> Mirrors are made with vdevs (LUs or disks), not
> pools.  However, the
> vdev attached to a mirror must be the same size (or
> nearly so) as the
> original. If the original vdevs are 4TB, then a
> migration to a pool made
> with 1TB vdevs cannot be done by replacing vdevs
> (mirror method).
>  -- richard

Both luns that we are sharing out with comstar are vdevs. It sounds like we can 
create the new temporary pool, create a couple new luns the same size as the 
old ones and then create mirrors between the two. Wait until it is synced and 
break the mirror. This is what we were thinking we could do, just wanted to 
make sure.
-- 
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