dm_state_change
dm_state_change(diskp, HPS_REPAIRED);
dm_state_change(diskp, HPS_FAULTED);
dm_state_change(diskp, HPS_FAULTED);
dm_state_change(diskp, disk_sysev_to_state(diskp, dupev));
extern void dm_state_change(diskmon_t *diskp, hotplug_state_t newstate);