DSM-G600, DNS-3xx and NSA-220 Hack Forum

Since my unit seems to be running more stable now with ext2 and a new samba here are the instructions how to change the filesystem.

A word of warning ahead: You will lose all the data on the ntfs partition, the itunes and upnp av media libraries. You will probably also need to install a new version of samba because the installed one seems to be causing errors. I don't know if your itunes library or the default upnp av server will still work as i am not using any of them.
MAKE A BACKUP before you start ! VERIFY your backup before you start !

As i am doing these instructions from memory, i may miss some parts so please forgive me if it's not 100% accurate.

Instructions:

Backup your data (you can't say this often enough)
Telnet into the dns-313 using user root
If you already have a fun_plug script copy it to somewhere outside of the dns 313
Execute the command

fdisk /dev/sda

( Notice: The default fdisk command core dumps on my dns 313 with a segmentation fault, in this case download an arm version of fdisk from e.g. http://packages.debian.org/etch/fdisk-udeb, unpack it with a debian package installer tool and transfer it to the dns 313)
Print the partition table with p<RETURN>
Delete partition /dev/sda2 by pressing d<RETURN> and choosing the right number (should be 2)
Delete partition /dev/sda4 by pressing d<RETURN> and choosing the right number (should be 4)
Add a new primary partion by pressing n<RETURN>, choose primary (p) and number 2
Use the default cylindeer and give it a size of at least 200M with +200M (this will be your ntfs partition, so if you want to use the dns 313 as a usb device give it enough space for data copied over usb) but leave enough space for the main partition
Add a new primary partion by pressing n<RETURN>, choose primary (p) and number 4
Use the default cylinder and use the rest of the available space
Change the partition type of partition 2 to type 7 (ntfs) by pressing t<RETURN>2<RETURN>7<RETURN>
Press w to save your changes.
It will tell you that the changes are available on next boot since the devices are in use.
Example

Command (m for help): d
Partition number (1-4): 2

Command (m for help): d
Partition number (1-4): 4

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (1911-60301, default 1911):
Using default value 1911
Last cylinder or +size or +sizeM or +sizeK (1911-60301, default 60301): +200M
Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 4
First cylinder (5801-60301, default 5801):
Using default value 5801
Last cylinder or +size or +sizeM or +sizeK (5801-60301, default 60301):60301
Command (m for help): t
Partition number (1-4): 2
Hex code (type L to list codes): 7
Changed system type of partition 2 to 7 (HPFS/NTFS)
w

Shutdown your dns 313 now and connect it by usb to your windows pc. Enter the computer manager (naming?)  and choose volume manager, format partition 2 on the dns 313 with ntfs.
Mount the newly formatted partition to a windows drive letter
Create two files on the partition (pay attention that these are unix files, so don't use notepad or wordpad for this !!!):
First one named
fun_plug
containing

#!/bin/sh
#
# Simple fun_plug
#
#dmesg > /mnt/HD_a2/dmesg.out
cp /mnt/HD_a2/remount_disks.sh /
/remount_disks.sh &

second one named
remount_disks.sh
containing:

#!/bin/sh
while ( [ ! -f /tmp/boot_finished ] )
do
        sleep 5
done

sleep 5

kill `pidof smbd`
kill `pidof nmbd`

umount /dev/sda2
umount /dev/sda4

mount -t ext2 /dev/sda4 /mnt/HD_a2
mount -t ufsd /dev/sda2 /mnt/HD_a4
# make sure we can telnet into the device 
xinetd -stayalive -reuse -pidfile /var/run/xinetd.pid&
#this is the real fun plug now
/mnt/HD_a2/initialize_environment.sh
smbd -D
nmbd -D

-- Note to MAC Users:

There is an alternative path if you don't have a windows installation, but this is entirely untested by me.
Before starting fdisk execute the following commands (taken from /usr/sbin/fmt_user_partitions.sh)

for proname in crond atd smbd nmbd fancontrol op_server ubutton HDFullCheck \
mailalert pure-ftpd mt-daapd upnp; do
echo "to kill $proname"
kill -9 `pidof $proname`
done


umount /mnt/HD_a2
umount /mnt/HD_a4

execute the fdisk command as the instructions say above
then execute the following two commands:

mkntfs -f -L USER_DATA /dev/sda2
mke2fs -L DATA_BASE /dev/sda4

Execute mount -t ufsd /dev/sda2 /mnt/HD_a2
Create the two files fun_plug and remount_disks.sh as mentioned above on /mnt/HD_a2, then reboot your device.
-- Note to MAC Users end

Disconnect your drive from usb and reconnect it to the lan, then power up your device. This will take some time, because the main partition will be formatted automatically now, so don't be afraid if your device is not reachable for a few minutes ( i certainly was )

Telnet into your dns 313 again and check if /mnt/HD_a2 is now a ext2 partition by executing the command:
mount
It should output something like that

rootfs on / type rootfs (rw)
/dev/root on / type ext2 (rw,nogrpid)
/proc on /proc type proc (rw,nodiratime)
none on /dev/pts type devpts (rw)
tmpfs on /var/spool type tmpfs (rw)
/dev/sda4 on /mnt/HD_a2 type ext2 (rw,nogrpid)
/dev/sda2 on /mnt/HD_a4 type ufsd (rw)

The big ext2 partition is now mounted on HD_a2, the previous ntfs partition on HD_a4

If you previously had a fun_plug script, then copy it onto the dns-313 to /mnt/HD_a2/initialize_environment.sh to have it executed by the remount procedure.

That's all, so now check if your samba is making any problems by doing some large file transfers to the dns 313 (at least 500 MB data).
Keep a telnet connection open while you transfer the files. It may be possible that the telnet connection suddenly closes and you cannot connect to the dns 313 with the web interface, nor does it react on the power button.
In that case reopen a telnet connection and execute the following commands

/web/webs &
fancontrol &
ubutton&
/usr/sbin/HDFullCheck&
/usr/sbin/mailalert&
/usr/sbin/SyncMms&

This should restore your unit to the normal state, but better reboot it afterwards.

If you have this problem you need to install Samba 3.0.28a on your device, at least that solved the problem for me.

Good luck if you try this