无意中发现Tomato Pandora已经支持belkin 7231-4P了，立马下载来试用一下尝尝鲜

看了一下，有3G版和VPN版两种，VPN版本不支持USB设备，并且精简了ssh，于是改刷3G版本，虽然偶不需要使用3G USB网卡，哈哈。

刷完看下界面，果然增加了许多东西，不错不错，不过偶最关注的还是USB和NAS。

迫不及待插上U盘试下，很顺利地识别并挂载了！

OK,偶来给路由器安装ipkg环境：

1. 把U盘mount到jffs：mount /dev/sda1 /jffs
2. 建立opt文件夹：mkdir /jffs/opt
3. 将/jffs/opt挂载到/opt：mount -o bind /jffs/opt /opt
4. 然后运行mkswap将刚刚建立的swapfile文件设置成swap文件：mkswap /jffs/Swapfile

然后就悲剧了，提示没有这个指令，估计作者把mkswap给精简掉了，偶先装optware环境吧。

比较懒，找了个自动安装脚本(http://pandoric.googlecode.com/svn/Pandora%20%e8%84%b1%e6%9c%ba%e8%bd%af%e4%bb%b6/optware-install.sh
)，一键安装多快好省，哈哈

开始运行这个脚本：root@Belkin 7231-4P:/jffs# ./optware-install.sh
Checking system config …
Using 192.168.1.1 as default gateway.
Using the following nameserver(s):
nameserver 210.22.70.225
nameserver 210.22.70.3
Warning: local nameserver is different than gateway!
Check config or enter:
  sed -i s/192.168.*/192.168.1.1/ /tmp/resolv.conf
to correct this.

啊哈，居然提示我网关和DNS server的地址不一样！DNS难道非得和网关一样才能解析么？这叫什么逻辑哟!
打开这个脚本看下，删除了检测DNS的步骤，继续安装，成功！

嗯，很好很强大，这个脚本直接设置好了环境变量，直接ipkg安装就可以啦！安装busybox以便等下使用mkswap工具初始化swap

 root@Belkin 7231-4P:/jffs# ipkg install busybox
Installing busybox (1.10.3-1) to /opt/…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/busybox_1.10.3-1_mipsel.ipk

Installing busybox-base (1.10.3-1) to /opt/…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/busybox-base_1.10.3-1_mipsel.ipk

Installing busybox-links (1.10.3-1) to /opt/…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/busybox-links_1.10.3-1_mipsel.ipk

