Re: [ts-7000] General Reliability of 2.6.21 on TS7800

[Robert Ulbrich <>]

Hi Jay,

We have had the same problems. In my opinion, the only major issue with the 7800 is the SD card driver (which isn't really Technologic's fault). We have ~50 TS-7800s in the field and were experiencing lockups when using the SD card for data storage. In testing, I've been able to produce a lockup by writing heavily to the SD card, everything works on the board except accessing the SD filesystem. During testing, I've also corrupted five different SD cards (2 SanDisk Extreme III 2GB, 1 SanDisk Class 2 2GB, 1 AData 2GB, & 1 PNY 1GB). When I say corrupt, I mean like, it isn't recognized anymore when I plug it into my PC, no device node shows up, so I can't reformat or repartition. I even tried downloading a utility from Sony to do a low-level re-format...it couldn't recognize the card either.

We haven't had any lockups to my knowledge since we switched to using USB drives for our data storage. The problem now is getting an industrial grade USB drive that really can hold up to the +70C temperatures.

I think the main reason for the problems with SD is the lack in openness from the SD Association. Apparently this is the reason that there are no open-source SD drivers available. So Technologic was tasked with writing their own SD wrapper around a blob released by the SDA.

We are also seriously considering this board since SD storage is a key item in this board's appeal.

--Robert


jfroot wrote:

 

Does anyone have any opinions on the general reliability of the 2.6.21-ts kernel running on the TS7800? I have 34 of 7800s running 2.6.21-ts kernel around the world and I am getting frequent crashes and hung kernels all the time. I am glad I put remote power cycle devices at each location or I would be hooped.

All we are running is SSH, SNMP, a Java process and NTP. This java process collects data via serial port (ttyS1) and forwards the data via UDP back to our central office. After about 2 or 3 weeks of uptime processes will occasionally hang, or ssh will stop allowing logins. It seems to be a lockup with SD card reads but it is hard for me to diagnose.

I am curious who has TS7800s running Linux 2.6.21 running in other production environments and how they find the stability?

--
Jay

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