proposal CommP doesn't match calculated CommP

[nonsense]

Larger legacy markets deals are failing with proposal CommP doesn't match calculated CommP... happens on every deal that is larger than 500MiB or so.

2022-03-15T16:00:44.432+0200    INFO    markets loggers/loggers.go:20   storage provider event  {"name": "ProviderEventDataVerificationFailed", "proposal CID": "bafyreicevbypx3wwcvaqzcpuxctjukszglinrlwxg567hmsbmrhnrj46ky", "state": "StorageDealFailing", "message": "deal data verification failed: proposal CommP doesn't match calculated CommP"}
2022-03-15T16:00:44.447+0200    WARN    providerstates  providerstates/provider_states.go:595   deal bafyreicevbypx3wwcvaqzcpuxctjukszglinrlwxg567hmsbmrhnrj46ky failed: deal data verification failed: proposal CommP doesn't match calculated CommP
2022-03-15T16:00:44.447+0200    WARN    providerstates  providerstates/provider_states.go:614   error finalizing read-write store, car_path=/root/.boost/deal-staging/fstmp308305850: failed to finalize read/write blockstore: called Finalize on a closed blockstore
2022-03-15T16:00:44.647+0200    INFO    markets loggers/loggers.go:20   storage provider event  {"name": "ProviderEventFailed", "proposal CID": "bafyreicevbypx3wwcvaqzcpuxctjukszglinrlwxg567hmsbmrhnrj46ky", "state": "StorageDealError", "message": "deal data verification failed: proposal CommP doesn't match calculated CommP"}

[margox]

filecoin-project/lotus#8010

[jacobheun]

Closing this as #673 has a more in depth analysis of known issues as well as links to various fixes that have been done.