Configuring busybox
Configuring busybox-base
Configuring busybox-links
update-alternatives: Linking //opt/bin/[ to /opt/bin/busybox
update-alternatives: Linking //opt/bin/[[ to /opt/bin/busybox
update-alternatives: Linking //opt/bin/arping to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ash to /opt/bin/busybox
update-alternatives: Linking //opt/bin/awk to /opt/bin/busybox
update-alternatives: Linking //opt/bin/basename to /opt/bin/busybox
update-alternatives: Linking //opt/bin/bunzip2 to /opt/bin/busybox
update-alternatives: Linking //opt/bin/bzcat to /opt/bin/busybox
update-alternatives: Linking //opt/bin/bzip2 to /opt/bin/busybox
update-alternatives: Linking //opt/bin/cal to /opt/bin/busybox
update-alternatives: Linking //opt/bin/cat to /opt/bin/busybox
update-alternatives: Linking //opt/bin/chattr to /opt/bin/busybox
update-alternatives: Linking //opt/bin/chgrp to /opt/bin/busybox
update-alternatives: Linking //opt/bin/chmod to /opt/bin/busybox
update-alternatives: Linking //opt/bin/chown to /opt/bin/busybox
update-alternatives: Linking //opt/bin/chroot to /opt/bin/busybox
update-alternatives: Linking //opt/bin/chrt to /opt/bin/busybox
update-alternatives: Linking //opt/bin/chvt to /opt/bin/busybox
update-alternatives: Linking //opt/bin/cksum to /opt/bin/busybox
update-alternatives: Linking //opt/bin/clear to /opt/bin/busybox
update-alternatives: Linking //opt/bin/cmp to /opt/bin/busybox
update-alternatives: Linking //opt/bin/comm to /opt/bin/busybox
update-alternatives: Linking //opt/bin/cp to /opt/bin/busybox
update-alternatives: Linking //opt/bin/cpio to /opt/bin/busybox
update-alternatives: Linking //opt/bin/cut to /opt/bin/busybox
update-alternatives: Linking //opt/bin/date to /opt/bin/busybox
update-alternatives: Linking //opt/bin/dd to /opt/bin/busybox
update-alternatives: Linking //opt/bin/deallocvt to /opt/bin/busybox
update-alternatives: Linking //opt/bin/df to /opt/bin/busybox
update-alternatives: Linking //opt/bin/diff to /opt/bin/busybox
update-alternatives: Linking //opt/bin/dirname to /opt/bin/busybox
update-alternatives: Linking //opt/bin/dmesg to /opt/bin/busybox
update-alternatives: Linking //opt/bin/dos2unix to /opt/bin/busybox
update-alternatives: Linking //opt/bin/du to /opt/bin/busybox
update-alternatives: Linking //opt/bin/echo to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ed to /opt/bin/busybox
update-alternatives: Linking //opt/bin/egrep to /opt/bin/busybox
update-alternatives: Linking //opt/bin/eject to /opt/bin/busybox
update-alternatives: Linking //opt/bin/env to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ether-wake to /opt/bin/busybox
update-alternatives: Linking //opt/bin/expr to /opt/bin/busybox
update-alternatives: Linking //opt/bin/false to /opt/bin/busybox
update-alternatives: Linking //opt/bin/fgrep to /opt/bin/busybox
update-alternatives: Linking //opt/bin/find to /opt/bin/busybox
update-alternatives: Linking //opt/bin/free to /opt/bin/busybox
update-alternatives: Linking //opt/bin/grep to /opt/bin/busybox
update-alternatives: Linking //opt/bin/gunzip to /opt/bin/busybox
update-alternatives: Linking //opt/bin/gzip to /opt/bin/busybox
update-alternatives: Linking //opt/bin/head to /opt/bin/busybox
update-alternatives: Linking //opt/bin/hexdump to /opt/bin/busybox
update-alternatives: Linking //opt/bin/hostname to /opt/bin/busybox
update-alternatives: Linking //opt/bin/id to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ifconfig to /opt/bin/busybox
update-alternatives: Linking //opt/bin/install to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ip to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ipcrm to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ipcs to /opt/bin/busybox
update-alternatives: Linking //opt/bin/kill to /opt/bin/busybox
update-alternatives: Linking //opt/bin/killall to /opt/bin/busybox
update-alternatives: Linking //opt/bin/killall5 to /opt/bin/busybox
update-alternatives: Linking //opt/bin/less to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ln to /opt/bin/busybox
update-alternatives: Linking //opt/bin/logger to /opt/bin/busybox
update-alternatives: Linking //opt/bin/logname to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ls to /opt/bin/busybox
update-alternatives: Linking //opt/bin/lsattr to /opt/bin/busybox
update-alternatives: Linking //opt/bin/md5sum to /opt/bin/busybox
update-alternatives: Linking //opt/bin/mkdir to /opt/bin/busybox
update-alternatives: Linking //opt/bin/mkfifo to /opt/bin/busybox
update-alternatives: Linking //opt/bin/mknod to /opt/bin/busybox
update-alternatives: Linking //opt/bin/mount to /opt/bin/busybox
update-alternatives: Linking //opt/bin/mv to /opt/bin/busybox
update-alternatives: Linking //opt/bin/nc to /opt/bin/busybox
update-alternatives: Linking //opt/bin/netstat to /opt/bin/busybox
update-alternatives: Linking //opt/bin/nice to /opt/bin/busybox
update-alternatives: Linking //opt/bin/nmeter to /opt/bin/busybox
update-alternatives: Linking //opt/bin/nohup to /opt/bin/busybox
update-alternatives: Linking //opt/bin/od to /opt/bin/busybox
update-alternatives: Linking //opt/bin/openvt to /opt/bin/busybox
update-alternatives: Linking //opt/bin/patch to /opt/bin/busybox
update-alternatives: Linking //opt/bin/pidof to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ping to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ping6 to /opt/bin/busybox
update-alternatives: Linking //opt/bin/printf to /opt/bin/busybox
