extern int zvol_get_stats(objset_t *os, nvlist_t *nv);
extern boolean_t zvol_is_zvol(const char *);
extern void zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
-extern int zvol_create_minor(const char *);
-extern int zvol_create_minors(const char *);
-extern int zvol_remove_minor(const char *);
-extern void zvol_remove_minors(const char *);
+extern int zvol_create_minor(const char *name);
+extern int zvol_create_minors(const char *name);
+extern int zvol_remove_minor(const char *name);
+extern void zvol_remove_minors(const char *name);
+extern void zvol_rename_minors(const char *oldname, const char *newname);
extern int zvol_set_volsize(const char *, uint64_t);
extern int zvol_set_volblocksize(const char *, uint64_t);
extern int zvol_set_snapdev(const char *, uint64_t);