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List:       snap
Subject:    R: [SNAP] SNAP stopped working
From:       "Andrea Benoni (inBiz/InfoCare)" <andrea.benoni () inbiz ! it>
Date:       2007-03-06 13:27:48
Message-ID: !&!AAAAAAAAAAAYAAAAAAAAAF1ZTslZVvVKj0kfd5s7UXDCgAAAEAAAAN7QLfWVeNRGv9kI/coBaWsBAAAAAA== () inbiz ! it
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My experience is a JVM system file corrupt after a power down/up.
We have file writing in our application, but not at the moment of off/on.
Whe use a configuration with flash memory every 3600 seconds.

Regards
Andrea Benoni
 

-----Messaggio originale-----
Da: snap-bounces@listserver.songnetworks.se
[mailto:snap-bounces@listserver.songnetworks.se] Per conto di Giorgio
Bresciani
Inviato: Tuesday, March 06, 2007 2:21 PM
A: snap@imsystech.com
Oggetto: Re: [SNAP] SNAP stopped working

I can provide my experience.
I experienced, just one time, that, after several and continuos power down
and power on, the jar file of the application got corrupted.

Regards.


----- Original Message ----- 
From: "Christian Blixt" <christian.blixt@imsystech.com>
To: <snap@imsystech.com>
Sent: Tuesday, March 06, 2007 11:04 AM
Subject: RE: [SNAP] SNAP stopped working


> Hi Dan,
>
> It's a known fact that the current SNAP file system doesn't handle power
> failure well when writing. However, you say that the Java application
> doesn't write to flash.
>
> We will have to investigate this, to see whether there is some kind of
flash
> write made by the system software at startup, or if the flash gets
corrupted
> anyway. We'll let you know if we can reproduce the problem.
>
> Regards,
>
> Christian Blixt
> Tel: +46 (0)8 594 110 82
> christian.blixt@imsystech.com
>
> Imsys Technologies AB
> Tel: +46 (0)8 594 110 70
> Fax: +46 (0)8 594 110 89
> www.imsystech.com
>
>
>
> -----Original Message-----
> From: snap-bounces@listserver.songnetworks.se
> [mailto:snap-bounces@listserver.songnetworks.se]On Behalf Of Dan LaRue
> Sent: den 4 mars 2007 05:11
> To: snap@imsystech.com
> Subject: [SNAP] SNAP stopped working
>
>
> Hi,
>
> A working SNAP module (firmware version 1.0.5, rev C hardware) was in
> a system that had a faulty power connector.  As a result the 5 volt
> supply was going on and off randomly.  After a few minutes, the SNAP
> module failed to boot and gave an LED blink code of 6, snap.gpx file
> can't be read.
>
> This occur in front of a customer and is a little embarrassing since
> I recommended SNAP to this customer.  To get this customer happy
> again and make SNAP sales, I need to explain why SNAP failed.  I was
> able to reinstall firmware and get it working, however failures in
> the field will not be recoverable without severe pain.
>
> Our java application does not write to flash.  My guess is there is
> an issue where SNAP's flash filesystem can get corrupted even without
> writes.  Beyond my guessing, can anyone explain why did the snap.gpx
> go away or get corrupted?
>
> thanks for any assistance,
> Dan
>
>
>
> --
> Dan LaRue                               Plum Software Associates
> Senior Systems Engineer          94 Northern Blvd.
> dlarue@plumsoftware.com         Newbury, MA 01951
> Phone: 978.590.8555                 Fax: 978.463.0510
> www.plumsoftware.com
>
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