cmd/geth: exit when freezer has legacy receipts (ethereum#24943)

In ethereum#24028 we flagged a warning when finding legacy receipts in the freezer. This PR nudges users a bit more strongly by preventing geth from starting in this case until receipts have been migrated.

It also adds a flag --ignore-legacy-receipts which when present allows geth to start normally.

cmd/geth/config.go

@@ -165,7 +165,7 @@ func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
 	}
 	backend, eth := utils.RegisterEthService(stack, &cfg.Eth)
 	// Warn users to migrate if they have a legacy freezer format.
-	if eth != nil {
+	if eth != nil && !ctx.GlobalIsSet(utils.IgnoreLegacyReceiptsFlag.Name) {
 		firstIdx := uint64(0)
 		// Hack to speed up check for mainnet because we know
 		// the first non-empty block.
@@ -177,7 +177,8 @@ func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
 		if err != nil {
 			log.Error("Failed to check db for legacy receipts", "err", err)
 		} else if isLegacy {
-			log.Warn("Database has receipts with a legacy format. Please run `geth db freezer-migrate`.")
+			stack.Close()
+			utils.Fatalf("Database has receipts with a legacy format. Please run `geth db freezer-migrate`.")
 		}
 	}
 

cmd/geth/main.go

@@ -158,6 +158,7 @@ var (
 		utils.GpoMaxGasPriceFlag,
 		utils.GpoIgnoreGasPriceFlag,
 		utils.MinerNotifyFullFlag,
+		utils.IgnoreLegacyReceiptsFlag,
 		configFileFlag,
 	}, utils.NetworkFlags, utils.DatabasePathFlags)
 

cmd/geth/usage.go

@@ -249,6 +249,7 @@ var AppHelpFlagGroups = []flags.FlagGroup{
 		Flags: []cli.Flag{
 			utils.SnapshotFlag,
 			utils.BloomFilterSizeFlag,
+			utils.IgnoreLegacyReceiptsFlag,
 			cli.HelpFlag,
 		},
 	},

cmd/utils/flags.go

@@ -575,6 +575,10 @@ var (
 		Name:  "nocompaction",
 		Usage: "Disables db compaction after import",
 	}
+	IgnoreLegacyReceiptsFlag = cli.BoolFlag{
+		Name:  "ignore-legacy-receipts",
+		Usage: "Geth will start up even if there are legacy receipts in freezer",
+	}
 	// RPC settings
 	IPCDisabledFlag = cli.BoolFlag{
 		Name:  "ipcdisable",