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Subject: Crash-Safe recording mode? Re: Archos 20 recorder HELP NEEDED
From: Martin Borus (martin_at_borus.de)
Date: 2002-11-22


rockbox_at_cool.haxx.se schrieb am 22.11.02 11:36:42:
> On Fri, 22 Nov 2002 01:54:52 -0800 (PST), Manfred Bedwall wrote:
>
> >I have big problems o make extreme recordings, up to
> >10 hours. The whole Archos recorder just chrasches,
> >and everything goes black after a while

I'm had the same thing happen to me loads of times.
In most cases pressing "F3" on the blank screen stops
the recording and saves it anyways.

Do you leave the charger connected while recording?
There was a report that when you use ROLO to reload
the Archos firmware for recording charging does not work.
This is consistent with my recording experiences. I now use
externally charged 1800mA batteries - these last for 8-10
hours of recording time.

> Recording is being implemented in Rockbox right now. We are still in
> the early stages and busy testing. So I am afraid that for now you
> have little choice but to stick with the archos firmware.
>
> My experience is that sometimes the archos firmware works for hours
> without a hitch and all of a sudden it just freezes. There is little
> that can be done.

You can take a disk recovery tool and find all the clusters on the
HD. Happy hunting. It tried this once and ended up with gigabytes of
old recording bits - each a minute-something long.

This brings me to this idea:
Is it somehow possible to have temporary files (=file pointers)
created during a recording where each written block of the recording
has an incremented filename? If you had these in case of a crash
you'd never lose the complete recording - you'd just grab those
files and stick them together. A good place for these would be a ".rockbox/recording"
directory. After a completed recording the ".rockbox/recording"-directory could be
deleted.

Or even better:
I don't see why there should not be some kind of crash recovery
that would offer to rescue an interrupted recording on the next bootup -
just one look into the ".rockbox/recording" is enough to check if an interrupted
recording is still waiting to be completed - the data is all there...
This would be extremely useful in live situations, as otherswise after a failed
recording you would need PC access to rescue data before you can start
recording again.

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