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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ * Copyright (C) 2013 Cloudwatt <libre.licensing@cloudwatt.com>
+ *
+ * Author: Loic Dachary <loic@dachary.org>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+#include "PGLog.h"
+#include "include/unordered_map.h"
+#include "common/ceph_context.h"
+
+using std::make_pair;
+using std::map;
+using std::ostream;
+using std::set;
+using std::string;
+
+using ceph::bufferlist;
+using ceph::decode;
+using ceph::encode;
+
+#define dout_context cct
+#define dout_subsys ceph_subsys_osd
+#undef dout_prefix
+#define dout_prefix _prefix(_dout, this)
+
+static ostream& _prefix(std::ostream *_dout, const PGLog *pglog)
+{
+ return pglog->gen_prefix(*_dout);
+}
+
+//////////////////// PGLog::IndexedLog ////////////////////
+
+void PGLog::IndexedLog::split_out_child(
+ pg_t child_pgid,
+ unsigned split_bits,
+ PGLog::IndexedLog *target)
+{
+ unindex();
+ *target = IndexedLog(pg_log_t::split_out_child(child_pgid, split_bits));
+ index();
+ target->index();
+ reset_rollback_info_trimmed_to_riter();
+}
+
+void PGLog::IndexedLog::trim(
+ CephContext* cct,
+ eversion_t s,
+ set<eversion_t> *trimmed,
+ set<string>* trimmed_dups,
+ eversion_t *write_from_dups)
+{
+ lgeneric_subdout(cct, osd, 10) << "IndexedLog::trim s=" << s << dendl;
+ ceph_assert(s <= can_rollback_to);
+ if (complete_to != log.end())
+ lgeneric_subdout(cct, osd, 20) << " complete_to " << complete_to->version << dendl;
+
+ auto earliest_dup_version =
+ log.rbegin()->version.version < cct->_conf->osd_pg_log_dups_tracked
+ ? 0u
+ : log.rbegin()->version.version - cct->_conf->osd_pg_log_dups_tracked + 1;
+
+ lgeneric_subdout(cct, osd, 20) << "earliest_dup_version = " << earliest_dup_version << dendl;
+ while (!log.empty()) {
+ const pg_log_entry_t &e = *log.begin();
+ if (e.version > s)
+ break;
+ lgeneric_subdout(cct, osd, 20) << "trim " << e << dendl;
+ if (trimmed)
+ trimmed->emplace(e.version);
+
+ unindex(e); // remove from index,
+
+ // add to dup list
+ if (e.version.version >= earliest_dup_version) {
+ if (write_from_dups != nullptr && *write_from_dups > e.version) {
+ lgeneric_subdout(cct, osd, 20) << "updating write_from_dups from " << *write_from_dups << " to " << e.version << dendl;
+ *write_from_dups = e.version;
+ }
+ dups.push_back(pg_log_dup_t(e));
+ index(dups.back());
+ uint32_t idx = 0;
+ for (const auto& extra : e.extra_reqids) {
+ int return_code = e.return_code;
+ if (return_code >= 0) {
+ auto it = e.extra_reqid_return_codes.find(idx);
+ if (it != e.extra_reqid_return_codes.end()) {
+ return_code = it->second;
+ // FIXME: we aren't setting op_returns for these extra_reqids
+ }
+ }
+ ++idx;
+
+ // note: extras have the same version as outer op
+ dups.push_back(pg_log_dup_t(e.version, extra.second,
+ extra.first, return_code));
+ index(dups.back());
+ }
+ }
+
+ bool reset_complete_to = false;
+ // we are trimming past complete_to, so reset complete_to
+ if (complete_to != log.end() && e.version >= complete_to->version)
+ reset_complete_to = true;
+ if (rollback_info_trimmed_to_riter == log.rend() ||
+ e.version == rollback_info_trimmed_to_riter->version) {
+ log.pop_front();
+ rollback_info_trimmed_to_riter = log.rend();
+ } else {
+ log.pop_front();
+ }
+
+ // reset complete_to to the beginning of the log
+ if (reset_complete_to) {
+ complete_to = log.begin();
+ if (complete_to != log.end()) {
+ lgeneric_subdout(cct, osd, 20) << " moving complete_to to "
+ << log.begin()->version << dendl;
+ } else {
+ lgeneric_subdout(cct, osd, 20) << " log is now empty" << dendl;
+ }
+ }
+ }
+
+ // we can hit an inflated `dups` b/c of https://tracker.ceph.com/issues/53729
+ // the idea is to slowly trim them over a prolonged period of time and mix
+ // omap deletes with writes (if we're here, a new log entry got added) to
+ // neither: 1) blow size of single Transaction nor 2) generate-n-accumulate
+ // large amount of tombstones in BlueStore's RocksDB.
+ // if trimming immediately is a must, then the ceph-objectstore-tool is
+ // the way to go.
+ const size_t max_dups = cct->_conf->osd_pg_log_dups_tracked;
+ for (size_t max_dups_to_trim = cct->_conf->osd_pg_log_trim_max;
+ max_dups_to_trim > 0 && dups.size() > max_dups;
+ max_dups_to_trim--) {
+ const auto& e = *dups.begin();
+ lgeneric_subdout(cct, osd, 20) << "trim dup " << e << dendl;
+ if (trimmed_dups)
+ trimmed_dups->insert(e.get_key_name());
+ unindex(e);
+ dups.pop_front();
+ }
+
+ // raise tail?
