After restarting our 75gb server mongo started creating new data files until the disk was full and it could not write more data. The size of the db has more than doubled in a couple of seconds. From there on we had to delete the last corrupted data file. But each time we restart mongo it creates new files we have reached 200 gb in a couple of hours. The
Db is running journaling and we don't see any error in the logs but the db is partially corrupted. When we save data from time to time the data is deleted from the collection instead of being saved.