[clug] Centos: Creating a DVD from multiple CD ISO images

[Steve Walsh]

A lot of people who provide mirrors push DVD sized images to FTP, 
partially due to a previously broken version of apache that couldn't 
handle anything above 2Gb, but also so that an expensive httpd process 
isn't tied up as someone on a 256k DSL attempts to download the ISO in 
question..

Every time I find a mirror that is missing DVD images, I check ftp and 
can generally find what I want there.

On 10/19/2009 03:33 PM, steve jenkin wrote:
> This will likely be Old News to the Centos bufs out there.
> My Apologies in Advance.
>
> ------------------------
>
> Today I wanted to download the DVD iso and it wasn't available on my
> local mirror - only the 6*CD iso images.
> The Mirror has a 'torrent' image, but I'm not keen on using bitorrent at
> work.
>
> In the Centos 'build' directory, there's a basic script to combine CD
> iso's into single DVD...
> Make sure you read the instructions.
> It took me two goes to get a result :-(
>
> <http://mirror.centos.org/centos/build/mkdvdiso.sh>
> <http://mirror.aarnet.edu.au/pub/centos/build/mkdvdiso.sh>
>
> You need 2*DVD size spare (8Gb currently):
>   - it explodes each ISO into the file system
>      (in your homedir, by default ~/mkrhdvd)
>   - then creates an ISO image from that.
>
> The script doesn't check for 'No space' nor ISO too large size...
> Nor does it create an md5sum for you.
>   (Can't use the MD5 for the normal download ISO.).
> Runs as 'root' to allow "mount -o loop ..." onto /tmp/loop.
>
> You can set LOOP and DVD variables to use other directories.
> WARNING: those directories are created and destroyed by the script by:
>
> rm -rf $LOOP $DVD
>
> mkdir -p $LOOP
> mkdir -p $DVD
>
>
> Invoke as:
> ----------
>
> mkdvdiso.sh source_dir /destination/DVD.iso
>
>
> =>  The script does a "cd $DVD" then
>     'mkisofs ... -o $2 ..."
>
> So when I ran it as:
>
>   mkdvdiso.sh ~/iso/Centos/5.3_iso ./DVD.iso
>
> =>  the iso was created in the temp $DVD dir and deleted :-(
>
> Working cmd:
>   mkdvdiso.sh ~/iso/Centos/5.3_iso $PWD/DVD.iso
>
>
>
> Dependencies&  local edits:
> --------------------------
>
> The script needs 'implantisomd' - probably there on Centos/RHEL/FC
> systems. (The complement is checkisomd5 )
>
> On Debian/ubunut:
>   sudo apt-get install isomd5sum
>
> PLUS: edit the mkdvdiso.sh and correct the hard-coded path at the end.
>
>
>    

-- 
--==--
Steve Walsh
RHCE
Vice President / Sysadmin team member - Linux Australia
Networks and Technology - Linux.conf.au 2008
Evil Network Bunny - Linux.conf.au 2009
Networking alpha geek - Linux.conf.au 2010