Pierre-Yves David <pierre-yves.david@octobus.net> [Wed, 17 May 2017 14:40:18 +0200] rev 2394
obshashrange: cleanup 'valid' life cycle
- reset is only called when we detect a strip, the on disk data are invalid,
- after a reset, we should not keep using the data base connection,
- after a write, the on disk data are valid.