Dynamically adding a device to a non-global zone
How can you add a new device to a non-global zone without having
to reboot the zone ? Obviously using zonecfg and then rebooting the
zone works but often rebooting the zone would be very user unfriendly.
In particular we occasionally need to add a new disk mirror in the global
zone and then let the non-global zone have access to it.
[365 byte] By [
livercoma] at [2007-11-26 19:58:16]

# 1
So each zone has a /dev tree that's private in <zoneroot>/dev which gets lofs mounted to /dev in the zone. You can mknod a new device in here and it appears instantly in the zone. Use the same major and minor numbers that device has in the global zone. If it's a disk device, make sure to major both the block and character device.
Of course, you want to edit the zone config to make it permanent (though I suspect it may actually be permanent if you mknod the device...)