DVD images of new FC

[Pedro Fernandes Macedo]

Chris Adams wrote:

>Once upon a time, Maynard Kuona <knxmay001 at mail.uct.ac.za> said:
>  
>
>>I think is the interests of saving space, what is more needed is a
>>script which is part of the isos which can automate the making of the
>>dvd from the normal isos. This will require more space, but probably
>>more efficient for everyone too, since you will only have to redownload
>>1 iso if something goes wrong, rather than a whole dvd iso.
>>    
>>
>
>Here's my script to do this:
>
>http://www.iruntheinter.net/files/misc/mkdvd-1.0
>
>It tries to catch the errors and clean up.  I'm thinking about adding
>MD5SUMS checking to it.
>
>This one uses the "-f" option to mkisofs to follow symlinks so that it
>doesn't have to copy the whole tree to disk.  This speeds up the process
>significantly and also doesn't require as much disk space.
>  
>

This topic may be the best time to introduce a new idea.. I recently 
tested the "jigdo" program to download the isos for a debian install. 
This could help save space on both CD isos and DVD isos..
Here's how jigdo works:
there's a jigdo program (available for windows and linux) . You download 
a .jigdo file for each file you want to download (suppose you want to 
download yarrow-i386-disc1.iso , then you download 
yarrow-i386-disc1.iso.jigdo) . The .jigdo file is very small (about 30 
KB) . Then , the jigdo program downloads a .template file (for the 
debian cds , they were about 27mb each). It then asks which mirror it 
should use to download the remaining files. Then , it downloads every 
file that belongs in the CD (in our case , the base RPMS) and builds a 
perfect iso file .
If we check the ftp site , we'll see that the 
fedora/linux/core/1/i386/os/ directory (for example) , contains all the 
files that exist on the 3 ISOS. This means that if we have on the mirror 
all the 3 isos and the install tree , we're having two copies of each 
file (one being in fedora/linux/core/1/i386/os/ and the other being 
inside one of the isos). With jigdo we could stop this waste of space , 
by having only one copy of each file in the $releasever/$basearch/os 
directory... The total size of the .jigdo and the .template files for 
the 3 binary cds and for the SRPM cds would be around 100Mb , instead of 
the 3.6 Gb used by the 6 CD set...
With this , we could also provide the .jigdo and .template files for the 
DVD images as well , without needing huge amounts of disk space on the 
mirror.. And this can be applied to the binary isos and for the srpm 
isos , as all the needed files are on the mirrors... The only situation 
where this isnt possible is with the isos for the test releases, because 
the updates and the base files are located on the development directory 
and the original files are removed when they are updated...

What do you guys think? I was thinking about this and was almost posting 
this suggestion to fedora-devel-list...

--
Pedro Macedo