db_bdb: move log_set_config call before open

This is a precaution for older Berkeley DB versions.

- smooth reports an issue running with 4.7:
  DB_ENV->log_set_config: DB_LOG_IN_MEMORY: method not permitted
  after handle's open method
- this works just fine with 5.3
- we do not use DB_LOG_IN_MEMORY, but we use DB_LOG_AUTO_REMOVE
- libdb docs say some flags must be set before open, and some
  may be set at any time, but never say some must be set after
  open
- moving the call to log_set_config before open works with 5.3

Therefore, it seems best to move the call before open.
This commit is contained in:
moneromooo-monero 2015-12-07 19:18:34 +00:00
parent 0252ffc37b
commit 1c8262c527
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@ -780,13 +780,13 @@ void BlockchainBDB::open(const std::string& filename, const int db_flags)
m_env->set_lk_max_lockers(DB_MAX_LOCKS);
m_env->set_lk_max_objects(DB_MAX_LOCKS);
if(m_auto_remove_logs)
m_env->log_set_config(DB_LOG_AUTO_REMOVE, 1);
// last parameter left 0, files will be created with default rw access
m_env->open(filename.c_str(), db_env_open_flags, 0);
m_env->set_flags(db_flags, 1);
if(m_auto_remove_logs)
m_env->log_set_config(DB_LOG_AUTO_REMOVE, 1);
// begin transaction to init dbs
bdb_txn_safe txn;
m_env->txn_begin(NULL, txn, 0);