Looks like some file error, the server wasn't able to read data from a file, or more probably, write the data there in the first place.
First try changing the storage schema in world.ini to Anvil (see the wiki for details on how to do that). If that doesn't help, look in the region folder inside your world folder, if the MCA files there are both readable and writable by the server. If there are no files, the server probably has no rights to write to that folder. If the files are of zero size, there's some other problem. If the files appear normal, no idea then. It is possible that RasPi uses some kind of filesystem / CRT combination that we don't support fully.
I'm also wondering, is it possible to run the server under gdb on the device? (my emulator doesn't seem to support that) And even better, gprof? That could tell us about some bottlenecks the server's facing on RasPi.
First try changing the storage schema in world.ini to Anvil (see the wiki for details on how to do that). If that doesn't help, look in the region folder inside your world folder, if the MCA files there are both readable and writable by the server. If there are no files, the server probably has no rights to write to that folder. If the files are of zero size, there's some other problem. If the files appear normal, no idea then. It is possible that RasPi uses some kind of filesystem / CRT combination that we don't support fully.
I'm also wondering, is it possible to run the server under gdb on the device? (my emulator doesn't seem to support that) And even better, gprof? That could tell us about some bottlenecks the server's facing on RasPi.