1 files changed, 95 insertions, 37 deletions

diff --git a/src/crimson/osd/replicated_backend.cc b/src/crimson/osd/replicated_backend.cc
index 12ee38b4370..6c8abecffaf 100644
--- a/src/crimson/osd/replicated_backend.cc
+++ b/src/crimson/osd/replicated_backend.cc
@@ -36,19 +36,59 @@ ReplicatedBackend::_read(const hobject_t& hoid,
   return store->read(coll, ghobject_t{hoid}, off, len, flags);
 }
 
+MURef<MOSDRepOp> ReplicatedBackend::new_repop_msg(
+  const pg_shard_t &pg_shard,
+  const hobject_t &hoid,
+  const bufferlist &encoded_txn,
+  const osd_op_params_t &osd_op_p,
+  epoch_t min_epoch,
+  epoch_t map_epoch,
+  const std::vector<pg_log_entry_t> &log_entries,
+  bool send_op,
+  ceph_tid_t tid)
+{
+  ceph_assert(pg_shard != whoami);
+  auto m = crimson::make_message<MOSDRepOp>(
+    osd_op_p.req_id,
+    whoami,
+    spg_t{pgid, pg_shard.shard},
+    hoid,
+    CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK,
+    map_epoch,
+    min_epoch,
+    tid,
+    osd_op_p.at_version);
+  if (send_op) {
+    m->set_data(encoded_txn);
+  } else {
+    ceph::os::Transaction t;
+    bufferlist bl;
+    encode(t, bl);
+    m->set_data(bl);
+  }
+  encode(log_entries, m->logbl);
+  m->pg_trim_to = osd_op_p.pg_trim_to;
+  m->pg_committed_to = osd_op_p.pg_committed_to;
+  m->pg_stats = pg.get_info().stats;
+  return m;
+}
+
 ReplicatedBackend::rep_op_fut_t
-ReplicatedBackend::submit_transaction(const std::set<pg_shard_t>& pg_shards,
-                                      const hobject_t& hoid,
-                                      ceph::os::Transaction&& t,
-                                      osd_op_params_t&& opp,
-                                      epoch_t min_epoch, epoch_t map_epoch,
-				      std::vector<pg_log_entry_t>&& logv)
+ReplicatedBackend::submit_transaction(
+  const std::set<pg_shard_t> &pg_shards,
+  const hobject_t& hoid,
+  crimson::osd::ObjectContextRef &&new_clone,
+  ceph::os::Transaction&& t,
+  osd_op_params_t&& opp,
+  epoch_t min_epoch, epoch_t map_epoch,
+  std::vector<pg_log_entry_t>&& logv)
 {
   LOG_PREFIX(ReplicatedBackend::submit_transaction);
   DEBUGDPP("object {}", dpp, hoid);
   auto log_entries = std::move(logv);
   auto txn = std::move(t);
   auto osd_op_p = std::move(opp);
+  auto _new_clone = std::move(new_clone);
 
   const ceph_tid_t tid = shard_services.get_tid();
   auto pending_txn =
@@ -56,45 +96,52 @@ ReplicatedBackend::submit_transaction(const std::set<pg_shard_t>& pg_shards,
   bufferlist encoded_txn;
   encode(txn, encoded_txn);
 
+  bool is_delete = false;
   for (auto &le : log_entries) {
     le.mark_unrollbackable();
+    if (le.is_delete()) {
+      is_delete = true;
+    }
   }
 
+  co_await pg.update_snap_map(log_entries, txn);
+
+  std::vector<pg_shard_t> to_push_clone;
+  std::vector<pg_shard_t> to_push_delete;
   auto sends = std::make_unique<std::vector<seastar::future<>>>();
-  for (auto pg_shard : pg_shards) {
-    if (pg_shard != whoami) {
-      auto m = crimson::make_message<MOSDRepOp>(
-	osd_op_p.req_id,
-	whoami,
-	spg_t{pgid, pg_shard.shard},
-	hoid,
-	CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK,
-	map_epoch,
-	min_epoch,
-	tid,
-	osd_op_p.at_version);
-      if (pg.should_send_op(pg_shard, hoid)) {
-	m->set_data(encoded_txn);
-      } else {
-	ceph::os::Transaction t;
-	bufferlist bl;
-	encode(t, bl);
-	m->set_data(bl);
+  for (auto &pg_shard : pg_shards) {
+    if (pg_shard == whoami) {
+      continue;
+    }
+    MURef<MOSDRepOp> m;
+    if (pg.should_send_op(pg_shard, hoid)) {
+      m = new_repop_msg(
+	pg_shard, hoid, encoded_txn, osd_op_p,
+	min_epoch, map_epoch, log_entries, true, tid);
+    } else {
+      m = new_repop_msg(
+	pg_shard, hoid, encoded_txn, osd_op_p,
+	min_epoch, map_epoch, log_entries, false, tid);
+      if (pg.is_missing_on_peer(pg_shard, hoid)) {
+	if (_new_clone) {
+	  // The head is in the push queue but hasn't been pushed yet.
+	  // We need to ensure that the newly created clone will be
+	  // pushed as well, otherwise we might skip it.
+	  // See: https://tracker.ceph.com/issues/68808
+	  to_push_clone.push_back(pg_shard);
+	}
+	if (is_delete) {
+	  to_push_delete.push_back(pg_shard);
+	}
       }
-      pending_txn->second.acked_peers.push_back({pg_shard, eversion_t{}});
-      encode(log_entries, m->logbl);
-      m->pg_trim_to = osd_op_p.pg_trim_to;
-      m->pg_committed_to = osd_op_p.pg_committed_to;
-      m->pg_stats = pg.get_info().stats;
-      // TODO: set more stuff. e.g., pg_states
-      sends->emplace_back(
-	shard_services.send_to_osd(
-	  pg_shard.osd, std::move(m), map_epoch));
     }
+    pending_txn->second.acked_peers.push_back({pg_shard, eversion_t{}});
+    // TODO: set more stuff. e.g., pg_states
+    sends->emplace_back(
+      shard_services.send_to_osd(
+	pg_shard.osd, std::move(m), map_epoch));
   }
 
-  co_await pg.update_snap_map(log_entries, txn);
-
   pg.log_operation(
     std::move(log_entries),
     osd_op_p.pg_trim_to,
@@ -120,9 +167,20 @@ ReplicatedBackend::submit_transaction(const std::set<pg_shard_t>& pg_shards,
       return seastar::now();
     }
     return peers->all_committed.get_shared_future();
-  }).then_interruptible([pending_txn, this] {
+  }).then_interruptible([pending_txn, this, _new_clone, &hoid,
+			to_push_delete=std::move(to_push_delete),
+			to_push_clone=std::move(to_push_clone)] {
     auto acked_peers = std::move(pending_txn->second.acked_peers);
     pending_trans.erase(pending_txn);
+    if (_new_clone && !to_push_clone.empty()) {
+      pg.enqueue_push_for_backfill(
+	_new_clone->obs.oi.soid,
+	_new_clone->obs.oi.version,
+	to_push_clone);
+    }
+    if (!to_push_delete.empty()) {
+      pg.enqueue_delete_for_backfill(hoid, {}, to_push_delete);
+    }
     return seastar::make_ready_future<
       crimson::osd::acked_peers_t>(std::move(acked_peers));
   });