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

roddersg · 2008-02-24 05:48:15

Firmware: 1.04, funplug0.3, 2xSamsung500Gb (separate disks)

Background:
DNS-323 working with funplug 0.3, firmware 1.03, 1xSamsung 500Gb inserted in left-bay
Changed:
Firmware 1.04, added 2nd Samsung 500Gb on right-bay (as separate HD)
Problem:
Funplug does not start

Solution:
Remove original HD from left-bay and insert into right-bay
New 2nd HD into left-bay
Re-boot

Notes:
the hard disks are now named as follows after the switch
Right-bay - Volume_2 /mnt/HD_a2 (old name was Volume_1)
Left-bay - Volume_1 /mnt/HD_b2

apparently, if you insert the new hard-disk into the right bay, the bios expects fun_plug to be there in Volume_2 instead of Volume_1.

I now have 4 partitions on the 2 drives: /mnt/HD_a2, HD_a4, HD_b2, HD_b4
when I remove the drives and inspect them on a Linux system, I find that HD_a4 and HD_b4 are actually Swap partitions.

Anyone care to expand this before I put it into the wiki?

mig · 2008-02-24 08:35:50

roddersg wrote:
apparently, if you insert the new hard-disk into the right bay, the bios expects fun_plug to be there in Volume_2 instead of Volume_1.

This is not quite correct. Volume_1 and Volume_2 are the SMB share names created in the Samba config file (smb.conf).

The DNS-323 start-up scripts http://dns323.kood.org/howto:fun_plug do not reference the filesystem with SMB share names.

The script which checks for the presence of a "fun_plug" script is called /usr/sbin/chk_fun_plug

Code:

 
#!/bin/sh

sleep 30

Dir_Len=28
Filename_Len=26
CUSTOMIZEHDPATH=/sys/custom/shared_name/HD

file=$(find "$CUSTOMIZEHDPATH"/*)
HD_Path=`expr substr "$file" "$Dir_Len" "$Filename_Len"`
HD_Path=$HD_Path"a2"

if [ -e /mnt/$HD_Path/fun_plug ]; then
      echo "function plug enable"
      /mnt/$HD_Path/fun_plug
fi

The shell variable HD_path (on my system) is evaluated to 'HD_a2' before the "if" statement, so
this script tests for an executable file '/mnt/HD_a2/fun_plug' and executes this file, if the
test statement is evaluated true.

Last edited by mig (2008-02-24 08:37:02)

roddersg · 2008-02-24 09:00:19

Ok, I would accept that Volume_1 and Volume_2 are smb names.

But how come, the same drives when swapped, i.e. cannot make fun_plug run. hence, there must be some sequencing as the names of the HDs in the locations.

I would concur that if you have one HD, it would be named HD_a2
If you have 2 HD, then the one on the right bay is named HD_a2, and you must place funplug there.

In my case, if that drive is in the left bay, a fun_plug in the right bay starts first.

mig · 2008-02-24 11:21:31

In linux, the hard drives are assigned device names based on the order they are
detected on the hard drive controllers.

For the DNS-323 the hard drive controllers are labeled on the circuit board in the photo
http://dns323.kood.org/_detail/11.jpg?i … ache=cache as HDD0 and HDD1

In a single hard drive configuration, regardless if the drive is attached to HDD0 or HDD1,
the single hard drive will be detected and assigned the device name /dev/sda. The D-Link
scripts will mount the second partition on the /dev/sda drive to /mnt/HD_a2.

In a dual hard drive configuration, the hard drive attached to the HDD0 controller will be detected and
assigned the device namd /dev/sda. The hard drive attached to the HDD1 controller will be detected and
assigned the device name /dev/sdb. The D-Link scripts will mount the second partition on the /dev/sda
drive to /mnt/HD_a2 and the second partion on the /dev/sdb drive to /mnt/HD_b2

In either case, the /usr/sbin/chk_fun_plug will look for an executable file named 'fun_plug' in the /mnt/HD_a2 directory.

Last edited by mig (2008-02-28 20:06:51)

roddersg · 2008-02-24 17:05:05

Thanks mig, for the information.
This really confirms that the right drive is HD0, hence it will be the boot drive.

I'll write this up in the wiki.

stevo · 2009-03-22 01:48:48

thanks for the explanation too.. pity I didn't find this post before I added my second drive.

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

Announcement

#1 2008-02-24 05:48:15

funplug not working after inserting 2nd hard disk (Solution)

#2 2008-02-24 08:35:50

Re: funplug not working after inserting 2nd hard disk (Solution)

roddersg wrote:

Code:

#3 2008-02-24 09:00:19

Re: funplug not working after inserting 2nd hard disk (Solution)

#4 2008-02-24 11:21:31

Re: funplug not working after inserting 2nd hard disk (Solution)

#5 2008-02-24 17:05:05

Re: funplug not working after inserting 2nd hard disk (Solution)

#6 2009-03-22 01:48:48

Re: funplug not working after inserting 2nd hard disk (Solution)

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