nosync

nosync is a small preload library that can be used to disable synchronization of file's content with storage devices on GNU/Linux. It works by overriding implementations of certain standard functions like fsync or open.

nosync is free software. You can redistribute and/or modify it under the terms of Apache License Version 2.0.

The author of nosync is Mikolaj Izdebski.

Installation

make install prefix=/target/location

Usage

LD_PRELOAD=/target/location/lib/nosync/nosync.so command

Implementation

nosync works by overloading the following functions:

• fdatasync,
• fsync,
• msync,
• open,
• open64,
• sync,
• sync_file_range.