Synology Disk Station DS-101g+ - What file system is this?

[N.C.]

N.C, Thanks.

I searched for XFS, it's not a XFS. The toos i have would have picked it up (e.g X-Ways).

What would you suggest in order to repair the file system if i'm not sure what it is to begin with?

Ok, it was just a tip.

I think the best methode to tying to repair an unknown fs in linux is cowloop.
You can simulate the write attempts to another file and than you can drop it, or sync it back the the source!
Brilliant tool, for recovery big raids!

"One somewhat unusual item I noticed while exploring the DS-101 flash image was the use of the Reiser filesystem. I had not previously seen this filesystem used in a consumer NAS device, so decided to do some additional exploration. I took the IDE drive out of the DS-101 and hooked it to my Desktop Linux system so that I could explore the filesystem. My first attempt to simply mount one of the partitions failed, with an error indicating that the partition was not in Reiser format!"

This is a wery good sign.

Next, I did a simple ASCII dump of the first section of the partition to see if I was mistaken about the filesystem used. This is where I saw something curious. A standard Linux filesystem will have an ASCII signature present to tell the operating system what kind of filesystem is present. For Reiser, this will normally be "ReIsEr2Fs", but on the DS-101 initialized disk, I saw an "SyNoRs2Fs". Reading between the lines, this indicated to me that perhaps this was a "Synology Reiser2 Filesystem." Had Synology created a custom Reiser2 Filesystem? Or maybe they had just put in a custom signature.

To test this theory (don't try this at home kids!) I bypassed the filesystem by writing directly to the raw hard drive and overwrote the signature with the standard one. After I did this, I was able to mount the filesystem without error and I could see the top-level directories on the disk. But when I tried to examine any of the files, I would get an error indicating that the file didn't exist. This told me that it really was a modified Reiser filesystem, and not just a change in signature."

Did you do that with the patient's drive or the new, empty drive, wich formatted in the NAS box?

If it was the patients drive, you only see the damage of the fs, and possibly you can repair it....

Another tip:
Try the "Captain Nemo" from runtime...

Regards,
Janos

[N.C.]

Ok, now i read the link from tom's hardware, and now laughing.

Sorry.
Anyway, you can try this way...

And looks like there is a way, to extract the flash image....

Good luck

Janos

[thatdellguy]

http://www.synology.com/enu/forum/viewt ... xt3#p12104

It shipped with a modified ReiserFS. A firmware fix updates it to EXT3 for better performance. What firmware do you have on the DS-101G+? Make an image of the drive in question and try a firmware update with the imaged drive in it.

[zed]

hddguy. UFS explorer cannot view the files and when i scan for lost partitions it picks up a SNAPOS volume (about 30 of them actually) but none of they are correct, you cannot see the files/folders which is why i am reluctant to assume it's a SNAP OS or EXT3 when all indicators point to something different.

I too have seen many other NAS boxes, this is the 1st time i have seen this one. Has anybody else seen one of these units? Any experience with it?

[z007]

I think it may be ReiSer2FS ( Modified ReiSer File system)

in 128 Sector patition label : SyNoRs2Fs

if ReiserFS it will be ReiSerFS