protection from starting e2 git branch on e3 db (#10150)

cmd/utils/flags.go

@@ -661,10 +661,6 @@ var (
 		Usage: "Metrics HTTP server listening port",
 		Value: metrics.DefaultConfig.Port,
 	}
-	HistoryV3Flag = cli.BoolFlag{
-		Name:  "experimental.history.v3",
-		Usage: "(Also known as Erigon3) Not recommended yet: Can't change this flag after node creation. New DB and Snapshots format of history allows: parallel blocks execution, get state as of given transaction without executing whole block.",
-	}
 
 	CliqueSnapshotCheckpointIntervalFlag = cli.UintFlag{
 		Name:  "clique.checkpoint",
@@ -1804,7 +1800,6 @@ func SetEthConfig(ctx *cli.Context, nodeConfig *nodecfg.Config, cfg *ethconfig.C
 	setCaplin(ctx, cfg)
 
 	cfg.Ethstats = ctx.String(EthStatsURLFlag.Name)
-	cfg.HistoryV3 = ctx.Bool(HistoryV3Flag.Name)
 
 	if ctx.IsSet(RPCGlobalGasCapFlag.Name) {
 		cfg.RPCGasCap = ctx.Uint64(RPCGlobalGasCapFlag.Name)

eth/backend.go

@@ -263,6 +263,9 @@ func New(ctx context.Context, stack *node.Node, config *ethconfig.Config, logger
 		return nil, err
 	}
 
+	if config.HistoryV3 {
+		return nil, errors.New("seems you using erigon2 git branch on erigon3 DB")
+	}
 	ctx, ctxCancel := context.WithCancel(context.Background())
 
 	// kv_remote architecture does blocks on stream.Send - means current architecture require unlimited amount of txs to provide good throughput

turbo/cli/default_flags.go

@@ -128,7 +128,6 @@ var DefaultFlags = []cli.Flag{
 	&utils.GpoBlocksFlag,
 	&utils.GpoPercentileFlag,
 	&utils.InsecureUnlockAllowedFlag,
-	&utils.HistoryV3Flag,
 	&utils.IdentityFlag,
 	&utils.CliqueSnapshotCheckpointIntervalFlag,
 	&utils.CliqueSnapshotInmemorySnapshotsFlag,