Pass Number

The pass number, a number in the range 0-9, determines the order in which a particular mirror is resynced during a system reboot. The default pass number is one (1). Smaller pass numbers are resynced first. If 0 is used, the mirror resync is skipped. A 0 should be used only for mirrors mounted as read-only. Mirrors with the same pass number are resynced at the same time.