SVN 服务器开机启动

我正在配置 Subversion 并希望它在启动时启动。使用以下命令系列：

sudo mkdir /var/svn
sudo useradd -r -s /bin/false svn
sudo mkdir /etc/svn
sudo cp /home/zipo/svnserve /etc/svn/svnserve
sudo chown root:root /etc/svn/svnserve
set execute to owner/group/other
sudo nano /lib/systemd/system/svn.service
sudo systemctl daemon-reload
sudo systemctl enable svn
sudo systemctl start svn

当我在 syslog 中键入手动命令以启动服务sudo systemctl start svn时，会出现以下日志条目：

    Oct 29 10:13:27 testserver systemd[1]: Started SVN server.
    Oct 29 10:13:27 testserver svnserve[3128]:  * Starting svnserve...
    Oct 29 10:13:27 testserver svnserve[3128]:    ...done.

但服务不起作用。我在正确的端口 9999 上检查它，如配置中所述。如果我使用以下命令手动运行它，它会启动并正常工作：sudo -H -u svn bash -c '/etc/svn/svnserve start'

我错过了什么？

svn.service 文件内容：

    [Unit]
    Description=SVN server
    After=network.target

    [Service]
    User=svn
    Group=svn
    Type=simple
    ExecStart=/etc/svn/svnserve start
    GuessMainPID=no

    [Install]
    WantedBy=multi-user.target

svnserve 文件内容：

    #! /bin/sh -e
    #
    # svnserve - brings up the svn server so anonymous users
    # can access svn
    #

    # Get LSB functions
    . /lib/lsb/init-functions
    . /etc/default/rcS

    SVNSERVE=/usr/bin/svnserve
    SVN_USER=svn
    SVN_GROUP=svn
    SVN_REPO_PATH=/var/svn/

    # Check that the package is still installed
    [ -x $SVNSERVE ] || exit 0;

    case "$1" in
            start)
                    log_begin_msg "Starting svnserve..."
                    umask 002
                    if start-stop-daemon --start \
                    --chuid $SVN_USER:$SVN_GROUP \
                    --exec $SVNSERVE \
                    -- -d --listen-port=9999 -r $SVN_REPO_PATH; then
                            log_end_msg 0
                    else
                            log_end_msg $?
                    fi
            ;;

            stop)
                    log_begin_msg "Stopping svnserve..."
                    if start-stop-daemon --stop --exec $SVNSERVE; then
                    log_end_msg 0
                    else
                    log_end_msg $?
                    fi
            ;;

            restart|force-reload)
                    "$0" stop && "$0" start
            ;;

            *)
            echo "Usage: /etc/init.d/svnserve {start|stop|restart|force-reload}"
                    exit 1
            ;;
    esac

    exit 0