+ int write_meta(const std::string& key, const std::string& value) override;
+ int read_meta(const std::string& key, std::string *value) override;
+
+
+ int fsck(bool deep) override {
+ return _fsck(deep, false);
+ }
+ int repair(bool deep) override {
+ return _fsck(deep, true);
+ }
+ int _fsck(bool deep, bool repair);