using lightchaindata db dir

cmd/geth/chaincmd.go

@@ -128,7 +128,7 @@ func removeDB(ctx *cli.Context) error {
 		fmt.Println("Removing chaindata...")
 		start := time.Now()
 
-		os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), "chaindata"))
+		os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), utils.ChainDbName(ctx)))
 
 		fmt.Printf("Removed in %v\n", time.Since(start))
 	} else {
@@ -153,7 +153,7 @@ func upgradeDB(ctx *cli.Context) error {
 		utils.Fatalf("Unable to export chain for reimport %s", err)
 	}
 	chainDb.Close()
-	os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), "chaindata"))
+	os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), utils.ChainDbName(ctx)))
 
 	// Import the chain file.
 	chain, chainDb = utils.MakeChain(ctx)

cmd/geth/main.go

@@ -291,7 +291,7 @@ func initGenesis(ctx *cli.Context) error {
 		utils.Fatalf("must supply path to genesis JSON file")
 	}
 
-	chainDb, err := ethdb.NewLDBDatabase(filepath.Join(utils.MustMakeDataDir(ctx), "chaindata"), 0, 0)
+	chainDb, err := ethdb.NewLDBDatabase(filepath.Join(utils.MustMakeDataDir(ctx), utils.ChainDbName(ctx)), 0, 0)
 	if err != nil {
 		utils.Fatalf("could not open database: %v", err)
 	}

cmd/utils/flags.go

@@ -866,15 +866,24 @@ func MustMakeChainConfigFromDb(ctx *cli.Context, db ethdb.Database) *core.ChainC
 	return &core.ChainConfig{HomesteadBlock: homesteadBlockNo}
 }
 
+func ChainDbName(ctx *cli.Context) string {
+	if ctx.GlobalBool(LightModeFlag.Name) {
+		return "lightchaindata"
+	} else {
+		return "chaindata"
+	}
+}
+
 // MakeChainDatabase open an LevelDB using the flags passed to the client and will hard crash if it fails.
 func MakeChainDatabase(ctx *cli.Context) ethdb.Database {
 	var (
 		datadir = MustMakeDataDir(ctx)
 		cache   = ctx.GlobalInt(CacheFlag.Name)
 		handles = MakeDatabaseHandles()
+		name    = ChainDbName(ctx)
 	)
 
-	chainDb, err := ethdb.NewLDBDatabase(filepath.Join(datadir, "chaindata"), cache, handles)
+	chainDb, err := ethdb.NewLDBDatabase(filepath.Join(datadir, name), cache, handles)
 	if err != nil {
 		Fatalf("Could not open database: %v", err)
 	}

eth/backend.go

@@ -157,7 +157,7 @@ func (s *FullNodeService) AddLesServer(ls LesServer) {
 // New creates a new FullNodeService object (including the
 // initialisation of the common Ethereum object)
 func New(ctx *node.ServiceContext, config *Config) (*FullNodeService, error) {
-	chainDb, dappDb, err := CreateDBs(ctx, config)
+	chainDb, dappDb, err := CreateDBs(ctx, config, "chaindata")
 	if err != nil {
 		return nil, err
 	}
@@ -257,9 +257,9 @@ func New(ctx *node.ServiceContext, config *Config) (*FullNodeService, error) {
 }
 
 // CreateDBs creates the chain and dapp databases for an Ethereum service
-func CreateDBs(ctx *node.ServiceContext, config *Config) (chainDb, dappDb ethdb.Database, err error) {
+func CreateDBs(ctx *node.ServiceContext, config *Config, name string) (chainDb, dappDb ethdb.Database, err error) {
 	// Open the chain database and perform any upgrades needed
-	chainDb, err = ctx.OpenDatabase("chaindata", config.DatabaseCache, config.DatabaseHandles)
+	chainDb, err = ctx.OpenDatabase(name, config.DatabaseCache, config.DatabaseHandles)
 	if err != nil {
 		return nil, nil, err
 	}

ethdb/database.go

@@ -41,6 +41,7 @@ var OpenFileLimit = 64
 var cacheRatio = map[string]float64{
 	"dapp":           0.0,
 	"chaindata":      1.0,
+	"lightchaindata": 1.0,
 }
 
 // handleRatio specifies how the total alloted file descriptors is distributed
@@ -48,6 +49,7 @@ var cacheRatio = map[string]float64{
 var handleRatio = map[string]float64{
 	"dapp":           0.0,
 	"chaindata":      1.0,
+	"lightchaindata": 1.0,
 }
 
 type LDBDatabase struct {

les/backend.go

@@ -72,7 +72,7 @@ type LightNodeService struct {
 }
 
 func New(ctx *node.ServiceContext, config *eth.Config) (*LightNodeService, error) {
-	chainDb, dappDb, err := eth.CreateDBs(ctx, config)
+	chainDb, dappDb, err := eth.CreateDBs(ctx, config, "lightchaindata")
 	if err != nil {
 		return nil, err
 	}