- Putting symlinks (on Linux) in your data_dir does not work. (At least not for GeoTiff images.) But you can use absolute paths from the Geoserver control panel if you want to.
- Native JAI Image-IO needs to be ver. 1.1, not 1.0. Otherwise, geotiffs will not render. However, you don’t get any warnings other than the log files informing you that a method is missing and blank tiles being returned.