Well, since I reformatted my hard drive using ext3, the scripts are running without any further issues. Quadrants 1, 3 and 4 already are finished, but quadrant 2 still will need a while: It just hit lat 35 and thus still has to process central europe and russia completely.
After that, I’ll process the boundings of the map; the current run omits the outmost rows and columns of tiles due to a limitation in srtm2osm: it cannot cope with the values of 180 and -180 for the longitude. So I decided to process the 1076 tiles of the bounds as an extra run.
