diff options
Diffstat (limited to 'src/libstore/local-store.cc')
| -rw-r--r-- | src/libstore/local-store.cc | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc index 6e8082776dd0..67a91bb49f65 100644 --- a/src/libstore/local-store.cc +++ b/src/libstore/local-store.cc @@ -219,9 +219,13 @@ LocalStore::LocalStore() /* !!! check whether sqlite has been built with foreign key support */ - /* "Normal" synchronous mode should be safe enough. */ - if (sqlite3_exec(db, "pragma synchronous = normal;", 0, 0, 0) != SQLITE_OK) - throw SQLiteError(db, "changing synchronous mode to normal"); + /* Whether SQLite should fsync(). "Normal" synchronous mode + should be safe enough. If the user asks for it, don't sync at + all. This can cause database corruption if the system + crashes. */ + string syncMode = queryBoolSetting("fsync-metadata", true) ? "normal" : "off"; + if (sqlite3_exec(db, ("pragma synchronous = " + syncMode + ";").c_str(), 0, 0, 0) != SQLITE_OK) + throw SQLiteError(db, "setting synchronous mode"); /* Check the current database schema and if necessary do an upgrade. !!! Race condition: several processes could start @@ -243,8 +247,6 @@ LocalStore::LocalStore() "please upgrade Nix to version 0.12 first."); else if (curSchema < 6) upgradeStore6(); else prepareStatements(); - - doFsync = queryBoolSetting("fsync-metadata", false); } |