update-alternatives: Linking //opt/bin/ps to /opt/bin/busybox
update-alternatives: Linking //opt/bin/pwd to /opt/bin/busybox
update-alternatives: Linking //opt/bin/readlink to /opt/bin/busybox
update-alternatives: Linking //opt/bin/realpath to /opt/bin/busybox
update-alternatives: Linking //opt/bin/renice to /opt/bin/busybox
update-alternatives: Linking //opt/bin/reset to /opt/bin/busybox
update-alternatives: Linking //opt/bin/resize to /opt/bin/busybox
update-alternatives: Linking //opt/bin/rm to /opt/bin/busybox
update-alternatives: Linking //opt/bin/rmdir to /opt/bin/busybox
update-alternatives: Linking //opt/bin/script to /opt/bin/busybox
update-alternatives: Linking //opt/bin/sed to /opt/bin/busybox
update-alternatives: Linking //opt/bin/seq to /opt/bin/busybox
update-alternatives: Linking //opt/bin/sh to /opt/bin/busybox
update-alternatives: Linking //opt/bin/sha1sum to /opt/bin/busybox
update-alternatives: Linking //opt/bin/sleep to /opt/bin/busybox
update-alternatives: Linking //opt/bin/sort to /opt/bin/busybox
update-alternatives: Linking //opt/bin/stat to /opt/bin/busybox
update-alternatives: Linking //opt/bin/strings to /opt/bin/busybox
update-alternatives: Linking //opt/bin/stty to /opt/bin/busybox
update-alternatives: Linking //opt/bin/sync to /opt/bin/busybox
update-alternatives: Linking //opt/bin/tail to /opt/bin/busybox
update-alternatives: Linking //opt/bin/tar to /opt/bin/busybox
update-alternatives: Linking //opt/bin/tee to /opt/bin/busybox
update-alternatives: Linking //opt/bin/test to /opt/bin/busybox
update-alternatives: Linking //opt/bin/time to /opt/bin/busybox
update-alternatives: Linking //opt/bin/top to /opt/bin/busybox
update-alternatives: Linking //opt/bin/touch to /opt/bin/busybox
update-alternatives: Linking //opt/bin/tr to /opt/bin/busybox
update-alternatives: Linking //opt/bin/true to /opt/bin/busybox
update-alternatives: Linking //opt/bin/tty to /opt/bin/busybox
update-alternatives: Linking //opt/bin/umount to /opt/bin/busybox
update-alternatives: Linking //opt/bin/uname to /opt/bin/busybox
update-alternatives: Linking //opt/bin/uncompress to /opt/bin/busybox
update-alternatives: Linking //opt/bin/uniq to /opt/bin/busybox
update-alternatives: Linking //opt/bin/unix2dos to /opt/bin/busybox
update-alternatives: Linking //opt/bin/unzip to /opt/bin/busybox
update-alternatives: Linking //opt/bin/uptime to /opt/bin/busybox
update-alternatives: Linking //opt/bin/usleep to /opt/bin/busybox
update-alternatives: Linking //opt/bin/uudecode to /opt/bin/busybox
update-alternatives: Linking //opt/bin/uuencode to /opt/bin/busybox
update-alternatives: Linking //opt/bin/vi to /opt/bin/busybox
update-alternatives: Linking //opt/bin/watch to /opt/bin/busybox
update-alternatives: Linking //opt/bin/wc to /opt/bin/busybox
update-alternatives: Linking //opt/bin/which to /opt/bin/busybox
update-alternatives: Linking //opt/bin/who to /opt/bin/busybox
update-alternatives: Linking //opt/bin/whoami to /opt/bin/busybox
update-alternatives: Linking //opt/bin/xargs to /opt/bin/busybox
update-alternatives: Linking //opt/bin/yes to /opt/bin/busybox
update-alternatives: Linking //opt/bin/zcat to /opt/bin/busybox
update-alternatives: Linking //opt/libexec/syslogd to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/arp to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/fdisk to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/fsck to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/hdparm to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/httpd to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/hwclock to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/insmod to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/klogd to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/losetup to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/lsmod to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/mkswap to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/modprobe to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/pivot_root to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/rdate to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/rmmod to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/route to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/start-stop-daemon to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/swapoff to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/swapon to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/sysctl to /opt/bin/busybox
Successfully terminated.
root@Belkin 7231-4P:/jffs# mkswap
BusyBox v1.10.3 (2010-05-21 00:45:35 UTC) multi-call binary

Usage: mkswap DEVICE

Prepare block device to be used as swap partition

root@Belkin 7231-4P:/jffs# mkswap /jffs/Swapfile
Setting up swapspace version 1, size = 67104768 bytes

root@Belkin 7231-4P:/jffs# swapon /jffs/Swapfile
root@Belkin 7231-4P:/jffs# free
              total         used         free       shared      buffers
  Mem:        62040        49472        12568            0         1892
 Swap:        64748            0        64748
Total:       126788        49472        77316

嗯，成功初始化swap并挂载它。

顺便把这些开机需要执行的指令丢到启动脚本里面去。

 重启路由器，发现并没有自动挂载，大惑，dmesg看了下启动过程，发现系统启动到初始化USB storage设备大概需要6秒左右的时间，好吧，那就让它先sleep 10 ，这样应该就可以啦。

嗯，重启路由器之后自动按照脚本挂载USB设备到jffs并成功加载swap！

贴一下偶的开机脚本和修改后的一键安装包。

sleep 10
mount /dev/sda1 /jffs
mount -o bind /jffs/opt /opt
sleep 3
swapon /jffs/Swapfile

ipkg环境的一键安装包：optware-install.rar