filer: leveldb, rocksdb auto create store directory

fix https://github.com/chrislusf/seaweedfs/issues/1901

weed/filer/leveldb/leveldb_store.go

@@ -8,6 +8,7 @@ import (
 	leveldb_errors "github.com/syndtr/goleveldb/leveldb/errors"
 	"github.com/syndtr/goleveldb/leveldb/opt"
 	leveldb_util "github.com/syndtr/goleveldb/leveldb/util"
+	"os"
 
 	"github.com/chrislusf/seaweedfs/weed/filer"
 	"github.com/chrislusf/seaweedfs/weed/glog"
@@ -38,6 +39,7 @@ func (store *LevelDBStore) Initialize(configuration weed_util.Configuration, pre
 
 func (store *LevelDBStore) initialize(dir string) (err error) {
 	glog.Infof("filer store dir: %s", dir)
+	os.MkdirAll(dir, 0755)
 	if err := weed_util.TestFolderWritable(dir); err != nil {
 		return fmt.Errorf("Check Level Folder %s Writable: %s", dir, err)
 	}

weed/filer/leveldb2/leveldb2_store.go

@@ -38,6 +38,7 @@ func (store *LevelDB2Store) Initialize(configuration weed_util.Configuration, pr
 
 func (store *LevelDB2Store) initialize(dir string, dbCount int) (err error) {
 	glog.Infof("filer store leveldb2 dir: %s", dir)
+	os.MkdirAll(dir, 0755)
 	if err := weed_util.TestFolderWritable(dir); err != nil {
 		return fmt.Errorf("Check Level Folder %s Writable: %s", dir, err)
 	}

weed/filer/leveldb3/leveldb3_store.go

@@ -45,6 +45,7 @@ func (store *LevelDB3Store) Initialize(configuration weed_util.Configuration, pr
 
 func (store *LevelDB3Store) initialize(dir string) (err error) {
 	glog.Infof("filer store leveldb3 dir: %s", dir)
+	os.MkdirAll(dir, 0755)
 	if err := weed_util.TestFolderWritable(dir); err != nil {
 		return fmt.Errorf("Check Level Folder %s Writable: %s", dir, err)
 	}

weed/filer/rocksdb/rocksdb_store.go

@@ -8,6 +8,7 @@ import (
 	"crypto/md5"
 	"fmt"
 	"io"
+	"os"
 
 	"github.com/tecbot/gorocksdb"
 
@@ -56,6 +57,7 @@ func (store *RocksDBStore) Initialize(configuration weed_util.Configuration, pre
 
 func (store *RocksDBStore) initialize(dir string) (err error) {
 	glog.Infof("filer store rocksdb dir: %s", dir)
+	os.MkdirAll(dir, 0755)
 	if err := weed_util.TestFolderWritable(dir); err != nil {
 		return fmt.Errorf("Check Level Folder %s Writable: %s", dir, err)
 	}