+ if (tail < s)
+ tail = s;
+ lgeneric_subdout(cct, osd, 20) << "IndexedLog::trim after trim"
+ << " dups.size()=" << dups.size()
+ << " tail=" << tail
+ << " s=" << s << dendl;
+}
+
+ostream& PGLog::IndexedLog::print(ostream& out) const
+{
+ out << *this << std::endl;
+ for (auto p = log.begin(); p != log.end(); ++p) {
+ out << *p << " " <<
+ (logged_object(p->soid) ? "indexed" : "NOT INDEXED") <<
+ std::endl;
+ ceph_assert(!p->reqid_is_indexed() || logged_req(p->reqid));
+ }
+
+ for (auto p = dups.begin(); p != dups.end(); ++p) {
+ out << *p << std::endl;
+ }
+
+ return out;
+}
+
+//////////////////// PGLog ////////////////////
+
+void PGLog::reset_backfill()
+{
+ missing.clear();
+}
+
+void PGLog::clear() {
+ missing.clear();
+ log.clear();
+ log_keys_debug.clear();
+ undirty();
+}
+
+void PGLog::clear_info_log(
+ spg_t pgid,
+ ObjectStore::Transaction *t) {
+ coll_t coll(pgid);
+ t->remove(coll, pgid.make_pgmeta_oid());
+}
+
+void PGLog::trim(
+ eversion_t trim_to,
+ pg_info_t &info,
+ bool transaction_applied,
+ bool async)
+{
+ dout(10) << __func__ << " proposed trim_to = " << trim_to << dendl;
+ // trim?
+ if (trim_to > log.tail) {
+ dout(10) << __func__ << " missing = " << missing.num_missing() << dendl;
+ // Don't assert for async_recovery_targets or backfill_targets
+ // or whenever there are missing items
+ if (transaction_applied && !async && (missing.num_missing() == 0))
+ ceph_assert(trim_to <= info.last_complete);
+
+ dout(10) << "trim " << log << " to " << trim_to << dendl;
+ log.trim(cct, trim_to, &trimmed, &trimmed_dups, &write_from_dups);
+ info.log_tail = log.tail;
+ if (log.complete_to != log.log.end())
+ dout(10) << " after trim complete_to " << log.complete_to->version << dendl;
+ }
+}
+
+void PGLog::proc_replica_log(
+ pg_info_t &oinfo,
+ const pg_log_t &olog,
+ pg_missing_t& omissing,
+ pg_shard_t from) const
+{
+ dout(10) << "proc_replica_log for osd." << from << ": "
+ << oinfo << " " << olog << " " << omissing << dendl;
+
+ if (olog.head < log.tail) {
+ dout(10) << __func__ << ": osd." << from << " does not overlap, not looking "
+ << "for divergent objects" << dendl;
+ return;
+ }
+ if (olog.head == log.head) {
+ dout(10) << __func__ << ": osd." << from << " same log head, not looking "
+ << "for divergent objects" << dendl;
+ return;
+ }
+
+ /*
+ basically what we're doing here is rewinding the remote log,
+ dropping divergent entries, until we find something that matches
+ our master log. we then reset last_update to reflect the new
+ point up to which missing is accurate.
+
+ later, in activate(), missing will get wound forward again and
+ we will send the peer enough log to arrive at the same state.
+ */
+
+ for (auto i = omissing.get_items().begin();
+ i != omissing.get_items().end();
+ ++i) {
+ dout(20) << " before missing " << i->first << " need " << i->second.need
+ << " have " << i->second.have << dendl;
+ }
+
+ auto first_non_divergent = log.log.rbegin();
+ while (1) {
+ if (first_non_divergent == log.log.rend())
+ break;
+ if (first_non_divergent->version <= olog.head) {
+ dout(20) << "merge_log point (usually last shared) is "
+ << *first_non_divergent << dendl;
+ break;
+ }
+ ++first_non_divergent;
+ }
+
+ /* Because olog.head >= log.tail, we know that both pgs must at least have
+ * the event represented by log.tail. Similarly, because log.head >= olog.tail,
+ * we know that the event represented by olog.tail must be common to both logs.
+ * Furthermore, the event represented by a log tail was necessarily trimmed,
+ * thus neither olog.tail nor log.tail can be divergent. It's
+ * possible that olog/log contain no actual events between olog.head and
+ * max(log.tail, olog.tail), however, since they might have been split out.
+ * Thus, if we cannot find an event e such that
+ * log.tail <= e.version <= log.head, the last_update must actually be
+ * max(log.tail, olog.tail).
+ */
+ eversion_t limit = std::max(olog.tail, log.tail);
+ eversion_t lu =
+ (first_non_divergent == log.log.rend() ||
+ first_non_divergent->version < limit) ?
+ limit :
+ first_non_divergent->version;
+
+ // we merge and adjust the replica's log, rollback the rollbackable divergent entry,
+ // remove the unrollbackable divergent entry and mark the according object as missing.
+ // the rollback boundary must choose crt of the olog which going to be merged.
+ // The replica log's(olog) crt will not be modified, so it could get passed
+ // to _merge_divergent_entries() directly.
+ IndexedLog folog(olog);
+ auto divergent = folog.rewind_from_head(lu);
+ _merge_divergent_entries(
+ folog,
+ divergent,
+ oinfo,
+ olog.get_can_rollback_to(),
+ omissing,
+ 0,
+ this);
+
+ if (lu < oinfo.last_update) {
+ dout(10) << " peer osd." << from << " last_update now " << lu << dendl;
+ oinfo.last_update = lu;
+ }
+
+ if (omissing.have_missing()) {
+ eversion_t first_missing =
+ omissing.get_items().at(omissing.get_rmissing().begin()->second).need;
+ oinfo.last_complete = eversion_t();
+ for (auto i = olog.log.begin(); i != olog.log.end(); ++i) {
+ if (i->version < first_missing)
+ oinfo.last_complete = i->version;
+ else
+ break;
+ }
+ } else {
+ oinfo.last_complete = oinfo.last_update;
+ }
+} // proc_replica_log
+
+/**
+ * rewind divergent entries at the head of the log
+ *
+ * This rewinds entries off the head of our log that are divergent.
+ * This is used by replicas during activation.
+ *
+ * @param newhead new head to rewind to
+ */
+void PGLog::rewind_divergent_log(eversion_t newhead,
+ pg_info_t &info, LogEntryHandler *rollbacker,
+ bool &dirty_info, bool &dirty_big_info)
+{
+ dout(10) << "rewind_divergent_log truncate divergent future " <<
+ newhead << dendl;
+
+ // We need to preserve the original crt before it gets updated in rewind_from_head().
