Ville Skytt�rote : > On Thu, 2005-08-04 at 17:31 +0200, Matthias Saou wrote: > > > Well, if you're going to run "cp", you might as well use "-l" too in order > > to hardlink the files on the master server :-) > > Sure, but it's a matter of rsync's behaviour with hardlinks, which > according to the man page is slow/expensive. I've no first hand > experience on this nor can I tell whether it'd matter on the > fedoraproject.org servers. All mirror admins I know use rsync -H already (preserve hardlinks), or at least run "hardlink" or "hardlink++" locally after syncing. Even on trees as big as /pub/redhat or /pub/fedora, it's not _too_ expensive (but of course, this is subjective) and really saves a non negligible amount of disk space. For my /pub/fedora (core+extras) : Hard linking Statistics: Directories : 269 Regular files : 85471 Comparisons : 139 Hardlinked this run : 0 Total hardlinks : 19659 Bytes saved this run : 0 Total gibibytes saved : 14.6671 Total mibibytes saved : 15019.1 Total kibibytes saved : 1.53796e+07 Total bytes saved : 15748679984 Many of those are noarch packages, but also all of the i386 ones in x86_64, etc. My "partial" mirror : $ du -sh /var/ftp/pub/fedora 76G fedora So without all the existing hardlinks, it would use up roughly 90GB instead, which is roughly a 20% increase. So hardlinks where possible are a good thing IMHO, even if it would be easiest to just throw everything at the build system. Matthias -- Clean custom Red Hat Linux rpm packages : http://freshrpms.net/ Fedora Core release 4 (Stentz) - Linux kernel 2.6.12-1.1398_FC4 Load : 1.49 1.98 1.47
