backup.py 文件源码

def copy(src, dest, dryrun=False, debug=False):
        """
        Copy file/directory using `rsync` with metadata preserved, and to
        keep directory contents in sync.

        Use `rsync --version` to check the available capabilities.
        """
        if os.path.isdir(src):
            src = src.rstrip("/") + "/"
            dest = dest.rstrip("/") + "/"
        logger.info("Copy & sync: %s -> %s" % (src, dest))
        args = ["--archive", "--hard-links", "--numeric-ids",
                "--delete", "--delete-after"]
        if os.uname().sysname == "Linux":
            args += ["--acls", "--xattrs"]
        if debug:
            args += ["--verbose"]
        cmd = ["rsync"] + args + [src, dest]
        if not dryrun:
            subprocess.check_call(cmd)