[CentOS-mirror] CentOS 7 (1511) release and mirror status

Thu Dec 10 15:35:17 UTC 2015
Anssi Johansson <centos at miuku.net>

10.12.2015, 13.12, Fabian Arrotin kirjoitti:
> Just to let you know also that (to be confirmed though) expected size
> is ~22Gb.

At the risk of sounding more and more like a broken record, but for the 
benefit of our newest mirror operators: Please remember to use the -H 
flag when rsyncing to preserve hard links. Files on msync.centos.org 
have been hard linked as appropriate.

Using that flag would have multiple benefits:

1) Reduced hard disk space. For example, the boot.iso in 
os/x86_64/images is the same as the CentOS-7-x86_64-NetInstall-1511.iso 
in os/x86_64/isos. By using hard links, those files would need to be 
stored only once on your hard disk.

2) Faster sync times at release. Many packages in 1511 have already been 
published as updates to 1503, either via updates, fasttrack or cr. Those 
not using the rsync -H flag will now need to download all the os RPMs in 
1511, instead of just making more hard links to the already existing files.

3) Bandwidth consumption would also be reduced, both from your side and 
from the CentOS msync service side. This will also help with people 
rsyncing from your mirror (if you provide rsync), if they also use the 
-H flag to preserve hard links.

If you are currently not using -H but wish to start using it, go ahead 
and add the flag to your command line. rsync will automatically take 
care of removing the duplicate files during the next sync.

For reference: https://wiki.centos.org/HowTos/CreatePublicMirrors