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Diffstat (limited to '')
| -rw-r--r-- | src/librbd/cache/pwl/LogOperation.cc | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/src/librbd/cache/pwl/LogOperation.cc b/src/librbd/cache/pwl/LogOperation.cc new file mode 100644 index 000000000..e779802f0 --- /dev/null +++ b/src/librbd/cache/pwl/LogOperation.cc @@ -0,0 +1,312 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#include <iostream> +#include "LogOperation.h" +#include "librbd/cache/pwl/Types.h" + +#define dout_subsys ceph_subsys_rbd_pwl +#undef dout_prefix +#define dout_prefix *_dout << "librbd::cache::pwl::LogOperation: " << this \ + << " " << __func__ << ": " + +namespace librbd { +namespace cache { +namespace pwl { + +GenericLogOperation::GenericLogOperation(utime_t dispatch_time, + PerfCounters *perfcounter) + : m_perfcounter(perfcounter), dispatch_time(dispatch_time) { +} + +std::ostream& GenericLogOperation::format(std::ostream &os) const { + os << "dispatch_time=[" << dispatch_time + << "], buf_persist_start_time=[" << buf_persist_start_time + << "], buf_persist_comp_time=[" << buf_persist_comp_time + << "], log_append_start_time=[" << log_append_start_time + << "], log_append_comp_time=[" << log_append_comp_time << "]"; + return os; +} + +std::ostream &operator<<(std::ostream &os, + const GenericLogOperation &op) { + return op.format(os); +} + +SyncPointLogOperation::SyncPointLogOperation(ceph::mutex &lock, + std::shared_ptr<SyncPoint> sync_point, + utime_t dispatch_time, + PerfCounters *perfcounter, + CephContext *cct) + : GenericLogOperation(dispatch_time, perfcounter), m_cct(cct), m_lock(lock), + sync_point(sync_point) { +} + +SyncPointLogOperation::~SyncPointLogOperation() { } + +std::ostream &SyncPointLogOperation::format(std::ostream &os) const { + os << "(Sync Point) "; + GenericLogOperation::format(os); + os << ", sync_point=[" << *sync_point << "]"; + return os; +} + +std::ostream &operator<<(std::ostream &os, + const SyncPointLogOperation &op) { + return op.format(os); +} + +std::vector<Context*> SyncPointLogOperation::append_sync_point() { + std::vector<Context*> appending_contexts; + std::lock_guard locker(m_lock); + if (!sync_point->appending) { + sync_point->appending = true; + } + appending_contexts.swap(sync_point->on_sync_point_appending); + return appending_contexts; +} + +void SyncPointLogOperation::clear_earlier_sync_point() { + std::lock_guard locker(m_lock); + ceph_assert(sync_point->later_sync_point); + ceph_assert(sync_point->later_sync_point->earlier_sync_point == sync_point); + sync_point->later_sync_point->earlier_sync_point = nullptr; + sync_point->later_sync_point = nullptr; +} + +std::vector<Context*> SyncPointLogOperation::swap_on_sync_point_persisted() { + std::lock_guard locker(m_lock); + std::vector<Context*> persisted_contexts; + persisted_contexts.swap(sync_point->on_sync_point_persisted); + return persisted_contexts; +} + +void SyncPointLogOperation::appending() { + ceph_assert(sync_point); + ldout(m_cct, 20) << "Sync point op=[" << *this + << "] appending" << dendl; + auto appending_contexts = append_sync_point(); + for (auto &ctx : appending_contexts) { + ctx->complete(0); + } +} + +void SyncPointLogOperation::complete(int result) { + ceph_assert(sync_point); + ldout(m_cct, 20) << "Sync point op =[" << *this + << "] completed" << dendl; + clear_earlier_sync_point(); + + /* Do append now in case completion occurred