+ // Later, in merge_object_divergent_entries(), we use it to check whether we can rollback
+ // a divergent entry or not.
+ eversion_t original_crt = log.get_can_rollback_to();
+ dout(20) << __func__ << " original_crt = " << original_crt << dendl;
+ if (info.last_complete > newhead)
+ info.last_complete = newhead;
+
+ auto divergent = log.rewind_from_head(newhead);
+ if (!divergent.empty()) {
+ mark_dirty_from(divergent.front().version);
+ }
+ for (auto &&entry: divergent) {
+ dout(10) << "rewind_divergent_log future divergent " << entry << dendl;
+ }
+ info.last_update = newhead;
+
+ _merge_divergent_entries(
+ log,
+ divergent,
+ info,
+ original_crt,
+ missing,
+ rollbacker,
+ this);
+
+ dirty_info = true;
+ dirty_big_info = true;
+}
+
+void PGLog::merge_log(pg_info_t &oinfo, pg_log_t&& olog, pg_shard_t fromosd,
+ pg_info_t &info, LogEntryHandler *rollbacker,
+ bool &dirty_info, bool &dirty_big_info)
+{
+ dout(10) << "merge_log " << olog << " from osd." << fromosd
+ << " into " << log << dendl;
+
+ // Check preconditions
+
+ // If our log is empty, the incoming log needs to have not been trimmed.
+ ceph_assert(!log.null() || olog.tail == eversion_t());
+ // The logs must overlap.
+ ceph_assert(log.head >= olog.tail && olog.head >= log.tail);
+
+ for (auto i = missing.get_items().begin();
+ i != missing.get_items().end();
+ ++i) {
+ dout(20) << "pg_missing_t sobject: " << i->first << dendl;
+ }
+
+ bool changed = false;
+
+ // extend on tail?
+ // this is just filling in history. it does not affect our
+ // missing set, as that should already be consistent with our
+ // current log.
+ eversion_t orig_tail = log.tail;
+ if (olog.tail < log.tail) {
+ dout(10) << "merge_log extending tail to " << olog.tail << dendl;
+ auto from = olog.log.begin();
+ auto to = from;
+ eversion_t last;
+ for (; to != olog.log.end(); ++to) {
+ if (to->version > log.tail)
+ break;
+ log.index(*to);
+ dout(15) << *to << dendl;
+ last = to->version;
+ }
+ mark_dirty_to(last);
+
+ // splice into our log.
+ log.log.splice(log.log.begin(),
+ std::move(olog.log), from, to);
+
+ info.log_tail = log.tail = olog.tail;
+ changed = true;
+ }
+
+ if (oinfo.stats.reported_seq < info.stats.reported_seq || // make sure reported always increases
+ oinfo.stats.reported_epoch < info.stats.reported_epoch) {
+ oinfo.stats.reported_seq = info.stats.reported_seq;
+ oinfo.stats.reported_epoch = info.stats.reported_epoch;
+ }
+ if (info.last_backfill.is_max())
+ info.stats = oinfo.stats;
+ info.hit_set = oinfo.hit_set;
+
+ // do we have divergent entries to throw out?
+ if (olog.head < log.head) {
+ rewind_divergent_log(olog.head, info, rollbacker, dirty_info, dirty_big_info);
+ changed = true;
+ }
+
+ // extend on head?
+ if (olog.head > log.head) {
+ dout(10) << "merge_log extending head to " << olog.head << dendl;
+
+ // find start point in olog
+ auto to = olog.log.end();
+ auto from = olog.log.end();
+ eversion_t lower_bound = std::max(olog.tail, orig_tail);
+ while (1) {
+ if (from == olog.log.begin())
+ break;
+ --from;
+ dout(20) << " ? " << *from << dendl;
+ if (from->version <= log.head) {
+ lower_bound = std::max(lower_bound, from->version);
+ ++from;
+ break;
+ }
+ }
+ dout(20) << "merge_log cut point (usually last shared) is "
+ << lower_bound << dendl;
+ mark_dirty_from(lower_bound);
+
+ // We need to preserve the original crt before it gets updated in rewind_from_head().
+ // Later, in merge_object_divergent_entries(), we use it to check whether we can rollback
+ // a divergent entry or not.
