You may be seeing some filesystem corruption in this case. It is very odd
since it sounds like you do not reboot or lose power at all, but it still may
be wise to look in to the whitepaper we offer on dealing with/preventing
filesystem corruption: http://www.embeddedarm.com/about/resource.php?item=459
We also have a small how-to for putting this theory in to practice on a
TS-73x0: http://www.embeddedarm.com/about/resource.php?item=466
Hope this helps.
-Kris Bahnsen
Technologic Systems
--- In "wildpossum928" <> wrote:
>
> Hi All.
>
> I have a TS-7800 system running some process monitoring hardware & software I
> wrote which works really well. Hardware wise it is a TS-7800 system +
> TS-SER1-Serial 4 Port PC/104 Peripheral + BBU etc.
>
> I usually remotely ssh into the TS-7800 to retrieve required measurements on
> a weekly basis. The system has been operational for about 18 months.
>
> Unfortunately, every 12 weeks or so, the TS-7800 goes out to lunch. If I look
> into what is happening via sys-console (ttyS0) via a process status command,
> the system appears totally trashed. I noted last time that their where over
> 25 crontab process still in the scheduler list and my application(s) totally
> removed. When I tried to initiate a reboot via the sys console it just
> executed a crlf, thats it. It took a physical removal of the power to effect
> a system reset/reboot correctly.
>
> /var/log/message & /var/log/syslog showed only the time the system screwed
> itself. No log (daemon,user,message,syslog,application) shows any indication
> of what may be the problem. I have the logs running on max debug where
> possible, and all services not used or required have been removed from the
> rc.d directory to avoid unaccounted activity.
>
> I have proved to myself that ssh access by hackers/etc. hasn't been a issue
> because I placed a tighly closed router/firewall together with packet
> inspection (hw system) proir to the TS-7800 system. The TS-7800 also has a
> complete BBU and monitoring h/w which indicates any environmental problems.
>
> /proc/utils show that the system has suffered some direct effect, as for
> example all the normally loaded modules are either missing or not correctly
> running. Say with some of the daemons, all this even though there are no
> applicable log entries.
>
> Has anyone suffered unexplainable long-term problems with TS-7800 running
> 2.6.21-ts #1 PREEMPT Fri Oct 10 10:20:42 MST 2008 armv5tejl GNU/Linux ?
>
> I would appreciate any experienced feedback on what to try next - These sort
> of problems are excellent in sending you crazy, and your client to selection
> another brand of embedded pcb / O.S.
>
> Would upgrading to Lenny/2.6.35++ be advisable or would it simply be adding a
> new unknows to the problem bowl.
>
> Cheers.
> Grahame
>
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