To be confirmed

In certain situations a disk tile can remained locked (this should only happen if the server is uncleanly stopped during a rendering step - this should be pretty rare).

mod-geocache should be able to recover from this by setting a timeout on the wait that occurs when a locked tile has been discovered. this timeout should be sufficiently long to allow a long rendering to complete before trying again.

another solution could be to attach a pid to the lock file to detect if the lock comes from a previous unclean shutdown.

another solution would be to put locks in a shared memory segment that would be erased when apache is restarted.

This issue was closed by revision r236.