backup.py 文件源码

def set_open_files_limit():
    """Detect maximum supported number of open file and set it"""
    max_files = getrlimit(RLIMIT_NOFILE)[0]
    while True:
        try:
            setrlimit(RLIMIT_NOFILE, (max_files, max_files))
            max_files += 1
        except ValueError:
            break
    LOG.debug('Setting max files limit to %d', max_files)