Deltaisos available for 13 Beta RC4 -> RC5 (i386 and x86_64)

[Andre Robatino]

Kamil Paral <kparal <at> redhat.com> writes:

> 
> ----- "Adam Williamson" <awilliam <at> redhat.com> wrote:
> 
> > On Wed, 2010-04-07 at 10:05 -0400, Andre Robatino wrote:
> > > BitTorrent: http://thepiratebay.org/user/andre14965/
> > 
> > Thank you Andre, that helped my testing!
> 
> Yes, it helps a lot of people, and it's vital for me. Just for
> your information, I have filed a ticket at RelEng to provide
> deltaisos officially:
> 
> https://fedorahosted.org/rel-eng/ticket/3575
> 
> Let's hope it gets implemented :)

I've created deltaisos for 13 Alpha -> 13 Beta (AKA RC5) and 12 -> 13 Beta.  The
fractions of full ISO size and approximate applydeltaiso times between 12, 13
Alpha, and 13 Beta are as follows:

12 -> 13 Alpha (i386): 38.6%, 41 minutes
12 -> 13 Alpha (x86_64): 38.5%, 44 minutes

12 -> 13 Beta (i386): 40.1%, 39 minutes
12 -> 13 Beta (x86_64): 40.1%, 48 minutes

13 Alpha -> 13 Beta (i386): 10.3%, 26 minutes
13 Alpha -> 13 Beta (x86_64): 9.7%, 30 minutes

Based on the small difference between the first two pairs, I think it's safe to
say that 12 Final -> 13 Final will be less than 50% of full size.  If these were
available on the regular mirrors, anyone with a Fedora box, a copy of the old
version, and less than about 5 Mb/s download would be able to save time. 
Someone with 768 kb/s download would need about 10 hours to download a full ISO,
but less than 5 hours for the deltaiso, not including the time (less than an
hour on a decent PC) for rebuilding the full ISO.  No new signed checksum files
would need to be created, since only the new ISO needs to be verified (although
it's probably a good idea to include unsigned MD5 checksums so people can check
that their download isn't corrupted before starting the rebuild).