+ eversion_t original_crt = log.get_can_rollback_to();
+ dout(20) << __func__ << " original_crt = " << original_crt << dendl;
+ auto divergent = log.rewind_from_head(lower_bound);
+ // move aside divergent items
+ for (auto &&oe: divergent) {
+ dout(10) << "merge_log divergent " << oe << dendl;
+ }
+ log.roll_forward_to(log.head, rollbacker);
+
+ mempool::osd_pglog::list<pg_log_entry_t> new_entries;
+ new_entries.splice(new_entries.end(), olog.log, from, to);
+ append_log_entries_update_missing(
+ info.last_backfill,
+ new_entries,
+ false,
+ &log,
+ missing,
+ rollbacker,
+ this);
+
+ _merge_divergent_entries(
+ log,
+ divergent,
+ info,
+ original_crt,
+ missing,
+ rollbacker,
+ this);
+
+ info.last_update = log.head = olog.head;
+
+ // We cannot rollback into the new log entries
+ log.skip_can_rollback_to_to_head();
+
+ info.last_user_version = oinfo.last_user_version;
+ info.purged_snaps = oinfo.purged_snaps;
+ // update num_missing too
+ // we might have appended some more missing objects above
+ info.stats.stats.sum.num_objects_missing = missing.num_missing();
+
+ changed = true;
+ }
+
+ // now handle dups
+ if (merge_log_dups(olog)) {
+ changed = true;
+ }
+
+ dout(10) << "merge_log result " << log << " " << missing <<
+ " changed=" << changed << dendl;
+
+ if (changed) {
+ dirty_info = true;
+ dirty_big_info = true;
+ }
+}
+
+
+// returns true if any changes were made to log.dups
+bool PGLog::merge_log_dups(const pg_log_t& olog) {
+ dout(5) << __func__
+ << " log.dups.size()=" << log.dups.size()
+ << "olog.dups.size()=" << olog.dups.size() << dendl;
+ bool changed = false;
+
+ if (!olog.dups.empty()) {
+ if (log.dups.empty()) {
+ dout(10) << "merge_log copying olog dups to log " <<
+ olog.dups.front().version << " to " <<
+ olog.dups.back().version << dendl;
+ changed = true;
+ dirty_from_dups = eversion_t();
+ dirty_to_dups = eversion_t::max();
+ // since our log.dups is empty just copy them
+ for (const auto& i : olog.dups) {
+ log.dups.push_back(i);
+ log.index(log.dups.back());
+ }
+ } else {
+ // since our log.dups is not empty try to extend on each end
+
+ if (olog.dups.back().version > log.dups.back().version) {
+ // extend the dups's tail (i.e., newer dups)
+ dout(10) << "merge_log extending dups tail to " <<
+ olog.dups.back().version << dendl;
+ changed = true;
+
+ auto log_tail_version = log.dups.back().version;
+
+ auto insert_cursor = log.dups.end();
+ eversion_t last_shared = eversion_t::max();
+ for (auto i = olog.dups.crbegin(); i != olog.dups.crend(); ++i) {
+ if (i->version <= log_tail_version) break;
+ log.dups.insert(insert_cursor, *i);
+ last_shared = i->version;
+
+ auto prev = insert_cursor;
+ --prev;
+ // be sure to pass reference of copy in log.dups
+ log.index(*prev);
+
+ --insert_cursor; // make sure we insert in reverse order
+ }
+ mark_dirty_from_dups(last_shared);
+ }
+
+ if (olog.dups.front().version < log.dups.front().version) {
+ // extend the dups's head (i.e., older dups)
+ dout(10) << "merge_log extending dups head to " <<
+ olog.dups.front().version << dendl;
+ changed = true;
+
+ eversion_t last;
+ auto insert_cursor = log.dups.begin();
+ for (auto i = olog.dups.cbegin(); i != olog.dups.cend(); ++i) {
+ if (i->version >= insert_cursor->version) break;
+ log.dups.insert(insert_cursor, *i);
+ last = i->version;
+ auto prev = insert_cursor;
+ --prev;
+ // be sure to pass address of copy in log.dups
+ log.index(*prev);
+ }
+ mark_dirty_to_dups(last);
+ }
+ }
+ }
+
+ // remove any dup entries that overlap with pglog
+ if (!log.dups.empty() && log.dups.back().version > log.tail) {
+ dout(10) << "merge_log removed dups overlapping log entries (" <<
+ log.tail << "," << log.dups.back().version << "]" << dendl;
+ changed = true;
+
+ while (!log.dups.empty() && log.dups.back().version > log.tail) {
+ log.unindex(log.dups.back());
+ mark_dirty_from_dups(log.dups.back().version);
+ log.dups.pop_back();
+ }
+ }
+
+ dout(5) << "end of " << __func__ << " changed=" << changed
+ << " log.dups.size()=" << log.dups.size()
+ << " olog.dups.size()=" << olog.dups.size() << dendl;
+
+ return changed;
+}
+
+void PGLog::check() {
+ if (!pg_log_debug)
+ return;
+ if (log.log.size() != log_keys_debug.size()) {
+ derr << "log.log.size() != log_keys_debug.size()" << dendl;
+ derr << "actual log:" << dendl;
+ for (auto i = log.log.begin(); i != log.log.end(); ++i) {
+ derr << " " << *i << dendl;
+ }
+ derr << "log_keys_debug:" << dendl;
+ for (auto i = log_keys_debug.begin();
+ i != log_keys_debug.end();
+ ++i) {
+ derr << " " << *i << dendl;
+ }
+ }
+ ceph_assert(log.log.size() == log_keys_debug.size());
+ for (auto i = log.log.begin(); i != log.log.end(); ++i) {
+ ceph_assert(log_keys_debug.count(i->get_key_name()));
+ }
+}
+
+// non-static
+void PGLog::write_log_and_missing(
+ ObjectStore::Transaction& t,
+ map<string,bufferlist> *km,
+ const coll_t& coll,
+ const ghobject_t &log_oid,
+ bool require_rollback)
+{
+ if (needs_write()) {
+ dout(6) << "write_log_and_missing with: "
+ << "dirty_to: " << dirty_to
+ << ", dirty_from: " << dirty_from
+ << ", writeout_from: " << writeout_from
+ << ", trimmed: " << trimmed
+ << ", trimmed_dups: " << trimmed_dups
+ << ", clear_divergent_priors: " << clear_divergent_priors
+ << dendl;
+ _write_log_and_missing(
+ t, km, log, coll, log_oid,
+ dirty_to,
+ dirty_from,
+ writeout_from,
+ std::move(trimmed),
+ std::move(trimmed_dups),
+ missing,
+ !touched_log,
+ require_rollback,
