Re: 2.0-beta CD Image mirror sites ?

1998-06-25 Thread Brederlow
Philip Hands <[EMAIL PROTECTED]> writes:

> Hi,
> 
> Could those of you who have grabbed, or are intending to grab the cd images 
> from www.uk.debian.org, and then offer them for anon access, please mail me, 
> so I can add your sites to the list of mirrors.
> 
> For more info about how to grab them from www.uk see this:
> 
>   http://www.uk.debian.org/debian-cd/
> 
> We could do with some sites in the USA (remember to skip the 
> 
>   non-us-non-free.raw
> 
> image though ;-)
> 
> Cheers, Phil.

In what formats are those images provided?
It would be nice to download the image in parts including md5sums and
to have some additional error correction chunks like ras provides.

I know that it would multiply the size requirements if various chunk
sizes are provided, but maybe one could make a small programm to
download a chunk of a given size. The programm would then split up the 
image and send the respective chunk, similar to what split does, but
with a parameter for which chunk one wants.

May the Source be with you.
Mrvn


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Re: 2.0-beta CD Image mirror sites ?

1998-06-25 Thread Philip Hands
Brederlow <[EMAIL PROTECTED]>
> In what formats are those images provided?

Single ISO image per CD.

> It would be nice to download the image in parts including md5sums and
> to have some additional error correction chunks like ras provides.

For the final release, this is probably worth the effort, but I'm a bit busy 
at present --- if one of the mirrors (whoever they are) wants to have a go, 
feel free.

Cheers, Phil.



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Re: 2.0-beta CD Image mirror sites ?

1998-06-25 Thread Wichert Akkerman
Previously Brederlow wrote:
> In what formats are those images provided?
> It would be nice to download the image in parts including md5sums and
> to have some additional error correction chunks like ras provides.

You're just describing how rsync works. rsync retrieves the file in
parts and compares checksums. And later you can update with rsync:
it just compares checksums of parts and replaces only changed blocks.

Wichert.

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Re: 2.0-beta CD Image mirror sites ?

1998-06-25 Thread Philip Hands
> 
> --0OAP2g/MAC+5xKAE
> Content-Type: text/plain; charset=us-ascii
> Content-Transfer-Encoding: quoted-printable
> 
> Previously Brederlow wrote:
> > In what formats are those images provided?
> > It would be nice to download the image in parts including md5sums and
> > to have some additional error correction chunks like ras provides.
> 
> You're just describing how rsync works. rsync retrieves the file in
> parts and compares checksums. And later you can update with rsync:
> it just compares checksums of parts and replaces only changed blocks.

The problem with rsync at the moment is that if the transfer is interrupted,
it throws away the partial image --- Andrew Tridgell said he'd fix this though.

In the mean time I'd either use wget (which can continue interrupted
transfers), and use HTTP, or do this:

  rsync the file,
  once it starts arriving, link the incoming file to a second name:

   ln .binary-i386.raw.a123456  binary-i386-saved-copy

  if you get a partial reception, mv the saved file to the proper name:

   mv binary-i386-saved-copy binary-i386.raw

  and re-do the rsync (and the saved-copy link)

You'll need more disk space this way, because rsync keeps the old file untill 
all the new one arrives.

If you use wget, and find that the md5sum that results is wrong, you should be 
able to fix any trasmission errors with rsync in short order, because it will 
only send the difference beween your broken copy and the real one.

This is mostly covered here:

  http://www.uk.debian.org/debian-cd/

Cheers, Phil.


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Re: 2.0-beta CD Image mirror sites ?

1998-06-25 Thread Raul Miller
Philip Hands <[EMAIL PROTECTED]> wrote:
> The problem with rsync at the moment is that if the transfer is
> interrupted, it throws away the partial image --- Andrew Tridgell said
> he'd fix this though.
...
> If you use wget, and find that the md5sum that results is wrong, you
> should be able to fix any trasmission errors with rsync in short
> order, because it will only send the difference beween your broken
> copy and the real one.

If this is the case, it seems like you could pad out the file
using dd >. and then use rsync to "correct the
changes".

-- 
Raul


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Re: 2.0-beta CD Image mirror sites ?

1998-06-25 Thread Philip Hands
> Philip Hands <[EMAIL PROTECTED]> wrote:
> > The problem with rsync at the moment is that if the transfer is
> > interrupted, it throws away the partial image --- Andrew Tridgell said
> > he'd fix this though.
> ...
> > If you use wget, and find that the md5sum that results is wrong, you
> > should be able to fix any trasmission errors with rsync in short
> > order, because it will only send the difference beween your broken
> > copy and the real one.
> 
> If this is the case, it seems like you could pad out the file
> using dd >. and then use rsync to "correct the
> changes".

No need to dd, rsync just handles it anyway.

Cheers, Phil.


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