Re: final release - p2p or mirrors

[Jim Cornette <redhat-jc insight rr com>]

Pedro Fernandes Macedo wrote:
> Jim Cornette wrote:
>
> > Would this be like a partition with no prior data installed? A 
> > partition previously formatted and mounted to a specified point. Say, 
> > for example /mnt/bittorrent?
> >
> > Having a low fragmentation level would be desirable goal for a to be 
> > created CD set.
> I'm not sure.. The latest version of bittorrent (according to the 
> homepage) , allocates space when it is needed , instead of allocating 
> all the space when starting the download. This can now lead to high 
> fragmentation (as any file changing size can be fragmented)...

So the space allocation was setting aside a certain number of gigabytes 
(mbytes or whatever) in bittorrent for the transfer. Whaver bytes were 
retrieved were placed into the set aside space in the location that the 
final ISO image would be located on the media used for receiving the 
image. This resulting in a less fragmented transfer. Now it is 
dynamically located and might throw the retrieved bytes wherever the 
next available media spot is.

I was thinking along the lines of a fresh partition and pointing 
bittorrent to the specified newly created partition. (misunderstood 
allocating space ahead of time.)

> > Thanks for pointing out the safegaurds setup for a transfer of this 
> > type. Would the unmatching chunks be discarded or would the bittorrent 
> > process be interrupted? Either way, the bittorrent does not sound as 
> > risky as it once did. I still prefer ftp transfers from familiar 
> > mirrors. This is mainly because with bittorrent, you have to learn how 
> > to open ports for the torrent, people are pulling bits from my 
> > machine, I am pulling bits from machines that are unfamiliar to me. 
>
>
>
> The bad chunks are simply discarded and the download continues. These 
> chunks are then downloaded from other sources and this is repeated 
> untill you get the full file , with the correct checksum... It's the 
> same idea behind the protocol used in xmule/amule/emule/edonkey. 
> Download each part , check it and download from someone else if it is 
> not valid.

Thanks for the info.

Jim

> --
> Pedro Macedo