+ clear_divergent_priors,
+ dirty_to_dups,
+ dirty_from_dups,
+ write_from_dups,
+ &may_include_deletes_in_missing_dirty,
+ (pg_log_debug ? &log_keys_debug : nullptr),
+ this);
+ undirty();
+ } else {
+ dout(10) << "log is not dirty" << dendl;
+ }
+}
+
+// static
+void PGLog::write_log_and_missing_wo_missing(
+ ObjectStore::Transaction& t,
+ map<string,bufferlist> *km,
+ pg_log_t &log,
+ const coll_t& coll, const ghobject_t &log_oid,
+ map<eversion_t, hobject_t> &divergent_priors,
+ bool require_rollback,
+ const DoutPrefixProvider *dpp
+ )
+{
+ _write_log_and_missing_wo_missing(
+ t, km, log, coll, log_oid,
+ divergent_priors, eversion_t::max(), eversion_t(), eversion_t(),
+ true, true, require_rollback,
+ eversion_t::max(), eversion_t(), eversion_t(), nullptr, dpp);
+}
+
+// static
+void PGLog::write_log_and_missing(
+ ObjectStore::Transaction& t,
+ map<string,bufferlist> *km,
+ pg_log_t &log,
+ const coll_t& coll,
+ const ghobject_t &log_oid,
+ const pg_missing_tracker_t &missing,
+ bool require_rollback,
+ bool *may_include_deletes_in_missing_dirty,
+ const DoutPrefixProvider *dpp)
+{
+ _write_log_and_missing(
+ t, km, log, coll, log_oid,
+ eversion_t::max(),
+ eversion_t(),
+ eversion_t(),
+ set<eversion_t>(),
+ set<string>(),
+ missing,
+ true, require_rollback, false,
+ eversion_t::max(),
+ eversion_t(),
+ eversion_t(),
+ may_include_deletes_in_missing_dirty, nullptr, dpp);
+}
+
+// static
+void PGLog::_write_log_and_missing_wo_missing(
+ ObjectStore::Transaction& t,
+ map<string,bufferlist> *km,
+ pg_log_t &log,
+ const coll_t& coll, const ghobject_t &log_oid,
+ map<eversion_t, hobject_t> &divergent_priors,
+ eversion_t dirty_to,
+ eversion_t dirty_from,
+ eversion_t writeout_from,
+ bool dirty_divergent_priors,
+ bool touch_log,
+ bool require_rollback,
+ eversion_t dirty_to_dups,
+ eversion_t dirty_from_dups,
+ eversion_t write_from_dups,
+ set<string> *log_keys_debug,
+ const DoutPrefixProvider *dpp
+ )
+{
+ ldpp_dout(dpp, 10) << "_write_log_and_missing_wo_missing, clearing up to " << dirty_to
+ << " dirty_to_dups=" << dirty_to_dups
+ << " dirty_from_dups=" << dirty_from_dups
+ << " write_from_dups=" << write_from_dups << dendl;
+ if (touch_log)
+ t.touch(coll, log_oid);
+ if (dirty_to != eversion_t()) {
+ t.omap_rmkeyrange(
+ coll, log_oid,
+ eversion_t().get_key_name(), dirty_to.get_key_name());
+ clear_up_to(log_keys_debug, dirty_to.get_key_name());
+ }
+ if (dirty_to != eversion_t::max() && dirty_from != eversion_t::max()) {
+ // dout(10) << "write_log_and_missing, clearing from " << dirty_from << dendl;
+ t.omap_rmkeyrange(
+ coll, log_oid,
+ dirty_from.get_key_name(), eversion_t::max().get_key_name());
+ clear_after(log_keys_debug, dirty_from.get_key_name());
+ }
+
+ for (auto p = log.log.begin();
+ p != log.log.end() && p->version <= dirty_to;
+ ++p) {
+ bufferlist bl(sizeof(*p) * 2);
+ p->encode_with_checksum(bl);
+ (*km)[p->get_key_name()] = std::move(bl);
+ }
+
+ for (auto p = log.log.rbegin();
+ p != log.log.rend() &&
+ (p->version >= dirty_from || p->version >= writeout_from) &&
+ p->version >= dirty_to;
+ ++p) {
+ bufferlist bl(sizeof(*p) * 2);
+ p->encode_with_checksum(bl);
+ (*km)[p->get_key_name()] = std::move(bl);
+ }
+
+ if (log_keys_debug) {
+ for (auto i = (*km).begin();
+ i != (*km).end();
+ ++i) {
+ if (i->first[0] == '_')
+ continue;
+ ceph_assert(!log_keys_debug->count(i->first));
+ log_keys_debug->insert(i->first);
+ }
+ }
+
+ // process dups after log_keys_debug is filled, so dups do not
+ // end up in that set
+ if (dirty_to_dups != eversion_t()) {
+ pg_log_dup_t min, dirty_to_dup;
+ dirty_to_dup.version = dirty_to_dups;
+ ldpp_dout(dpp, 10) << __func__ << " remove dups min=" << min.get_key_name()
+ << " to dirty_to_dup=" << dirty_to_dup.get_key_name() << dendl;
+ t.omap_rmkeyrange(
+ coll, log_oid,
+ min.get_key_name(), dirty_to_dup.get_key_name());
+ }
+ if (dirty_to_dups != eversion_t::max() && dirty_from_dups != eversion_t::max()) {
+ pg_log_dup_t max, dirty_from_dup;
+ max.version = eversion_t::max();
+ dirty_from_dup.version = dirty_from_dups;
+ ldpp_dout(dpp, 10) << __func__ << " remove dups dirty_from_dup="
+ << dirty_from_dup.get_key_name()
+ << " to max=" << max.get_key_name() << dendl;
+ t.omap_rmkeyrange(
+ coll, log_oid,
+ dirty_from_dup.get_key_name(), max.get_key_name());
+ }
+
+ ldpp_dout(dpp, 10) << __func__ << " going to encode log.dups.size()="
+ << log.dups.size() << dendl;
+ for (const auto& entry : log.dups) {
+ if (entry.version > dirty_to_dups)
+ break;
+ bufferlist bl;
+ encode(entry, bl);
+ (*km)[entry.get_key_name()] = std::move(bl);
+ }
+ ldpp_dout(dpp, 10) << __func__ << " 1st round encoded log.dups.size()="
+ << log.dups.size() << dendl;
+ for (auto p = log.dups.rbegin();
+ p != log.dups.rend() &&
+ (p->version >= dirty_from_dups || p->version >= write_from_dups) &&
+ p->version >= dirty_to_dups;
+ ++p) {
+ bufferlist bl;
+ encode(*p, bl);
+ (*km)[p->get_key_name()] = std::move(bl);
+ }
+ ldpp_dout(dpp, 10) << __func__ << " 2st round encoded log.dups.size()="
+ << log.dups.size() << dendl;
+
+ if (dirty_divergent_priors) {
+ ldpp_dout(dpp, 10) << "write_log_and_missing: writing divergent_priors"
+ << dendl;
+ encode(divergent_priors, (*km)["divergent_priors"]);
+ }
+ if (require_rollback) {
+ encode(
+ log.get_can_rollback_to(),
+ (*km)["can_rollback_to"]);
+ encode(
+ log.get_rollback_info_trimmed_to(),
+ (*km)["rollback_info_trimmed_to"]);
+ }
+ ldpp_dout(dpp, 10) << "end of " << __func__ << dendl;
