Date   : Wed, 06 Sep 2006 13:55:50 +0100
From   : "Ian Wolstenholme" <BBCMailingList@...>
Subject: Re: Tube File Copying

This is a bit of a problem, I had hoped that once the files had been
copied and reconstructed on the A5000 then they could be accessed
via ANFS on the Master as if they were locally stored.

I am using a Master with these huge files stored locally and copying
them for reasons of preservation.  The only facility I have which is
big enough to take all the data and can support individual file
sizes big enough is RISC-OS and the only way I can get the files
from the Master to RISC-OS is via Econet.

Has anybody worked out what I am doing yet?

Best wishes,



Ian

----- Original Message -----
From: jgh@... (Jonathan Graham Harston)
To:  bbc-micro@...
Sent:  05 Sep 2006 23:56:02 +0100
Subject: [BBC-Micro] Re: Tube File Copying

>Message-ID: <42765C438D2544E6B7F0033CC83D001C.MAI@...>
 
"Ian Wolstenholme" <BBCMailingList@...> wrote:
> So I think the solution is going to have to be to knock together
> a routine to copy these huge files in chunks of less than 16MB
 
You are *never* going to be able to copy >16M files with 8-bit
NetFS. 8-bit NetFS simply does not understand 32-bit file lengths
or 32-bit pointer offsets. Trying to do PTR#out%=&1000000 with
8-bit NetFS is defined as not possible and will give undefined
results.
 
> with an option to set the "start point" in the original file to
> get round any timeout errors and then when I've finally got
> them all copied onto the A5000 I can stitch them back together
> from there.
 
You haven't made it clear, but are you trying to use a Master to
copy >16M files from a non-NetFS filing system on the Master (eg
ADFS) to a file server that the Master is logged on to?
 
-- 
J.G.Harston - jgh@...                - mdfs.net/User/JGH
Taxation is like dairy farming. You have to extract the maximum amount of
milk with the minimum amount of moo.