Unable to start mongod

Logs :

Thu Mar 22 17:38:12 [initandlisten] info no lsn file in journal/ directory
Thu Mar 22 17:38:12 [initandlisten] recover lsn: 0
Thu Mar 22 17:38:12 [initandlisten] recover /u01/shard3/journal/j._0
Thu Mar 22 17:38:12 [initandlisten] journal file version number mismatch. recover with old version of mongod, terminate cleanly, then upgrade.
Thu Mar 22 17:38:12 [initandlisten] User Assertion: 13536:journal version number mismatch 0
Thu Mar 22 17:38:12 [initandlisten] exception during recovery
Thu Mar 22 17:38:12 [initandlisten] exception in initAndListen: 13536 journal version number mismatch 0, terminating
Thu Mar 22 17:38:12 dbexit:
Thu Mar 22 17:38:12 [initandlisten] shutdown: going to close listening sockets...