Doorgaan naar hoofdcontent

Broken RAID-1 Qnap TS 201 (how I got the data)

A few days someone gave me a TS 201 RAID NAS made by Qnap to fix.

It was very bad, the power light did not come on, it just pulsed a bit.
The external power supply was broken, the capacitors 16V/1000uF swollen up.
12 Volt 5 Amps standard PSU, I had a spare so that was easily fixed.
Trouble was not over, the device did not work. It beeped, lights were blinking, ugly noise from disk.
Connecting to NAS did not go easily, I found the IP address by using NMAP (I assumed it was using DHCP)

$ nmap -sP
.. some known machines..

Nmap scan report for
Host is up (0.00034s latency).

Connect to the thing using a web browser did not work.
type in : click 'administration'
That redirected to a webserver on port 6000 why?
New rules in Chrome and Firefox, blocking ports including 6000.

I got something like this very descriptive message : 
Error 312 (net::ERR_UNSAFE_PORT): Unknown error.

So I had to start chrome with some extra flag to get it working:
$ google-chrome --explicitly-allowed-ports=6000

I could see the disks off-line and log in, the mainboard seems to work.

I took out the hard disks, two Hitachi Deskstars of 320 GB and hooked them to my USB Sata converter.
One of the drives did not even make it, went into the trash.
The other spun up like expected.
Would I still be able to recover data? What is on this disk?

This was in my kernel log (dmesg)
[489397.065416] usb 1-4: new high-speed USB device number 18 using ehci-pci
[489403.457631] usb 1-4: New USB device found, idVendor=174c, idProduct=5106
[489403.457641] usb 1-4: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[489403.457647] usb 1-4: Product: AS2105
[489403.457652] usb 1-4: Manufacturer: ASMedia
[489403.457656] usb 1-4: SerialNumber:       VFD200R22BAKLC
[489403.458269] scsi20 : usb-storage 1-4:1.0
[489404.459130] scsi 20:0:0:0: Direct-Access     Hitachi  HDT725032VLA360  V54O PQ: 0 ANSI: 5
[489404.460233] sd 20:0:0:0: Attached scsi generic sg8 type 0
[489404.461542] sd 20:0:0:0: [sdh] 625142448 512-byte logical blocks: (320 GB/298 GiB)
[489404.464852] sd 20:0:0:0: [sdh] Write Protect is off
[489404.464859] sd 20:0:0:0: [sdh] Mode Sense: 23 00 00 00
[489404.466835] sd 20:0:0:0: [sdh] No Caching mode page found
[489404.466841] sd 20:0:0:0: [sdh] Assuming drive cache: write through
[489404.471831] sd 20:0:0:0: [sdh] No Caching mode page found
[489404.471842] sd 20:0:0:0: [sdh] Assuming drive cache: write through
[489404.498322]  sdh: sdh1 sdh2 sdh3 sdh4
[489404.504822] sd 20:0:0:0: [sdh] No Caching mode page found
[489404.504835] sd 20:0:0:0: [sdh] Assuming drive cache: write through
[489404.504842] sd 20:0:0:0: [sdh] Attached SCSI disk

Let's see what Linux thinks of the partition table:

sudo fdisk /dev/sdh

Command (m for help): p

Disk /dev/sdh: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdh1   *          63     1060289      530113+  83  Linux
/dev/sdh2         1060290     2120579      530145   82  Linux swap / Solaris
/dev/sdh3         2120580   624960629   311420025   83  Linux
/dev/sdh4       624960630   625121279       80325   83  Linux

That is not bad, a linux formatted disk, it could be worse :-)

Let's mount it :
sudo mount /dev/sdh3 /mnt2
mount: unknown filesystem type 'linux_raid_member'

Too bad, not working....all data lost?

What now, lets see if it is a normal file system anyway, specify a file system type :
sudo mount /dev/sdh3 /mnt2 -t ext3

That worked, I could get the data from the disk.
I inserted two new disks WD Red 1 TB Hard Drive for NAS (WD10EFRX)

Now to put the stuff back onto the newly formatted (RAID 1) disk.
I created a user and share with the web interface of the Qnap TS-201. (default user/password is administrator/admin, this can be reset by pressing a reset button for 5 seconds)

I need to mount the new share under my linux console to copy the stuff back.
# mkdir /tmp/mymount
# sudo mount -t cifs // /tmp/mymount -ouser=shareuser,password=sharepassword,domain=WORKGROUP,sec=ntlm

do not forget the sec=ntlm or you will get a message like this :

mount error(5): Input/output error
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Now this all worked I updated the firmware before loading the data onto the NAS again.
The latest firmware fixed the port 6000 problem, the admin interface moved to 8080.

I hope someone else can be helped by this information.
Have a good day.


Unknown zei…
Wow, thanks! I needed this info. :-)

Populaire posts van deze blog

Denon DHT T100 DESIGNED TO FAIL : bad caps (ceramic caps this time)

A friend gave me a Denon DHT-T100 to look at. Do not spend much time on it.. ok. It had a problem, it started clicking and ticking after power on, and after some time. (a so called intermittent problem) Sometimes it did not tick or click, but it was basically not usable. The clicking had a sharp click in one channel and repeated after about a second, then sound recovered and it would click and drop out again. He told me, do not spend any time on it, yeah, right. ;-) like I would give up after 15 minutes. I wanted to know what was going on with this thing, I found some schematic online and started measuring the usual things. The power supply, 24V did it drop down when a tick occurred ? Difficult to find out because sometimes the thing would play for hours without a glitch. I eventually found out the 24 V PSU, the step down SMPS on board and the LDO's were all ok, all power rails remained within spec, but it still glitched sometimes. (while power was ok) I investigat

Fixed voltage on cheap buck converter (MP1584) conversion with single 0805 resistor

Everywhere I look on the Ali and Ebays I see these step down converters based on MP1584. I bought a couple and actually they are not bad at all. The output voltage is set by the trimming-resistor in the left top corner of the picture. This works OK, but.. it is dangerous because it is rather sensitive to the touch. I decided that I wanted fixed output, so I had to figure out how this thing worked. The datasheet looks like this : R1 in the datasheet is what I call "R feedback" in my image. The value of R2 is mostly 8.2K Ohm in the boards I have seen.  So to set some common values for output voltage: change R1 to 27K for 3V3 output (actually 3.4 volt, but 27K is a standard value) or change R1 to 43K0 for 5.0 Volt output. (43 K is a standard value) A standard 0805 size resistor fits precisely, how convenient ;-). Make sure the other resistor is really 8.2K because that determines the feedback ratio. This way you can not burn up your circ

Raspberry Pi, PyFace Digital, the lost documentation, I found it finally

The Raspberry PI or R-pi from  is well known these days. It is not an accident that I have one, I have been doing Linux stuff since 1991, and professionally since 1996 I can not skip over these developments, have to keep up with the new kids. :-) Times have changed, hardware has become very affordable, everybody knows the Arduino , Raspberry Pi and Beagle-Bone-Black (BBB). Not everybody knows the stuff that  aka Acme-Systems and  aka  Olimex make, so I will endorse them here. Since I am an engineer I expect to connect switches and relays to the boards and some documentation with products, not so with the " PiFace Digital " board, it comes without serious documentation, not a even the schematic. All links on their blog point nowhere. People asked them many times, yet nowhere is the schematic to be found. I finally found some info after hours of google-work, someone made a c