[OpenIndiana-discuss] When adding a mirror disk to rpool

[Harry Putnam]

I'm about to create a mirror to rpool that currently is a single
disk.  I remember it being somewhat more involved than any other pool
for adding a mirror.

Involving the boot bits and running grub... maybe other stuff as well.

I wondered if anyone has a URL where I might read about the procedure,
or failing that can anyone provide a general outline of steps that
need to be taken.