[mirror-admin] sunsite.mff.cuni.cz doesn't use rsync --delay-updates

[Matt Domsch]

On Tue, May 05, 2009 at 11:42:34AM +0200, Jakub Jelinek wrote:
> On Tue, May 05, 2009 at 11:27:12AM +0200, J?n ONDREJ (SAL) wrote:
> >   anybody can help me to contact admin of sunsite.mff.cuni.cz? Trying to
> > report, that this tier1 mirror does not use --delay-updates and my mirror,
> > which is mirroring from this server is often broken. Even if I use
> > --delay-updates, this does not help, because I am mirroring incorrect
> > content. May be somebody should check, if all tier0 and tier1 mirrors using
> > proper rsync parameters.
> > 
> >   My mirror has very good connection to this server (SANET and CESNET have
> > good connection), so mirroring from other sites can reduce me download
> > speed.
> > 
> >   I tryed to contact Jakuk Jelinek without success. On tiering page there is
> > no contact for this tier1 mirror:
> >   http://fedoraproject.org/wiki/Infrastructure/Mirroring/Tiering
> > 
> >   If you know, how to contact admin of this server, please send him this
> > email. Thank you.
> 
> Last time I've enabled --delay-updates, rsync kept leaving around .* files
> in quite big volumes.  I can try to enable it again if it got any better
> since then.

If you don't use --delay-updates, then the other option is to use a
two-pass sync.  First you sync all the new packages, excluding (but
not deleting) repodata/, and not deleting removed packages.  Second pass
you sync repodata/ and delete removed packages.  This would ensure,
from an end-user's POV, a consistent mirror.  If the MM crawler scans
you in the middle of this though, it will think your mirror is not
up-to-date.  --delay-updates effectively does both passes for you in a
single pass.

-- 
Matt Domsch
Linux Technology Strategist, Dell Office of the CTO
linux.dell.com & www.dell.com/linux

--