before the + * normal append callback executed, and to handle + * on_append work that was queued after the sync point + * entered the appending state. */ + appending(); + auto persisted_contexts = swap_on_sync_point_persisted(); + for (auto &ctx : persisted_contexts) { + ctx->complete(result); + } +} + +GenericWriteLogOperation::GenericWriteLogOperation(std::shared_ptr<SyncPoint> sync_point, + utime_t dispatch_time, + PerfCounters *perfcounter, + CephContext *cct) + : GenericLogOperation(dispatch_time, perfcounter), + m_lock(ceph::make_mutex(pwl::unique_lock_name( + "librbd::cache::pwl::GenericWriteLogOperation::m_lock", this))), + m_cct(cct), + sync_point(sync_point) { +} + +GenericWriteLogOperation::~GenericWriteLogOperation() { } + +std::ostream &GenericWriteLogOperation::format(std::ostream &os) const { + GenericLogOperation::format(os); + return os; +} + +std::ostream &operator<<(std::ostream &os, + const GenericWriteLogOperation &op) { + return op.format(os); +} + +/* Called when the write log operation is appending and its log position is guaranteed */ +void GenericWriteLogOperation::appending() { + Context *on_append = nullptr; + ldout(m_cct, 20) << __func__ << " " << this << dendl; + { + std::lock_guard locker(m_lock); + on_append = on_write_append; + on_write_append = nullptr; + } + if (on_append) { + ldout(m_cct, 20) << __func__ << " " << this << " on_append=" << on_append << dendl; + on_append->complete(0); + } +} + +/* Called when the write log operation is completed in all log replicas */ +void GenericWriteLogOperation::complete(int result) { + appending(); + Context *on_persist = nullptr; + ldout(m_cct, 20) << __func__ << " " << this << dendl; + { + std::lock_guard locker(m_lock); + on_persist = on_write_persist; + on_write_persist = nullptr; + } + if (on_persist) { + ldout(m_cct, 20) << __func__ << " " << this << " on_persist=" << on_persist + << dendl; + on_persist->complete(result); + } +} + +WriteLogOperation::WriteLogOperation( + WriteLogOperationSet &set, uint64_t image_offset_bytes, + uint64_t write_bytes, CephContext *cct, + std::shared_ptr<WriteLogEntry> write_log_entry) + : GenericWriteLogOperation(set.sync_point, set.dispatch_time, + set.perfcounter, cct), + log_entry(write_log_entry) { + on_write_append = set.extent_ops_appending->new_sub(); + on_write_persist = set.extent_ops_persist->new_sub(); + log_entry->sync_point_entry->writes++; + log_entry->sync_point_entry->bytes += write_bytes; +} + +WriteLogOperation::WriteLogOperation(WriteLogOperationSet &set, + uint64_t image_offset_bytes, + uint64_t write_bytes, + uint32_t data_len, + CephContext *cct, + std::shared_ptr<WriteLogEntry> writesame_log_entry) + : WriteLogOperation(set, image_offset_bytes, write_bytes, cct, + writesame_log_entry) { + is_writesame = true; +} + +WriteLogOperation::~WriteLogOperation() { } + +void WriteLogOperation::init(bool has_data, std::vector<WriteBufferAllocation>::iterator allocation, + uint64_t current_sync_gen, + uint64_t last_op_sequence_num, + bufferlist &write_req_bl, uint64_t buffer_offset, + bool persist_on_flush) { + log_entry->init(has_data, current_sync_gen, last_op_sequence_num, + persist_on_flush); + buffer_alloc = &(*allocation); + bl.substr_of(write_req_bl, buffer_offset, log_entry->write_bytes()); + log_entry->init_cache_bl(write_req_bl, buffer_offset, + log_entry->write_bytes()); +} + +std::ostream &WriteLogOperation::format(std::ostream &os) const { + std::string