+ * | | | *
+ * | v (EBUSY && !broke_lock) | *
+ * \---------> LOCK_OBJECT_MAP * * * * * * * * * * * > GET_LOCK_INFO * *
+ * | * ^ * *
+ * | * * * *
+ * | * * (ENOENT) * *
+ * | * * * * * * * * * * * * * * * * * *
+ * | * *
+ * | * (other errors) *
+ * | * *
+ * v v (other errors) *
+ * <finish> < * * * * * * * * * * * * * * * * * * * * * * * *
+ *
+ * @endverbatim
+ */
+
+ ImageCtxT &m_image_ctx;
+ Context *m_on_finish;
+
+ bool m_broke_lock;
+ std::map<rados::cls::lock::locker_id_t,
+ rados::cls::lock::locker_info_t> m_lockers;
+ bufferlist m_out_bl;
+
+ void send_lock();
+ Context *handle_lock(int *ret_val);
+
+ void send_get_lock_info();
+ Context *handle_get_lock_info(int *ret_val);
+
+ void send_break_locks();
+ Context *handle_break_locks(int *ret_val);
+};
+
+} // namespace object_map
+} // namespace librbd
+
+extern template class librbd::object_map::LockRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_OBJECT_MAP_LOCK_REQUEST_H
--- /dev/null
+// -*- mode:C; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "librbd/object_map/RefreshRequest.h"
+#include "cls/rbd/cls_rbd_client.h"
+#include "cls/lock/cls_lock_client.h"
+#include "common/dout.h"
+#include "common/errno.h"
+#include "librbd/ImageCtx.h"
+#include "librbd/ObjectMap.h"
+#include "librbd/object_map/InvalidateRequest.h"
+#include "librbd/object_map/ResizeRequest.h"
+#include "librbd/Utils.h"
+#include "osdc/Striper.h"
+
+#define dout_subsys ceph_subsys_rbd
+#undef dout_prefix
+#define dout_prefix *_dout << "librbd::object_map::RefreshRequest: "
+
+namespace librbd {
+
+using util::create_context_callback;
+using util::create_rados_ack_callback;
+using util::create_rados_safe_callback;
+
+namespace object_map {
+
+template <typename I>
+RefreshRequest<I>::RefreshRequest(I &image_ctx, ceph::BitVector<2> *object_map,
+ uint64_t snap_id, Context *on_finish)
+ : m_image_ctx(image_ctx), m_object_map(object_map), m_snap_id(snap_id),
+ m_on_finish(on_finish), m_object_count(0),
+ m_truncate_on_disk_object_map(false) {
+}
+
+template <typename I>
+void RefreshRequest<I>::send() {
+ {
+ RWLock::RLocker snap_locker(m_image_ctx.snap_lock);
+ m_object_count = Striper::get_num_objects(
+ m_image_ctx.layout, m_image_ctx.get_image_size(m_snap_id));
+ }
+
+ send_load();
+}
+
+template <typename I>
+void RefreshRequest<I>::apply() {
+ uint64_t num_objs;
+ {
+ RWLock::RLocker snap_locker(m_image_ctx.snap_lock);
+ num_objs = Striper::get_num_objects(
+ m_image_ctx.layout, m_image_ctx.get_image_size(m_snap_id));
+ }
+ assert(m_on_disk_object_map.size() >= num_objs);
+
+ *m_object_map = m_on_disk_object_map;
+}
+
+template <typename I>
+void RefreshRequest<I>::send_load() {
+ CephContext *cct = m_image_ctx.cct;
+ std::string oid(ObjectMap::object_map_name(m_image_ctx.id, m_snap_id));
+ ldout(cct, 10) << this << " " << __func__ << ": oid=" << oid << dendl;
+
+ librados::ObjectReadOperation op;
+ cls_client::object_map_load_start(&op);
+
+ using klass = RefreshRequest<I>;
+ m_out_bl.clear();
+ librados::AioCompletion *rados_completion =
+ create_rados_ack_callback<klass, &klass::handle_load>(this);
+ int r = m_image_ctx.md_ctx.aio_operate(oid, rados_completion, &op, &m_out_bl);
+ assert(r == 0);
+ rados_completion->release();
+}
+
+template <typename I>
+Context *RefreshRequest<I>::handle_load(int *ret_val) {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << this << " " << __func__ << ": r=" << *ret_val << dendl;
+
+ if (*ret_val == 0) {
+ bufferlist::iterator bl_it = m_out_bl.begin();
+ *ret_val = cls_client::object_map_load_finish(&bl_it,
+ &m_on_disk_object_map);
+ }
+
+ std::string oid(ObjectMap::object_map_name(m_image_ctx.id, m_snap_id));
+ if (*ret_val == -EINVAL) {
+ // object map is corrupt on-disk -- clear it and properly size it
+ // so future IO can keep the object map in sync
+ lderr(cct) << "object map corrupt on-disk: " << oid << dendl;
+ m_truncate_on_disk_object_map = true;
+ send_resize_invalidate();
+ return nullptr;
+ } else if (*ret_val < 0) {
+ lderr(cct) << "failed to load object map: " << oid << dendl;
