Buffalo 220 NAS

This document briefly describes how to install NFS on your buffalo device, along with how to get remote root access, via SSH.

There are two systems involved here:

• My desktop system - which will mount the exports.
  • 10.0.0.10
• The NAS device itself.
  • 10.0.0.108

Get Root

To get root on the device you can use the bundled acp_commander.jar command - of course you'll need a Java installation to do that.

Using acp_commander.jar you can execute arbitrary commands on the NAS, as root, you just need to know the IP address of your NAS and the password for the admin user.

Add your details to the nas script, then execute it like so:

./nas uptime
Using random connID value = 6F10567B8986
Using target:	10.0.0.108/10.0.0.108
Starting authentication procedure...
Sending Discover packet...
Found:	LS220DE37E (/10.0.0.108) 	LS220DE(GOICHIJO) (ID=004814) 	mac: 88:57:EE:4A:73:7E	Firmware=  1.650	Key=5E889F5B
Trying to authenticate EnOneCmd...	ACP_STATE_OK
Trying to authenticate with admin password...	ACP_STATE_OK
>uptime
 18:39:10 up 2 days,  5:27,  0 users,  load average: 0.13, 0.14, 0.14

Assuming this works for you then you can now examine the get-root script which will run a couple of commands:

• root.sh
  • Change the root password to ssh.pass.
    • NOTE: This is the password you'll use for SSH, the admin webui login will remain unchanged.
  • Enable SFTP/SSH support.
  • Stop & start the sshd server

Once you have root you can login to your NAS via SSH and run commands interactively, as you'd expect:

deagol ~ $ ssh [email protected]
[email protected]'s password:

REMEMBER: The root.sh script will have set the ssh-password to be ssh.pass.

[root@LS220DE37E ~]# uptime
 15:24:32 up 1 day,  2:12,  1 user,  load average: 0.20, 0.18, 0.70

[root@LS220DE37E ~]# free -m
             total       used       free     shared    buffers     cached
Mem:           242        158         83          0         38         69
-/+ buffers/cache:         51        190
Swap:          975          0        975

[root@LS220DE37E ~]# uname -r
3.3.4

[root@LS220DE37E ~]# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md10 : active raid1 sda6[0] sdb6[1]
  2914744128 blocks super 1.2 [2/2] [UU]
  bitmap: 0/22 pages [0KB], 65536KB chunk
md0 : active raid1 sda1[0] sdb1[1]
  999872 blocks [2/2] [UU]
md1 : active raid1 sda2[0] sdb2[1]
  4995008 blocks super 1.2 [2/2] [UU]
md2 : active raid1 sda5[0] sdb5[1]
  999424 blocks super 1.2 [2/2] [UU]

Install ipkg

Install ipkg like so:

cd /tmp
wget http://ipkg.nslu2-linux.org/feeds/optware/cs05q3armel/cross/stable/lspro-bootstrap_1.2-7_arm.xsh
sh ./lspro-bootstrap_1.2-7_arm.xsh

NOTE: If this site disappears you can look at the archive/ directory in this repository.

The .xsh script will boosttrap the system, by unpackaging a binary-archive embedded within itself, and then executing it.

To view the contents of the archive you can run this:

# dd if=lspro-bootstrap_1.2-7_arm.xsh bs=201 skip=1 2>/dev/null| tar zt
bootstrap/
bootstrap/bootstrap.sh
bootstrap/ipkg-opt.ipk
bootstrap/ipkg.sh
bootstrap/optware-bootstrap.ipk
bootstrap/wget.ipk

NOTE: Use .. | tar xf if you wish to unpack locally and read what will be executed.

Ultimately when ./bootstrap/bootstrap.sh is executed it will install the two bundled .ipkg files (giving ipkg itself, and wget which is used to download packages), and configure ipkg.

Install NFS

Once you have ipkg, the package-manager, installed you can install things via:

# ipkg update
# ipkg install $name

To get the (user-space) NFS-server you'll run:

# ipkg update
# ipkg install nfs-server

To configure your exports you need to edit the configuration file /opt/etc/exports. My example is this:

/mnt/array1/backups 10.0.0.10(rw,sync)
/mnt/array1/films   10.0.0.10(rw,sync)
/mnt/array1/tv      10.0.0.10(rw,sync)

Once that file has been updated you'll need to restart NFS:

/opt/etc/init.d/*nfs* stop
/opt/etc/init.d/*nfs* start

NOTE: We're explicitly installing the user-space NFS server here. My first attempt involved using the kernel-mode NFS server, via a third-party repository. This failed to boot, effectively bricking the device neatly. Recovering from that was a real pain, and something I have no wish to repeat! (You need a third-party kernel because the default kernel contains zero NFS-modules. Also doesn't contain a kernel .config file either.)

Testing NFS

From a local system in your LAN, with IP 10.0.0.10, you should now be able to list those exports:

root@deagol:~# showmount -e 10.0.0.108
Export list for 10.0.0.108:
/mnt/array1/tv      10.0.0.10
/mnt/array1/films   10.0.0.10
/mnt/array1/backups 10.0.0.10

Mounting NFS Shares

This is what I did to mount the shares on my desktop:

mkdir /srv/films
mount  -t nfs -o vers=2 10.0.0.108:/mnt/array1/films /srv/films

mkdir /srv/tv
mount  -t nfs -o vers=2 10.0.0.108:/mnt/array1/tv /srv/tv

mkdir /srv/backups
mount  -t nfs -o vers=2 10.0.0.108:/mnt/array1/backups /srv/backups

All done.