[mkgmap-dev] Overflowed directory error

Fri Aug 21 16:22:35 BST 2009

Quoting Carlos Dávila <cdavilam at jemila.jazztel.es>:

> Hello all
> While compiling a map from 6 tiles obtained with splitter (manually
> adjusted areas.list) I get the following error:
> GRAVE (BlockManager): overflowed directory with max block 65534,
> current=65535
> There is not enough room in a single garmin map for all the input data
>    The .osm file should be split into smaller pieces first.
> I guess I must split some of the tiles but, how to know which one? Does
> it depend on the size (in MB) of the resulting maps?
> Regards
> Carlos
I also create manual areas.list files.  My experience is that even if  
I set max-nodes smaller in splitter, it can still create tiles that  
are too big for mkgmap.  My rule of thumb is that no tile created by  
splitter should be bigger than ~20MB (compressed, obviously).  This  
makes it easy to spot tiles that are too big and I've not (yet) had  
mgkmap fail when applying this rule.