/* Copyright 2018-2021, Barcelona Supercomputing Center (BSC), Spain Copyright 2015-2021, Johannes Gutenberg Universitaet Mainz, Germany This software was partially supported by the EC H2020 funded project NEXTGenIO (Project ID: 671951, www.nextgenio.eu). This software was partially supported by the ADA-FS project under the SPPEXA project funded by the DFG. This file is part of GekkoFS. GekkoFS is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. GekkoFS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GekkoFS. If not, see . SPDX-License-Identifier: GPL-3.0-or-later */ #ifndef GEKKOFS_CONFIG_HPP #define GEKKOFS_CONFIG_HPP #include // environment prefixes (are concatenated in env module at compile time) #define CLIENT_ENV_PREFIX "LIBGKFS_" #define DAEMON_ENV_PREFIX "GKFS_" namespace gkfs::config { constexpr auto hostfile_path = "./gkfs_hosts.txt"; constexpr auto forwarding_file_path = "./gkfs_forwarding.map"; namespace io { /* * Zero buffer before read. This is relevant if sparse files are used. * If buffer is not zeroed, sparse regions contain invalid data. */ constexpr auto zero_buffer_before_read = false; } // namespace io namespace log { constexpr auto client_log_path = "/tmp/gkfs_client.log"; constexpr auto daemon_log_path = "/tmp/gkfs_daemon.log"; constexpr auto client_log_level = "info,errors,critical,hermes"; constexpr auto daemon_log_level = 4; // info } // namespace log namespace metadata { // which metadata should be considered apart from size and mode constexpr auto use_atime = false; constexpr auto use_ctime = false; constexpr auto use_mtime = false; constexpr auto use_link_cnt = false; constexpr auto use_blocks = false; /* * If true, all chunks on the same host are removed during a metadata remove * rpc. This is a technical optimization that reduces the number of RPCs for * remove operations. This setting could be useful for future asynchronous * remove implementations where the data should not be removed immediately. */ constexpr auto implicit_data_removal = true; // metadata logic // Check for existence of file metadata before create. This done on RocksDB // level constexpr auto create_exist_check = true; } // namespace metadata namespace rpc { constexpr auto chunksize = 524288; // in bytes (e.g., 524288 == 512KB) // size of preallocated buffer to hold directory entries in rpc call constexpr auto dirents_buff_size = (8 * 1024 * 1024); // 8 mega /* * Indicates the number of concurrent progress to drive I/O operations of chunk * files to and from local file systems The value is directly mapped to created * Argobots xstreams, controlled in a single pool with ABT_snoozer scheduler */ constexpr auto daemon_io_xstreams = 8; // Number of threads used for RPC handlers at the daemon constexpr auto daemon_handler_xstreams = 4; } // namespace rpc namespace rocksdb { // Write-ahead logging of rocksdb constexpr auto use_write_ahead_log = false; } // namespace rocksdb } // namespace gkfs::config #endif // GEKKOFS_CONFIG_HPP