Limit RocksDB logs size (ton-blockchain#1278)

* fix logging of failed destroy attempts

* limit rocksdb log size

tddb/td/db/RocksDb.cpp

@@ -85,6 +85,8 @@ Result<RocksDb> RocksDb::open(std::string path, RocksDbOptions options) {
     db_options.bytes_per_sync = 1 << 20;
     db_options.writable_file_max_buffer_size = 2 << 14;
     db_options.statistics = options.statistics;
+    db_options.max_log_file_size = 100 << 20;
+    db_options.keep_log_file_num = 1;
     rocksdb::OptimisticTransactionDBOptions occ_options;
     occ_options.validate_policy = rocksdb::OccValidationPolicy::kValidateSerial;
     rocksdb::ColumnFamilyOptions cf_options(db_options);

validator/db/archive-slice.cpp

@@ -768,22 +768,19 @@ void destroy_db(std::string name, td::uint32 attempt, td::Promise<td::Unit> prom
     promise.set_value(td::Unit());
     return;
   }
-  if (S.is_error() && attempt > 0 && attempt % 64 == 0) {
+  if (attempt > 0 && attempt % 64 == 0) {
     LOG(ERROR) << "failed to destroy index " << name << ": " << S;
   } else {
     LOG(DEBUG) << "failed to destroy index " << name << ": " << S;
   }
   delay_action(
-      [name, attempt, promise = std::move(promise)]() mutable { destroy_db(name, attempt, std::move(promise)); },
+      [name, attempt, promise = std::move(promise)]() mutable { destroy_db(name, attempt + 1, std::move(promise)); },
       td::Timestamp::in(1.0));
 }
 }  // namespace
 
 void ArchiveSlice::destroy(td::Promise<td::Unit> promise) {
   before_query();
-  td::MultiPromise mp;
-  auto ig = mp.init_guard();
-  ig.add_promise(std::move(promise));
   destroyed_ = true;
 
   for (auto &p : packages_) {
@@ -795,10 +792,8 @@ void ArchiveSlice::destroy(td::Promise<td::Unit> promise) {
   packages_.clear();
   kv_ = nullptr;
 
-  PackageId p_id{archive_id_, key_blocks_only_, temp_};
-  std::string db_path = PSTRING() << db_root_ << p_id.path() << p_id.name() << ".index";
-  delay_action([name = db_path, attempt = 0,
-                promise = ig.get_promise()]() mutable { destroy_db(name, attempt, std::move(promise)); },
+  delay_action([name = db_path_, attempt = 0,
+                promise = std::move(promise)]() mutable { destroy_db(name, attempt, std::move(promise)); },
                td::Timestamp::in(0.0));
 }