-#define ZVOL_DIR "/dev/zvol"
-/* expansion */
-#define ZVOL_PSEUDO_DEV "/devices/pseudo/zfs@0:"
-/* for dump and swap */
-#define ZVOL_FULL_DEV_DIR ZVOL_DIR "/dsk/"
-#define ZVOL_FULL_RDEV_DIR ZVOL_DIR "/rdsk/"
+#define ZVOL_DIR "/dev"
+
+#define ZVOL_MAJOR 230
+#define ZVOL_MINOR_BITS 4
+#define ZVOL_MINOR_MASK ((1U << ZVOL_MINOR_BITS) - 1)
+#define ZVOL_MINORS (1 << 4)