+ send_invalidate();
+ return nullptr;
+ }
+
+ if (m_on_disk_object_map.size() < m_object_count) {
+ lderr(cct) << "object map smaller than current object count: "
+ << m_on_disk_object_map.size() << " != "
+ << m_object_count << dendl;
+ send_resize_invalidate();
+ return nullptr;
+ }
+
+ ldout(cct, 20) << "refreshed object map: num_objs="
+ << m_on_disk_object_map.size() << dendl;
+ if (m_on_disk_object_map.size() > m_object_count) {
+ // resize op might have been interrupted
+ ldout(cct, 1) << "object map larger than current object count: "
+ << m_on_disk_object_map.size() << " != "
+ << m_object_count << dendl;
+ }
+
+ apply();
+ return m_on_finish;
+}
+
+template <typename I>
+void RefreshRequest<I>::send_invalidate() {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << this << " " << __func__ << dendl;
+
+ m_on_disk_object_map.clear();
+ object_map::ResizeRequest::resize(&m_on_disk_object_map, m_object_count,
+ OBJECT_EXISTS);
+
+ using klass = RefreshRequest<I>;
+ Context *ctx = create_context_callback<
+ klass, &klass::handle_invalidate>(this);
+ InvalidateRequest<I> *req = InvalidateRequest<I>::create(
+ m_image_ctx, m_snap_id, false, ctx);
+
+ RWLock::RLocker owner_locker(m_image_ctx.owner_lock);
+ RWLock::WLocker snap_locker(m_image_ctx.snap_lock);
+ req->send();
+}
+
+template <typename I>
+Context *RefreshRequest<I>::handle_invalidate(int *ret_val) {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << this << " " << __func__ << ": r=" << *ret_val << dendl;
+
+ assert(*ret_val == 0);
+ apply();
+ return m_on_finish;
+}
+
+template <typename I>
+void RefreshRequest<I>::send_resize_invalidate() {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << this << " " << __func__ << dendl;
+
+ m_on_disk_object_map.clear();
+ object_map::ResizeRequest::resize(&m_on_disk_object_map, m_object_count,
+ OBJECT_EXISTS);
+
+ using klass = RefreshRequest<I>;
+ Context *ctx = create_context_callback<
+ klass, &klass::handle_resize_invalidate>(this);
+ InvalidateRequest<I> *req = InvalidateRequest<I>::create(
+ m_image_ctx, m_snap_id, false, ctx);
+
+ RWLock::RLocker owner_locker(m_image_ctx.owner_lock);
+ RWLock::WLocker snap_locker(m_image_ctx.snap_lock);
+ req->send();
+}
+
+template <typename I>
+Context *RefreshRequest<I>::handle_resize_invalidate(int *ret_val) {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << this << " " << __func__ << ": r=" << *ret_val << dendl;
+
+ assert(*ret_val == 0);
+ send_resize();
+ return nullptr;
+}
+
+template <typename I>
+void RefreshRequest<I>::send_resize() {
+ CephContext *cct = m_image_ctx.cct;
+ std::string oid(ObjectMap::object_map_name(m_image_ctx.id, m_snap_id));
+ ldout(cct, 10) << this << " " << __func__ << ": oid=" << oid << dendl;
+
+ librados::ObjectWriteOperation op;
+ if (m_snap_id == CEPH_NOSNAP) {
+ rados::cls::lock::assert_locked(&op, RBD_LOCK_NAME, LOCK_EXCLUSIVE, "", "");
+ }
+ if (m_truncate_on_disk_object_map) {
+ op.truncate(0);
+ }
+ cls_client::object_map_resize(&op, m_object_count, OBJECT_NONEXISTENT);
+
+ using klass = RefreshRequest<I>;
+ librados::AioCompletion *rados_completion =
+ create_rados_safe_callback<klass, &klass::handle_resize>(this);
+ int r = m_image_ctx.md_ctx.aio_operate(oid, rados_completion, &op);
+ assert(r == 0);
+ rados_completion->release();
+}
+
+template <typename I>
+Context *RefreshRequest<I>::handle_resize(int *ret_val) {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << this << " " << __func__ << ": r=" << *ret_val << dendl;
+
+ if (*ret_val < 0) {
+ lderr(cct) << "failed to adjust object map size: " << cpp_strerror(*ret_val)
+ << dendl;
+ *ret_val = 0;
+ }
+ apply();
+ return m_on_finish;
+}
+
+} // namespace object_map
+} // namespace librbd
+
+template class librbd::object_map::RefreshRequest<librbd::ImageCtx>;
--- /dev/null
+// -*- mode:C; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_OBJECT_MAP_REFRESH_REQUEST_H
+#define CEPH_LIBRBD_OBJECT_MAP_REFRESH_REQUEST_H
+
+#include "include/int_types.h"
+#include "include/buffer.h"
+#include "include/Context.h"
+#include "common/bit_vector.hpp"
