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

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#1 2008-02-28 13:11:22

jayas
Member
Registered: 2008-01-24
Posts: 151

re: Backup your files before proceeding ... to stabilize operation!!!

Hello,

For the first time, when logging on to web interface of a DNS-323 configured as RAID 1, I got a strange dialog that reads

Code:

Backup your files before proceeding!

To stabilize operation, please login and select TOOLS -->
RAID to reformat your device with an EXT2 file system.

There is an Okay button but hitting it appears to have no effect!

Other than bunch of obsolete MD ioctl messages nothing else is unusual when telnet to the box and do dmesg.

Anyone care to explain the mindset of the programmer who implemented this dialog?!?

Jaya


H/W=B1 F/W=1.04; RAID1: SAMSUNG HD501LJ T166 (500GB, SATA 3.0Gb/s 16MB)

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#2 2008-02-28 13:44:56

fordem
Member
Registered: 2007-01-26
Posts: 1938

Re: re: Backup your files before proceeding ... to stabilize operation!!!

Welcome to open source - first step is to determine who the programmer is wink

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#3 2008-02-28 13:49:19

HaydnH
Member
Registered: 2007-09-28
Posts: 187

Re: re: Backup your files before proceeding ... to stabilize operation!!!

Sounds to me like it's decided you have a non ext2 filesystem -what does the output of /bin/mount tell you? You haven't upgraded from an old FW that supported ext3 have you?

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#4 2008-02-28 16:05:41

jayas
Member
Registered: 2008-01-24
Posts: 151

Re: re: Backup your files before proceeding ... to stabilize operation!!!

Hello,

Sounds unbelievable ... at the time I got the strange dialog there were two transfers going on that kept the DNS busy.  So if the DNS is busy, the programmer concluded it is time to back up the files and reformat the disk!

After the transfers completed, I checked the DNS through various means -- it is squeaky clean, and I had not even rebooted it.  How about that!!!

Jaya


H/W=B1 F/W=1.04; RAID1: SAMSUNG HD501LJ T166 (500GB, SATA 3.0Gb/s 16MB)

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#5 2008-02-28 16:48:29

HaydnH
Member
Registered: 2007-09-28
Posts: 187

Re: re: Backup your files before proceeding ... to stabilize operation!!!

Unfortunately all the web based functions are compiled in to the webs binary so it's probably nigh on impossible to have a look at the code that causes it also =/

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#6 2008-02-29 01:05:32

jayas
Member
Registered: 2008-01-24
Posts: 151

Re: re: Backup your files before proceeding ... to stabilize operation!!!

HaydnH wrote:

Unfortunately all the web based functions are compiled in to the webs binary so it's probably nigh on impossible to have a look at the code that causes it also =/

Hi HaydnH,

I find that the web based functions appear to of a somewhat poor standard compared to the underlying functions provided by the kernel and applications which are free as in 'open source'.

I thought I should look at and rebuild all components relating to goahead web server but I am not sure if it can be easily incorporated into the firmware without resorting to a full build.

I also found scenarios whereby if I backup the settings, and then restore the backed-up up settings, the web server panics and I lose the web interface from that point onwards.  Only way out I know is to do a hardware reset, revert to a configuration backup that works, and not rely on the configuration backups.

I wonder if D-LINK has the capability to attend to what I consider somewhat serious (e.g. losing data on disk, when this is the primary function of the product) defects in its implementation.

Jaya


H/W=B1 F/W=1.04; RAID1: SAMSUNG HD501LJ T166 (500GB, SATA 3.0Gb/s 16MB)

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#7 2008-02-29 01:32:39

fordem
Member
Registered: 2007-01-26
Posts: 1938

Re: re: Backup your files before proceeding ... to stabilize operation!!!

jayas wrote:

I wonder if D-LINK has the capability to attend to what I consider somewhat serious (e.g. losing data on disk, when this is the primary function of the product) defects in its implementation.

Jaya

Question for you - can you describe these serious defects in the implemetation?  Are they defects or are the side effects of well intentioned tinkering?

It had been my experience that if I leave my DNS-323 alone in the corner to do what it was designed to do, then it does it quite well.

I have lost data through having the wrong drive formatted, but only when I go fiddling with it and installing known defective drives to "test" it's response - I can tell you, for example, that with firmware 1.04, drive error/failure detection appears to be greatly improved over the earlier versions - it's caught every defective drive I've put in it.

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#8 2008-02-29 01:56:08

jayas
Member
Registered: 2008-01-24
Posts: 151

Re: re: Backup your files before proceeding ... to stabilize operation!!!

fordem wrote:

Question for you - can you describe these serious defects in the implementation?  Are they defects or are the side effects of well intentioned tinkering?

Hi Fordem,

I wouldn't consider adding or replacing drives, accessing the web interface when DNS is busy, and backing up and restoring configuration using the web interface as 'tinkering'.  Yet it appears that one lost data on a drive,  was recommended by web interface to backup and format the drives (which after all are running in RAID1), and required reseting to factory default and restart configuration all over again, respectively.

I accept you may not consider the above as serious but I was just expressing an opinion that I do because I believe these to be in the 'core functions' category as far as DNS specification is concerned.

Jaya

PS: I can list a host of other issues with pre 1.04 firmware that was released only very recently ... but that would be counter productive.


