Thanks Kris for your reply.
Yes the system is 100% powered 24/7, so it doesn't lose power at all. THE WDT
hasn't been triggered which I find most frustrating otherwise it would just
reboot (thus cleaning up whatever resources have been used up, or remove the
corrupting process).
On the multiple crontab process entries is very very strange indeed as there
are no crontab tasks placed at any time by any user (my programs) - I am the
only user on the system per say. I suspect the multiple entries of crontab are
some result, rather than the cause of my issues.
I will certainly give the documentation you mention a good going over and see
what else I can gleam from the system.
I am seriously considering having the system take /proc snapshots every four
fours or so and emailing them to me for disection and resource/limits
monitoring (via a script I will have to write).
Again Thanks.
--- In "Kris" <> wrote:
>
> 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" <wildpossum@> 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
> >
>
------------------------------------
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/ts-7000/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/ts-7000/join
(Yahoo! ID required)
<*> To change settings via email:
<*> To unsubscribe from this group, send an email to:
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|