+
+namespace librbd {
+
+class ImageCtx;
+
+namespace object_map {
+
+template <typename ImageCtxT = ImageCtx>
+class RefreshRequest {
+public:
+ RefreshRequest(ImageCtxT &image_ctx, ceph::BitVector<2> *object_map,
+ uint64_t snap_id, Context *on_finish);
+
+ void send();
+
+private:
+ /**
+ * @verbatim
+ * (other errors)
+ * <start> -----> LOAD * * * * * * * > INVALIDATE ------------\
+ * | * |
+ * | * (-EINVAL or too small) |
+ * | * * * * * * > INVALIDATE_AND_RESIZE |
+ * | | * |
+ * | | * |
+ * | v * |
+ * | RESIZE * |
+ * | | * |
+ * | | * * * * * * * |
+ * | | * |
+ * | v v |
+ * \-----------------> <finish> <------------/
+ * @endverbatim
+ */
+
+ ImageCtxT &m_image_ctx;
+ ceph::BitVector<2> *m_object_map;
+ uint64_t m_snap_id;
+ Context *m_on_finish;
+
+ uint64_t m_object_count;
+ ceph::BitVector<2> m_on_disk_object_map;
+ bool m_truncate_on_disk_object_map;
+ bufferlist m_out_bl;
+
+ void send_load();
+ Context *handle_load(int *ret_val);
+
+ void send_invalidate();
+ Context *handle_invalidate(int *ret_val);
+
+ void send_resize_invalidate();
+ Context *handle_resize_invalidate(int *ret_val);
+
+ void send_resize();
+ Context *handle_resize(int *ret_val);
+
+ void apply();
+};
+
+} // namespace object_map
+} // namespace librbd
+
+extern template class librbd::object_map::RefreshRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_OBJECT_MAP_REFRESH_REQUEST_H
--- /dev/null
+// -*- mode:C; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "librbd/object_map/UnlockRequest.h"
+#include "cls/lock/cls_lock_client.h"
+#include "common/dout.h"
+#include "common/errno.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::UnlockRequest: "
+
+namespace librbd {
+namespace object_map {
+
+using util::create_rados_safe_callback;
+
+template <typename I>
+UnlockRequest<I>::UnlockRequest(I &image_ctx, Context *on_finish)
+ : m_image_ctx(image_ctx), m_on_finish(on_finish) {
+}
+
+template <typename I>
+void UnlockRequest<I>::send() {
+ send_unlock();
+}
+
+template <typename I>
+void UnlockRequest<I>::send_unlock() {
+ CephContext *cct = m_image_ctx.cct;
+ std::string oid(ObjectMap::object_map_name(m_image_ctx.id, CEPH_NOSNAP));
+ ldout(cct, 10) << this << " " << __func__ << ": oid=" << oid << dendl;
+
+ librados::ObjectWriteOperation op;
+ rados::cls::lock::unlock(&op, RBD_LOCK_NAME, "");
+
+ using klass = UnlockRequest<I>;
+ librados::AioCompletion *rados_completion =
+ create_rados_safe_callback<klass, &klass::handle_unlock>(this);
+ int r = m_image_ctx.md_ctx.aio_operate(oid, rados_completion, &op);
+ assert(r == 0);
+ rados_completion->release();
+}
+
+template <typename I>
+Context *UnlockRequest<I>::handle_unlock(int *ret_val) {
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 10) << this << " " << __func__ << ": r=" << *ret_val << dendl;
+
+ if (*ret_val < 0 && *ret_val != -ENOENT) {
+ lderr(m_image_ctx.cct) << "failed to release object map lock: "
+ << cpp_strerror(*ret_val) << dendl;
+
+ }
+
+ *ret_val = 0;
+ return m_on_finish;
+}
+
+} // namespace object_map
+} // namespace librbd
+
+template class librbd::object_map::UnlockRequest<librbd::ImageCtx>;
--- /dev/null
+// -*- mode:C; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_OBJECT_MAP_UNLOCK_REQUEST_H
+#define CEPH_LIBRBD_OBJECT_MAP_UNLOCK_REQUEST_H
+
+#include "include/int_types.h"
+#include "include/buffer.h"
+#include "include/Context.h"
+#include <map>
+
+namespace librbd {
+
+class ImageCtx;
+
+namespace object_map {
+
+template <typename ImageCtxT = ImageCtx>
+class UnlockRequest {
+public:
+ UnlockRequest(ImageCtxT &image_ctx, Context *on_finish);
+
+ void send();
+
+private:
+ /**
+ * @verbatim
+ *
+ * <start> ----> UNLOCK ----> <finish>
+ *
+ * @endverbatim
+ */
+
+ ImageCtxT &m_image_ctx;
+ Context *m_on_finish;
+
+ void send_unlock();
+ Context* handle_unlock(int *ret_val);
+};
+
+} // namespace object_map
+} // namespace librbd
+
+extern template class librbd::object_map::UnlockRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_OBJECT_MAP_UNLOCK_REQUEST_H
projects / ceph.git / commitdiff