+}
+
+// static
+void PGLog::_write_log_and_missing(
+ ObjectStore::Transaction& t,
+ map<string,bufferlist>* km,
+ pg_log_t &log,
+ const coll_t& coll, const ghobject_t &log_oid,
+ eversion_t dirty_to,
+ eversion_t dirty_from,
+ eversion_t writeout_from,
+ set<eversion_t> &&trimmed,
+ set<string> &&trimmed_dups,
+ const pg_missing_tracker_t &missing,
+ bool touch_log,
+ bool require_rollback,
+ bool clear_divergent_priors,
+ eversion_t dirty_to_dups,
+ eversion_t dirty_from_dups,
+ eversion_t write_from_dups,
+ bool *may_include_deletes_in_missing_dirty, // in/out param
+ set<string> *log_keys_debug,
+ const DoutPrefixProvider *dpp
+ ) {
+ ldpp_dout(dpp, 10) << __func__ << " clearing up to " << dirty_to
+ << " dirty_to_dups=" << dirty_to_dups
+ << " dirty_from_dups=" << dirty_from_dups
+ << " write_from_dups=" << write_from_dups
+ << " trimmed_dups.size()=" << trimmed_dups.size() << dendl;
+ set<string> to_remove;
+ to_remove.swap(trimmed_dups);
+ for (auto& t : trimmed) {
+ string key = t.get_key_name();
+ if (log_keys_debug) {
+ auto it = log_keys_debug->find(key);
+ ceph_assert(it != log_keys_debug->end());
+ log_keys_debug->erase(it);
+ }
+ to_remove.emplace(std::move(key));
+ }
+ trimmed.clear();
+
+ if (touch_log)
+ t.touch(coll, log_oid);
+ if (dirty_to != eversion_t()) {
+ t.omap_rmkeyrange(
+ coll, log_oid,
+ eversion_t().get_key_name(), dirty_to.get_key_name());
+ clear_up_to(log_keys_debug, dirty_to.get_key_name());
+ }
+ if (dirty_to != eversion_t::max() && dirty_from != eversion_t::max()) {
+ ldpp_dout(dpp, 10) << "write_log_and_missing, clearing from "
+ << dirty_from << dendl;
+ t.omap_rmkeyrange(
+ coll, log_oid,
+ dirty_from.get_key_name(), eversion_t::max().get_key_name());
+ clear_after(log_keys_debug, dirty_from.get_key_name());
+ }
+
+ for (auto p = log.log.begin();
+ p != log.log.end() && p->version <= dirty_to;
+ ++p) {
+ bufferlist bl(sizeof(*p) * 2);
+ p->encode_with_checksum(bl);
+ (*km)[p->get_key_name()] = std::move(bl);
+ }
+
+ for (auto p = log.log.rbegin();
+ p != log.log.rend() &&
+ (p->version >= dirty_from || p->version >= writeout_from) &&
+ p->version >= dirty_to;
+ ++p) {
+ bufferlist bl(sizeof(*p) * 2);
+ p->encode_with_checksum(bl);
+ (*km)[p->get_key_name()] = std::move(bl);
+ }
+
+ if (log_keys_debug) {
+ for (auto i = (*km).begin();
+ i != (*km).end();
+ ++i) {
+ if (i->first[0] == '_')
+ continue;
+ ceph_assert(!log_keys_debug->count(i->first));
+ log_keys_debug->insert(i->first);
+ }
+ }
+
+ // process dups after log_keys_debug is filled, so dups do not
+ // end up in that set
+ if (dirty_to_dups != eversion_t()) {
+ pg_log_dup_t min, dirty_to_dup;
+ dirty_to_dup.version = dirty_to_dups;
+ ldpp_dout(dpp, 10) << __func__ << " remove dups min=" << min.get_key_name()
+ << " to dirty_to_dup=" << dirty_to_dup.get_key_name() << dendl;
+ t.omap_rmkeyrange(
+ coll, log_oid,
+ min.get_key_name(), dirty_to_dup.get_key_name());
+ }
+ if (dirty_to_dups != eversion_t::max() && dirty_from_dups != eversion_t::max()) {
+ pg_log_dup_t max, dirty_from_dup;
+ max.version = eversion_t::max();
+ dirty_from_dup.version = dirty_from_dups;
+ ldpp_dout(dpp, 10) << __func__ << " remove dups dirty_from_dup="
+ << dirty_from_dup.get_key_name()
+ << " to max=" << max.get_key_name() << dendl;
+ t.omap_rmkeyrange(
+ coll, log_oid,
+ dirty_from_dup.get_key_name(), max.get_key_name());
+ }
+
+ ldpp_dout(dpp, 10) << __func__ << " going to encode log.dups.size()="
+ << log.dups.size() << dendl;
+ for (const auto& entry : log.dups) {
+ if (entry.version > dirty_to_dups)
+ break;
+ bufferlist bl;
+ encode(entry, bl);
+ (*km)[entry.get_key_name()] = std::move(bl);
+ }
+ ldpp_dout(dpp, 10) << __func__ << " 1st round encoded log.dups.size()="
+ << log.dups.size() << dendl;
+
+ for (auto p = log.dups.rbegin();
+ p != log.dups.rend() &&
+ (p->version >= dirty_from_dups || p->version >= write_from_dups) &&
+ p->version >= dirty_to_dups;
+ ++p) {
+ bufferlist bl;
+ encode(*p, bl);
+ (*km)[p->get_key_name()] = std::move(bl);
+ }
+ ldpp_dout(dpp, 10) << __func__ << " 2st round encoded log.dups.size()="
+ << log.dups.size() << dendl;
+
+ if (clear_divergent_priors) {
+ ldpp_dout(dpp, 10) << "write_log_and_missing: writing divergent_priors"
+ << dendl;
+ to_remove.insert("divergent_priors");
+ }
+ // since we encode individual missing items instead of a whole
+ // missing set, we need another key to store this bit of state
+ if (*may_include_deletes_in_missing_dirty) {
+ (*km)["may_include_deletes_in_missing"] = bufferlist();
+ *may_include_deletes_in_missing_dirty = false;
+ }
+ missing.get_changed(
+ [&](const hobject_t &obj) {
+ string key = string("missing/") + obj.to_str();
+ pg_missing_item item;
+ if (!missing.is_missing(obj, &item)) {
+ to_remove.insert(key);
+ } else {
+ encode(make_pair(obj, item), (*km)[key], CEPH_FEATUREMASK_SERVER_OCTOPUS);
+ }
+ });
+ if (require_rollback) {
+ encode(
+ log.get_can_rollback_to(),
+ (*km)["can_rollback_to"]);
+ encode(
+ log.get_rollback_info_trimmed_to(),
+ (*km)["rollback_info_trimmed_to"]);
+ }
+
+ if (!to_remove.empty())
+ t.omap_rmkeys(coll, log_oid, to_remove);
+ ldpp_dout(dpp, 10) << "end of " << __func__ << dendl;
+}
+
+void PGLog::rebuild_missing_set_with_deletes(
+ ObjectStore *store,
+ ObjectStore::CollectionHandle& ch,
+ const pg_info_t &info)
+{
+ // save entries not generated from the current log (e.g. added due
+ // to repair, EIO handling, or divergent_priors).
