Hmm, rollback means changing the state to one earlier in time. Sometimes that means reapplying data from the log to achieve a consistent state. After the log is

Hmm, rollback means changing the state to one earlier in time. Sometimes that means reapplying data from the log to achieve a consistent state. After the log is applied there is no evidence of the failure. What you describe, with correcting entries, I would call a ledger system. This is what banks use.