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

Thanks for that link Fonz. After reading it I am left with more questions than answers, but either way I am going to give the kernel mode NFS a shot and compare it's benchmarks up against what I got with the user-space NFS.

In a nutshell I am having trouble streaming some higher bitrate videos currently, so I am looking at the NFS code to see if I can squeeze some more throughput out of it. Right now I am seeing about half the 100 Mbps link (and the receiving system doesn't support Gbps LAN).

Thanks again 

You give me too much credit . No, I was not aware of any tuning opportunities with the user-space NFS. Can you point me to any documentation on those options ?

I also tried just enabling the kernel mode NFS and it didn't work, but I also did not load any kernel mode drivers for it (.ko files). I checked on the Modules FTP site but didn't see anything there that seemed to be appropriate for an NFS kernel module. I looked around and could not find any documentation on which module was required.

Thanks again for your responses and in general for all of your hard work to get us to where we are today with all of this (fun plug, general knowledge, etc) 

ok, I added the rsize, wsize, intr and noatime flags to the exports lines. I also used nfsstat to check a few things and this was the output for nfsstat -rc

Client rpc stats:
calls      retrans    authrefrsh
2441347    519        0


From what I read the retrans indicates a need to bump the kernel threads for the NFSD, but since I am still using a user-space NFSD I don't see how that would be an option. So unless I find some new data I guess I am off to figure out how to get the kernel level  NFSD up and running. Any information and/or assistance would be greatly apprecaited 

I did add them to the client side where I could. But at least one of our clients is an appliance, so I am not 100% sure I could set those options or not.

So, is TCP better to use than UDP for tranmission protocol ? (Better == Faster) ? I thought udp was more efficient, just less reliable due to it being "connection-less". Am I working off of mis-information ?

Going to read up on those links you provided (not sure why I didn't find them in my earlier searches ). Thanks again !!

Conceptronic listens to us. D-Link doesn't care about NFS, it seems. That's life, I guess.

the tuning worked out well enough that I don't feel that I need to re-work any of our setup (no new hubs/switches, cables, etc). The one file that was the hardest to stream was a 40 MBps BluRay rip (The Fifth Element Remastered) that I was streaming to our Tvix player. Most of the vids played fine, but there were 2 above 35 MBps that had issues, at least until I finished the tunning excercise . Many thanks Fonz !!!! 

I have Conceptronic firmware on my DNS323. It is no problem to put them on your nas.
Put the images on your harddisk and write them with

cat kernel > /dev/mtdblock2

and

cat ramdisk > /dev/mtdblock3

Do not mix the kernel images with other ramdisk images. If your flash is not successfull
you will need a serial port on your nas to recover it.

You can get the splited images here : http://rapidshare.de/files/39498123/dns … r.bz2.html

Just in case someone finds this old thread in the same way I did while researching kernel NFS on the DNS-323, thought I'd post an update on what I did with the suggestions outlined here...

I took the plunge and updated my DNS-323 firmware with Conceptronic's v1.03 (rapidshare link above). Then grabbed the latest release from Conceptronic's web site (v1.04RC5 upgrade):

http://download.conceptronic.net/GrabnGo/CH3SNAS/

You need to use the split images (kernel/ramdisk) initially to get the CH3SNAS firmware deployed before you can make use of the later updates (via browser-based admin console).

With that done, funplug 0.5 can be installed and kernel NFS activated (was running 0.4 previously). Everything worked a treat!

After weeks of dicking around with this and troubleshooting the compatibility issues between unfs and VMware ESX I can now say that I am completely satisfied with the setup.

I hope this serves to allay anyone's concerns about the whole process.

I see that puterboy's questions went unanswered. I have essentially the same questions, especially question number 1 on his list. 

I've downloaded the rapidshare file and I used winrar on my pc to unpack it. It contains 4 files:

ramdisk_dlink_v1.03
ramdisk_conceptronic_v1.03
kernel_dlink_v1.03
kernel_conceptronic_v1.03

Do I ftp the unpacked Conceptronic files (kernel_conceptronic_v1.03 and ramdisk_conceptronic_v1.03) to the root of the DNS-323?

Do I then telnet in and enter supamicha's commands, but modified to read:

cat kernel_conceptronic_v1.03 > /dev/mtdblock2
cat ramdisk_conceptronic_v1.03 > /dev/mtdblock3

and then power down and restart the DNS-323?

Or is the above not right? I'm a linux newbie so I don't want to try this if I'm going to brick my DNS-323. The serial connection unbricking instructions look like far more than I'd care to take on. I imagine there are others besides puterboy and myself who could use a little more direction in getting the Conceptronic firmware installed so that we can benefit from the kernel-level NFS.

If anybody could jump in with some help, I'd be grateful.

I just flashed my DNS-323 with the method described above.  I have revision B1.  I rebooted from the prompt after performing the above commands.

borntochill, rek075 says that he did cat commands just as you described. Unfortunately he tried to later upgrade his firmware through the web interface and bricked his 323.

Now I've inherited it to try to bring it back to life.....