+ map<hobject_t, pg_missing_item> extra_missing;
+ for (const auto& p : missing.get_items()) {
+ if (!log.logged_object(p.first)) {
+ dout(20) << __func__ << " extra missing entry: " << p.first
+ << " " << p.second << dendl;
+ extra_missing[p.first] = p.second;
+ }
+ }
+ missing.clear();
+
+ // go through the log and add items that are not present or older
+ // versions on disk, just as if we were reading the log + metadata
+ // off disk originally
+ set<hobject_t> did;
+ for (auto i = log.log.rbegin();
+ i != log.log.rend();
+ ++i) {
+ if (i->version <= info.last_complete)
+ break;
+ if (i->soid > info.last_backfill ||
+ i->is_error() ||
+ did.find(i->soid) != did.end())
+ continue;
+ did.insert(i->soid);
+
+ bufferlist bv;
+ int r = store->getattr(
+ ch,
+ ghobject_t(i->soid, ghobject_t::NO_GEN, info.pgid.shard),
+ OI_ATTR,
+ bv);
+ dout(20) << __func__ << " check for log entry: " << *i << " = " << r << dendl;
+
+ if (r >= 0) {
+ object_info_t oi(bv);
+ dout(20) << __func__ << " store version = " << oi.version << dendl;
+ if (oi.version < i->version) {
+ missing.add(i->soid, i->version, oi.version, i->is_delete());
+ }
+ } else {
+ missing.add(i->soid, i->version, eversion_t(), i->is_delete());
+ }
+ }
+
+ for (const auto& p : extra_missing) {
+ missing.add(p.first, p.second.need, p.second.have, p.second.is_delete());
+ }
+
+ set_missing_may_contain_deletes();
+}
+
+#ifdef WITH_SEASTAR
+
+namespace {
+ struct FuturizedShardStoreLogReader {
+ crimson::os::FuturizedStore::Shard &store;
+ const pg_info_t &info;
+ PGLog::IndexedLog &log;
+ std::set<std::string>* log_keys_debug = NULL;
+ pg_missing_tracker_t &missing;
+ const DoutPrefixProvider *dpp;
+
+ eversion_t on_disk_can_rollback_to;
+ eversion_t on_disk_rollback_info_trimmed_to;
+
+ std::map<eversion_t, hobject_t> divergent_priors;
+ bool must_rebuild = false;
+ std::list<pg_log_entry_t> entries;
+ std::list<pg_log_dup_t> dups;
+
+ std::optional<std::string> next;
+
+ void process_entry(const auto& key, const auto& value) {
+ if (key[0] == '_')
+ return;
+ //Copy ceph::buffer::list before creating iterator
+ auto bl = value;
+ auto bp = bl.cbegin();
+ if (key == "divergent_priors") {
+ decode(divergent_priors, bp);
+ ldpp_dout(dpp, 20) << "read_log_and_missing " << divergent_priors.size()
+ << " divergent_priors" << dendl;
+ ceph_assert("crimson shouldn't have had divergent_priors" == 0);
+ } else if (key == "can_rollback_to") {
+ decode(on_disk_can_rollback_to, bp);
+ } else if (key == "rollback_info_trimmed_to") {
+ decode(on_disk_rollback_info_trimmed_to, bp);
+ } else if (key == "may_include_deletes_in_missing") {
+ missing.may_include_deletes = true;
+ } else if (key.substr(0, 7) == std::string("missing")) {
+ hobject_t oid;
+ pg_missing_item item;
+ decode(oid, bp);
+ decode(item, bp);
+ if (item.is_delete()) {
+ ceph_assert(missing.may_include_deletes);
+ }
+ missing.add(oid, std::move(item));
+ } else if (key.substr(0, 4) == std::string("dup_")) {
+ pg_log_dup_t dup;
+ decode(dup, bp);
+ if (!dups.empty()) {
+ ceph_assert(dups.back().version < dup.version);
+ }
+ dups.push_back(dup);
+ } else {
+ pg_log_entry_t e;
+ e.decode_with_checksum(bp);
+ ldpp_dout(dpp, 20) << "read_log_and_missing " << e << dendl;
+ if (!entries.empty()) {
+ pg_log_entry_t last_e(entries.back());
+ ceph_assert(last_e.version.version < e.version.version);
+ ceph_assert(last_e.version.epoch <= e.version.epoch);
+ }
+ entries.push_back(e);
+ if (log_keys_debug)
+ log_keys_debug->insert(e.get_key_name());
+ }
+ }
+
+ seastar::future<> read(crimson::os::CollectionRef ch,
+ ghobject_t pgmeta_oid) {
+ // will get overridden if recorded
+ on_disk_can_rollback_to = info.last_update;
+ missing.may_include_deletes = false;
+
+ return seastar::do_with(
+ std::move(ch),
+ std::move(pgmeta_oid),
+ std::make_optional<std::string>(),
+ [this](crimson::os::CollectionRef &ch,
+ ghobject_t &pgmeta_oid,
+ std::optional<std::string> &start) {
+ return seastar::repeat([this, &ch, &pgmeta_oid, &start]() {
+ return store.omap_get_values(
+ ch, pgmeta_oid, start
