Add miner config to always keep ensealed deal copies

node/config/def.go

@@ -64,6 +64,8 @@ type SealingConfig struct {
 	MaxSealingSectorsForDeals uint64
 
 	WaitDealsDelay Duration
+
+	AlwaysKeepUnsealedCopy bool
 }
 
 type MinerFeeConfig struct {

node/modules/storageminer.go

@@ -810,6 +810,7 @@ func NewSetSealConfigFunc(r repo.LockedRepo) (dtypes.SetSealingConfigFunc, error
 				MaxSealingSectors:         cfg.MaxSealingSectors,
 				MaxSealingSectorsForDeals: cfg.MaxSealingSectorsForDeals,
 				WaitDealsDelay:            config.Duration(cfg.WaitDealsDelay),
+				AlwaysKeepUnsealedCopy:    cfg.AlwaysKeepUnsealedCopy,
 			}
 		})
 		return
@@ -824,6 +825,7 @@ func NewGetSealConfigFunc(r repo.LockedRepo) (dtypes.GetSealingConfigFunc, error
 				MaxSealingSectors:         cfg.Sealing.MaxSealingSectors,
 				MaxSealingSectorsForDeals: cfg.Sealing.MaxSealingSectorsForDeals,
 				WaitDealsDelay:            time.Duration(cfg.Sealing.WaitDealsDelay),
+				AlwaysKeepUnsealedCopy:    cfg.Sealing.AlwaysKeepUnsealedCopy,
 			}
 		})
 		return