extern int open_container(int fd);
extern int is_container_member(struct mdstat_ent *ent, char *devname);
extern int is_subarray_active(char *subarray, char *devname);
+int is_container_active(char *devname);
extern int open_subarray(char *dev, struct supertype *st, int quiet);
extern struct superswitch *version_to_superswitch(char *vers);