+ ).safe_then([this, &start](const auto& ret) {
+ const auto& [done, kvs] = ret;
+ for (const auto& [key, value] : kvs) {
+ process_entry(key, value);
+ start = key;
+ }
+ return seastar::make_ready_future<seastar::stop_iteration>(
+ done ? seastar::stop_iteration::yes : seastar::stop_iteration::no
+ );
+ }, crimson::os::FuturizedStore::Shard::read_errorator::assert_all{});
+ }).then([this] {
+ if (info.pgid.is_no_shard()) {
+ // replicated pool pg does not persist this key
+ assert(on_disk_rollback_info_trimmed_to == eversion_t());
+ on_disk_rollback_info_trimmed_to = info.last_update;
+ }
+ log = PGLog::IndexedLog(
+ info.last_update,
+ info.log_tail,
+ on_disk_can_rollback_to,
+ on_disk_rollback_info_trimmed_to,
+ std::move(entries),
+ std::move(dups));
+ });
+ });
+ }
+ };
+}
+
+seastar::future<> PGLog::read_log_and_missing_crimson(
+ crimson::os::FuturizedStore::Shard &store,
+ crimson::os::CollectionRef ch,
+ const pg_info_t &info,
+ IndexedLog &log,
+ std::set<std::string>* log_keys_debug,
+ pg_missing_tracker_t &missing,
+ ghobject_t pgmeta_oid,
+ const DoutPrefixProvider *dpp)
+{
+ ldpp_dout(dpp, 20) << "read_log_and_missing coll "
+ << ch->get_cid()
+ << " " << pgmeta_oid << dendl;
+ return seastar::do_with(FuturizedShardStoreLogReader{
+ store, info, log, log_keys_debug,
+ missing, dpp},
+ [ch, pgmeta_oid](FuturizedShardStoreLogReader& reader) {
+ return reader.read(ch, pgmeta_oid);
+ });
+}
+
+seastar::future<> PGLog::rebuild_missing_set_with_deletes_crimson(
+ crimson::os::FuturizedStore::Shard &store,
+ crimson::os::CollectionRef ch,
+ const pg_info_t &info)
+{
+ // save entries not generated from the current log (e.g. added due
+ // to repair, EIO handling, or divergent_priors).
+ map<hobject_t, pg_missing_item> extra_missing;
+ for (const auto& p : missing.get_items()) {
+ if (!log.logged_object(p.first)) {
+ ldpp_dout(this, 20) << __func__ << " extra missing entry: " << p.first
+ << " " << p.second << dendl;
+ extra_missing[p.first] = p.second;
+ }
+ }
+ missing.clear();
+
+ // go through the log and add items that are not present or older
+ // versions on disk, just as if we were reading the log + metadata
+ // off disk originally
+ return seastar::do_with(
+ set<hobject_t>(),
+ log.log.rbegin(),
+ [this, &store, ch, &info](auto &did, auto &it) {
+ return seastar::repeat([this, &store, ch, &info, &it, &did] {
+ if (it == log.log.rend()) {
+ return seastar::make_ready_future<seastar::stop_iteration>(
+ seastar::stop_iteration::yes);
+ }
+ auto &log_entry = *it;
+ it++;
+ if (log_entry.version <= info.last_complete)
+ return seastar::make_ready_future<seastar::stop_iteration>(
+ seastar::stop_iteration::yes);
+ if (log_entry.soid > info.last_backfill ||
+ log_entry.is_error() ||
+ did.find(log_entry.soid) != did.end())
+ return seastar::make_ready_future<seastar::stop_iteration>(
+ seastar::stop_iteration::no);
+ did.insert(log_entry.soid);
+ return store.get_attr(
+ ch,
+ ghobject_t(log_entry.soid, ghobject_t::NO_GEN, info.pgid.shard),
+ OI_ATTR
+ ).safe_then([this, &log_entry](auto bv) {
+ object_info_t oi(bv);
+ ldpp_dout(this, 20)
+ << "rebuild_missing_set_with_deletes_crimson found obj "
+ << log_entry.soid
+ << " version = " << oi.version << dendl;
+ if (oi.version < log_entry.version) {
+ ldpp_dout(this, 20)
+ << "rebuild_missing_set_with_deletes_crimson missing obj "
+ << log_entry.soid
+ << " for version = " << log_entry.version << dendl;
+ missing.add(
+ log_entry.soid,
+ log_entry.version,
+ oi.version,
+ log_entry.is_delete());
+ }
+ },
+ crimson::ct_error::enoent::handle([this, &log_entry] {
+ ldpp_dout(this, 20)
+ << "rebuild_missing_set_with_deletes_crimson missing object "
+ << log_entry.soid << dendl;
+ missing.add(
+ log_entry.soid,
+ log_entry.version,
+ eversion_t(),
+ log_entry.is_delete());
+ }),
+ crimson::ct_error::enodata::handle([] { ceph_abort("unexpected enodata"); })
+ ).then([] {
+ return seastar::stop_iteration::no;
+ });
+ });
+ }).then([this] {
+ set_missing_may_contain_deletes();
+ });
+}
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 21:53:24 +0000