[mirror-admin] Please use --delay-updates

[Jonathan Dieter]

On Wed, 2010-04-14 at 11:27 -0700, J.H. wrote:
> On 04/14/2010 11:15 AM, Jonathan Dieter wrote:
> > On Wed, 2010-04-14 at 09:18 -0500, Matt_Domsch at dell.com wrote:
> >> 2) if you are excluding content, such as the deltarpms, please exclude
> >> whole directories, not individual files within a directory.  MM gets
> >> very confused if you exclude individual files.  I don't think that's
> >> what was happening here, but I offer this as a reminder.
> > 
> > FWIW, I think excluding the deltarpms and not the rpms would leave a
> > mirror in an inconsistent state for users of yum-presto.  Presto uses
> > yum's mirrorlist when getting prestodelta and the deltarpms, which means
> > a whole bunch of 404's for users downloading deltarpms if you
> > --exclude=drpms on your mirror.
> 
> I suppose the question then is how pervasive is yum-presto?  I'll admit
> this is the first time I've heard of it, and there's no requirement that
> Fedora as an upstream is putting onto the mirrors to retain the
> deltarpms.  I think your going to find that relying on the normal
> mirrorlist with this, your going to have to build it with the
> understanding that not all mirrors will have what your looking for.  Or
> your going to have to independently query the mirrors and generate your
> own mirrorlist for use with yum-presto (or convince Matt to take a patch
> that adjusts mirrorlist for your purposes).

I'm afraid I don't know what the Fedora policy is on mirrors carrying
deltarpms.  However, yum-presto was turned on by default in the default
desktop spin and KDE spin for Fedora 12 (and possibly the LXDE spin as
well; I'm not sure), so unless it was manually removed, most Fedora 12
installations will be using it.

I should point out that I have yet to hit a mirror that wasn't carrying
deltarpms (and I don't have any bug reports for this particular
problem), so this probably isn't something to worry about at this point.

Jonathan
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