op_name = is_writesame ? "(Write Same) " : "(Write) "; + os << op_name; + GenericWriteLogOperation::format(os); + if (log_entry) { + os << ", log_entry=[" << *log_entry << "]"; + } else { + os << ", log_entry=nullptr"; + } + os << ", bl=[" << bl << "], buffer_alloc=" << buffer_alloc; + return os; +} + +std::ostream &operator<<(std::ostream &os, + const WriteLogOperation &op) { + return op.format(os); +} + + +void WriteLogOperation::complete(int result) { + GenericWriteLogOperation::complete(result); + m_perfcounter->tinc(l_librbd_pwl_log_op_dis_to_buf_t, + buf_persist_start_time - dispatch_time); + utime_t buf_persist_lat = buf_persist_comp_time - buf_persist_start_time; + m_perfcounter->tinc(l_librbd_pwl_log_op_buf_to_bufc_t, buf_persist_lat); + m_perfcounter->hinc(l_librbd_pwl_log_op_buf_to_bufc_t_hist, + buf_persist_lat.to_nsec(), + log_entry->ram_entry.write_bytes); + m_perfcounter->tinc(l_librbd_pwl_log_op_buf_to_app_t, + log_append_start_time - buf_persist_start_time); +} + +WriteLogOperationSet::WriteLogOperationSet(utime_t dispatched, PerfCounters *perfcounter, std::shared_ptr<SyncPoint> sync_point, + bool persist_on_flush, CephContext *cct, Context *on_finish) + : m_cct(cct), m_on_finish(on_finish), + persist_on_flush(persist_on_flush), + dispatch_time(dispatched), + perfcounter(perfcounter), + sync_point(sync_point) { + on_ops_appending = sync_point->prior_persisted_gather_new_sub(); + on_ops_persist = nullptr; + extent_ops_persist = + new C_Gather(m_cct, + new LambdaContext( [this](int r) { + ldout(this->m_cct,20) << __func__ << " " << this << " m_extent_ops_persist completed" << dendl; + if (on_ops_persist) { + on_ops_persist->complete(r); + } + m_on_finish->complete(r); + })); + auto appending_persist_sub = extent_ops_persist->new_sub(); + extent_ops_appending = + new C_Gather(m_cct, + new LambdaContext( [this, appending_persist_sub](int r) { + ldout(this->m_cct, 20) << __func__ << " " << this << " m_extent_ops_appending completed" << dendl; + on_ops_appending->complete(r); + appending_persist_sub->complete(r); + })); +} + +WriteLogOperationSet::~WriteLogOperationSet() { } + +std::ostream &operator<<(std::ostream &os, + const WriteLogOperationSet &s) { + os << "cell=" << (void*)s.cell + << ", extent_ops_appending=" << s.extent_ops_appending + << ", extent_ops_persist=" << s.extent_ops_persist; + return os; +} + +DiscardLogOperation::DiscardLogOperation(std::shared_ptr<SyncPoint> sync_point, + uint64_t image_offset_bytes, + uint64_t write_bytes, + uint32_t discard_granularity_bytes, + utime_t dispatch_time, + PerfCounters *perfcounter, + CephContext *cct) + : GenericWriteLogOperation(sync_point, dispatch_time, perfcounter, cct), + log_entry(std::make_shared<DiscardLogEntry>(sync_point->log_entry, + image_offset_bytes, + write_bytes, + discard_granularity_bytes)) { + on_write_persist = nullptr; + log_entry->sync_point_entry->writes++; + log_entry->sync_point_entry->bytes += write_bytes; +} + +DiscardLogOperation::~DiscardLogOperation() { } + +std::ostream &DiscardLogOperation::format(std::ostream &os) const { + os << "(Discard) "; + GenericWriteLogOperation::format(os); + if (log_entry) { + os << ", log_entry=[" << *log_entry << "]"; + } else { + os << ", log_entry=nullptr"; + } + return os; +} + +std::ostream &operator<<(std::ostream &os, + const DiscardLogOperation &op) { + return op.format(os); +} + +} // namespace pwl +} // namespace cache +} // namespace librbd |