H/W=B1 F/W=1.04; RAID1: SAMSUNG HD501LJ T166 (500GB, SATA 3.0Gb/s 16MB)

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#9 2008-02-29 04:21:17

fordem
Member
Registered: 2007-01-26
Posts: 1938

Re: re: Backup your files before proceeding ... to stabilize operation!!!

What you have not mentioned is whether the core functionality failed on a bog standard DNS-323 or a hacked or otherwise modified DNS-323, from your previous posts, I would guess at that latter.

On a bog standard unit

Adding drives - has not caused problems for me - I have done this frequently
Pulling drives (to swap another one in) - has not caused problems for me - I have done this frequently
Pulling drives (to see if the RAID1 would work) - has not caused problems for me - I have done this several times
Replacing drives after RAID1 failure simulations - has not caused problems for me - it asks for a format and then rebuilds
Pulling drives (to see if I could lose data using JBOD) - has caused lost data - as I suspected it would
Installing known defective drives - has caused lost data

I've never backed up or restored the configuration using the web interface so I can't comment on that, and I've never accessed the web interface when the unit was busy, because I've never needed to - nor do I see why I should - in fact, I feel that this can be considered a configure and forget device, since it will email me the status updates I need to know (space and disk failure)

As I have said before - it's been my experience that if the thing is left alone to do what it was designed to do, it works.  Operating it in this mode, I have experienced only two of the numerous issues reported in this forum - an inability to copy files larger than 2GB from Windows Server 2003, and the disks not spinning down due to jobs in the print queue, both of which have been dealt with in the firmware upgrades.

My mods are few, I have my own fun_plug so that I get telnet access so that my automatic shutdown scripts run and some day I might get around to an automatic turn on circuit, I've long been puzzled as to why some of the folks here want to do, what they want to do with this.  If I remember correctly you have what I will term unusual security requirements - could this simply be a situation where you're force fitting the device into a solution that it was not designed for?  Could the problem you experience come simply from what you're trying to do with the device?

I've been in IT support for thirty years and experience has taught me that taking the lost cost approach and using consumer grade equipment in an environment it was not designed for, more often than not, produces unsatisfactory results - installing Windows Server on a desktop system is never as reliable as a purpose designed PowerEdge, ProLinea or xSeries server and the price differential is not that significant (I run my own small business on a IBM xSeries server that cost me USD$465 without monitor or OS)

I hold Dell DCSE, HP/Compaq ASP & IBM PS/2 Server Support certifications, I have been working on RAID systems going on fifteen years now - I've seen the big ones fail and I've seen the little ones fail - and after a year of beating on this thing, I will say it does a pretty good job, especially given it's cost and intended market.

If you're looking for bullet proof functionality, this is not the device for you, and you will not find anything in this price range that offers it, in fact, at double the price I don't think you'll get it, triple the price and you're approaching the low end of the Windows Storage Server solutions, some of which are just as unpredictable RAID wise, quadruple the price and you should be able to find the stability you're looking for - although even here you have no guarantee, I once went to a server equipped with hardware RAID5 and hot swap disks (I'd guestimate >$5000), the RAID management utilities said there was a failed drive, but all of the drive indicators were green - I pulled the drive that the management utility indicated and in the blink of an eye, trashed the array bringing the entire (as in every store) real time point of sale system in a countrywide chain of department stores down - turned out there were actually two failing drives.

So you had a drive fail, and the unit suggested you backup your data and reformat - as long as your data remained available, then the RAID functionality worked for you - you expect to be able to replace a drive and have it rebuild without having to backup, reformat & restore - that is not a requirement of a functional RAID system, it is a desirable feature, but not a requirement, and at least in my experience the DNS-323 does it.

Given the cost of the unit, it provides the functionalities I expect it to, in a manner I consider acceptable.

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#10 2008-02-29 04:38:45

jayas
Member
Registered: 2008-01-24
Posts: 151

Re: re: Backup your files before proceeding ... to stabilize operation!!!

fordem wrote:

What you have not mentioned is whether the core functionality failed on a bog standard DNS-323 or a hacked or otherwise modified DNS-323, from your previous posts, I would guess at that latter.

Hi Fordem,

For your information,  the problems I described (and lots more I reported directly to D-LINK) are repeatable on standard DNS-323.  No hacks or mods.  Hence your guess, as reasonable as you think it may be, is nonetheless incorrect.

I've never backed up or restored the configuration using the web interface so I can't comment on that, and I've never accessed the web interface when the unit was busy, because I've never needed to - nor do I see why I should - in fact, I feel that this can be considered a configure and forget device, since it will email me the status updates I need to know (space and disk failure)

I did not realise how much of a nerve I hit with my comment under the circumstances and after having examined some of the internal scripts.

I would rather not go further into debating your preferences because as I said, it is a matter of opinion, and in general one opinion is as good as any other smile

Jaya

Last edited by jayas (2008-02-29 04:39:27)


H/W=B1 F/W=1.04; RAID1: SAMSUNG HD501LJ T166 (500GB, SATA 3.0Gb/s 16MB)

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#11 2008-03-07 11:40:59

Dontknow
New member
Registered: 2007-08-25
Posts: 3

Re: re: Backup your files before proceeding ... to stabilize operation!!!

My drive is still active i see all the files on the drive nothing has happened to the data. Im just not able to access the web interface due to this message. It doesnt matter what account I use. Will attempt to do a hard reset once I get home.

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