[OSM-dev] How to delete metatiles?

[Jon Burgess]

On Sun, 2011-01-16 at 19:26 +0100, Frederik Ramm wrote:
> Hi,
> 
> Jon Burgess wrote:
> > Other possible enhancements:
> > - Configurable tile size: 64 pixel etc
> > - Embed the mime-type in the meta tile, allowing JPG tiles etc
> > - Support a different directory layout supporting higher zoom levels
> 
> + Extra points for thinking of something that would let you seamlessly 
> migrate from one directory layout to another (e.g. because you want to 
> add more zoom levels) without doing one huge "mv" job ;)

Yes, rest assured that I'm aware of how big an issue it will be to deal
with the transition of millions of tiles to a new directory layout! 

Does anyone use the existing scheme with max_zoom > 18? If not the
changes could only effect higher zooms, perhaps as a compatibility mode.

I'm wondering if there should be a config file at the top of the
metatile tree which say things like which directory layout is in use,
the tile size, image mime-type etc.

    Jon