Jaak Laineste wrote: > > I do not have diff update for my osm2pgsql database, just to make > renderd happy I created /var/lib/mod_tile/planet-import-complete file > with yesterdays date and started to prerender tiles with ./render_list > -m default -a -z 0 -Z 10 > > But now I noticed that when I rerun the command then it always > re-renders also already existent tiles. > Indeed render list renders all tiles you specify in the list independent of their age. The rendering daemon (renderd or tirex) render everything that they get handed. The filtering of what to render (e.g. because they aren't outdated) happens in the calling program e.g mod_tile or render_list. What you are probably looking for is the program render_old. It gos through all the rendered tiles on disk and figures out if that tile is outdated or not. If it is, it submits it for re-rendering. If it is fresh, it will just ignore the tile.
Jaak Laineste wrote: > > How renderd detects whether > tile should be re-rendered, is it only about date of > planet-import-complete file, or something else ? Does it matter if I > tweak layout file? > As mentioned above, it is mod_tile that does the detection and it should only pass the relevant requests onto renderd. Tweaking the style sheet will not effect the determination of if a tile is fresh or not. This only depends on the timestamp of the rendered tile on disk and the timestamp of the planet-import-complete file. If you want to force a complete rerender of the tiles due to a change in the style sheet, you need to update the timestamp of the planet-import-complete file, e.g. via the command "touch" Jaak Laineste wrote: > > I've seen earlier similar issue with live tile rendering - > renderd/mod_tile tries to rerender tiles which are already rendered > and as database is never automatically updated, then I know that tiles > cannot be outdated. > Assuming you planet-import-complete file is in the correct location, it is readable to mod_tile (apache user) and its timestamp doesn't change, this shouldn't happen. If it still does, it would be good if you could give some more information about this to see where things go wrong. Kai -- View this message in context: http://gis.638310.n2.nabble.com/mod-tile-render-list-re-renders-existing-tiles-without-apparent-need-tp6982160p6984072.html Sent from the Developer Discussion mailing list archive at Nabble.com. _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
