1 2 /** 3 * Copyright (C) 2018-present MongoDB, Inc. 4 * 5 * This program is free software: you can redistribute it and/or modify 6 * it under the terms of the Server Side Public License, version 1, 7 * as published by MongoDB, Inc. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * Server Side Public License for more details. 13 * 14 * You should have received a copy of the Server Side Public License 15 * along with this program. If not, see 16 * <http://www.mongodb.com/licensing/server-side-public-license>. 17 * 18 * As a special exception, the copyright holders give permission to link the 19 * code of portions of this program with the OpenSSL library under certain 20 * conditions as described in each individual source file and distribute 21 * linked combinations including the program with the OpenSSL library. You 22 * must comply with the Server Side Public License in all respects for 23 * all of the code used other than as permitted herein. If you modify file(s) 24 * with this exception, you may extend this exception to your version of the 25 * file(s), but you are not obligated to do so. If you do not wish to do so, 26 * delete this exception statement from your version. If you delete this 27 * exception statement from all source files in the program, then also delete 28 * it in the license file. 29 */ 30 31 #pragma once 32 33 #include <string> 34 35 /* 36 * This file defines the storage for options that come from the command line related to the 37 * mmap v1 storage engine. 38 */ 39 40 namespace mongo { 41 42 struct MMAPV1Options { MMAPV1OptionsMMAPV1Options43 MMAPV1Options() 44 : lenForNewNsFiles(16 * 1024 * 1024), 45 preallocj(true), 46 prealloc(false), 47 quota(false), 48 quotaFiles(8) {} 49 50 // --nssize 51 // Specifies the default size for namespace files, which are files that end in .ns. 52 // Each collection and index counts as a namespace. 53 unsigned lenForNewNsFiles; 54 55 bool preallocj; // --nopreallocj no preallocation of journal files 56 bool prealloc; // --noprealloc no preallocation of data files 57 bool smallfiles; // --smallfiles allocate smaller data files 58 59 // --journalOptions 7 dump journal and terminate without doing anything further 60 // --journalOptions 4 recover and terminate without listening 61 enum { // bits to be ORed 62 JournalDumpJournal = 1, // dump diagnostics on the journal during recovery 63 JournalScanOnly = 2, // don't do any real work, just scan and dump if dump 64 // specified 65 JournalRecoverOnly = 4, // terminate after recovery step 66 JournalParanoid = 8, // paranoid mode enables extra checks 67 JournalAlwaysCommit = 16, // do a group commit every time the writelock is released 68 JournalAlwaysRemap = 32, // remap the private view after every group commit 69 // (may lag to the next write lock acquisition, 70 // but will do all files then) 71 JournalNoCheckSpace = 64 // don't check that there is enough room for journal files 72 // before startup (for diskfull tests) 73 }; 74 int journalOptions; // --journalOptions <n> for debugging 75 76 // --quota 77 // Enables a maximum limit for the number data files each database can have. 78 // When running with the --quota option, MongoDB has a maximum of 8 data files 79 // per database. Adjust the quota with --quotaFiles. 80 bool quota; 81 82 // --quotaFiles 83 // Modifies the limit on the number of data files per database. 84 // --quotaFiles option requires that you set --quota. 85 int quotaFiles; // --quotaFiles 86 }; 87 88 extern MMAPV1Options mmapv1GlobalOptions; 89 90 } // namespace mongo 91