int (*open_new)(struct supertype *c, struct active_array *a, int inst);
void (*mark_clean)(struct active_array *a, unsigned long long sync_pos);
void (*mark_dirty)(struct active_array *a);
+ void (*mark_sync)(struct active_array *a, unsigned long long resync);
void (*set_disk)(struct active_array *a, int n);
void (*sync_metadata)(struct active_array *a);